<Page>

Filed pursuant to Rule 424(b)(3)
Registration Statement No. 333-62762

PROSPECTUS SUPPLEMENT DATED AUGUST 28, 2001
(TO PROSPECTUS DATED JULY 27, 2001)

800,306 SHARES OF COMMON STOCK

INTRADO INC.

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

You should read this Prospectus Supplement and the accompanying prospectus
carefully before you invest. Both documents contain information you should
consider when making your investment decision.

SEE "RISK FACTORS" BEGINNING ON PAGE 2 OF THE PROSPECTUS TO READ ABOUT
FACTORS YOU SHOULD CONSIDER BEFORE BUYING SHARES OF OUR COMMON STOCK.

SELLING STOCKHOLDERS

The following table updates information contained in the prospectus, dated
July 27, 2001, regarding the security holders that may use this prospectus to
sell their common stock.

<Table>
<Caption>
Number of Shares Which Shares Owned
Shares Owned May be Sold After Offering (1)
Before the Pursuant to -------------------------
Selling Stockholders Offering this Prospectus Number Percentage
- ----------------------------------- ------------ --------------- ---------- ----------

RS Investment Management Co. LLC 632,111 632,111 -0- -0-
Alan Budd Zuckerman 117,664 117,664 -0- -0-
Thomas W. Schneider 1,850 1,850 -0- -0-
Floyd Murray LLC 720 720 -0- -0-
Keith A. Koch 537 537 -0- -0-
Thomas J. O'Rourke 404 404 -0- -0-
Siegfried P. Duray-Bito 300 300 -0- -0-
Sherry L. Andersen 300 300 -0- -0-
Jay A. Murray 270 270 -0- -0-
Richard J. Rouse 210 210 -0- -0-
J. Patrick Driver 150 150 -0- -0-
Bathgate McColley Capital Group LLC 7,500 7,500 -0- -0-
Cynthia Cox 1,700 1,700 -0- -0-
Leopard Communications 36,590 36,590 -0- -0-

</Table>

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

(1) Assumes all shares offered are sold.

Except as otherwise noted, neither the selling stockholders, nor their
officers, directors and major shareholders, has held any material relationship
with Intrado or any of our affiliates within the past three years other than as
an owner of our securities.
<Page>

GENERAL

You should rely only on the information provided or incorporated by
reference in this prospectus supplement or in the accompanying prospectus. We
have not authorized anyone else to provide you with different information.
You should not assume that the information in this prospectus supplement or
in the accompanying prospectus is accurate as of any date other than the date
on the front of these documents.

NEITHER THE SECURITIES AND EXCHANGE COMMISSION NOR ANY OTHER REGULATORY
BODY HAS APPROVED OR DISAPPROVED OF THESE SECURITIES OR PASSED UPON THE
ACCURACY OR ADEQUACY OF THIS PROSPECTUS SUPPLEMENT OR THE ACCOMPANYING
PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE.

The date of this Prospectus Supplement is August 28, 2001.

<Page>

Filed pursuant to Rule 424(b)(3)
Registration Statement No. 333-62762

PROSPECTUS

DATED JULY 27, 2001.

INTRADO INC.

UP TO 800,306 SHARES OF COMMON STOCK

The selling stockholders listed on page 8 are offering up to 800,306
shares of common stock. Intrado will not receive any proceeds from the sale of
common stock by the selling stockholders.

Our common stock is traded on the Nasdaq National Market under the
symbol "TRDO." On July 26, 2001, the closing price for our common stock was
$20.15 per share.

The selling stockholders may sell the common stock on the Nasdaq
National Market at prevailing market prices, in negotiated transactions, or
otherwise. See "Plan of Distribution."

SEE "RISK FACTORS" BEGINNING ON PAGE 2 TO READ ABOUT FACTORS YOU SHOULD
CONSIDER BEFORE BUYING SHARES OF THE COMMON STOCK.

NEITHER THE SECURITIES AND EXCHANGE COMMISSION NOR ANY OTHER REGULATORY
BODY HAS APPROVED OR DISAPPROVED OF THESE SECURITIES OR PASSED UPON THE ACCURACY
OR ADEQUACY OF THIS PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS A CRIMINAL
OFFENSE.

The date of this prospectus is July 27, 2001.
<Page>

ABOUT INTRADO INC.

Intrado Inc. is the leading provider of 9-1-1 operations support system
services to telecommunications carriers. Our customers include incumbent local
exchange carriers, competitive local exchange carriers, wireless carriers, and
state and local governments in North America. We have redefined the market for
9-1-1 operations support systems by creating the first and largest 9-1-1 service
bureau, with over 101 million subscriber data records under management
throughout North America. In addition, we license our 9-1-1 operations support
system software to carriers that wish to manage their 9-1-1 data systems
in-house.

We manage the data that enables a 9-1-1 call to be routed to the
appropriate public safety answering point or "PSAP" with accurate and timely
information about the caller's call-back number and location. Each day, we
receive subscriber and coverage updates from our telecommunications carrier
customers, as well as public safety jurisdiction boundary changes from PSAPs.
Records identified as potentially having problems are separated automatically
and reviewed and analyzed by our data integrity team. The clean data is then
inserted into the 9-1-1 system, so that the call may be routed to the
appropriate PSAP with the correct location and call-back number. This complex
and detailed process allows our customers to comply with regulatory mandates and
to provide additional value-added services.

Our solution is comprehensive and cost-effective, as well as highly
reliable and secure. Our customers may outsource virtually all of their 9-1-1
data management operations, including system activation, routine data
administration, event transaction processing and performance management. Our
customers include, among others, Ameritech, AT&T Wireless Services, BellSouth,
Worldcom, Sprint PCS, the General Services Commission of the State of Texas and
Qwest.

We incorporated in July 1979 in the State of Colorado under the name
Systems Concepts of Colorado, Inc. and reincorporated in September 1993 in the
State of Delaware under the name SCC Communications Corp. In May 2001, we
changed the name of our company to Intrado Inc.

RISK FACTORS

You should carefully consider the risks described below before making an
investment decision.

OUR OPERATING RESULTS MAY FLUCTUATE, CAUSING OUR STOCK PRICE TO DECLINE.

Our quarterly revenue and operating results are difficult to predict and
may fluctuate significantly from quarter to quarter. We experienced a profit in
1998, but had a net loss of approximately $1.3 million in 1999 and a net loss of
$9.5 million in 2000. Therefore, you should not rely on period-to-period
comparisons of revenue or operating results as an indication of our future
performance. If our quarterly revenue or operating results fall below the
expectations of the investors or securities analysts, the price of our common
stock could fall substantially.

Our operating results may continue to fluctuate as a result of many
factors, including:

2
<Page>

o sales channel constraints;
o constraints on our sales and marketing efforts due to conflicts of
interest and the fact that many of our customers compete with each
other;
o the success or failure of our Alliance Program, which we initiated in
1999 to partner with companies that provide support systems to
competitive local exchange carriers that are complementary with our
9-1-1 support systems, such as billing and customer care services;
o technical difficulties and network downtime, including that caused by
unauthorized access to our systems; and
o new developments in telecommunications legislation and regulations.

WE DEPEND ON LARGE CONTRACTS FROM A LIMITED NUMBER OF SIGNIFICANT CUSTOMERS AND
THE LOSS OF ANY OF THOSE CONTRACTS WOULD ADVERSELY AFFECT OUR OPERATING RESULTS.

We historically have depended on, and expect to continue to depend on,
large contracts from a limited number of significant customers. We provide our
services to a range of customers, including incumbent local exchange carriers,
competitive local exchange carriers, wireless carriers and state and local
government agencies. We also license our software and provide 9-1-1 data
clearinghouse services directly and indirectly to over 750 independent telephone
companies. During the year ended December 31, 2000, we recognized approximately
66% of total revenue from continuing operations from Ameritech, BellSouth Inc.
and Qwest, each of which accounted for greater than 10% of our revenue. During
the year ended December 31, 1999, we recognized approximately 81% of total
revenue from Ameritech, BellSouth Inc. and Qwest, each of which accounted for
greater than 10% of our revenue. No other customers accounted for more than 10%
of our total revenue during those periods. We believe that these customers may
continue to represent a substantial portion of our total revenue in the future.
Certain contract provisions allow these customers to cancel their contracts with
us in the event of changes in regulatory, legal, labor or business conditions.
Our contracts with these customers expire in 2005. The loss of any of these
customers would have a material adverse effect on our business, financial
condition and results of operations.

IN ACQUIRING LUCENT PUBLIC SAFETY SYSTEMS, WE MAY EXPERIENCE FINANCIAL OR
OPERATIONAL PROBLEMS AND YOUR OWNERSHIP INTEREST MAY BE SIGNIFICANTLY DILUTED.

In May 2001, we acquired specified assets and assumed specified liabilities
associated with the business of Lucent Public Safety Systems, an internal
venture of Lucent Technologies Inc. The acquisition may not produce the
revenues, earnings or business synergies that we anticipate. To integrate the
operations and personnel of the acquired business, we may encounter significant
difficulties and incur substantial expenses. In particular, we may lose the
services of key employees of the acquired business and the separation of the
business from Lucent Technologies may impair relationships between the acquired
business and its employees and customers. Because our management has limited
experience in acquisitions and in integrating acquired companies or technologies
into our operations, we may not be able to manage the acquisition successfully.
Moreover, the time and effort we spend integrating the acquired business into
our business may divert our time and attention from existing operations.

Furthermore, Lucent Public Safety Systems was not accounted for as a
separate reporting entity within Lucent Technologies. As a result, we may
encounter unexpected financial or operational difficulties that were not
apparent from historical financial reports. This could prevent us from realizing
the anticipated benefits of the acquisition and cause the market value of our
common stock to decline.

OUR BUSINESS IS SUBJECT TO GOVERNMENT REGULATION AND OTHER LEGAL UNCERTAINTIES,
WHICH COULD ADVERSELY AFFECT OUR OPERATIONS.

The market for our services and products has been influenced by various
laws and regulations, including:

o the adoption of regulations under the Telecommunications Act of 1996;
o the duties imposed on Intrado as a result of its status as a
competitive local exchange carrier;
o the duties imposed on incumbent local exchange carriers by the
Telecommunications Act of 1996 to open the local telephone markets to
competition;

3
<Page>

o the responsibilities of local exchange carriers to provide subscriber
records to emergency service providers under the Wireless
Communications and Public Safety Act of 1999;
o the impact of various federal and state regulations on wireless
carriers that provide enhanced 9-1-1 service;
o various state and local requirements, including but not limited to
jurisdictions in which we are a regulated utility and may be a party
to various regulatory actions; and
o the requirements imposed on carriers by the Federal Communications
Commission in Docket 94-102.

Any changes to these legal requirements, including those caused by the adoption
of new regulations by federal or state regulatory authorities or by legal
challenges, could have a material adverse effect upon the market for our
services and products. Although these laws and regulations were designed or
modified in some respects to expand competition in the telecommunications
industry, the realization of these objectives is subject to many uncertainties,
including renewed Congressional interest, judicial and administrative
proceedings designed to define rights, obligations, and activities of local
exchange carriers, and other regulatory, economic and political factors.

Litigation, regulatory changes, and legislative activity may delay full
implementation of the Telecommunications Act or similar federal and state
legislation and regulations, which could adversely affect demand for our
services and products. Any invalidation, repeal, modification or delay in the
requirements imposed by the Federal Communications Commission or by any state
utility commissions could have a material adverse effect on our business,
financial condition and results of operations. Moreover, customers may require
us, or we otherwise may deem it necessary or advisable, to modify our services
and products to address actual or anticipated changes in the regulatory
environment. Any other delays in implementation of these laws and regulations,
or other regulatory changes or similar developments, could have a material
adverse effect on our business, financial condition and results of operations.

9-1-1 services generally are funded by a locally imposed monthly subscriber
fee. A portion of this fee is paid to the local carrier providing the 9-1-1
services. We generally receive a monthly fee per subscriber from our wireline
customers for management of 9-1-1 data records, and subscriber-based or cellular
tower-based fees from our wireless customers, allowing the carrier to match our
fixed revenue stream for 9-1-1 services with a fixed cost for record and cell
tower management. Changes by local governments in the funding mechanism for
9-1-1 services or the parties responsible for the provision of such services
could have a material adverse effect on our business, financial condition and
results of operations.

OUR MARKET IS CHARACTERIZED BY RAPID TECHNOLOGICAL CHANGE, AND WE COULD LOSE OUR
COMPETITIVE POSITION AND FAIL TO GROW OUR BUSINESS IF WE DO NOT DEVELOP AND
OFFER NEW PRODUCTS AND SERVICES.

The market for our services is characterized by rapid technological change,
frequent new product or service introductions, evolving industry standards and
changing customer needs. If we are unable to develop and introduce new services
and products to these new markets in a timely manner, or if a new release of a
product or service to such new markets does not achieve market acceptance, our
business, financial condition and results of operations could be materially
adversely affected.

SUBSTANTIALLY ALL OF OUR REVENUE IS DERIVED FROM OUR 9-1-1 DATA MANAGEMENT
SOLUTION AND OUR OPERATING RESULTS MAY DEPEND UPON OUR ABILITY TO CONTINUE TO
SELL THIS SOLUTION.

We currently derive substantially all of our revenue from the provisioning
of our 9-1-1 data management solution to incumbent local exchange carriers,
competitive local exchange carriers, wireless carriers and state and local
government agencies. Accordingly, we are susceptible to adverse trends affecting
this market segment, including government regulation, technological obsolescence
and the entry of new competition. We expect that this market may continue to
account for substantially all of our revenue in the near future. As a result,
our future success depends on our ability to continue to sell our 9-1-1
solution, maintain and increase our market share by providing other value-added
services to the market, and successfully adapt our technology and services to
other related markets. Markets for our existing services and products may not
continue to expand and we may not be successful in our efforts to penetrate new
markets.

4
<Page>

WE DEPEND ON STRATEGIC PARTNERS FOR DELIVERY OF OUR PRODUCTS AND SERVICES, AND
THE DISCONTINUATION OR DISRUPTION OF THESE RELATIONSHIPS COULD HAVE A MATERIAL
ADVERSE IMPACT ON OUR BUSINESS.

We have business relationships with several other businesses on whom we
rely substantially for the successful development, implementation and deployment
of many of our products and services. Should any of the more strategic of those
relationships be discontinued or disrupted for a substantial period of time
without a suitably efficient alternative relationship, we might not be able to
meet our contractual obligations or otherwise meet our goals of delivering
products and services on a timely basis. Any of these consequences could, in
turn, have a material adverse impact on our revenue and expenses.

OUR OPERATING RESULTS COULD BE ADVERSELY AFFECTED IF WE UNDERESTIMATE COSTS ON
OUR FIXED PRICE CONTRACTS.

During the year ended December 31, 2000, approximately 89% of our revenue
was generated on a fixed price per subscriber basis. We generally enter into
contracts with two- to ten-year terms and we generally receive a fixed monthly
fee based upon the number of subscribers and upon the services selected by the
customer. Therefore, our failure to estimate accurately the resources required
for a fixed price per subscriber contract could have a material adverse effect
on our business, financial condition and results of operations.

WE COULD INCUR SUBSTANTIAL COSTS FROM PRODUCT LIABILITY CLAIMS RELATING TO OUR
SOFTWARE.

Because our services and licensed software products are utilized by our
customers to provide critical 9-1-1 services, we are subject to product
liability and related claims. Our agreements with customers typically require us
to indemnify customers for our own acts of negligence and non-performance.
Product liability and other forms of insurance is expensive and may not be
available in the future. We cannot be sure that we will be able to maintain or
obtain insurance coverage at acceptable costs or in sufficient amounts or that
our insurer may not disclaim coverage as to a future claim. A product liability
or similar claim may adversely affect our business, operating results or
financial condition.

OUR OPERATING RESULTS COULD BE ADVERSELY AFFECTED BY ANY INTERRUPTION OF OUR
SERVICES OR SYSTEM FAILURE.

Our operations depend on our ability to maintain our computer and
telecommunications equipment and systems in effective working order, and to
protect our systems against damage from fire, natural disaster, power loss,
telecommunications failure, sabotage, unauthorized access to our system or
similar events. Although all of our mission-critical systems and equipment are
designed with built-in redundancy and security, any unanticipated interruption
or delay in our operations could have a material adverse effect on our business,
financial condition and results of operations. Furthermore, any addition or
expansion of our facilities to increase capacity could increase our exposure to
damage from fire, natural disaster, power loss, telecommunications failure or
similar events. Our property and business interruption insurance may not be
adequate to compensate us for any losses that may occur in the event of a system
failure. Furthermore, insurance may not be available to us at all or, if
available, may not be commercially reasonable.

THE MARKET FOR 9-1-1 DATA MANAGEMENT SOLUTIONS IS HIGHLY COMPETITIVE, AND WE
COULD LOSE OUR MARKET POSITION IF WE FAIL TO COMPETE EFFECTIVELY.

The market for 9-1-1 data management solutions is intensely
competitive and we expect competition to increase in the future. We believe
that the principal competitive factors affecting the market for 9-1-1 data
management services include flexibility, reliability, manageability,
technical features, performance, ease of use, price, scope of product
offerings, and customer service and support. We may not be able to maintain
our competitive position against current and potential competitors,
especially those with significantly greater financial, marketing, support
service, technical and other competitive resources.

5
<Page>

CLAIMS BY OTHER COMPANIES THAT OUR PRODUCTS INFRINGE THEIR PROPRIETARY RIGHTS
COULD ADVERSELY AFFECT OUR FINANCIAL CONDITION.

As the number of entrants to our markets increases and the functionality of
our services and products increases and overlaps with the products and services
of other companies, we may become subject to claims of infringement or
misappropriation of the intellectual property rights of others. In certain
customer agreements, we agree to indemnify our customers for any expenses or
liabilities resulting from claimed infringements of patents, trademarks or
copyrights of third parties. In some instances, the amount of the indemnities
may be greater than the revenue we received from the customer. Any claims or
litigation, with or without merit, could be time consuming, result in costly
litigation or require us to enter into royalty or licensing arrangements. Any
royalty or licensing arrangements, if required, may not be available on terms
acceptable to us, if at all, and could have a material adverse effect on our
business, financial condition and results of operations.

THE MARKET PRICE OF OUR COMMON STOCK MAY EXPERIENCE PRICE FLUCTUATIONS FOR
REASONS OVER WHICH WE HAVE NO CONTROL.

The stock market has from time to time experienced, and is likely to
continue to experience, extreme price and volume fluctuations. Recently, prices
of securities of high technology companies have been especially volatile and
have often fluctuated for reasons that are unrelated to the operating
performance of the affected companies. The market price of shares of our common
stock has fluctuated greatly since our initial public offering and could
continue to fluctuate due to a variety of factors, some of which are not within
our control. In the past, companies that have experienced volatility in the
market price of their stock have been the objects of securities class action
litigation. If we were the object of securities class action litigation, it
could result in substantial costs and a diversion of our management's attention
and resources.

OUR CORPORATE DOCUMENTS AND DELAWARE LAW MAKE A TAKEOVER OF OUR COMPANY MORE
DIFFICULT, WHICH MAY ADVERSELY AFFECT THE MARKET PRICE OF OUR COMMON STOCK.

Our charter and bylaws and Section 203 of the Delaware General Corporation
Law contain provisions that might enable our management to resist a corporate
takeover. Among other things, the board of directors has the ability to issue
"blank check" preferred stock without stockholder approval. These provisions may
discourage, delay or prevent a change in control or a change in our management.
These provisions also could discourage proxy contests and make it more difficult
for you to elect directors and take other corporate actions. In addition, these
provisions could adversely affect the price that investors are willing to pay
for shares of common stock and prevent you from realizing the premium return
that stockholders may receive in conjunction with a corporate takeover.

OUR OFFICERS AND DIRECTORS HAVE SIGNIFICANT VOTING POWER AND MAY SUBSTANTIALLY
INFLUENCE THE OUTCOME OF ANY STOCKHOLDER VOTE.

As of April 24, 2001, members of our board of directors and our executive
officers, together with members of their families and entities that are
affiliated with such persons, beneficially own approximately 18.5% of the
outstanding shares of our common stock. Accordingly, these stockholders are able
to influence the election of our board of directors and the outcome of corporate
actions requiring stockholder approval, such as mergers and acquisitions. These
stockholders may be able to delay or prevent a change in control and may
adversely affect the voting and other rights of other holders of common stock.

CAUTIONARY NOTE ABOUT FORWARD-LOOKING STATEMENTS

This prospectus and the information incorporated by reference may include
"forward-looking statements" within the meaning of Section 27A of the Securities
Act and Section 21E of the Exchange Act. We intend the forward-looking
statements to be covered by the safe harbor provisions for forward-looking
statements in these sections. All statements regarding our expected financial
position and operating results, our business strategy, our financing plans and
the outcome of any contingencies are forward-looking statements. These
statements can sometimes be identified by our use of forward-looking words such
as "may," "believe," "plan," "will," "anticipate," "estimate," "expect,"

6
<Page>

"intend" and other phrases of similar meaning. Known and unknown risks,
uncertainties and other factors could cause the actual results to differ
materially from those contemplated by the statements. The forward-looking
information is based on various factors and was derived using numerous
assumptions.

Although we believe that our expectations that are expressed in these
forward-looking statements are reasonable, we cannot promise that our
expectations will turn out to be correct. Our actual results could be materially
different from our expectations, including the following:

o our planned investments in research, development and marketing to
expand our service offerings;
o the size, timing and duration of significant customer contracts;
o our ability to integrate new customers and assets acquired in
acquisitions, such as our May 2001 acquisition of Lucent Public Safety
Systems;
o the number of subscriber records under our management;
o the unpredictable rate of adoption of wireless services by public
service answering points;
o the introduction and market acceptance of our and our competitors' new
products and services;
o price competition from entities with substantially greater resources
than us;
o the amount of up-front expenditures required to meet our customers'
demands and to expand our infrastructure, combined with the length of
our sales cycle;
o sales channel constraints;
o constraints on our sales and marketing efforts due to conflicts of
interest and the fact that many of our customers compete with each
other;
o the success or failure of our Alliance Program, which we initiated in
1999 to partner with companies that provide support systems to
competitive local exchange carriers that are complementary with our
9-1-1 support systems, such as billing and customer care services;
o technical difficulties and network downtime, including that caused by
unauthorized access to our systems; and
o new developments in telecommunications legislation and regulations.

This list is intended to identify some of the principal factors that could cause
actual results to differ materially from those described in the forward-looking
statements included elsewhere in this report. These factors are not intended to
represent a complete list of all risks and uncertainties inherent in our
business, and should be read in conjunction with the more detailed cautionary
statements included in this prospectus under the caption "Risk Factors."

DESCRIPTION OF COMMON STOCK

The description of our common stock, $0.001 par value, is included in our
Registration Statement on Form 8-A, which was filed with the Securities and
Exchange Commission on April 30,1998. We have incorporated our Registration
Statement on Form 8-A by reference. As of July 26, 2001, we have 14,492,246
shares of common stock issued and outstanding.

SELLING STOCKHOLDERS

The following table sets forth information regarding the ownership of our
common stock by the selling stockholders and the maximum number of shares that
may be sold pursuant to this prospectus.

7
<Page>

<Table>
<Caption>
Number of Shares Which Shares Owned
Shares May be Sold After Offering (1)
Owned Pursuant -------------------
Before the to this
Selling Stockholders Offering Prospectus Number Percentage
- ----------------------------- ------------- ------------ ------- ----------

RS Investment Management Co. LLC 632,111 632,111 -0- -0-
Schneider Securities, Inc. 31,605 31,605 -0- -0-
Genesis Select Corporation 100,000 100,000 -0- -0-
Leopard Communications 36,590 36,590 -0- -0-
</Table>

- -----------------------------
(1) Assumes all shares offered are sold.

PLAN OF DISTRIBUTION

The common stock covered by this prospectus may be offered and sold
from time to time by the selling stockholders or by their pledgees, donees,
transferees or other successors in interest, including in one or more of the
following transactions:

o on the Nasdaq National Market;
o in the over-the-counter market;
o in transactions other than on the Nasdaq National Market or in the
over-the-counter market;
o through brokers or dealers, or in direct transactions with purchasers;
o in connection with short sales;
o by pledge to secure debts and other obligations;
o in connection with the writing of options, in hedge transactions, and
in settlement of other transactions in standardized or
over-the-counter options; or
o in a combination of any of the above transactions.

The selling stockholders may sell their shares at prevailing market prices,
at prices related to prevailing market prices, at negotiated prices, or at fixed
prices. There is no assurance that the selling stockholders will sell any or all
of their common stock. Brokers and dealers that are used will either receive
discounts or commissions from the selling stockholders, or will receive
commissions from the purchasers.

The selling stockholders may also elect to sell their shares pursuant to
Rule 144 under the Securities Act of 1933. We have agreed to indemnify the
selling stockholders against certain liabilities, including liabilities arising
under the Securities Act of 1933.

LEGAL OPINION

For the purposes of this offering, Brownstein Hyatt & Farber, P.C. has
given its opinion as to the validity of the shares offered by the selling
stockholders.

8
<Page>

EXPERTS

The financial statements and schedule incorporated by reference in this
prospectus and elsewhere in the registration statement have been audited by
Arthur Andersen LLP, independent public accountants, as indicated in their
report with respect thereto, and are included in reliance upon the authority of
said firm as experts in accounting and auditing in giving said reports.

WHERE YOU CAN FIND MORE INFORMATION

We file annual, quarterly and special reports, proxy statements, and other
information with the SEC. Our SEC filings are available to the public over the
Internet at the SEC's web site at www.sec.gov. You may also read and copy any
document we file at the SEC's public reference rooms in Washington, D.C., New
York, New York and Chicago, Illinois. The public reference room in Washington,
D.C. is located at 450 Fifth Street, N.W. Please call the SEC at 1-800-SEC-0330
for further information about the public reference rooms.

Our common stock is listed on the Nasdaq National Market. Reports, proxy
statements, and other information concerning Intrado can be reviewed at the
offices of Nasdaq Operations, 1735 "K" Street, N.W., Washington, D.C. 20006.

The SEC allows us to "incorporate by reference" the information we file
with it, which means that we can disclose important information to you by
referring you to those documents. The information incorporated by reference is
an important part of this prospectus, and information that we file later with
the SEC will automatically update and supersede this information. We incorporate
by reference the documents listed below and any future filings made with the SEC
under Sections 13(a), 13(c), 14, or 15(d) of the Securities Exchange Act of
1934:

o Annual Report on Form 10-K for the year ended December 31, 2000, as
filed with the SEC on March 29, 2001;
o Current Reports on Form 8-K, as filed with the SEC on May 11, May 14,
June 4, and July 26, 2001;
o Definitive Proxy Statement for the 2001 Annual Meeting of
Stockholders, as filed with the SEC on May 10, 2001;
o Quarterly Report on Form 10-Q for the quarter ended March 31, 2001, as
filed with the SEC on May 15, 2001; and
o the description of our common stock contained in our registration
statement on Form 8-A, as filed with the SEC on August 14, 1996.

We have also filed a registration statement on Form S-3 with the SEC under the
Securities Act of 1933. This prospectus does not contain all of the information
set forth in the registration statement. You should read the registration
statement for further information about our company and our common stock. You
may request a copy of these filings at no cost. Please direct your requests to:

Michael D. Dingman, Jr.
Chief Financial Officer
Intrado Inc.
6285 Lookout Road
Boulder, Colorado 80301
(303) 581-5600

You may also want to refer to our web site at www.intrado.com. However, our web
site is not a part of this prospectus.

You should rely only on the information incorporated by reference or
provided in this prospectus or any prospectus supplement. We have not authorized
anyone else to provide you with different information. Intrado and the selling
stockholders are not making an offer of the common stock in any state where the
offer is not permitted.

9
<Page>

You should not assume that the information in this prospectus or any prospectus
supplement is accurate as of any date other than the date on the front page of
those documents.

10
<Page>

TABLE OF CONTENTS

<Table>
<Caption>
Page
----

About Intrado Inc........................................................ 2
Risk Factors............................................................. 2
Cautionary Note About Forward-Looking Statements......................... 6
Description of Common Stock.............................................. 7
Selling Stockholders..................................................... 7
Plan of Distribution..................................................... 8
Legal Opinion............................................................ 8
Experts.................................................................. 9
Where You Can Find More Information...................................... 9
</Table>

COMMON STOCK
$0.001 PAR VALUE

INTRADO INC.

PROSPECTUS

JULY 27, 2001