UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549
                                    FORM 10-K

(X)     ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE
        ACT OF 1934 for the fiscal year ended December 31, 1999
                         or
( )     TRANSITION  REPORT  PURSUANT  TO  SECTION  13 OF 15(d) OF THE SECURITIES
        EXCHANGE ACT OF 1934

Commission file number 0-3683

                              TRUSTMARK CORPORATION
             (Exact name of Registrant as specified in its charter)

         MISSISSIPPI                                            64-0471500
(State or other jurisdiction of                                (IRS Employer
incorporation or organization)                            Identification Number)

248 East Capitol Street, Jackson, Mississippi                           39201
  (Address of principal executive offices)                            (Zip Code)

Registrant's telephone number, including area code:   (601) 354-5111

           Securities registered pursuant to Section 12(g) of the Act:
Common Stock, no par value                          Nasdaq Stock Market
   (Title of Class)                       (Name of Exchange on Which Registered)

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  reports),  and  (2) has  been  subject  to such  filing
requirements for the past 90 days. YES(X) NO( )

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 amendment to this
Form 10-K.( )

Based on the closing  sales price of February 18,  2000,  the  aggregate  market
value  of  the  voting  stock  held  by  nonaffiliates  of  the  Registrant  was
$949,921,361.

As of March 1, 2000, there were issued and outstanding  69,381,393 shares of the
Registrant's Common Stock.

                       DOCUMENTS INCORPORATED BY REFERENCE
Portions of the following documents are incorporated by reference to Parts I, II
and III of the  Form  10-K  report:  (1)  Registrant's  1999  Annual  Report  to
Shareholders  (Parts I and II), and (2) Proxy Statement for Registrant's  Annual
Meeting of Shareholders dated March 10, 2000 (Part III).



                              TRUSTMARK CORPORATION

                                    FORM 10-K

                                      INDEX

PART I

Item 1.    Business
Item 2.    Properties
Item 3.    Legal Proceedings
Item 4.    Submission of Matters to a Vote of Securities Holders

PART II

Item 5.    Market  for  the  Registrant's  Common  Stock and Related Stockholder
             Matters
Item 6.    Selected Financial Data
Item 7.    Management's  Discussion  and  Analysis  of  Financial  Condition and
             Results of Operations
Item 7A.   Quantitative and Qualitative Disclosures About Market Risk
Item 8.    Financial Statements and Supplementary Data
Item 9.    Changes  in  and  Disagreements  with  Accountants  On Accounting and
             Financial Disclosure

PART III

Item 10.   Directors and Executive Officers of the Registrant
Item 11.   Executive Compensation
Item 12.   Security Ownership of Certain Beneficial Owners and Management
Item 13.   Certain Relationships and Related Transactions

PART IV

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

SIGNATURES

EXHIBIT INDEX



                              TRUSTMARK CORPORATION
                                 1999 FORM 10-K

                                     PART I

ITEM 1.  BUSINESS

GENERAL

         Trustmark  Corporation   (Trustmark)  is  a  one-bank  holding  company
headquartered  in  Jackson,   Mississippi  which  was  incorporated   under  the
Mississippi  Business  Corporation  Act on August 5, 1968,  and commenced  doing
business in November 1968. Trustmark's primary business activities are conducted
through its wholly-owned subsidiary,  Trustmark National Bank (the Bank) and the
Bank's wholly-owned nonbanking subsidiaries,  Trustmark Financial Services, Inc.
(TFSI) and  Trustmark  Insurance  Agency,  Inc.  (TIA).  The Bank  accounts  for
substantially  all of the assets and  revenues of  Trustmark.  Chartered  by the
State  of  Mississippi  in  1889,  the Bank is also  headquartered  in  Jackson,
Mississippi.  As of January 31,  2000,  the Bank  employed  approximately  2,304
full-time  equivalent  employees.  Neither Trustmark or the Bank has any foreign
activities.  Trustmark also owns all of the stock of F.S.  Corporation and First
Building Corporation, both nonbank Mississippi corporations, which are primarily
dormant and not considered significant subsidiaries.
         Through its  subsidiaries,  Trustmark  operates as a statewide  banking
organization providing banking, investment and insurance solutions to corporate,
institutional  and  individual   customers  within  the  state  of  Mississippi.
Trustmark  engages in business  through its three  reportable  segments:  Retail
Banking, Commercial Banking and Financial Services.
         Retail Banking provides a full range of financial products and services
to  individuals  and small business  customers  through  Trustmark's  133 branch
locations located in 50 Mississippi communities.  In order to allow customers to
do their banking around the clock from their homes or offices,  Trustmark offers
the TrustTouch automated response system.  Customers may also obtain information
about  Trustmark's   services  via  the  Internet  by  accessing  its  web  site
(www.trustmark.com).  In addition, with various deposit products,  customers can
utilize a Trustmark ATM card or ExpressCheck debit cards in one of 155 locations
throughout  Mississippi and Pulse,  Plus,  MasterCard,  Cirrus,  Visa,  American
Express and  Discover  ATM  networks.  Additional  products  provided for Retail
Banking customers include TrustTouch bank-by-telephone and TrustTouchpc service.
Retail Banking customers have access to various personal loan products including
installment  loans,  Express Line of Credit,  Equity Line of Credit, as well as,
small  business loans for inventory  financing,  facility  expansion,  equipment
loans and SBA Program loans.  Trustmark  recognizes the significant impact small
businesses  have on our  market  and have  addressed  these  needs  through  the
creation  of a  specialized  Business  Banking  group.  Trustmark  also lends to
moderate  and lower  income  homeowners  in several  markets  through  Community
Reinvestment Act programs such as the Downpayment Assistance Program and Farmers
Home Multi-Family Home Program.
         Commercial  Banking provides various financial products and services to
corporate  and middle  market  clients  through the Bank's  Commercial  Lending,
Commercial Real Estate,  Indirect Lending and Private Banking groups. One of the



newest  products  offered  is  Business  Advantage  which was  designed  to give
businesses  a total  package  of  business  savings,  financial  management  and
convenient  services in one  comprehensive  package when combined with a regular
commercial  or small  business  checking  account.  In addition,  Trustmark  has
introduced the  ExpressCheck  Business  DebitCard for making cash  disbursements
easier to manage.  Cash  management  services  available for businesses  include
TrustNet PC Balance  Reporting and Money Transfer,  Wholesale and Retail Lockbox
Service,  various Sweep Account products,  Electronic Data Interchange Services,
Account Reconciliation and TaxTel Electronic Tax Depositing. To better deal with
the unique credit needs of larger  businesses,  the Commercial Lending group has
created relationship  managers to work primarily with local middle market firms,
specialized industries such as real estate development and construction,  health
care and automobile  dealers, as well as, large regional and national firms. For
many years,  Trustmark has been active in automobile finance directly throughout
its extensive branch network,  as well as, through a  long-established  indirect
network of automobile dealers.
         Financial  Services  includes  trust and fiduciary  services,  discount
brokerage  services,  insurance  services,  as well as, credit card and mortgage
services.  Trustmark's Card Services offer MasterCard,  VISA, VISA Gold and VISA
Business credit card services to consumers and merchants throughout  Mississippi
as well as the ExpressCheck  debit card. Also included in Financial  Services is
Trustmark's  proprietary mutual fund family called Performance Funds, a group of
six mutual funds designed and managed by Trustmark investment  professionals and
offered through TFSI, the Bank's full service  brokerage  subsidiary.  With $6.2
billion in trust  assets  under  administration,  Trustmark's  Trust  Department
offers a full  line of asset  management  and  custodial  services  through  its
Personal Trust,  Employee  Benefit and Corporate Trust groups.  Trustmark's home
mortgage department services more than $3.7 billion in home loans throughout the
Southeast.  Trustmark's Correspondent Banking Department maintains relationships
with independent  banks across the state,  providing  competitively  priced cash
management  services,  financing  and  clearing  services.   Trustmark's  public
services bankers offer cash management  products,  loans and investment services
tailored  for the needs of public  entities  such as state  agencies,  municipal
government and school districts.  Trustmark significantly expanded its insurance
business in 1999 with the acquisition of the Bottrell  Agency.  This acquisition
will allow Trustmark to provide a variety of risk management  services including
surety bonds, property, casualty, life and health insurance to businesses across
Mississippi.  In  addition,  TIA  has  recently  begun  offering  many  personal
insurance products such as homeowners,  renters, automobile,  personal umbrella,
life and health.
         Additional information on Trustmark's segments can be found in Note 16,
"Segment  Information,"  (page 34) included in Trustmark's 1999 Annual Report to
Shareholders and is incorporated herein by reference.

COMPETITION

         Trustmark and its subsidiaries  compete with other local,  regional and
national  providers of banking,  investment and insurance  products and services
such as other bank holding  companies,  commercial and state banks,  savings and
loan associations,  consumer finance companies,  mortgage  companies,  insurance
agencies,  brokerage firms,  credit unions and financial  service  operations of



major  retailers.  Trustmark  competes in its  markets by  offering  quality and
innovative  products  and services at  competitive  prices.  Within  Trustmark's
market area, none of the competitors are dominant.

SUPERVISION AND REGULATION

         The following  discussion sets forth certain  material  elements of the
regulatory framework applicable to bank holding companies and their subsidiaries
and provides certain specific information relevant to Trustmark.

General
         Trustmark is a registered  bank holding  company under the Bank Holding
Company  Act (BHC) of 1956,  as  amended.  As such,  Trustmark  and its  nonbank
subsidiaries  are  subject  to  the   supervision,   examination  and  reporting
requirements of the BHC Act and the regulations of the Federal Reserve Board. In
addition,  as part of Federal Reserve policy, a bank holding company is expected
to act as a source of financial and managerial  strength to subsidiary banks and
to maintain  resources  adequate to support each subsidiary  bank. Under the BHC
Act, bank holding companies generally may not own or control more than 5% of the
voting shares or substantially all the assets of any company,  including a bank,
without the Federal Reserve  Board's prior approval.  The BHC Act also prohibits
the  acquisition  by a bank holding  company of more than 5% of the  outstanding
voting shares of a bank located outside the state in which the operations of its
banking  subsidiaries  are  principally  conducted,  unless such  acquisition is
specifically authorized by statute of the state in which the bank to be acquired
is located. In addition,  bank holding companies generally may engage,  directly
or  indirectly,  only in banking and such other  activities as are determined by
the Federal  Reserve Board to be closely  related to banking.  Trustmark is also
subject  to  regulation  by  the  State  of   Mississippi   under  its  laws  of
incorporation.  In  addition  to the  impact of  regulation,  Trustmark  and its
subsidiaries may be affected by legislation which can change banking statutes in
substantial and unexpected ways, and by the actions of the Federal Reserve Board
as it attempts to control the money supply and credit  availability  in order to
influence the economy.
         The Bank is a national banking  association and, as such, is subject to
regulation primarily by the Office of the Comptroller of the Currency (OCC) and,
secondarily,  by the Federal Deposit Insurance  Corporation  (FDIC), the Federal
Reserve Board and the  Mississippi  Department of Banking.  Almost every area of
the  operations  and  financial  condition  of the Bank is subject to  extensive
regulation and supervision and to various  requirements and  restrictions  under
federal  and state law  including  loans,  reserves,  investments,  issuance  of
securities,  establishment of branches, capital adequacy,  liquidity,  earnings,
dividends, management practices and the provision of services.
         The Bank's  nonbanking  subsidiaries  are subject to a variety of state
and federal laws. TFSI, the Bank's full service brokerage subsidiary, is subject
to supervision  and regulation by the  Securities and Exchange  Commission,  the
National  Association of Securities Dealers,  Inc., state securities  regulators
and the various  exchanges through which it conducts  business.  TIA, the Bank's
insurance agency subsidiary, is subject to the insurance laws and regulations of
the states in which it is active. All nonbanking  subsidiaries are supervised by
the Federal Reserve Board.



         Trustmark is also under the jurisdiction of the Securities and Exchange
Commission  (SEC)  for  matters  relating  to  the  offering  and  sale  of  its
securities.  Trustmark is subject to the disclosure and regulatory  requirements
of the  Securities Act of 1933, as amended,  and the Securities  Exchange Act of
1934, as amended, as administered by the SEC.

Capital Adequacy
         Trustmark is subject to capital  requirements and guidelines imposed on
bank holding  companies by the Federal  Reserve Board.  The OCC imposes  similar
capital  requirements  and  guidelines  on the Bank.  These  capital  guidelines
involve quantitative and qualitative measures of assets, liabilities and certain
off-balance sheet instruments.
         Trustmark,  like other bank holding companies,  is required to maintain
Tier 1 and total capital equal to at least 4% and 8% of its total  risk-weighted
assets, respectively. At December 31, 1999, Trustmark exceeded both requirements
with Tier 1 capital  and total  capital  equal to 15.39% and 16.76% of its total
risk-weighted  assets,  respectively.  The  Bank  was  in  compliance  with  its
applicable minimum capital requirement at December 31, 1999.
         The Federal  Reserve  Board also  requires  bank  holding  companies to
maintain a minimum leverage ratio. The guidelines provide for a minimum leverage
ratio of 3% for bank holding  companies  that meet certain  specified  criteria,
including  having  the  highest   regulatory   rating.  At  December  31,  1999,
Trustmark's   leverage  ratio  was  9.37%.   The  Bank  is  subject  to  similar
requirements  from  the OCC  and was  also in  compliance  with  its  applicable
leverage ratio requirement at December 31, 1999.
         Failure to meet minimum capital  requirements could subject a bank to a
variety of  enforcement  remedies.  The Federal  Deposit  Insurance  Corporation
Improvement  Act of 1991 (FDICIA),  among other things,  identifies five capital
categories for insured depository institutions.  These include well capitalized,
adequately  capitalized,  undercapitalized,  significantly  undercapitalized and
critically  undercapitalized.  FDICIA requires banking regulators to take prompt
corrective  action whenever  financial  institutions do not meet minimum capital
requirements.  Failure  to meet the  capital  guidelines  could  also  subject a
depository   institution  to  capital  raising  requirements.   In  addition,  a
depository   institution   is   generally   prohibited   from   making   capital
distributions,  including  paying  dividends,  or  paying  management  fees to a
holding company if the institution would thereafter be  undercapitalized.  As of
December 31, 1999, the most recent  notification  from the OCC  categorized  the
Bank as well  capitalized  based on the  prompt  corrective  action  ratios  and
guidelines described above.

Payment of Dividends and Other Restrictions
         There are  various  legal and  regulatory  provisions  which  limit the
amount of dividends the Bank can pay to Trustmark without  regulatory  approval.
Approval of the OCC is required  if the total of all  dividends  declared in any
calendar  year exceeds the total of its net income for that year  combined  with
its retained net income of the  preceding two years.  Without  prior  regulatory
approval,  the Bank may pay Trustmark  dividends  equal to  approximately  $46.5



million plus its net income for the year 2000. In addition,  subsidiary banks of
a bank  holding  company  are  subject  to certain  restrictions  imposed by the
Federal  Reserve Act on extensions of credit to the bank holding  company or any
of its  subsidiaries.  Further,  subsidiary  banks of a bank holding company are
prohibited  from engaging in certain tie-in  arrangements in connection with any
extension of credit,  lease or sale of property or furnishing of any services to
the bank holding company.

FDIC Insurance Assessments
         The deposits of the Bank are insured up to regulatory limits set by the
FDIC and, accordingly,  are subject to deposit insurance  assessments.  The FDIC
has the  authority  to raise or lower  assessment  rates on insured  deposits in
order to achieve certain  designated ratios in the Bank Insurance Fund (BIF) and
the Savings Association Insurance Fund (SAIF) and to impose special assessments.
The FDIC  applies a  risk-based  assessment  system that  places each  financial
institution  into one of nine categories based on capital levels and supervisory
evaluations provided to the FDIC by the institution's primary federal regulator.
Each  institution's  insurance  assessment  rate is then  determined by the risk
category in which it is classified.  At December 31, 1999, the Bank's annual BIF
and SAIF assessment rates were $0.0212 per $100 of insured deposits.

Financial Modernization - The Gramm Leach Bliley Act
         The  Gramm-Leach-Bliley  Financial  Services  Modernization Act of 1999
(Act) was signed by the President and enacted into law on November 12, 1999. The
Act potentially  affects every facet of a depository  institution's  operations.
The Act does three  fundamental  things that affect the  banking  industry:  (a)
repeals key provisions of the Glass Steagall Act to permit  commercial  banks to
affiliate with securities firms, insurance companies and other financial service
providers;  (b)  establishes  a  statutory  framework  pursuant  to  which  full
affiliations  can occur  between  these  entities;  and (c)  provides  financial
services  organizations  with  flexibility  in  structuring  these new financial
affiliations  through a  financial  holding  company  structure  or a  financial
subsidiary.
         As a result of the Act,  banks will be able to offer  customers  a wide
range of  financial  products and services  without the  restraints  of previous
legislation.  In addition,  bank holding companies and other financial  services
providers will be able to commence new activities or new affiliations  much more
readily.  The  primary  provisions  of the Act related to the  establishment  of
financial holding companies and financial subsidiaries became effective on March
11, 2000.

EXECUTIVE OFFICERS OF THE REGISTRANT

         The executive  officers of Trustmark  Corporation  (the Registrant) and
its bank subsidiary,  Trustmark National Bank,  including their ages,  positions
and principal occupations for the last five years are as follows:

Richard  G.  Hickson,  55,  President  and Chief  Executive  Officer,  Trustmark
Corporation and Vice Chairman and Chief Executive  Officer,  Trustmark  National
Bank since May 1997;  President and Chief Operating Officer,  SouthTrust Bank of
Georgia, N.A. from 1995 to May 1997.




T. H. Kendall III, 63,  President and General  Manager,  The Gaddis Farms,  Inc.
(Farming, Banking and Oil Production); Chairman of the Board, Trustmark National
Bank since February 1999;  Chairman of the Board,  Trustmark  Corporation  since
April 1999.

Harry M. Walker,  49,  Secretary,  Trustmark  Corporation;  President  and Chief
Operating Officer - General Banking Group,  Trustmark  National Bank since March
1992.

Gerard R. Host, 45,  Treasurer,  Trustmark  Corporation  since  September  1995;
President and Chief  Operating  Officer - Financial  Services  Group,  Trustmark
National Bank since September 1999; Executive Vice President and Chief Financial
Officer from November 1995 to September 1999; Executive Vice President and Chief
Investment Officer from September 1994 to November 1995.

William O. Rainey,  60,  Executive  Vice  President and Chief  Banking  Officer,
Trustmark National Bank since November 1991.

James S. Lenoir, 57, Executive Vice President and Chief Risk Management Officer,
Trustmark  National Bank since March 1999;  Executive  Vice  President and Chief
Credit  Officer  for  Deposit  Guaranty   National  Bank  and  Deposit  Guaranty
Corporation from February 1983 to April 1998.

Thomas F.  Darnell,  49,  Executive  Vice  President  and Chief Credit  Officer,
Trustmark National Bank since October 1999; Senior Vice President and Manager of
Commercial Lending from January 1993 to October 1999.

George R. Day, 64, Executive Vice President and Senior Credit Officer, Trustmark
National  Bank since  October 1999;  Executive  Vice  President and Chief Credit
Officer from November 1991 to October 1999.

George C. Gunn, 48,  Executive Vice  President and Commercial  Banking  Manager,
Trustmark  National Bank since  September  1999;  Senior Vice President and Real
Estate Lending Manager from April 1987 to September 1999.

Thomas W. Mullen,  57, Executive Vice President and Chief Retail  Administration
Officer, Trustmark National Bank since November 1991.

James M.  Outlaw,  Jr.,  46,  Executive  Vice  President  and Chief  Information
Officer, Trustmark National Bank since September 1999; Senior Vice President and
Operations  Manager from February 1996 to September  1999;  Regional  Manager of
Affiliated Computer Services, Inc. from March 1993 to February 1996.

Zach L. Wasson,  Jr., 46, Executive Vice President and Chief Financial  Officer,
Trustmark  National Bank since September  1999;  Senior Vice President and Chief
Investment  Officer from November  1995 to September  1999;  Vice  President and
Investment/ Treasury Manager from February 1990 to November 1995.

STATISTICAL DISCLOSURES

         The consolidated  statistical disclosures for Trustmark Corporation and
subsidiaries are contained in the following Tables 1 through 12.
         During 1999, Trustmark completed one business combination.  On April 9,
1999,  Trustmark  completed its  acquisition  of the Dan Bottrell  Agency,  Inc.
(Bottrell),  an independent  insurance  agency located in Jackson,  Mississippi,
with  approximately  $9  million  in total  assets.  This  transaction  has been
accounted for as a purchase  business  combination.  The results of  operations,
which are not material,  have been included in the financial statements from the
merger date.



                              TRUSTMARK CORPORATION
                             STATISTICAL DISCLOSURES


TABLE 1 - COMPARATIVE AVERAGE BALANCES - YIELDS AND RATES

       The table below shows the average balances for all assets and liabilities
of Trustmark and the interest income or expense associated with those assets and
liabilities.  The yields or rates  have been  computed  based upon the  interest
income or expense for each of the last three years ended (tax equivalent basis -
$ in thousands):



                                                                     Years Ended December 31,
                                                     --------------------------------------------------------------
                                                                  1999                               1998
                                                     -----------------------------     ----------------------------
                                                      Average               Yield/      Average              Yield/
                                                      Balance    Interest    Rate       Balance    Interest   Rate
                                                     ----------  --------   ------     ----------  --------  ------
Assets
Interest-earning assets:
    Federal funds sold and securities purchased
                                                                                            
         under reverse repurchase agreements         $  159,566  $  7,917    4.96%     $  112,986  $  6,078   5.38%
    Securities available for sale:
        Taxable                                         747,885    46,997    6.28%        670,249    41,765   6.23%
        Nontaxable                                                                             25         2   8.00%
    Securities held to maturity:
        Taxable                                       1,178,849    73,813    6.26%      1,184,223    75,683   6.39%
        Nontaxable                                      122,931    10,048    8.17%        111,415     9,413   8.45%
    Loans, net of unearned income                     3,833,333   317,158    8.27%      3,344,381   293,855   8.79%
                                                     ----------  --------              ----------  --------
    Total interest-earning assets                     6,042,564   455,933    7.55%      5,423,279   426,796   7.87%
Cash and due from banks                                 296,675                           282,487
Other assets                                            304,968                           271,215
Allowance for loan losses                               (65,856)                          (65,232)
                                                     ----------                        ----------
        Total Assets                                 $6,578,351                        $5,911,749
                                                     ==========                        ==========

Liabilities and Shareholders' Equity
Interest-bearing liabilities:
    Interest-bearing demand deposits                 $  719,981  $ 19,128    2.66%     $  734,682  $ 21,623   2.94%
    Savings deposits                                    684,368    11,795    1.72%        660,222    14,006   2.12%
    Time deposits                                     1,558,788    75,828    4.86%      1,652,252    87,940   5.32%
    Federal funds purchased and securities
        sold under repurchase agreements              1,491,515    70,847    4.75%      1,151,920    58,894   5.11%
    Short-term borrowings                               522,243    27,481    5.26%        172,168     9,437   5.48%
                                                     ----------  --------              ----------  --------
        Total interest-bearing liabilities            4,976,895   205,079    4.12%      4,371,244   191,900   4.39%
                                                                 --------                          --------
Noninterest-bearing demand deposits                     880,468                           865,484
Other liabilities                                        64,538                            59,080
Shareholders' equity                                    656,450                           615,941
                                                     ----------                        ----------
        Total Liabilities and Shareholders' Equity   $6,578,351                        $5,911,749
                                                     ==========                        ==========

        Net Interest Margin                                       250,854    4.15%                  234,896   4.33%

Less tax equivalent adjustments:
    Investments                                                     3,517                             3,295
    Loans                                                           3,907                             3,401
                                                                 --------                          --------
        Net Interest Margin per Annual Report                    $243,430                          $228,200
                                                                 ========                          ========







                                                        Years Ended December 31,
                                                     -----------------------------
                                                                  1997
                                                     -----------------------------
                                                      Average               Yield/
                                                      Balance    Interest    Rate
                                                     ----------  --------   ------
Assets
Interest-earning assets:
    Federal funds sold and securities purchased
                                                                    
         under reverse repurchase agreements         $   64,096  $  3,575    5.58%
    Securities available for sale:
        Taxable                                         612,745    36,671    5.98%
        Nontaxable                                          320        37   11.56%
    Securities held to maturity:
        Taxable                                       1,301,175    83,208    6.39%
        Nontaxable                                      103,212     8,938    8.66%
    Loans, net of unearned income                     2,771,662   250,108    9.02%
                                                     ----------  --------
    Total interest-earning assets                     4,853,210   382,537    7.88%
Cash and due from banks                                 269,665
Other assets                                            252,260
Allowance for loan losses                               (63,897)
                                                     ----------
        Total Assets                                 $5,311,238
                                                     ==========

Liabilities and Shareholders' Equity
Interest-bearing liabilities:
    Interest-bearing demand deposits                 $  726,812  $ 21,736     2.99%
    Savings deposits                                    573,528    12,333     2.15%
    Time deposits                                     1,623,384    86,804     5.35%
    Federal funds purchased and securities
        sold under repurchase agreements                912,089    47,236     5.18%
    Short-term borrowings                                67,708     4,778     7.06%
                                                     ----------  -------
        Total interest-bearing liabilities            3,903,521   172,887     4.43%
                                                                 --------
Noninterest-bearing demand deposits                     789,041
Other liabilities                                        57,786
Shareholders' equity                                    560,890
                                                     ----------
        Total Liabilities and Shareholders' Equity   $5,311,238
                                                     ==========

        Net Interest Margin                                       209,650     4.32%

Less tax equivalent adjustments:
    Investments                                                     3,141
    Loans                                                           2,504
                                                                 --------
        Net Interest Margin per Annual Report                    $204,005
                                                                 ========


       Nonaccruing  loans have been  included in the average  loan  balances and
interest  collected  prior to these loans having been placed on  nonaccrual  has
been included in interest income. Loan fees included in interest associated with
the average loan balances are  immaterial.  Interest income and average yield on
tax-exempt  assets have been calculated on a fully tax equivalent  basis using a
tax rate of 35% for each of the three years presented. Certain reclassifications
have  been  made  to the  1998  and  1997  statements  to  conform  to the  1999
presentation.



TABLE 2 - VOLUME AND YIELD/RATE VARIANCE ANALYSIS

       The table below shows the change from year to year for each  component of
the tax equivalent net interest margin in the amount generated by volume changes
and the amount generated by changes in the yield or rate (tax equivalent basis -
$ in thousands)



                                                             1999 Compared to 1998               1998 Compared to 1997
                                                           Increase (Decrease) Due To:         Increase (Decrease) Due To:
                                                         --------------------------------    --------------------------------
                                                                      Yield/                                           Yield/
                                                          Volume       Rate         Net      Volume        Rate         Net
                                                         --------    --------    --------    --------    --------    --------

Interest earned on:
  Federal funds sold and securities purchased
                                                                                                   
    under reverse repurchase agreements                  $  2,345    ($   506)   $  1,839    $  2,635    ($   132)   $  2,503
  Securities available for sale:
        Taxable                                             4,893         339       5,232       3,524       1,570       5,094
        Nontaxable                                              0          (2)         (2)        (26)         (9)        (35)
  Securities held to maturity:
        Taxable                                              (341)     (1,529)     (1,870)     (7,525)          0      (7,525)
        Nontaxable                                            953        (318)        635         696        (221)        475
  Loans, net of unearned income                            41,352     (18,049)     23,303      50,291      (6,544)     43,747
                                                         --------    --------    --------    --------    --------    --------
      Total interest-earning assets                        49,202     (20,065)     29,137      49,595      (5,336)     44,259

Interest paid on:
  Interest-bearing demand deposits                           (433)     (2,062)     (2,495)        241        (354)       (113)
  Savings deposits                                            499      (2,710)     (2,211)      1,847        (174)      1,673
  Time deposits                                            (4,790)     (7,322)    (12,112)      1,604        (468)      1,136
  Federal funds purchased and securities sold
    under repurchase agreements                            16,342      (4,389)     11,953      12,302        (644)     11,658
  Short-term borrowings                                    18,438        (394)     18,044       5,938      (1,279)      4,659
                                                         --------    --------    --------    --------    --------    --------
      Total interest-bearing liabilities                   30,056     (16,877)     13,179      21,932      (2,919)     19,013
                                                         --------    --------    --------    --------    --------    --------
      Change in net interest income on a
          tax equivalent basis                           $ 19,146    ($ 3,188)   $ 15,958    $ 27,663    ($ 2,417)   $ 25,246
                                                         ========    ========    ========    ========    ========    ========


       The  change  in  interest  due to both  volume  and  yield/rate  has been
allocated to change due to volume and change due to  yield/rate in proportion to
the absolute value of the change in each. Tax-exempt income has been adjusted to
a tax  equivalent  basis  using a tax rate of 35% for 1999,  1998 and 1997.  The
balances of nonaccrual  loans and related income  recognized  have been included
for purposes of these computations.



TABLE 3 - SECURITIES AVAILABLE FOR SALE AND SECURITIES HELD TO MATURITY

       The table below  indicates  amortized  costs of securities  available for
sale and held to  maturity  by type at year end for each of the last three years
($ in thousands):




                                                               December 31,
                                                   ------------------------------------

                                                         1999         1998         1997
                                                   ----------   ----------   ----------
Securities available for sale
                                                                    
U. S. Treasury and U. S. Government agencies       $  387,465   $  362,930   $  480,965
Mortgage-backed securities                            347,817      353,300       97,853
                                                   ----------   ----------   ----------
    Total debt securities                             735,282      716,230      578,818
Equity securities                                      44,109       31,166       14,159
                                                   ----------   ----------   ----------
     Total securities available for sale           $  779,391   $  747,396   $  592,977
                                                   ==========   ==========   ==========

Securities held to maturity
U. S. Treasury and U. S. Government agencies       $  188,792   $  132,388   $  221,929
Obligations of states and political subdivisions      270,566      239,441      230,642
Mortgage-backed securities                            931,523      799,584      944,257
Other securities                                          100          100          100
                                                   ----------   ----------   ----------
       Total securities held to maturity           $1,390,981   $1,171,513   $1,396,928
                                                   ==========   ==========   ==========


TABLE 4 - MATURITY DISTRIBUTION AND YIELDS OF SECURITIES AVAILABLE  FOR SALE AND
          SECURITIES HELD TO MATURITY

       The following  table details the  maturities of securities  available for
sale and held to maturity  using  amortized  cost at  December  31, 1999 and the
weighted average yield for each range of maturities (tax equivalent basis - $ in
thousands):



                                                                                   Maturing
                                        --------------------------------------------------------------------------------------------
                                                           After One,           After Five,
                                         Within            But Within           But Within             After
                                        One Year   Yield   Five Years   Yield   Ten Years    Yield   Ten Years   Yield      Total
                                        --------   -----   ----------   -----   ----------   -----   ---------   -----    ----------
Securities available for sale
U. S. Treasury and U. S
                                                                                               
  Government agencies                   $ 90,748   6.14%   $  248,465   6.49%   $    6,344   6.52%   $  41,908   6.52%    $  387,465
Mortgage-backed securities                                         75   8.95%       24,420   6.51%     323,322   6.76%       347,817
                                        --------           ----------           ----------           ---------            ----------
    Total debt securities                 90,748              248,540               30,764             365,230               735,282

Equity securities                                                                                                             44,109
                                        --------           ----------           ----------           ---------            ----------
    Total securities available for sale $ 90,748           $  248,540           $   30,764           $ 365,230            $  779,391
                                        ========           ==========           ==========           =========            ==========

Securities held to maturity
U. S. Treasury and U. S
  Government agencies                   $  9,504   5.97%   $  178,297   6.04%   $      991   6.87%                        $  188,792
Obligations of states and
   political subdivisions                 21,228   7.02%      102,252   7.22%      107,786   7.48%   $  39,300   7.57%       270,566
Mortgage-backed securities                 1,098   6.09%       34,832   6.79%      109,884   6.23%     785,709   6.51%       931,523
Other securities                                                  100   7.50%                                                    100
                                        --------           ----------           ----------          ----------            ----------
    Total securities held to maturity   $ 31,830           $  315,481           $  218,661          $  825,009            $1,390,981
                                        ========           ==========           ==========          ==========            ==========


       Due to the nature of mortgage related  securities,  the actual maturities
of  these  investments  can be  substantially  shorter  than  their  contractual
maturity. Management believes the actual weighted average maturity of the entire
mortgage related portfolio to be approximately 4.42 years.
       As of December 31, 1999,  Trustmark held  securities of one issuer with a
carrying  value  exceeding ten percent of total  shareholders'  equity.  General
obligations  of the State of Mississippi  with a carrying value of  $100,603,733
and an approximate  fair value of  $101,196,184  were held on December 31, 1999.
Included in the aforementioned  State of Mississippi  holdings are bonds with an
aggregate  carrying  value  of  $16,919,958  and an  approximate  fair  value of
$18,016,906  which are known to be  prerefunded or escrowed to maturity by U. S.
Government securities.



TABLE 5 - COMPOSITION OF THE LOAN PORTFOLIO

       The table below shows the carrying value of the loan portfolio at the end
of each of the last five years ($ in thousands):



                                                                              December 31,
                                                   --------------------------------------------------------------
                                                         1999         1998         1997         1996         1995
                                                   ----------   ----------   ----------   ----------   ----------
Real estate loans:
                                                                                        
  Construction and land development                $  297,231   $  251,654   $  195,728   $  168,650   $  144,010
  Secured by 1-4 family residential properties      1,175,775    1,106,735      699,486      543,661      553,997
  Secured by nonfarm, nonresidential properties       555,255      508,194      446,492      398,350      380,734
  Other real estate loans                              78,090       72,445       70,592       73,229       69,422
Loans to finance agricultural production               35,412       39,682       38,466       33,950       37,434
Commercial and industrial                             824,017      721,483      702,361      642,758      616,949
Loans to individuals for personal expenditures        841,059      773,578      701,132      645,829      641,409
Obligations of states and political subdivisions      151,759      141,152       79,178       84,918       63,557
Loans for purchasing or carrying securities            16,160       24,854       17,622       20,469       11,626
Other loans                                            40,177       62,541       32,598       22,759       52,953
                                                   ----------   ----------   ----------   ----------   ----------
        Loans, net of unearned income              $4,014,935   $3,702,318   $2,983,655   $2,634,573   $2,572,091
                                                   ==========   ==========   ==========   ==========   ==========


TABLE 6 - LOAN MATURITIES AND SENSITIVITY TO CHANGES IN INTEREST RATES

       The  table  below  shows  the  amounts  of  loans in  certain  categories
outstanding  as of December 31, 1999,  which,  based on the remaining  scheduled
repayments of principal, are due in the periods indicated ($ in thousands):



                                                                 Maturing
                                                -------------------------------------------
                                                           One Year
                                                 Within     Through    After
                                                One Year     Five      Five
                                                 or Less     Years     Years      Total
                                                --------   --------   --------   ----------

                                                                     
Construction and land development               $198,669   $ 98,562              $  297,231
Other loans secured by real estate (excluding
  loans secured by 1-4 family residential
  properties)                                    189,350    272,731   $171,264      633,345
Commercial and industrial                        476,901    284,716     62,400      824,017
Other loans (excluding loans to individuals)      86,684     38,119    118,705      243,508
                                                --------   --------   --------   ----------
       Total                                    $951,604   $694,128   $352,369   $1,998,101
                                                ========   ========   ========   ==========


       The following  table shows all loans in certain  categories due after one
year classified  according to their  sensitivity to changes in interest rates ($
in thousands):
                                                          Maturing
                                              --------------------------------
                                              One Year
                                              Through     After
                                                Five      Five
                                                Years     Years       Total
                                              --------   --------   ----------
Above loans due after one year which have:
  Predetermined interest rates               $ 596,225   $314,635   $  910,860
  Floating interest rates                       97,903     37,734      135,637
                                             ---------   --------   ----------
        Total                                $ 694,128   $352,369   $1,046,497
                                             =========   ========   ==========


TABLE 7 - NONPERFORMING ASSETS AND PAST DUE LOANS

       The table below shows Trustmark's nonperforming assets and past due loans
at the end of each of the last five years ($ in thousands):



                                                                       December 31,
                                                    -----------------------------------------------
                                                      1999      1998      1997      1996      1995
                                                    -------   -------   -------   -------   -------

                                                                             
Loans accounted for on a nonaccrual basis           $16,671   $13,253   $14,242   $ 8,390   $10,055
Other real estate                                     1,987     1,859     2,340     2,734     3,982
Accruing loans past due 90 days or more               2,043     2,431     2,570     2,407     1,810
                                                    -------   -------   -------   -------   -------
    Total nonperforming assets and loans past due
        90 days or more                             $20,701   $17,543   $19,152   $13,531   $15,847
                                                    =======   =======   =======   =======   =======


     Generally,  a loan is classified as nonaccrual  and the accrual of interest
on such loan is discontinued when a contractual payment of principal or interest
has become 90 days or more past due, unless the loan is both well secured and in
the  process  of  collection,   or  Management  has  serious  doubts  about  the
collectibility  of  principal  and/or  interest  even  though  the  loan  may be
currently  performing.  When a loan  is  placed  in  nonaccrual  status,  unpaid
interest  credited to income in the current and prior years is reversed  against
interest  income.  Interest  received  on  nonaccrual  loans is applied  against
principal.  Loans are restored to accrual  status when the obligation is brought
current  or has  performed  in  accordance  with  the  contractual  terms  for a
reasonable  period of time, and the ultimate  collectibility  of all contractual
principal and interest is no longer in doubt.  Interest which would have accrued
on nonaccrual and  restructured  loans if they had been in compliance with their
original terms is immaterial.  In addition,  interest income on these loans that
was included in net income for the periods presented was immaterial.
       At December 31, 1999,  Management is not aware of any additional credits,
other than those identified  above,  where serious doubts as to the repayment of
principal and interest exist. There are no  interest-earning  assets which would
be required to be disclosed  above if those assets were loans.  Trustmark had no
loan  concentrations  greater  than ten  percent of total loans other than those
loan categories shown in Table 5.



TABLE 8 - ANALYSIS OF THE ALLOWANCE FOR LOAN LOSSES

       The table below  summarizes  Trustmark's loan loss experience for each of
the last five years ($ in thousands):



                                                                          Years Ended December 31,
                                                         --------------------------------------------------------
                                                           1999        1998        1997        1996        1995
                                                         --------    --------    --------    --------    --------
                                                                                          
Balance at beginning of period                           $ 66,150    $ 64,100    $ 63,000    $ 62,000    $ 65,014
Loans charged off:
  Real estate loans                                        (1,953)     (1,121)       (503)     (1,507)     (1,663)
  Loans to finance agricultural production                   (243)        (73)        (79)       (177)       (115)
  Commercial and industrial                                (3,242)     (2,561)     (1,406)     (1,334)       (764)
  Loans to individuals for personal expenditures           (7,863)     (6,698)     (6,353)     (5,651)     (6,300)
  All other loans                                          (1,685)     (1,819)       (619)       (603)       (648)
                                                         --------    --------    --------    --------    --------
    Total charge-offs                                     (14,986)    (12,272)     (8,960)     (9,272)     (9,490)
Recoveries on loans previously charged off:
  Real estate loans                                           156          72          92         325         981
  Loans to finance agricultural production                                  2           7           3          10
  Commercial and industrial                                   791       1,181         877       1,334         736
  Loans to individuals for personal expenditures            3,319       2,960       2,283       2,087       1,848
  All other loans                                           1,348       1,036         775         740         462
                                                         --------    --------    --------    --------    --------
    Total recoveries                                        5,614       5,251       4,034       4,489       4,037
                                                         --------    --------    --------    --------    --------
Net charge-offs                                            (9,372)     (7,021)     (4,926)     (4,783)     (5,453)
Additions to allowance charged to operating expense         9,072       7,771       4,682       5,783       2,439
Other additions to allowance for loan losses                            1,300       1,344
                                                         --------    --------    --------    --------    --------
Balance at end of period                                 $ 65,850    $ 66,150    $ 64,100    $ 63,000    $ 62,000
                                                         ========    ========    ========    ========    ========

Percentage of net charge-offs during period to average
  loans outstanding during the period                       0.24%       0.21%       0.18%       0.19%       0.22%
                                                         ========    ========    ========    ========    ========


       The allowance  for loan losses is  maintained at a level that  Management
and the Board of Directors  believe is adequate to absorb probable losses in the
loan  portfolio,  as well as those  associated  with  off-balance  sheet  credit
instruments  such as letters of credit and  unfunded  lines of credit.  A formal
analysis is prepared  quarterly to assess the adequacy of the allowance for loan
losses.  This  analysis  considers  the  overall  mix and  quality  of the  loan
portfolio,  risk ratings of certain pools of loans,  historical  credit  losses,
volumes and trends in  delinquencies  and non  accruals,  and both  national and
local  economic  conditions.  Since any  allocation is  judgmental  and involves
consideration  of many  factors,  the  allocation  may be more or less  than the
chargeoffs that may ultimately occur.



TABLE 9 - ALLOCATION OF THE ALLOWANCE FOR LOAN LOSSES

       The following  table is a summary by allocation  category of  Trustmark's
allowance  for  loan  losses  at  December  31,  1999.  These  allocations  were
determined  based  upon  Management's  analysis  of the  various  types  of risk
associated  with  Trustmark's  loan  portfolio.  A  discussion  of  Management's
methodology for performing the analysis follows the table ($ in thousands):


        Allocation for pools of
          risk-rated loans                                      $39,676
        Additional allocation for
          risk-rated loans                                          927
        Allocation for selected
          industries                                              4,637
        General allocation for
          all other loans                                        12,075
        Allocation for available lines
          of credit and letters of credit                         1,963
        Unallocated                                               6,572
                                                                -------
            Total                                               $65,850
                                                                =======

       The allowance  for loan losses is maintained at a level which  Management
and the Board of Directors  believe is adequate to absorb probable losses in the
loan portfolio, in addition to possible losses associated with off-balance sheet
credit  instruments such as letters of credit and unfunded lines of credit.  The
adequacy of the allowance is reviewed quarterly utilizing the criteria specified
in the Office of the Comptroller of the Currency's revised Banking Circular 201,
as well as, additional  guidance  provided in the Interagency  Policy Statement.
Loss  percentages are uniformly  applied to pools of risk-rated loans within the
commercial  portfolio.  These  percentages  are  determined  based on  migration
analysis,  previously established floors for each category and economic factors.
In addition,  relationships  of $500,000 or more which are  risk-rated  as other
loans especially  mentioned or substandard and all which are risk-rated doubtful
are reviewed by Trustmark's  Internal Asset Review Department staff to determine
if standard percentages appear to be sufficient to cover probable losses in each
category.  In the  event  that  the  percentages  on any  particular  lines  are
determined  to be  insufficient,  additional  allocations  are made  based  upon
recommendations of lending and Asset Review Department personnel.
       Industry  allocations are made based on  concentrations  of credit within
the portfolio,  as well as, arbitrary designation of certain other industries by
Management.
       The general  allocation  is included in the  allowance to cover  probable
loan losses within portions of the loan portfolio not addressed in the preceding
allocations.  The  types  of  loans  included  in  the  general  allocation  are
residential  mortgage loans,  direct and indirect  consumer  loans,  credit card
loans and  overdrafts.  The  actual  allocation  amount  is based  upon the more
conservative of: loss experience  within these  categories  during the year, the
historical  5-year moving average for each category,  or previously  established
floors.

       The amount  included in the allocation for lines of credit and letters of
credit  consists of a  percentage  of the unused  portion of those lines and the
amount  outstanding  in letters of  credit.  Percentages,  which are the same as
those  applied  to  the  funded  portions  of the  commercial  and  retail  loan
portfolios, are applied to cover any potential losses in these off-balance sheet
categories.
     As the review of the  allowance  for loan  losses  involves  a  significant
degree of judgment by  Management  and is imprecise by nature,  the  unallocated
$6.6 million  relates to issues that cannot be measured on a quantitative  basis
over a prolonged period of time.



TABLE 10 - TIME DEPOSITS OF $100,000 OR MORE

       The table below shows maturities on outstanding time deposits of $100,000
or more at December 31, 1999 ($ in thousands):

3 months or less                            $306,635
Over 3 months through 6 months                67,245
Over 6 months through 12 months              109,715
Over 12 months                                90,102
                                            --------
      Total                                 $573,697
                                            ========


TABLE 11 - SELECTED RATIOS

       The following ratios are presented for each of the last three years:

                                 1999       1998       1997
                                ------     ------     ------

Return on average assets         1.49%      1.41%      1.34%
Return on average equity        14.93%     13.53%     12.67%
Dividend payout ratio           32.35%     30.92%     30.26%
Equity to assets ratio           9.98%     10.42%     10.56%


TABLE 12 - SHORT-TERM BORROWINGS

       The table  below  presents  certain  information  concerning  Trustmark's
short-term borrowings for each of the last three years ($ in thousands):



                                                                1999          1998         1997
                                                             ----------    ----------    ----------
Federal funds purchased and securities
  sold under repurchase agreements:
                                                                                
    Amount outstanding at end of period                      $1,377,420    $1,318,545    $  948,700
    Weighted average interest rate at end of period               4.51%         4.48%         5.72%
    Maximum amount outstanding at any
      month end during each period                           $1,630,136    $1,544,385    $1,003,907
    Average amount outstanding during each period            $1,491,515    $1,151,920    $  912,089
    Weighted average interest rate during each period             4.75%         5.11%         5.18%


                                                                1999
                                                             ----------
Other short-term borrowings:
    Amount outstanding at end of period                      $  733,024
    Weighted average interest rate at end of period               5.86%
    Maximum amount outstanding at any
      month end during each period                           $  757,854
    Average amount outstanding during each period            $  522,243
    Weighted average interest rate during each period             5.26%


     Other  short-term  borrowings  for 1998 and  1997  are not  required  to be
reported since the average balance was less than 30% of shareholders'  equity at
the end of 1999.



ITEM 2. PROPERTIES

         Trustmark's  principal  offices  are housed in a  14-floor  combination
office and bank building located in Jackson,  Mississippi and owned by the Bank.
Approximately  197,000  square  feet  (75%) of the  available  space in the main
office building is allocated to bank use with the remainder  occupied by tenants
on  a  lease  basis.  The  Bank  also  operates  99  full-service  branches,  23
limited-service branches, 11 in-store branches and an ATM network which includes
87 ATMs at on-premise  locations and 68 ATMs located at off-premise  sites.  The
Bank leases 70 of its 181 locations with the remainder being owned.

ITEM 3. LEGAL PROCEEDINGS

         Trustmark and its subsidiaries are parties to lawsuits and other claims
that arise in the  ordinary  course of  business;  some of the  lawsuits  assert
claims  related to the lending,  collection,  servicing,  investment,  trust and
other business  activities;  and some of the lawsuits allege  substantial claims
for damages. The cases are being vigorously contested.  In the regular course of
business,  Management evaluates estimated losses or costs related to litigation,
and provision is made for anticipated losses whenever  Management  believes that
such losses are probable and can be reasonably  estimated.  At the present time,
Management  believes,  based on the  advice  of legal  counsel,  that the  final
resolution  of pending  legal  proceedings  will not have a  material  impact on
Trustmark's consolidated financial position or results of operations.

ITEM 4. SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS

         There were no matters submitted to Trustmark's  shareholders during the
fourth quarter of 1999.


                                     PART II

ITEM 5. MARKET FOR THE REGISTRANT'S COMMON STOCK AND RELATED
                SHAREHOLDER MATTERS

         Trustmark's  common  stock is listed for  trading  on the Nasdaq  Stock
Market. At March 1, 2000, there were approximately  5,100 shareholders of record
of  Trustmark's  common stock.  Other  information  required by this item can be
found in Note 14,  "Shareholders'  Equity,"  (page 31) and the  table  captioned
"Principal  Markets and Prices of  Trustmark's  Stock" (page 38) included in the
Registrant's  1999 Annual Report to Shareholders  and is incorporated  herein by
reference.

ITEM 6. SELECTED FINANCIAL DATA

         The  information  required  by this  item  can be  found  in the  table
captioned  "Selected Financial Data" (page 37) included in the Registrant's 1999
Annual Report to Shareholders and is incorporated herein by reference.




ITEM 7. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION
          AND RESULTS OF OPERATIONS

         The  information  required  by this item can be found in  "Management's
Discussion and Analysis of Financial Condition and Results of Operations" (pages
39-47) included in the  Registrant's  1999 Annual Report to Shareholders  and is
incorporated herein by reference.

ITEM 7A. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

         The  information  required  by this item can be found in  "Management's
Discussion and Analysis of Financial Condition and Results of Operations" (pages
39-41) included in the  Registrant's  1999 Annual Report to Shareholders  and is
incorporated herein by reference.

ITEM 8. FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA

         The  Consolidated  Financial  Statements of Trustmark  Corporation  and
subsidiaries,  the accompanying Notes to Consolidated  Financial  Statements and
the Report of Independent  Public  Accountants are contained in the Registrant's
1999 Annual Report to Shareholders  (pages 15-36) and are incorporated herein by
reference.  The table  captioned  "Summary of Quarterly  Results of  Operations"
(page  37)  is  also  included  in  the  Registrant's   1999  Annual  Report  of
Shareholders and is incorporated herein by reference.

ITEM 9. CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING
          AND FINANCIAL DISCLOSURE

         There has been no change of  accountants  within  the  two-year  period
prior to December 31, 1999.

                                    PART III

ITEM 10. DIRECTORS AND EXECUTIVE OFFICERS OF THE REGISTRANT

         Information  on the directors of the Registrant can be found in Section
II,  "Election of Directors,"  and Section VII,  "Other  Information  Concerning
Directors," contained in Trustmark Corporation's Proxy Statement dated March 10,
2000, and is incorporated  herein by reference.  Information on the Registrant's
executive officers is included in Part I, pages 6 and 7 of this report.

ITEM 11. EXECUTIVE COMPENSATION

         Information   required  by  this  item  can  be  found  in  Section  V,
"Compensation  of Executive  Officers and  Directors,"  and Section VII,  "Other
Information  Concerning  Directors," contained in Trustmark  Corporation's Proxy
Statement dated March 10, 2000, and is incorporated herein by reference.

ITEM 12. SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT

         Information  regarding  security ownership of certain beneficial owners
and  Management  can be found in Section III,  "Voting  Securities and Principal
Holders   Thereof,"  and  Section  IV,   "Ownership  of  Equity   Securities  by
Management,"  contained in Trustmark  Corporation's  Proxy Statement dated March
10, 2000, and is incorporated herein by reference.




ITEM 13. CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS

         Information  regarding certain  relationships and related  transactions
can be found  in  Section  VI,  "Transactions  with  Management,"  contained  in
Trustmark Corporation's Proxy Statement dated March 10, 2000, and is
incorporated herein by reference.

                                     PART IV

ITEM 14. EXHIBITS, FINANCIAL STATEMENT SCHEDULES AND REPORTS ON FORM 8-K

A-1.  Financial Statements

         The  report of  Arthur  Andersen  LLP,  independent  auditors,  and the
following   consolidated  financial  statements  of  Trustmark  Corporation  and
subsidiaries are included in the Registrant's 1999 Annual Report to Shareholders
and are incorporated into Part II, Item 8 herein by reference:

     Report of Independent Public Accountants
     Consolidated  Balance  Sheets  as of  December  31,  1999 and 1998
     Consolidated  Statements  of Income  for the Years Ended December 31, 1999,
       1998 and 1997
     Consolidated  Statements  of Changes in Shareholders'  Equity for the Years
       Ended December 31, 1999, 1998 and 1997
     Consolidated   Statements  of Cash Flows for the Years Ended  December  31,
       1999, 1998 and 1997
     Notes to Consolidated  Financial  Statements  (Notes 1 through 17)
     Selected  Financial  Data,  Summary  of  Quarterly  Results of  Operations,
       and Principal Markets and Prices of  Trustmark's Stock

A-2.     Financial Statement Schedules

         The schedules to the  consolidated  financial  statements  set forth by
Article 9 of Regulation S-X are not required under the related  instructions  or
are inapplicable and therefore have been omitted.

B.       Reports on Form 8-K

         There were no reports  on Form 8-K filed  during the fourth  quarter of
1999.

C.       Exhibits

         The  exhibits  listed in the  Exhibit  Index are filed  herewith or are
incorporated herein by reference.



                                   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.

                              TRUSTMARK CORPORATION


BY:    /s/ Richard G. Hickson                  BY:    /s/ Gerard R. Host
       -----------------------                        ------------------
       Richard G. Hickson                             Gerard R. Host
       President & Chief                              Treasurer (Principal
       Executive Officer                              Financial Officer)

DATE:  March 14, 2000                          DATE:  March 14, 2000



                                   SIGNATURES

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

DATE:  March 14, 2000                BY:  /s/ J. Kelly Allgood
                                          ------------------------------
                                          J. Kelly Allgood, Director

DATE:  March 14, 2000                BY:  /s/ Reuben V. Anderson
                                          ------------------------------
                                          Reuben V. Anderson, Director

DATE:  March 14, 2000                BY:  /s/ Adolphus B. Baker
                                          ------------------------------
                                          Adolphus B. Baker, Director

DATE:                                BY:  ------------------------------
                                          John L. Black, Jr., Director

DATE:  March 14, 2000                BY:  /s/ William C. Deviney, Jr.
                                          ------------------------------
                                          William C. Deviney, Jr., Director

DATE: March 14, 2000                 BY:  /s/ D. G. Fountain, Jr.
                                          ------------------------------
                                          D. G. Fountain, Jr., Director

DATE:  March 14, 2000                BY:  /s/ C. Gerald Garnett
                                          ------------------------------
                                          C. Gerald Garnett, Director

DATE:  March 14, 2000                BY:  /s/ Richard G. Hickson
                                          ------------------------------
                                          Richard G. Hickson, President &
                                          Chief Executive Officer and Director

DATE:  March 14, 2000                BY:  /s/ Matthew L. Holleman III
                                          ------------------------------
                                          Matthew L. Holleman III, Director

DATE: March 14, 2000                 BY:  /s/ Gerard R. Host
                                          ------------------------------
                                          Gerard R. Host, Treasurer (Principal
                                          Financial Officer) and Director

DATE:  March 14, 2000                BY:  /s/ Fred A. Jones
                                          ------------------------------
                                          Fred A. Jones, Director



DATE:  March 14, 2000                BY:  /s/ T.H. Kendall III
                                          ------------------------------
                                          T. H. Kendall III, Chairman of the
                                          Board and Director

DATE: March 14, 2000                 BY:  /s/ Larry L. Lambiotte
                                          ------------------------------
                                          Larry L. Lambiotte, Director

DATE:  March 14, 2000                BY:  /s/ Donald E. Meiners
                                          ------------------------------
                                          Donald E. Meiners, Director

DATE:  March 14, 2000                BY:  /s/ William Neville III
                                          ------------------------------
                                          William Neville III, Director

DATE: March 14, 2000                 BY:  /s/ Richard H. Puckett
                                          ------------------------------
                                          Richard H. Puckett, Director

DATE: March 14, 2000                 BY:  /s/ William K. Ray
                                          ------------------------------
                                          William K. Ray, Director

DATE:  March 14, 2000                BY:  /s/ Charles W. Renfrow
                                          ------------------------------
                                          Charles W. Renfrow, Director

DATE:  March 14, 2000                BY:  /s/ Harry M. Walker
                                          ------------------------------
                                          Harry M. Walker, Secretary
                                          and Director

DATE:  March 14, 2000                BY:  /s/ LeRoy G. Walker, Jr.
                                          ------------------------------
                                          LeRoy G. Walker, Jr., Director

DATE:  March 14, 2000                BY:  /s/ Paul H. Watson
                                          ------------------------------
                                          Paul H. Watson, Jr., Director

DATE:                                BY:
                                          ------------------------------
                                          Kenneth W. Williams, Director

DATE:  March 14, 2000                BY:  /s/ Allen Wood, Jr.
                                          ------------------------------
                                          Allen Wood, Jr., Director



                                  EXHIBIT INDEX

 3-a     Articles  of   Incorporation,  as  amended.   Filed  as  Exhibit  3  to
         Trustmark's  Form  10-K  Annual  Report for the year ended December 31,
         1990, incorporated herein by reference.
 3-b     Bylaws,  as  amended.  Filed as Exhibit  3-b to  Trustmark's  Form 10-K
         Annual Report for the year ended December 31, 1991, incorporated herein
         by reference.
 3-c     Articles  of  Incorporation,  as  amended.  Filed  as  Exhibit  3-c  to
         Trustmark's  Form 10-K Annual  Report for the year ended  December  31,
         1994, incorporated herein by reference.
 3-d     Bylaws,  as  amended.  Filed as Exhibit  3-d to  Trustmark's  Form 10-K
         Annual Report for the year ended December 31, 1997, incorporated herein
         by reference.
 3-e     Articles  of  Incorporation,  as  amended.  Filed  as  Exhibit  3-e  to
         Trustmark's  Form 10-K Annual  Report for the year ended  December  31,
         1998, incorporated herein by reference.
10-a     Deferred  Compensation  Plan for Directors of Trustmark Corporation, as
         amended.  Filed as Exhibit 10 to Trustmark's  Form  10-K  Annual Report
         for the year ended December 31, 1991, incorporated herein by reference.
10-b     Deferred Compensation Plan for Executive Officers of Trustmark National
         Bank.  Filed as Exhibit 10-b to Trustmark's Form 10-K Annual Report for
         the year ended December 31, 1993, incorporated herein by reference.
10-c     Deferred  Compensation  Plan for Directors of First National  Financial
         Corporation,  acquired  October  7,  1994.  Filed  as  Exhibit  10-c to
         Trustmark's  Form 10-K Annual  Report for the year ended  December  31,
         1994, incorporated herein by reference.
10-d     Life Insurance Plan for Executive  Officers of First National Financial
         Corporation,  acquired  October  7,  1994.  Filed  as  Exhibit  10-d to
         Trustmark's  Form 10-K Annual  Report for the year ended  December  31,
         1994, incorporated herein by reference.
10-e     Long Term Incentive Plan for key employees of Trustmark Corporation and
         its  subsidiaries,  approved  March 11, 1997.  Filed as Exhibit 10-e to
         Trustmark's  Form 10-K Annual  Report for the year ended  December  31,
         1996, incorporated herein by reference.
10-f     Employment  Agreement  between  Trustmark  Corporation  and  Richard G.
         Hickson dated May 13, 1997.  Filed as Exhibit 10-f to Trustmark's  Form
         10-K Annual Report for the year ended  December 31, 1997,  incorporated
         herein by reference.
10-g     Change in Control Agreement between Trustmark  Corporation and Harry M.
         Walker dated  December 22, 1997.  Filed as Exhibit 10-g to  Trustmark's
         Form  10-K  Annual  Report  for  the  year  ended  December  31,  1997,
         incorporated herein by reference.
10-h     Change in Control Agreement between Trustmark Corporation and Gerard R.
         Host dated December 22, 1997. Filed as Exhibit 10-h to Trustmark's Form
         10-K Annual Report for the year ended  December 31, 1997,  incorporated
         herein by reference.
10-i     Deferred Compensation  Plan for Directors of Trustmark  National  Bank,
         as amended.  Filed  as  a  part  of  this  report  on Form  10-K.
10-j     Deferred Compensation Plan for  Executive of Trustmark  National  Bank,
         as amended.  Filed as a part of this report on Form 10-K. 13 Only those
         portions  of  the  Registrant's  1999  Annual  Report  to  Shareholders
         expressly incorporated by reference herein are included in this exhibit
         and, therefore, are filed as a part of this report on Form 10-K.
23       Consent of Arthur Andersen LLP.
27       Financial Data Schedule.

         All other exhibits are omitted as they are inapplicable or not required
by the related instructions.