SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                    FORM 10-K
              ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE
                         SECURITIES EXCHANGE ACT OF 1934

                   For the fiscal year ended December 31, 2000
                         Commission file number 0-23044

                               MOTIENT CORPORATION
             (Exact name of registrant as specified in its charter)

             DELAWARE              93-0976127          (State   or   other
         jurisdiction of       (I.R.S.  Employer        incorporation  or
          organization)       Identification No.)

                  10802 Parkridge Boulevard
                           Reston, VA                   20191-5416
           (Address of principal executive offices)     (Zip Code)

       Registrant's telephone number, including area code: (703) 758-6000

             Securities registered pursuant to Section 12(b) of the
               Act: None Securities registered pursuant to Section
                                12(g) of the Act:
                     Common Stock, $0.01 per value per share
                                (Title of class)

Indicate by check mark whether the registrant (1) has filed all reports required
to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during
the  preceding 12 months (or for such  shorter  period that the  registrant  was
required  to file  such  report(s),  and (2) has  been  subject  to such  filing
requirements for the past 90 days. Yes X No

The aggregate market value of shares of Common Stock held by  non-affiliates  at
March 26, 2001 was approximately $85,766,610.

Number of shares of Common Stock outstanding at March 26, 2001: 49,575,413

                       DOCUMENTS INCORPORATED BY REFERENCE

Indicate by check mark if disclosure of delinquent  filers  pursuant to Item 405
of Regulation  S-K is not contained  herein,  and will not be contained,  to the
best of registrant's  knowledge,  in definitive proxy or information  statements
incorporated  by  reference in Part III of this Form 10-K or any  amendments  to
this Form 10-K. __









                               MOTIENT CORPORATION


                         2000 Annual Report on Form 10-K


                                     PART I


This  Annual  Report  on Form 10-K  contains  and  incorporates  forward-looking
statements  within the meaning of Section 27A of the  Securities Act of 1933, as
amended, and Section 21E of the Securities Exchange Act of 1934, as amended. All
statements  regarding our expected financial position and operating results, our
business strategy and our financing plans are forward-looking statements.  These
statements can sometimes be identified by our use of forward-looking  words such
as "may," "will,"  "anticipate,"  "estimate,"  "expect," "project," or "intend."
These  forward-looking  statements  reflect our plans,  expectations and beliefs
and,  accordingly,  are subject to certain  risks and  uncertainties.  We cannot
guarantee that any of such forward-looking statements will be realized.

Factors  that  may  cause  actual  results  to  differ   materially  from  those
contemplated  by  such  forward-looking   statements  ("Cautionary  Statements")
include,   among  others,  those  described  under  the  caption   "Management's
Discussion  and  Analysis of  Financial  Condition  and Results of  Operations -
Overview,"  and elsewhere in this annual report,  including in conjunction  with
the  forward-looking  statements  included  in this  annual  report.  All of our
subsequent written and oral  forward-looking  statements (or statements that may
be attributed to us) are expressly qualified by the Cautionary  Statements.  You
should carefully review the risk factors described in our other filings with the
Securities and Exchange Commission (the "SEC") from time to time,  including our
registration  statement  on Form S-3 (File  No.  333-42104),  and our  quarterly
reports on Form 10-Q to be filed after this annual report,  as well as our other
reports and filings with the SEC. In addition, you are urged to review carefully
the  prospectus   (including   supplements)  included  within  the  registration
statement (File No. 333-47570) of XM Satellite Radio Holdings Inc. ("XM Radio"),
and XM Radio's  current  report on Form 8-K dated  February  21,  2001 (File No.
0-27441),  each filed with the SEC, which describe certain risk factors relating
to XM Radio's  business,  as well as XM Radio's other reports filed from time to
time with the SEC.

Our forward-looking  statements are based on information  available to us today,
and we  will  not  update  these  statements.  Our  actual  results  may  differ
significantly from the results discussed.



Item 1.           Business.



                                    Overview



We are a  nationwide  provider of two-way,  wireless  mobile data  services  and
mobile Internet  services.  Our customers use our network and  applications  for
email  messaging  and  dispatch  and  voice  communications  services,  enabling
businesses,  mobile workers and consumers to transfer electronic information and
messages  and  access  corporate  databases  and the  Internet.  Our  network is
designed to offer a broad array of wireless data services such as:

o    two-way mobile Internet  services,  including our eLink(sm)  wireless email
     service and  BlackBerry(TM)  by Motient wireless email,  that provide users
     integrated wireless access to a broad range of corporate and Internet email
     and Net-based information;

o    telemetry  systems  that  connect  remote   equipment,   such  as  wireless
     point-of-sale terminals, with a central monitoring facility;

o    mobile data and call dispatch fleet management  systems used by large field
     service organizations; and

o    point-to-multi-point  voice communications systems used by natural resource
     companies,  utilities,  government  agencies and other entities with mobile
     fleets and field workers.

We have been providing  terrestrial  wireless  services to customers for several
years, using a network which possesses four key design  attributes:  (1) two-way
communication,  (2) deep  in-building  penetration,  (3) user mobility,  and (4)
broad nationwide  coverage.  We offer our customers the nation's  largest,  most
fully-deployed terrestrial wireless two-way data network,  comprising over 2,000
base stations  that provide  service to 430 of the nation's  largest  cities and
towns,  including  virtually all  metropolitan  areas. In 2000, we significantly
improved terrestrial network performance and coverage,  adding approximately 200
new  base  stations.   Our  satellite  in  geosynchronous   orbit  overlays  our
terrestrial network,  thereby extending the service area coverage of our network
for certain of our transportation service offerings throughout all 50 states and
the  Caribbean.  The  satellite  also  provides  nationwide  voice and  dispatch
services. As of December 31, 2000, there were approximately 206,000 end users on
our  networks,  of which  188,000 were using data services and 18,000 were using
voice services.

We believe that our network's rapid message response time,  extensive nationwide
coverage and deep in-building  penetration are key competitive  advantages.  Our
business-to-business  customers  enjoy the  advantages  of  wireless  integrated
network   applications  and  mobile  Internet   services  for  mission  critical
applications,  built on a fully redundant network architecture.  We are the only
mobile data network to offer guaranteed message delivery to our customers.


Our Investment in XM Radio

In addition to our core wireless business,  we have a significant  investment in
XM Satellite Radio Holdings Inc. ("XM Radio"),  a development stage company.  XM
Radio is seeking  to become a  nationwide  provider  of  digital  quality  audio
entertainment and information  programming transmitted directly by satellites to
vehicle,  home and  portable  radios.  XM Radio owns one of two FCC  licenses to
provide a satellite  digital audio radio service for the United States. XM Radio
is  developing  its  service,  which it will call "XM  Radio," to provide a wide
variety of music,  news, talk, sports and other  programming  offering up to 100
distinctive  channels. XM Radio completed its initial public offering in October
1999.


                               Recent Developments

Sale of Transportation Business to Aether Systems, Inc.

On  November  29,  2000,  we sold our retail  transportation  business to Aether
Systems, Inc. Aether purchased the assets comprising our wireless communications
business  for  the  transportation  market,  including  our  satellite-only  and
MobileMAX2(TM)  multi-mode  mobile  messaging  business.  Aether  purchased  our
existing  inventory in the business,  and was granted a perpetual license to use
and modify any  intellectual  property  owned by or licensed to us in connection
with the  business.  The  purchase  price for these  assets and  license was $45
million,  plus the book value of the inventory.  Of the $45 million, $10 million
was  deposited  in an escrow  account  and is not  payable to us unless  certain
criteria  with respect to MobileMAX2  are  satisfied.  In addition,  we have the
opportunity  to  receive up to an  additional  $22.5  million  as an  "earn-out"
payment,  subject to the  satisfaction  of  certain  operating  results  for the
acquired business during 2001.

To enable Aether to continue to operate the retail  transportation  business, we
and Aether signed two long-term network airtime  agreements,  under which Aether
will  purchase  airtime  on  our  satellite  and  terrestrial  networks.   These
agreements  have a total  value of $20  million.  As part of  these  agreements,
Aether also became an authorized reseller of Motient's eLink (sm) wireless email
service, as well as BlackBerry(TM) by Motient.


Mobile Satellite Ventures LLC

On January 12, 2001, we entered into a definitive agreement,  subject to certain
conditions,  to amend in several respects the terms of our June 2000 transaction
involving  Mobile  Satellite  Ventures LLC ("Satellite  Ventures").  First,  the
investors  who  currently  own  20% of  Satellite  Ventures,  Columbia  Capital,
Spectrum Equity Investors LP, and Telcom  Ventures,  L.L.C.  (the  "Investors"),
agreed,  subject to certain conditions,  to invest additional money in Satellite
Ventures and increase  their stake in Satellite  Ventures,  as well as having an
option to invest  additional  money to increase  their stake in the future.  The
agreement  calls for the  Investors  to pay $50 million (in  addition to the $50
million paid by the Investors in June),  to become (in the aggregate) the owners
of 40% of the outstanding  interests of Satellite  Ventures.  The Investors will
also have an option (the "Second Option"), exercisable through June 29, 2002 for
an additional $40 million,  to increase their ownership in Satellite Ventures to
50.66% (with each individual Investor's stake being less than 20%).

Second,  upon closing of the transaction,  TMI  Communications & Company Limited
Partnership ("TMI"),  the Canadian satellite services provider,  will contribute
its satellite  communications business assets to Satellite Ventures,  along with
our satellite business assets as described below. To satisfy Canadian regulatory
requirements,  certain of the  Canadian  assets will be held  through a Canadian
license  company.  In connection  with its  contribution  of assets to Satellite
Ventures,  TMI will  become the owner of  approximately  27% of the  outstanding
equity of Satellite Ventures.

Upon closing of these transactions,  we will sell our remaining satellite assets
to  Satellite  Ventures,  and  will  own  approximately  33% of the  outstanding
interests and be the largest single shareholder of Satellite Ventures.

The  consummation  of the  transactions  is subject to receipt of all  necessary
regulatory  governmental  approvals  and  consents,   including,   for  example,
approvals  under  the  Hart-Scott-Rodino  Antitrust  Improvements  Act,  and FCC
approvals  with respect to both the  transfer of our FCC licenses and  Satellite
Ventures' plans for a new generation  integrated  satellite-terrestrial  system,
approvals  by Canadian  regulatory  authorities  with respect to the transfer of
TMI's communications licenses to the new venture, and other customary conditions
relating to due diligence review, third party consents,  and similar matters. In
certain circumstances,  beginning in January 2002, if certain closing conditions
have not been obtained, we and TMI have certain rights to require the closing to
proceed at such  time,  and if less than all of the  Investors  wish to close at
such time, we and TMI may, under certain  circumstances,  purchase the interests
in  Satellite  Ventures  that would have  otherwise  been  acquired  by any such
non-participating Investors.

For further details regarding the Satellite Ventures  transaction,  please refer
to our Current Report on Form 8-K filed with the SEC on January 16, 2001.


                                  Our Strategy

Our  objective is to penetrate  aggressively  the large and growing  markets for
mobile   Internet  data   communications   services,   and  wireless   telemetry
applications. To meet this objective we intend to:

Leverage  Distribution  Resources of Strategic Partners. To penetrate our target
markets,  we have signed a number of strategic  alliances with industry leaders.
We intend  to  leverage  the  marketing  and  distribution  resources  and large
existing  customer  bases  of  these  partners  to  address  significantly  more
potential  customers  than we would  be able to  address  on our own.  We have a
roster of  industry-leading  resellers  for our eLink  wireless  email  service,
including  SkyTel,  Metrocall,  Aether Systems,  and GoAmerica,  and we recently
expanded our existing  relationship  with Research in Motion Limited  ("RIM") to
permit RIM to resell its  BlackBerry(TM)  brand email service on our terrestrial
wireless  network.  In the telemetry  market, we have partnered with a number of
device  manufacturers,  resellers,  and software vendors to develop a variety of
customer-driven telemetry applications, including HVAC system monitoring, energy
monitoring,  office and vending machine automation,  and wireless  point-of-sale
applications. We will continue to seek strategic distribution channels that will
enable us to more fully penetrate our existing  markets and access potential new
markets on an incremental  basis. In addition,  in vertical markets we intend to
exploit  cross-selling  opportunities using some of our existing large corporate
customers.

Develop New Wireless Applications.  We intend to exploit the market potential of
our wireless network by working with  value-added  partners and major e-business
solutions providers to develop additional  innovative wireless  applications and
content-based  services,  including  future  enhancements  to our eLink wireless
email service.  As market  acceptance  and demand for wireless  email grows,  we
believe users will demand a wide variety of content-based  services and features
currently accessible on the Internet. We currently offer content-based  services
for use with our eLink service provided by GoAmerica, OracleMobile, Novarra, and
Neomar.  We are  continuing  to broaden and expand  those  services,  as well as
pursuing  other  similar  agreements.  In addition,  we have formed an important
strategic  alliance  with IBM,  under which we will  jointly  develop and market
wireless  enterprise-wide  email and other  e-business  solutions  to  corporate
customers,  as well as large email  hosting  Internet  Service  Providers,  Mail
Service Providers, and Applications Service Providers.

Work With Vendors to Develop Less Expensive and More Functional User Devices. We
will  continue to work with vendors to develop new  generations  of user devices
and applications that combine improved  functionality and convenience at a lower
price.  We  recently  announced  the  introduction  of the new RIM 857  wireless
handheld device for use on our network.  We also recently announced an agreement
with Wavenet  International Ltd. to develop a wireless accessory that will bring
our  network  services to other  existing  popular  PDA  platforms,  such as the
popular palm-held devices. In conjunction with this effort, we will make certain
changes  to our  switching  infrastructure  which  may allow us to offer a wider
variety of handheld  devices and  additional  applications.  We will continue to
incorporate  inexpensive,  off  the  shelf  software  or  free  software  in our
services.  We believe that lower price points will accelerate the acceptance and
adoption of our services in our traditional  markets, and will also enable us to
better  penetrate our targeted new wireless  markets.  By working with suppliers
and other  business  partners  and by making  strategic  software  and  hardware
investments,  we have  significantly  lowered the total cost of ownership of our
products.  At the same time, we have improved the  functionality  of our devices
and made them smaller and more convenient.


Capitalize on, and Enhance,  Our Network's  Technical  Advantages.  We have been
providing  terrestrial  wireless services to customers for several years,  using
the nation's  largest,  most fully deployed  terrestrial  wireless  two-way data
network.  Unlike many  competitors  who are in the  process of building  limited
city-wide or regional terrestrial networks, or planning to launch satellites, we
have  deployed a national  network  that is well  tested and  reliable,  and our
future  network  expansion  requirements  are expected to arise  primarily  from
increased customer demand. We believe that our terrestrial  network provides key
competitive  advantages currently unmatched by any competitor:  broad nationwide
geographic   coverage,    guaranteed   two-way   message   delivery,    superior
responsiveness,  and deep  in-building  penetration  with  superior  performance
characteristics    when   compared   with   cellular-based    architectures   or
satellite-only  alternatives.  We also  believe that our two-way  messaging  and
wireless email  products are superior to currently  available  "two-way  paging"
services,  due to the full,  two-way  messaging  capabilities  that our  network
enables.  We will  continue to enhance our  terrestrial  network's  capacity and
coverage by acquiring additional frequency, building more base stations, both in
existing and new geographic markets, and selectively upgrading the technological
capabilities of existing base stations.


                         Our Wireless Service Offerings

We offer wireless services in two broad  categories:  terrestrial data services,
including eLink wireless email,  and satellite voice and dispatch  services.  In
addition,  through Aether Systems, we also serve the transportation  market with
multi-mode and satellite-only  wireless data services. We describe each of these
categories below.

Terrestrial Data Services

General.  Terrestrial data services are the core of our wireless business. These
services include our eLink wireless email service and  BlackBerry(TM) by Motient
email. We target our data applications to both vertical and horizontal  markets.
Applications include wireless email,  Internet and Intranet access, fax, paging,
peer-to-peer communications,  asset tracking, dispatch, point-of-sale, and other
telemetry applications.  There are over 30 types of subscriber devices available
from  more  than 15  manufacturers  for use on our  terrestrial  network.  These
devices  include RIM handheld  devices,  ruggedized  laptops,  handheld  digital
assistants,  and  wireless  modems  for  PC's.  We  have  developed  proprietary
software, and we have engaged a variety of other software firms to develop other
"middleware," to minimize our customers' development efforts in connecting their
applications to our network.  Also, a number of off-the-shelf  software packages
enable popular email software applications on our network.

In the field service market,  long-standing customers such as IBM, Sears, Pitney
Bowes, and NCR use our customized  terrestrial data applications to enable their
mobile field service  technicians to stay  connected.  These customers value the
broad,  nationwide coverage and deep in-building  penetration of our terrestrial
data network.

Our largest  single  terrestrial  data  application  is in the package  delivery
market,  where UPS has registered for service  approximately 43,000 of its third
generation package tracking devices on our network, under a multi-year agreement
with us that calls for UPS to deploy approximately 50,000 devices on our network
by the end of 2001.  UPS has recently  informed us that it expects to expand the
use of this  application  on our network  over the next several  years,  and UPS
anticipates that it may eventually deploy up to 70,000 units (in total).

eLink Wireless  Email.  Our eLink wireless email service  provides  mobile users
with integrated wireless access to a broad range of corporate and Internet email
and personal information  management (PIM) applications.  The eLink service uses
wireless handheld devices manufactured by RIM, including the RIM 850 and RIM 857
wireless  handhelds.  These  devices  feature  a  full  QWERTY  keyboard  and  a
thumbwheel which functions as a mouse.

We currently  offer two  versions of eLink,  "Agent(sm),"  and  "Messenger(sm)."
Agent and Messenger may also be combined,  offering users the  functionality  of
both applications on a single handheld device.

Users of our eLink  Agent  service can send and receive  email  messages,  using
their  existing  corporate  or  Internet  email  address,  over our  terrestrial
network,  as long as the user's  email  system is  compliant  with the  industry
protocol  known as Post  Office  Protocol  3, or POP 3. We also  added an IMAP 4
solution for eLink in 2000, providing greater flexibility to customers by adding
a more robust Internet email application  protocol.  Outgoing mail sent from the
device appears to have come from the user's desktop PC. eLink  synchronizes with
a user's  desktop PC so that full calendar,  task list, and contact  information
can be instantly  swapped to and from the device.  To address the security needs
of corporate customers,  eLink Agent is also offered in a self-contained  format
so that the corporate  customer can install the network gateway  software behind
its firewall on servers located on the customer's site.

Our eLink Messenger  service  assigns a unique email address  (separate from the
user's corporate or Internet email address),  allowing users to send and receive
wireless email messages  independent  of other email systems.  In addition,  the
Messenger  service allows users to send faxes from their device,  and the device
also functions as a pager.  Messenger also enables the user to synchronize their
device with calendar, task list, and contact information from the user's desktop
PC.

We are  actively  working on a number of  innovative  enhancements  to our eLink
service that will enhance both  security  and  functionality.  Also,  in 2000 we
expanded our network's  coverage for eLink users by offering roaming services in
Canada through an agreement with the Canadian network operator Bell Mobility.

BlackBerry(TM)  by  Motient.  BlackBerry(TM)  by Motient is a wireless  solution
specifically  designed for corporate  environments  using Microsoft(r) Exchange.
BlackBerry  has  substantially  the same  functionality  as our  eLink  service,
including  wireless  email,  as well as a variety of similar PIM  functions  and
applications.  BlackBerry  tightly  integrates  with  Microsoft  Exchange  email
accounts.  During 2001, in concert with our partner Research in Motion,  we also
expect to offer a version of  BlackBerry  that  integrates  with the Lotus Notes
email platform.  The  availability of an integrated  Lotus Notes email extension
significantly expands the available market for this offering.

The BlackBerry  desktop software  installs and runs on the user's desktop PC. It
is an integrated suite of applications that provides organizer  synchronization,
folder  management  tools,  email  filtering  capabilities,  information  backup
utilities, and an application loader.

BlackBerry  is designed to provide a high level of security.  Encryption  occurs
between the handheld and  corporate  email system to ensure  message  integrity.
BlackBerry  incorporates  Triple DES  encryption  technology  to meet  stringent
corporate security guidelines for remote email access.

We are authorized to resell  BlackBerry(TM)  by Motient pursuant to an agreement
with RIM. RIM also resells  BlackBerry(TM)  by Motient on our network  through a
variety of VARs and resellers,  and RIM has committed to place 50,000 BlackBerry
units on our network over the next 12 months.  We also offer roaming services in
Canada to our  BlackBerry(TM) by Motient customers through an agreement with the
Canadian network operator Bell Mobility.

eLink  Fortified with Yahoo!  eLink  Fortified with Yahoo! is a new service that
combines our eLink  wireless  email  service with Yahoo!  content and  services.
Using the RIM 850 wireless  handheld  device,  this service  provides users with
mobile,  wireless  access  to a variety  of Yahoo!  services.  This  service  is
currently  available to the consumer market through a number of retail channels,
including several online channels,  and we are working with Yahoo! to expand our
distribution channels for this service.

Telemetry. We have partnered with a variety of resellers,  device manufacturers,
and  software  vendors  in  the  telemetry  market.   These  partners  integrate
customer-specific  devices  and  systems  with our network to provide a wireless
means of transmitting  data from a fixed or mobile site to a central  monitoring
facility.  Applications include HVAC system monitoring,  wireless  point-of-sale
systems,  energy  monitoring,   vending  and  office  machine  automation,   and
security/alarm monitoring.

Pricing of Terrestrial  Data Services.  Terrestrial  data service  customers are
charged a monthly  access fee.  In  addition  to this access fee,  users pay for
usage  depending  on the number of kilobytes  of data  transmitted.  Our pricing
plans offer a wide variety of volume  packaging and discounts,  consistent  with
customer  demand and market  conditions.  The average  monthly bill for our data
customers  (other than eLink) range from below $10 for high unit  quantity,  low
traffic volume,  off-peak  telemetry  users, to over $50 for  high-volume,  peak
users in the field service  market.  Our average  monthly  revenue per data user
(other than eLink) in the fourth quarter of 2000 was approximately $30.00.


Satellite Voice and Dispatch Services

Our  satellite  telephone  service  supports  two-way   circuit-switched  voice,
facsimile  and  data  service.   We  offer  a  wide  range  of  satellite  phone
configurations  developed to address the particular  communications needs of our
customers.  We market  telephone  service  to  businesses  that have  nationwide
coverage  requirements,  including those operating in geographic areas that lack
significant terrestrial coverage, such as natural resource companies,  utilities
and  telecommunications  companies  that require  backup and  restoral  support,
public safety organizations,  and maritime users seeking expanded or less costly
coverage for both commercial and recreational vessels. Our significant satellite
telephone  customers include the Red Cross, FEMA, Stratos Global,  Western Atlas
Logging, and Haliburton.

Our   satellite   dispatch   service   provides    point-to-multi-point    voice
communications  among users in a  customer-defined  group  using a  push-to-talk
device. This service  facilitates  team-based  contingency-driven  operations of
groups  operating over wide and/or remote areas.  Our targeted  customer  groups
include  oil  and  gas  pipeline  companies,  utilities  and  telecommunications
companies  with  outside  maintenance  fleets,  state  and local  public  safety
organizations,  and public  service  organizations  who need to seamlessly  link
resources on a nationwide basis. Our significant  satellite  dispatch  customers
include AT&T and MCI WorldCom.

Satellite telephone users are charged both fixed access and variable usage fees.
Our  satellite  dispatch  customers are charged a fixed access fee for virtually
unlimited  usage.  Monthly bills for satellite  voice  customers range from over
$100 for  high  volume  users  to a low of $35 for  certain  public  safety  and
emergency restoral  applications.  Our average monthly revenue per voice user in
the fourth quarter of 2000 was approximately $46.00.

Multi-Mode  and  Satellite-Only  Wireless Data  Services for the  Transportation
Market

As discussed above in "Recent Developments," in November 2000 we sold our retail
transportation  business to Aether  Systems,  Inc.  Through Aether  Systems,  we
continue to serve the  transportation  market with multi-mode and satellite-only
wireless  data  services.  Our  multi-mode  service  uses  our  terrestrial  and
satellite network to provide  "least-cost-routing"  for customers'  two-way data
communications. The multi-mode service does this by actively seeking connections
to the lower cost  terrestrial  network  before  automatically  switching to our
satellite  network.  By using  both  networks,  the  multi-mode  service  offers
complete  nationwide  coverage.  Our  satellite-only  messaging  service  is  an
alternative  to the  multi-mode  service,  for  customers in the  long-haul  and
less-than-load trucking segments.


                                  Our Customers

As of December  31,  2000,  there were  approximately  206,000  user  devices in
service on our network and an established customer base of large corporations in
the following market segments:



                                                     Percentage of
          Market Segments                             Total Units
          ---------------                             -----------

                                                         
          Transportation and package delivery......         35%
          Field service............................         22
          Telemetry and point of sale..............          9
          eLink and other email  ..................         22
          Maritime and other.......................         12

          Total                                            100%
                                                           ----



As of December  31, 2000,  our customer  base  included  the  following  product
segments:




                                                     Percentage of
          Product Segments                            Total Units
          ----------------                            -----------

          Data:
          Terrestrial only:
                                                        
            eLink and other email..................        22%
            Other..................................        53
            Multi-mode and Satellite-only..........        12
            Private network customers..............         4

          Voice:
            Telephony and Dispatch................. ..      9
            Private network customers...............        0

          Total                                           100%
                                                          ----



                           Marketing and Distribution

We  market  our  wireless  services  through  strategic  distribution  partners,
resellers, our direct sales force, and dealers.

Strategic  Partners.  To penetrate  new wireless  data markets with  significant
growth  potential,  we have  signed a variety of  strategic  alliances  with key
industry leaders. We intend to leverage the marketing and distribution resources
and large existing  customer  bases of these  partners to address  significantly
more potential  customers than we would be able to address on our own. We have a
roster of  industry-leading  resellers  for our eLink  wireless  email  service,
including  SkyTel,  Metrocall,  Aether  Systems and  GoAmerica,  and we recently
expanded our existing  relationship  with Research in Motion Limited  ("RIM") to
permit RIM to resell its  BlackBerry(TM)  brand email service on our terrestrial
wireless network.  We have formed similar  distribution  alliances with Internet
service  providers  and with  outsourced  email  providers  Navipath  and United
Messaging.  We have also formed an  important  strategic  partnership  with IBM,
under which we will jointly  develop and market wireless  enterprise-wide  email
and other e-business solutions to corporate customers.  In the telemetry market,
we have partnered with a number of device manufacturers, resellers, and software
vendors  to  develop  a  variety  of  customer-driven   telemetry  applications,
including  for HVAC  system  monitoring,  utility  reading,  office and  vending
machine automation, and wireless point-of-sale applications. Key partners in the
wireless  point-of-sale and vending segments include US Wireless Data, eVendNet,
and C-Star. We are continuing to seek additional strategic distribution channels
that will  enable us to more fully  penetrate  our  existing  markets and access
potential new markets on an incremental basis.

Resellers. In addition to strategic distribution partners, we also use resellers
to distribute our services and to resell capacity on our network.  Typically, we
use resellers in  specialized  markets.  In the maritime  voice market,  Stratos
Global  Corporation  is  our  exclusive  reseller,   and  in  the  over-the-road
transportation  market,  Aether  Systems  is  our  exclusive  reseller.  In  the
telemetry  market,  we sell  capacity on our network to  resellers  such as ABB,
Ameritech,  Security Link and Detection Systems,  who integrate their customers'
equipment and systems with our network to provide a customized  application.  We
also use several  specialized  government  resellers,  one of which has included
certain of our  products  and  services on its General  Services  Administration
schedule.  We also sell bulk satellite capacity to private network customers who
use this capacity to support their own proprietary networks and products.

Direct Sales Force.  We have a direct sales force that is experienced in selling
our various wireless services.  Historically, our direct sales force has focused
on the requirements of business customers who need customized applications. With
the  launch  of our  eLink  wireless  email  service,  we have  also  built up a
significant  sales force  concentrated  on promoting  our eLink (sm) offering to
vertical markets. Our corporate accounts group is focused on promoting our eLink
wireless email service to wirelessly  enable  enterprise-wide  email systems for
Fortune 500 accounts.  Sales to corporate  account targets  generally  require a
sustained  marketing  effort lasting  several  months.  Prior to making a buying
decision,  a majority of the accounts  exercise a due  diligence  process  where
competitive alternatives are evaluated. Our employees often assist in developing
justification studies,  application design support,  hardware testing,  planning
and training.  In the wireless email area, our internal sales force has been key
to our ability to convey  crucial  customer  feedback to our product  management
team, enabling us to identify and develop new product and service features.

Dealers.  We use  dealers to market and sell our  satellite  voice and  dispatch
services.  These  dealers  typically  have strong  business  relationships  with
regional public safety  entities,  as well as with smaller field service fleets.
We believe  that  opportunities  exist to  capitalize  on the  strengths of this
channel  by  introducing  a  low-cost   terrestrial  data  device  with  minimum
integration requirements.  Typically these dealers serve as agents for sales and
service and do not provide  billing and collection  services.  These dealers are
generally  compensated with a standard  activation fee, plus a modest percentage
of the service revenue for which they are responsible.


                                   Our Network

Our  wireless  network  consists of (1) the  largest  two-way  terrestrial  data
network in the United States,  providing  service to 430 of the nation's largest
cities  and  towns,  including  virtually  all  metropolitan  areas,  and  (2) a
satellite  in  geosynchronous  orbit with  coverage  of the  continental  United
States,  Alaska,  Hawaii,  Puerto Rico, the U.S. Virgin Islands and U.S. coastal
waters and airspace.  The network provides a wide range of mobile data and voice
services.  In  2000,  we  expanded  our  network  coverage  for  our  eLink  and
BlackBerry(TM)  by  Motient  customers  to  include  Canada,  through  a roaming
agreement with the Canadian network operator, Bell Mobility.

Users of our network  access it through  subscriber  units that may be portable,
mobile or stationary devices. Generally,  subscriber units enable either data or
voice  communications  and are designed to operate  over either the  terrestrial
data-only network or the satellite  network,  which provides both voice and data
communications.

Subscriber  units  receive and transmit  wireless  data or voice  messages  from
either  terrestrial  base stations or our  satellite.  Terrestrial  messages are
routed to their  destination via data switches that we own, which connect to the
public data  network.  Satellite  messages are routed to their  destination  via
satellite data and voice switches, located at our headquarters, which connect to
the  public  data  and  switched  voice  networks.  A  data  switch  located  in
Lincolnshire,  Illinois  links the  terrestrial  and satellite  networks for the
delivery of our  multi-mode  data service  offered to  transportation  customers
through Aether Systems, our reseller in that market.

Our terrestrial network delivers superior  in-building  penetration,  completion
rates and response times  compared to other  wireless data networks  through the
use of a patented  single  frequency  reuse  technology  developed  by Motorola.
Single frequency reuse technology enables multiple base stations in a given area
to use the same  frequency.  As a result,  a message sent by a subscriber can be
received  by a number of base  stations.  This  technology  contrasts  with more
commonly  used  multiple  frequency  reuse  systems,  which provide for only one
transmission path for a given message at a particular  frequency.  In comparison
with  multiple  frequency  reuse  systems,   our  technology  provides  superior
in-building  penetration  and  response  times and  enables us to  incrementally
deploy  additional  capacity as  required,  instead of in larger  increments  as
required by most wireless networks.

Our  satellite  has an expected end of service date of 2006 subject to potential
malfunctions  and other  factors.  We have an agreement with TMI, which owns and
operates a technologically identical satellite, for back up restoral capacity if
our satellite fails or we need additional capacity. In return, we have agreed to
provide TMI with similar back-up service on our satellite.


                      Equipment and Supplier Relationships

We have contracts with a variety of vendors to supply  equipment  configurations
designed to meet the requirements of specific end-user applications. We continue
to pursue enhancements to these devices that will result in additional desirable
features and reduced cost of ownership.  Although many of the  components of our
products  are  available  from a number  of  different  suppliers,  we rely on a
relatively  small  number of key  suppliers.  The devices used with our services
generally  are  subject  to  various  product  certification   requirements  and
regulatory approvals before they are delivered for use by our customers.

Our eLink  wireless  email services use handheld  devices  manufactured  by RIM,
including the RIM 850 and RIM 857 wireless  handhelds.  These devices  include a
full QWERTY  keyboard and feature a unique thumb wheel that functions  similarly
to a PC mouse.  RIM also  manufactures  modems  designed to be  integrated  into
handheld field service  terminals,  telemetry  devices,  utility  monitoring and
security systems and certain other computing  systems.  Our supply  arrangements
with RIM are not exclusive,  and RIM manufactures  similar hardware products for
other companies, including Cingular Wireless (formerly BellSouth Wireless Data),
a principal competitor in the two-way wireless email market segment.

In addition to the messaging  devices  manufactured  by RIM, there are currently
over 30  other  types  of  subscriber  units  available  from  approximately  15
manufacturers that can operate on our terrestrial network.  Examples of portable
subscriber units include  ruggedized  laptop  computers,  small external modems,
handheld or palmtop "assistants," and pen based "tablets."

We are also working with other device  manufacturers and software  developers to
bring our network  services to other  existing  popular PDA and  wireless  email
platforms, such as palm-held and handheld devices.

Mobile  satellite  voice  telephones  are  offered  in  a  number  of  different
configurations  that deliver a variety of features and options to meet  specific
market needs.  The primary  suppliers of our voice terminal  equipment have been
Audio Intelligence Devices, Inc. ("AID"), the successor to Westinghouse Wireless
Solutions,  Inc., and Mitsubishi  Electronics  America.  We have no arrangements
with AID or  Mitsubishi  for the delivery of any new voice  terminal  equipment,
and,  when our  remaining  voice  inventory is depleted,  our customers who need
voice equipment will need to buy such equipment from AID,  Mitsubishi or another
manufacturer  whose  equipment  works on our  satellite  network,  through  such
vendors' designated  distribution channels.  Other vendors are exploring putting
new voice terminal equipment on our network and we are committed to working with
such  vendors  to  facilitate  their  development  efforts  with a  view  toward
certifying  new  equipment  on our  network.  We continue  working  with AID and
Mitsubishi to provide support and service to our voice customers.

Compaq Computer  provides the terrestrial  network  switching  computers under a
multi-year lease that extends through 2003, while AT&T provides network services
including a  nationwide  wireline  data  network,  and leased  sites which house
regional switching equipment for our terrestrial network.

We also have a  relationship  with AT&T as our vendor for  switched  inbound and
outbound  public  switched  telephone  network  services.  The satellite  system
terminates  calls  from its  telephone  product  via  both  the AT&T and  Sprint
networks.

We have an  agreement  with  Motorola  under  which  Motorola  provides  certain
continued  support  for the  terrestrial  network  infrastructure,  and  ongoing
maintenance and service of the terrestrial  network base stations.  An unrelated
third party also provides certain lease administration services for a portion of
the terrestrial network base station site leases.

The platform for our voice products, the communications ground segment,  depends
upon products from multiple  vendors,  most of which are generally  commercially
available.  Northern  Telecom  manufactures  and supports the core voice switch.
Digital  Equipment  Corporation  supplies the  computing  platform that runs the
communications ground segment.

We own certain patents,  technical data and other intellectual property that has
been developed in connection  with our  communications  network.  We jointly own
certain  intellectual  property with TMI, and we license  intellectual  property
from other vendors for operation of our network. We believe our ownership of and
rights to  intellectual  property for our system is sufficient  for our business
purposes.

The terrestrial network,  and certain of its competitive  strengths such as deep
in-building  penetration,  is based  upon  single  frequency  reuse  technology.
Motorola holds the patent for the single  frequency  reuse  technology.  We have
entered into support  agreements with Motorola to provide for certain support of
the operations of the terrestrial  network.  However,  there can be no assurance
that Motorola will not enter into arrangements with our competitors,  or that if
it does, such arrangements would not harm our business.



                                   Competition

The wireless  communications industry is highly competitive and is characterized
by  constant  technological  innovation.  We compete by  providing  unparalleled
geographic coverage, deep in-building  penetration,  and guaranteed reliability.
These features  distinguish us from the competition.  Our wireless solutions are
used by businesses that need critical customer and operational  information in a
mobile environment.

We  offer  multiple  business  lines  and  compete  with a  variety  of  service
providers, from small startups to Fortune 500 companies. Our competitors include
service  providers in several  markets - dedicated  mobile  data,  PCS/cellular,
narrowband  PCS/enhanced  paging,  emerging  technology  platforms,  and  mobile
satellite services.

Dedicated Mobile Data.  Companies using packet data on dedicated mobile networks
provide  wireless data services in direct  competition with a number of our data
products. In a packet data environment messages are transmitted in short bursts.
Competitors using this technology include Cingular Wireless (formerly  BellSouth
Wireless  Data) and  Metricom.  Cingular  Wireless  operates a  terrestrial-only
network  that   provides   data   services  to   customers  in  field   service,
transportation  and utility  industries,  and two-way  messaging  service to the
horizontal  market.  We believe that our network  provides  broader coverage and
superior  in-building  penetration than the Cingular  network.  In addition,  we
continue  to upgrade our network in major  metropolitan  areas to offer  broader
geographic  coverage and faster speeds.  Metricom's  Ricochet  service  provides
wireless access to the Internet,  private  intranets,  local area networks,  and
email.  The  Metricom  modem's  bulk and limited  hands-off  capability  between
transmitter  sites  limits  the  mobility  of the user.  Metricom's  service  is
currently  available  in  parts  of 14  metropolitan  areas.  Coverage  within a
metropolitan area is often limited to the dense urban portions of a given market
as well as airports.  The company recently announced  postponement of additional
deployments outside of its most significant existing markets.

RIM offers  BlackBerry(TM),  a wireless email service,  that runs on the Motient
and  Cingular  networks.  BlackBerry(TM)  offers  wireless  email  and  Personal
Information Management (PIM) functionality.  Until now,  BlackBerry(TM) has only
served  users  in  a  Microsoft  Exchange  environment;  however,  RIM  recently
announced a Lotus Notes version that will soon be available.  Because RIM offers
BlackBerry  on the Motient and Cingular  networks,  RIM is both a reseller and a
competitor.  With eLink,  BlackBerry(TM) by Motient, and eLink service Fortified
with  Yahoo!,  as well as our  arrangements  with other  resellers  and  content
providers, we believe that we offer the most complete array of wireless internet
and wireless email services currently available.

PCS/Cellular.  PCS and cellular services  presently serve the majority of mobile
communications users in the United States, with more than 95 million subscribers
at the end of  2000.  There  are a large  number  of  cellular  and PCS  systems
providing  voice service  throughout  most of the United States,  with no single
competitor providing the seamless,  national footprint that is available through
our network.  As the average voice  revenue per  subscriber  declines,  wireless
voice carriers are beginning to focus on delivering wireless data services in an
effort to differentiate their voice products and to retain customers.  The first
of these services is the Sprint PCS Wireless Web. Sprint allows circuit switched
wireless  web access to  several  content  services  using the  phone's  numeric
keypad.  Other voice carriers are also beginning to offer wireless data services
through  mobile  phones,  but we believe  the  limitations  of  today's  PCS and
cellular  features and networks will limit  competition  in our target  markets.
Users must have a digital phone and service,  and must type  messages  using the
awkward numeric  keypad.  They do not have access to data services while roaming
onto analog networks, which detracts from the user experience.  Pricing today is
based on per-minute charges that can accrue quickly as users are required to log
on to the Sprint web browser and use Yahoo!  to send or receive email, or access
content services.

Cellular  digital packet data (CDPD),  the cellular  industry's only packet data
service,  is available in fewer geographic markets than our service,  and covers
approximately  55% of the U.S.  population.  Expansion of the CDPD  networks has
slowed  considerably as carriers such as AT&T and Verizon Wireless look to other
means to provide data services to their voice  customers.  Some cellular and PCS
carriers offer short message  capabilities,  depending on the protocol they use,
and expect to offer larger capacity packet data services in the next few years.

Narrowband  PCS/Enhanced  Paging.  Most traditional  paging  companies,  such as
SkyTel, Arch and Metrocall, are expanding beyond their traditional alpha/numeric
paging into two-way  wireless  messaging  services using narrowband PCS. Typical
applications include wireless email, near-real time delivery of stock quotes and
other time sensitive information, and mobile workforce communications.  Although
some paging  companies have begun to offer limited two-way  messaging  services,
initial challenges in coverage,  responsiveness  and throughput,  as well as the
high cost of service,  currently limit their adoption by our targeted customers.
These services primarily compete with our eLink wireless email services. We have
signed  reseller  agreements with SkyTel and Metrocall under which these parties
market  our  eLink  services  to  their  customers.  We  have  similar  reseller
agreements with additional national distribution partners.

Emerging  technology  platforms.  A variety  of new  technologies,  devices  and
services will result in new types of competition for us in the near future.  The
emergence of new protocols such as WAP (Wireless  Access Protocol) and Bluetooth
is  expected  to  enable  the use of the  Internet  as a  platform  to  exchange
information among people with different  devices running on different  networks.
WAP defines a protocol for altering  Internet  sites to make their  content more
readily  accessible to mobile user devices,  where bandwidth is limited.  Mobile
telephone  users have adopted this protocol,  as WAP provides  Internet  content
access in a similar manner to our products.  Bluetooth is a wireless  networking
technology that will enable  communications  between disparate devices in a home
or office  setting.  Manufacturers  such as Nokia,  Ericsson  and  Qualcomm  are
developing  mobile  phones  and  devices  to work  with  the  WAP and  Bluetooth
protocols.  Within the next few years, it is expected that new, so-called "2.5G"
and "3G"  technologies,  new forms of CDMA, TDMA and GSM, will increase the data
capabilities  of voice and data  services and may have a  competitive  impact on
portions of our business.

The  growth  in  wireless  data  opportunities  has  led  traditional   hardware
manufacturers and software  developers to invest in technologies that will allow
the migration of core products and services to a mobile  environment.  Companies
like IBM, Oracle,  Siebel,  Sun and Lucent have made significant  investments in
the  area of  mobility  to  guarantee  their  place  in  both  the  desktop  and
mobile/handheld computing environments.

Although  the  emergence  of  new  technologies  and  new  players  expands  our
competitive  environment,  we believe it provides more of an opportunity  than a
threat. For example,  in the case of WAP, we have incorporated the protocol into
our Yahoo!  offering and our Internet and Intranet browser  applications for use
with our eLink service. We have also formed a strategic  partnership with IBM to
develop mobile  services that will be sold into IBM's  enterprise  customers and
users of Lotus Notes.  Through IBM and other  partners,  we intend to be able to
offer a full  range of  services  - from  simple  wireless  email to  customized
wireless data solutions - to our target customers in the enterprise market.

Mobile  Satellite  Services.  A number of  companies  are selling or  developing
mobile  satellite  services  that  compete  with our  satellite  voice  and data
services.  We do not view these mobile satellite  services as competitors to the
terrestrial  component of our network  because they lack the extensive urban and
in-building coverage we provide.

We face competition in the limited satellite voice and data services market from
several companies that utilize a variety of satellite technologies. TMI received
permission in November 1999 from the FCC to offer mobile  messaging  services in
the United  States using its  Canadian-licensed  satellite.  Its  offerings  are
similar to many of our satellite voice and data services.  As described above in
"Recent  Developments,"  we have agreed to combine our satellite  communications
business  with  TMI's in  Satellite  Ventures.  This  transaction  is subject to
various  conditions,  and is not  expected  to close  for at  least  six to nine
months.  During the period  prior to closing of this  transaction,  we expect to
face competition from TMI in the United States in the mobile satellite  services
segment.  Globalstar  launched  its  satellite  communications  service in 2000,
providing  voice and data services in limited areas of the world,  including the
areas covered by our satellite.  Globalstar's system consists of a constellation
of  forty-eight  low earth  orbiting  satellites  that  covers  more than eighty
percent of the globe. Although Globalstar offers or plans to offer global voice,
fax,  and data  services,  we do not foresee  Globalstar  providing a nationwide
dispatch  service  such as ours or a data  service  in excess  of 9600 bps.  The
Globalstar  system is a more  complex and  expensive  system than the  satellite
component of our network,  and offers some  advantages  over our voice  services
such  as  smaller  handheld   telephones,   global  coverage,   and  in  certain
circumstances,  reduced transmission delay.  Globalstar's  subscriber growth, as
publicly reported, has been slower than originally projected.

In addition to complex  non-geosynchronous  systems  designed to provide  mobile
voice  services,  there are relatively  simple  "little" low earth orbit systems
that would provide only low-speed packet data services. These systems, including
ORBCOMM  Global,  L.P.,  and LEO One USA, have access to  comparatively  limited
spectrum  and are  expected  to compete  for  customers  who  require  specialty
applications such as asset tracking services for untethered trailers.

                                    Employees

At February 28, 2001, we had 482 employees. None of our employees is represented
by a labor union. We consider our relations with our employees to be good.


                           Our Investment in XM Radio

In addition to our core wireless business,  we have a significant  investment in
XM Satellite  Radio  Holdings  Inc., a development  stage  company.  XM Radio is
seeking to become a nationwide  provider of digital quality audio  entertainment
and information  programming transmitted directly by satellites to vehicle, home
and  portable  radios.  XM  Radio  owns one of two FCC  licenses  to  provide  a
satellite  digital  audio  radio  service  for the  United  States.  XM Radio is
developing its service, which it will call "XM Radio," to provide a wide variety
of  music,  news,  talk,  sports  and  other  programming  offering  up  to  100
distinctive channels.

XM Radio has a separate  management  team and a business  plan that is  distinct
from our core wireless  business.  To date, XM Radio has received  substantially
all of its required  funding from  independent  sources in exchange for debt and
equity  interests  in XM Radio.  We are not  required to provide any  additional
funding to XM Radio,  and we  currently  expect  that XM Radio will  continue to
obtain   substantially   all  of  its  required   funding  from  other  sources.
Accordingly,  we do not expect that  development  of the XM Radio  business will
have a material effect on our consolidated liquidity,  capital resources or cash
flows.

For more details  about XM Radio,  its business and a discussion of certain risk
factors related to its business plan,  readers are urged to review carefully the
prospectus  (including  supplements)  included  within XM  Radio's  registration
statement (File No. 333-47570) and current report on Form 8-K dated February 21,
2001 (File No. 0-27441),  as well as XM Radio's other reports filed with the SEC
from time to time.


                                   Regulation

The satellite network and terrestrial  two-way wireless data network used in our
core wireless  business are regulated to varying degrees at the federal,  state,
and  local  levels.   Various   legislative   and  regulatory   proposals  under
consideration  from  time to  time by  Congress  and  the FCC  have in the  past
materially   affected   and   may   in  the   future   materially   affect   the
telecommunications industry in general, and our wireless business in particular.
The  following  is a summary  of  significant  laws,  regulations  and  policies
affecting the operation of our core wireless business. In addition, many aspects
of  regulation  at the federal,  state and local level  currently are subject to
judicial review or are the subject of administrative or legislative proposals to
modify,  repeal, or adopt new laws and administrative  regulations and policies.
Neither the outcome of these  proceedings nor their impact on our operations can
be predicted at this time.

    General Regulatory Matters Applicable to Our Wireless Business

The  ownership  and  operation of our  satellite  and  terrestrial  networks are
subject to the rules and  regulations  of the FCC,  which  acts under  authority
established  by the  Communications  Act and related  federal laws.  Among other
things,  the FCC allocates  portions of the radio frequency  spectrum to certain
services and grants  licenses to and regulates  individual  entities  using that
spectrum. We operate pursuant to various licenses granted by the FCC.

We are a Commercial Mobile Radio Service provider and therefore are regulated as
a common  carrier.  We must  offer  service  at just and  reasonable  rates on a
first-come,   first-served   basis,   without   any   unjust   or   unreasonable
discrimination, and we are subject to the FCC's complaint processes. The FCC has
forborne from applying numerous common carrier  provisions of the Communications
Act to Commercial  Mobile Radio Service  providers.  In  particular,  we are not
subject to traditional public utility rate-of-return  regulation, and we are not
required to file tariffs with the FCC for our domestic services.

As a provider of  interstate  telecommunications  services,  we are  required to
contribute to the FCC's universal  service fund, which supports the provision of
affordable  telecommunications to high-cost areas, and the provision of advanced
telecommunications  services  to  schools,  libraries,  and  rural  health  care
providers.  Under the FCC's  current  rules,  we are  required to  contribute  a
percentage of the end-user telecommunications revenues we derive from the retail
sale  of  interstate  telecommunications  services.  Currently  excluded  from a
carrier's universal service contribution base are end-user revenues derived from
the sale of information and other non-telecommunications  services and wholesale
revenues derived from the sale of  telecommunications.  A significant portion of
the terrestrial  network revenue falls within the excluded  categories,  thereby
reducing our universal  service  assessments.  Current rules also do not require
that we impute to our contribution  base retail revenues derived when we use our
own transmission  facilities to provide a service that includes both information
service and telecommunications  components.  There can be no assurances that the
FCC will retain the exclusions  described herein or its current policy regarding
the  scope  of a  carrier's  contribution  base.  We may  also  be  required  to
contribute to state universal  service  programs.  The requirement to make these
state  universal  service  payments,  the  amount of which in some  cases may be
subject to change and is not yet determined,  may have a material adverse impact
on the conduct of our business.

We  are  subject  to the  Communications  Assistance  for  Law  Enforcement  Act
("CALEA").  Under  CALEA,  we must  ensure  that law  enforcement  agencies  can
intercept  certain  communications  transmitted over our networks.  We must also
ensure that law enforcement agencies are able to access certain call-identifying
information  relating to  communications  over our  networks.  The  deadline for
complying with the CALEA requirements and any rules subsequently promulgated was
June 30,  2000.  We have pending with the FCC a petition for an extension of the
deadline with respect to certain of our equipment,  facilities, and services and
we have been working with law enforcement to arrive at an agreement on a further
extension of this deadline and on an extension of the deadline for other Motient
equipment,  facilities,  and  services.  Possible  sanctions  for  noncompliance
include substantial fines and possible imprisonment of company officials.  It is
possible that we may not be able to comply with all of CALEA's  requirements  or
do so in a timely manner. Where compliance with any requirement is deemed by the
FCC to be not "reasonably achievable," we may be exempted from such requirement.
In addition,  CALEA establishes a federal fund to compensate  telecommunications
carriers  for  all  reasonable  costs  directly  associated  with  modifications
performed by carriers in connection  with  equipment,  facilities,  and services
installed or deployed on or before January 1, 1995.  For equipment,  facilities,
and  services  deployed  after  January 1, 1995,  the CALEA fund is  supposed to
compensate  carriers for any  reasonable  costs  associated  with  modifications
required to make  compliance  "reasonably  achievable."  It is possible that all
necessary  modifications  will not  qualify for this  compensation  and that the
available  funds will not be  sufficient  to reimburse  us. The  requirement  to
comply  with CALEA  could have a material  adverse  effect on the conduct of our
business.

As a matter of general  regulation  by the FCC, we are  subject to,  among other
things,  payment  of  regulatory  fees and  restrictions  on the  level of radio
frequency  emissions of our systems' mobile terminals and base stations.  Any of
these regulations may have an adverse impact on the conduct of our business.

Our FCC licenses are subject to restrictions in the  Communications Act that (1)
certain FCC licenses may not be held by a corporation  of which more than 20% of
its capital stock is directly  owned of record or voted by non-U.S.  citizens or
entities or their  representatives  and (2) that no such FCC license may be held
by a corporation  controlled by another  corporation  ("indirect  ownership") if
more than 25% of the controlling  corporation's capital stock is owned of record
or voted by non-U.S.  citizens or entities or their representatives,  if the FCC
finds that the public  interest is served by the refusal or  revocation  of such
license.  However,  with  the  implementation  of the  Basic  Telecommunications
Agreement, negotiated under the auspices of the World Trade Organization ("WTO")
and to which the United  States is a party,  the FCC will presume that  indirect
ownership interests in our FCC licenses in excess of 25% by non-U.S. citizens or
entities will be permissible to the extent that the ownership interests are from
WTO-member   countries.   The  Basic   Telecommunications   Agreement  and  this
presumption regarding indirect ownership by non-U.S. citizens or entities do not
apply to XM Radio's satellite radio license.  If the 25% foreign ownership limit
is exceeded,  the FCC could potentially take a range of actions which could harm
our business.

    Our Terrestrial Network

Our  terrestrial  network  consists  of base  stations  licensed  in the 800 MHz
Business Radio and Specialized  Mobile Radio ("SMR")  services.  The terrestrial
network is interconnected with the public switched telephone network.

The FCC's licensing regime in effect when the majority of authorizations used in
the  terrestrial  network  were issued  provided for  individual,  site-specific
licenses.  The FCC has since  modified the licensing  process  applicable to SMR
licenses  in the band.  SMR  licenses  are now issued by  auction in  wide-area,
multi-channel  blocks. The geographic area and number of channels within a block
vary depending on whether the frequencies  are in the so-called  "Upper 200" SMR
channels,  the "General  Category,"  or the "Lower 80." In  addition,  wide-area
auction winners in the Upper 200 have the right to relocate incumbent  licensees
to other  "comparable"  spectrum.  Auction  winners in the General  Category and
Lower 80 do not have these same relocation  rights and must afford protection to
incumbent  stations.  Incumbent stations may not, however,  expand their service
areas.

Wide-area auction winners have substantial  flexibility to install any number of
base  stations  including,  in the case of the  General  Category  and  Lower 80
channels,  base  stations  that  operate  on  the  same  channels  as  incumbent
licensees.  We were an  incumbent  in the Upper 200 and remain an  incumbent  on
certain General Category  channels.  We are also a General Category and Lower 80
auction  winner.  Although  the FCC  requires  General  Category  and  Lower  80
geographic  licensees to protect  incumbents  from  interference,  there is some
concern that such  interference may occur and that practical  application of the
interference-protection rules may be uncertain.

We believe that we have licenses for a sufficient number of channels to meet our
current  capacity  needs  on  the  terrestrial  network.  We  recently  received
authorizations for 33 wide-area licenses won in the General Category auction. We
were  also  the high  bidder  on two  Lower  80  licenses.  To the  extent  that
additional  capacity is required,  we may participate in other upcoming auctions
or acquire channels from other licensees.  As part of its new licensing  regime,
the FCC permits  wide-area  geographic  licensees,  with prior FCC approval,  to
assign a portion of their spectrum  ("spectrum  disaggregation") or a portion of
their geographic service area ("geographic  partitioning"),  or a combination of
the two, to another entity. While this authority may increase our flexibility to
acquire  additional  base  stations,  the practical  utility of these options is
uncertain at this time.

We operate the terrestrial network under a number of waivers involving the FCC's
technical rules,  including rules on station  identification,  for-profit use of
excess  capacity,  system loading,  and multiple station  ownership.  Several of
these  waivers  were first  obtained  individually  by IBM and  Motorola,  which
operated separate wireless data systems until forming the ARDIS joint venture in
1990. The FCC  incorporated a number of these waivers into its regulations  when
it implemented  Congress's  statutory  provision  creating the Commercial Mobile
Radio Service  classification,  and we no longer  require those  waivers.  As of
March 3, 1999, we completed our planned  construction of base stations for which
extended implementation was granted by the FCC in 1996.

    Our Satellite Network

We are  licensed by the FCC to provide a broad range of mobile  voice,  data and
dispatch  services  via  satellite  to land,  air and  sea-based  customers in a
service area consisting of the continental United States, Alaska, Hawaii, Puerto
Rico, the U.S. Virgin Islands and U.S. coastal waters and airspace.  We are also
authorized  to provide  fixed  site voice and data  services  via  satellite  to
locations  within this service area, so long as such services remain  incidental
to our mobile  communications  services.  We are authorized to build, launch and
operate three geosynchronous satellites in accordance with a specified schedule.
We are not in compliance with the schedule for  commencement and construction of
our second and third  satellites  and we have  petitioned the FCC for changes to
the  schedule.  Certain of these  extension  requests have been opposed by third
parties.  The FCC has not acted on our  requests.  The FCC has the  authority to
revoke the authorizations for the second and third satellites and, in connection
with such a revocation,  could exercise its authority to rescind our license. We
believe that the exercise of such  authority to rescind the license is unlikely.
The term of the  license  for each of our  three  authorized  satellites  is ten
years,  beginning when we certify that the respective  satellite is operating in
compliance  with the license.  The ten-year term of the license for MSAT-2 began
August 21, 1995. Although we anticipate that the authorizations are likely to be
extended in due course to correspond to the useful lives of the  satellites  and
that new  licenses  will be  granted  for  replacement  satellites,  there is no
assurance of such extension or grant.

On January 16, 2001, we amended our pending  application  with the FCC to launch
and operate a second-generation  mobile satellite system in numerous respects to
seek FCC approval for the transactions  involving Mobile Satellite Ventures LLC,
including  the  combination  of our satellite  communications  business with TMI
Communications   and  Company,   Limited   Partnership   ("TMI").   See  "Recent
Developments - Mobile  Satellite  Ventures LLC." First, we applied to assign our
existing FCC  licenses  and  authorizations  and pending  applications  to a new
company,  Mobile Satellite  Ventures  Subsidiary LLC ("MSV Sub"), that will be a
wholly owned  subsidiary of a company  jointly owned by us; TMI, the operator of
the  Canadian-licensed  MSS system;  and a group of new  investors.  Because the
indirect  foreign  ownership  of MSV Sub will exceed 25%, we have also asked the
FCC for a  declaratory  ruling that  indirect  foreign  ownership  in MSV Sub in
excess of 25% is in the public interest. We also proposed to modify our existing
FCC licenses and authorizations and pending applications to allow us and MSV Sub
to  operate  with  MSAT-1  (the  satellite  licensed  to TMI) as well as MSAT-2.
Finally, we sought FCC authority to launch and operate a next-generation  mobile
satellite   system,   which  will  include  the  deployment  of  satellites  and
terrestrial  base stations  operating in the same  frequencies  as an integrated
network.  In  addition  to our  application,  TMI has  applied to assign its FCC
licenses  to MSV Sub.  There is no  guarantee  that  the FCC  will  grant  these
applications.  In addition,  Mobile Satellite  Ventures  (Canada) Inc., in which
Motient will have a minority interest, has applied to the Canadian government to
operate the  replacement  satellite for MSAT-1.  There is no guarantee  that the
Canadian government will approve this application.

MSAT-2 is designed to operate  over the  1530-1559/1631.5-1660.5  MHz bands (the
"L-band"). We are currently licensed to operate in the 1544-1559/1645-1660.5 MHz
bands (the "upper  L-band").  The FCC has designated us as the licensee for both
MSS and  Aeronautical  Mobile  Satellite  (Route) Service  ("AMS(R)S").  AMS(R)S
includes  satellite  communications  related to air traffic control,  as well as
aeronautical  safety-related  operational  and  administrative  functions.  As a
condition  to its  authorization,  we are  required  by the FCC to be capable of
providing priority and preemptive access for AMS(R)S traffic in the upper L-band
and to be  interoperable  with and capable of  transferring  AMS(R)S  traffic to
international  and  foreign  systems   providing  such  service.   We  currently
anticipate  we will be able to meet  these  requirements  without  any  material
adverse effect on our business. If we are unable to meet these requirements, the
FCC may authorize and give priority  spectrum  access to one or more  additional
satellite systems that meet the specified requirements.

We have applied for authorization to operate in the  1530-1544/1631.5-1645.5 MHz
band (the "lower L-band").  If we are assigned  spectrum in the lower L-band, we
will be required by the FCC to provide similar priority and preemptive access in
that spectrum to maritime  distress and safety  communications.  With respect to
our mobile voice terminals, we currently anticipate we will be able to meet this
requirement  without any material  adverse  effect on our business.  The Federal
Aviation  Administration  filed  comments,   however,  in  connection  with  our
application to operate up to 30,000 mobile data terminals that were transitioned
from leased space  segment to MSAT-2 in late 1995,  stating its concern that the
mobile data  terminals  cannot be operated in compliance  with our obligation to
provide priority and preemptive access in the upper L-band. The FAA has proposed
that we operate the mobile data terminals in the lower L-band.  We have received
successive  six-month grants of special  temporary  authority,  under a two-year
waiver of the FCC's rules on priority and  preemptive  access,  to operate up to
15,100 mobile data  terminals in the lower L-band.  This number was increased to
33,100  terminals  pursuant to our  acquisition of the mobile data equipment and
services previously licensed to Rockwell.  The two-year waiver expired on August
1, 1997,  but remains in effect  while our request for a two-year  extension  of
that waiver is pending at the FCC. We will need additional authority to increase
the number of mobile data  terminals  that we are authorized to operate in order
to achieve planned growth in our data services, and on July 27, 1999, we applied
for  authority to operate an  additional  36,900  mobile  terminals in the lower
L-band.  We will also need the FCC to grant us or another  entity  authority  to
operate over our space segment to operate mobile data terminals with a different
transmission   design  than  those  operated  under  our  current  lower  L-band
authorization. Transmissions from these terminals require a wider bandwidth than
do  transmissions  from our  existing  terminals.  We were  granted a  six-month
special  temporary  authority  to  operate  up to  10,000 of these  mobile  data
terminals  on  February  12,  1999.  We have since  assigned  this STA to VISTAR
Telecommunications,  Inc. ("VISTAR"),  the manufacturer of these wider-bandwidth
mobile data terminals. VISTAR has applied for a blanket license to operate up to
100,000 of these terminals  using our satellite.  There can be no assurance that
we or others will  continue to receive  authority  to operate  these mobile data
terminals or other mobile terminals in the lower L-band over our space segment.

Our mobile  terminal  authorizations  are  subject to  compliance  with  certain
requirements regarding interference  protection to the Global Positioning System
("GPS"). With the consent of the FAA, the FCC granted our application subject to
certain  conditions,  including  that  the  grant  may  be  modified  after  the
interference issue is studied. The FCC is now proposing to impose more stringent
limits on the  out-of-band  emissions from certain mobile  terminals,  including
those  used in  connection  with our  system,  in order to  protect  GPS and the
Russian  Global  Navigation  Satellite  System.  Some  of  our  existing  mobile
terminals may not comply with this proposed standard.  Under the FCC's proposal,
all mobile  terminals  commissioned  after January 1, 2002 must comply with this
new limit, and any terminals not meeting the new specifications  must be retired
or retrofitted by 2005. While we believe that we will be able to comply with the
proposed 2002  deadline for newly  commissioned  terminals,  we have opposed the
2005 deadline for the  retirement  or  retrofitting  of existing,  non-compliant
terminals.  If adopted by the FCC,  this  policy  could have a material  adverse
effect on our business.

Our license authorizes MSAT-2 to operate using certain  telemetry,  transfer and
control  frequencies  in the Ku-band.  We operate MSAT-2 at the 101 degrees W.L.
orbital location. GE American Communications,  Inc. also operates a satellite at
the 101 degrees  W.L.  orbital  location.  We and GE American  have an agreement
covering  MSAT-2 that may require us to modify our  operations  or make  certain
payments to GE  American if our  operations  cause  interference  to those of GE
American.  While  there  can  be  no  assurances,   we  do  not  anticipate  any
interference in the operations of MSAT-2 and those of GE American.

Our subscriber  equipment will operate in L-band frequencies that are limited in
available   bandwidth.   The   feeder-link   earth   stations  and  the  network
communications  controller of the  communications  ground segment operate in the
more plentiful fixed satellite service Ku-band frequencies. Of the 30 MHz in the
upper  L-band  frequencies,   we  are  currently  licensed  to  operate  in  the
1544-1559/1645.5-1660.5  MHz bands. Of the 30 MHz assigned to us by the FCC, one
MHz is limited to AMS(R)S and one-way paging and two MHz are limited to distress
and  safety  communications.  We do not plan to  operate  on these  three MHz of
bandwidth.

In June 1996, the FCC issued a notice of proposed rulemaking proposing to assign
to us the  first 28 MHz of  internationally  coordinated  L-band  spectrum  from
either the upper or lower portion of the MSS L-band.  Under the FCC's  proposal,
we would  have  first  priority  access  to use the  lower  L-band  spectrum  as
necessary to compensate for spectrum  unavailable for  coordination in the upper
L-band. In the event the United States is able to coordinate more than 28 MHz of
L-band  spectrum,  the FCC has proposed  allowing other  applicants to apply for
assignment  of those  frequencies.  Certain  entities  have  filed  with the FCC
petitions to deny our  application  and  comments  opposing  the  assignment  of
additional  frequencies to us. While there can be no assurances,  we believe the
FCC is likely to grant our application.

In the Ku-band  frequencies,  we are currently  licensed to operate MSAT-2 using
200 MHz within the 10.75-10.95 GHz band for downlink  transmissions  and 200 MHz
within the 13.0-13.15 GHz and 13.2-13.25 GHz bands for uplink transmissions.  On
November 29, 2000,  Globalstar,  L.P.  ("Globalstar")  filed an  application  to
operate a satellite at 101 degrees  W.L.  using 250 MHz within the 10.75 - 10.95
GHz and 11.2 - 11.45 GHz bands for downlink transmissions and 250 MHz within the
12.75 - 13.25 GHz band for uplink  transmissions.  We have opposed  Globalstar's
application  because its proposed  frequencies  could  conflict with our current
operations.  In  addition,  on December 14,  2000,  we applied for  authority to
operate using an additional  250 MHz of spectrum  within the 11.2-11.45 GHz band
for downlink  transmissions and an additional 250 MHz within the 12.75-13.00 GHz
band for uplink transmissions.  We also opposed Globalstar's application because
its proposed frequencies could conflict with our proposed operations pursuant to
this application.

Spectrum availability, particularly in the L-band, is a function not only of how
much  spectrum is  assigned  to us by the FCC,  but also the extent to which the
same frequencies are used by other systems in the North American region, and the
manner of such use. All spectrum use must be coordinated with other parties that
are providing or plan to provide mobile  satellite-based  communications  in the
same  geographical  region  using the same  spectrum.  At this  time,  the other
parties with which spectrum use must be coordinated include Canada,  Mexico, the
Russian Federation and Inmarsat.  In addition, a new Japanese system proposes to
operate in a manner that would  interfere  with our system and other  systems in
this region, and this Japanese system's spectrum use will have to be coordinated
with these regional operators.

Use of the spectrum is determined  through a series of negotiations  between the
United States government and the other user agencies,  pursuant to the rules and
regulations of the International  Telecommunication  Union. For the past several
years, each of the countries and international  organizations  that have used or
will use L-band  frequencies within the North American region have met regularly
to negotiate and coordinate their current and future use of that spectrum.  This
international  coordination  process is not yet  complete  and there has been no
spectrum  sharing  arrangement  since  the  end of  1999.  In the  absence  of a
coordination agreement, we must operate our system on a non-interference basis.

We estimate that  international  coordination will make  approximately 20 MHz of
L-band  spectrum   available  to  the  United  States  for  MSAT-2.   Since  the
coordination  process  involves many parties and there is uncertainty  about the
total  outcome,  the actual  amount of spectrum  available may be less than that
estimated.  The  operation  of the new  Japanese  system  may have the effect of
further  reducing  our  access to  spectrum.  Some of the  spectrum  that may be
available  to us may  include a  portion  of the 28 MHz  lower  L-band  spectrum
adjacent to the frequencies already assigned to us by the FCC.

The International  Telecommunications Union Radio Regulations include a table of
frequency  allocations  that prescribe the permitted uses of the radio spectrum.
As a result of the  International  Telecommunications  Union  satellite plan for
parts of the Ku-band,  there also may be  restrictions  on our ability to deploy
feederlink  earth stations in Alaska,  Hawaii,  Puerto Rico, and the U.S. Virgin
Islands.

During the course of our FCC licensing  process and several times since, the FCC
has stated that there is only  enough  spectrum in the MSS L-band for the FCC to
authorize a single mobile  satellite  services  system to provide service in the
United States. On November 30, 1999,  however,  the FCC granted two applications
to use TMI's Canadian-licensed system to provide service in the United States to
up to 125,000 mobile terminals.  TMI's system operates in the MSS L-band and has
a satellite footprint that covers the United States. We appealed the FCC's grant
of  these  applications  to the  United  States  Court of  Appeals  for the D.C.
Circuit,  but the court  upheld the FCC's  grant.  TMI's entry into the domestic
U.S.  marketplace  may increase  TMI's demand for spectrum in the  international
coordination  process  and  otherwise  make it more  difficult  for us to secure
access to 20 MHz of spectrum.  Since the initial grant to use TMI's system,  the
FCC has  granted an  additional  application  to use TMI's  system and may grant
others.

The FCC may authorize other  foreign-licensed  L-band systems to provide service
to domestic U.S.  customers.  There are a number of applications  pending before
the  Commission  to access  Inmarsat Ltd.  ("Inmarsat"),  licensed by the United
Kingdom,  to provide service in the U.S. We have opposed these applications on a
number of grounds,  including  Inmarsat's failure to comply with the Open-Market
Reorganization for the Betterment of International Telecommunications Act (ORBIT
Act),  which sets certain  criteria which Inmarsat must meet before entering the
U.S.  domestic  market.  There  is no  assurance  that our  opposition  to these
applications  will be  successful.  Inmarsat's  entry  into  the  domestic  U.S.
marketplace  may increase  Inmarsat's  demand for spectrum in the  international
coordination  process  and  otherwise  make it more  difficult  for us to secure
access to 20 MHz of spectrum.

We are operating  under waivers of certain FCC rules. In 1996, the FCC issued an
order requiring all Commercial  Mobile Radio Service providers to offer what are
known as "enhanced 9-1-1 services" including the ability to automatically locate
the position of all transmitting  mobile terminals.  We would not have been able
to offer this automatic location information without adding substantially to the
cost of our mobile equipment and reconfiguring our communications ground segment
software.  The FCC decided not to impose  specific  new  requirements  on mobile
satellite services providers, including Motient, at that time. The FCC did state
its  expectation  that such  providers  eventually  would be required to provide
"appropriate access to emergency  services." In December 2000, the FCC initiated
a proceeding  seeking  comment on whether to  eliminate  the  exception  allowed
mobile satellite  services  providers from the requirement to provide  "enhanced
9-1-1  services."  A decision to impose  this  requirement  on mobile  satellite
services providers could have a material adverse effect on our business.

The FCC enacted "rate integration" regulations pursuant to Section 254(g) of the
Communications  Act which  requires that  providers of interstate  interexchange
telecommunications  services  charge the same rates for these  services in every
state,  including  Puerto Rico and the U.S. Virgin Islands.  We have opposed the
imposition of this rate integration requirement on our mobile satellite services
system,  so that we may preserve the  flexibility  to charge more for service in
areas covered by satellite beams that require more satellite  power. The FCC has
denied  our  request  for  a  permanent  exemption  from  its  rate  integration
requirement,  but has not yet ruled on our request  for a temporary  waiver of a
year or more. The FCC has granted us an interim waiver from its rate integration
requirement  until its decision on our temporary  waiver request.  In July 2000,
the United States Court of Appeals for the District of Columbia  Circuit vacated
the FCC's decision that the "rate  integration"  provision of the Communications
Act  applies to CMRS  providers.  The FCC has not yet acted in  response  to the
court's ruling.









Item 2.  Properties.

We lease  approximately  94,000 square feet at our headquarters office space and
network operations center in Reston,  Virginia.  The lease has a term which runs
through  August 3, 2003 (which may be extended at our election for an additional
five years). In addition, we lease a back-up Ku-band radio frequency facility in
Alexandria,  Virginia.  We also lease approximately  86,000 square feet of space
for office space and an operations center in Lincolnshire,  Illinois,  the lease
for which  expires  December 31, 2005 (which may be extended at our election for
an  additional  five  years).  We also lease  site  space for nearly  2,000 base
stations and antennas across the country for the terrestrial  network under one-
to five-year lease contracts with renewal provisions. We anticipate that we will
be able to gain  access to  additional  base  station  sites when  necessary  on
acceptable terms.


Item 3.  Legal Proceedings.

There  are no  material  pending  legal  proceedings  that  are  required  to be
disclosed.


Item 4.  Submission of Matters to a Vote of Security Holders.

No matters were  submitted to a vote of the  Company's  Stockholders  during the
fourth quarter of fiscal 2000.








                                     PART II

Items 5, 6, 7 and 8.

The  information  called for by Items 5 through 8 of Part II is  presented  in a
separate  section  of this  Annual  Report on Form 10-K  commencing  on the page
numbers specified below:

Form 10-K Item                                                              Page

Item 5 - Market for the Registrant's Common Equity and Related Matters      F-59

Item 6 - Selected Financial Data                                            F-60

Item 7- Management's Discussion and Analysis of Financial Condition
        and Results of Operations                                           F- 2

Item 8 - Financial Statements and Supplementary Data                        F-18



Item  9.  Changes  in and  Disagreements  with  Accountants  on  Accounting  and
Financial Disclosure.


None.







                                    PART III


Items 10, 11, 12 and 13.

The information called for by Part III (Items 10, 11, 12 and 13) is incorporated
herein by reference from the material  included  under the captions  "Nominees,"
"Board   Committees,   Meetings,   and  Compensation,"   "Executive   Officers,"
"Performance  Graph," "Summary  Compensation  Table," "Option/SAR Grants in Last
Fiscal Year," "Aggregated  Option/SAR Exercises in Last Fiscal Year and Year-End
Option/SAR  Values," "Audit Committee  Report,"  "Compensation  and Stock Option
Committee  Report,"  "Security   Ownership  of  Certain  Beneficial  Owners  and
Management,"  "Agreements  Among  Stockholders,"  "Compensation and Stock Option
Committee  Interlocks and Insider  Participation"  and "Section 16(a) Beneficial
Ownership Reporting  Compliance" in the Company's definitive proxy statement (to
be filed) for its Annual  Meeting of  Stockholders  to be held May 22, 2001 (the
"Proxy Statement"). The Proxy Statement is being prepared and will be filed with
the Securities and Exchange Commission pursuant to Regulation 14A, and furnished
to the Company's Stockholders, on or about April 23, 2001.








                                     PART IV

Item 14.  Exhibits, Financial Statement Schedules, and Reports on Form 8-K.


(1)      1.  Financial Statements.

The  following   consolidated  financial  statements  of  the  Company  and  its
subsidiaries  are included in a separate  section of this Annual  Report on Form
10-K commencing on the page numbers specified below:


INDEX........................................................................F-1

Management's Discussion and Analysis of Financial Condition
          and Results of Operations..........................................F-2

Report of Arthur Andersen LLP, Independent Public Accountants
 to Motient Corporation.....................................................F-18

Report of KPMG LLP, Independent Auditors to XM Satellite
 Radio Holdings Inc.........................................................F-19

Consolidated Statements of Operations of Motient ...........................F-20

Consolidated Balance Sheets of Motient .....................................F-21

Consolidated Statements of Stockholders' Equity (Deficit) of Motient .......F-23

Consolidated Statements of Cash Flows of Motient ...........................F-24

Notes to Consolidated Financial Statements of Motient ......................F-25

Quarterly Financial Data of Motient  .......................................F-59

Selected Financial Data of Motient .........................................F-60








         2.  Financial Statement Schedules.

Financial  Statement  Schedules not included with the one listed below have been
omitted because they are not required or not applicable, or because the required
information is shown in the financial statements or notes thereto.

1.       Condensed Financial
              Information of Registrant.................................Page S-1

2.      Schedule II - Valuation and Qualifying Accounts................Page S-16

3.      Exhibits

        3.1  - Restated Certificate of Incorporation of the Company (as restated
               effective May 23, 2000) (Incorporated by reference to Exhibit 3.1
               to the  Company's  Registration  Statement  on Form S-3 (File No.
               333-42104)

        3.2  - Amended  and  Restated  Bylaws of the  Company  (as  amended  and
               restated  effective  May 23,  2000)(incorporated  by reference to
               Exhibit 3.2 to the Company's  Registration  Statement on Form S-3
               (File No. 333-42104))

        9.1  - Amended and Restated Stockholders' Agreement dated as of December
               1, 1993,  between the Company and certain  holders of its capital
               stock  (Incorporated by reference to Exhibit 9.1 to the Company's
               Registration Statement on Form S-1 (Reg. No. 33- 70468))

       10.1  - Contract for an MSAT  Spacecraft,  dated December 7, 1990 between
               the Company and Hughes  Aircraft  Company,  amended June 15, 1993
               (Amendment  Nos. 1 through 4) and further  amended  November  11,
               1993 (Amendment No. 5), Motient Services Inc., as assignee of the
               Company,  and Hughes Aircraft Company  (Incorporated by reference
               to Exhibit 10.3 to the Company's  Registration  Statement on Form
               S-1 (Reg. No. 33-70468))

       10.1a   -    Amendment  No.  6 to the  MSAT  Spacecraft  Contract,  dated
                    October 11, 1994, between Motient Services Inc., as assignee
                    to the Company, and Hughes Aircraft Company (Incorporated by
                    reference to Exhibit 10.3a to the Company's Annual Report on
                    Form 10-K for the fiscal year ended  December 31, 1994 (File
                    No. 0-23044))

       10.1b   -    Mutual  Final  Release,  dated  October  11,  1994,  between
                    Motient  Services  Inc.,  Hughes  Aircraft,  Spar  Aerospace
                    Limited  and  Lockheed   Missiles  &  Space  Company,   Inc.
                    (Incorporated by reference to Exhibit 10.3b to the Company's
                    Annual  Report  on Form  10-K  for  the  fiscal  year  ended
                    December 31, 1994 (File No. 0-23044))






       10.1c   -    Amendment  No.  7 to the  MSAT  Spacecraft  Contract,  dated
                    October 11, 1994, between Motient Services Inc., as assignee
                    to the Company, and Hughes Aircraft Company (Incorporated by
                    reference to Exhibit 10.3c  previously filed with the Report
                    on Form 10-K for the period  ending  December 31, 1997 (File
                    No. 0-23044)))

       10.2  - Memorandum of Agreement for Satellite  Capacity,  dated  February
               17, 1992,  between Motient Services Inc. and Telesat Mobile Inc.,
               as amended by Amending Agreement dated October 18, 1993 among the
               Company,   Motient  Services  Inc.  and  TMI  Communications  and
               Company, Limited Partnership, as successor in interest to Telesat
               Mobile Inc.,  and as further  amended by letter  agreement  dated
               October 18, 1993  (Incorporated  by  reference to Exhibit 10.7 to
               the  Company's  Registration  Statement  on Form  S-1  (Reg.  No.
               33-70468))

       10.3  - Agreement for  Cooperation  in Joint  Procurement of MSS Systems,
               dated  September  19, 1988,  between  American  Mobile  Satellite
               Consortium  Inc.  and  Telesat  Mobile  Inc.   (Incorporated   by
               reference  to  Exhibit  10.32  to  the   Company's   Registration
               Statement on Form S-1 (Reg. No. 33-70468))

       10.4  - Joint  Operating  Agreement,  dated April 25,  1990,  between the
               Company and Telesat Mobile Inc. as amended by Amending  Agreement
               dated October 18, 1993 among the Company,  Motient  Services Inc.
               and TMI  Communications  and  Company,  Limited  Partnership,  as
               successor  in interest to Telesat  Mobile Inc.  (Incorporated  by
               reference  to  Exhibit  10.33  to  the   Company's   Registration
               Statement on Form S-1 (Reg. No. 33-70468))

       10.5  - Right of First  Offer  Agreement  dated as of  November  30, 1993
               among the  Company,  Hughes  Communications  Satellite  Services,
               Inc., Singapore Telecommunications Ltd., Satellite Communications
               Investments Corporation,  Space Technologies  Investments,  Inc.,
               Satellite Mobile Telephone Company L.P., Transit  Communications,
               Inc., MTel Space  Technologies,  L.P. and MTel Space Technologies
               Corporation  (Incorporated  by reference to Exhibit  10.11 to the
               Company's Registration Statement on Form S-1 (Reg. No. 33-70468))

       10.5a   -    Amendment No. 1 dated June 28, 1996, to Right of First Offer
                    Agreement among the Company, Hughes Communications Satellite
                    Services, Inc., Singapore Telecommunications Ltd., Satellite
                    Communications  Investments Corporation,  Space Technologies
                    Investments,   Inc.,   and  Transit   Communications,   Inc.
                    (Incorporated  by reference to Exhibit XI to the Amended and
                    Restated  Schedule  13D dated July 1, 1996,  filed by Hughes
                    Communications     Satellite    Services,    Inc.,    Hughes
                    Communications,   Inc.,  Hughes  Aircraft  Company,   Hughes
                    Electronics  Corporation and General Motors Corporation with
                    respect to shares of Common  Stock,  $.01 par value,  of the
                    Company)

       10.6* - Motient  Corporation  Stock Award Plan (as  amended and  restated
               effective May 23, 2000) (Incorporated by reference to Exhibit 4.2
               to the  Company's  Registration  Statement on Form S-8 (Reg.  No.
               333-40566)

       10.6a*  -    Form of Nonstatutory  Stock Option Agreement under the Stock
                    Award Plan  (Incorporated  by reference to Exhibit  10.6a to
                    the Company's  Annual Report on Form 10-K for the year ended
                    December 31, 1999)

       10.7* - Employee   Stock   Purchase   Plan,   as  amended  May  23,  2000
               (Incorporated  by  reference  to  Exhibit  4.3 to  the  Company's
               Registration Statement on Form S-8 (Reg. No. 333-40566)

       10.8* - Form  of  Directors   and  Officers   Indemnification   Agreement
               (Incorporated  by  reference  to Exhibit  10.41 to the  Company's
               Annual Report on Form 10-K for the fiscal year ended December 31,
               1993 (File No. 0-23044))

       10.9* - 1994 Stock Option Plan for Non-Employee  Directors  (Incorporated
               by reference to Exhibit 10.53 to the  Company's  Annual Report on
               Form 10-K filed for the period ended  December 31, 1996 (File No.
               0-23044))

       10.10*- Form  of  Executive  Agreements  (Incorporated  by  reference  to
               Exhibit 10.54 to the  Company's  Annual Report on Form 10-K filed
               for the period ending December 31, 1996 (File No. 0-23044))

       10.11*- Form of Restricted Stock Agreement  (Incorporated by reference to
               Exhibit  10.13b to the  Company's  Annual Report on Form 10-K for
               the fiscal year ended December 31, 1997 (File No. 0-23044))

       10.12 - Mobile  Terminal  Production  Agreement,  dated  October 6, 1992,
               between   Motient   Services  Inc.  and   Westinghouse   Electric
               Corporation  acting  through   Westinghouse   Electronic  Systems
               Company  (Incorporated  by  reference  to  Exhibit  10.17  to the
               Company's Registration Statement on Form S-1 (Reg. No. 33-70468))

       10.12a  -    Amendment  No. 1 to Mobile  Terminal  Production  Agreement,
                    dated November 21, 1994,  between Motient  Services Inc. and
                    Westinghouse    Electric    Corporation    acting    through
                    Westinghouse  Electronic  Systems Company  (Incorporated  by
                    reference to Exhibit  10.17a to the Company's  Annual Report
                    on Form 10-K for the fiscal  year ended  December  31,  1994
                    (File No. 0-23044))

       10.12b  -    Amendment  No. 2 to Mobile  Terminal  Production  Agreement,
                    dated January 23, 1995,  between  Motient  Services Inc. and
                    Westinghouse    Electric    Corporation    acting    through
                    Westinghouse  Electronic  Systems Company  (Incorporated  by
                    reference to Exhibit  10.17b to the Company's  Annual Report
                    on Form 10-K for the fiscal  year ended  December  31,  1994
                    (File No. 0-23044))






       10.12c  -    Amendment  No. 3 to Mobile  Terminal  Production  Agreement,
                    dated March 21,  1995,  between  Motient  Services  Inc. and
                    Westinghouse    Electric    Corporation    acting    through
                    Westinghouse  Electronic  Systems Company  (Incorporated  by
                    reference to Exhibit  10.17c the Company's  Annual Report on
                    Form 10-K for the fiscal year ended  December 31, 1994 (File
                    No. 0-23044))

       10.13 - Mobile Termination Production Contract,  dated November 30, 1992,
               between Motient Services Inc. and Mitsubishi Electric Corporation
               (Incorporated  by  reference  to Exhibit  10.18 to the  Company's
               Registration Statement on Form S-1 (Reg. No. 33-70468))

       10.14 - Deed of Lease at Reston,  Virginia,  dated  February  4, 1993 and
               amended June 21, 1993,  between  Motient  Services Inc. and Trust
               Company  of the West as Trustee  (Incorporated  by  reference  to
               Exhibit 10.20 to the Company's Registration Statement on Form S-1
               (Reg. No. 33-70468))

       10.14a  -    Amendment  No. 4 to Deed of Lease,  dated  October  7, 1994,
                    between Motient  Services Inc. and Trust Company of the West
                    as Trustee  (Incorporated  by reference to Exhibit 10.20a to
                    the Company's Annual Report on Form 10-K for the fiscal year
                    ended December 31, 1994 (File No. 0-23044))

       10.15 - Master  Lease  Agreement,  dated June 23, 1993,  between  Motient
               Services Inc. and Digital Equipment  Corporation and Amendment to
               Master Lease Agreement  between Motient Services Inc. and Digital
               Equipment  Corporation  dated  August  2, 1993  (Incorporated  by
               reference  to  Exhibit  10.25  to  the   Company's   Registration
               Statement on Form S-1 (Reg. No. 33-70468))

       10.16 - Telemetry,  Tracking  and Control  Satellite  Service  Agreement,
               dated as of August 5, 1993,  between  Motient  Services  Inc. and
               Hughes Communications  Satellite Services,  Inc. (Incorporated by
               reference  to  Exhibit  10.27  to  the   Company's   Registration
               Statement on Form S-1 (Reg. No. 33-70468))

       10.17 - Agreement dated as of December 14, 1992 between Motient  Services
               Inc. and GTE Spacenet  Corporation  (Incorporated by reference to
               Exhibit 10.35 to the Company's Registration Statement on Form S-1
               (Reg. No. 33-70468))

       10.17a  -    Amendment  No.  1  dated  as of  November  7,  1997  to  the
                    Agreement  dated as of December  14,  1992,  by GTE Spacenet
                    Corporation  and  Motient  Services  Inc.  (Incorporated  by
                    reference to Exhibit 10.65  previously filed with the Report
                    on Form 10-K for the period  ending  December 31, 1997 (File
                    No. 0-23044))






       10.18 - Master  Agreement  dated  March  30,  1994,   between  Washington
               International  Teleport,  Inc., and the Company  (Incorporated by
               reference to Exhibit  10.36a to the  Company's  Annual  Report on
               Form 10-K for the fiscal year ended  December  31, 1993 (File No.
               0-23044))

       10.18a  -    Contract  Amendment  No. A001,  dated July 1, 1994,  between
                    Washington  International  Teleport,  Inc.,  and the Company
                    (Incorporated   by  reference  to  Exhibit   10.36b  to  the
                    Company's Quarterly Report on Form 10-Q filed for the period
                    ending September 30, 1994 (File No. 0-23044))

       10.18b  -    Contract  Amendment  No. A002,  dated July 1, 1994,  between
                    Washington  International  Teleport,  Inc.,  and the Company
                    (Incorporated   by  reference  to  Exhibit   10.36c  to  the
                    Company's Quarterly Report on Form 10-Q filed for the period
                    ending September 30, 1994 (File No. 0-23044))

       10.19 - Asset Sale Agreement  dated as of November 22, 1996, by and among
               Rockwell  Collins,  Inc.,  the Company and Motient  Services Inc.
               (Incorporated  by  reference  to Exhibit  10.61 to the  Company's
               Current  Report on Form 8-K dated November 22, 1996, and filed on
               December 9, 1996 (File No. 0-23044))

       10.20 - Stock  Purchase  Agreement for the  Acquisition of Motorola ARDIS
               Acquisition,  Inc. and Motorola ARDIS,  Inc. by Motient  Holdings
               Inc.,  a  Wholly-Owned  Subsidiary  of the  Company,  dated as of
               December 31, 1997  (Incorporated  by  reference to Exhibit  10.65
               previously  filed with the Company's  Report on Form 10-K for the
               period ending December 31, 1997 (File No. 0-23044)).

       10.20a  -    Amendment  No. 1 dated March 31, 1998 to the Stock  Purchase
                    Agreement for the Acquisition of Motorola ARDIS Acquisition,
                    Inc. and Motorola  ARDIS,  Inc. by Motient  Holdings Inc., a
                    Wholly-Owned  Subsidiary  of the  Company  (Incorporated  by
                    reference to Exhibit 4.2 to the Schedule 13D dated March 31,
                    1998, filed by Motorola, Inc.).

       10.21 - Participation  Rights Agreement by and among Motorola,  Inc., the
               Company,  and the  parties  listed  on  Schedule  A,  dated as of
               December 31, 1997  (Incorporated  by  reference to Exhibit  10.65
               previously  filed  with the  Report on Form  10-K for the  period
               ending December 31, 1997 (File No. 0-23044)).

       10.21a  -    Registration  Rights  Agreement by and among Motorola,  Inc.
                    and the Company dated as of March 31, 1998  (Incorporated by
                    reference to Exhibit 4.4 to the Schedule 13D dated March 31,
                    1998, filed by Motorola, Inc.)






       10.22 - Credit  Agreement by and between  Motorola Inc. and ARDIS Company
               dated June 17, 1998  (Incorporated  by reference to Exhibit 10.61
               to the Company's  Current Report on Form 10-Q dated June 30, 1998
               (File No. 0-23044)).

       10.22a  -    Amendment  No. 2, dated  September  1,  2000,  to the Credit
                    Agreement,  dated  as of  June  17,  1998,  by  and  between
                    Motorola,  Inc. and Motient Communications Company (formerly
                    known  as  ARDIS  Company)  (Incorporated  by  reference  to
                    Exhibit  10.22a to the  Company's  Quarterly  Report on Form
                    10-Q for the  quarter  ended  September  30,  2000 (File No.
                    0-23044)).

       10.22b  -    Assumption,  Release,  Amendment and Waiver Agreement by and
                    among  Motorola,   Inc.,  Motient  Communications  Inc.  and
                    Motient  Communications  Company,  dated as of December  29,
                    2000 (filed herewith).

       10.23 - Indenture  of Motient  Holdings  Inc.,  Series A and Series B, 12
               1/4% Senior Notes Due 2008, dated March 31, 1998 (Incorporated by
               reference to Registration  Statement on Form S-4 filed on May 15,
               1998 (File No. 333-52777)).

       10.24 - Debt  Registration  Rights  Agreement dated March 31, 1998 by and
               among  Motient  Holdings  Inc.,  Bear,  Stearns & Co. Inc.,  J.P.
               Morgan  Securities Inc., TD Securities (USA) Inc. and BancAmerica
               Robertson Stephens, and guarantors party thereto (Incorporated by
               reference to Registration  Statement on Form S-4 filed on May 15,
               1998 (File No. 333-52777)).

       10.25 - Unit Agreement Among Motient  Corporation,  Motient Holdings Inc.
               and State  Street  Bank and Trust  Company as Unit  Agent,  dated
               March  31,  1998   (Incorporated  by  reference  to  Registration
               Statement   on  Form  S-4  filed  on  May  15,   1998  (File  No.
               333-52777)).

       10.26 - Warrant Agreement between Motient Corporation as Issuer and State
               Street  Bank and Trust  Company as Warrant  Agent dated March 31,
               1998 (Incorporated by reference to Registration Statement on Form
               S-4 filed on May 15, 1998 (File No. 333-52777)).

       10.27 - Warrant Registration Rights Agreement dated March 31, 1998 By and
               Among  Motient  Corporation  and Bear,  Stearns & Co. Inc.,  J.P.
               Morgan Securities Inc., T.D.  Securities (USA) Inc.,  BancAmerica
               Robertson  Stephens  (Incorporated  by reference to  Registration
               Statement   on  Form  S-4  filed  on  May  15,   1998  (File  No.
               333-52777)).

       10.28 - Pledge and Security Agreement by and among Motient Holdings Inc.,
               State Street Bank and Trust Company,  as Trustee and State Street
               Bank and Trust Company,  as Collateral Agent dated March 31, 1998
               (Incorporated by reference to Registration  Statement on Form S-4
               filed on May 15, 1998 (File No. 333-52777)).

       10.29 - Guaranty  Issuance  Agreement,  dated as of March 31, 1998, among
               Hughes  Electronics  Corporation,   Singapore  Telecommunications
               Ltd.,  and Baron  Capital  Partners,  L.P.  and the  Company  and
               Motient Holdings Inc.  (Incorporated by reference to Exhibit 1 to
               the  Schedule   13D  dated  March  31,  1998,   filed  by  Hughes
               Communications Satellite Services, Inc.)






       10.29a  -    Amendment No. 1 to the Guaranty Issuance Agreement, dated as
                    of January 15, 1999, among Hughes  Electronics  Corporation,
                    Singapore   Telecommunications   Ltd.,   and  Baron  Capital
                    Partners,  L.P.  and the Company and Motient  Holdings  Inc.
                    (Incorporated   by  reference  to  Exhibit   10.29a  to  the
                    Company's  Annual  Report  on Form  10-K for the year  ended
                    December 31, 1998 (File No. 0-23044))

       10.29b  -    Amendment No. 2 to the Guaranty Issuance Agreement, dated as
                    of March 29,  1999,  among Hughes  Electronics  Corporation,
                    Singapore   Telecommunications   Ltd.,   and  Baron  Capital
                    Partners,  L.P.  and the Company and Motient  Holdings  Inc.
                    (incorporated   by  reference  to  Exhibit   10.29b  to  the
                    Company's  Annual  Report  on Form  10-K for the year  ended
                    December 31, 1998 (File No. 0-23044))

       10.30 - Warrant No. 1 for the  Purchase of 3,750,000  Shares  (subject to
               adjustment)  of  Common  Stock of the  Company  issued  to Hughes
               Electronics  Corporation,  dated June 28, 1996  (Incorporated  by
               reference to Exhibit  XIII to the Amended and  Restated  Schedule
               13D dated July 1, 1996, filed by Hughes Communications  Satellite
               Services,  Inc.,  Hughes  Communications,  Inc.,  Hughes Aircraft
               Company,   Hughes  Electronics  Corporation  and  General  Motors
               Corporation  with  respect  to shares of Common  Stock,  $.01 par
               value, of the Company).

       10.30a  -    Amendment  No.  1 to the  Warrant  Certificate,  dated as of
                    March  27,  1997,  by  and  among  the  Company  and  Hughes
                    Electronics Corporation,  Singapore Telecommunications Ltd.,
                    and Baron Capital Partners,  L.P. (Incorporated by reference
                    to Exhibit 4 to the Schedule 13D dated March 31, 1997, filed
                    by Hughes Communications Satellite Services, Inc.)

       10.30b  -    Amendment  No.  2 to the  Warrant  Certificate,  dated as of
                    March  31,  1998,  by  and  among  the  Company  and  Hughes
                    Electronics Corporation,  Singapore Telecommunications Ltd.,
                    and Baron Capital Partners,  L.P. (Incorporated by reference
                    to Exhibit 4 to the Schedule 13D dated March 31, 1998, filed
                    by Hughes Communications Satellite Services, Inc.)

       10.30c  -    Amendment No. 3 to the Warrant Certificates for the Purchase
                    of Shares of Common Stock of the Company,  dated as of April
                    1, 1999,  by and among the  Company  and Hughes  Electronics
                    Corporation,  Singapore  Telecommunications  Ltd., and Baron
                    Capital Partners, L.P. (incorporated by reference to Exhibit
                    10.29b to the  Company's  Annual Report on Form 10-K for the
                    year ended December 31, 1998 (File No. 0-23044))

       10.30d  -    Amendment No. 4 to Warrant  Certificates for the purchase of
                    shares of common  stock of Motient  Corporation  dated as of
                    June  29,  2000   issued  to  each  of  Hughes   Electronics
                    Corporation and Baron Capital Partners,  L.P.  (Incorporated
                    by reference to Exhibit  10.30d to the  Company's  Quarterly
                    Report  on Form 10-Q for the  quarter  ended  June 30,  2000
                    (File No. 0-23044)).






       10.31 - Registration  Rights  Agreement dated as of June 28, 1996,  among
               the   Company,   Hughes   Electronics   Corporation,    Singapore
               Telecommunications   Ltd.,  and  Baron  Capital  Partners,   L.P.
               (Incorporated  by  reference  to Exhibit  XIV to the  Amended and
               Restated  Schedule  13D  dated  July 1,  1996,  filed  by  Hughes
               Communications  Satellite Services,  Inc., Hughes Communications,
               Inc., Hughes Aircraft Company, Hughes Electronics Corporation and
               General  Motors  Corporation  with  respect  to  shares of Common
               Stock,  $.01  par  value,  of  the  Company).   (Incorporated  by
               reference to Exhibit 10.57 to the Company's  Quarterly  Report on
               Form 10-Q  filed for the  period  ended  June 30,  1996 (File No.
               0-23044))

       10.32 - Warrant  for the  Purchase  of  Shares  of  Common  Stock  of the
               Company, dated as of March 31, 1998 (Incorporated by reference to
               Exhibit 2 to the  Schedule  13D dated  March 31,  1998,  filed by
               Hughes Communications Satellite Services, Inc.)

       10.32a  -    Amendment No. 1 to Warrant  Certificates for the Purchase of
                    Shares of Common Stock of the Company,  dated as of April 1,
                    1999 by and among Hughes Electronics Corporation,  Singapore
                    Telecommunications  Ltd. and Baron  Capital  Partners,  L.P.
                    (incorporated   by  reference  to  Exhibit   10.29b  to  the
                    Company's  Annual  Report  on Form  10-K for the year  ended
                    December 31, 1998 (File No. 0-23044))

       10.32b  -    Amendment No. 2 to Warrant  Certificates for the purchase of
                    common  stock of  Motient  Corporation  dated as of June 29,
                    2000 issued to each of Hughes  Electronics  Corporation  and
                    Baron Capital Partners,  L.P.  (Incorporated by reference to
                    Exhibit  10.32b to the  Company's  Quarterly  Report on Form
                    10-Q  for  the  quarter   ended  June  30,  2000  (File  No.
                    0-23044)).

       10.33 - Amended and Restated  Registration Rights Agreement,  dated as of
               March  31,  1998,  among  the  Company  and  Hughes   Electronics
               Corporation, Singapore Telecommunications Ltd., and Baron Capital
               Partners,  L.P.  (Incorporated  by  reference to Exhibit 3 to the
               Schedule 13D dated March 31, 1998, filed by Hughes Communications
               Satellite Services, Inc.)

       10.33a  -    Amendment  No. 1, dated as of May 10,  1999,  to Amended and
                    Restated  Registration  Rights  Agreement among the Company,
                    Hughes Electronics,  Singapore  Telecommunications Ltd., and
                    Baron Capital Partners,  L.P.  (incorporated by reference to
                    Exhibit  10.33a to the  Company's  Quarterly  Report on Form
                    10-Q  for  the  quarter  ended  March  31,  1999  (File  No.
                    0-23044))

       10.34 - Term  Credit  Agreement  dated as of March  31,  1998  among  the
               Company,  Morgan  Guaranty  Trust  Company  of New York,  Toronto
               Dominion   (Texas),   Inc.   and  other   banks   party   thereto
               (Incorporated  by  reference  to Exhibit  10.61 to the  Company's
               Current  Report  on Form 10-Q  dated  March  31,  1998  (File No.
               0-23044))

       10.34a  -    Amendment No. 1 and Waiver to Term Credit Agreement dated as
                    of January 15, 1999 among the Company, Morgan Guaranty Trust
                    Company of New York,  Toronto  Dominion  (Texas),  Inc.  and
                    other banks party  thereto  (incorporated  by  reference  to
                    Exhibit  10.34a to the Company's  Annual Report on Form 10-K
                    for the year ended December 31, 1998 (File No. 0-23044))






       10.34b  -    Waiver,  dated as of May 21,  1999,  under  the Term  Credit
                    Agreement  (incorporated  by reference to Exhibit  10.34b to
                    the Company's  Annual Report on Form 10-K for the year ended
                    December 31, 1999 (File No. 0-23044))

       10.34c  -    Amendment  No. 2 and  Waiver of Term  Credit  Agreement  and
                    Amendment No. 1 of Term Loan Security and Pledge  Agreement,
                    dated as of November  15,  1999,  by and among the  Company,
                    Morgan Guaranty Trust Company of New York,  Toronto Dominion
                    (Texas),   Inc.   and  the   other   banks   party   thereto
                    (incorporated   by  reference  to  Exhibit   10.34c  to  the
                    Company's  Annual  Report  on Form  10-K for the year  ended
                    December 31, 1999 (File No. 0-23044))

       10.34d  -    Waiver,  dated as of June 27,  2000,  under the Term  Credit
                    Agreement  among the Company,  Morgan Guaranty Trust Company
                    of New York and Toronto Dominion (Texas), Inc. and the other
                    banks party  thereto  (Incorporated  by reference to Exhibit
                    10.34d to the  Company's  Quarterly  Report on Form 10-Q for
                    the quarter ended June 30, 2000 (File No. 0-23044)).

       10.34e  -    Waiver  dated as of October  18,  2000 under the Term Credit
                    Agreement  dated March 31, 1998 among  Motient  Corporation,
                    Morgan  Guaranty  Trust  Company  of New  York  and  Toronto
                    Dominion (Texas),  Inc. and other banks party thereto (filed
                    herewith)

       10.34f  -    Waiver  dated as of October  20,  2000 under the Term Credit
                    Agreement  dated March 31, 1998 among  Motient  Corporation,
                    Morgan  Guaranty  Trust  Company  of New  York  and  Toronto
                    Dominion (Texas),  Inc. and other banks party thereto (filed
                    herewith)

       10.34g  -    Waiver  dated as of  December  1, 2000 under the Term Credit
                    Agreement  dated March 31, 1998 among  Motient  Corporation,
                    Morgan  Guaranty  Trust  Company  of New  York  and  Toronto
                    Dominion (Texas),  Inc. and other banks party thereto (filed
                    herewith)

       10.34h  -    Waiver  dated as of  February  9, 2001 under the Term Credit
                    Agreement  dated March 31, 1998 among  Motient  Corporation,
                    Morgan  Guaranty  Trust  Company  of New  York  and  Toronto
                    Dominion (Texas),  Inc. and other banks party thereto (filed
                    herewith)

       10.35 - Revolving  Credit  Agreement  dated as of March  31,  1998  among
               Motient Holdings Inc., the Company, Morgan Guaranty Trust Company
               of New York and Toronto  Dominion  (Texas),  Inc. and other banks
               party thereto  (Incorporated by reference to Exhibit 10.61 to the
               Company's  Current Report on Form 10-Q dated March 31, 1998 (File
               No. 0-23044))

       10.35a  -    Amendment  No. 1 and Waiver to  Revolving  Credit  Agreement
                    dated as of January 15, 1999 among  Motient  Holdings  Inc.,
                    the Company,  Morgan  Guaranty Trust Company of New York and
                    Toronto Dominion (Texas), Inc. and other banks party thereto
                    (incorporated   by  reference  to  Exhibit   10.35a  to  the
                    Company's  Annual  Report  on Form  10-K for the year  ended
                    December 31, 1998 (File No. 0-23044))


       10.35b  -    Amendment No. 2 and Waiver of Revolving Credit Agreement and
                    Amendment  No.  1 of  Subsidiary  Guaranties,  dated  as  of
                    November 15, 1999, by and among Motient  Holdings  Inc., the
                    Company,  Morgan Guaranty Trust Company of New York, Toronto
                    Dominion  (Texas),  Inc. and the other banks party  thereto,
                    and the Subsidiary Guarantors party thereto (incorporated by
                    reference to Exhibit  10.35b to the Company's  Annual Report
                    on Form 10-K for the year ended December 31, 1999)

       10.35c  -    Waiver,  dated  as of June 27,  2000,  under  the  Revolving
                    Credit  Agreement among the Company,  Motient Holdings Inc.,
                    Morgan  Guaranty  Trust  Company  of New York,  and  Toronto
                    Dominion  (Texas),  Inc.  and the other banks party  thereto
                    (Incorporated   by  reference  to  Exhibit   10.35c  to  the
                    Company's  Quarterly  Report  on Form  10-Q for the  quarter
                    ended June 30, 2000 (File No. 0-23044)).

       10.35d  -    Waiver  dated as of October  18,  2000  under the  Revolving
                    Credit Agreement dated March 31, 1998 among Motient Holdings
                    Inc., Motient Corporation,  Morgan Guaranty Trust Company of
                    New York and Toronto Dominion (Texas),  Inc. and other banks
                    party thereto (filed herewith)

       10.35e  -    Waiver  dated as of October  20,  2000  under the  Revolving
                    Credit Agreement dated March 31, 1998 among Motient Holdings
                    Inc., Motient Corporation,  Morgan Guaranty Trust Company of
                    New York and Toronto Dominion (Texas),  Inc. and other banks
                    party thereto (filed herewith)

       10.35f  -    Waiver  dated as of  December  1, 2000  under the  Revolving
                    Credit Agreement dated March 31, 1998 among Motient Holdings
                    Inc., Motient Corporation,  Morgan Guaranty Trust Company of
                    New York and Toronto Dominion (Texas),  Inc. and other banks
                    party thereto (filed herewith)

       10.35g  -    Waiver  dated as of  February  9, 2001  under the  Revolving
                    Credit Agreement dated March 31, 1998 among Motient Holdings
                    Inc., Motient Corporation,  Morgan Guaranty Trust Company of
                    New York and Toronto Dominion (Texas),  Inc. and other banks
                    party thereto (filed herewith)

       10.36*- 1999 Stock Option Plan for Non-Employee  Directors  (Incorporated
               by  reference  to  Exhibit  4.4  to  the  Company's  Registration
               Statement on Form S-8 (File No. 333-88807)

       10.37 - Exchange Agreement, dated June 7, 1999, by and among the Company,
               WorldSpace,  Inc., XM Satellite  Radio Holdings Inc., and Noah A.
               Samara,  as trustee of XM Ventures  (Incorporated by reference to
               Exhibit  2.1 to the  Company's  Report on Form 8-K dated  July 9,
               1999 (File No. 0-23044))






       10.38 - Registration  Rights Agreement,  dated July 7, 1999, by and among
               XM Satellite Radio Holdings Inc. ("XM Radio"), the Company, Baron
               Asset Fund series  ("Baron"),  Clear  Channel  Investments,  Inc.
               ("Clear Channel"),  Columbia XM Radio Partners, LLC ("Columbia"),
               DIRECTV Enterprises, Inc. ("DIRECTV"), General Motors Corporation
               ("GM"),  Madison Dearborn  Capital  Partners III, L.P.  ("Madison
               Capital"),  Madison Dearborn  Special Equity III, L.P.  ("Madison
               Equity"),  Special Advisors Fund I, LLC ("Madison Advisors," and,
               collectively with Madison Capital and Madison Equity, "Madison"),
               and  Telcom-XM  Investors,  L.L.C.  ("Telcom")  (Incorporated  by
               reference  to Exhibit  99.2 to the  Company's  Report on Form 8-K
               dated July 9, 1999 (File No. 0-23044))

       10.39 - Shareholders  Agreement,  dated  July 7,  1999,  by and  among XM
               Radio, the Company, Baron, Clear Channel, Columbia,  DIRECTV, GM,
               Madison Equity,  Madison Capital,  Madison  Advisors,  and Telcom
               (Incorporated  by  reference  to  Exhibit  99.1 to the  Company's
               Report on Form 8-K dated July 9, 1999 (File No. 0-23044))

       10.39a  -    Amended and Restated  Shareholders'  Agreement,  dated as of
                    August 8, 2000,  by and among XM  Satellite  Radio  Holdings
                    Inc.,  the  Company,  Baron Asset Fund,  Baron  iOpportunity
                    Fund, Baron Capital Asset Fund,  Clear Channel  Investments,
                    Inc.,  Columbia XM Radio  Partners,  LLC,  Columbia  Capital
                    Equity Partners III (QP), L.P., DIRECTV  Enterprises,  Inc.,
                    Columbia XM Satellite  Partners  III,  LLC,  General  Motors
                    Corporation,  Madison  Dearborn  Capital Partners III, L.P.,
                    Special  Advisors  Fund I,  LLC,  Madison  Dearborn  Special
                    Equity  III,  L.P.,  American  Honda  Motor Co.,  Inc.,  and
                    Telcom-XM  Investors,  L.L.C.  (Incorporated by reference to
                    Exhibit 10.1 to Amendment  No. 1 to XM Radio's  Registration
                    Statement on Form S-1 (File No. 333-39176)).

       10.40 - Note Purchase  Agreement,  dated as of June 7, 1999, by and among
               XM Radio  and  each of  Clear  Channel,  GM,  Columbia,  DIRECTV,
               Madison Capital, Madison Advisors, and Madison Equity, and Telcom
               (Incorporated  by  reference  to  Exhibit  99.3 to the  Company's
               Report on Form 8-K dated July 9, 1999 (File No. 0-23044))

       10.41 - Investment  Agreement dated as of June 22, 2000, by and among the
               Company,  Motient  Satellite  Ventures  LLC,  and  certain  other
               investors  (Incorporated  by  reference  to Exhibit  10.41 to the
               Company's  Quarterly  Report on Form 10-Q for the  quarter  ended
               June 30, 2000 (File No. 0-23044)).

       10.42 - Asset Sale Agreement between Motient  Satellite  Ventures LLC and
               Motient Services Inc. dated as of June 29, 2000  (Incorporated by
               reference to Exhibit 10.42 to the Company's  Quarterly  Report on
               Form  10-Q  for  the  quarter  ended  June  30,  2000  (File  No.
               0-23044)).

       10.42a  -    Amendment  No. 1, dated as of November  29,  2000,  to Asset
                    Sale Agreement,  dated as of June 29, 2000,  between Motient
                    Satellite  Ventures  LLC and Motient  Services  Inc.  (filed
                    herewith).

       10.42b  -    Amended  and  Restated  Asset  Sale  Agreement,  dated as of
                    January 8, 2001,  between Mobile Satellite  Ventures LLC and
                    Motient Services Inc. (filed herewith).

       10.43 - Research and Development,  Marketing and Service Agreement, dated
               as of June 29, 2000, by and between  Motient  Satellite  Ventures
               LLC and Motient  Services  Inc.  (Incorporated  by  reference  to
               Exhibit 10.43 to the Company's  Quarterly Report on Form 10-Q for
               the quarter ended June 30, 2000 (File No. 0-23044)).

       10.43a  -    Amendment,  dated as of  January 8, 2001,  to  Research  and
                    Development,   Marketing   and  Service   Agreement   (filed
                    herewith).

       10.44 - First Amended and Restated Limited Liability Company Agreement of
               Motient  Satellite  Ventures  LLC  dated  as  of  June  29,  2000
               (Incorporated  by  reference  to Exhibit  10.44 to the  Company's
               Quarterly Report on Form 10-Q for the quarter ended June 30, 2000
               (File No. 0-23044)).

       10.44a  -    Amendment,  dated  December 19, 2000,  to First  Amended and
                    Restated  Limited  Liability  Company  Agreement  of  Mobile
                    Satellite Ventures LLC (filed herewith).

       10.45 - Registration Rights Agreement,  dated as of June 29, 2000, by and
               among the Company and certain  holders of securities  convertible
               into or exchangeable for Common Stock  (Incorporated by reference
               to Exhibit 10.45 to the Company's  Quarterly  Report on Form 10-Q
               for the quarter ended June 30, 2000 (File No. 0-23044)).

       10.45a  -    Amendment,  dated as of  January 8,  2001,  to  Registration
                    Rights Agreement dated as of June 29, 2000 (filed herewith).

       10.46 - Asset Sale  Agreement,  dated November 29, 2000, by and among the
               Company,  Motient  Services Inc. and Aether Systems,  Inc. (filed
               herewith).

       10.47 - Escrow  Agreement,  dated as of November 29,  2000,  by and among
               Motient  Services Inc.,  Aether Systems,  Inc. and Sun Trust Bank
               (filed herewith).

       10.48 - January 2001 Investment  Agreement,  dated as of January 8, 2001,
               by and among the  Company,  Mobile  Satellite  Ventures  LLC, TMI
               Communications and Company,  Limited  Partnership,  and the other
               investors named therein (filed herewith).

       10.49 - Restoral  Capacity  Letter  Agreement,  dated  January  8,  2001,
               between Motient Services Inc. and TMI Communications and Company,
               Limited Partnership (filed herewith).

       10.50 - Document  Standstill  and  Termination  Agreement,  dated  as  of
               January  8,  2001,  by and among the  Company,  Mobile  Satellite
               Ventures LLC, Motient Services Inc., and certain  investors named
               therein (filed herewith).

       21.1  - Subsidiaries of the Company (filed herewith)

       23.1  - Consent of Arthur Andersen LLP (filed herewith)

       23.2  - Consent of KPMG LLP (filed herewith)

     ------------------------------------

     *Management  contract or  compensatory  plan or arrangement  required to be
     filed as an exhibit to this report pursuant to Item 14(c) of this report.



(2)      Reports on Form 8-K:

         On November 29, 2000,  the Company filed a Current  Report on Form 8-K,
         describing in response to Item 5-Other Events, the previously-announced
         sale of its retail transportation business to Aether Systems, Inc.

         On January 12, 2001,  the Company  filed a Current  Report on Form 8-K,
         describing in response to Item 5-Other Events, that it had entered into
         a definitive agreement,  subject to certain conditions,  to combine its
         satellite  communications  business with that of TMI Communications and
         Company, Limited Partnership.





                                   SIGNATURES

Pursuant to the  requirements of Section 13 or 15(d) of the Securities  Exchange
Act of 1934,  the  registrant  has duly  caused  this report to be signed on its
behalf by the undersigned, thereunto duly authorized.

                                   MOTIENT CORPORATION


                                   By: /s/Walter V. Purnell, Jr.
                                       -----------------------------------------
                                       Walter V. Purnell, Jr.
                                       President and Chief Executive Officer

Date:   April 2, 2001

Pursuant to the requirements of the Securities Exchange Act of 1934, this report
has been signed below by the following  persons on behalf of the  registrant and
in the capacities and on the dates indicated.


/s/Walter V. Purnell, Jr.  President and Chief Executive Officer
- -------------------------  (principal executive officer)           April 2, 2001
Walter V. Purnell, Jr.


/s/W. Bartlett Snell       Senior Vice President and               April 2, 2001
- -------------------------  Chief Financial Officer (principal
W. Bartlett Snell          financial and accounting officer)


/s/Gary M. Parsons         Chairman of the Board                   April 2, 2001
- -------------------------
Gary M. Parsons


/s/Billy J. Parrott        Director                                April 2, 2001
- -------------------------
Billy J. Parrott


/s/Andrew A. Quartner      Director                                April 2, 2001
- -------------------------
Andrew A. Quartner


/s/Jack A. Shaw            Director                                April 2, 2001
- -------------------------
Jack A. Shaw


/s/Jonelle St. John        Director                                April 2, 2001
- -------------------------
Jonelle St. John








Management's Discussion and Analysis of Financial Condition
  and Results of Operations..................................................F-2

Report of Arthur Andersen LLP, Independent Public Accountants
  to Motient Corporation....................................................F-18

Report of KPMG LLP, Independent Auditors to XM Satellite
  Radio Holdings Inc........................................................F-19

Consolidated Statements of Operations of Motient ...........................F-20

Consolidated Balance Sheets of Motient......................................F-21

Consolidated Statements of Stockholders' Equity (Deficit) of Motient .......F-23

Consolidated Statements of Cash Flows of Motient ...........................F-24

Notes to Consolidated Financial Statements of Motient ......................F-25

Quarterly Financial Data of Motient ........................................F-59

Selected Financial Data of Motient .........................................F-60






                Management's Discussion and Analysis of Financial
                      Condition and Results of Operations

This  Annual  Report  on Form 10-K  contains  and  incorporates  forward-looking
statements  within the meaning of Section 27A of the  Securities Act of 1933, as
amended, and Section 21E of the Securities Exchange Act of 1934, as amended. All
statements  regarding our expected financial position and operating results, our
business strategy and our financing plans are forward-looking statements.  These
statements can sometimes be identified by our use of forward-looking  words such
as "may," "will,"  "anticipate,"  "estimate,"  "expect," "project," or "intend."
These  forward-looking  statements  reflect our plans,  expectations and beliefs
and,  accordingly,  are subject to certain  risks and  uncertainties.  We cannot
guarantee that any of such forward-looking statements will be realized.

Factors  that  may  cause  actual  results  to  differ   materially  from  those
contemplated  by  such  forward-looking   statements  ("Cautionary  Statements")
include,   among  others,  those  described  under  the  caption   "Management's
Discussion  and  Analysis of  Financial  Condition  and Results of  Operations -
Overview,"  and elsewhere in this annual report,  including in conjunction  with
the  forward-looking  statements  included  in this  annual  report.  All of our
subsequent written and oral  forward-looking  statements (or statements that may
be attributed to us) are expressly qualified by the Cautionary  Statements.  You
should carefully review the risk factors described in our other filings with the
Securities and Exchange Commission (the "SEC") from time to time,  including our
registration  statement  on Form S-3 (File  No.  333-42104),  and our  quarterly
reports on Form 10-Q to be filed after this annual report,  as well as our other
reports and filings with the SEC. In addition, you are urged to carefully review
the  prospectus   (including   supplements)  included  within  the  registration
statement (File No. 333-47570) of XM Satellite Radio Holdings Inc. ("XM Radio"),
and XM Radio's  current  report on Form 8-K dated  February  21,  2001 (File No.
0-27441),  each filed with the SEC, which describe certain risk factors relating
to XM Radio's  business,  as well as XM Radio's other reports filed from time to
time with the SEC.

Our forward-looking  statements are based on information  available to us today,
and we  will  not  update  these  statements.  Our  actual  results  may  differ
significantly from the results discussed.

General

This section provides  information which we believe is relevant to an assessment
and  understanding  of the  financial  condition  and  consolidated  results  of
operations  of Motient  Corporation  (with its  subsidiaries,  "Motient"  or the
"Company").  The discussion  should be read in conjunction with the consolidated
financial   statements  and  notes  thereto.   Motient  has  four   wholly-owned
subsidiaries  which, for purposes of this annual report,  are referred to as the
core  wireless  business.  As of December 31, 2000,  we also owned a controlling
interest in three other  subsidiaries,  referred to as XM Radio (defined below).
On a consolidated basis, we refer to these entities as Motient.

We also have a less-than 100% interest in Mobile  Satellite  Ventures LLC, which
is not consolidated with Motient.

Core Wireless Business

We are a  nationwide  provider of two-way,  wireless  mobile data  services  and
mobile Internet  services.  Our customers use our network and  applications  for
email  messaging  and  dispatch  and  voice  communications  services,  enabling
businesses,  mobile workers and consumers to transfer electronic information and
messages and access corporate databases and the Internet.

Over the  last  several  years,  we have  made  substantial  investments  in new
products and services,  including our eLink(sm) wireless email service, which we
believe  will  capitalize  on the rapid  expansion  of Internet  email usage and
wireless data, particularly in the business-to-business environment.

Our eLink service is a two-way  wireless email device and  electronic  organizer
that uses our terrestrial  network.  We provide our eLink brand two-way wireless
email service to customers  accessing email through corporate servers,  Internet
Service Providers  ("ISP"),  Mail Service Provider ("MSP") accounts,  and paging
network  suppliers.  Also, in July 2000 we entered into an agreement with Yahoo!
Inc., a leading global Internet  communications,  commerce and media company, to
use our eLink service to provide Yahoo! users wireless access to Yahoo!  content
and services.  In November 2000, we launched our eLink Fortified with Yahoo!(tm)
service, as well as our BlackBerry(tm) by Motient solution specifically designed
for large  corporate  accounts  operating in a Microsoft  Exchange  environment.
BlackBerry(tm)  is a popular  wireless email  solution  developed by Research in
Motion ("RIM") and is being  provided on the Motient  network under license from
RIM.

                                      F-2


We  expect  that our  rollout  of eLink,  BlackBerry(tm)  by  Motient  and eLink
Fortified  with  Yahoo!(tm)  will require a significant  investment of financial
resources.  We believe that the market opportunity represented by these wireless
data offerings is substantial,  and we have decided to focus the majority of our
available and future  resources on expanding our wireless  data  business.  As a
result of these factors, and in light of our  previously-announced  transactions
involving  Mobile  Satellite  Ventures  LLC, we expect that the future  level of
investment  in our voice  business  and  satellite-related  product  lines  will
decrease as a percentage  of our overall  investment.  While we expect that this
shift in resources  will  ultimately  yield an increase in our customer base, we
expect that it will have the effect of driving down average  revenue per unit as
the percentage of voice customers decreases.

Sale of Retail Transportation Business

In an effort to focus our business on providing wireless data services,  we sold
our retail  transportation assets to Aether Systems, Inc. ("Aether") on November
29, 2000.  Aether  purchased the assets  comprising our wireless  communications
business  for  the  transportation  market,  including  the  satellite-only  and
MobileMAX2(tm)  multi-mode mobile messaging business. Aether acquired all of the
assets  used or useful in the retail  transportation  business,  and assumed the
related  liabilities.  Aether  also  purchased  the  existing  inventory  in the
business, and was granted a perpetual license to use and modify any intellectual
property owned by or licensed to us in connection with the retail transportation
business.  See "Liquidity and Capital  Resources" and "Item 1. Business - Recent
Developments" for further details of this transaction.

XM Radio

As of December 31, 2000, we had an equity  interest of  approximately  33.1% (or
21.3% on a fully  diluted  basis)  in XM  Satellite  Radio  Holdings  Inc.  ("XM
Radio"),  a public company;  and, as of December 31, 2000 we controlled XM Radio
through our Board of Director  membership and common stock voting  rights.  As a
result,  all of XM Radio's results for the period from July 7, 1999 (the date we
acquired 100% voting  interest of XM Radio) through  December 31, 2000 have been
included in our consolidated financial statements.

In January 2001, pursuant to Federal Communications  Commission ("FCC") approval
to cease to control XM Radio,  the number of  directors  that we appointed to XM
Radio's Board of Directors was reduced to less than 50% of XM Radio's directors,
and we converted a portion of our super-voting  Class B Common Stock of XM Radio
to Class A Common Stock.  As a result,  we ceased to control XM Radio,  and will
account for our investment in XM Radio pursuant to the equity method,  effective
January 2001.

The operations and financing of XM Radio are maintained  separate and apart from
the operations and financing of Motient.  XM Radio  completed its initial public
offering  in  October  1999.  Please  refer  to  XM  Radio's  audited  financial
statements,  included in its reports and filings  with the SEC,  for more detail
about its business plan, risks, and financial results.

Mobile Satellite Ventures LLC

On June 29, 2000, we formed a new joint  venture  subsidiary,  Mobile  Satellite
Ventures  LLC  ("Satellite  Ventures"),  in which  we own 80% of the  membership
interests.  The remaining 20% interests in Satellite Ventures are owned by three
investors  controlled by Columbia  Capital,  Spectrum  Equity  Investors LP, and
Telcom Ventures L.L.C.  (collectively,  the "Investors").  Satellite Ventures is
using our  existing  satellite  network  to  conduct  research  and  development
activities and exploring the technical,  strategic,  and market potential of new
wireless voice and data communications services.

In January 2001, we entered into an agreement, subject to certain conditions, to
amend in  several  respects  the  terms of our June 2000  transaction  involving
Satellite Ventures.  First, the Investors agreed, subject to certain conditions,
to invest an additional  $50 million to become (in the  aggregate) the owners of
40% of the outstanding interests of Satellite Ventures.  The Investors will also
have an  option,  exercisable  through  June 29,  2002,  for an  additional  $40
million,  to increase their ownership in Satellite Ventures to 50.66% (with each
individual  Investor's stake being less than 20%).  Second,  upon closing of the
transaction,  TMI  Communications  & Company Limited  Partnership  ("TMI"),  the
Canadian   satellite   services   provider,   will   contribute   its  satellite
communications  business assets to Satellite Ventures,  along with our satellite
business  assets.  TMI  will  become  the  owner  of  approximately  27%  of the
outstanding equity of Satellite Ventures. Upon closing of these transactions, we
will sell our remaining  satellite  assets to Satellite  Ventures,  and will own
approximately  33% of the  outstanding  interests  and  be  the  largest  single
shareholder of Satellite Ventures.

Our  significant   acquisitions  in  recent  years,   the  sale  of  the  retail
transportation assets to Aether Systems in 2000, and the impact of consolidating
the  results of XM Radio,  make  period to period  comparison  of our  financial
results  less  meaningful,  and  therefore,  you  should  not rely on them as an
indication of future operating performance.

                                      F-3


Overview

We have incurred  significant  operating  losses and negative cash flows in each
year since we started operations,  due primarily to start-up costs, the costs of
developing  and building the  networks and the cost of  developing,  selling and
providing  our products and  services.  We are, and will  continue to be, highly
leveraged (see "Liquidity and Capital Resources" below).

Our  future  operating  results  could be  adversely  affected  by a  number  of
uncertainties and factors, including:

o      our ability to fund anticipated  capital  expenditures,  operating losses
       and debt  service  requirements  and our  ability  to  secure  additional
       financing as  necessary,  including  our  dependence  on selling XM Radio
       shares and certain limitations thereon,
o      the timely roll-out of certain key customer initiatives and the launch of
       new products or the entry into new market segments,  which may require us
       to continue to incur significant operating losses,
o      our ability to recognize the earn-out and escrow  deferred payments under
       the Aether transaction,
o      our ability  to  fully  recover  the  value  of our inventory in a timely
       manner,
o      our ability to gain  market  acceptance  of new  products  and  services,
       including  our  new  product  offerings, eLink, BlackBerry(tm) by Motient
       and eLink Fortified with Yahoo!(tm),
o      our  ability  to  respond  and react to changes in our  business  and the
       industry because  we  have  substantial  indebtedness,
o      our  ability  to  modify  our  organization,  strategy and product mix to
       maximize the market  opportunities as the market changes,
o      our ability to manage growth effectively,
o      competition from existing  companies that provide services using existing
       communications  technologies  and the  possibility  of  competition  from
       companies using new technology in the future,
o      our ability  to  maintain,  on commercially  reasonable terms, or at all,
       certain technologies  licensed from third parties,
o      the loss of one or more of our key customers,
o      our ability to attract  and  retain key  personnel,
o      the timely availability of an adequate supply of subscriber  equipment at
       competitive price points,
o      our  dependence  on  third  party  distribution  relationships to provide
       access to potential customers,
o      our  ability  to  expand  our  networks  on  a  timely  basis  and  at  a
       commercially  reasonable  cost,  or  at  all, as additional future demand
       increases,
o      regulation by the FCC, and
o      technical anomalies that may occur within the network,  including product
       development,   which  could   impact,   among  other   things,   customer
       performance, satisfaction and revenue under contractual arrangements with
       certain  customers,  or the  operation of the  satellite  network and the
       cost, scope or availability of in-orbit insurance.

Additionally,  XM Radio is a development stage company with no revenues, and its
business is subject to a number of significant risks and uncertainties including
the following:

o      the ability to obtain  additional  financing  necessary  to complete  the
       build out of its system and maintain operations until such time as it can
       reach cash flow positive,
o      satellite  launch  failures,  destruction or damage  during  launch,  and
       premature  failure of XM Radio's satellites that may not be fully covered
       by insurance,  or natural disasters that could damage the service network
       or ground facilities for which there are no backups,
o      the failure  by  satellite and launch contractors to deliver  functioning
       systems in a timely manner,  for  which  XM Radio  may  not have adequate
       remedies,
o      the ability of XM Radio to successfully  integrate  complex  technologies
       into  a  technologically   feasible  configuration,   as  well  as  rapid
       technological changes that could make XM Radio's service obsolete,
o      the timely availability of XM Radio's subscriber equipment at competitive
       prices,
o      competition from traditional and emerging audio  entertainment  providers
       or the  potential  for  customers  to steal  their  signals,  which could
       adversely affect revenues,
o      the ability of XM Radio to gain market acceptance of its service,
o      the  ability  of  XM  Radio   to  achieve  profitability   given  certain
       distribution  agreement  obligations   and  joint   development   funding
       requirements,
o      the  ability  to  maintain,  on commercially reasonable terms, or at all,
       certain technologies licensed from third parties,
o      their  ability  to respond  and react  to changes in their  business  and
       the industry because of their substantial debt,
o      the ability to attract and retain key employees,
o      regulation by the FCC, and
o      the potential impact to its stock price as a result of certain  preferred
       stockholder rights and potential future issuances of common stock.

                                      F-4



We have a  significant  investment  in XM Radio  which  may be  affected  by the
foregoing  risks and  impact  the market  price of our  stock.  For an  expanded
discussion of XM Radio's risk factors,  please refer to XM Radio's most recently
filed prospectus (including  supplements thereto), its most recent Annual Report
on Form 10-K, and its other reports filed from time to time with the SEC.

Year Ended December 31, 2000 and December 31, 1999

Revenue and Subscriber Statistics

Service revenue, which includes our data, voice, and capacity reseller services,
approximated  $73.5  million  for  the  year  ended  December  31,  2000,  which
constituted  a $5.8 million,  or 9% increase over 1999.  The increase in service
revenues in 2000 was  attributable to a 46% increase in  subscribers,  partially
offset by a reduction in average revenue per unit ("ARPU").


                                                 Year Ended December 31,
               Summary of Revenue                   2000               1999            Change           % Change
                                                    ----               ----            ------           --------
                                                                 (in millions)
                                                                                                
     Data Services                                    $52.2             $49.7              $2.5              5
     Voice Service                                     12.2              13.2              (1.0)            (8)
     Capacity Resellers and Other                       9.1               4.8               4.3             90
     Equipment Revenue                                 26.4              23.4               3.0             13
                                              -------------      ------------      ------------
         Total                                       $ 99.9             $91.1              $8.8             10
                                              =============      ============      ============



Our  data  service  revenue  increased  as  a  result  of  approximately  61,900
additional  subscribers  at December 31, 2000, as compared to December 31, 1999,
broken down as follows:



                                                       Revenue Growth
                                       Subscribers
                                                    
             eLink                       42,500           $2.6
             Transportation              17,000            6.9
             Field Service                 (700)          (7.9)
             Telemetry                    3,100            0.9
                                         -------          -----
               Total                     61,900           $2.5
                                         =======          =====


The growth in the  transportation  segment was primarily related to usage by UPS
and to increased  usage by multi-mode  customers.  The decrease in field service
was a result of (i) contract price  reductions from existing large customers and
(ii) the expiration of a large contract.

The decrease in service  revenue from voice services was primarily the result of
a decrease in ARPU caused by a shift in customer usage to lower-usage  emergency
response  services,  and a continued  drop in ARPU for our  maritime  customers,
partially offset by our 8% increase in the number of voice subscribers.

Service  revenue  from  capacity  resellers,  who  handle  both  voice  and data
services,  and other sources,  increased  primarily as a result of approximately
$3.6  million in revenue  under our  Research  and  Development  agreement  with
Satellite Ventures, as well as $250,000 of revenue recognized from the licensing
of certain of our technologies.

For the year ended December 31, 2000 we experienced a 28% decrease in ARPU. This
was  primarily  caused by (i) late year  subscriber  additions and delayed sales
through the reseller  channels for our eLink product that did not add materially
to revenues,  (ii) the impact of a one-time voice contract  credit,  and (iii) a
larger  percentage  of our customers  using our data  service,  versus our voice
service,  which  typically  have a higher ARPU.  These factors were offset by an
increase  in ARPU  caused  by the  revenue  from the  Research  and  Development
Agreement with  Satellite  Ventures for which no  subscribers  were added.  When
normalized for the late year loading,  one-time  adjustment and revenue from the
Research and Development  Agreement,  our ARPU decreased by 19% as compared with
ARPU as of  December  31,  1999.  We expect  our ARPU to  continue  to  decline,
especially in the transportation  market where  approximately 40% of our current
transportation subscribers will be generating revenue on wholesale rates through
Aether, versus the retail rates generated directly by us through November 2000.


                                      F-5


The increase in  equipment  revenue for the year ended  December  31,  2000,  as
compared to 1999 is a result of an increase of  approximately  $12.6  million in
equipment  sales  for our eLink  product  lines,  offset  by (i) a $7.7  million
decrease  in voice  equipment  sales  and (ii) a $2.0  million  decrease  in the
revenue from the multi-mode data product.  We expect this trend to continue with
additional eLink offerings and the shift away from the voice business.

As is common in our  industry,  we report  subscriber  information  and ARPU per
month  statistics.  Although these measures are not recognized  under  Generally
Accepted Accounting  Principles ("GAAP"), we believe that this information helps
to demonstrate important trends in our business.





                                                         Subscribers               Average Revenue Per Unit
                                                     As of December 31,               As of December 31,
                                                     ------------------               ------------------
                                                    2000             1999            2000            1999
                                                    ----             ----            ----            ----
                                                                                          
                  eLink                            45,402           2,848              $11            n/a
                  Field Service                    45,465          46,183               40            n/a
                  Transportation                   73,044          56,053               22            n/a
                  Telemetry                        16,052          12,948               27            n/a
                  Maritime                          6,386           5,648               45            n/a
                  Other                            19,526          17,022               80            n/a
                                                  -------         -------
                           Total                  205,875         140,702              $31            $43
                                                  =======         =======





Expenses

                                                           Year Ended December 31,
                  Summary of Expense                         2000           1999          Change         % Change
                  ------------------                         ----           ----          ------         --------
                                                                       (in millions)
                                                                                               
Cost of Service & Operations                                   $75.5          $69.3           $6.2            9
Cost of Equipment Sales                                         32.8           29.5            3.3           11
Sales & Advertising                                             35.5           23.1           12.4           54
General & Administration-core wireless                          21.5           19.4            2.1           11
General & Administration-XM Radio                               76.1           20.9           55.2          264
Depreciation & Amortization-core wireless                       35.4           54.9          (19.5)         (36)
Depreciation & Amortization-XM Radio                             3.4            0.9            2.5          278
Satellite Impairment Charge                                      --            97.4          (97.4)        (100)
                                                              ------         ------         -------
    Total                                                     $280.2         $315.4         $(35.2)         (11)
                                                              ======         ======         =======        =====



Effective July 7, 1999, as a result of our  acquisition  of all other  ownership
interest  in  XM  Radio  and  changes  in  certain   participating   rights,  we
consolidated  its results with ours from that point forward.  Consequently,  the
discussion of the 2000 results reflect the costs of the consolidated entity. The
results for the year ended December 31, 1999 included expenses on a consolidated
basis from July 7, 1999 forward.

Cost of service and  operations  includes  costs to support  subscribers  and to
operate  the  network.  The  increase  in cost of  service  and  operations  was
primarily attributable to (i) a 22% increase in communication charges associated
with  increased  service  usage and an 11% increase in base  stations  year over
year,  (ii)  increased  rates  under  communication  contracts  to  support  the
terrestrial  network,  (iii) a 22% increase in maintenance  costs  primarily for
maintenance  of our  base  stations,  (iv) a 21%  increase  in  headcount  as we
continue the build-out  and support of our network,  (v) a 20% increase for site
rental costs associated with the build out of the terrestrial  network, and (vi)
an increase of $1.1  million for  research  and  development  efforts  primarily
associated  with our eLink product,  offset by (i) a reduction of  approximately
$3.6 million in Year 2000 costs and (ii) a 23%  reduction in in-orbit  insurance
premiums.  We anticipate  reductions in our cost of service and  operations as a
result  of the sale of our  transportation  assets  to  Aether;  however,  these
savings will be partially offset by continued growth of the terrestrial network.

                                      F-6


The $3.3 million  increase in cost of equipment sold for the year ended December
31,  2000,  as compared to 1999,  was a result of our growth in the sales of our
eLink product  line,  which was  introduced in the third quarter of 1999,  and a
$3.6 million inventory write-down associated with certain first generation eLink
devices. Additionally,  sales of our single-mode,  multi-mode and voice products
were down 55% from last year.

Sales  and   advertising   expenses  as  a  percentage  of  total  revenue  were
approximately 36% for 2000,  compared to 25% for 1999. The increase in sales and
advertising expenses year over year was primarily  attributable to (i) increased
costs of providing  demonstration  equipment in an effort to seed the market for
our new  products,  (ii)  increased  trade show  activity in 2000 as compared to
1999,  (iii) costs incurred in connection  with our company name change in April
2000,  (iv) an increase in  advertising  in 2000 to heighten our presence in the
marketplace  and to highlight our new product  offerings,  (v)  advertising  and
other  costs  associated  with our roll out of our eLink  fortified  with Yahoo!
product in November 2000 (see below),  (vi) eLink subscriber  acquisition costs,
and (vii) a 9% increase  in  headcount  to support  the new sales and  marketing
initiatives.  We expect  these costs to continue to increase as we increase  our
customer acquisitions and brand recognition efforts.

In July 2000, we signed an agreement with Yahoo! to promote our  newly-developed
eLink  Fortified with Yahoo!  wireless  product.  In addition to our advertising
commitment under this contract, we also issued common stock purchase warrants to
Yahoo!.  The Yahoo!  warrants were valued at approximately  $4.8 million.  These
warrants will be amortized to sales and  advertising in accordance with the roll
out of the advertising plan, anticipated to run through July 2002.

General  and  administrative  expenses  for  the  core  wireless  business  as a
percentage of total revenue were approximately 22% for 2000, compared to 21% for
1999.  The increase in 2000 costs over 1999 costs in our core wireless  business
general and  administrative  expenses was  attributable  to (i) a 9% increase in
general and  administrative  headcount from the prior year,  (ii) an overall 16%
increase from 1999 in total  headcount  causing an increase in  employee-related
costs,  (iii) increases in facility costs as a result of increased space rental,
(iv) an increase in bad debt expense  primarily  associated  with two customers,
and (v) an increase in regulatory costs,  associated principally with our appeal
of the FCC's  decision to grant  applications  to  competitors to provide mobile
satellite services in the United States. See "Regulation" below.

General and administrative  expenses for XM Radio increased as XM Radio prepared
for the launch of service.  Increases in costs are associated  with research and
development   efforts,   additional  facility  charges,  and  headcount  related
expenses. Additionally, in 2000, XM Radio incurred non-cash compensation charges
of approximately $1.2 million for performance-based stock options as a result of
adopting  the  provisions  of  Financial  Accounting  Standards  Board  ("FASB")
Interpretation  No. 44,  "Accounting  for Certain  Transactions  Involving Stock
Compensation" ("FIN 44"). XM Radio will continue to recognize quarterly non-cash
compensation  charges in accordance with FIN 44 depending on the market value of
XM Radio's Class A common stock at the end each quarter.

Depreciation and amortization for the core wireless  business was  approximately
35% of total  revenue  for 2000,  compared  to 60% for  1999.  The  decrease  in
depreciation and amortization expense in 2000 was primarily  attributable to the
$97.4 million  asset  impairment  charge  related to our satellite and satellite
related ground segment assets taken in the fourth quarter of 1999. This resulted
in a reduction in depreciation  expense of approximately $16.3 million for 2000.
Further  reductions  in  depreciation  expense  are a result  of  older  assets,
particularly  those associated with the mobile messaging  business,  being fully
depreciated by the end of 1999.

Interest and other income was $31.4  million (of which $27.6  million was earned
by XM Radio) for the year ended  December 31, 2000,  as compared to $8.5 million
(of which $2.8  million was earned by XM Radio) for the year ended  December 31,
1999.  Excluding  interest  earned by XM Radio,  the $1.9  million  decrease  in
interest earned by the core wireless  business  reflects reduced interest earned
on our  escrow  established  for the  Senior  Notes as a result of lower  escrow
balances,  which was  essentially  offset by interest earned in 1999 on our note
receivable  from XM Radio, as XM Radio was accounted for under the equity method
of accounting during the first six months of 1999.

We incurred  $62.5 million of interest  expense in 2000, all of which related to
our core wireless  business,  as XM Radio capitalized  interest  associated with
constructing  their satellite system,  compared to $66.0 million during 1999, of
which $2.7  million was  incurred by XM Radio.  The net  decrease,  excluding XM
Radio, of $0.8 million for the year was a result of (i) a $4.3 million  decrease
in amortization of warrants,  (ii) prepaid  interest and debt offering costs due
to the debt  discount  costs  that  were  written  off in 1999 and 2000  when we
extinguished $82.8 million of debt on the bank facilities,  and (iii) lower debt
balances,  offset by an  approximate  3% increase in interest  rates on our bank
facility.  We expect that interest  costs will continue to be  significant as we
continue to draw down on our bank facility.


                                      F-7



In January  1999,  we issued a note  payable  in the amount of $21.5  million to
Baron Asset Fund, a stockholder  and a guarantor of our bank facility.  The note
was secured and exchangeable for a portion of our shares of XM Radio.  Since the
note was indexed to XM Radio stock,  which decreased in value from December 1999
to January 2000, we recorded an unrealized  gain of $3.9 million before the note
was  exchanged.  The note  payable was  exchanged  for XM Radio stock in January
2000, and we recorded a  non-recurring  gain of $32.9 million for the difference
between the  carrying  value of the debt and XM Radio stock  exchanged to settle
the obligation.

Net capital  expenditures  for the year ended  December 31,  2000,  excluding XM
Radio,  for property and equipment were $22.2 million  compared to $13.8 million
in 1999.  Expenditures  consisted  primarily of assets necessary to continue the
build out of our terrestrial network,  including  approximately $3.6 million for
the purchase of new  frequencies.  In addition,  XM Radio spent $51.4 million in
2000 for leasehold improvements on its new office building, as well as for other
expenditures for office furniture and equipment.

Net capital  expenditures for property under construction  represent those costs
associated  with the build out of the XM Radio network.  It is anticipated  that
these  expenditures  will continue to be  significant  as XM Radio  continues to
build out its  satellites and ground  segments.  For the year ended December 31,
2000, XM Radio spent $414.9 million for property under construction.


Years Ended December 31, 1999 and 1998

Service Revenue and Subscriber Statistics

Service revenue, which includes our data, voice, and capacity reseller services,
approximated  $67.7 million for 1999, which  constituted a $9.7 million,  or 17%
increase  over  1998.  The  increase  in  service  revenues  year  over year was
primarily  attributable  to a full year of  terrestrial  data  service  in 1999,
versus only nine months in 1998.  Our 1999 revenue growth was slowed as a result
of  delays  in  our  rollout  of  new  product  initiatives.   In  the  case  of
MobileMAX2(tm),  this  delay also  caused us to have  product  shortages  of our
first-generation  equipment,  so we had limited equipment  available for sale to
generate new customers.



                                                             Year Ended
                                                            December 31,

          Summary of Revenue                             1999        1998       Change     % Change
          ------------------                             ----        ----       ------     --------
                                                                (in millions)
                                                                                  
          Data Service                                  $ 49.7      $ 40.1        $9.6         24%
          Voice Service                                   13.2        14.0        (0.8)        (6)
          Capacity Resellers and Other                     4.8         3.9         0.9         23
          Equipment Revenue                               23.4        29.2        (5.8)       (20)
                                                        ------      ------        -----       ----
             Total                                      $ 91.1      $ 87.2        $3.9          4%
                                                        ======      ======        =====       ====


The decrease in service  revenue from voice services was primarily a result of a
32% decrease in our average revenue per unit for maritime subscribers  following
the sale of our maritime business to a reseller in late 1998. This was offset by
an increase in our total voice  subscriber  customer base of 42% as well as Year
2000 priority  service fees. Our data service  revenue  increased as a result of
the inclusion of Motient  Communications  Inc. (formerly known as ARDIS) for the
full twelve months in 1999 as compared to nine months in 1998, which contributed
$9.0 million in additional  revenue year over year, and a 15% increase in mobile
data units during 1999. Service revenue from capacity resellers, who handle both
voice and data  services,  increased  primarily as a result of two new customers
and increased contract commitments from current customers.

The  decrease  in  revenue  from  the  sale of  equipment  reflects  the sale of
approximately  $8.5 million of maritime  voice  equipment to one customer in the
fourth quarter of 1998.  Excluding this sale, revenue from the sale of equipment
increased in 1999 because of increased voice product sales primarily  associated
with  companies  preparing  for the Year 2000,  as well as marketing  promotions
which increased the sales of both data and voice equipment.

                                      F-8


As is common in our  industry,  we report  subscriber  information  and  average
revenue  per  unit  per  month  statistics.  Although  these  measures  are  not
recognized  under GAAP, we believe that this  information  helps to  demonstrate
important trends in our business.








                                                                             Average Revenue
                                                   Subscribers                   per Unit
                                                    Year Ended                  Year Ended
                                                   December 31,                December 31,
                                                   ------------                ------------
                                               1999           1998         1999         1998
                                               ----           ----         ----         ----
                                                                             
                     Data                     22,202        92,700          $42          $51
                     Voice                    18,500        13,000           80          110
                                             -------       -------
                        Total                 40,702       105,700          $47          $60
                                             =======       =======


Additionally,  our mix of  subscribers  can be broken  down  into the  following
markets:




                                                                   As of
                                                                December 31,
                                                              1999         1998
                                                              ----         ----
                                                                      
                     eLink                                      2           --
                     Field Service                             33%          47%
                     Transportation                            40           27
                     Telemetry                                  9           10
                     Maritime                                   4            3
                     Other                                     12           13





Expenses

                                                             Year Ended
                                                            December 31,
                                                                                                 %
     Summary of Expenses                                 1999         1998      Change         Change
     ---------------------------                         ----         ----      ------         ------
                                                                 (in millions)
                                                                                 
     Cost of Service & Operations                      $  69.3      $  55.8    $  13.5           24%
     Cost of Equipment Sales                              29.5         30.4       (0.9)          (3)
     Sales & Advertising                                  23.1         19.2        3.9           20
     General & Administrative                             19.4         17.3        2.1           12
     General & Administrative-XM Radio                    20.9          --        20.9          100
     Depreciation & Amortization                          54.9         52.7        2.2            4
     Depreciation & Amortization - XM Radio                0.9          --         0.9          100
     Satellite Impairment Charge                          97.4          --        97.4           --
                                                       -------      ------     -------       ------
        Total                                          $ 315.4      $ 175.4    $ 140.0          80%
                                                       =======      =======    =======       ======


Effective July 7, 1999, as a result of our  acquisition  of all other  ownership
interest  in  XM  Radio  and  changes  in  certain   participating   rights,  we
consolidated its results with ours from that point forward.  Results of XM Radio
prior to July 7, 1999 were accounted for under the equity method of accounting.

Cost of service and  operations  includes  costs to support  subscribers  and to
operate  the  network.  The  increase  in cost of  service  and  operations  was
primarily attributable to (i) additional headcount, primarily as a result of the
Motient  Communications   Acquisition,   (ii)  increased  communication  charges
associated  with  increased  service usage and costs to support the  terrestrial
network,  (iii) system and base station  maintenance to support the  terrestrial
network, (iv) site rental costs associated with the terrestrial network, and (v)
approximately  $3.6  million  of  incremental  Year  2000  costs  that we do not
anticipate to recur in future years. As a percentage of revenue, cost of service
and operations  has increased as a result of the variable costs incurred  within
the  terrestrial  network,  such as site rent and  telecommunications  costs. XM
Radio did not incur any cost of service and operations expenses in 1999.

The cost of equipment sold decreased $0.9 million,  or 3%, from $30.4 million in
1998 to $29.5  million in 1999.  The  decrease  from 1998 to 1999 in the cost of
equipment  sold was  primarily  attributable  to the  impact  of the sale of the
maritime  business  in 1998  offset  by (i)  increased  sales of voice  products
supporting Year 2000 preparedness, (ii) increased warranty costs associated with
the increased  number of registered  first-generation  multi-mode data products,
and (iii) an inventory  valuation charge of approximately  $4.2 million recorded
in the  fourth  quarter  of 1999  related  to  older  voice  and  satellite-only
transportation inventory.


                                      F-9


The 20%  increase  in  sales  and  advertising  expenses  from  1998 to 1999 was
primarily  attributable  to (i) increased  headcount  costs  resulting  from the
inclusion of Motient  Communications for the full twelve months of 1999 and (ii)
costs  associated  with the  launch  of our new  eLink  service  offering  which
included  additional  advertising  and headcount for sales and support staff. XM
Radio did not incur any sales and advertising expenses in 1999.

General and  administrative  expenses were $40.3 million in 1999, of which $20.9
million  were  related to XM Radio.  Excluding  XM Radio  expenses,  general and
administrative  expenses  represented  21% and 20% of total  revenue in 1999 and
1998,  respectively.  The $2.1  million  increase in general and  administrative
expenses was primarily  attributable  to an increase in headcount from the prior
year causing an increase in bonuses,  training costs,  payroll taxes, and 401(K)
match expense.

Depreciation and amortization expenses were $55.8 million in 1999, of which $0.9
million  was  incurred  by  XM  Radio.  Excluding  XM  Radio,  depreciation  and
amortization was approximately 60% of total revenue in 1999 and 1998. The dollar
increase in depreciation and amortization expense was primarily  attributable to
(i) a full year of depreciation  for the Motient  Communications  assets in 1999
versus nine months in 1998 and (ii)  depreciation on new assets  associated with
the  expansion of the  terrestrial  network.  In the fourth  quarter of 1999, we
recorded a $97.4 million asset  impairment  charge  related to our satellite and
satellite related ground segment assets. Although the satellite and other assets
remain  in sound  working  order,  we  determined  that we would  not be able to
recover the full  carrying  value of our  satellite  and ground  segment  assets
through future  undiscounted cash flows, due to the continuing shift of focus of
our  resources  from  voice  toward  data  business,  as well as the loss of our
satellite  exclusivity in the United States which occurred in the fourth quarter
of 1999.  As a result,  we recorded an  impairment  charge for the excess of the
carrying  value of these assets over their fair value which we  estimated  using
the discounted future cash flows related to these assets.

Interest and other income,  including that earned by XM Radio,  was $8.5 million
for 1999,  as  compared  to $4.4  million for 1998.  Excluding  $2.8  million of
interest  earned by XM Radio on its  short-term  investments,  the  increase was
primarily a result of interest earned on XM Radio convertible debt, prior to the
consolidation of XM Radio,  offset by lower balances on escrows established with
the proceeds from the $335 million debt offering.

We incurred $66.0 million of interest expense in 1999, of which $2.7 million was
incurred  by XM Radio,  compared to $53.8  million of interest  expense in 1998,
reflecting  (i) the  amortization  of debt discount,  prepaid  interest and debt
offering  costs in the amount of $15.8  million,  excluding  XM Radio,  in 1999,
compared to $16.2 million in 1998,  (ii) interest  expense,  at 12 1/4 %, on the
$335 million  notes issued in March 1998,  offset by lower debt  balances on our
bank  facility as a result of the partial  repayment in July 1999,  as discussed
below.

In January 1999, we issued a note payable to Baron Asset Fund, a stockholder and
a guarantor of our bank facility,  in the amount of $21.5 million.  The note was
secured and was exchangeable for a portion of our shares of XM Radio.  Since the
note was indexed to XM Radio stock, which increased in value during the year, we
recorded an  unrealized  loss in 1999 in the amount of $27.4  million.  The note
payable was  exchanged  for XM Radio stock in January  2000,  and we recorded an
offsetting  gain in the first  quarter of 2000 for the  difference  between  the
carrying  value  of  the  debt  and XM  Radio  stock  exchanged  to  settle  the
obligation.

Net capital expenditures, excluding XM Radio, in 1999 for property and equipment
were $13.8  million  compared to $12.5 million in 1998.  Expenditures  consisted
primarily  of assets  necessary  to  continue  the build out of our  terrestrial
network. In addition, from the period July 1, 1999 through December 31, 1999, XM
Radio expended $1.7 million primarily for office furniture and equipment.

Net capital  expenditures for property under construction  represent those costs
associated with the build out of the XM Radio network.  For the period from July
1, 1999 through December 31, 1999, XM Radio expended $141.2 million for property
under construction.


                                      F-10


Liquidity and Capital Resources

Adequate  liquidity  and  capital  are  critical to our ability to continue as a
going concern and to fund subscriber  acquisition  programs necessary to achieve
positive  cash flow and  profitable  operations.  We expect to  continue to make
significant  capital  outlays to fund interest  expense,  new product  rollouts,
capital  expenditures  and working capital before we begin to generate  positive
cash  flow  from  operations.  We  expect  these  outlays  to  continue  for the
foreseeable future.

Summary of Liquidity and Financing Sources for Core Wireless Business

Our current operating  assumptions and projections  reflect our best estimate of
subscriber and revenue growth and operating expenses. We anticipate that capital
expenditures,  operating losses,  working capital and debt service  requirements
through 2001 can be met by (i) cash on hand, (ii) borrowings available under our
bank financing and vendor financing, (iii) proceeds realized through the sale of
inventory  relating to eLink and  BlackBerry  TM, (iv)  reduction  of  operating
expenditures, (v) additional debt or equity financing transactions, and (vi) our
investment  in  XM  Radio.  Additionally,  we  have  the  potential  to  receive
additional funds from the Aether  transaction as well as the Satellite  Ventures
transaction.  Our financial results could  deteriorate,  and our ability to meet
our  projections  is  subject  to  numerous  uncertainties,  and there can be no
assurance  that  the  current   projections  will  be  achieved.   If  our  cash
requirements are more than projected,  we will require  additional  financing in
amounts which may be material.  The type, timing and terms of financing that the
we select will be  dependent  upon our cash  needs,  the  availability  of other
financing  sources and the prevailing  conditions in the financial  markets.  We
cannot  guarantee  that  additional  financing  sources will be available at any
given time or available on favorable terms.

Our  consolidated  financial  statements  have been  prepared on a going concern
basis,  which  contemplates  the  realization  of  assets  and  satisfaction  of
liabilities in the normal course of business.  The successful  implementation of
our business  plan requires  substantial  funds to finance the  maintenance  and
growth of our  operations,  network and  subscriber  base and to expand into new
markets.  We have an accumulated  deficit and have historically  incurred losses
from  operations  which are expected to continue for  additional  periods in the
future.  There can be no assurance that our operations  will become  profitable.
These  factors,  along  with our  negative  operating  cash  flows  have  placed
significant  pressures on our financial  condition and liquidity  position,  and
create  substantial doubt about our ability to continue as a going concern.  The
accompanying financial statements do not include any adjustments relating to the
possible effects on the  recoverability  and classification of assets or amounts
and classification of liabilities that might be necessary should we be unable to
continue as a going concern.

In January and February 2001, we sold, in two separate  transactions,  2 million
shares of our XM Radio Class A Common  Stock,  at an average price of $16.77 per
share,  for total proceeds of $33.5 million.  Approximately  $8.5 million of the
proceeds  were used to repay  and  permanently  reduce  our bank  financing.  In
exchange for the guarantors agreeing to waive certain debt repayment obligations
for the second sale of shares,  we and the guarantors have agreed that the first
$16.5  million of proceeds  received  from the earlier of (i) the closing of the
Satellite  Ventures  transaction  and (ii) any other stated  reduction  event to
occur in the year 2002 will be used to pay down the bank financing.

On April 2, 2001,  we entered into an agreement  for  financing in the amount of
$25 million from Rare Medium Group,  Inc. ("Rare") in the form of a note payable
at  12.5%   annual   interest   with  a  maturity   date,   subject  to  certain
mutually-agreed upon extensions,  of 180 days from funding, which is expected to
occur by April 6, 2001. Additionally,  we have the potential to receive up to an
additional $25 million of funding, on comparable terms, the amount of which will
be based on the market price of XM Radio stock. The notes are  collateralized by
up to 5 million of our XM Radio shares,  and Rare has the option to exchange the
notes for a number of XM Radio shares  equivalent  to the  principal of the note
plus any accrued interest thereon. Of the first $25 million that we received, we
used $6.1 million to repay and  permanently  reduce our bank financing and $14.4
million is subject to availability upon the approval of the guarantors.

As of March 29, 2001,  we held  approximately  14.7  million  shares of XM Radio
stock;  however,  approximately  13.7  million of such shares are pledged to and
held by Rare or our banks and  guarantors  to secure our  obligations  under our
bank  financings  and the notes with Rare.  There is no guarantee that the banks
and  guarantors  would  agree to  release  any  portion  of their  share of this
security to permit us to liquidate  our XM Radio  shares,  or that such approval
would be on terms favorable to us. Further, our ability to sell our shares of XM
Radio stock in the public markets is generally  limited to the quarterly  volume
restrictions under Rule 144 of the Securities Act.

The carrying  value of our  investment in XM Radio pursuant to the equity method
of accounting  was $288,064 (or $17.19 per share) as of December 31, 2000. As of
March 30,  2001,  the market price of XM Radio common stock was $7.00 per share,
$10.19 per share less than our carrying value.  Pursuant to the equity method of
accounting, beginning in 2001, we will be required to assess, considering market
and other appropriate factors,  whether a permanent impairment of our investment
in XM Radio has occurred and an impairment loss recognized.


Our current financing arrangements are summarized below:

o A $108.8  million bank financing  facility,  consisting of (i) a $77.3 million
unsecured  five-year  reducing  revolving  credit  facility,  none of which  was
available for borrowing as of March 30, 2001, and (ii) a $31.5 million five-year
term loan facility,  with up to three additional  one-year extensions subject to
the  lenders'  approval,  which  is  secured  by  our  assets,  principally  our
stockholdings in XM Radio. The bank financing is severally  guaranteed by Hughes
Electronics  Corporation,  Singapore  Telecommunications Ltd., and Baron Capital
Partners,  L.P. Both  facilities bear interest,  generally,  at 100 basis points
above  London  Interbank  Offered  Rate C LIBOR.  Certain  proceeds  that we may
receive are required to be used to repay and reduce the bank  financing,  unless
otherwise waived by the lenders and the guarantors. As of March 30, 2001, we had
outstanding  borrowings  of $31.5  million  under  the  term  loan  facility  at
approximately  6.19%,  and $77.3 million under the revolving  credit facility at
rates  ranging  from 6.0% to 8.0%.  Additionally,  in  connection  with the bank
financing,  we entered into an interest  rate swap  agreement  which reduces the
impact of interest  rate  increases  on the term loan  facility.  Under the swap
agreement, which expired in March 2001, we will receive an amount equal to LIBOR
plus 50 basis  points,  paid  directly to the banks on a quarterly  basis,  on a
notional amount of $41 million until the termination date of March 31, 2001. The
unamortized  fee paid for the swap  agreement  is  reflected  as an asset in the
accompanying financial statements.  We are exposed to a credit loss in the event
the counter  party does not perform  under this  agreement;  however,  we do not
believe there is a significant risk of non performance,  since the counter-party
to the swap agreement is a major financial institution.


                                      F-11


As noted below,  any proceeds we receive from the Aether escrow or earn-out will
be used to repay and permanently reduce the revolving credit facility.

o    A vendor  financing  commitment  from  Motorola,  Inc., a  stockholder,  to
     provide up to $15 million of vendor  financing  to finance up to 75% of the
     purchase price of additional terrestrial network base stations. Loans under
     this  facility  bear  interest  at a rate  equal to LIBOR plus 7.0% and are
     guaranteed by Motient and each of its wholly-owned subsidiaries.  The terms
     of the facility  require that amounts  borrowed be secured by the equipment
     purchased  therewith.  As of  February  28,  2001,  there was $2.2  million
     available for borrowing under this facility.

o    $9.6 million capital lease for network equipment acquired in July 2000. The
     lease has a term of three years and an effective interest rate of 14.718%.

o    $335  million of senior  notes  issued in 1998,  at the time of the Motient
     Communications Acquisition.  The notes bear interest at 12.25% annually and
     are due in 2008. A portion of the net proceeds of the sale of the notes was
     used to finance  pledged  securities  that are  intended to provide for the
     payment  of the  first  six  interest  payments  on these  notes.  Interest
     payments are due semi-annually,  in arrears,  and began on October 1, 1998.
     The notes were issued by a subsidiary of Motient,  and are fully guaranteed
     by Motient.

o    We have also arranged the financing of certain  trade  payables,  and as of
     February 28, 2001, $1.3 million of deferred trade payables were outstanding
     at rates ranging from 5.93% to 7.24% and are  generally  payable by the end
     of 2001.


Sale of Retail Transportation Business to Aether Systems

In November 2000, we sold our retail  transportation  assets to Aether  Systems,
Inc.  Concurrently,  Aether entered into two long-term,  prepaid network airtime
agreements  with a total value of $20  million,  of which $5 million was paid at
closing,  pursuant to which Aether will  purchase  airtime on our  satellite and
terrestrial networks. Aether also became an authorized reseller of our eLink and
BlackBerry(tm) by Motient wireless email service offerings.  Aether acquired all
of the assets used or useful in the retail transportation  business, and assumed
the related  liabilities.  Aether also  purchased the existing  inventory in the
business, and was granted a perpetual license to use and modify any intellectual
property owned by or licensed to us in connection with the business.

The purchase price for these assets was $45 million,  plus the then-current book
value of the inventory for the business. All of this amount was paid at closing,
except for $10  million  which was  deposited  in an escrow  account and will be
released  to Motient  upon  satisfaction  of certain  criteria  with  respect to
MobileMAX2(tm),  and $3.7  million  that was held  back  will be paid to us upon
collection of certain accounts receivable.  In addition, we have the opportunity
to receive up to an additional $22.5 million as an "earn-out"  payment,  subject
to the satisfaction of certain  operating  results for the business during 2001.
Of the proceeds  received at closing,  $20 million was used to immediately repay
and permanently reduce the revolving credit facility. Proceeds, if any, from the
$10 million escrow and the $22.5 million earn-out will be recorded as additional
purchase  consideration  when  received  and  will  also be used  to  repay  and
permanently reduce the revolving credit facility.

Commitments

At December 31, 2000, we had remaining contractual commitments to purchase eLink
and other subscriber  equipment  inventory in the amount of $21.5 million during
2001.

We also have certain other capital,  advertising, and operating expense contract
commitments that total approximately $2.7 million over the next 18 months.

Subsequent to December 31, 2000, we entered into additional product  development
agreements for the purchase of engineering services and licenses,  to be used in
future applications of our eLink product.  Additionally,  should the engineering
effort prove  successful,  we have committed to purchase  additional  subscriber
inventory.  These  commitments,   including  the  inventory  commitment,   total
approximately  $3.6  million and will be paid during  2001.  Should we decide to
cancel these agreements,  we would incur cancellation penalties of any remaining
unpaid   license  and   non-recurring   engineering   fees,   the  cost  of  any
non-refundable  components purchased on behalf of Motient, plus fifty-percent of
any remaining  inventory  commitment.  As of March 30, 2001,  this  cancellation
penalty would have been approximately $2.4 million.

                                      F-12




The aggregate  fixed and  determinable  portion of all commitments for inventory
purchases and other fixed contracts is $27.9 million,  of which $27.4 million is
due in 2001.

XM Radio

XM Radio is operated,  managed,  and funded  separately  from our core  wireless
business.  While  we do not  have  any  obligation  or  commitments  to  provide
additional  funding to XM Radio,  and do not expect to  provide  any  additional
funding, we may choose to do so in the future. XM Radio will require significant
additional funding in the future. If XM Radio is not successful in obtaining the
additional  required  financing,  our investment in XM Radio could be negatively
impacted.

In the first quarter of 2000, XM Radio raised an  additional  $228.5  million in
net proceeds  through a follow-on  offering of 4.4 million shares of its Class A
common stock and 2.0 million shares of Series B convertible redeemable preferred
stock.  In March 2000, XM Radio  completed a high yield debt offering of 325,000
units,  each unit  consisting of $1,000  principal  amount of 14% Senior Secured
Notes due 2010 and one  warrant to  purchase  8.024815  shares of Class A common
stock of XM Radio at an exercise  price of $49.50 per share.  XM Radio  realized
net  proceeds  of $191.5  million,  excluding  $123.0  million  used to  acquire
securities  which will be used to pay interest  payments due under the notes for
the first three  years.  In August 2000,  XM Radio closed a private  offering of
235,000 shares for $1,000 per share of its 8.25% Series C convertible redeemable
preferred  stock and raised  additional  net  proceeds of  approximately  $226.8
million.  XM Radio recorded a $123.0 million  beneficial  conversion charge that
reduced earnings available to common stockholders.  The issuance of the Series C
preferred  stock caused the exercise price of the warrants sold in March 2000 to
be adjusted to $47.94.

In March 2001, XM Radio completed a follow-on  offering of 7.5 million shares of
Class A common  stock,  which  yielded  net  proceeds  of $72.0  million,  and a
concurrent   offering  of  7.75%  convertible   subordinated   notes  due  2006,
convertible  into shares of Class A common stock at a conversion price of $12.23
per share, which yielded net proceeds of $120.7 million.  These issuances caused
the conversion  price of the Series C preferred stock to be adjusted from $26.50
to $22.93,  the exercise price of the warrants sold in March 2000 to be adjusted
to $45.27,  and the number of warrant  shares to be  increased  to 8.776003  per
warrant.

XM Radio is also subject to certain commitments and contingencies:

o        XM Radio has a  distribution  agreement  with General Motors  that will
         require significant expenditures in the future.

o        Under  its   satellite   contract   with   Boeing   Satellite   Systems
         International, Inc. ("BBS" - formerly  Hughes Space and Communications,
         Inc.), XM Radio  will incur payment obligations of approximately $541.3
         million,  which  includes amounts that XM Radio expects to pay pursuant
         to the exercise of the option to build the ground spare   satellite and
         certain financing costs and in-orbit incentive  payments.  On June 27,
         2000, XM Radio  exercised the option to  build the ground spare.  As of
         December  31,  2000,  XM Radio  had paid  $466.0  million   under  this
         contract with BBS, and $1.6 million had been accrued.

o        XM Radio has signed a contract with LCC International,  Inc. (a related
         party to XM Radio),  for the  engineering of its  terrestrial  repeater
         network. In January 2001, the scope of the contract was amended and the
         estimated contract value was reduced to $107.5 million.  As of December
         31, 2000,  XM Radio has paid $50.2  million,  and accrued an additional
         $15.1 million,  under this  contract.  XM Radio also entered into tower
         construction  agreements  with  various  companies  which will  provide
         certain services which LCC International, Inc. was to provide.

o        Effective  October  1999,  XM  Radio  signed  a  contract  with  Hughes
         Electronics  Corporation for the design,  development,  and purchase of
         terrestrial  repeater  equipment.  The total value of this  contract is
         $128.0  million,  which  could  be  modified  based  on the  number  of
         terrestrial  repeaters that are required for the system. As of December
         31, 2000, XM Radio had paid $15.4 million under this contract.

o        On February 16, 2000, XM Radio and Sirius Satellite Radio, a competitor
         of XM Radio,  signed an  agreement  to develop a unified  standard  for
         satellite radios to facilitate the ability of consumers to purchase one
         radio capable of receiving both XM Radio's and Sirius Satellite Radio's
         services.


                                      F-13


Satellite Ventures

As noted above, in June 2000 we formed a new joint venture subsidiary, Satellite
Ventures,  in which we own 80% of the  membership  interests.  The remaining 20%
interest in Satellite  Ventures is owned by the Investors (the "June  Investment
Agreement").  The  Investors  paid $50  million to  Satellite  Ventures  (in the
aggregate),  in exchange  for their 20%  interest.  Of the $50  million  payment
received by Satellite Ventures,  $6.0 million was retained by Satellite Ventures
to fund certain  research and  development  activities,  with the  remaining $44
million  paid to Motient  Services  Inc.  ("Motient  Services"),  which owns our
satellite and related assets. Of the $44 million paid to Motient  Services,  $20
million was payment  under a Research  and  Development,  Marketing  and Service
Agreement, and $24 million was a deposit under the asset sale agreement pursuant
to which  Motient  Services  would  sell its  satellite  and  related  assets to
Satellite  Ventures.

In connection with the Aether transaction, we and the other members of Satellite
Ventures agreed to reduce the purchase price in the asset sale agreement between
Satellite Ventures and Motient Services from $120 million to $80.5 million, plus
half of any earn-out consideration that would have been received by Motient from
Aether.  This  adjustment  was made to  account  for the fact  that we  received
consideration  in the Aether  transaction in exchange for assets which otherwise
would have been available to be acquired by Satellite Ventures.

In January 2001, we entered into an agreement, subject to certain conditions, to
amend in  several  respects  the  terms of our June 2000  transaction  involving
Satellite Ventures.  First, the Investors agreed,  subject to certain conditions
including  approvals by the FCC, to invest an  additional  $50 million to become
(in the aggregate) the owners of 40% of the  outstanding  interests of Satellite
Ventures.  The Investors will also have an option,  exercisable through June 29,
2002,  for an additional $40 million,  to increase their  ownership in Satellite
Ventures to 50.66% (with each individual  Investor's stake being less than 20%).
Second,  upon closing of the transaction,  TMI  Communications & Company Limited
Partnership ("TMI"),  the Canadian satellite services provider,  will contribute
its satellite  communications business assets to Satellite Ventures,  along with
our satellite business assets. TMI will become the owner of approximately 27% of
the  outstanding  equity of  Satellite  Ventures  and will  also  receive a cash
payment of $7.5 million, as well as a $11.5 million 5-year note.

Upon closing of these transactions,  we will sell our remaining satellite assets
to  Satellite  Ventures,  in  exchange  for a cash  payment of $45 million and a
5-year,  $15 million note. Upon closing,  we will own  approximately  33% of the
outstanding  interests  and be  the  largest  single  shareholder  of  Satellite
Ventures.  A portion of Satellite  Ventures' cash payment to TMI at closing will
be funded by our loan of $2.5  million,  in exchange for a note back in the same
amount.

Under the original  transaction,  at any time until June 29, 2002, the Investors
had certain  rights to elect to convert  their  interests in Satellite  Ventures
into shares of our common stock at a  conversion  price which will be set at the
time of  exercise,  between  $12 and $20 per  share,  as  specified  in the June
Investment Agreement. As part of the January 2001 agreement,  this right remains
in place, but is limited to an aggregate of $55 million.

Under the terms of the bank facility  waivers  received by Motient in connection
with the January 2001  agreement,  half of all amounts to be received by Motient
from  Satellite  Ventures in  connection  with  Motient's  sale of its satellite
business assets to Satellite Ventures, including the $45 million in cash and $15
million  note  receivable,  will be  used  to  repay  outstanding  amounts,  and
permanently reduce commitments, under Motient's revolving credit facility.

The  consummation  of the  transactions  is subject to receipt of all  necessary
regulatory  governmental  approvals  and  consents,   including,   for  example,
approvals  under  the  Hart-Scott-Rodino  Antitrust  Improvements  Act,  and FCC
approvals  with  respect to both the  transfer of  Motient's  FCC  licenses  and
Satellite Ventures' plans for a new generation integrated  satellite-terrestrial
system,  approvals  by  Canadian  regulatory  authorities  with  respect  to the
transfer  of  TMI's  communications  licenses  to the  new  venture,  and  other
customary conditions relating to due diligence review, third party consents, and
similar matters.  Beginning in January 2002, if certain closing  conditions have
not occurred,  we and TMI have certain  rights to require the closing to proceed
at such time, and if less than all of the Investors participate at such time, we
and TMI may,  under certain  circumstances,  purchase the interests in Satellite
Ventures that would have otherwise  been acquired by any such  non-participating
Investors.



                                      F-14



Summary of Cash Flow for 2000 and 1999



                                                                   Year Ended December 31, 2000
                                                               Core
                                                             Business      XM Radio     Consolidated
                                                             --------      --------     ------------
                                                                               
Cash Used In Operating Activities                           ($88,935)     ($37,447)     ($126,382)

Cash Provided by (Used in) Investing                          46,750      (559,401)      (512,651)

Cash Provided by Financing Activities:
     Equity issuances                                         24,025       456,529        480,554
     Debt payments on capital leases, vendor financing        (6,424)           --         (6,424)
     Net funding from (repayment of) notes                    26,250            --         26,250
     High yield financing, including associated warrants          --       322,889        322,889
     Other                                                        78        (8,365)        (8,287)
                                                             -------      ---------     ----------
Total Provided by Financing Activities                        43,929       771,053        814,982
                                                             -------      --------      ---------

Total Change in Cash                                          $1,744      $174,205       $175,949
                                                             =======      ========      =========

Cash and Cash Equivalents                                     $2,520      $224,903       $227,423
Working Capital                                               13,337       261,166        274,503
Restricted Investments included in working capital            20,709        95,277        115,986





                                                                 Year Ended December 31, 1999 (1)
                                                              Core
                                                             Business      XM Radio     Consolidated
                                                             --------      --------     ------------
                                                                               
Cash Used In Operating Activities                           ($94,203)    ($12,774)      ($106,977)

Cash Provided by (Used in) Investing                          (2,490)    (215,613)       (218,103)

Cash Provided by Financing Activities:
    Stock/warrant issuances                                  122,253      114,428         236,681
    Debt payments on capital leases, vendor financing         (7,272)          --          (7,272)
    Net funding from (repayment of) notes                    (25,500)     174,927         149,427
    Other                                                      5,703      (10,270)         (4,567)
                                                            --------     ---------     -----------
    Total Provided by Financing Activities                    95,184      279,085         374,269
                                                            --------     --------      ----------

Total Change in Cash                                         ($1,509)     $50,698         $49,189
                                                            =========    ========      ==========

Cash and Cash Equivalents                                       $776      $50,698         $51,474
Working Capital                                               43,900       94,749         138,649
Restricted Investments included in working capital            41,038           --          41,038



(1) As noted above, the twelve month period ended December 31, 1999 includes the
results  of XM  Radio  from  July  7,  1999.  Results  prior  to that  were  not
consolidated.

The $4.9  million  decrease in cash used in  operating  activities  for the core
business was  primarily  attributable  to (i) increased  operating  losses as we
incurred  additional  expenses to operate the  network and  increase  our market
awareness,  (ii) increased cash interest expense on our bank facility, and (iii)
the  timing  of  payments  on  accounts  payable,  offset by (i)  proceeds  from
Satellite  Ventures for the prepaid  Research and  Development  Agreement,  (ii)
proceeds from Aether for the prepaid license and service agreements, and (iii) a
net decrease in inventory purchases.


                                      F-15


Excluding $10.8 million  representing the amount of the proceeds received in the
Satellite  Ventures  transaction  allocated to the sale of the satellite assets,
and the $20 million  received from the sale of the  transportation  assets,  the
$16.0 million increase in cash used in investing activities of the core business
was primarily  attributable  to the purchase of the XM Radio Note  Receivable in
1999,  offset by higher  payments in 2000 for property and equipment,  including
$3.8 million for the acquisition of new frequencies.

The $50.9 million decrease in cash provided by financing  activities in the core
business was a result of (i) $116.6  million  reduction  in proceeds  from stock
issuances and warrant exercises, (ii) the proceeds received from a related party
in 1999 of $21.5  million,  and (iii) $6.0  million in proceeds in 1999 from the
partial  cancellation of the interest rate swap, offset by (ii) $73.3 million in
net bank financings and (ii) proceeds of $18.6 million  representing the portion
of the proceeds received in the Satellite Ventures transaction  allocated to the
investors'  option to  convert  to Motient  Common  Stock.  None of the cash and
working capital held by XM Radio is available for our use.

Other

All of our wholly owned  subsidiaries  are subject to financing  agreements that
limit the amount of cash  dividends  and loans that can be  advanced  to Motient
Parent.  At  December  31,  2000,  all  of the  subsidiaries'  net  assets  were
restricted under these agreements. These restrictions will have an impact on our
ability to pay dividends.


Regulation

The  ownership  and  operations  of our  communication  systems  are  subject to
significant  regulation by the FCC,  which acts under  authority  granted by the
Communications Act of 1934, as amended (the  "Communications  Act"), and related
federal  laws.  A number of our  licenses are subject to renewal by the FCC and,
with respect to our satellite operations, are subject to international frequency
coordination. In addition, current FCC regulations generally limit the ownership
and control of Motient by non-U.S. citizens or entities to 25%. We cannot assure
that  the  rules  and  regulations  of the FCC  will  continue  to  support  our
operations  as  presently  conducted  and  contemplated  to be  conducted in the
future, or that all existing licenses will be renewed and requisite  frequencies
coordinated.

As described in greater detail in "Item 1. Business -- Regulation",  on November
30, 1999, the FCC granted two applications to use TMI's Canadian-licensed system
to provide service in the United States to up to 125,000 mobile terminals. TMI's
system operates in the MSS L-band and has a satellite  footprint that covers the
United States.  We appealed the FCC's grant of these  applications to the United
States  Court of Appeals for the D.C.  Circuit,  but the court  upheld the FCC's
grant. TMI's entry into the domestic U.S.  marketplace may increase TMI's demand
for spectrum in the  international  coordination  process and otherwise  make it
more difficult for us to secure access to 20 MHz of spectrum.  Since the initial
grant to use TMI's system, the FCC has granted an additional  application to use
TMI's system and may grant others.

On January 16, 2001, we amended our pending  application  with the FCC to launch
and operate a second-generation  mobile satellite system in numerous respects to
seek FCC approval for the transactions  involving Satellite Ventures,  including
the combination of our satellite  communications business with TMI. See "Item 1.
Business - Recent Developments - Mobile Satellite Ventures LLC."


Accounting Standards

In September  1998, the Financial  Accounting  Standards  Board ("FASB")  issued
Statement  No.  133,   "Accounting   for  Derivative   Instruments  and  Hedging
Activities,"  ("SFAS No. 133") which requires the recognition of all derivatives
as either  assets or  liabilities  measured at fair value.  This  statement  was
originally  effective for the year ended  December 31, 2000. In September  1999,
FASB issued Statement No. 137, which deferred the effective date of SFAS No. 133
until fiscal years beginning after September 15, 2000. In June 2000, FASB issued
Statement No. 138,  "Accounting for Certain  Derivative  Instruments and Certain
Hedging  Activities," which amends SFAS No. 133. This Statement limits the scope
to certain  derivatives and hedging  activities.  The effective date of SFAS No.
138 is for fiscal years  beginning  after  September 15, 2000. We do not believe
that the  adoption  of these  statements  will  have a  material  impact  on our
financial position, results of operations and cash flows.

In December 1999,  the SEC issued Staff  Accounting  Bulletin No. 101,  "Revenue
Recognition"  ("SAB  101").  SAB  101  provides  guidance  on  the  recognition,
presentation, and disclosure of revenue in financial statements. The adoption of
SAB 101 did not have a material  impact on our financial  statements and results
of operations.

                                      F-16


In March  2000,  FASB  issued  Interpretation  No. 44,  "Accounting  for Certain
Transactions  Involving Stock  Compensation"  ("FIN 44"). FIN 44 further defines
the accounting consequence of various modifications to the terms of a previously
fixed stock option or award under Accounting Principles Bulletin ("APB") Opinion
No. 25,  "Accounting for Stock Issued to Employees." FIN 44 became  effective on
July 1, 2000,  but  certain  conclusions  in FIN 44 cover  specific  events that
occurred  after either  December  15, 1998 or January 12,  2000.  Both we and XM
Radio  adopted FIN 44 in 2000.  The effects of  implementing  FIN 44 required XM
Radio to  recognize  additional  non-cash  compensation  during  the year  ended
December 31, 2000, of approximately  $1.2 million  associated with stock options
that had been  repriced  during the period  covered by FIN 44, and we recognized
additional  non-cash  compensation of approximately $1.0 million associated with
the transfer of employees to Aether.  Additional compensation charges may result
depending upon the market value of the common stock at each balance sheet date.



Other Matters

As previously  reported,  the satellite  has, in the past,  experienced  certain
technological  anomalies,  and there can be no assurance that the satellite will
not experience  subsequent  anomalies that could adversely  impact our financial
condition,  results of operations and cash flows.  See "Part I, Item 1. Business
- -- Our Network".


       Item 3. Quantitative and Qualitative Disclosures about Market Risk

Quantitative and Qualitative Disclosures about Market Risk

We are exposed to the impact of interest  rate  changes  related to our variable
rate  credit  facilities.  We manage  interest  rate risk  through  the use of a
combination  of fixed and variable rate debt. We have minimal cash flow exposure
due to  general  interest  rate  changes  for our  fixed  rate,  long-term  debt
obligations. We invest our cash in short-term commercial paper, investment-grade
corporate and government obligations and money market funds.

Under our bank financings,  interest is paid generally at 100 basis points above
LIBOR.  The  exposure  to  interest  rate  fluctuations  is limited  because the
interest  rate paid on a monthly  basis is variable and based on current  market
conditions.  We have also entered into an interest  rate swap  agreement,  which
expires in March 2001,  which reduces the impact of interest  rate  increases on
the term loan  facility.  Under this  agreement,  we receive an amount  equal to
LIBOR plus 50 basis points paid directly to the banks on a quarterly basis until
the swap  agreement  terminates  on September  30,  2001.  Our senior notes bear
interest at a fixed rate of 12 1/4%,  and XM Radio's  senior  secured notes bear
interest at a fixed rate of 14%. We run the risk that market  rates will decline
and the required payments will exceed those based on current market rates.

                                      F-17




                    Report of Independent Public Accountants


To Motient Corporation:

We  have  audited  the  accompanying  consolidated  balance  sheets  of  Motient
Corporation (a Delaware  Corporation) and Subsidiaries  (together the "Company")
as of December 31, 2000 and 1999,  and the related  consolidated  statements  of
operations,  stockholders' equity (deficit) and cash flows for each of the three
years in the period ended December 31, 2000. These financial  statements are the
responsibility of the Company's management.  Our responsibility is to express an
opinion on these financial  statements based on our audits. We did not audit the
financial statements of XM Satellite Radio Holdings Inc. and Subsidiaries, which
statements  reflect total assets and total  revenues of 79 percent and 0 percent
in 2000,  and 57 percent  and 0 percent in 1999,  respectively,  of the  related
consolidated  totals.  Those  statements  were audited by other  auditors  whose
report has been  furnished to us, and our opinion,  insofar as it relates to the
amounts included for XM Satellite Radio Holdings Inc. and subsidiaries, is based
solely on the report of the other auditors.

We conducted our audits in accordance with auditing standards generally accepted
in the United States.  Those standards require that we plan and perform an audit
to obtain reasonable  assurance about whether the financial  statements are free
of material misstatement. An audit includes examining, on a test basis, evidence
supporting  the amounts and  disclosures in the financial  statements.  An audit
also includes assessing the accounting principles used and significant estimates
made by  management,  as well as  evaluating  the  overall  financial  statement
presentation.  We  believe  that our  audits  and the  report of other  auditors
provide a reasonable basis for our opinion.

In our  opinion,  based on our  audits  and the  report of other  auditors,  the
financial statements referred to above present fairly, in all material respects,
the financial  position of Motient  Corporation and  Subsidiaries as of December
31, 2000 and 1999, and the results of their  operations and their cash flows for
each of the three years in the period ended  December 31,  2000,  in  conformity
with accounting principles generally accepted in the United States.

The  accompanying  financial  statements  have been  prepared  assuming that the
Company  will  continue  as a  going  concern.  As  discussed  in  Note 1 to the
financial statements,  the Company has suffered recurring losses from operations
and has a net tangible capital  deficiency that raises  substantial  doubt about
its  ability to  continue as a going  concern.  Management's  plans in regard to
these  matters are also  described in Note 1. The  financial  statements  do not
include any adjustments  relating to the  recoverability  and  classification of
asset carrying  amounts or the amount and  classification  of  liabilities  that
might result should the Company be unable to continue as a going concern.

/s/Arthur Andersen LLP
Vienna, Virginia
April 2, 2001

                                      F-18




                          INDEPENDENT AUDITORS' REPORT

To the Board of Directors and Stockholders
XM Satellite Radio Holdings Inc. and Subsidiaries:

We have audited the  consolidated  balance sheets of XM Satellite Radio Holdings
Inc. and  subsidiaries  (a  development  stage  company)  (the  "Company") as of
December  31,  1999  and  2000,  and  the  related  consolidated  statements  of
operations, stockholders' equity (deficit), and cash flows for each of the years
in the  three-year  period  ended  December  31,  2000,  and for the period from
December  15, 1992 (date of  inception)  to  December  31,  2000,  which are not
included herein. These consolidated  financial statements are the responsibility
of the  Company's  management.  Our  responsibility  is to express an opinion on
these consolidated financial statements based on our audits.

We conducted our audits in accordance with auditing standards generally accepted
in the  United  States of  America.  Those  standards  require  that we plan and
perform the audit to obtain  reasonable  assurance  about  whether the financial
statements are free of material misstatement.  An audit includes examining, on a
test basis,  evidence  supporting  the amounts and  disclosures in the financial
statements.  An audit also includes assessing the accounting principles used and
significant  estimates  made by  management,  as well as evaluating  the overall
financial  statement  presentation.   We  believe  that  our  audits  provide  a
reasonable basis for our opinion.

In our opinion, the consolidated  financial statements referred to above present
fairly, in all material  respects,  the financial position of XM Satellite Radio
Holdings Inc. and subsidiaries (a development  stage company) as of December 31,
1999 and 2000, and the results of their operations and their cash flows for each
of the years in the three-year period ended December 31, 2000 and for the period
from  December 15, 1992 (date of  inception) to December 31, 2000, in conformity
with accounting principles generally accepted in the United States of America.

The  consolidated  financial  statements  have been  prepared  assuming that the
Company  will  continue  as a  going  concern.  As  discussed  in note 10 to the
consolidated financial statements,  the Company has not commenced operations and
is dependent upon additional debt or equity financing,  which raises substantial
doubt about its ability to continue  as a going  concern.  Management's  plan in
regard to these matters is also described in note 10. The consolidated financial
statements do not include any adjustments  that might result from the outcome of
this uncertainty.

                                  /s/ KPMG LLP


McLean, VA
February 9, 2001


                                      F-19




                      Motient Corporation and Subsidiaries
                      Consolidated Statements of Operations
              For the Years Ended December 31, 2000, 1999 and 1998
                      (in thousands, except per share data)




                                                                                 2000        1999           1998
                                                                                 ----        ----           ----
         REVENUES
                                                                                             
            Services                                                           $73,479     $  67,653   $   57,994
            Sales of equipment                                                  26,372        23,418       29,227
                                                                              --------     ---------    ---------
            Total Revenues                                                      99,851        91,071       87,221

         COSTS AND EXPENSES
            Cost of service and operations                                      75,528        69,258       55,781
            Cost of equipment sold                                              32,843        29,527       30,449
            Sales and advertising                                               35,454        23,125       19,159
            General and administrative                                          97,626        40,336       17,332
            Satellite and related assets impairment charge (Note 2)                 --        97,419           --
            Depreciation and amortization                                       38,812        55,798       52,707
                                                                              --------     ---------    ---------

            Operating Loss                                                    (180,412)     (224,392)     (88,207)

            Interest and Other Income                                           31,379         8,464        4,372
            Interest Expense                                                   (62,455)      (65,928)     (53,771)
            Gain on sale of transportation assets (Note 13)                      5,691            --           --
            Loss on Note Receivable from XM Radio (Note 8)                          --        (9,919)          --
            Gain (Loss) on Note Payable to Related Party (Note 8)               36,779       (27,399)          --
            Minority Interest                                                   33,429         7,067           --
            Equity in Loss of XM Radio                                              --        (6,692)     (12,960)
                                                                              --------     ---------    ---------

            Loss Before Extraordinary Item, XM Radio Preferred Dividend       (135,589)     (318,799)    (150,566)
             and Beneficial Conversion

            Extraordinary Loss on Extinguishment of Debt                        (3,035)      (12,132)          --
                                                                              ---------    ---------    ---------

         Net Loss                                                             (138,624)     (330,931)    (150,566)

         XM Radio Preferred Stock Dividend Requirement                          (5,081)           --           --

         XM Radio Beneficial Conversion                                        (44,438)           --           --
                                                                              ---------   ----------   ----------

         Net Loss Attributable to Common Shareholders                        $(188,143)   $(330,931)    $(150,566)
                                                                              ==========   =========     ==========

         Basic and Diluted Loss Per Share of Common Stock:
            Loss Before Extraordinary Item                                      $(3.75)   $   (8.03)  $     (4.94)
            Extraordinary Loss on Extinguishment of Debt                         (0.06)       (0.30)           --
                                                                              ----------------------- -----------

            Net Loss Attributable to Common Shareholders                        $(3.81)   $   (8.33)  $     (4.94)
                                                                              ==========   ==========   ==========
         Weighted-Average Common Shares Outstanding                             49,425        39,704       30,496


The  accompanying  notes are an integral  part of these  consolidated  financial
statements.

                                      F-20





                      Motient Corporation and Subsidiaries
                           Consolidated Balance Sheets
                        as of December 31, 2000 and 1999
                 (in thousands, except share and per share data)



                                                                                                     2000            1999
                                                                                                     ----            ----
        ASSETS
        CURRENT ASSETS:
                                                                                                          
           Cash and cash equivalents (including $224,903 and $50,698 related to XM Radio)         $227,423      $ 51,474
           Short-term investments                                                                       --        69,472
           Accounts receivable-trade, net of allowance for doubtful accounts of $1,317 in
           2000 and $1,225 in 1999                                                                  14,421        16,594
           Inventory                                                                                16,990        28,616
           Restricted short-term investments (including $95,277 and $0 related to XM Radio)        115,986        41,038
           Due from Mobile Satellite Ventures                                                          502            --
           Other current assets                                                                     31,095        13,100
                                                                                                 ---------      --------
              Total current assets                                                                 406,417       220,294
        PROPERTY AND EQUIPMENT, net (gross balances include $152,846 and $143,152
        purchased from related parties through 2000 and 1999, respectively)                        175,706       116,516
        XM RADIO SYSTEM UNDER CONSTRUCTION                                                         800,482       357,278
        GOODWILL AND OTHER INTANGIBLES, net                                                         62,468        62,211
        RESTRICTED INVESTMENTS (including $65,889 and $0 related to XM Radio)                       77,106        31,109
        DEFERRED CHARGES AND OTHER ASSETS, net of accumulated amortization of  $11,088 in 2000
        and $18,280 in 1999                                                                         49,535        22,540
                                                                                                 ---------      --------
              Total assets                                                                      $1,571,714      $809,948
                                                                                                ==========      ========


The  accompanying  notes are an integral  part of these  consolidated  financial
statements.

                                      F-21










        LIABILITIES AND STOCKHOLDERS' EQUITY (DEFICIT)
        CURRENT LIABILITIES:
                                                                                                   
           Accounts payable and accrued expenses                                              $105,749     $67,885
           Obligations under capital leases due within one year                                  4,590       6,154
           Current portion of vendor financing commitment due to related party                   4,246       1,977
           Current portion of deferred trade payables                                            2,212       3,983
           Deferred revenue and other current liabilities (including $7,300 in
           2000 from Mobile Satellite Ventures)                                                 18,117       1,646
                                                                                              --------     -------
              Total current liabilities                                                        134,914      81,645
        LONG-TERM LIABILITIES:
           Obligations under Senior Notes, net of discount                                     328,474     327,576
           Senior Secured Notes of XM Radio, net of discount                                   261,298          --
           Obligations under  Bank Financing                                                   111,250      85,000
           Capital lease obligations                                                             9,230         247
           Net assets acquired in excess of purchase price                                          --       1,333
           Vendor financing commitment due to related party                                      4,246       2,535
           Convertible note payable due to related party, at fair value                             --      50,138
           Other long-term liabilities                                                          61,105       3,955
                                                                                               -------     -------
              Total long-term liabilities                                                      775,603     470,784
              Total liabilities                                                                910,517     552,429
                                                                                              --------    --------
        COMMITMENTS (Note 11)
        MINORITY INTEREST                                                                      648,313     274,745
        STOCKHOLDERS' EQUITY (DEFICIT):
        Preferred Stock; par value $0.01; authorized 200,000 shares; no shares
        outstanding                                                                                 --          --
        Common Stock; voting, par value $0.01; authorized 150,000,000 shares;
        49,539,222 shares issued and  outstanding  in 2000 and 48,539,316 shares
        issued and outstanding in 1999                                                             495         485
        Additional paid-in capital                                                             982,621     844,181
        Deferred compensation                                                                     (134)     (6,536)
        Common Stock Purchase Warrants                                                          80,292      63,290
        Unamortized Guarantee Warrants                                                         (11,504)    (18,384)
        Cumulative loss                                                                     (1,038,886)   (900,262)
                                                                                            -----------   ---------
        STOCKHOLDERS' EQUITY (DEFICIT)                                                          12,884     (17,226)
                                                                                              ---------   ---------
        Total liabilities, minority interest, and stockholders' equity (deficit)             $1,571,714   $809,948
                                                                                             ==========  =========

The  accompanying  notes are an integral  part of these  consolidated  financial
statements.


                                      F-22




                      Motient Corporation and Subsidiaries

            Consolidated Statements of Stockholders' Equity (Deficit)
          for the period from December 31, 1997 through December 31, 2000
                             (dollars in thousands)



                                                                                   Common
                                                         Additional                  Stock    Unamortized
                                     Common       Par     Paid-In      Deferred    Purchase    Guarantee   Cumulative
                                  Stock Shares   Value    Capital    Compensation  Warrants    Warrants       Loss        Total
                                  ------------   -----    -------    ------------  --------    --------       ----        -----
                                                                                               
  BALANCE, December 31, 1997       25,159,311    $252    $451,892     $   --       $36,338    $ (23,586)    $(418,765)    $ 46,131
    Common Stock issued under
    the 401(k) Savings Plan           105,089       1         847         --            --           --           --           848
    Common Stock issued under
    the Stock Purchase Plan            47,011      --         278         --            --           --           --           278
    Common Stock issued for
    Motient Communications          6,520,532      65      49,716         --            --           --           --        49,781
    Acquisition
    Common Stock issued for
    exercise of stock options
    and award of bonus stock           10,681      --         135         --            --           --           --           135
    Issuance of Stock Purchase
    Warrants pursuant to                   --      --          --         --         8,490           --           --         8,490
    Notes financing
    Issuance of Restricted Stock      356,111       4       1,776     (1,780)           --           --           --            --
    Amortization of compensation
    expense                                --      --          --        252            --           --           --           252
    Guarantee Warrants revaluation         --      --          --         --        17,720      (17,720)          --            --
    Amortization of Guarantee
    Warrants                               --      --          --         --            --        7,628           --         7,628
    Expiration of Stock Purchase
    Warrants                               --      --       3,440         --        (3,440)          --           --            --
    Net Loss                               --      --          --         --            --           --     (150,566)     (150,566)
                                   ----------    ----    --------     -------      -------     --------     --------    ----------
  BALANCE, December 31, 1998       32,198,735     322     508,084     (1,528)       59,108      (33,678)    (569,331)      (37,023)
    Common Stock issued under the
    401(k) Savings Plan               126,052       1       1,114         --            --           --           --         1,115
    Common Stock issued under the
    Stock Purchase Plan                90,867       1         385         --            --           --           --           386
    Common Stock issued for
    exercise of stock options
    and award of bonus stock          484,815       5       5,686         --            --           --           --         5,691

    Common Stock issued for
    XM Radio Acquisition            8,614,244      86     129,127         --            --           --           --       129,213
    Common Stock issued in
    Public Offering                 7,000,000      70     115,919         --            --           --           --       115,989
    Issuance of Restricted Stock       40,000      --         190       (190)           --           --           --            --
    Cancellation of Restricted
    Stock                             (30,785)     --        (504)       504            --           --           --            --
    Additional deferred
    compensation on Restricted
    Stock                                  --      --       5,322     (5,322)           --           --           --            --
    Reduction of Guarantee Warrants
    for extinguishment of debt             --      --          --         --            --        9,671           --         9,671
    Amortization of Guarantee
    Warrants                               --      --          --         --            --        7,372           --         7,372
    Common Stock issued upon
    exercise of Warrants               15,388      --         296         --          (108)          --           --           188
    Guarantee Warrants revaluation         --      --      (2,101)        --         4,290       (1,749)          --           440
    Capital gain in connection
    with sale of stock by XM Radio         --      --      80,663         --            --           --           --        80,663

    Net Loss                               --      --          --         --            --           --     (330,931)     (330,931)
                                    ----------    ---     -------     -------       -------     --------    --------    ----------
  BALANCE, December 31, 1999        48,539,316    485     844,181     (6,536)       63,290      (18,384)    (900,262)      (17,226)
    Common Stock issued under
    the 401(k) Savings Plan             57,030      1       1,130         --            --           --           --         1,131
    Common Stock issued under the
    Stock Purchase Plan                 30,687     --         421         --            --           --           --           421
    Common Stock issued for
    exercise of stock options
    and award of bonus stock           403,467      4       4,445         --            --           --           --         4,449
    Common Stock issued for
    exercise of stock purchase         558,722      6       8,349         --        (7,611)          --           --           744
    warrants
    Cancellation of Restricted
    Stock                              (50,000)    (1)     (1,052)     1,053            --           --           --            --
    Change in deferred compensation
    on non-cash                             --     --      (4,398)     5,349            --           --           --           951
    compensation
    Reduction of Guarantee Warrants
    for extinguishment of debt              --     --          --         --            --        2,390           --         2,390
    Amortization of Guarantee
    Warrants                                --     --          --         --            --        5,842           --         5,842
    Capital gain in connection with
    sale of stock by XM Radio               --     --     129,545         --            --           --           --       129,545
    Issuance of Mobile Satellite
    Ventures investors' option to
    convert into Motient Common Stock       --     --          --         --        18,411           --           --        18,411
    Guarantee Warrants revaluation          --     --          --         --         1,352       (1,352)          --            --
    Issuance of Common Stock
    Purchase Warrants                       --     --          --         --         4,850           --           --         4,850
    Net Loss                                --     --          --         --            --           --     (138,624)     (138,624)
                                    ----------   ----    --------     ------      --------    ---------    ---------    -----------
  BALANCE, December 31, 2000        49,539,222   $495    $982,621      $(134)      $80,292     $(11,504) $(1,038,886)      $12,884
                                    ==========   ====    ========     =======     ========    ==========  ===========   ===========

The  accompanying  notes are an integral  part of these  consolidated  financial
statements.



                                      F-23


                      Motient Corporation and Subsidiaries
                      Consolidated Statements of Cash Flows
              For the Years Ended December 31, 2000, 1999 and 1998
                                 (in thousands)



                                                                                 2000           1999            1998
                                                                                 ----           ----            ----
             CASH FLOWS FROM OPERATING ACTIVITIES:
                                                                                                  
             Net loss                                                        $(138,624)     $ (330,931)    $ (150,566)
             Adjustments to reconcile net loss to net cash used in
             operating activities:
                Amortization of Guarantee Warrants and debt related costs       11,994          16,301         16,171
                Depreciation and amortization                                   38,812          55,798         52,707
                Equity in loss of XM Radio                                          --           6,692         12,960
                Gain on sale of transportation assets                           (5,691)             --             --
                (Gain) loss on  note payable to related party                  (36,779)         37,318             --
                Extraordinary loss on extinguishment of debt                     3,035          12,132             --
                Satellite and related assets impairment charge                      --          97,419             --
                Non cash stock compensation of XM Radio                          2,743           4,210             --
                Minority Interest                                              (33,429)         (7,067)            --
                Changes in assets and liabilities, net of acquisitions
                and dispositions:
                 Inventory                                                       1,298         (10,023)        21,947
                 Accounts receivable-- trade                                     1,388          (3,897)          (105)
                 Other current assets                                          (15,074)            551          8,423
                 Accounts payable and accrued expenses                          13,392          16,715        (14,472)
                 Accrued interest Senior Note                                       31             (83)        10,715
                 Deferred trade payables                                        (2,455)         (1,135)        (6,567)
                 Deferred revenue and other deferred items-- net                32,977            (977)        (7,396)
                                                                             ---------             ---     ----------
                 Net cash used in operating activities                        (126,382)       (106,977)       (56,183)
             CASH FLOWS FROM INVESTING ACTIVITIES:
                 Cash paid for acquisition of Motient Communications                --              --        (52,373)
                 Purchase of XM Radio Note Receivable                               --         (21,419)            --
                 Proceeds from sale of transportation assets                    20,000              --             --
                 Purchase of restricted investments                             (2,906)         (4,916)      (145,761)
                 Purchase/maturity of restricted investments by XM Radio,
                 net                                                          (106,338)             --             --
                 Sale of restricted investments for the payment of
                 interest                                                       41,006          41,006         20,633
                 Investment in XM Radio                                             --          (2,400)            --
                 XM Radio Acquisition costs                                         --            (788)            --
                 Purchase/maturity of short term investments by XM Radio,
                 net                                                            69,472         (69,472)            --
                 System under construction                                    (414,889)       (141,154)            --
                 Proceeds from Mobile Satellite Ventures Asset
                 Purchase Agreement                                             10,836              --             --
                 Other XM Radio investing activities                           (56,268)         (3,422)            --
                 Additions to property and equipment                           (73,564)        (15,538)       (12,470)
                                                                             ---------      ----------     ----------
                 Net cash used in investing activities                        (512,651)       (218,103)      (189,971)
             CASH FLOWS FROM FINANCING ACTIVITIES:
                 Proceeds from issuance of equity securities                    24,025         122,253            412
                 Proceeds from issuance of equity securities-XM Radio          456,529         114,428             --
                 Proceeds from Senior Secured Notes and Stock Purchases
                 Warrants issued by XM Radio                                   322,889              --             --
                 Proceeds from Notes and Stock Purchase Warrants                    --              --        335,000
                 Principal payments under capital leases                        (3,467)         (5,982)        (3,395)
                 Principal payments under Vendor Financing                      (2,957)         (1,290)           (16)
                 Proceeds from Series A subordinated convertible notes of
                 XM Radio                                                           --         250,000             --
                 Repayment of note payable to related party                         --              --        (10,000)
                 Repayment of Bank Financing                                        --              --       (100,000)
                 Repayment of XM Radio bank loan                                    --             (73)            --
                 Repayment of loan by XM Radio                                      --         (75,000)            --
                 Repayment of Term Loan                                         (1,000)        (59,000)            --
                 Repayments of Revolver                                        (35,000)        (53,000)            --
                 Proceeds from Bank Financing                                   62,250          65,000         34,000
                 Proceeds from note payable to related party                        --          21,500         10,000
                 Proceeds from reduction of interest rate swap                      --           6,009             --
                 Payments on long-term debt                                         --              --         (4,933)
                 Debt issuance costs                                            (8,287)        (10,576)       (14,735)
                                                                             ---------      ----------     ----------
             Net cash provided by financing activities                         814,982         374,269        246,333
             Net increase in cash and cash equivalents                         175,949          49,189            179
             CASH AND CASH EQUIVALENTS, beginning of period                     51,474           2,285          2,106
                                                                             ---------      ----------     ----------
             CASH AND CASH EQUIVALENTS, end of period                        $ 227,423      $   51,474     $    2,285
                                                                             =========      ==========     ==========

The  accompanying  notes are an integral  part of these  consolidated  financial
statements.


                                      F-24





                      MOTIENT CORPORATION AND SUBSIDIARIES

                   Notes to Consolidated Financial Statements
                     as of December 31, 2000, 1999 and 1998

1.  ORGANIZATION, BUSINESS AND LIQUIDITY

Motient  Corporation  (with its  subsidiaries,  "Motient" or the "Company") is a
leading  provider  of two-way  mobile  communications  services  principally  to
business-to-business  customers  and  enterprises.  Motient  serves a variety of
markets  including  mobile  professionals,   telemetry,   transportation,  field
service,  and  nationwide  voice  dispatch,  to customers in the United  States.
Motient  provides  its  eLink(sm)  brand  two-way  wireless  email  services  to
customers accessing email through corporate servers,  Internet Service Providers
("ISP"),  Mail Service Provider ("MSP") accounts,  and paging network suppliers.
In November 2000,  Motient launched its BlackBerry(tm) by Motient wireless email
solution,  developed  by Research in Motion  ("RIM") and  licensed to operate on
Motient's  network.  BlackBerry(tm)  by Motient is designed for large  corporate
accounts  operating in a Microsoft  Exchange  environment and contains  advanced
encryption  features.  Together,  the Company  considers  these  two-way  mobile
communications services to be its Core Wireless Business.

Additionally,  as of  December  31,  2000,  Motient  had an equity  interest  of
approximately  33.1% (or 21.3% on a fully diluted  basis) in XM Satellite  Radio
Holdings Inc. ("XM Radio"),  a public company;  and, as of December 31, 2000 the
Company  controlled  XM Radio through  Board of Director  membership  and common
stock voting rights. As a result,  all of XM Radio's results for the period from
July 7,  1999 (the date  Motient  acquired  100%  voting  interest  of XM Radio)
through  December  31,  2000 have been  included in the  Company's  consolidated
financial  statements.  Prior to July 7, 1999,  the  Company's  investment in XM
Radio was accounted for pursuant to the equity method of accounting. See Note 13
- -- Business Acquisitions and Dispositions.

XM Radio was  incorporated  on December  15, 1992 for the purpose of procuring a
digital audio radio service license.  XM Radio's management has devoted its time
primarily to securing  financing and constructing its satellite system. XM Radio
launched its first  satellite on March 18, 2001.  XM Radio has not generated any
revenues to date and the planned principal operations have not yet commenced.

In January 2001, pursuant to Federal Communications  Commission ("FCC") approval
authorizing  Motient to relinquish  control of XM Radio, the number of directors
appointed by the Company to XM Radio's  Board of  Directors  was reduced to less
than 50% of XM Radio's  directors,  and the  Company  converted a portion of its
super-voting  Class B Common  Stock of XM  Radio to Class A Common  Stock.  As a
result,  the  Company  ceased to  control  XM Radio,  and will  account  for its
investment in XM Radio  pursuant to the equity method,  effective  January 2001.
The  carrying  value of the  Company's  investment  in XM Radio  pursuant to the
equity  method of  accounting  was $288,064 (or $17.19 per share) as of December
31, 2000.  As of March 29,  2001,  the market price of XM Radio common stock was
$7.00 per  share,  $10.19  per share  less than the  Company's  carrying  value.
Pursuant to the equity method of accounting, beginning in 2001, the Company will
be required to assess, considering market and other appropriate factors, whether
a permanent  impairment of the Company's investment in XM Radio has occurred and
whether an impairment loss is recognized.

The  operations  and financing of XM Radio,  a public  company,  are  maintained
separate and apart from the operations and financing of Motient.

See Footnote 17 for the Company's consolidating financial statements.

On June  29,  2000,  the  Company  formed  a joint  venture  subsidiary,  Mobile
Satellite Ventures LLC ("Satellite Ventures"),  in which the Company owns 80% of
the membership  interests.  The remaining 20% interest in Satellite  Ventures is
owned by a group of three  investors  which paid an  aggregate of $50 million in
exchange  for  their  20%  interest.  See Note 13 -  Business  Acquisitions  and
Dispositions.  Although the Company has an 80%  interest in Satellite  Ventures,
the minority investors have certain participative rights which provide for their
participation in certain business  decisions  effecting  Satellite Ventures that
may be made in the normal  course of business;  therefore,  in  accordance  with
Emerging  Issues Task Force No. 96-16,  "Investor's  Accounting  for an Investee
when the  Investor  has a Majority  of the  Voting  Interest,  but the  Minority
Shareholder  or Holders Have  Certain  Approval or Veto  Rights," the  Company's
investment  in Satellite  Ventures is recorded  pursuant to the equity method of
accounting.

On November  29,  2000,  the Company  sold its retail  transportation  assets to
Aether  Systems,  Inc.  ("Aether").  Aether  purchased  all of the assets in the
Company's  wireless  communications  business  for  the  transportation  market,
including  its   satellite-only   MobileMAX2(tm)   multi-mode  mobile  messaging
business,  and Aether  assumed  all  liabilities  related to the  transportation
business.  In addition,  Aether entered into separate  long-term prepaid airtime
agreements  with  the  Company.   See  Note  13  -  Business   Acquisitions  and
Dispositions.

Motient is devoting its efforts to expanding its business.  This effort involves
substantial  risk.  Specifically,  future  operating  results will be subject to
significant  business,   economic,   regulatory,   technical,   and  competitive
uncertainties  and  contingencies.  Depending on their extent and timing,  these
factors,  individually or in the aggregate,  could have an adverse effect on the
Company's financial condition and future results of operations.

                                      F-25


Liquidity and Financing Requirements

Adequate  liquidity and capital are critical to Motient's ability to continue as
a going concern and to fund subscriber acquisition programs necessary to achieve
positive cash flow and profitable operations. The Company expects to continue to
make significant capital outlays to fund interest expense, new product rollouts,
capital  expenditures and working capital before it begins to generate  positive
cash flow from operations. The Company expects these outlays to continue for the
foreseeable future.

Summary of Liquidity and Financing Sources for Core Wireless Business

The Company's  current  operating  assumptions and projections  reflect its best
estimate  of  subscriber  and revenue  growth and  operating  expenses.  Motient
anticipates that capital  expenditures,  operating  losses,  working capital and
debt  service  requirements  through  2001 can be met by (i) cash on hand,  (ii)
borrowings  available  under its bank  financing  and  vendor  financing,  (iii)
proceeds realized through the sale of inventory relating to eLink and BlackBerry
TM, (iv)  reduction of operating  expenditures,  (v)  additional  debt or equity
financing transactions,  and (vi) its investment in XM Radio. Additionally,  the
Company  has  the  potential  to  receive   additional  funds  from  the  Aether
transaction  as well  as the  Satellite  Ventures  transaction  - see  Note 13 -
Acquisitions  and Dispositions  and Note 16 - Subsequent  Events.  The Company's
financial results could deteriorate,  and its ability to meet its projections is
subject to numerous  uncertainties.  There can be no assurance  that the current
projections  will be achieved.  If  Motient's  cash  requirements  are more than
projected,  it  will  require  additional  financing  in  amounts  which  may be
material.  The type, timing and terms of financing that the Company selects will
be dependent upon the Company's cash needs,  the availability of other financing
sources and the  prevailing  conditions  in the financial  markets.  The Company
cannot  guarantee  that  additional  financing  sources will be available at any
given time or available on favorable terms.

The Company's  consolidated  financial  statements have been prepared on a going
concern basis,  which contemplates the realization of assets and satisfaction of
liabilities in the normal course of business.  The successful  implementation of
the  Company's   business  plan  requires   substantial  funds  to  finance  the
maintenance  and growth of its  operations,  network and subscriber  base and to
expand  into  new  markets.  The  Company  has an  accumulated  deficit  and has
historically  incurred losses from operations which are expected to continue for
additional periods in the future.  There can be no assurance that its operations
will  become  profitable.  These  factors,  along  with the  Company's  negative
operating  cash  flows  have  placed  significant  pressures  on  the  Company's
financial condition and liquidity  position,  and create substantial doubt about
the Company's ability to continue as a going concern. The accompanying financial
statements do not include any  adjustments  relating to the possible  effects on
the recoverability and classification of assets or amounts and classification of
liabilities  that might be necessary should the Company be unable to continue as
a going concern.

In January and February 2001, the Company sold, in two separate transactions,  2
million  shares of its XM Radio  Class A Common  Stock,  at an average  price of
$16.77  per share,  for total  proceeds  of $33.5  million.  Approximately  $8.5
million  of the  proceeds  were used to repay and  permanently  reduce  the Term
Facility.  In  exchange  for the  Guarantors  agreeing  to  waive  certain  debt
repayment  obligations  for the  second  sale of  shares,  the  Company  and the
Guarantors  have agreed that the first $16.5  million of proceeds  received from
the earlier of (i) the closing of the Satellite  Ventures  transaction  and (ii)
any other stated  reduction  event to occur in the year 2002 will be used to pay
down the bank financing.


On April 2, 2001,  Motient entered into an agreement for financing in the amount
of $25  million  from Rare  Medium  Group,  Inc.  ("Rare") in the form of a note
payable  at 12.5%  annual  interest  with a  maturity  date,  subject to certain
mutually-agreed upon extensions,  of 180 days from funding, which is expected to
occur by April 6, 2001.  Additionally,  the Company has the potential to receive
up to an additional $25 million of funding,  on comparable  terms, the amount of
which  will be  based on the  market  price of XM Radio  stock.  The  notes  are
collateralized by up to 5 million of the Company's XM Radio shares, and Rare has
the option to exchange the notes for a number of XM Radio shares  equivalent  to
the principal of the note plus any accrued  interest  thereon.  Of the first $25
million  received by the  Company,  the Company  used $6.1  million to repay and
permanently   reduce  its  Term   Facility  and  $14.4  million  is  subject  to
availability upon the approval of the Guarantors.

As of March 30, 2001, the Company held  approximately  14.7 million shares of XM
Radio stock;  however,  approximately 13.7 million of such shares are pledged to
and held by Rare or the Company's  banks and  guarantors to secure the Company's
obligations  under its bank  financings  and the notes  with  Rare.  There is no
guarantee  that the banks and  guarantors  would agree to release any portion of
their share of this  security to permit the  Company to  liquidate  its XM Radio
shares,  or that  such  approval  would be on terms  favorable  to the  Company.
Further,  the  Company's  ability  to sell its  shares of XM Radio  stock in the
public markets is generally limited to the quarterly volume  restrictions  under
Rule 144 of the Securities Act.


2. SIGNIFICANT ACCOUNTING POLICIES

Accounting Estimates

The preparation of financial  statements in conformity  with generally  accepted
accounting  principles  ("GAAP")  requires  management  to  make  estimates  and
assumptions  that affect the reported  amount of assets and  liabilities  at the
date of the  financial  statements  and the  reported  amounts of  revenues  and
expenses  during the reporting  period.  Actual  results could differ from those
estimates.  The Company's most significant  estimates relate to the valuation of
inventory, the allowance for doubtful accounts receivable, and the realizability
of long-lived assets.

Consolidation

The  consolidated  financial  statements  include the  accounts of Motient,  its
wholly  owned  subsidiaries,   and  XM  Radio.  All  significant   inter-company
transactions and accounts have been eliminated.

                                      F-26


Cash Equivalents

The Company considers highly liquid  investments with remaining  maturities of 3
months or less at the time of acquisition to be cash equivalents.

Short-Term Investments

At December 31, 1999, XM Radio held commercial paper with maturity dates of less
than one year which were recorded at amortized  cost,  which  approximated  fair
value.

Restricted Investments

Restricted  investments  represent those investments made by the Company to fund
customer   obligations,   milestone   payments   under  certain  of  XM  Radio's
construction  contracts,  certificates  of deposit to  collateralize  letters of
credit required by facility leases,  or required  interest  payments  associated
with the Senior  Notes and XM  Radio's  Senior  Secured  Notes.  The  securities
included in  restricted  investments  which are required to be used for interest
payments  under  the  Senior  Notes  and XM  Radio's  Senior  Secured  Notes are
classified as  held-to-maturity  securities under the provisions of Statement of
Financial  Accounting  Standards  ("SFAS")  No.  115,  "Accounting  for  Certain
Investments in Debt and Equity  Securities." The Company  classifies  restricted
investment  amounts which will mature  within one year as current  assets in the
accompanying  balance  sheet.  The Company  accounts  for these  investments  at
amortized cost.

Inventories

Inventories, which consist primarily of communication devices, are stated at the
lower of cost or market.  Cost is  determined  using the  weighted  average cost
method.  The Company  periodically  assesses the market value of its  inventory,
based on sales  trends and  forecasts  and  technological  changes and records a
charge to current  period income when such factors  indicate that a reduction to
net realizable value is appropriate. Management considers both inventory on hand
and inventory which it has committed to purchase. The Company recorded inventory
write-downs to cost of equipment sold to reduce  inventory  amounts to their net
realizable  value,  in the amount of $3.6 million in 2000, $4.2 million in 1999,
and $0 in 1998.

The Company's eLink and Blackberry(tm) by Motient wireless services use handheld
devices manufactured by Research in Motion ("RIM"). RIM also manufactures modems
designed to be integrated  into mobile  terminals  manufactured by other vendors
and used for other  wireless  communications  services sold by the Company.  The
Company's supply  arrangements with RIM are not exclusive,  and RIM manufactures
similar  hardware  products for other  companies.  There are a limited number of
manufacturers of similar wireless  devices,  and a change in suppliers or delays
in  deliveries  from RIM could  result in loss of sales  which  would  adversely
effect operating results.

Other Current Assets

Other current assets consist of the following:



                                                                               December 31,
                                                                            2000        1999
                                                                            ----        ----
                                (in thousands)

                                                                              
                                Interest rate swap (Note 8)           $    611      $  2,445
                                Prepaid advertising                      5,162            --
                                Prepaid expenses                        17,711         8,333
                                Deposits                                   175         2,123
                                Non-trade receivables and other          7,436           199
                                                                      --------           ---
                                                                      $ 31,095      $ 13,100
                                                                      ========      ========


                                      F-27


Fair Value of Financial Instruments

SFAS No. 107, "Disclosures about Fair Value of Financial  Instruments," requires
disclosures  of the fair value of certain  financial  instruments.  The carrying
amount  for  cash  and  cash  equivalents,   short-term  investments,   accounts
receivable,  non-trade  receivables  included in other assets, lease receivables
included in non-current deferred charges and other assets,  accounts payable and
accrued expenses,  deferred trade payables and XM Radio accrued royalty payments
approximate fair value because of the short maturity of these  instruments.  The
fair value of the Senior Notes was  estimated  using quoted market  prices.  The
fair value of the interest  rate swap is the  estimated  amount that the Company
would receive to terminate  the swap  agreement  based on quoted market  prices,
taking into account current interest rates and the current  creditworthiness  of
the swap counter parties. As a result of the Guarantees associated with the Bank
Financing,  it is not  practicable  to estimate the fair value of this facility.
For debt issues that are not quoted on an  exchange,  interest  rates  currently
available to the Company for issuance of debt with similar  terms and  remaining
maturities are used to estimate fair value.




                                                       As of December 31, 2000      As of December 31, 1999
                                                       -----------------------      -----------------------
                                                        Carrying                    Carrying
                                                         Amount      Fair Value      Amount       Fair Value
             (in thousands)

             Assets:
                                                                                         
               Restricted investments                   $193,092       $192,627     $  72,147        $71,267
               Interest rate swap (Note 8)                   611            708         3,056          3,448
             Liabilities:
               Senior Notes                              328,474        111,681       327,576        274,700
               XM Radio Senior Secured Notes             261,298        179,563          --             --
               Vendor financing commitment                 8,492          8,492         4,512          4,512
               Capital leases                             13,820         13,820         6,401          6,401


Concentrations of Credit Risk

Financial instruments which potentially subject the Company to concentrations of
credit risk consist  principally  of cash,  short term  investments,  restricted
investments,  and accounts receivable. The Company periodically invests its cash
balances in temporary or overnight  investments.  The Company  invests its short
term  investments  and  restricted   investments  in  debt  securities  such  as
commercial paper, time deposits,  certificates of deposit,  bankers acceptances,
and marketable direct  obligations of the United States Treasury.  The Company's
intent is to hold its investments in debt securities to maturity.

To date,  the  majority  of the  Company's  business  has been  transacted  with
telecommunications,   field  services,   natural  resources  and  transportation
companies,  including  maritime and trucking  companies  located  throughout the
United  States.  The  Company  grants  credit  based  on an  evaluation  of  the
customer's  financial  condition,  generally  without  requiring  collateral  or
deposits.  Exposure to losses on trade accounts receivable, for both service and
for equipment  sales,  is  principally  dependent on each  customer's  financial
condition.  For the year ended December 31, 2000,  four customers  accounted for
approximately  31%  of  the  Company's  service  revenue,   with  two  customers
individually  accounting for 10% each. The Company  anticipates  that its credit
risk with respect to trade  accounts  receivable  in the future will become more
diversified  due to the large  number of  customers  expected  to  comprise  the
Company's  subscriber base and their expected  dispersion  across many different
industries and geographies.

Software Development Costs

The Company  capitalizes costs related to the development of certain software to
be used with its mobile  messaging  and position  location  service (the "Mobile
Data  Communications  Service")  product,  all of which were sold as part of the
Aether  transaction.  The Company  commenced  amortization of these costs in the
first quarter of 1996.  These costs were being  amortized over three years prior
to Aether's  purchase of these  assets.  As of December  31, 2000 and 1999,  net
capitalized software development costs were $0 and $152,000, respectively. These
amounts are  included in property  and  equipment  in the  accompanying  balance
sheets.  Additionally,  during 1998, the Company  adopted  Statement of Position
("SOP") No. 98-1 -- "Accounting for the Costs of Computer Software  Developed or
Obtained for Internal  Use." As of December 31, 2000 and 1999,  net  capitalized
internal use software  costs were $6.4 million and $5.3  million,  respectively,
and are included in property and equipment in the  accompanying  balance  sheets
and are amortized over three years.

                                      F-28


Deferred Charges and Other Assets

Deferred charges and other assets primarily consist of the unamortized financing
costs  and debt  issue  costs  associated  with the  existing  vendor  financing
arrangements,  the Senior Notes,  the Bank Financing,  the long-term  portion of
deferred equipment costs, the long-term portion of lease receivables  associated
with a 5-year customer lease program  offered in 1999, the long-term  portion of
prepaid  expenses of XM Radio,  and the  long-term  portion of the interest rate
swap purchased in connection with the Bank Financing (see Note 8).



                                                                December 31,
                                                              2000       1999
                                                               (in thousands)
                                                                 
       Deferred financing costs, net                         $19,915   $15,299
       Prepaid expenses of XM Radio-long-term portion          1,203     3,422
       Deferred equipment costs                               27,893        --
       Lease receivables-long-term portion                        --     2,628
       Interest rate swap agreement-long-term portion             --       611
       Other long term assets                                    524       580
                                                            --------  --------
                                                             $49,535   $22,540


Financing  costs are amortized  over the term of the related  facility using the
straight-line method, which approximates the effective interest method.




Other Long-Term Liabilities

Other long-term liabilities consist of the following:



                                                                           December 31,
                                                                       2000        1999
                                                                       ----        ----
                                                                         (in thousands)
                                                                           
       Deferred revenue, Aether (Note 13)                             $11,750       $--
       Asset purchase deposit,  Satellite Ventures (Note 13)           10,746        --
       Deferred revenue, Satellite Ventures (Note 13)                   3,630        --
       Deferred equipment revenue                                      27,893        --
       XM Radio royalty payable and other long-term liabilities         7,086     3,955
                                                                      -------    ------
                                                                      $61,105    $3,955
                                                                      =======    =======


Revenue Recognition

The  Company  generates   revenue  through  equipment  sales,   airtime  service
agreements,  and  consulting  services.  In  2000,  the  Company  adopted  Staff
Accounting  Bulletin No. 101, "Revenue  Recognition" ("SAB 101"),  issued by the
SEC.  The  adoption of SAB 101 did not have a material  impact on the  Company's
reported financial position or results of operations.  SAB 101 provides guidance
on  the  recognition,  presentation  and  disclosure  of  revenue  in  financial
statements. In certain circumstances,  SAB 101 requires the Company to defer the
recognition  of revenue and costs related to equipment sold as part of a service
agreement. Revenue is recognized as follows:

Equipment and service sales: The Company sells equipment to resellers who market
its  terrestrial  product and airtime  service to the public.  The Company  also
sells its product directly to end-users.  Revenue from the sale of the equipment
and  along  with  activation  fees  as well as the  cost  of the  equipment  are
initially deferred and are generally  recognized over a period  corresponding to
the Company's  estimate of customer life.  Equipment  costs are deferred only to
the extent of deferred revenue.

Consulting services:  The Company  occasionally  provides consulting services to
its customers.  Revenue from such services is generally recognized following the
contract terms as milestones are achieved.

                                      F-29


Research and Development Costs

Research and  development  costs are expensed as  incurred.  Such costs  include
internal  research  and  development  activities  and expenses  associated  with
external product  development  agreements.  The Company's core wireless business
incurred research and development  costs of approximately  $2.1 million in 2000,
$1.0 million in 1999,  and $1.1  million for 1998.  The  Company's  consolidated
results also included research and development costs incurred by XM Radio in the
amount of $7.4 million in 2000 and $2.9 million in 1999.

Advertising Costs

Advertising  costs are charged to  operations  in the year  incurred and totaled
$12.6 million, $4.2 million, and $2.9 million for 2000, 1999 and 1998. A portion
of  the  advertising  costs  associated  with  the  Company's  Yahoo!   Internet
promotion,  were prepaid in the form of warrants to acquire  common stock issued
by the Company, valued at $4.8 million. The prepaid expenses are expensed as the
associated  page views are  delivered  by Yahoo!.  As of  December  31, 2000 the
Company  had  recognized  approximately  $0.7  million  of  advertising  expense
associated  with the Yahoo!  Internet  promotion.  As of December 31, 2000,  the
balance of these prepaid advertising expenses was $4.1 million.

Capitalized Interest

XM Radio  capitalizes  a portion of interest  cost as a component of the cost of
the FCC licenses and satellite system under  construction.  XM Radio capitalized
interest in the amount of $39.1 million in 2000 and $15.3 million in 1999.

Stock Based Compensation

The Company  accounts for employee  stock options using the method of accounting
prescribed by Accounting  Principles  Board ("APB") Opinion No. 25,  "Accounting
for Stock Issued to Employees."  Generally,  no expense is recognized related to
the Company's  stock options  because the option's  exercise price is set at the
stock's fair market value on the date the option is granted.

Assessment of Asset Impairment

The  Company  follows  the  provisions  of  SFAS  No.  121  "Accounting  for the
Impairment of Long-Lived  Assets and for  Long-Lived  Assets to be Disposed of,"
which requires that long-lived  assets and certain  identifiable  intangibles be
reviewed for impairment  whenever  events or changes in  circumstances  indicate
that the carrying amount of an asset may not be recoverable.  Recoverability  of
assets to be held and used is measured by a comparison of the carrying amount of
an asset to future net cash flows expected to be generated by the asset. If such
assets are  considered  to be  impaired,  the  impairment  to be  recognized  is
measured by the amount by which the  carrying  amount of the assets  exceeds the
fair value of the assets.  Assets to be disposed of are reported at the lower of
the carrying amount or their fair value less costs to sell.

The Company  assessed the carrying  value of its satellite and related assets as
of December 31, 1999, and determined that an impairment did exist. The Company's
geostationery  satellite was originally  designed for voice services.  Following
the Company's acquisition of Motient Communications in 1998, the Company focused
its business  towards a data  strategy,  relying  primarily  on its  terrestrial
network,  and as a result of this shift,  data service revenue in 1999 increased
to 73% of  service  revenue  from 69% in 1998.  Voice  service  revenue  in 1998
represented 24% of service revenue versus only 20% in 1999. This shift to a data
strategy was also  apparent in the Company's  new primary  product  offerings in
1999 --  MobileMAX2(tm),  announced  in the  fourth  quarter  of 1999 with sales
beginning in 2000, and  eLink(sm),  which began selling in the fourth quarter of
1999.  MobileMAX2(tm)  was expected to be the Company's second generation multi-
mode data messaging  service and eLink is a two-way  wireless  email device.  In
addition  to these  factors,  TMI  Communications  Company  Limited  Partnership
("TMI") and SatCom Systems, Inc. were each granted applications in November 1999
to use TMI's Canadian-licensed satellite system to provide service in the United
States.  TMI's system operates in the Mobile  Satellite  Services ("MSS") L-band
and has footprints  covering the United States.  These  companies'  entry in the
United States marketplace  represents  additional  competition to the Company in
the voice business. Given these factors,  management evaluated the satellite and
related ground segment assets for impairment. Based on the analysis, the Company
determined  that  future  cash  flows were less than the  carrying  value of the
assets.  Accordingly,  the Company  determined  the fair value of the assets and
recorded an impairment  charge of $97.4 million to reduce the carrying  value of
the satellite and related  ground  segment  assets to the Company's  estimate of
fair value at December 31, 1999.  The  determination  of fair value was based on
management's  best  estimate  of  the  expected  discounted  future  cash  flows
attributable to the satellite and related ground segment.

                                      F-30


Loss Per Share

Basic  earnings per share excludes  dilution and is computed by dividing  income
available to common stockholders by the weighted-average number of common shares
outstanding  for the period.  Diluted  earnings per share reflects the potential
dilution that could occur if securities or other contracts to issue common stock
were  exercised  or  converted  into common stock or resulted in the issuance of
common  stock  that then  shared in the  earnings  of the  entity.  Options  and
warrants to purchase shares of common stock were not included in the computation
of loss per share as the effect would be  antidilutive.  As a result,  the basic
and diluted  earnings per share amounts are identical.  As of December 31, 2000,
there were options and warrants to acquire  approximately  4.5 million shares of
common stock that are not included in this calculation  because the effect would
be antidilutive.

Comprehensive Income

SFAS No.  130,  "Reporting  of  Comprehensive  Income"  requires  "comprehensive
income" and the components of "other comprehensive income" to be reported in the
financial  statements and/or notes thereto.  Since the Company does not have any
components of "other  comprehensive  income," reported net income is the same as
"comprehensive income" for the years ended December 31, 2000, 1999, and 1998.

Segment Disclosures

In accordance  with SFAS No. 131,  "Disclosures  about Segments of an Enterprise
and  Related  Information,"  the Company has two  operating  segments:  its Core
Wireless  Business and XM Radio's  satellite-based  digital audio radio service.
The  Company  provides  its Core  Wireless  Business to the  continental  United
States,  Alaska,  Hawaii, Puerto Rico, the U.S. Virgin Islands, and certain U.S.
coastal  waters.  All  revenues  are derived  from  customers  within the United
States.  XM Radio is in the  process of  constructing  its  satellite  system to
provide  digital  radio  programming  transmitted  from  satellites to vehicles,
homes, and portable radios.  XM Radio is currently in the development  stage and
thus  has  no  revenue  generating  operations.  The  following  summarizes  the
Company's Core Wireless Business and equipment revenue by major product lines:



                                              Revenue for the Year Ended
                                                       December 31,
                                              2000        1999       1998
                                              ----        ----       ----
                                                     (in millions)
                                                        
      Data Service                           $52.6   $   49.7    $   40.1
      Voice Service                           12.2       13.2        14.0
      Capacity Resellers and Other             8.7        4.8         3.9
      Equipment                               26.4       23.4        29.2


Reclassification

Certain amounts from prior years'  consolidated  financial  statements have been
reclassified to conform with the 2000 presentation.

New Accounting Pronouncements

In  September  1998,  FASB  issued  SFAS No.  133,  "Accounting  for  Derivative
Instruments  and Hedging  Activities,"  which  requires the  recognition  of all
derivatives  as either  assets  or  liabilities  measured  at fair  value.  This
statement  was  originally  effective  for the year ended  December 31, 2000. In
September  1999,  FASB issued SFAS No. 137, which deferred the effective date of
SFAS No. 133 until fiscal years  beginning  after  September  15, 2000.  In June
2000, FASB issued SFAS No. 138,  "Accounting for Certain Derivative  Instruments
and Certain  Hedging  Activities,"  which  amends SFAS No. 133.  This  Statement
limits the scope to certain  derivatives and hedging  activities.  The effective
date of SFAS No. 138 is for fiscal years beginning after September 15, 2000. The
Company  does not  believe  that the  adoption of these  statements  will have a
material impact on its financial position, results of operations and cash flows.

During the fourth quarter of 2000, the Company adopted Staff Accounting Bulletin
No. 101, "Revenue  Recognition" ("SAB 101"), issued by the SEC. SAB 101 provides
guidance on the recognition, presentation and disclosure of revenue in financial
statements. In certain circumstances,  SAB 101 requires the Company to defer the
recognition  of revenue and costs related to equipment sold as part of a service
agreement.  The  adoption  of SAB 101  did not  have a  material  impact  on the
Company's statement of operations.


                                      F-31


In March  2000,  FASB  issued  Interpretation  No. 44,  "Accounting  for Certain
Transactions Involving Stock Compensation" ("FIN 44") was issued. FIN 44 further
defines the accounting  consequence of various  modifications  to the terms of a
previously fixed stock option or award under APB Opinion No. 25, "Accounting for
Stock Issued to Employees." FIN 44 became effective on July 1, 2000, but certain
conclusions in FIN 44 cover specific  events that occurred after either December
15, 1998 or January 12, 2000. The Company adopted FIN 44 in 2000. The effects of
implementing  FIN  44  required  XM  Radio  to  recognize   additional  non-cash
compensation  during the year ended  December 31, 2000,  of  approximately  $1.2
million  associated  with stock options that had been repriced during the period
covered by FIN 44, and the Core Wireless Business recognized additional non-cash
stock  compensation  of  approximately  $1.0  associated  with the  transfer  of
employees to Aether.  Additional  compensation  charges related to certain stock
compensation  awards made by the Company  may result  depending  upon the market
value of the common stock at each balance sheet date.

3. STOCKHOLDERS' EQUITY (DEFICIT)

The Company has  authorized  200,000 shares of Preferred  Stock and  150,000,000
shares of  Common  Stock.  The par  value  per share is $0.01 for each  class of
stock.  For each share held,  common  stockholders  are  entitled to one vote on
matters  submitted  to the  stockholders.  Cumulative  voting  applies  for  all
elections of directors of the Company.

The Preferred Stock may be issued in one or more series at the discretion of the
Board of Directors (the "Board"),  without  stockholder  approval.  The Board is
authorized   to  determine   the  number  of  shares  in  each  series  and  all
designations, rights, preferences, and limitations on the shares in each series,
including,  but not limited to, determining whether dividends will be cumulative
or non-cumulative.

Certain   significant   stockholders   of  the  Company   have  entered  into  a
Stockholders'  Agreement (the "Agreement") which contains provisions relating to
the  election of  directors,  procedures  for  maintaining  compliance  with the
Federal Communication Commission's ("FCC") alien ownership restrictions, certain
restrictions on the transfer,  sale and exchange of Common Stock, and procedures
for appointing  directors to the Executive Committee of the Board, among others.
The Agreement  continues in effect until  terminated by an  affirmative  vote of
holders of  three-fourths  of the Company's  Common Stock held by parties to the
Agreement. Other matters relating to the Company's governance of the Company are
set forth in the Certificate of Incorporation and Bylaws.

As of  December  31,  2000,  the Company had  reserved  Common  Stock for future
issuance as detailed below.


                                                                  
    Shares issuable upon exercise of warrants                         7,957,475
    Amended and Restated Stock Option Plan for Employees              6,033,037
    Stock issuable upon exercise of Satellite Ventures'
    investors' option (see Note 13)                                   4,166,667
    Stock Option Plan for Non-Employee Directors                         82,000
    Employee Stock Purchase Plan                                        321,572
    Defined Contribution Plan                                            65,321
                                                                     ----------
         Total                                                       18,626,072
                                                                     ==========



XM Radio

On July  7,  1999  XM  Radio  issued  $250  million  of  Series  A  subordinated
convertible  notes to several new strategic and  financial  investors  including
General Motors, Clear Channel Investments,  DIRECTV,  Telcom Ventures,  Columbia
Capital and Madison Dearborn Partners.  $75 million of the proceeds were used to
pay an  outstanding  note payable and the  remaining  proceeds were used to fund
working capital needs. The Series A subordinated  notes and all accrued interest
thereon are convertible  into Series A convertible  preferred stock (in the case
of the notes held by General  Motors),  or Class A common stock (in the case the
notes held by the other  investors) at a conversion  price of $9.52 per share at
the  election  of the note  holders or upon the  occurrence  of certain  events,
including an initial public offering of a prescribed size of XM Radio shares. On
October 8, 1999, XM Radio  completed an initial public  offering of 10.2 million
shares of Class A common  stock.  Concurrent  with this  offering,  the Series A
subordinated convertible notes were converted into 10.8 million shares of Series
A convertible preferred stock and 16.2 million shares of Class A common stock.

In the first quarter of 2000, XM Radio raised an  additional  $228.6  million in
net proceeds  through a follow-on  offering of 4.4 million shares of its Class A
common stock and 2.0 million shares of Series B convertible redeemable preferred
stock.

                                      F-32



In March 2000, XM Radio  completed a high yield debt offering of 325,000  units,
each unit consisting of $1,000  principal amount of 14% Senior Secured Notes due
2010 and one warrant to purchase  8.024815  shares of Class A common stock of XM
Radio at an exercise  price of $49.50 per share.  XM Radio realized net proceeds
of  $191.5  million,   excluding  $123.0  million  used  to  acquire  restricted
investments  which will be used to pay interest payments due under the notes for
the first three years.

In August  2000,  XM Radio  completed a private  offering of 235,000  shares for
$1,000 per share of its 8.25% Series C convertible  redeemable  preferred  stock
and raised  additional net proceeds of  approximately  $226.8 million.  XM Radio
recorded a $123.0 million  beneficial  conversion  charge that reduced  earnings
available to common  stockholders.  The issuance of the Series C preferred stock
caused the exercise  price of the warrants  sold in March 2000 to be adjusted to
$47.94 and the number of warrant shares to be increased to 8.285948 per warrant.

As a result of the issuance by XM Radio of its Series C  convertible  redeemable
preferred stock with a common stock  conversion price less than the market value
of the common  stock,  XM Radio  recorded a  beneficial  conversion  charge that
reduced earnings available to common stockholders. The Company has reflected its
proportionate  share of the  beneficial  conversion  charge in the  accompanying
consolidated statements of operations.

In  connection  with the  above  XM Radio  transactions,  the  Company's  voting
interest in XM Radio was reduced to 33.1 % (21.3% on a fully diluted basis), and
in accordance with Staff  Accounting  Bulletin 51 (SAB 51), the Company recorded
an increase to its  investment in XM Radio of $129.5  million in 2000 and $80. 7
million  in  1999.  SAB 51  addresses  the  accounting  for  sales of stock by a
subsidiary. Because XM Radio is a development stage company, SAB 51 requires the
difference in the carrying  amount of the  Company's  investment in XM Radio and
the net book value of XM Radio  after the stock  issuance  be  reflected  in the
financial statements of the Company as a capital transaction in the accompanying
consolidated statements of stockholders' equity (deficit).



4. PROPERTY AND EQUIPMENT

Property and equipment consists of the following:



                                                                                   December 31,
                                                                               2000           1999
                                                                               ----           ----
                                                                                  (in thousands)
                                                                                     
                   Space Segment                                             $127,621      $127,316
                   Ground Segment                                              72,524        75,435
                   Network equipment                                           83,638        58,511
                   Construction in progress                                    20,492        11,493
                   Office equipment and furniture                              48,448        18,605
                   Leasehold improvements - XM Radio                           26,481            --
                   Mobile data communications service equipment                    --        17,191
                                                                             --------      --------
                                                                              379,204       308,551
                   Less accumulated depreciation and amortization             203,498       192,035
                                                                             --------      --------
                   Property and equipment, net                               $175,706      $116,516
                                                                             ========      ========


Property and equipment is recorded at cost and depreciated  over its useful life
using the straight line method.  Assets recorded as capital leases are amortized
over the shorter of their useful lives or the term of the lease.  The  estimated
useful  lives of office  furniture  and  equipment  vary from  2-10  years.  The
Company's ground segment is depreciated  over 8 years, the network  equipment is
depreciated over 7 years, and the mobile data communications  service equipment,
which was sold to Aether, was depreciated over 3 1/2 years. The Company has also
capitalized  certain  costs to develop and implement  its  computerized  billing
system.  These costs are included in property and equipment and are  depreciated
over 8 years.

The Company is depreciating  its satellite,  MSAT-2,  over its estimated  useful
life of 10  years,  which  was  based  on  several  factors,  including  current
conditions and the estimated  remaining fuel of MSAT-2.  The original  estimated
useful live is  periodically  reviewed  using  current  Telemetry  Tracking  and
Control data. To date, no significant  change in the original  estimated  useful
life  has  resulted.  The  telecommunications   industry  is  subject  to  rapid
technological  change  which may  require  the  Company to revise the  estimated
useful  lives of MSAT-2  and the  ground  segment  or to adjust  their  carrying
amounts.  As discussed in Note 2, during 1999,  the Company wrote down the value
of the space and ground segment assets to their estimated fair value.

The costs of constructing and putting satellites into service are capitalized in
the financial  statements and depreciated  over the estimated useful life of the
satellite. A failure of the satellite from unsuccessful launches and/or in orbit
anomalies would result in a current  write-down of the satellite value.  Partial
satellite failures are recognized currently to the extent such losses are deemed
abnormal to the operation of the  satellite.  A partial  failure which is deemed
normal  would  not  result  in a loss  of  satellite  capacity  beyond  what  is
considered  normal satellite wear and tear.  Additionally,  all future incentive
arrangements  relating to the  construction of satellites will be capitalized at
launch.



XM Radio is currently developing its satellite system. The costs of constructing
and putting the satellite  into service are being  capitalized.  At December 31,
2000, the carrying value of the system under  construction  related to the costs
incurred in obtaining a FCC license and approval as well as system  development.
XM Radio will begin amortizing the FCC license upon commercial  launch using the
straight  line  method  over  its  estimated   useful  life  of  fifteen  years.
Depreciation  of the satellite will begin upon in-orbit  delivery and the ground
stations will begin upon commercial  launch.  The satellites and ground stations
will be depreciated over their estimated useful lives.

                                      F-33




XM Radio System Under Construction consists of the following:



                                                                    December 31,
                                                                2000           1999
                                                                ----           ----
                                                                    (in thousands)
                                                                         
       License                                                $135,139       $127,338
       Satellite System                                        533,154        214,471
       Terrestrial System                                       84,715         11,396
       Spacecraft control facilities                            13,046          2,000
       Broadcast facilities and other                           27,970          2,073
       System under development                                  6,458             --
                                                              --------       --------
            Total                                             $800,482       $357,278
                                                              ========       ========


The  balances at  December  31, 2000 and 1999  include  capitalized  interest of
$65,176 and $26,124, respectively.

5. GOODWILL AND OTHER INTANGIBLE ASSETS

Goodwill and other intangible assets consist of the following:





                                                                                             December 31,
                                                                                          2000          1999
                                                                                          ----          ----
                                                                                            (in thousands)
                                                                                                 
          FCC Licenses                                                                   $53,437       $49,880
          Goodwill-Motient Communications Acquisition                                      6,154         6,154
          Programming and advertising agreements-XM Radio Acquisition                      7,337         7,337
          Receiver Agreement-XM Radio Acquisition                                          4,207         4,207
          Less accumulated amortization                                                   (8,667)       (5,367)
                                                                                         --------      --------
          Goodwill and other intangible assets, net                                      $62,468       $62,211
                                                                                         =======       =======



Goodwill and other  intangible  assets are being  amortized  on a  straight-line
basis over 10-20 years except for the  programming  and  advertising  agreements
acquired in the XM Radio  Acquisition.  These agreements will begin amortization
upon  commencement  of  commercial  operations of XM Radio and will be amortized
over the life of their respective contract.

6. STOCK OPTIONS AND RESTRICTED STOCK

The Company has two active stock option  plans.  The Motient  Corporation  Stock
Award  Plan  (the  "Plan")  permits  the  grant  of  non-statutory  options  and
stock-based  awards up to a total of 7.3 million  shares of Common Stock.  Under
the Plan, the exercise  price and vesting  schedule for options is determined by
the Compensation Committee of the Board, which was established to administer the
Plan. Generally, options vest over a three year period and will have an exercise
price not less than the fair  market  value of a share on the date the option is
granted  or have a term  greater  than ten  years.  In May 2000,  the  Company's
stockholders  approved  certain  amendments  to the Plan,  including  permitting
non-employee directors to be eligible for option grants under the Plan.

                                      F-34



The  Company  also has a Stock  Option  Plan  for  Non-Employee  Directors  (the
"Director  Plan")  which  provides  for the  grant of  options  up to a total of
100,000 shares of Common Stock.  Effective March 25, 1999,  Directors receive an
initial  option to purchase  5,000 shares of Common  Stock,  with annual  option
grants to purchase  2,500  shares of Common  Stock.  In  addition,  the Board of
Directors may also grant  discretionary  options at such times and on such terms
and conditions as it deems  appropriate.  Options under the Director Plan can be
exercised  at a price equal to the fair market value of the stock on the date of
the grant and are fully vested and immediately exercisable on the date of grant.
Each Director Plan option  expires on the earlier of (i) ten years from the date
of grant or (ii) seven months after the Director's termination.

In January  1998,  the Board of Directors  granted  restricted  stock to certain
members of senior  management.  These grants  include both a three-year  vesting
schedule as well as specific  corporate  performance  targets.  The  performance
requirements  will remain in place,  and unless  further  waived by the Board of
Directors,  failure to meet a required  performance  target  would  prevent  the
vesting of the restricted  shares. As of December 31, 1998, the Company recorded
costs of approximately  $252,000 associated with the vesting of these shares. As
performance targets were not met or waived, there were no such costs recorded in
1999 or in 2000;  however,  in January 2001, in recognition of employee services
in entering into the second  Satellite  Ventures  transaction (see Note 16), the
Board lifted the  remaining  restrictions,  and the shares will be released upon
vesting.  Additional  compensation  costs will be recorded in 2001 and 2002 upon
vesting of these shares.

Information regarding the Company's stock option plans is summarized below:



                                                                                             Weighted Average
                                                             Available       Granted and       Option Price
                                                             for Grant       Outstanding        Per Share
                                                             ---------       -----------        ---------
                                                                                           
           Balance, December 31, 1998                       1,383,463         2,729,071             $11.11
              Restricted stock granted                        (40,000)               --                 --
              Restricted stock cancelled                       30,785                --                 --
              Additional shares authorized for grant           50,000                --                 --
              Options granted                              (1,040,226)        1,040,226               5.92
              Exercised                                            --          (484,815)             11.74
              Forfeited                                       183,284          (183,284)              4.87
                                                           ----------        ----------
           Balance, December 31, 1999                         567,306         3,101,198               8.73
              Restricted stock cancelled                       50,000                --                 --
              Additional shares authorized for grant        2,800,000                --                 --
              Options granted                              (1,570,294)        1,570,294              15.98
              Exercised                                            --          (403,467)             11.03
              Forfeited                                       347,420          (347,420)             13.42
                                                           ----------        -----------
           Balance, December 31, 2000                       2,194,432         3,920,605             $11.65
                                                            ==========        ==========

Options exercisable at December 31:



                                                    Average
                                  Options        Exercise Price
                                  -------        --------------
                                                
               2000             1,658,044                $10.40
               1999             1,344,511                $11.99
               1998               957,617                $13.29


The  Company  accounts  for  stock  compensation  costs in  accordance  with the
provisions  of APB No.  25,  "Accounting  for Stock  Issued to  Employees."  Had
compensation cost been determined based on the fair value at the grant dates for
awards  under  the  Company's  stock  plans in  accordance  with  SFAS No.  123,
"Accounting  for  Stock  Based  Compensation,"  the net  loss  would  have  been
increased by $7.3  million  ($0.15 per share) in 2000,  $6.2 million  ($0.16 per
share) in 1999,  and $8.9 million ($0.29 per share) in 1998. As required by SFAS
No. 123,  the fair value of each option  grant is estimated on the date of grant
using the Black-Scholes option pricing model with the following  assumptions for
2000,  1999,  1998: no historical  dividend yield; an expected life of 10 years;
historical  volatility  of 135% in  2000,  115% in  1999,  and 95% in 1998 and a
risk-free rate of return ranging from 4.64% to 5.34%.

                                      F-35


Exercise prices for options outstanding as of December 31, 2000, are as follows:



                                                  Options Outstanding                       Options Exercisable
                                        Number            Weighted                        Number
                                      Outstanding         Average         Weighted      Exercisable      Weighted
                                         as of          Contractual        Average         as of         Average
                 Range of            December 31,           Life          Exercise     December 31,      Exercise
              Exercise Prices            2000            Remaining          Price          2000           Price
              ---------------            ----            ---------          -----          ----           -----
                                                                                          
                   $4.61-8.84            809,306                8.12          $5.33        287,026          $ 5.62
                    8.87-8.87            724,701                7.14           8.87        413,892            8.87
                   9.73-12.50            496,701                6.04          11.97        479,701           11.99
                  12.81-12.81            221,579                6.06          12.81        221,579           12.81
                  13.00-15.12            255,179                4.75          13.07        250,179           13.04
                  15.17-15.17          1,365,139                9.07          15.17          1,000           15.17
                  17.37-38.06             48,000                8.77          28.64          4,667           19.97
                                       ---------                                         ---------
                                       3,920,605                7.68          11.65      1,658,044          $10.40
                                       =========               ======        =======     =========          ======



7.  INCOME TAXES

The Company  accounts for income taxes under the liability method as required in
SFAS No.  109,  "Accounting  for  Income  Taxes."  Under the  liability  method,
deferred  income taxes are  recognized  for the tax  consequences  of "temporary
differences"  by applying  enacted  statutory  tax laws and rates  applicable to
future years to differences between the financial statement carrying amounts and
the tax bases of existing assets and liabilities.  Under this method, the effect
on deferred taxes of a change in tax rates is recognized in income in the period
that  includes  the  enactment  date.  Potential  tax  benefits,  related to net
operating losses and temporary differences,  have been recorded as an asset, and
a valuation allowance for the same amount has been established.  The Company has
paid no  income  taxes  since  inception.  The  following  is a  summary  of the
Company's net deferred tax assets.



                                                                          December 31,
                                                                  ------------------------
                                                                     2000          1999
                                                                     ----          ----
                                                                        (in thousands)
                                                                          
       Net Operating Loss Carryforwards                              $407,803   $342,791
       Deferred Taxes Related to Temporary Differences:
          Tangible asset bases, lives and depreciation methods        (49,483)   (43,156)
          Other                                                        67,698     62,843
                                                                     ---------  --------
            Total deferred tax asset, net                             426,018    362,478
        Less valuation allowance                                     (426,018)  (362,478)
                                                                     ---------  ---------
        Net deferred tax asset                                      $      --   $     --
                                                                     =========   ========


Significant  timing  differences  affecting  deferred  taxes in 2000 reflect the
treatment of costs  associated  with the Space Segment for  financial  reporting
purposes  compared to tax  purposes.  As of December 31,  2000,  the Company had
estimated net operating loss  carryforwards  ("NOLs") of $1.01 billion.  In July
1999,  as a result of the  Company's  investment  in XM Radio which  triggered a
change in control as defined by the Internal  Revenue Code,  utilization  of the
Company's NOLs were limited to approximately $43 million per year. The Company's
NOLs expire between 2004 and 2020.


                                      F-36


8. LONG-TERM DEBT




                                                                December 31,
                                                            2000          1999
                                                            ----          ----
                                                              (in thousands)
                                                                  
       Senior Notes, net of discount                       $328,474     $327,576
       Senior Notes, net of discount - XM Radio             261,298           --
       Bank Financing-- Term Loan Facility                   40,000       41,000
       Bank Financing-- Revolving Credit Facility            71,250       44,000
       Vendor Financing Commitment                            8,492        4,512
       Convertible note payable due to related party             --       50,138
       Deferred Trade Payables                                2,212        3,983
                                                          ---------     --------
                                                            711,726      471,209
       Less current maturities                                6,458        5,960
                                                          ---------     --------
       Long-term debt                                      $705,268     $465,249
                                                          =========     ========


$335 Million Unit Offering

On March 31, 1998,  Motient  Holdings,  a  wholly-owned  subsidiary  of Motient,
issued $335 million of Units (the  "Units")  consisting  of 12 1/4% Senior Notes
due 2008 (the "Senior  Notes"),  and one warrant to purchase  3.75749  shares of
Common  Stock of the Company for each $1,000  principal  amount of Senior  Notes
(the  "Warrants")  at an exercise  price of $12.51 per share.  The Warrants were
valued at $8.5 million and were  recorded as a debt  discount.  A portion of the
net  proceeds  of the  sale of the  Units  were  used  to  finance  the  Motient
Communications Acquisition in 1998. In connection with the Senior Notes, Motient
Holdings purchased  approximately $112.3 million of restricted  investments that
are restricted for the payment of the first six interest  payments on the Senior
Notes. Interest payments are due semi-annually, in arrears, beginning October 1,
1998.  At December  31,  2000,  approximately  $20.7  million was  available  in
restricted  investments to fund the next interest payment coming due on April 1,
2001.  Interest  payments  beginning in October 2001 related to the Senior Notes
will be payable from the Company's unrestricted cash and cash equivalents.  As a
result of the automatic  application of certain adjustment  provisions following
the issuance of 7.0 million shares of Common Stock in a public offering in 1999,
the exercise price of the warrants  associated with the Senior Notes was reduced
to $12.28 per share,  the number of shares per  warrant  was  increased  to 3.83
shares for each  $1,000  principal  amount of Senior  Notes,  and the  aggregate
number of shares  issuable  upon  exercise of such  warrants  was  increased  by
24,294.  The  additional  Senior Note  warrants  and  re-pricing  were valued at
$440,000.  This was recorded as additional debt discount in the third quarter of
1999. The Senior Notes are fully guaranteed by Motient Corporation.

$325 Million Unit Offering - XM Radio

On March 15, 2000, XM Radio closed a private  placement of 325,000  units,  each
unit consisting of $1,000  principal amount of 14% senior secured notes due 2010
of XM Satellite Radio Inc. and one warrant to purchase  8.024815 shares of Class
A common stock at price of $49.50 per share.  XM Radio  realized net proceeds of
$191.5 million,  excluding $123.0 million used to acquire  securities which will
be used to pay interest  payments due under the notes for the first three years.
The $325 million  face value of notes was offset by a discount of $65.7  million
associated with the fair value of the warrants sold. As a result of the issuance
of Series C preferred  stock, the exercise price of the warrants was adjusted to
$47.94 per share and the number of warrant  shares to be  increased  to 8.285948
per share.

Bank Financing

In March 1998, the Company entered into a $200 million Bank Financing (the "Bank
Financing")  consisting of two facilities:  (i) the Revolving Credit Facility, a
$100 million  unsecured  five-year  reducing  revolving credit facility maturing
March 31, 2003, and (ii) the Term Loan Facility, a $100 million five-year,  term
loan facility with up to three  additional  one-year  extensions  subject to the
lenders'  approval.  In 1999, the Term Loan Facility was reduced to $41 million.
In 2000,  the Term Loan  Facility was reduced to $40 million,  and the Revolving
Credit  Facility was reduced to $77.25  million.  The Revolving  Credit Facility
ranks pari passu with the Senior Notes. The Term Loan Facility is secured by the
assets of the Company,  principally  its  stockholdings  in XM Radio and Motient
Holdings, and will be effectively  subordinated to the Revolving Credit Facility
and the Senior  Notes.  The Bank  Financing  is severally  guaranteed  by Hughes
Electronics  Corporation,  Singapore  Telecommunications  Ltd. and Baron Capital
Partners, L.P. (collectively,  the "Bank Facility Guarantors").  As discussed in
Note 16 - Subsequent Events, the outstanding borrowings were reduced as of March
30,  2001 to $31.5  million  under the Term Loan  Facility  at 6.19%.  The $77.3
million of  borrowings  outstanding  under the Revolving  Credit  Facility as of
March 30, 2001, are at rates ranging from 6.0% to 8.0%.


                                      F-37



The Term Loan Facility

The Term Loan Facility  bears an interest rate,  generally,  of 100 basis points
above London Interbank Offered Rate ("LIBOR").  The Term Loan Agreement does not
include any scheduled  amortization  until  maturity,  but does contain  certain
provisions for  prepayment  based on certain  proceeds  received by the Company,
unless  otherwise  waived  by  the  banks  and  the  Bank  Facility  Guarantors,
including: (1) 100% of excess cash flow obtained by the Company, as defined; (2)
the  first  $25.0  million  of net  proceeds  from the  lease or sale of  MSAT-2
received by the Company,  and thereafter 75% of the remaining  proceeds received
from such lease or sale (the  remaining  25% to be retained by Motient  Holdings
for business  operations);  (3) 100% of the proceeds of any other asset sales by
the Company;  (4) 50% of the net proceeds of any equity offerings of the Company
(the remaining 50% to be retained by the Company for business  operations);  and
(5) 100% of any major casualty  proceeds of the Company.  To the extent that the
Term Loan Facility is repaid, the  abovementioned  proceeds that would otherwise
have  been  used to  repay  the Term  Loan  Facility  will be used to repay  and
permanently reduce the commitment under the Revolving Credit Facility.

The Revolving Credit Facility

The Revolving  Credit Facility bears an interest rate,  generally,  of 100 basis
points  above LIBOR and is  unsecured,  with a negative  pledge on the assets of
Motient  Holdings  and its  subsidiaries  and ranks  pari  passu with the Senior
Notes.  The Revolving  Credit Facility will be reduced $10 million each quarter,
beginning with the quarter  ending June 30, 2002,  with the balance due on March
31, 2003.  Certain  proceeds  received by Motient  Holdings would be required to
repay and reduce the Revolving Credit  Facility,  unless otherwise waived by the
banks and the Bank Facility Guarantors,  including: (1) 100% of excess cash flow
obtained by Motient  Holdings,  as defined;  (2) the first $25.0  million net of
proceeds  of the lease or sale of  MSAT-2  received  by  Motient  Holdings,  and
thereafter 75% of the remaining  proceeds  received from such lease or sale (the
remaining 25% may be retained by Motient Holdings for business operations);  (3)
100% of the  proceeds of any other asset sales by Motient  Holdings;  (4) 50% of
the net proceeds of any offerings of Motient Holdings' equity (the remaining 50%
to be retained by for business  operations);  and (5) 100% of any major casualty
proceeds.  At such time as the Revolving  Credit Facility is repaid in full, and
subject to satisfaction of the restrictive payments provisions of the Notes, any
prepayment  amounts that would  otherwise have been used to prepay the Revolving
Credit Facility will be dividended to Motient Corporation. As of March 30, 2001,
no amounts were available for borrowing under the Revolving Credit Facility.

Debt Extinguishment

In 1999,  the Company  raised $116 million,  net of  underwriting  discounts and
expenses, through the issuance of 7.0 million shares of common stock in a public
offering. Of the net proceeds, $59 million was used to pay down a portion of the
Term Loan Facility, and is not available for re-borrowing.  In 2000, the Company
paid down and  permanently  reduced the Term Loan  Facility by an  additional $1
million with proceeds from stock and warrant exercises, and the Revolving Credit
Facility was permanently reduced by $22.8 million with a portion of the proceeds
of the Satellite Ventures and Aether transactions.  As a result of the permanent
reductions  of the Term  Facility and  Revolving  Credit  Facility,  the Company
recorded an extraordinary  loss on extinguishment of debt of approximately  $3.0
million in 2000 and $12.1 million in 1999,  which reflects the  write-off,  on a
pro-rata basis, of unamortized  guarantee  warrants held by certain  shareholder
guarantors  of the  Bank  Financing  (the  "Guarantee  Warrants")  and  deferred
financing fees associated with the placement of the Bank Financing.  The Company
will record an extraordinary  loss on  extinguishment of debt in 2001 associated
with the principal repayment, discussed in Note 16.


The Guarantees

In connection with the Bank Financing, the Bank Facility Guarantors, current and
former Motient shareholders,  extended separate guarantees of the obligations of
each of Motient Holdings and the Company to the banks,  which on a several basis
aggregated to $200 million. In their agreement with each of Motient Holdings and
the Company (the "Guarantee Issuance  Agreement"),  the Bank Facility Guarantors
agreed to make their  guarantees  available for the Bank Financing.  In exchange
for  the  additional  risks  undertaken  by  the  Bank  Facility  Guarantors  in
connection  with the Bank  Financing,  the Company agreed to compensate the Bank
Facility  Guarantors,  principally in the form of 1 million additional  warrants
and re-pricing of 5.5 million warrants  previously issued in connection with the
original Bank  Facility  (together,  the  "Guarantee  Warrants").  The Guarantee
Warrants  were  issued  with an  exercise  price of  $12.51  and were  valued at
approximately  $17.7 million.  The amounts  initially  assigned to the Guarantee
Warrants  and  subsequent  repricings  are  recorded  as Common  Stock  Purchase
Warrants and Unamortized  Guarantee  Warrants in the  accompanying  consolidated
balance  sheets.  The amount  assigned  to  Unamortized  Guarantee  Warrants  is
amortized to interest  expense over the life of the related  debt.  On March 29,
1999,  the Bank  Facility  Guarantors  agreed  to  eliminate  certain  covenants
contained  in the  Guarantee  Issuance  Agreement  relating to  earnings  before
interest, depreciation,  amortization, and taxes ("EBITDA") and service revenue.
In exchange for this  elimination  of covenants,  the Company agreed to re-price
their  Guarantee  Warrants,  effective April 1,1999,  from $12.51 to $7.50.  The
value of the re-pricing was approximately $1.5

                                      F-38


As a result  of the  automatic  application  of  certain  adjustment  provisions
following  the  issuance  of the 7.0  million  shares in the August  1999 public
offering,  the exercise  price of the Guarantee  Warrants was reduced to $7.3571
per  share and the  Guarantee  Warrants  became  exercisable  for an  additional
126,250 shares. The additional  Guarantee Warrants and re-pricing were valued at
$2.4 million. Additionally, in June 2000, the Bank Facility Guarantors agreed to
partially reduce the debt repayment  requirements  associated with the Satellite
Ventures transaction.  In exchange, the Company further reduced the price of the
Guarantee Warrants to $6.25, which was valued at $1.4 million.

Further,  in connection with the Guarantee Issuance  Agreement,  the Company has
agreed  to  reimburse  the  Bank  Facility  Guarantors  in the  event  that  the
Guarantors  are required to make payment  under the Bank  Financing  guarantees,
and, in  connection  with this  reimbursement  commitment  has provided the Bank
Facility Guarantors a junior security interest with respect to the assets of the
Company, principally its stockholdings in XM Radio and Motient Holdings.

In connection with the Bank Financing, the Company entered into an interest rate
swap agreement, with an implied annual rate of 6.51%. The swap agreement reduces
the impact of interest  rate  increases on the Term Loan  Facility.  The Company
paid a fixed fee of  approximately  $17.9  million  for the swap  agreement.  In
return,  the  counter-party  is obligated to pay a variable  rate equal to LIBOR
plus 50 basis points, paid on a quarterly basis directly to the respective banks
on  behalf of the  Company,  on a  notional  amount  of $100  million  until the
termination date of March 31, 2001. In connection with the pay down of a portion
of the Term Loan Facility  during 1999, the Company  reduced the notional amount
of its swap agreement from $100 million to $41 million and realized net proceeds
of  approximately  $6 million due to early  termination of a portion of the swap
agreement.  The Company  has  reflected  as an asset,  the fee paid for the swap
agreement  and is  included  in other  assets in the  accompanying  consolidated
balance  sheets.  The interest rate swap fee is being amortized over the life of
the swap as a component of interest expense.  The Company is exposed to a credit
loss in the  event of non-  performance  by the  counter  party  under  the swap
agreement.  The  Company  does  not  believe  there  is a  significant  risk  of
non-performance  as the counter party to the swap agreement is a major financial
institution.


Motorola Vendor Financing

Motorola  has entered  into an  agreement  with the Company to provide up to $15
million  of vendor  financing,  to finance  up to 75% of the  purchase  price of
additional  network base stations.  Loans under this facility bear interest at a
rate equal to LIBOR plus 7.0% and will be  guaranteed  by the  Company  and each
subsidiary of Motient  Holdings.  The terms of the facility require that amounts
borrowed be secured by the equipment purchased therewith. Advances made during a
quarter  constitute a loan,  which is then  amortized on a quarterly  basis over
three  years.  As of December  31, 2000 and 1999,  $8.5 million and $4.5 million
respectively, was outstanding under this facility at interest rates ranging from
13.0% to 13.8% and 12.1% to 13.1%, respectively.

Deferred Trade Payables

The Company has arranged  the  financing of certain  trade  payables,  which are
included in current maturities in the accompanying  consolidated balance sheets.
As of December 31, 2000 and 1999,  $2.2 million and $4.0 million,  respectively,
of deferred trade  payables were  outstanding at rates ranging from 5.9% to 7.2%
and 6.1% to 12.0%, respectively.

Baron XM Radio Convertible Note

In January 1999 the Company issued to Baron Asset Fund ("Baron"),  a stockholder
and guarantor of its bank facility, a $21.5 million note convertible into shares
of common stock of XM Radio (the  "Convertible Note Payable to Related Party" or
"Baron  XM  Radio   Convertible   Note".)   The  Company   subsequently   loaned
approximately  $21.4  million to XM Radio in exchange  for XM Radio Common stock
and a note convertible into XM Radio shares (the "XM Radio Note Receivable"). On
October 8, 1999 XM Radio  completed its initial public  offering of 10.2 million
shares  of  Class A  common  stock,  see  Note 13  below,  which  triggered  the
conversion of the XM Radio Note receivable into approximately 1.5 million shares
of XM Radio Class B common stock.

                                      F-39


The Baron XM Radio  Convertible  note was indexed to XM Radio stock and thus the
$50.1 million  recorded in the  consolidated  balance sheet at December 31, 1999
reflected  management's  best  estimate  of the fair value of the Baron XM Radio
Convertible  Note.  Changes in the fair value of the Baron XM Radio  Convertible
Note were reflected in the accompanying statement of operations as an unrealized
gain or loss on note payable to related  party.  Due to the increase in value of
XM Radio stock, the Company recorded an unrealized loss of $27.4 million for the
year ended December 31, 1999 on the Baron XM Radio  Convertible  Note.  Prior to
the XM Radio acquisition, the Company also recorded the XM Radio Note Receivable
at management's  best estimate of its fair value,  and as a result,  recorded an
unrealized  loss on the XM Radio Note Receivable $9.9 million for the year ended
December 31, 1999.

On January 13, 2000, Baron notified the Company of its intention to exchange the
Baron XM Radio  Convertible Note for 1,314,914 shares of XM Radio Class B Stock.
The exchange of the convertible note resulted in a gain in 2000 of approximately
$36.8 million  computed as the  difference in the carrying value of the Baron XM
Radio  Convertible Note and the Company's cost basis in XM Radio stock exchanged
upon conversion of this note.

Assets Pledged and Secured

All wholly owned subsidiaries of the Company are subject to financing agreements
that limit the amount of cash  dividends  and loans that can be  advanced to the
Company.  At  December  31,  2000,  all of the  subsidiaries'  net  assets  were
restricted under these  agreements.  These  restrictions  will have an impact on
Motient Corporation's ability to pay dividends.

Covenants

The debt agreements and related Guarantee Issuance Agreement entered into by the
Company contain various  restrictions,  covenants,  defaults,  and  requirements
customarily found in such financing agreements. Among other restrictions,  these
provisions include  limitations on cash dividends,  restrictions on transactions
between  Motient and its  subsidiaries,  restrictions  on capital  acquisitions,
material  adverse  change  clauses,   and  maintenance  of  specified  insurance
policies.

9. RELATED PARTIES

In 1990,  following a competitive  bid process,  Motient  signed  contracts with
Hughes Aircraft, the parent company of Hughes Communications  Satellite Services
("Hughes  Communications"),  a Motient  stockholder,  to  construct  MSAT-2 (the
"Satellite  Construction  Contract").  The contract contains flight  performance
incentives  payable  by the  Company  to  Hughes  Aircraft  if  MSAT-2  performs
according  to  the  contract.  As  a  result  of  certain   previously-disclosed
performance  considerations,  additional  contract  issues  associated  with the
flight performance  incentive  payments were raised by the Company.  At present,
ongoing  discussions are underway  between the parties  regarding such payments.
The  additional  payments  will range from $2.6 million to $5.9 million over the
next 5 years.

The Company has entered into various  transactions and agreements with Motorola,
Inc. ("Motorola"), a Motient stockholder,  which include the purchase by Motient
of  services,  network  hardware  and software  maintenance  services,  facility
rentals,  and network  gateway  fees.  Additionally,  Motorola  has provided the
Vendor Financing Commitment, which will be available to finance up to 75% of the
purchase price of additional network base stations (see Note 8).

                                      F-40


The following table represents a summary of all related party transactions.



                                                              Years Ended December 31
                                                         2000          1999           1998
                                                         ----          ----           ----
                                                                   (in thousands)
       Payments made to (from) related parties:
                                                                           
          Additions to property and equipment           $ 1,662       $2,667         $4,931
          Proceeds from debt issuance                        --      (21,500)       (10,000)
          Payments on debt obligations                    3,629        1,033         10,017
          Operating expenses                              3,433        4,496          7,568
                                                        -------     ---------       --------
       Net payments to (from) related parties           $ 8,724     $(13,304)       $12,516
                                                        =======     =========       ========

       Due to (from) related parties:
          Operating expenses                               $163         $651           $698
          Baron XM Radio convertible note                    --       50,138             --
          Vendor financing                                8,756        4,604          1,638
          Satellite capacity/airtime revenue                 --           (3)            (3)
          Capital acquisitions                            1,095          115            450
                                                        -------          ---        -------
       Net amounts due to related parties               $10,014     $ 55,505         $2,783
                                                        =======     ========        =======

10. LEASES

Capital Leases

The Company  leases  certain  office  equipment,  ground  segment  equipment and
switching  equipment under  agreements  accounted for as capital leases.  Assets
recorded  as capital  leases in the  accompanying  balance  sheets  include  the
following:



                                                        December 31,
                                                   2000          1999
                                                   ----          ----
                                                      (in thousands)
                                                          
       Ground segment equipment                   $7,263        $7,263
       Switch equipment                           16,740         8,346
       Office equipment                            6,434         3,743
       Less accumulated amortization             (16,116)       (8,961)
                                                 --------      --------
          Total                                  $14,321       $10,391
                                                 ========      ========


Operating Leases

The  Company  leases  substantially  all  of  its  base  station  sites  through
cancelable  operating  leases.  The majority of these leases provide for renewal
options for various  periods at their fair rental  value at the time of renewal.
In the normal course of business,  the operating leases are generally renewed or
replaced by other leases.  Additionally,  the Company leases certain  facilities
and equipment under arrangements  accounted for as operating leases.  Certain of
these arrangements have renewal terms.  Total rent expense,  under all operating
leases,  approximated,  $18.9  million,  $12.3 million and $9.1 million in 2000,
1999 and 1998 respectively.

At  December  31,  2000,  minimum  future  lease  payments  under  noncancelable
operating and capital leases, including XM Radio, are as follows:



                                                               Operating       Capital
                                                               ---------       -------
                                                                      (in thousands)
                                                                      
      2001                                                     $16,830         $6,274
       2002                                                      17,152          4,558
       2003                                                      16,983          5,765
       2004                                                      16,176            --
       2005 and thereafter                                       35,069            --
                                                               --------        --------
          Total                                                $102,210         16,597
                                                               ========
       Less: Interest                                                           (2,777)
                                                                               --------
       Present value of minimum lease payments                                  13,820
       Less: Current maturities                                                 (4,590)
                                                                               --------
       Non current capital lease obligation                                    $ 9,230
                                                                               ========


XM Radio's  future  minimum  annual  lease  payments  related to  noncancellable
operating  leases,  included  above,  range from $11  million  to $14.2  million
annually for each of the five years ended December 31, 2005. For years beginning
after January 1, 2006, the aggregate future minimum operating lease payments was
$22.5 million.


11. OPERATING AGREEMENTS AND COMMITMENTS

Joint Operating and Satellite Capacity Agreements

The Company is party to Restoral and Capacity Agreement,  dated January 8, 2001,
with a Canadian entity,  TMI  Communications  and Company,  Limited  Partnership
("TMI").  The parties to these  agreements  will  provide,  among other  things,
emergency backup and restoral  services to each other during any period in which
the other's satellite is not functioning properly. Additionally, each party will
be entitled to lease excess  capacity  from the other  party's  satellite  under
specified terms and conditions.

                                      F-41


Commitments

At December 31,  2000,  the Company had  remaining  contractual  commitments  to
purchase eLink and other subscriber  equipment  inventory in the amount of $21.5
million during 2001.

The Company also had certain other capital,  advertising,  and operating expense
contract  commitments  that total  approximately  $2.7  million over the next 18
months.

Subsequent to December 31, 2000,  the Company  entered into  additional  product
development agreements for the purchase of engineering services and for licenses
to be used in future applications of its eLink product. Additionally, should the
engineering  effort  prove  successful,  the Company has  committed  to purchase
additional  subscriber  inventory.  These  commitments,  including the inventory
commitment,  total  approximately  $3.6  million and will be paid  during  2001.
Should  the  Company  decide  to  cancel  these   agreements,   it  would  incur
cancellation  penalties  of  any  remaining  unpaid  license  and  non-recurring
engineering fees, the cost of any non-refundable  components purchased on behalf
of Motient,  plus  fifty-percent of any remaining  inventory  commitment.  As of
March 30 2001,  this  cancellation  penalty would have been  approximately  $2.4
million.)

The aggregate  fixed and  determinable  portion of all commitments for inventory
purchases and other fixed  contracts  related to the Core  Wireless  business is
$27.9 million, of which $27.4 million is due in 2001.

Pursuant to its satellite  construction  contract with Boeing Satellite Systems,
XM Radio expects to incur total payment  obligations of $541.3 million, of which
$467.6  million had been paid or accrued as of December 31, 2000.  XM Radio also
had commitments to certain vendors for  engineering  and  construction  services
related to its terrestrial  network.  The total estimated contract value related
to the terrestrial  network was $235.5 million,  of which $80.7 million had been
paid or accrued as of December 31, 2000.  Following  commencement  of commercial
operations,  XM Radio is  obligated  to make  annual  fixed  payments to certain
vendors in conjunction  with long-term  distribution  agreements which expire 12
years  from  the  commencement  of  commercial  operations.  Pursuant  to  these
distribution  agreements,  XM Radio has annual, fixed payment obligations of $35
million for the initial four years from  commencement of commercial  operations.
Additionally, annual  fixed  payment  obligations  beyond the initial four years
range  from $35  million  to $130  million,  and  aggregate  approximately  $400
million. XM Radio must also share a portion of subscription revenues pursuant to
the distribution agreements. XM Radio also is party to certain joint development
agreements and sales, marketing and distribution  agreements with future minimum
payments that are not fixed or estimable but may be significant.

12. EMPLOYEE BENEFITS

Defined Contribution Plan

The Company sponsors a 401(k) defined  contribution plan ("401(k) Savings Plan")
in which all  employees  of Motient can  participate.  The 401(k)  Savings  Plan
provides  for (i) a  Company  match of  employee  contributions,  in the form of
Common Stock, at a rate of $1 for every $1 of an employee's  contribution not to
exceed 4% of an employee's eligible  compensation,  (ii) a discretionary  annual
employer  non-elective  contribution,  (iii) the  option  to have plan  benefits
distributed in the form of installment  payments,  and (iv) the  reallocation of
forfeitures, if any, to active participants.  The Company's matching expense was
$1.4 million for 2000 and $1.1 million for 1999,  excluding costs incurred by XM
Radio under their separate plan.

Employee Stock Purchase Plan

The Company has an Employee Stock Purchase Plan ("Stock Purchase Plan") to allow
eligible  employees to purchase  shares of the Company's  Common Stock at 85% of
the lower of market value on the first and last  business  day of the  six-month
option period. An aggregate of 30,687 shares,  90,867 shares,  and 47,011 shares
of Common  Stock were issued  under the Stock  Purchase  Plan in 2000,  1999 and
1998, respectively.

13. BUSINESS ACQUISITIONS and DISPOSITIONS

2000 Transactions

Sale of Retail Transportation Business  to Aether Systems

In November 2000, the Company sold its retail transportation  business to Aether
Systems, Inc. Concurrently,  Aether entered into two long-term,  prepaid network
airtime  agreements  with a total value of $20 million,  of which $5 million was
paid at closing, pursuant to which Aether will purchase airtime on the Company's
satellite and terrestrial networks. Aether also became an authorized reseller of
the  Company's  eLink and  BlackBerry(tm)  by  Motient  wireless  email  service
offerings.  Aether  acquired  all of the  assets  used or useful  in the  retail
transportation  business,  and  assumed  the  related  liabilities.  Aether also
purchased the existing  inventory in the  business,  and was granted a perpetual
license to use and modify any intellectual  property owned by or licensed to the
Company in connection with the business.

                                      F-42


The purchase price for these assets was $45 million,  plus the then-current book
value of the inventory for the business. All of this amount was paid at closing,
except for $10  million  which was  deposited  in an escrow  account and will be
released  to Motient  upon  satisfaction  of certain  criteria  with  respect to
MobileMAX2(tm),  and $3.7  million  that  was held  back and will be paid to the
Company upon collection of certain accounts receivable. In addition, the Company
has  the  opportunity  to  receive  up  to an  additional  $22.5  million  as an
"earn-out" payment, subject to the satisfaction of certain operating results for
the business during 2001. Of the proceeds  received at closing,  $20 million was
used to immediately repay and permanently  reduce the Revolving Credit Facility.
Proceeds,  if any, from the $10 million  escrow and the $22.5  million  earn-out
will be recorded as  additional  purchase  consideration  when received and will
also be used to repay and permanently reduce the Revolving Credit Facility.  The
net book value of assets sold to Aether was $14.3 million.

Satellite Ventures

In June  2000 the  Company  formed a new  joint  venture  subsidiary,  Satellite
Ventures,  in which it owns 80% of the membership  interests.  The remaining 20%
interest in Satellite Ventures is owned by the Investors. The Investors paid $50
million to  Satellite  Ventures  (in the  aggregate),  in exchange for their 20%
interest.  Of the $50 million  payment  received  by  Satellite  Ventures,  $6.0
million  was  retained  by  Satellite  Ventures  to fund  certain  research  and
development activities,  with the remaining $44 million paid to Motient Services
Inc. ("Motient Services"), which owns Motient's satellite and related assets.

The $44 million  received by Motient Services has been allocated to the deferred
revenue related to a Research and Development agreement,  Asset Purchase Deposit
and the  Investors'  right to  convert  their  minority  interest  in  Satellite
Ventures into shares of the Company's  common stock,  based on each  component's
estimated fair value.  Based on an independent  valuation,  the Company assigned
approximately  $18.6  million  to the  Investors'  conversion  right,  which  is
recorded as common  stock  warrants  in the  accompanying  consolidated  balance
sheets.  The Research and Development  Agreement and Asset Purchase Deposit were
assigned relative fair values of approximately  $14.6 million and $10.8 million,
respectively,  and are reflected in the accompanying  consolidated balance sheet
as other long-term liabilities.  The funds received pursuant to the Research and
Development Agreement are being recognized as service revenue over two years.

In connection with the Aether transaction,  the Company and the other members of
Satellite  Ventures  agreed  to reduce  the  purchase  price in the  asset  sale
agreement between  Satellite  Ventures and Motient Services from $120 million to
$80.5 million, plus one-half of any earn-out  consideration that would have been
received by Motient from  Aether.  This  adjustment  was made to account for the
fact that the  Company  received  consideration  in the  Aether  transaction  in
exchange for assets which  otherwise would have been available to be acquired by
Satellite Ventures.


1999 Transactions

On July 7, 1999, the Company  acquired all outstanding debt and equity interests
in XM Radio  from the other  investor,  other than a $75  million  loan from the
other investor in XM Radio, in exchange for  approximately 8.6 million shares of
the Company's common stock (the "XM Acquisition"). The total consideration given
for the  purchase  of XM Radio  was $129  million.  The  Company  also  incurred
approximately  $0.9  million  for  certain  acquisition  related  expenses.   In
conjunction with the XM Acquisition,  XM Radio was  recapitalized  and issued an
$82  million  convertible  note  receivable  to  the  Company.   This  note  was
convertible  into  Class B  common  shares  of XM  Radio  and  was  subsequently
converted, see below.  Concurrently with this transaction,  XM Radio issued $250
million of Series A subordinated  convertible notes to several new strategic and
financial  investors,   including  General  Motors  Corporation,  Clear  Channel
Investments,  DIRECTV,  Telcom  Ventures,  Columbia Capital and Madison Dearborn
Partners.  XM Radio used $75 million of the  proceeds  from these notes to repay
the  outstanding  loan  payable  to the  former  investor.  As a result of these
transactions,  the Company owned all of the issued and  outstanding  stock of XM
Radio as of July 7, 1999.

On October 8, 1999, XM Radio  consummated  an initial  public  offering (IPO) of
10.2 million  shares of its Class A Common Stock.  The initial  public  offering
price was $12 per share. The Company  purchased 200,000 shares of XM Radio Class
A Common  Stock from the  underwriters  at the IPO price of $12 per share.  As a
result  of the IPO,  all of the  Company's  convertible  notes of XM Radio  were
automatically converted into approximately 11 million shares of XM Radio Class B
common stock. Class B shares have three-for-one voting rights. Additionally, the
$250 million Series A convertible notes of XM Radio converted into approximately
10.8  million  shares of Series A  Convertible  Preferred  Stock of XM Radio and
approximately  16.2  million  shares  of Class A  Common  Stock of XM Radio at a
conversion price of $9.52.

                                      F-43


Prior to July 7, 1999,  the Company's  proportionate  share of XM Radio's losses
were  included in the  accompanying  statement  of*  operations  pursuant to the
equity method of accounting. In connection with the XM Acquisition,  the Company
was required to restate its financial statements for the year ended December 31,
1998 and for the  quarter  ended  March 31, 1999 to record its share of XM Radio
losses previously suspended under the equity method of accounting. This resulted
in the Company recording  additional  losses of approximately  $12.6 million for
the year ended  December 31, 1998,  and $3.5 million for the quarter ended March
31,  1999.  The  acquisition  was  accounted  for under the  purchase  method of
accounting  for business  combinations.  The purchase  price was assigned to the
assets and  liabilities of XM Radio based on their  estimated fair values on the
date  of the  acquisition.  Subsequent  to the  date  of  acquisition  and  upon
valuation  of certain  intangibles  and  licenses,  the fair value of the assets
acquired  in  excess  of the  purchase  price  was $3.2  million  was  allocated
proportionately  to the  non-current  assets  acquired in the  acquisition.  The
results of XM Radio are included in the consolidated  financial statements as of
the effective date of the  acquisition,  July 7, 1999 through December 31, 1999,
and for all of 2000.

On a pro forma  basis,  assuming  the XM  Acquisition  had been  consummated  on
January 1 of each of the periods  presented,  the  following  results would have
been reflected. The pro forma results are based on historical information and do
not  necessarily  reflect  the actual  results  that would have  occurred if the
combination  occurred at the beginning of each year presented,  nor reflects the
future results of the combined entity.



                                                   1999         1998
                                                   ----         ----
                                                  (in thousands, except
                                                     per share data)
                                                         
                                                 $91,071        $87,221
       Loss before extraordinary item           (320,467)            --
       Net Loss                                 (332,599)      (154,063)
       Loss per share                              (7.53)         (3.94)


1998 Transactions

On March 31, 1998, the Company acquired Motient  Communications  Inc.  (formerly
ARDIS Company) for a purchase price of approximately $50 million in cash and $50
million   in  the   Company's   Common   Stock  (the   "Motient   Communications
Acquisition").  The purchase method of accounting for business  combinations was
used for the recording of this  acquisition.  The  operating  results of Motient
Communications  were  included  in  the  Company's  consolidated  statements  of
operations from the date of  acquisition.  The purchase price for the net assets
acquired  was  allocated  ($1.6)  million to net current  assets and net current
liabilities,  $50.4  million to property  and  equipment,  $49.4  million to FCC
licenses  and $1.3  million to  goodwill.  Additionally,  the  Company  incurred
acquisition  costs  of  approximately  $2.6  million  and  recorded   additional
liabilities of approximately $2.3 million.  The combination of the operations of
the Company  and  Motient  Communications  provided  pro forma  revenue of $97.1
million,  pro forma net loss of ($164.2) million,  and pro forma loss per common
share of ($5.11)  for 1998.  The pro forma  information  is  provided  as if the
acquisition had occurred at the beginning of 1998.

14. LEGAL AND REGULATORY MATTERS


Like other mobile  service  providers in the  telecommunications  industry,  the
Company is subject to substantial domestic, foreign and international regulation
including the need for regulatory  approvals to operate and expand the satellite
network and operate and modify subscriber equipment.

The  ownership  and  operation  of the  mobile  satellite  services  system  and
ground-based  two-way  wireless  data  system  are  subject  to  the  rules  and
regulations of the FCC, which acts under authority granted by the Communications
Act and related federal laws. Among other things,  the FCC allocates portions of
the radio  frequency  spectrum to certain  services  and grants  licenses to and
regulates  individual entities using the spectrum.  Motient operates pursuant to
various licenses granted by the FCC.

The  successful  operation of the satellite  network is dependent on a number of
factors,  including the amount of L-band  spectrum made available to the Company
pursuant  to  an  international  coordination  process.  The  United  States  is
currently  engaged in an  international  process of  coordinating  the Company's
access to the spectrum  that has been  assigned to the Company by the FCC.  This
international  coordination  process is not yet  complete.  In the  absence of a
coordination  agreement,  Motient must operate its system on a  non-interference
basis.  The  inability  of the United  States  government  to secure  sufficient
spectrum  could  have an adverse  effect on the  Company's  financial  position,
results of operations and cash flows.


                                      F-44



The Company has the necessary regulatory  approvals,  some of which are pursuant
to  special  temporary  authority,  to  continue  its  operations  as  currently
contemplated.  The  Company has filed  applications  with the FCC and expects to
file applications in the future with respect to the continued operations, change
in  operation  and  expansion  of the network and  certain  types of  subscriber
equipment.  Certain of the Company's  applications  pertaining to future service
have been opposed. While the Company, for various reasons, believes that it will
receive the necessary approvals on a timely basis, it cannot be assured that the
requests  will be granted,  will be granted on a timely basis or will be granted
on conditions that are favorable to the Company.  Any significant changes to the
applications resulting from the FCC's review process or any significant delay in
their approval could adversely affect the Company's financial position,  results
of operations and cash flows.

On  November   30,1999,   the  FCC  granted  two   applications   to  use  TMI's
Canadian-licensed  system  to  provide  service  in the  United  States to up to
125,000  mobile  terminals.  TMI's  system  operates in the MSS L-Band and has a
satellite  footprint that covers the United States.  Motient  appealed the FCC's
grant of these  applications  to the United States Court of Appeals for the D.C.
Circuit.  The United States Court of Appeals affirmed the FCC's decision.  TMI's
entry into the domestic U.S.  marketplace  provides  additional  competition  to
Motient  and  may  increase  TMI's  demand  for  spectrum  in the  international
coordination  process.  The FCC is also currently  considering  applications  to
access the Inmarsat  satellite  system in the L-band to provide mobile satellite
service  in the  United  States.  The grant of any of these  applications  would
provide  additional  competition  and may  further  adversely  impact  Motient's
ability to coordinate spectrum access.

Motient  is  authorized  to build,  launch,  and  operate  three  geosynchronous
satellites  in  accordance  with a  specific  schedule.  The  Company  is not in
compliance with the schedule for commencement and construction of its second and
third satellites and has petitioned the FCC for changes to the schedule. Certain
of these extension requests have been opposed by third parties.  The FCC has not
acted  on the  Company's  requests.  The FCC has the  authority  to  revoke  the
authorizations  for the second and third  satellites and in connection with such
revocation  could exercise its authority to rescind the Company's  license.  The
Company  believes that the exercise of such  authority to rescind the license is
unlikely.  The term of the license for each of the  Company's  three  authorized
satellites  is  ten  years,  beginning  when  the  Company  certifies  that  the
respective  satellite is operating in compliance with the Company's license. The
ten-year term of MSAT-2 began August 21, 1995.  Although the Company anticipates
that the  authorization  for  MSAT-2 is likely to be  extended  in due course to
correspond to the useful life of the satellite and a new license granted for any
replacement satellites, there is no assurance of such extension or grants.

In the first  quarter of 2001,  the Company  applied to assign its  existing FCC
licenses,  authorizations  and pending  applications  relating to its  satellite
operations to a new company,  Mobile  Satellite  Ventures  Subsidiary  LLC ("MSV
Sub"),  that will be a wholly owned  subsidiary of Satellite  Ventures.  In this
application,  the  Company  also  sought FCC  authority  to launch and operate a
next-generation  mobile satellite  system,  which will include the deployment of
satellites and terrestrial base stations operating in the same frequencies as an
integrated network.

XM Radio is also  subject to the rules and  regulations  of the FCC. The FCC has
established certain system development  milestones that must be met in order for
XM Radio to  maintain  its  license to operate its  satellite  system.  XM Radio
believes it is in compliance with the FCC milestones.

One of the bidders for the DARS licenses  filed an  Application  for Review with
the FCC of the  Licensing  Order  which  granted XM Radio its FCC  license.  The
Application for Review alleges that a prior XM Radio shareholder had effectively
taken  control of XM Radio  without the approval of the FCC. The FCC or the U.S.
Court of Appeals has the  authority  to overturn the award of the FCC license to
XM Radio.  XM Radio  believes that it should be able to maintain its FCC license
since the party  referenced is no longer a stockholder of XM Radio.  XM Radio is
unable to predict the outcome of this Application for Review.

In January 1999, a competitor of XM Radio, Sirius Radio, filed an action against
XM Radio for patent  infringement.  In February 2000,  this suit was resolved in
accordance with the terms of a joint development  agreement between XM Radio and
Sirius Radio in which both companies  agreed to  cross-license  their respective
intellectual  property.  If this agreement is terminated due to XM Radio failing
to perform on a material covenant or obligation, the suit could be filed again.


                                      F-45



15. SUPPLEMENTAL CASH FLOW INFORMATION





                                                                                     Years Ended December 31,

                                                                                2000           1999          1998
                                                                                ----           ----          ----
                                                                                          (in thousands)
                                                                                                   
      Cash payments for interest                                             $52,568        $43,590         $32,198

      Noncash investing and financing activities:

          Leased asset and related obligations                                11,238            204             648
          Issuance of Common Stock for acquisitions                               --        129,213          49,781
          Issuance of Restricted Stock                                            --            190           1,780
          Cancellation of Restricted Stock                                    (1,053)          (504)             --
          Additional deferred compensation on non-cash compensation              951          5,322              --
          Issuance and repricing of Common Stock Purchase Warrants             6,202          4,290          26,210
          Capital gain in connection with the sale of stock by XM Radio      129,545         80,663              --
          Conversion of the XM Radio Note Receivable                              --         13,038              --
          Non-cash interest capitalized by XM Radio                           16,302             --              --
          XM Radio accrued system milestone payments                          30,192         15,500              --
          Vendor financing for property in service                             6,937          4,191           1,628
          Use of deposit for XM Radio terrestrial repeater contract            3,422             --             --
          Issuance of Common Stock under the Defined Contribution Plan         1,131          1,115             848


In connection  with the partial pay downs of the Term Loan Facility and Revolver
Loan Facilities,  the Company's  extraordinary  loss on  extinguishment  of debt
includes a pro-rata  portion of the $2.4  million  of  deferred  financing  fees
associated with the placement of the Bank Facility and a pro-rata portion of the
$9.7 million of Guarantee  Warrants held by  shareholder  guarantors of the Bank
Facility.

16. SUBSEQUENT EVENTS

Core Wireless Business

As noted above,  in January and February 2001, the Company sold, in two separate
transactions,  2 million  shares  of its XM Radio  Class A Common  Stock,  at an
average  price of  $16.77  per  share,  for  total  proceeds  of $33.5  million.
Approximately  $8.5 million of the proceeds  were used to repay and  permanently
reduce the Term  Facility.  In  exchange  for the  guarantors  agreeing to waive
certain debt repayment  obligations  for the second sale of shares,  the Company
and the Guarantors have agreed that the first $16.5 million of proceeds received
from the earlier of (i) the closing of the Satellite  Ventures  transaction  and
(ii) any other stated  reduction event to occur in the year 2002 will be used to
pay down the bank financing.

In January  2001,  the Company  entered  into an  agreement,  subject to certain
conditions,  to amend in several respects the terms of its June 2000 transaction
involving  Satellite Ventures.  First, the Investors agreed,  subject to certain
conditions  including  approvals by the FCC, to invest an additional $50 million
to become (in the aggregate) the owners of 40% of the  outstanding  interests of
Satellite Ventures. The Investors will also have an option,  exercisable through
June 29, 2002,  for an additional $40 million,  to increase  their  ownership in
Satellite  Ventures to 50.66% (with each individual  Investor's stake being less
than 20%).  Second,  upon closing of the  transaction,  TMI will  contribute its
satellite  communications  business  assets to  Satellite  Ventures,  along with
Motient's  satellite business assets. TMI will become the owner of approximately
27% of the outstanding equity of Satellite Ventures and will also receive a cash
payment of $7.5 million, as well as a $11.5 million 5-year note.

Upon  closing  of these  transactions,  the  Company  will  sell  its  remaining
satellite  assets to Satellite  Ventures,  in exchange for a cash payment of $45
million and a 5-year,  $15 million  note.  Upon  Closing,  the Company  will own
approximately  33% of the  outstanding  interests  and  be  the  largest  single
shareholder of Satellite Ventures. A portion of Satellite Ventures' cash payment
to TMI at  closing  will be funded by the  Company's  loan of $2.5  million,  in
exchange for a note back in the same amount.

                                      F-46


Under the original  transaction,  at any time until June 29, 2002, the Investors
had certain  rights to elect to convert  their  interests in Satellite  Ventures
into shares of Motient's common stock at a conversion price which will be set at
the time of  exercise,  between $12 and $20 per share,  as specified in the June
Investment  Agreement.  As part of the January agreement,  this right remains in
place, but is limited to an aggregate of $55 million.

Under the terms of the bank facility  waivers  received by Motient in connection
with the January 2001  agreement,  half of all amounts to be received by Motient
from  Satellite  Ventures in  connection  with  Motient's  sale of its satellite
business assets to Satellite Ventures, including the $45 million in cash and $15
million  note  receivable,  will be  used  to  repay  outstanding  amounts,  and
permanently reduce commitments, under Motient's revolving credit facility.

The  consummation  of the  transactions  is subject to receipt of all  necessary
regulatory  governmental  approvals  and  consents,   including,   for  example,
approvals  under  the  Hart-Scott-Rodino  Antitrust  Improvements  Act,  and FCC
approvals  with  respect to both the  transfer of  Motient's  FCC  licenses  and
Satellite Ventures' plans for a new generation integrated  satellite-terrestrial
system,  approvals  by  Canadian  regulatory  authorities  with  respect  to the
transfer  of  TMI's  communications  licenses  to the  new  venture,  and  other
customary conditions relating to due diligence review, third party consents, and
similar matters.  Beginning in January 2002, if certain closing  conditions have
not occurred,  the Company and TMI have certain rights to require the closing to
proceed at such time, and if less than all of the Investors  participate at such
time,  the  Company  and TMI may,  under  certain  circumstances,  purchase  the
interests in Satellite  Ventures that would have  otherwise been acquired by any
such non-participating Investors.

On April 2, 2001,  Motient entered into an agreement for financing in the amount
of $25  million  from Rare  Medium  Group,  Inc.  ("Rare") in the form of a note
payable  at 12.5%  annual  interest  with a  maturity  date,  subject to certain
mutually-agreed upon extensions,  of 180 days from funding, which is expected to
occur by April 6, 2001.  Additionally,  the Company has the potential to receive
up to an additional $25 million of funding,  on comparable  terms, the amount of
which  will be  based on the  market  price of XM Radio  stock.  The  notes  are
collateralized by up to 5 million of the Company's XM Radio shares, and Rare has
the option to exchange the notes for a number of XM Radio shares  equivalent  to
the principal of the note plus any accrued  interest  thereon.  Of the first $25
million  received by the  Company,  the Company  used $6.1  million to repay and
permanently   reduce  its  Term   Facility  and  $14.4  million  is  subject  to
availability upon the approval of the Guarantors.

XM Radio

In March 2001, XM Radio completed a follow-on  offering of 7.5 million shares of
Class A common  stock,  which  yielded  net  proceeds  of $71.9  million,  and a
concurrent   offering  of  7.75%  convertible   subordinated   notes  due  2006,
convertible  into shares of Class A common stock at a conversion price of $12.22
per share, which yielded net proceeds of $120.7 million.

17.  FINANCIAL STATEMENTS OF SUBSIDIARIES

In connection with the Company's acquisition of Motient  Communications on March
31,  1998,  and related  financing  discussed  above,  the Company  formed a new
wholly-owned  subsidiary,  Motient Holdings.  The Company contributed all of its
inter-company notes receivables and transferred its rights,  title and interests
in  Motient  Services  Inc.  and  Motient  Communications  Inc.  (together,  the
"Subsidiary  Guarantors")  to Motient  Holdings,  and Motient  Holdings  was the
acquirer  of Motient  Communications  Inc.  and the issuer of the Senior  Notes.
Motient  Corporation  ("Motient Parent") is a guarantor of the Senior Notes. The
Senior Notes contain  covenants that,  among other things,  limit the ability of
Motient  Holdings and its  Subsidiaries to incur  additional  indebtedness,  pay
dividends  or  make  other  distributions,   repurchase  any  capital  stock  or
subordinated indebtedness, make certain investments, create certain liens, enter
into certain  transactions  with  affiliates,  sell  assets,  enter into certain
mergers and consolidations, and enter into sale and leaseback transactions.

The Senior Notes are jointly and severally  guaranteed on full and unconditional
basis by the Subsidiary  Guarantors and Motient Parent. The following  unaudited
condensed consolidating information for these entities presents:

    o   Condensed consolidating balance sheets as of December 31, 2000 and 1999,
        the condensed consolidating  statements of operations and cash flows for
        the years ended  December 31, 2000,  1999,  and 1998,  and the condensed
        consolidating  statements  of  stockholders'  (deficit)  equity  for the
        period January 1, 1998 through December 31, 2000.

    o Elimination entries necessary to combine the entities comprising Motient .

                                      F-47





                                           Condensed Consolidating Balance Sheet
                                                As of December 31, 2000
                                                       (unaudited)
                                                      (in thousands)


                                                                          Consolidated                                  Consolidated
                                         Subsidiary  Motient                Motient    Motient      XM                     Motient
                                         Guarantors  Holdings Eliminations  Holdings   Parent      Radio  Eliminations     Parent
                                         ----------  -------- ------------  --------   -------     -----  ------------     ------
                                                                                   ASSETS
CURRENT ASSETS:
                                                                                                  
  Cash and cash equivalents             $  2,520        $--        $--     $  2,520  $      --  $  224,903         --     $  227,423
  Accounts receivable - trade, net        14,421         --         --       14,421         --          --         --         14,421
  Inventory                               16,990         --         --       16,990         --          --         --         16,990
  Restricted short-term investments           --     20,709         --       20,709         --      95,277         --        115,986
  Investment in/due from subsidiary          502    130,856   (130,856)         502   (253,310)         --    253,310            502
  Other current assets                    21,423         --         --       21,423        857       8,815         --         31,095
                                         --------   -------  ---------    --------   ---------- ----------    --------     ---------
  Total current assets                    55,856    151,565   (130,856)      76,565   (252,453)    328,995    253,310        406,417
PROPERTY AND EQUIPMENT--NET              127,044         --    (10,843)     116,201         --      59,505         --        175,706
XM RADIO SYSTEM UNDER CONSTRUCTION            --         --         --           --         --     805,563     (5,081)       800,482
GOODWILL AND INTANGIBLES-- NET            51,842         --         --       51,842         --      24,001    (13,375)        62,468

INVESTMENT IN XM RADIO                        --         --         --      288,064         --    (288,064)        --
RESTRICTED INVESTMENTS                         2        582         --          584     10,633      65,889         --         77,106
DEFERRED CHARGES AND OTHER ASSETS--NET    28,130     18,177         --       46,307     (6,037)      9,265         --         49,535
                                         -------   --------  ---------    ---------  ---------- ----------   ---------    ----------
   Total assets                         $262,874   $170,324  $(141,699)   $ 291,499  $  40,207  $1,293,218   $(53,210)    $1,571,714
                                        ========   ========  =========    =========  ========== ===========  ==========   ==========


                                  LIABILITIES AND STOCKHOLDERS' EQUITY (DEFICIT)



CURRENT LIABILITIES:
                                                                                                  
   Accounts payable and accrued         $ 26,628   $ 11,029        $--     $ 37,657    $ 1,323     $66,769   $     --      $ 105,749
   expenses
   Obligations under capital leases
   due within one year                     4,034         --         --        4,034         --         556         --          4,590

   Current portion long-term debt          6,458         --         --        6,458         --          --         --          6,458
   Deferred revenue and other
   liabilities                            17,676         --         --       17,676         --         441         --         18,117
                                         --------   -------    -------     --------     -------    -------   --------      ---------

   Total current liabilities              54,796     11,029         --       65,825      1,323      67,766            --     134,914

DUE TO PARENT/AFFILIATE                  808,570         --   (808,633)         (63)        --          63            --          --
LONG-TERM LIABILITIES:
   Note payable to/from Issuer/ Parent        --     14,000         --       14,000    (14,000)         --            --          --
   Obligations under Bank Financing           --     71,250         --       71,250     40,000          --            --     111,250
   Senior Notes, net of discount              --    328,474         --      328,474         --     261,298            --     589,772
   Other long-term debt                    4,246         --         --        4,246         --          --            --       4,246
   Capital lease obligations               7,863         --         --        7,863         --       1,367            --       9,230
   Deferred revenue and  other
   liabilities                            54,333         --         --       54,333         --       6,772            --      61,105
                                         --------   -------   ---------    --------    --------    -------    ----------   ---------
     Total long-term liabilities          66,442    413,724         --      480,166     26,000     269,437            --     775,603
     Total liabilities                   929,808    424,753   (808,633)     545,928     27,323     337,266            --     910,517
MINORITY INTEREST                             --         --         --           --         --          --       648,313     648,313
STOCKHOLDERS' EQUITY (DEFICIT)          (666,934)  (254,429)   666,934     (254,429)    12,884     955,952      (701,523)     12,884
                                        --------   ---------  --------     ---------   -------     -------    ----------   ---------
   Total liabilities, minority
   interest and stockholders'
   equity (deficit)                     $262,874   $170,324  $(141,699)    $291,499    $40,207   1,293,218      $(53,210) $1,571,714
                                        ========   ========  ==========    ========    =======   ==========    ========== ==========




                                      F-48




                                           Condensed Consolidating Balance Sheet
                                                As of December 31, 1999
                                                    (unaudited)
                                                  (in thousands)


                                                                          Consolidated                                  Consolidated
                                         Subsidiary  Motient                Motient    Motient      XM                     Motient
                                         Guarantors  Holdings Eliminations  Holdings   Parent      Radio  Eliminations     Parent
                                         ----------  -------- ------------  --------   -------     -----  ------------     ------
                                                                                   ASSETS
CURRENT ASSETS:
                                                                                                  
Cash and cash equivalents               $    776  $      --        $--         $776     $   --  $  50,698    $        --  $  51,474
Short-term investments                        --         --         --           --         --     69,472             --     69,472
Accounts receivable-- net                 16,594         --         --       16,594         --         --             --     16,594
Inventory                                 28,616         --         --       28,616         --         --             --     28,616
Restricted short-term investments             --     41,038         --       41,038         --         --             --     41,038
Other current assets                       9,455         --         --        9,455      2,568      1,077                    13,100
                                        --------   --------  ---------    ---------     -------  --------    -----------   --------
   Total current assets                   55,441     41,038         --       96,479      2,568    121,247             --    220,294
PROPERTY AND EQUIPMENT-- NET             126,914         --    (12,949)     113,965         --      2,551             --    116,516
XM RADIO SYSTEM UNDER CONSTRUCTION            --         --         --           --         --    362,358         (5,080)   357,278
GOODWILL AND INTANGIBLES-- NET            51,158         --         --       51,158         --     25,380        (14,327)    62,211
INVESTMENT IN XM RADIO                        --         --         --           --    190,757         --       (190,757)        --
INVESTMENT IN/DUE FROM SUBSIDIARY
                                              --    176,450   (176,450)          --   (148,913)        --        148,913         --
RESTRICTED INVESTMENTS                       320     18,360         --       18,680     12,429         --             --     31,109
DEFERRED CHARGES AND OTHER ASSETS--NET     2,977     26,507         --       29,484    (10,597)     3,653             --     22,540
                                         --------- --------  ---------    ---------   ---------  --------    -----------    -------
   Total assets                         $236,810   $262,355  $(189,399)    $309,766   $ 46,244   $515,189    $   (61,251)   809,948
                                        =========  ========  ==========    ========   =========  ========    ===========    =======



                                         LIABILITIES AND STOCKHOLDERS' (DEFICIT)


CURRENT LIABILITIES:
                                                                                                  
Accounts payable and accrued expenses   $ 31,073   $ 10,866  $      --      $41,939   $  1,266   $ 24,680    $        --     67,885
Obligations under capital leases due
within one year                            5,982         --         --        5,982         --        172             --      6,154
Current portion long-term debt             5,960         --         --        5,960         --         --             --      5,960
Other current liabilities                     --         --         --           --         --      1,646             --      1,646
                                        --------    -------   ---------     -------   ---------  --------    -----------      -----
   Total current  liabilities             43,015     10,866         --       53,881      1,266     26,498             --     81,645
DUE TO PARENT/ AFFILIATE                 769,564         --   (769,626)         (62)   (14,934)        62         14,934         --
LONG-TERM LIABILITIES:
Note payable to/from Issuer/ Parent           --     14,000         --       14,000    (14,000)        --             --         --
Obligations under Bank Financing              --     44,000         --       44,000     41,000         --             --     85,000
Senior Notes, net of discount                 --    327,576         --      327,576         --         --             --    327,576
Other long-term debt                       2,535         --         --        2,535     50,138         --             --     52,673
Capital lease obligations                     35         --         --           35         --        212             --        247
Net assets acquired in excess of           1,333         --         --        1,333         --         --             --      1,333
purchase price
Other long-term liabilities                  555         --         --          555         --      3,400             --      3,955
                                        --------    -------   ---------     -------    -------   --------      ---------   --------
   Total long-term liabilities             4,458    385,576         --      390,034     77,138      3,612             --    470,784
   Total liabilities                     817,037    396,442   (769,626)     443,853     63,470     30,172         14,934    552,429
                                        --------    -------   ---------     -------    -------   --------      ---------   --------
MINORITY INTEREST                             --         --         --           --         --         --        274,745    274,745
STOCKHOLDERS' EQUITY (DEFICIT)          (580,227)  (134,087)   580,227     (134,087)   (17,226)   485,017       (350,930)   (17,226)
                                        ---------   -------   ---------     --------   -------   ---------     ----------  ---------

   Total liabilities, minority
interest, and stockholders' (deficit)   $236,810   $262,355  $(189,399)    $309,766   $ 46,244   $515,189       $(61,251)  $809,948
                                        ========  ==========  ========     =========  ========   =========     ==========  =========




                                      F-49




                                 Condensed Consolidating Statement of Operations
                                           Year ended December 31, 2000
                                                    (unaudited)
                                                   (in thousands)


                                                                          Consolidated                                  Consolidated
                                         Subsidiary  Motient                Motient    Motient      XM                     Motient
                                         Guarantors  Holdings Eliminations  Holdings   Parent      Radio  Eliminations     Parent
                                         ----------  -------- ------------  --------   -------     -----  ------------     ------

REVENUES
                                                                                                  
     Services                            $73,479    $    --        $--      $73,479     $1,200       $ --        $(1,200)   $73,479
     Sales of equipment                   26,372         --         --       26,372         --         --             --     26,372
                                         --------  --------  ---------    ---------   --------  ---------      ----------   -------
       Total Revenues                     99,851         --         --       99,851      1,200         --         (1,200)    99,851
COSTS AND EXPENSES
   Cost of service and operations         75,528         --         --       75,528         --         --             --     75,528
   Cost of equipment sold                 32,843         --         --       32,843         --         --             --     32,843
   Sales and advertising                  35,337         --         --       35,337        117         --             --     35,454
   General and administrative             20,260      1,348         --       21,608      1,125     76,110         (1,217)    97,626
   Depreciation and amortization          34,295         --         --       34,295         --      3,369          1,148     38,812
                                        --------   --------  ---------    ---------   --------   --------     ----------   ---------
   Operating Loss                        (98,412)    (1,348)        --      (99,760)       (42)   (79,479)        (1,131)  (180,412)

Interest and Other Income                    583     18,357    (15,747)       3,193      1,375     27,606           (795)    31,379
Interest Expense                         (17,984)   (55,346)    15,747      (57,583)    (5,667)        --            795    (62,455)
Gain on sale of transportation             5,691         --         --        5,691         --         --             --      5,691
assets
Gain on  Note Payable to Related
Party                                         --         --         --           --     36,779         --             --     36,779
Minority Interest in Loss of
Subsidiaries                                  --         --         --           --         --         --         33,429     33,429
Equity in Loss of Subsidiaries                --   (110,122)   110,122           --   (170,934)        --        170,934         --
                                        --------   ---------   -------     ---------  ---------   -------     ----------   ---------
Net Loss before Extraordinary
Item, Preferred Dividend, and
Beneficial Conversion
Charge                                  (110,122)  (148,459)   110,122     (148,459)  (138,489)   (51,873)       203,232   (135,589)
Extraordinary Loss on
Extinguishment of Debt                        --     (2,900)        --       (2,900)      (135)        --             --     (3,035)
                                        --------   ---------   -------     ---------  ---------   --------     ----------  ---------

Net Loss                                (110,122)  (151,359)   110,122     (151,359)  (138,624)   (51,873)       203,232   (138,624)
XM Radio Beneficial Conversion
Charge                                        --         --         --           --         --   (134,253)        89,815    (44,438)
XM Radio Preferred Stock Dividend
Requirement                                   --         --         --           --         --    (15,212)        10,131     (5,081)
                                        --------    --------    -------     ---------  --------   ---------     ---------- ---------
Net Loss Attributable to Common        $(110,122) $(151,359)   $110,122   $(151,359) $(138,624) $(201,338)      $303,178  $(188,143)
Shareholders
                                       =========   =========   ========   ========== ========== ==========     ========== ==========




                                      F-50




                                 Condensed Consolidating Statement of Operations
                                           Year ended December 31, 1999
                                                     (unaudited)
                                                    (in thousands)



                                                                          Consolidated                                  Consolidated
                                         Subsidiary  Motient                Motient    Motient      XM                     Motient
                                         Guarantors  Holdings Eliminations  Holdings   Parent      Radio  Eliminations     Parent
                                         ----------  -------- ------------  --------   -------     -----  ------------     ------

REVENUES
                                                                                                   
   Services                              $67,653        $--        $--     $ 67,653   $  1,200   $     --     $ (1,200) $    67,653
   Sales of equipment                     23,418         --         --       23,418         --         --           --       23,418
                                        --------  ---------         --     --------   --------   --------     --------  -----------
     Total Revenues                       91,071         --         --       91,071      1,200         --       (1,200)      91,071
COSTS AND EXPENSES
   Cost of service and operations         69,258         --         --       69,258         --         --           --       69,258
   Cost of equipment sold                 29,527         --         --       29,527         --         --           --       29,527
   Sales and advertising                  23,000         --         --       23,000        125         --           --       23,125
   General and administrative             18,434      1,391         --       19,825        850     20,861       (1,200)      40,336
   Satellite and related asset
   impairment charge                      97,419         --         --       97,419         --         --           --       97,419
Depreciation and amortization             54,923         --         --       54,923         --      1,385         (510)      55,798
                                        --------  ---------   --------     ---------   --------   --------    ---------  -----------
   Operating Loss                       (201,490)    (1,391)        --     (202,881)       225    (22,246)         510     (224,392)
Interest And Other Income                    344     20,145    (15,416)       5,073      4,536      2,837       (3,982)       8,464
Unrealized Loss On Note receivable
From XM Radio                                 --         --         --           --     (9,919)        --           --       (9,919)
Unrealized Loss On Note
   Payable To Related Party                   --         --         --           --    (27,399)        --           --      (27,399)
Minority Interest                             --         --         --           --         --         --        7,067        7,067
Equity In Loss Of  Subsidiaries               --   (218,444)   218,444           --   (276,113)        --      269,421       (6,692)
Interest Expense                         (17,298)   (51,357)    15,416      (53,239)   (10,129)    (9,120)       6,560      (65,928)
                                        --------  ---------   --------    ----------   --------   --------    ---------  -----------
   Loss Before Extraordinary Item       (218,444)  (251,047)   218,444     (251,047)  (318,799)   (28,529)     279,576     (318,799)
Extraordinary Loss Of Extinguishment
On Debt                                       --         --         --           --    (12,132)        --           --      (12,132)
                                        --------  ---------   --------     --------    --------   --------    ---------  -----------
   Net Loss                            $(218,444) $(251,047)  $218,444    $(251,047) $(330,931)  $(28,529)    $279,576    $(330,931)
                                        =========  =========   ========   ==========  =========   ========    =========    =========


                                      F-51





                                 Condensed Consolidating Statement of Operations
                                         Year ended December 31, 1998
                                                  (unaudited)
                                                 (in thousands)




                                                                         Consolidated                       Consolidated
                                      Subsidiary   Motient                 Motient     Motient                 Motient
                                      Guarantors   Holdings Eliminations   Holdings    Parent   Eliminations    Parent
                                      ----------   ---------------------   --------    ------   ------------    ------
 REVENUES
                                                                                        
    Services                          $  57,994   $     --          --     $ 57,994   $  1,200   $ (1,200)     $57,994
     Sales of equipment                  29,227         --          --       29,227         --         --       29,227
                                      ---------   --------     -------     --------   --------   ---------   ----------
     Total Revenues                      87,221         --          --       87,221      1,200     (1,200)      87,221

 COSTS AND EXPENSES
    Cost of service and operations       55,781         --          --       55,781         --         --       55,781
    Cost of equipment sold               30,449         --          --       30,449         --         --       30,449
    Sales and advertising                19,038         --          --       19,038        121         --       19,159
    General and administrative           17,355        110          --       17,465      1,066     (1,199)      17,332
    Depreciation and amortization        53,233         --          --       53,233         --       (526)      52,707
                                       ---------   --------     -------    --------  ---------   ---------   ----------
    Operating Loss                      (88,635)      (110)         --      (88,745)        13        525      (88,207)

 INTEREST AND OTHER INCOME                  319     14,908     (11,615)       3,612      8,472     (7,712)       4,372

 EQUITY IN LOSS OF SUBSIDIARIES              --   (116,332)    116,332           --   (150,753)   137,793      (12,960)

 INTEREST EXPENSE                       (28,016)   (36,259)     11,615      (52,660)    (8,298)     7,187      (53,771)
                                       ---------   --------     -------     --------  ---------  ---------   ----------

 NET LOSS                             $(116,332) $(137,793)   $116,332    $(137,793) $(150,566)  $137,793    $(150,566)
                                       =========  =========   ========    =========   =========  ========    =========


                                      F-52




            Condensed Consolidating Statements of Stockholders' Equity (Deficit)
               For the Period from December 31, 1997 through December 31, 2000
                                          (unaudited)
                                        (in thousands)




                                                                          Consolidated                                  Consolidated
                                         Subsidiary  Motient                Motient    Motient      XM                     Motient
                                         Guarantors  Holdings Eliminations  Holdings   Parent      Radio  Eliminations     Parent
                                         ----------  -------- ------------  --------   -------     -----  ------------     ------

                                                                                                  

Balance, December 31, 1997              $ (355,320)  $     --  $       --   $(355,320) $  46,131   $  8,984   $ 346,336   $ 46,131
   Capitalization of Motient Holdings           --    201,580     355,320     556,900         --         --    (556,900)        --
   Acquisition of Motient Communications   109,869         --    (109,869)         --         --         --          --         --
   Issuance of common stock                     --         --          --          --     51,042         --          --     51,042
   Issuance of common stock purchase            --         --          --          --      8,490         --          --      8,490
   warrant
   Amortization of Guarantee Warrants           --         --          --          --      7,628         --          --      7,628
   Amortization of compensation expense         --         --          --          --        252         --          --        252
   Net loss                               (116,332)  (137,793)    116,332    (137,793)  (150,566)   (16,167)    153,960   (150,566)
                                         ----------  ----------  ---------   ---------  ---------  ---------   ---------  ---------
Balance, December 31, 1998                (361,783)    63,787     361,783      63,787    (37,023)    (7,183)    (56,604)   (37,023)

   Issuance of common stock                     --         --          --          --      7,380        304        (304)     7,380
   Acquisition of XM Radio                      --         --          --          --    129,213         --          --    129,213
   Investment in Motient Holdings               --     53,173          --      53,173         --         --     (53,173)        --
   Common stock issued in public                --         --          --          --    115,989         --          --    115,989
   offering
   Amortization of Guarantee Warrants           --         --          --          --      7,372         --          --      7,372
   Initial Public offering                      --         --          --          --         --    114,134    (114,134)        --
   Conversion of Series A convertible           --         --          --          --         --    246,349    (246,349)        --
   debt
   Conversion of subordinated
   convertible                                  --         --          --          --         --    106,955    (106,955)        --
   notes payable to Motient
   Issuance of shares to key executive          --         --          --          --         --        140        (140)        --
   Increase in FCC license, goodwill
   and intangibles                              --         --          --          --         --     51,624     (51,624)        --
   from Motient acquisition
   Charge for beneficial conversion
   feature of  note issued                      --         --          --          --         --      5,520      (5,520)        --
   to Motient
   Non-cash stock compensation                                                                        4,070      (4,070)        --
   Guarantee Warrants revaluation               --         --          --          --        440         --          --        440
   Reduction of Guarantee Warrants for
   extinguishment of debt                       --         --          --          --      9,671         --          --      9,671
   Capital gain in connection with sale
   of stock by XM Radio                         --         --          --          --     80,663         --          --     80,663
   Net Loss                               (218,444)  (251,047)    218,444    (251,047)  (330,931)   (36,896)    287,943   (330,931)
                                          ---------  ---------    -------    ---------  --------- ----------   ---------  ---------
Balance, December 31, 1999                (580,227)  (134,087)    580,227    (134,087)   (17,226)   485,017    (350,930)   (17,226)

   Issuance of common stock                     --           --        --          --      6,745    133,235    (133,235)     6,745
   Investment in subsidiary                 23,415       31,017   (23,415)     31,017         --         --     (31,017)        --
   Reduction of Guarantee Warrants for
   extinguishment of debt                       --           --        --          --      2,390         --          --      2,390
   Amortization of Guarantee Warrants           --           --        --          --      5,842         --          --      5,842
   Capital gain in connection with sale         --           --        --          --    129,545         --          --    129,545
   of stock by XM Radio
   Issuance of warrants to purchase
   common stock                                 --           --        --          --      4,850     63,536     (63,536)     4,850
   Issuance of Satellite Ventures
   investors' option to convert to
   Motient common stock                         --           --        --          --     18,411         --          --     18,411
   Non-cash stock compensation                  --           --        --          --        951      2,743      (2,743)       951
   Sale of convertible redeemable               --           --        --          --         --    323,294    (323,294)        --
   preferred stock
   Net Loss                               (110,122)    (151,359)  110,122    (151,359)  (138,624)   (51,873)    203,232   (138,624)
                                          ---------  ----------- ---------   ---------  ---------  ---------   ---------  ---------
Balance, December 31, 2000               $(666,934)   $(254,429) $666,934   $(254,429)   $12,884   $955,952   $(701,523)   $12,884
                                         ==========  =========== =========  ==========  =========  =========  ==========  =========



                                      F-53


                                  Condensed Consolidating Statement of Cash Flow
                                             As of December 31, 2000
                                                    (unaudited)
                                                   (in thousands)




                                                                          Consolidated                                  Consolidated
                                         Subsidiary  Motient                Motient    Motient      XM                     Motient
                                         Guarantors  Holdings Eliminations  Holdings   Parent      Radio  Eliminations     Parent
                                         ----------  -------- ------------  --------   -------     -----  ------------     ------

                                                                                                  


CASH FLOWS FROM OPERATING ACTIVITIES:

Net loss                                $(110,122)  $(151,359)  $110,122    $(151,359) $(138,624)  $(51,873)  $203,232    $(138,624)
Adjustments to reconcile  net loss to
 net cash (used in) provided by
 operating activities:
Amortization of Guarantee Warrants
 and discount and issuance costs               --        7,338        --        7,338      4,656         --         --       11,994
Depreciation and amortization              34,295           --        --       34,295         --      3,369      1,148       38,812
Gain on sale of transportation assets      (5,691)                             (5,691)        --         --         --       (5,691)
Gain on conversion of convertible
 note payable to related party                 --           --        --           --    (36,779)        --         --      (36,779)
Extraordinary loss on extinguishment
 of debt                                       --        2,900        --        2,900        135         --         --        3,035
Non cash stock compensation of
 XM Radio                                      --           --        --           --         --      2,743         --        2,743
Minority Interest                              --           --        --           --         --         --    (33,429)     (33,429)
Changes in assets & liabilities, net
 of acquisitions and dispositions:
  Inventory                                 1,298           --        --        1,298         --         --         --        1,298
  Prepaid in-orbit insurance                  863           --        --          863         --         --         --          863
  Trade accounts receivable                 1,388           --        --        1,388         --         --         --        1,388
  Other current assets                     (9,910)          --        --       (9,910)     1,711     (7,738)        --      (15,937)
  Accounts payable and accrued
   expenses                                (2,878)         163        --       (2,715)        55     16,052         --       13,392
  Accrued interest on Senior Note              --           31        --           31         --         --         --           31
  Deferred trade payables                  (2,455)          --        --       (2,455)        --         --         --       (2,455)
  Deferred Items--net                      33,876           --        --       33,876       (899)        --         --       32,977
                                         ---------     --------  --------    ---------  ---------  --------   --------    ----------
Net cash (used in) provided by
 operating activities                     (59,336)    (140,927)  110,122      (90,141)  (169,745)   (37,447)   170,951     (126,382)

CASH FLOWS FROM INVESTING ACTIVITIES:
Payment of Senior Note interest from
 escrow                                        --       41,006        --       41,006         --         --         --       41,006
Additions to property & equipment         (22,186)          --        --      (22,186)        --    (51,378)        --      (73,564)
Proceeds from sale of transportation
 assets                                    20,000           --        --       20,000         --         --         --       20,000
Asset Sale agreement to Satellite
 Ventures                                  10,836           --        --       10,836         --         --         --       10,836
System under construction                      --           --        --           --         --   (414,889)        --     (414,889)
Purchase/maturity of short-term
 investments, net                              --           --        --           --         --     69,472         --       69,472
Other investing activities by
 XM Radio                                      --           --        --           --         --    (56,268)        --      (56,268)
Purchase of long-term, restricted
 investments                                  318       (5,020)       --       (4,702)     1,796   (106,338)        --     (109,244)
                                         ---------     ---------  -------    ---------  ---------  ---------  ---------   ----------
Net cash (used in) provided by
 investing activities                       8,968       35,986        --       44,954      1,796   (559,401)        --     (512,651)


                                      F-54




CASH FLOWS FROM FINANCING ACTIVITIES:
                                                                                                  
  Issuance of Common and
   Preferred Stock                             --           --        --           --      5,614    456,529         --      462,143
  Proceeds from issuance of
   conversion option to the
   investors of Satellite Ventures             --           --        --           --     18,411         --         --       18,411
  Funding from parent/subsidiary           58,536       77,691  (110,122)      26,105    144,846         --   (170,951)          --
  Principal payments under capital
   leases                                  (3,467)          --        --       (3,467)        --         --         --       (3,467)
  Principal payments under vendor
   lease                                   (2,957)          --        --       (2,957)        --         --         --       (2,957)
  Proceeds from Senior Secured Notes
   and Stock Purchase Warrants                 --           --        --           --         --    322,889         --      322,889
  Proceeds from bank financing, net            --       27,250        --       27,250     (1,000)        --         --       26,250
  Debt issuance costs                          --           --        --           --         78     (8,365)        --       (8,287)
                                        ----------     -------- ---------   ----------  ---------   --------  --------     ---------
  Net cash provided by (used in)
   financing activities                    52,112      104,941  (110,122)      46,931    167,949    771,053   (170,951)     814,982

  Net increase in cash and cash
   equivalents                              1,744           --        --        1,744         --    174,205         --      175,949
  CASH & CASH EQUIVALENTS, beginning
   of period                                  776           --        --          776         --     50,698         --       51,474
                                         ---------     -------- ---------   ----------  --------    --------   --------    ---------
  CASH & CASH EQUIVALENTS, end of
   period                                  $2,520          $--       $--       $2,520        $--   $224,903        $--     $227,423
                                         =========     ======== =========   ==========  =========   ========   =========   =========


                                      F-55



                                  Condensed Consolidating Statement of Cash Flow
                                              As of December 31, 1999
                                                   (unaudited)
                                                  (in thousands)





                                                                          Consolidated                                  Consolidated
                                         Subsidiary  Motient                Motient    Motient      XM                     Motient
                                         Guarantors  Holdings Eliminations  Holdings   Parent      Radio  Eliminations     Parent
                                         ----------  -------- ------------  --------   -------     -----  ------------     ------


CASH FLOWS FROM OPERATING ACTIVITIES:
                                                                                                  
Net loss                                $(218,444)  $ (251,047) $218,444    $(251,047) $ (330,931) $ (28,529) $279,576    $(330,931)
Adjustments to reconcile net loss
   to net cash (used in) provided
   by operating activities:
Amortization of Guarantee Warrants
   and debt related costs                      --        7,261        --        7,261       8,563        477        --       16,301
   Depreciation and amortization           54,923           --        --       54,923          --      1,385      (510)      55,798
   Satellite and related assets
   impairment charge                       97,419           --        --       97,419          --         --        --       97,419
   Extraordinary loss                          --           --        --           --      12,132         --        --       12,132
   Equity in loss in XM Radio                  --           --        --           --       6,692         --        --        6,692
   Non cash stock compensation
   of XM Radio                                 --           --        --           --          --      4,210        --        4,210
   Non-cash charge for beneficial
   conversion feature of note
   issued to parent                            --           --        --           --          --      5,520    (5,520)          --
   Minority Interest                           --           --        --           --          --         --    (7,067)      (7,067)
   Net unrealized loss on marketable
   securities                                  --           --        --           --      37,318         --        --       37,318
   Changes in assets & liabilities:
   Inventory                              (10,023)          --        --      (10,023)         --         --        --      (10,023)
   Trade accounts receivable               (3,897)          --        --       (3,897)         --         --        --       (3,897)
   Other current assets                    (5,799)          20        --       (5,779)      3,451       (963)    3,842          551
   Accounts payable and accrued
   expenses                                11,073          151        --       11,224       1,266      5,126      (901)      16,715
   Accrued interest on Senior Note             --          (83)       --          (83)         --         --        --          (83)
   Deferred trade payables                 (1,135)          --        --       (1,135)         --         --        --       (1,135)
   Deferred Items--net                        171           --        --          171      (1,148)        --        --         (977)
                                          --------   ----------  --------    ---------   ---------  ---------  --------    ---------
   Net cash (used in) provided by
   operating activities                   (75,712)    (243,698)  218,444     (100,966)   (262,657)   (12,774)  269,420     (106,977)
CASH FLOWS FROM INVESTING ACTIVITIES:
   Additions to property & equipment      (13,810)          --        --      (13,810)         --     (1,728)       --      (15,538)
   Purchase of XM Radio note receivable        --           --        --           --     (21,419)        --        --      (21,419)
   Investment in XM Radio                      --           --        --           --      (2,400)        --        --       (2,400)
   XM Radio Acquisition costs                  --           --        --           --        (951)       163        --         (788)
   Payment of escrow interest                  --       41,006        --       41,006          --         --        --       41,006
   System under construction                   --           --        --           --          --   (141,154)       --     (141,154)
   Purchase of short-term investments
   by XM Radio                                 --           --        --           --          --    (69,472)       --      (69,472)
   Other investing activities by
   XM Radio                                    --           --        --           --          --     (3,422)       --       (3,422)
   Purchase of long-term, restricted
   investments                              1,180       (4,427)       --       (3,247)     (1,669)        --        --       (4,916)
                                          --------   ----------  --------    ---------   ---------  ---------  --------    ---------
   Net cash used in investing activities  (12,630)      36,579        --       23,949     (26,439)  (215,613)       --     (218,103)


                                      F-56




CASH FLOWS FROM FINANCING ACTIVITIES:
                                                                                                  
   Common Stock                                --           --        --           --     122,253    114,428        --      236,681
   Funding from parent/subsidiary          94,105      195,119  (218,444)      70,780     198,640         --  (269,420)          --
   Principal payments under capital
   leases                                  (5,982)          --        --       (5,982)         --         --        --       (5,982)
   Principal payments under Vendor
   Financing                               (1,290)          --        --       (1,290)         --         --        --       (1,290)
   Proceeds from Series A subordinated
   convertible note of XM Radio                --           --        --           --          --    250,000        --      250,000
   Proceeds from bank financing                --       65,000        --       65,000          --         --        --       65,000
   Proceeds from note payable to
   related parts                               --           --        --           --      21,500         --        --       21,500
   Repayment of XM Radio Bank loan             --           --        --           --          --        (73)       --          (73)
   Repayment of loan by XM Radio               --           --        --           --          --    (75,000)       --      (75,000)
   Repayment of revolver                       --      (53,000)       --      (53,000)         --         --        --      (53,000)
   Repayment of term loan                      --           --        --           --     (59,000)        --        --      (59,000)
   Proceeds from reduction of interest
   rate swap                                   --           --        --           --       6,009         --        --        6,009
   Debt issuance costs                         --           --        --           --        (306)   (10,270)       --      (10,576)
                                           -------    --------- ---------     --------    --------   --------  ---------    --------
   Net cash provided by (used in)
   financing activities                    86,833      207,119  (218,444)      75,508     289,096    279,085  (269,420)     374,269
Net (decrease)increase in cash             (1,509)          --        --       (1,509)         --     50,698        --       49,189
and cash equivalents
CASH & CASH EQUIVALENTS, beginning
of period                                   2,285           --        --        2,285          --         --        --        2,285
                                          -------     --------- ---------     --------   --------   --------  ---------    --------
CASH & CASH EQUIVALENTS, end of period    $   776     $     --  $     --     $    776    $     --   $ 50,698  $     --     $ 51,474
                                          =======     ========= =========    ========    =========  ========  =========    ========



                                      F-57



                                  Condensed Consolidating Statement of Cash Flow
                                              As of December 31, 1998
                                                   (unaudited)
                                                 (in thousands)






                                                                                 Consolidated                           Consolidated
                                            Subsidiary  Acquisition              Acquisition    Motient                   Motient
                                            Guarantors   Company    Eliminations   Company       Parent    Eliminations    Parent
                                            ----------   -------    ------------   -------       ------    ------------    ------
CASH FLOWS FROM OPERATING ACTIVITIES:
                                                                                                     
Net Loss                                     $(116,332) $(137,793)   $ 116,332    $(137,793)    $(150,566)  $  137,793    $(150,566)
Adjustments to reconcile net
loss to  net cash used in
operating activities:

Amortization of Guarantee Warrants, debt
discount and issuance costs                         --     10,845           --       10,845         5,326           --       16,171
   Depreciation and amortization                53,233         --           --       53,233          (526)          --       52,707
   Equity in loss in XM Radio                       --         --           --           --        12,960           --       12,960
   Changes in assets & liabilities inventory    21,947         --           --       21,947            --           --       21,947
   Prepaid in-orbit insurance                    1,183         --           --        1,183            --           --        1,183
   Accounts receivable--trade                     (105)        --           --         (105)           --           --         (105)
   Other current assets                          7,185         --           --        7,185            55           --        7,240
   Accounts payable and accrued expenses       (14,484)        --           --      (14,484)           12           --      (14,472)
   Accrued interest on Senior notes                 --     10,715           --       10,715            --           --       10,715
   Deferred trade payables                      (6,567)        --           --       (6,567)           --           --       (6,567)
   Deferred items--net                          (7,396)        --           --       (7,396)           --           --       (7,396)
                                               --------  ---------   ---------    ----------    ----------  -----------    ---------
   Net cash used in operations                 (61,336)  (116,233)     116,332      (61,237)     (132,739)     137,793      (56,183)
CASH FLOWS FROM INVESTING ACTIVITIES:
Additions to property & equipment              (12,470)        --           --      (12,470)           --           --      (12,470)
Cash paid for acquisition of Motient                --    (52,373)          --      (52,373)           --           --      (52,373)
Communications
Purchase of long-term, restricted
investments                                     (1,500)  (116,109)          --     (117,609)      (28,152)          --     (145,761)
Payment of escrow interest                          --     20,633           --       20,633            --           --       20,633
                                               --------  ---------   ---------    ----------    ----------  -----------    ---------
   Net cash used in investing activities       (13,970)  (147,849)          --     (161,819)      (28,152)          --     (189,971)
CASH FLOWS FROM FINANCING ACTIVITIES:
   Proceeds from issuance of Common Stock           --         --           --           --           412           --          412
   Funding from parent                          83,829    118,307     (116,332)      85,804        51,989     (137,793)          --
   Principal payments under capital Leases      (3,395)        --           --       (3,395)           --           --       (3,395)
   Payments under Vendor Financing                 (16)        --           --          (16)           --           --          (16)
   Repayment of bank financing                      --   (166,000)          --     (166,000)      100,000           --      (66,000)
   Payments on long-term debt                   (4,933)        --           --       (4,933)           --           --       (4,933)
   Debt issuance costs                              --    (14,735)          --      (14,735)           --           --      (14,735)
   Proceeds from Notes and stock purchase           --    326,510           --      326,510         8,490           --      335,000
                                               --------  ---------    --------    ----------    ----------  -----------    ---------
warrants
   Net cash provided by financing
   activities                                   75,485    264,082     (116,332)     223,235       160,891     (137,793)     246,333
Net increase in cash and cash equivalents          179         --           --          179            --           --          179
CASH and CASH EQUIVALENTS, beginning
of period                                        2,106         --           --        2,106            --           --        2,106
                                               --------  ---------    ---------     --------    ----------  -----------    ---------
CASH and CASH EQUIVALENTS, end of period      $  2,285   $     --    $      --     $  2,285    $       --   $       --      $ 2,285
                                              ========   =========    =========     ========    ==========   ==========      =======




                                      F-58




                                        QUARTERLY FINANCIAL DATA (unaudited)

                               (dollars in thousands, except for per share data)





                                             2000-Quarters                                    1999-Quarters
                                 1st        2nd        3rd         4th        1st          2nd           3rd           4th
                                 ---        ---        ---         ---        ---          ---           ---           ---

                                                                                             
Revenues                        $22,170   $ 25,689   $26,657      $25,335  $  20,230    $  22,873      $  22,970     $  24,998
Operating expenses (1)           60,506    62,202     80,768       76,787     45,688       47,171         56,910       165,694
                              ---------    ------     ------      -------   --------    ---------      ---------     ---------
Loss from operations            (38,336)  (36,513)   (54,111)     (51,452)   (25,458)     (24,298)       (33,940)     (140,696)
Interest and other income
(expense)                        (9,779)   (6,078)    (6,263)      (8,956)   (14,191)     (14,998)       (17,146)      (11,129)
Gain on sale of
transportation                       --        --         --        5,691         --           --             --            --
assets
Unrealized loss on note
receivable from XM Radio             --        --         --           --         --       (9,919)            --            --
Unrealized (loss) gain on
note payable to related
party                            36,779        --         --           --         --       10,036         (2,807)      (34,628)
Minority Interest                 7,342     3,341     13,391        9,355         --           --             --         7,067
Equity in loss of XM Radio           --        --         --           --     (3,494)      (3,198)            --            --
                              ---------   -------   --------    ---------  ---------  -----------    -----------   -----------
Loss before extraordinary
item                             (3,994)  (39,250)   (46,983)     (45,362)   (43,143)     (42,377)       (53,893)     (179,386)
Extraordinary loss on
extinguishment of debt               --      (417)        --       (2,618)        --           --        (12,132)           --
                              ---------   -------   --------    ---------  ---------  -----------    -----------   -----------
Net Loss                         (3,994)  (39,667)   (46,983)     (47,980)   (43,143)     (42,377)       (66,025)     (179,386)
XM Radio Preferred Dividend
and Beneficial Conversion
Charge                             (506)     (745)   (46,352)      (1,916)        --           --             --            --
                              ----------  --------  ---------    ---------   --------    ---------      ---------    ----------
Net Loss attributable to
common shareholders              (4,500)  (40,412)   (93,335)     (49,896)   (43,143)     (42,377)       (66,025)     (179,386)
Basic and Diluted Loss Per
Share of common stock
before extraordinary item         $(0.09)  $(0.81)   $ (1.88)     $ (0.96)   $ (1.34)      $(1.31)        $(1.18)     $  (3.70)
Basic and Diluted Loss Per
Share extraordinary item             --    $(0.01)        --      $ (0.05)        --           --         $(0.27)           --
                                ---------  -------   --------      -------    --------   ---------     ----------       -------
Basic and Diluted Net loss
per common share (2)              $(0.09)  $(0.82)    $(1.88)     $ (1.01)   $ (1.34)      $(1.31)        $(1.45)     $  (3.70)
Weighted-average common
shares outstanding during
the period                       49,094    49,502     49,532       49,564     32,225       32,416         45,421        48,500
Market price per share (3)
   High                          $41.50    $24.31     $16.06       $14.31      $8.31       $21.94         $23.50        $23.13
   Low                           $14.25     $7.88     $10.25        $3.31      $3.94       $ 7.19         $15.38        $ 8.31


- ----------

(1) Operating  expenses  include  charges of  approximately  $3.6 million in the
    third  quarter  of  2000 and $4.2  million  in the  fourth  quarter  of 1999
    related to the  realizability  of  the  Company's  inventory.  In  addition,
    operating  expenses include a  $97.4 million charge in the fourth quarter of
    1999  relating  to  the  impairment  of  the  Company's  investment  in  the
    satellite and related assets. See footnote 2 to the financial statements.

(2) Loss per  share  calculations  for  each of the  quarters  are  based on the
    weighted average number of shares  outstanding for each of the periods,  and
    the sum of the quarters is not equal to the full year loss per share amount.

(3) The  Company's  Common  Stock is listed  under the symbol MTNT on the Nasdaq
    National  Market System.  The quarterly high and low sales price  represents
    the closing  price in the Nasdaq  National  Market  System.  The  quotations
    represent  inter-dealer  quotations,  without retail  markups,  markdowns or
    commissions,  and may not necessarily  represent actual transactions.  As of
    March 30, 2001,  there  were  347  stockholders  of  record of the Company's
    Common Stock.

                                      F-59




Selected Financial Data

Set forth  below is the  selected  financial  data for the  Company for the five
fiscal years ended December 31, 2000:



                                              2000        1999        1998         1997           1996
                                              ----        ----        ----         ----           ----
                                                 (dollars in thousands, except for per share data)
                                                                               
       Revenues                             $99,851    $ 91,071    $ 87,221    $ 44,214       $ 27,730
       Net loss                            (138,624)   (330,931)   (150,566)   (119,207)      (134,638)
       XM Radio beneficial conversion
       and conversion charges               (49,519)         --          --          --             --
       Net Loss to Common Shareholders     (188,143)   (330,931)   (150,566)   (119,207)      (134,638)
       Basic and diluted Loss per Common
       Share                                 $(3.81)    $ (8.33)   $  (4.94)   $  (4.74)      $  (5.38)
       Dividends on Common Stock (1)           None        None        None        None           None
       Consolidated Balance Sheet Data:
       Cash and Cash Equivalents           $227,423     $51,474    $  2,285    $  2,106       $  2,182
       System Under Construction            800,482     357,278          --          --             --
         Total Assets                     1,571,714     809,948     489,794     311,447        350,173
       Current Liabilities                  131,914      81,645      44,971      59,433         57,669
       Long-Term Liabilities                775,603     470,784     481,846     205,883        133,804
       Minority Interest                    648,313     274,745          --          --             --
       Stockholders' Equity (Deficit)        12,884     (17,226)    (37,023)     46,131        158,700


- ----------

(1) The Company has paid no dividends on its Common  Stock since  inception  and
    does not  plan to pay  dividends  on its  Common  Stock  in the  foreseeable
    future.  In addition,  the payment of  dividends is subject to  restrictions
    described  in  Note  8  to  the  financial   statements   and  discussed  in
    Management's Discussion and Analysis.


                                      F-60








                    REPORT OF INDEPENDENT PUBLIC ACCOUNTANTS





To  Motient Corporation:

We have audited, in accordance with generally accepted auditing  standards,  the
consolidated  financial  statements of Motient  Corporation and  Subsidiaries (a
Delaware  corporation)  included  in this Form 10-K and have  issued  our report
thereon dated April 2, 2001.  Our audits were made for the purpose of forming an
opinion on the basic financial statements taken as a whole. The schedules listed
in Item 14 are the responsibility of the Company's  management and presented for
purposes of complying with the Securities  and Exchange  Commission's  rules and
not part of the basic financial statements.  These schedules have been subjected
to the  auditing  procedures  applied  in the  audits  of  the  basic  financial
statements  and, in our opinion,  fairly state,  in all material  respects,  the
financial  data  required  to be set  forth  therein  in  relation  to the basic
financial statements taken as a whole.

Our report on the financial  statements  includes an explanatory  paragraph with
respect to the  assumption  that the Company will continue as a going concern as
discussed in Note 1 to the financial statements.


/s/ Arthur Andersen LLP
Vienna, Virginia,
April 2, 2001



                                      S-1



                                                                     SCHEDULE I

                               MOTIENT CORPORATION
                  CONDENSED FINANCIAL INFORMATION OF REGISTRANT
                              (Parent Company Only)
                            Condensed Balance Sheets
                  ---------------------------------------------



(in thousands)                                                 December 31,
                                                               ------------
                                                          2000             1999
                                                          ----             ----
ASSETS

                                                                 
Current portion of prepaid interest rate swap            $ 611           $2,445
Other current assets                                       246              123
Long term portion of prepaid interest rate swap            ---              611
Total current assets                                       ---              ---
Restricted long-term investments                        10,633           12,429
Note receivable from subsidiary                         14,000           14,000
Deferred charges and other long-term assets              1,452            2,441
Investment in subsidiaries                              27,265           43,129
                                                        ------           ------

Total assets                                           $54,207          $75,178
                                                      ========         ========


LIABILITIES AND STOCKHOLDERS' EQUITY (DEFICIT)

Accounts payable and accrued expenses                   $1,323           $1,266
Term Loan payable                                       40,000           41,000
Note payable to related party                              ---           50,138
                                                        ------           ------
  Total Liabilities                                     41,323           92,404

Stockholders' Deficit:
  Preferred Stock                                          ---              ---
  Common Stock                                             495              485
  Additional paid-in capital                           982,621          844,181
  Common stock purchase warrants                        80,292           63,290
  Deferred compensation                                   (134)          (6,536)
  Unamortized guarantee warrants                       (11,504)         (18,384)
  Accumulated loss                                  (1,038,886)        (900,262)
                                                    -----------        ---------
Total Stockholders' Equity (Deficit)                    12,884          (17,226)
Total Liabilities, Minority Interest
  and Stockholders' Deficit                            $54,207          $75,178
                                                       =======          =======



                                      S-2





                                                                      SCHEDULE I

                               MOTIENT CORPORATION
                  CONDENSED FINANCIAL INFORMATION OF REGISTRANT
                              (Parent Company Only)
                       Condensed Statements of Operations

                  ----------------------------------------------



                                                                         For the Years Ended December 31,
(in thousands)                                                                  2000             1999              1998
                                                                                ----             ----              ----
                                                                                                     
Management fees from wholly-owned subsidiary                                  $1,200           $1,200            $1,200
Operating Expenses
            Sales and advertising                                                117              125               121
            General and administrative                                         1,125              850             1,066
                                                                               -----              ---             -----
            Total operating expenses                                           1,242              975             1,187
                                                                               -----              ---             -----

Operating Loss                                                                   (42)             225                13
Interest and other income                                                      1,375            4,536             8,472
Gain on note payable to related party                                         36,779           (9,919)              ---
Unrealized loss on note payable to related party                                 ---          (27,399)              ---
Interest expense                                                              (5,667)         (10,129)           (8,298)
                                                                              -------         --------           -------
(Loss) income before equity in loss of subsidiaries                           32,445          (42,686)              187

            Equity in loss of subsidiaries - Note A                         (170,934)        (276,113)         (150,753)
                                                                           ---------        ---------         ---------

Net Loss before extraordinary item                                          (138,489)        (318,799)         (150,566)
Extraordinary loss on debt extinguishment                                       (135)         (12,132)              ---
                                                                            ---------        ---------         ---------
Net Loss                                                                    (138,624)        (330,931)         (150,566)

XM Radio Preferred Stock Dividend Requirement                                (5,081)               --                --
XM Radio Beneficial Conversion Conversion Charges                           (44,438)               --                --
                                                                            --------         ---------          --------


Net Loss Attributable to Common Shareholders                              $(188,143)         $(330,931)       $(150,566)
                                                                          ==========         =========        ==========


                                      S-3




                                                                      SCHEDULE I

                               MOTIENT CORPORATION
                  CONDENSED FINANCIAL INFORMATION OF REGISTRANT
                              (Parent Company Only)
                       Condensed Statements of Cash Flows
                  ---------------------------------------------



                                                                          For the Years Ended December 31,

(in thousands)                                                                2000          1999                1998
                                                                              ----          ----                ----

                                                                                                  
Cash Provided from Operating Activities                                     $1,189       $13,456            $ 18,014
Investing Activities
          Purchase of XM Radio note receivable                                  --       (21,419)                 --
          Investment in XM Radio                                                --        (3,351)                 --
          Sale (purchase) of restricted securities                           1,796        (1,669)            (28,152)
          Advances to and investment in subsidiaries                       (26,461)      (77,473)            (98,764)
                                                                          --------      --------            --------
Cash used in investing activities                                          (24,665)     (103,912)           (126,916)
Financing Activities
          Proceeds from the issuance of Warrants                                --            --               8,490
          Proceeds from reduction of interest rate swap                         --         6,009                  --
          Proceeds from note payable to related party                           --        21,500                  --
          Debt issuance costs                                                   78          (306)                 --
          Proceeds from issuance of conversion option to the
          investors of Satellite Ventures                                   18,411            --                  --



          Proceeds (repayment of) Term Facility                             (1,000)       (59,000)           100,000
          Proceeds from sale of Common Stock                                 5,987        122,253                412
                                                                             -----        -------            -------
Cash Provided by Financing Activities                                       23,476         90,456            108,902
                                                                            ------         ------            -------

Increase for the period                                                         --            --                  --
Beginning of period                                                             --            --                  --
                                                                            ------         -----               -----

End of period                                                                  $--           $--                $ --
                                                                              ====          ====                ====




                                      S-4



                                                                      SCHEDULE I

                               MOTIENT CORPORATION
                  CONDENSED FINANCIAL INFORMATION OF REGISTRANT
                              (Parent Company Only)

                     Notes to Condensed Financial Statements

Note A - Background and Basis of Presentation

Motient  Corporation  (with its  subsidiaries,  "Motient" or the "Company") is a
leading  provider  of two-way  mobile  communications  services  principally  to
business-to-business  customers  and  enterprises.  Motient  serves a variety of
markets  including  mobile  professionals,   telemetry,   transportation,  field
service,  and  nationwide  voice  dispatch,  to customers in the United  States.
Motient  provides  its  eLink(sm)  brand  two-way  wireless  email  services  to
customers accessing email through corporate servers,  Internet Service Providers
("ISP"),  Mail Service Provider ("MSP") accounts,  and paging network suppliers.
In November 2000, Motient launched its BlackBerry (tm) by Motient wireless email
solution,  developed  by Research in Motion  ("RIM") and  licensed to operate on
Motient's  network.  BlackBerry  by  Motient  is  designed  for large  corporate
accounts  operating in a Microsoft  Exchange  environment and contains  advanced
encryption  features.  Together,  the Company  considers  these  two-way  mobile
communications services to be its Core Wireless Business.

Additionally,  as of  December  31,  2000,  Motient  had an equity  interest  of
approximately  33.1% (or 21.3% on a fully diluted  basis) in XM Satellite  Radio
Holdings Inc. ("XM Radio"),  a public company;  and, as of December 31, 2000 the
Company  controlled  XM Radio through  Board of Director  membership  and common
stock voting rights.

In January  2001,  pursuant to FCC  approval  to cease to control XM Radio,  the
number of directors  appointed  by the Company to XM Radio's  Board of Directors
was  reduced  to less  than  50% of the XM  Radio  directors,  and  the  Company
converted  a portion  of its  super-voting  Class B Common  Stock of XM Radio to
Class A Common  Stock.  As a result,  the Company  ceased to be in control of XM
Radio.  The carrying  value of the Company's  investment in XM Radio pursuant to
the  equity  method of  accounting  was  $288,064  (or  $17.19  per share) as of
December  31, 2000.  As of March 29,  2001,  the market price of XM Radio common
stock was $7.00 per share,  $10.19 per share less than the  Company's  carrying
value.  Pursuant to the equity  method of  accounting,  beginning  in 2001,  the
Company  will be required to assess,  considering  market and other  appropriate
factors,  whether a permanent impairment of the Company's investment in XM Radio
has occurred and an impairment loss recognized.

The operations and financing of XM Radio are maintained  separate and apart from
the  operations  and  financing of Motient.  Please refer to XM Radio's  audited
financial  statements,  included in its reports and filings with the  Securities
and Exchange Commission ("SEC"), for more detail about its business plan, risks,
and financial results.


                                      S-5




On June  29,  2000,  the  Company  formed  a joint  venture  subsidiary,  Mobile
Satellite Ventures LLC ("Satellite Ventures"),  in which the Company owns 80% of
the membership  interests.  The remaining 20% interest in Satellite  Ventures is
owned by a group of three  investors  which paid an  aggregate of $50 million in
exchange for their 20% interest.

On November 29, 2000, Motient Services Inc. ("Motient Services"), a wholly-owned
subsidiary of Motient  Holdings  (defined below) sold its retail  transportation
assets to Aether Systems, Inc. ("Aether"). Aether purchased all of the assets in
Motient  Services's  wireless  communications  business  for the  transportation
market, including its satellite-only  MobileMAX2(TM) multi-mode mobile messaging
business,  and Aether  assumed  all  liabilities  related to the  transportation
business.  In addition,  Aether entered into separate  long-term prepaid airtime
agreements with the Motient Services and Motient  Communications  Inc. ("Motient
Communications," formerly ARDIS Company), as sister company to Motient Services.

In the Parent Company-only  financial  statements,  the Company's  investment in
subsidiaries  is  stated at cost less  losses of  subsidiaries.  The net loss of
subsidiaries is included in these financial  statements using the equity method.
Certain amounts have been reclassified from prior years. The Company has entered
into various  transactions with its subsidiaries  which have not been eliminated
in the December  31, 2000  audited  consolidated  financial  statements  and are
summarized as follows:





                                                   2000     1999     1998
                                                   ----     ----     ----

                                                           
Investment in and amounts due from subsidiaries  $7,579    $13,038  $12,834
Management fees                                   1,200      1,200    1,200
Interest income                                     795      3,982    7,712
Interest expense allocated to subsidiaries        4,112      4,211    3,804



Note B - Investment in Subsidiaries and Liquidity and Financing Requirements

As stated in Note A, the Company  records its investment in  subsidiaries on the
equity  method.  In connection  with the Motient  Communications  Acquisition in
1998, the Company formed a new wholly-owned  subsidiary  ("Motient Holdings") to
hold the  stock of all  current  wholly-owned  operating  subsidiaries.  Motient
Holdings has two wholly-owned subsidiaries. Additionally, the Company has equity
investments  in XM Radio and  Satellite  Ventures.  The  recoverability  of such
investments  is subject to the risks  associated  with  expanding  a  developing
business. Specifically,  future operating results will be subject to significant
business,  economic,  regulatory,  technical, and competitive  uncertainties and
contingencies. Depending on their extent and timing, these factors, individually
or in the aggregate, could have an adverse effect on the Subsidiaries' financial
condition and future results of operations.


                                      S-6



Summary of Liquidity and Financing Sources for Core Wireless Business

Adequate  liquidity and capital are critical to Motient's ability to continue as
a going concern and to fund subscriber acquisition programs necessary to achieve
positive cash flow and profitable operations. The Company expects to continue to
make significant capital outlays to fund interest expense, new product rollouts,
capital  expenditures and working capital before it begins to generate  positive
cash flow from operations. The Company expects these outlays to continue for the
foreseeable future.

The Company's  current  operating  assumptions and projections  reflect its best
estimate  of  subscriber  and revenue  growth and  operating  expenses.  Motient
anticipates that capital  expenditures,  operating  losses,  working capital and
debt  service  requirements  through  2001 can be met by (i) cash on hand,  (ii)
borrowings  available  under its bank  financing  and  vendor  financing,  (iii)
proceeds realized through the sale of inventory relating to eLink and BlackBerry
TM, (iv)  reduction of operating  expenditures,  (v)  additional  debt or equity
financing transactions,  and (vi) its investment in XM Radio. Additionally,  the
Company  has  the  potential  to  receive   additional  funds  from  the  Aether
transaction  as  well  as the  Satellite  Ventures  transaction.  The  Company's
financial results could deteriorate,  and its ability to meet its projections is
subject to numerous  uncertainties.  There can be no assurance  that the current
projections  will be achieved.  If  Motient's  cash  requirements  are more than
projected,  it  will  require  additional  financing  in  amounts  which  may be
material.  The type, timing and terms of financing that the Company selects will
be dependent upon the Company's cash needs,  the availability of other financing
sources and the  prevailing  conditions  in the financial  markets.  The Company
cannot  guarantee  that  additional  financing  sources will be available at any
given time or available on favorable terms.

The Company's  consolidated  financial  statements have been prepared on a going
concern basis,  which contemplates the realization of assets and satisfaction of
liabilities in the normal course of business.  The successful  implementation of
the  Company's   business  plan  requires   substantial  funds  to  finance  the
maintenance  and growth of its  operations,  network and subscriber  base and to
expand  into  new  markets.  The  Company  has an  accumulated  deficit  and has
historically  incurred losses from operations which are expected to continue for
additional periods in the future.  There can be no assurance that its operations
will  become  profitable.  These  factors,  along  with the  Company's  negative
operating  cash  flows  have  placed  significant  pressures  on  the  Company's
financial condition and liquidity  position,  and create substantial doubt about
the Company's ability to continue as a going concern. The accompanying financial
statements do not include any  adjustments  relating to the possible  effects on
the recoverability and classification of assets or amounts and classification of
liabilities  that might be necessary should the Company be unable to continue as
a going concern.


                                      S-7



In January and February 2001, the Company sold, in two separate transactions,  2
million  shares of its XM Radio  Class A Common  Stock,  at an average  price of
$16.77  per share,  for total  proceeds  of $33.5  million.  Approximately  $8.5
million  of the  proceeds  were used to repay and  permanently  reduce  the Term
Facility.  In  exchange  for the  Guarantors  agreeing  to  waive  certain  debt
repayment  obligations  for the  second  sale of  shares,  the  Company  and the
Guarantors  have agreed that the first $16.5  million of proceeds  received from
the earlier of (i) the closing of the Satellite  Ventures  transaction  and (ii)
any other stated  reduction  event to occur in the year 2002 will be used to pay
down the bank financing.


On April 2, 2001,  Motient entered into an agreement for financing in the amount
of $25  million  from Rare  Medium  Group,  Inc.  ("Rare") in the form of a note
payable  at 12.5%  annual  interest  with a  maturity  date,  subject to certain
mutually-agreed upon extensions,  of 180 days from funding, which is expected to
occur by April 6, 2001.  Additionally,  the Company has the potential to receive
up to an additional $25 million of funding,  on comparable  terms, the amount of
which  will be  based on the  market  price of XM Radio  stock.  The  notes  are
collateralized by up to 5 million of the Company's XM Radio shares, and Rare has
the option to exchange the notes for a number of XM Radio shares  equivalent  to
the principal of the note plus any accrued  interest  thereon.  Of the first $25
million  received by the  Company,  the Company  used $6.1  million to repay and
permanently   reduce  its  Term   Facility  and  $14.4  million  is  subject  to
availability upon the approval of the Guarantors.

As of March 30, 2001, the Company held  approximately  14.7 million shares of XM
Radio stock;  however,  approximately 13.7 million of such shares are pledged to
and held by Rare or the Company's  banks and  guarantors to secure the Company's
obligations  under its bank  financings  and the notes  with  Rare.  There is no
guarantee  that the banks and  guarantors  would agree to release any portion of
their share of this  security to permit the  Company to  liquidate  its XM Radio
shares,  or that  such  approval  would be on terms  favorable  to the  Company.
Further,  the  Company's  ability  to sell its  shares of XM Radio  stock in the
public markets is generally limited to the quarterly volume  restrictions  under
Rule 144 of the Securities Act.

As noted above,  in June 2000  Motient  formed a new joint  venture  subsidiary,
Satellite Ventures,  in which the Company owns 80% of the membership  interests.
The remaining 20% interest in Satellite Ventures is owned by the Investors.  The
Investors paid $50 million to Satellite Ventures (in the aggregate), in exchange
for their  20%  interest.  Of the $50  million  payment  received  by  Satellite
Ventures,  $6.0  million was  retained  by  Satellite  Ventures to fund  certain
research and  development  activities,  with the  remaining  $44 million paid to
Motient Services,  which owns the Company's satellite and related assets. Of the
$44 million paid to Motient  Services,  $20 million was payment under a Research
and Development,  Marketing and Service Agreement, and $24 million was a deposit
under the asset sale agreement pursuant to which Motient Services would sell its
satellite  and related  assets to  Satellite  Ventures.


                                      S-8



Motient  is  party  to a  bank  financing  consisting  of (i) a  $77.25  million
Revolving Credit Facility issued by Motient Holdings  (formerly AMSC Acquisition
Company,  Inc.) ("Motient  Holdings"),  and guaranteed by the Company,  maturing
March 31, 2003,  and a $31.5  million Term Loan  Facility  issued by the Company
which matures  March 31, 2003 with up to three  one-year  extensions  subject to
lender  approval.   The  bank  financing  is  severally   guaranteed  by  Hughes
Electronics  Corporation,  Singapore  Telecommunications  Ltd. and Baron Capital
Partners, L.P. (collectively, the "Bank Facility Guarantors").

In 1999,  the Company  raised $116 million,  net of  underwriting  discounts and
expenses, through the issuance of 7.0 million shares of common stock in a public
offering. Of the net proceeds, $59 million was used to pay down a portion of the
Term Loan Facility, and is not available for re-borrowing.  In 2000, the Company
paid down and  permanently  reduced the Term Loan Facility by another $1 million
with  proceeds  from  stock and  warrant  exercises,  and the  Revolving  Credit
Facility was permanently reduced by $22.8 million with a portion of the proceeds
of the Satellite Ventures and Aether transactions.  As a result of the permanent
reductions of the Term Facility,  the Company recorded an extraordinary  loss on
extinguishment  of debt of  approximately  $135,000 in 2000 and $12.1 million in
1999,  which  reflects  the  write-off,  on a  pro-rata  basis,  of  unamortized
guarantee  warrants  held  by  the  Bank  Facility  Guarantors  (the  "Guarantee
Warrants") and deferred financing fees associated with the placement of the bank
financing.  The Company will record an extraordinary  loss on  extinguishment of
debt in 2001 associated with the $8.5 million Term Loan Facility repayment noted
above.

As of March 30, 2001, the Company had $31.5 million  outstanding  under the Term
Loan  Facility  at a rate of  6.19%  and  Motient  Holdings  had  $77.3  million
outstanding  under the revolving credit facility at rates ranging from 6% to 8%.
As of March  30,  2001,  no  amounts  were  available  for  borrowing  under the
Revolving Credit Facility.

In connection with the Bank  Financing,  the Bank Facility  Guarantors  extended
separate  guarantees  of the  obligations  of each of Motient  Holdings  and the
Company to the banks,  which on a several basis  aggregated to $200 million.  In
their  agreement with each of Motient  Holdings and the Company (the  "Guarantee
Issuance  Agreement"),  the  Bank  Facility  Guarantors  agreed  to  make  their
guarantees  available  for the Bank  Financing.  In exchange for the  additional
risks  undertaken  by the Bank Facility  Guarantors in connection  with the Bank
Financing,  the  Company  agreed to  compensate  the Bank  Facility  Guarantors,
principally in the form of 1 million  additional  warrants and re-pricing of 5.5
million warrants previously issued in connection with the original Bank Facility
(together, the "Guarantee Warrants"). The Guarantee Warrants were issued with an
exercise price of $12.51 and were valued at  approximately  $17.7  million.  The
amounts initially assigned to the Guarantee  Warrants and subsequent  repricings
are  recorded  as Common  Stock  Purchase  Warrants  and  Unamortized  Guarantee
Warrants in the accompanying consolidated balance sheets. The amount assigned to
Unamortized Guarantee Warrants is amortized to interest expense over the life of
the related debt.  On March 29, 1999,  the Bank  Facility  Guarantors  agreed to
eliminate  certain  covenants  contained  in the  Guarantee  Issuance  Agreement
relating to earnings  before  interest,  depreciation,  amortization,  and taxes
("EBITDA") and service  revenue.  In exchange for this elimination of covenants,
the Company agreed to re-price their Guarantee Warrants, effective April 1,1999,
from  $12.51  to $7.50.  The  value of the  re-pricing  was  approximately  $1.5
million.

                                      S-9



As a result  of the  automatic  application  of  certain  adjustment  provisions
following  the  issuance  of the 7.0  million  shares in the August  1999 public
offering,  the exercise  price of the Guarantee  Warrants was reduced to $7.3571
per  share and the  Guarantee  Warrants  became  exercisable  for an  additional
126,250 shares. The additional  Guarantee Warrants and re-pricing were valued at
$2.4 million. Additionally, in June 2000, the Bank Facility Guarantors agreed to
partially reduce the debt repayment  requirements  associated with the Satellite
Ventures transaction.  In exchange, the Company further reduced the price of the
Guarantee Warrants to $6.25, which was valued at $1.4 million.

Further,  in connection with the Guarantee Issuance  Agreement,  the Company has
agreed  to  reimburse  the  Bank  Facility  Guarantors  in the  event  that  the
Guarantors  are required to make payment  under the Bank  Financing  guarantees,
and, in  connection  with this  reimbursement  commitment  has provided the Bank
Facility Guarantors a junior security interest with respect to the assets of the
Company, principally its stockholdings in XM Radio and Motient Holdings.

In connection with the bank financing, the Company entered into an interest rate
swap agreement, with an implied annual rate of 6.51%. The swap agreement reduces
the impact of interest  rate  increases on the Term Loan  Facility.  The Company
paid a fixed fee of  approximately  $17.9  million  for the swap  agreement.  In
return,  the  counter-party  is obligated to pay a variable  rate equal to LIBOR
plus 50 basis points, paid on a quarterly basis directly to the respective banks
on  behalf of the  Company,  on a  notional  amount  of $100  million  until the
termination date of March 31, 2001. In connection with the pay down of a portion
of the Term Loan Facility  during 1999, the Company  reduced the notional amount
of its swap agreement from $100 million to $41 million and realized net proceeds
of  approximately  $6 million due to early  termination of a portion of the swap
agreement.  The Company  has  reflected  as an asset,  the fee paid for the swap
agreement  and is  included  in other  assets in the  accompanying  consolidated
balance  sheets.  The interest rate swap fee is being amortized over the life of
the swap as a component of interest expense.  The Company is exposed to a credit
loss in the  event of non-  performance  by the  counter  party  under  the swap
agreement.  The  Company  does  not  believe  there  is a  significant  risk  of
non-performance  as the counter party to the swap agreement is a major financial
institution.

On March 31, 1998,  Motient  Holdings issued $335 million of units consisting of
12.25% Senior Notes due 2008 (the "Senior  Notes"),  and one warrant to purchase
3.75749  shares of Common  Stock.  As a result of the August 1999  common  stock
offering and the automatic  application of certain  adjustment  provisions,  the
exercise price of the warrants  associated  with the Senior Notes was reduced to
$12.28 per share,  the number of shares per warrant was increased to 3.83 shares
for each $1,000  principle  amount of Senior Notes,  and the aggregate number of
shares  issuable upon  exercise of such  warrants was  increased by 24,294.  The
additional  Senior Note  warrants  and  re-pricing  were valued at $440,000  and
recorded as additional debt discount.  The Senior Notes are fully  guaranteed by
the Company.


                                      S-10


Additionally, Motorola has entered into an agreement with Motient Communications
to provide up to $15 million of vendor  financing (the "Financing  Commitment"),
to finance up to 75% of the purchase price of additional  network base stations.
Loans under this  facility  bear interest at a rate equal to LIBOR plus 7.0% and
will be guaranteed by the Company and each subsidiary of Motient  Holdings.  The
terms of the facility  require that amounts borrowed be secured by the equipment
purchased therewith.  Advances made during a quarter constitute a loan, which is
then  amortized on a quarterly  basis over three years.  As of December 31, 2000
and 1999, $8.5 million and $4.5 million respectively, was outstanding under this
facility  at  interest  rates  ranging  from  13.0% to 13.8% and 12.1% to 13.1%,
respectively.

In January 1999 the Company issued to Baron Asset Fund ("Baron"),  a stockholder
and guarantor of its bank facility, a $21.5 million note convertible into shares
of common stock of XM Radio (the  "Convertible Note Payable to Related Party" or
"Baron  XM  Radio   Convertible   Note").   The  Company   subsequently   loaned
approximately  $21.4  million to XM Radio in exchange  for XM Radio Common Stock
and a note convertible into XM Radio shares (the "XM Radio Note Receivable"). On
October 8, 1999 XM Radio  completed its initial public  offering of 10.2 million
shares of Class A common stock,  which  triggered the conversion of the XM Radio
Note receivable into approximately 1.5 million shares of XM Radio Class B common
stock .

The Baron XM Radio  Convertible  note was indexed to XM Radio stock and thus the
$50.1 million  recorded in the  consolidated  balance sheet at December 31, 1999
reflected  management's  best  estimate  of the fair value of the Baron XM Radio
Convertible  Note.  Changes in the fair value of the Baron XM Radio  Convertible
Note were reflected in the accompanying statement of operations as an unrealized
gain or loss on note payable to related  party.  Due to the increase in value of
XM Radio stock, the Company recorded an unrealized loss of $27.4 million for the
year ended December 31, 1999 on the Baron XM Radio  Convertible  Note.  Prior to
the XM Radio acquisition, the Company also recorded the XM Radio Note Receivable
at management's  best estimate of its fair value,  and as a result,  recorded an
unrealized  loss on the XM Radio Note Receivable $9.9 million for the year ended
December 31, 1999.

On January 13, 2000, Baron notified the Company of its intention to exchange the
Baron XM Radio  Convertible Note for 1,314,914 shares of XM Radio Class B Stock.
The exchange of the convertible note resulted in a gain in 2000 of approximately
$36.8 million  computed as the  difference in the carrying value of the Baron XM
Radio  Convertible Note and the Company's cost basis in XM Radio stock exchanged
upon conversion of this note.

XM  Radio

XM Radio is operated, managed, and funded separately from the Company. While the
Company  does not have any  obligation  or  commitments  to  provide  additional
funding to XM Radio, and does not expect to provide such funding,  it may choose
to provide additional  financing in the future. XM Radio is currently  exploring
several  financing  arrangements,  which  may  include  selling  debt or  equity
securities  or  obtaining  loans  from  commercial   banks  or  other  financial
institutions (See Note D - Subsequent Events). The failure of XM Radio to obtain
required  financing  could  have a material  adverse  effect on the value of the
Company's investment in XM Radio.


                                      S-11


On July  7,  1999  XM  Radio  issued  $250  million  of  Series  A  subordinated
convertible  notes to several new strategic and  financial  investors  including
General Motors, Clear Channel Investments,  DIRECTV,  Telcom Ventures,  Columbia
Capital and Madison Dearborn Partners.  $75 million of the proceeds were used to
pay an  outstanding  note payable and the  remaining  proceeds were used to fund
working capital needs. The Series A subordinated  notes and all accrued interest
thereon are convertible  into Series A convertible  preferred stock (in the case
of the notes held by General  Motors),  or Class A common stock (in the case the
notes held by the other  investors) at a conversion  price of $9.52 per share at
the  election  of the note  holders or upon the  occurrence  of certain  events,
including an initial public offering of a prescribed size of XM Radio shares. On
October 8, 1999, XM Radio  completed an initial public  offering of 10.2 million
shares of Class A common  stock.  Concurrent  with this  offering,  the Series A
subordinated convertible notes were converted into 10.8 million shares of Series
A convertible preferred stock and 16.2 million shares of Class A common stock.

In the first quarter of 2000, XM Radio raised an  additional  $228.6  million in
net proceeds  through a follow-on  offering of 4.4 million shares of its Class A
common stock and 2.0 million shares of Series B convertible redeemable preferred
stock.

In March 2000, XM Radio  completed a high yield debt offering of 325,000  units,
each unit consisting of $1,000  principal amount of 14% Senior Secured Notes due
2010 and one warrant to purchase  8.024815  shares of Class A common stock of XM
Radio at an exercise  price of $49.50 per share.  XM Radio realized net proceeds
of  $191.5  million,   excluding  $123.0  million  used  to  acquire  restricted
investments  which will be used to pay interest payments due under the notes for
the first three years.

In August  2000,  XM Radio  completed a private  offering of 235,000  shares for
$1,000 per share of its 8.25% Series C convertible  redeemable  preferred  stock
and raised  additional net proceeds of  approximately  $226.8 million.  XM Radio
recorded a $123.0 million  beneficial  conversion  charge that reduced  earnings
available to common  stockholders.  The issuance of the Series C preferred stock
caused the exercise  price of the warrants  sold in March 2000 to be adjusted to
$47.94 and the number of warrant shares to be increased to 8.285948 per warrant.

In  connection  with the  above  XM Radio  transactions,  the  Company's  voting
interest in XM Radio was reduced to 33.1 % (21.3% on a fully diluted basis), and
in accordance with Staff  Accounting  Bulletin 51 (SAB 51), the Company recorded
an increase to its  investment in XM Radio of $129.5  million in 2000 and $80. 7
million  in  1999.  SAB 51  addresses  the  accounting  for  sales of stock by a
subsidiary. Because XM Radio is a development stage company, SAB 51 requires the
difference in the carrying  amount of the  Company's  investment in XM Radio and
the net book value of XM Radio  after the stock  issuance  be  reflected  in the
financial statements of the Company as a capital transaction in the accompanying
consolidated statements of stockholders' equity (deficit).


                                      S-12


In January 1999 the Company issued to Baron Asset Fund ("Baron"),  a stockholder
and guarantor of the Company's bank facility,  a $21.5 million note  convertible
into  shares of common  stock of XM Radio  (the  "Convertible  Note  Payable  to
Related Party" or "Baron XM Radio Convertible  Note"). The Company  subsequently
loaned  approximately  $21.4 million to XM Radio in exchange for XM Radio Common
Stock  and a  note  convertible  into  XM  Radio  shares  (the  "XM  Radio  Note
Receivable"). On October 8, 1999, XM Radio completed its initial public offering
of 10.2 million shares of Class A common stock,  which  triggered the conversion
of the XM Radio Note  Receivable  into  approximately  1.5 million  shares of XM
Radio  Class B common  stock.  The  Company  opted to satisfy the Baron XM Radio
Convertible  Note by  tendering  the  shares  into  which  it  would  have  been
convertible in lieu of any cash payments.  In January 2000, Baron exchanged this
note into shares of XM Radio.

Note C - Guarantees

The  Company has  guaranteed  various  obligations  of Motient  Holdings.  These
guaranteed  obligations  include  amounts  borrowed  under the Revolving  Credit
Facility,  Vendor Financing Commitment,  and obligations of Motient Holdings and
its  subsidiaries  under  certain  vendor  financing  agreements,  office  lease
agreements and various capital equipment leases.

All wholly owned subsidiaries of the Company are subject to financing agreements
that limit the amount of cash  dividends  and loans that can be  advanced to the
Company.  At  December  31,  2000,  all of the  subsidiaries'  net  assets  were
restricted under these agreements. These restrictions will have an impact on the
Company's ability to pay dividends.

Note D - Subsequent Events

Core Wireless Business

As noted above,  in January and February 2001, the Company sold, in two separate
transactions,  2 million  shares  of its XM Radio  Class A Common  Stock,  at an
average  price of  $16.77  per  share,  for  total  proceeds  of $33.5  million.
Approximately  $8.5 million of the proceeds  were used to repay and  permanently
reduce the Term  Facility.  In  exchange  for the  guarantors  agreeing to waive
certain debt repayment  obligations  for the second sale of shares,  the Company
and the Guarantors have agreed that the first $16.5 million of proceeds received
from the earlier of (i) the closing of the Satellite  Ventures  transaction  and
(ii) any other stated  reduction event to occur in the year 2002 will be used to
pay down the bank financing.


                                      S-13



In January  2001,  the Company  entered  into an  agreement,  subject to certain
conditions,  to amend in several respects the terms of its June 2000 transaction
involving  Satellite Ventures.  First, the Investors agreed,  subject to certain
conditions including approvals by the Federal Communications Commission ("FCC"),
to invest an additional  $50 million to become (in the  aggregate) the owners of
40% of the outstanding interests of Satellite Ventures.  The Investors will also
have an  option,  exercisable  through  June 29,  2002,  for an  additional  $40
million,  to increase their ownership in Satellite Ventures to 50.66% (with each
individual  Investor's stake being less than 20%).  Second,  upon closing of the
transaction, TMI will contribute its satellite communications business assets to
Satellite  Ventures,  along with Motient's  satellite  business assets. TMI will
become the owner of  approximately  27% of the  outstanding  equity of Satellite
Ventures  and will also  receive a cash  payment of $7.5  million,  as well as a
$11.5 million 5-year note.

Upon closing of these  transactions,  Motient  Services  will sell its remaining
satellite  assets to Satellite  Ventures,  in exchange for a cash payment of $45
million and a 5-year,  $15 million  note.  Upon  Closing,  the Company  will own
approximately  33% of the  outstanding  interests  and  be  the  largest  single
shareholder of Satellite Ventures. A portion of Satellite Ventures' cash payment
to TMI at  closing  will be funded by the  Company's  loan of $2.5  million,  in
exchange for a note back in the same amount.

Under the original  transaction,  at any time until June 29, 2002, the Investors
had certain  rights to elect to convert  their  interests in Satellite  Ventures
into shares of Motient's common stock at a conversion price which will be set at
the time of  exercise,  between $12 and $20 per share,  as specified in the June
Investment  Agreement.  As part of the January agreement,  this right remains in
place, but is limited to an aggregate of $55 million.

Under the terms of the bank facility  waivers  received by Motient in connection
with the January 2001  agreement,  half of all amounts to be received by Motient
Services from Satellite  Ventures in connection  with Motient  Services' sale of
its satellite business assets to Satellite  Ventures,  including the $45 million
in cash and $15  million  note  receivable,  will be used to  repay  outstanding
amounts,  and permanently reduce commitments,  under Motient Holdings' Revolving
Credit Facility.

The  consummation  of the  transactions  is subject to receipt of all  necessary
regulatory  governmental  approvals  and  consents,   including,   for  example,
approvals  under  the  Hart-Scott-Rodino  Antitrust  Improvements  Act,  and FCC
approvals  with respect to both the transfer of Motient  Services'  FCC licenses
and   Satellite    Ventures'    plans   for   a   new   generation    integrated
satellite-terrestrial  system, approvals by Canadian regulatory authorities with
respect to the transfer of TMI's communications licenses to the new venture, and
other  customary  conditions  relating  to due  diligence  review,  third  party
consents,  and similar  matters.  Beginning in January 2002, if certain  closing
conditions have not occurred, the Company and TMI have certain rights to require
the  closing  to proceed  at such  time,  and if less than all of the  Investors
participate at such time, the Company and TMI may, under certain  circumstances,
purchase the  interests in Satellite  Ventures  that would have  otherwise  been
acquired by any such non-participating Investors.


                                      S-14



XM Radio

In March 2001, XM Radio completed a follow-on  offering of 7.5 million shares of
Class A common  stock,  which  yielded  net  proceeds  of $72.0  million,  and a
concurrent   offering  of  7.75%  convertible   subordinated   notes  due  2006,
convertible  into shares of Class A common stock at a conversion price of $12.23
per share, which yielded net proceeds of $120.7 million.
















                                      S-15




                                                     SCHEDULE II
                                          VALUATION AND QUALIFYING ACCOUNTS
                                    YEARS ENDED DECEMBER 31, 1998, 1999 AND 2000



                                                            Charged
                                               Balance at   to Costs                  Balance at
                                               Beginning      and                       End of
Description                                     of Year     Expenses    Deductions        Year
- -----------                                     -------     --------    ----------     ---------
                                                                             
1998
       Allowance for doubtful accounts          $1,930       $ 694       $(1,689)         $935
1999
       Allowance for doubtful accounts             935       1,309        (1,019)        1,225
2000
       Allowance for doubtful accounts           1,225       1,668        (1,576)        1,317







                                      S-16