<PAGE>   1
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                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549


                                    FORM 10-Q



           [X] QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF
                       THE SECURITIES EXCHANGE ACT OF 1934

                  FOR THE QUARTERLY PERIOD ENDED MARCH 31, 2000

                                       OR

           [ ] TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF
                       THE SECURITIES EXCHANGE ACT OF 1934

           FOR THE TRANSITION PERIOD FROM _____________TO_____________

                          COMMISSION FILE NO. 001-11899


                         THE HOUSTON EXPLORATION COMPANY
             (EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER)


             DELAWARE                                 22-2674487
 (STATE OR OTHER JURISDICTION OF           (IRS EMPLOYER IDENTIFICATION NO.)
 INCORPORATION OR ORGANIZATION)

                        1100 LOUISIANA STREET, SUITE 2000
                            HOUSTON, TEXAS 77002-5219
              (ADDRESS OF PRINCIPAL EXECUTIVE OFFICES AND ZIP CODE)

                                 (713) 830-6800
              (REGISTRANT'S TELEPHONE NUMBER, INCLUDING AREA CODE)

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



         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
                                               ---    ---

         As of May 2, 2000, 29,008,797 shares of Common Stock, par value $.01
per share, were outstanding.



================================================================================


<PAGE>   2




                         THE HOUSTON EXPLORATION COMPANY

                               TABLE OF CONTENTS

<TABLE>
<CAPTION>
                                                                                                    Page
                                                                                                    ----
<S>      <C>                                                                                        <C>
FACTORS AFFECTING FORWARD LOOKING STATEMENTS ......................................................    3

PART I.  FINANCIAL INFORMATION

Item 1.  Consolidated Financial Statements (unaudited)

         Consolidated Balance Sheets -- March 31, 2000 and December 31, 1999 ......................    4

         Consolidated Statements of Operations -- Three Months Ended March 31, 2000 and 1999 ......    5

         Consolidated Statements of Cash Flows -- Three Months Ended March 31, 2000 and 1999 ......    6

         Notes to the Consolidated Financial Statements ...........................................    7

Item 2.  Management's Discussion and Analysis of Financial Condition and Results of Operations ....   12

Item 3.  Quantitative and Qualitative Disclosures About Market Risk ...............................   16

PART II. OTHER INFORMATION

Item 2.  Changes in Securities and Use of Proceeds

         (c)  Recent Sales of Unregistered Securities .............................................   18

Item 6.  Exhibits and Reports on Form 8-K .........................................................   18

SIGNATURES ........................................................................................   19
</TABLE>


                                      -2-
<PAGE>   3



                  FACTORS AFFECTING FORWARD LOOKING STATEMENTS

         This Quarterly Report on Form 10-Q contains certain "forward-looking
statements" within the meaning of Section 27A of the Securities Act of 1993, as
amended, and Section 21E of the Securities Exchange Act of 1934, as amended. The
words "anticipate," "believe," "estimate," "expect," "project" and similar
expressions are intended to identify forward-looking statements. Without
limiting the foregoing, all statements under the caption "Item 2--Management's
Discussion and Analysis of Financial Condition and Results of Operations"
relating to the Company's anticipated capital expenditures, future cash flows
and borrowings, pursuit of potential future acquisition opportunities and
sources of funding for exploration and development are forward-looking
statements. Such statements are subject to certain risks and uncertainties, such
as the volatility of natural gas and oil prices, uncertainty of reserve
information and future net revenue estimates, reserve replacement risks,
drilling risks, operating risks of natural gas and oil operations, acquisition
risks, substantial capital requirements, government regulation, environmental
matters and competition. Should one or more of these risks or uncertainties
materialize, or should underlying assumptions prove incorrect, actual results
may vary materially from those anticipated, believed, estimated, expected or
projected. For additional discussion of such risks, uncertainties and
assumptions, see "Items 1 and 2. Business and Properties" and "Item 7.
Management's Discussion and Analysis of Financial Condition and Results of
Operations" included in the Company's Annual Report on Form 10-K filed under the
Securities Exchange Act of 1934, as amended.

         Unless otherwise indicated, references to "Houston Exploration" or the
"Company" refer to The Houston Exploration Company and its subsidiaries on a
consolidated basis.


                                      -3-
<PAGE>   4



PART I.  FINANCIAL INFORMATION

ITEM 1.  FINANCIAL STATEMENTS

                         THE HOUSTON EXPLORATION COMPANY
                           CONSOLIDATED BALANCE SHEETS
                                 (IN THOUSANDS)

<TABLE>
<CAPTION>
                                                                                   MARCH 31,    DECEMBER 31,
                                                                                     2000           1999
                                                                                  ----------    ------------
                                                                                  (UNAUDITED)
<S>                                                                               <C>           <C>
ASSETS:
Cash and cash equivalents .....................................................   $    3,412    $     15,502
Accounts receivable ...........................................................       45,085          34,917
Accounts receivable -- Affiliate ..............................................        8,058          12,315
Inventories ...................................................................          969           1,077
                                                                                  ----------    ------------
Prepayments and other .........................................................        1,082           4,084
                                                                                  ----------    ------------
         Total current assets                                                         61,716          64,785
Natural gas and oil properties, full cost method
  Unevaluated properties ......................................................      169,050         164,377
  Properties subject to amortization ..........................................      983,684         956,484
Other property and equipment ..................................................        9,776           9,744
                                                                                  ----------    ------------
                                                                                   1,162,510       1,130,605
Less: Accumulated depreciation, depletion and amortization ....................     (541,247)       (520,489)
                                                                                  ----------    ------------
                                                                                     621,263         610,116
Other assets ..................................................................        3,758           3,582
                                                                                  ----------    ------------
         TOTAL ASSETS .........................................................   $  686,737    $    678,483
                                                                                  ==========    ============

LIABILITIES:
Accounts payable and accrued expenses .........................................   $   53,383    $     56,004
Subordinated note -- Affiliate ................................................           --          80,000
                                                                                  ----------    ------------
         Total current liabilities ............................................       53,383         136,004

Long-term debt and notes ......................................................      279,000         281,000
Deferred federal income taxes .................................................       48,158          43,736
Other deferred liabilities ....................................................          157             153
                                                                                  ----------    ------------
         TOTAL LIABILITIES ....................................................      380,698         460,893

COMMITMENTS AND CONTINGENCIES (SEE NOTE 3)

STOCKHOLDERS' EQUITY:
Common Stock, $.01 par value, 50,000 shares authorized and 29,008,797 shares
issued and outstanding at March 31, 2000 and 23,923,020 shares issued and
outstanding at December 31, 1999, respectively ................................          290             239
Additional paid-in capital ....................................................      311,319         231,370
Retained earnings (deficit) ...................................................       (5,570)        (14,019)
                                                                                  ----------    ------------
         TOTAL STOCKHOLDERS' EQUITY ...........................................      306,039         217,590
                                                                                  ----------    ------------
         TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY ...........................   $  686,737         678,483
                                                                                  ==========    ============
</TABLE>

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


                                      -4-
<PAGE>   5


                        THE HOUSTON EXPLORATION COMPANY
                     CONSOLIDATED STATEMENTS OF OPERATIONS
                     (IN THOUSANDS, EXCEPT PER SHARE DATA)

<TABLE>
<CAPTION>
                                                                   THREE MONTHS ENDED MARCH 31,
                                                                     2000               1999
                                                                   ---------          ---------
                                                                            (UNAUDITED)
<S>                                                                <C>                <C>
REVENUES:
  Natural gas and oil revenues .................................   $  48,918          $  26,520
  Other ........................................................         430                345
                                                                   ---------          ---------
          Total revenues .......................................      49,348             26,865
OPERATING EXPENSES:
  Lease operating ..............................................       6,377              3,962
  Severance tax ................................................       1,606                999
  Depreciation, depletion and amortization .....................      20,757             17,057
  General and administrative, net ..............................       2,189              1,030
                                                                   ---------          ---------
          Total operating expenses .............................      30,929             23,048

Income from operations .........................................      18,419              3,817

Strategic review expenses ......................................       1,752                 --
Interest expense, net ..........................................       4,021              3,021
                                                                   ---------          ---------

Income before income taxes .....................................      12,646                796

Provision for federal income taxes .............................       4,197                 50
                                                                   ---------          ---------

NET INCOME .....................................................   $   8,449          $     746
                                                                   =========          =========

Net income per share ...........................................   $    0.35          $    0.03
                                                                   =========          =========
Net income per share -- assuming dilution ......................   $    0.35          $    0.03
                                                                   =========          =========

Weighted average shares outstanding ............................      23,979             23,895
Weighted average shares outstanding -- assuming dilution .......      24,102             23,959
</TABLE>



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


                                      -5-
<PAGE>   6


                        THE HOUSTON EXPLORATION COMPANY
                     CONSOLIDATED STATEMENTS OF CASH FLOWS
                                 (IN THOUSANDS)

<TABLE>
<CAPTION>
                                                                                THREE MONTHS ENDED MARCH 31,
                                                                                   2000              1999
                                                                                ----------        ----------
                                                                                         (UNAUDITED)
<S>                                                                             <C>               <C>
OPERATING ACTIVITIES:
Net income ..................................................................   $    8,449        $      746
Adjustments to reconcile net income to net cash
  provided by operating activities:
  Depreciation, depletion and amortization ..................................       20,757            17,057
  Deferred income tax expense ...............................................        4,422               276
  Changes in operating assets and liabilities:
     Increase in accounts receivable ........................................       (5,911)           (5,125)
     Increase in inventories ................................................         (108)              (10)
     Increase in prepayments and other ......................................       (3,002)             (198)
     Increase in other assets and liabilities ...............................         (172)             (362)
     Increase (decrease) in accounts payable and accrued expenses ...........       (2,621)            6,284
                                                                                ----------        ----------
Net cash provided by operating activities ...................................       21,814            18,668

INVESTING ACTIVITIES:
Investment in property and equipment ........................................      (31,904)          (28,367)
                                                                                ----------        ----------
Net cash used in investing activities .......................................      (31,904)          (28,367)

FINANCING ACTIVITIES:
Proceeds from long term borrowings ..........................................        2,000            12,000
Repayments of long term borrowings ..........................................       (4,000)           (5,000)
Proceeds from issuance of common stock ......................................           --                 2
                                                                                ----------        ----------

Net cash provided by (used in) financing activities .........................       (2,000)            7,002

Decrease in cash and cash equivalents .......................................      (12,090)           (2,697)

Cash and cash equivalents, beginning of period ..............................       15,502             4,645
                                                                                ----------        ----------

Cash and cash equivalents, end of period ....................................   $    3,412        $    1,948
                                                                                ==========        ==========

Cash paid for interest ......................................................   $   10,092        $    7,351
                                                                                ==========        ==========

Cash paid for taxes .........................................................   $       --        $       --
                                                                                ==========        ==========
</TABLE>


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


                                      -6-
<PAGE>   7


                         THE HOUSTON EXPLORATION COMPANY
                 NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS
                                   (UNAUDITED)

NOTE 1 -- SUMMARY OF ORGANIZATION AND SIGNIFICANT ACCOUNTING POLICIES

         Organization

         Houston Exploration is an independent natural gas and oil company
engaged in the exploration, development, exploitation and acquisition of
domestic natural gas and oil properties. The Company's operations are currently
focused offshore in the Gulf of Mexico and onshore in South Texas, South
Louisiana, the Arkoma Basin, East Texas and West Virginia. Houston Exploration's
strategy is to utilize its geological and geophysical expertise to grow its
reserve base through a combination of exploratory drilling in the Gulf of Mexico
and lower risk, exploitation and development drilling onshore. At December 31,
1999, the Company had net proved reserves of 541 Bcfe, 97% of which were natural
gas and 75% of which were classified as proved developed.

         Houston Exploration began exploring for natural gas and oil in December
1985 on behalf of The Brooklyn Union Gas Company ("Brooklyn Union") and in
September 1996 the Company completed an initial public offering of its common
stock. Brooklyn Union became a subsidiary of KeySpan Corporation ("KeySpan") in
May 1998 through the combination of Brooklyn Union's parent company KeySpan
Energy Corporation and Long Island Lighting Company. As of March 31, 2000, THEC
Holdings Corp., an indirect wholly owned subsidiary of KeySpan, owned
approximately 70% of the outstanding shares of Houston Exploration's common
stock. KeySpan is a diversified energy provider that (i) distributes natural gas
to a customers in the New Yorker City boroughs and Long Island areas; (ii) is
contracted by Long Island Power Authority to manage electricity service to
customers in the Long Island area; and (iii) through its unregulated
subsidiaries, is involved in gas retailing, power plant management and energy
management services.

         Principles of Consolidation

         The consolidated financial statements include the accounts of The
Houston Exploration Company and its wholly owned subsidiary, Seneca Upshur
Petroleum Company (collectively the "Company"). All significant intercompany
balances and transactions have been eliminated.

         Interim Financial Statements

         The balance sheet of the Company at March 31, 2000 and the statements
of operations and cash flows for the periods indicated herein have been prepared
by the Company without audit, pursuant to the rules and regulations of the
Securities and Exchange Commission. Certain information and footnote disclosures
normally included in financial statements prepared in accordance with generally
accepted accounting principles have been condensed or omitted, although the
Company believes that the disclosures contained herein are adequate to make the
information presented not misleading. The balance sheet at December 31, 1999 is
derived from the December 31, 1999 audited financial statements, but does not
include all disclosures required by generally accepted accounting principles.
The Interim Financial Statements should be read in conjunction with the
Consolidated Financial Statements and Notes thereto included in the Company's
Annual Report on Form 10-K for the year ended December 31, 1999.

         In the opinion of management, all adjustments, consisting of normal
recurring accruals, necessary to present fairly the information in the
accompanying financial statements have been included. The results of operations
for such interim periods are not necessarily indicative of the results for the
full year.


                                      -7-
<PAGE>   8


                         THE HOUSTON EXPLORATION COMPANY
                 NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS
                                   (UNAUDITED)


         Reclassifications and Use of Estimates

         The preparation of the financial statements in conformity with
generally accepted accounting principles requires management to make estimates
and assumptions that affect the reported amounts of assets and liabilities and
disclosure of contingent assets and liabilities at the dates of the financial
statements and the reported amounts of revenues and expenses during the
reporting periods. The Company's most significant financial estimates are based
on remaining proved natural gas and oil reserves. Because there are numerous
uncertainties inherent in the estimation process, actual results could differ
from the estimates. Certain reclassifications of prior year items have been made
to conform with current year presentation.

         Net Income Per Share

         Basic earnings per share ("EPS") is calculated by dividing net income
by the weighted average number of shares of common stock outstanding during the
period. No dilution for any potentially dilutive securities is included. Diluted
EPS assumes the conversion of all potentially dilutive securities and is
calculated by dividing net income, as adjusted, by the weighted average number
of shares of common stock outstanding plus all potentially dilutive securities.

<TABLE>
<CAPTION>
                                                                  THREE MONTHS ENDED MARCH 31,
                                                                   2000                  1999
                                                              ---------------        -------------
                                                              (IN THOUSANDS, EXCEPT PER SHARE DATA)
<S>                                                           <C>                    <C>
          Net income ......................................   $         8,449        $         746
                                                              ===============        =============

          Weighted average shares outstanding .............            23,979               23,895
          Add:  dilutive securities .......................
                Options ...................................               123                   64
                                                              ---------------        -------------
          Total weighted average shares outstanding and
            dilutive securities ...........................            24,102               23,959
                                                              ===============        =============

          Net income per share ............................   $          0.35        $        0.03
                                                              ===============        =============
          Net income per share -- assuming dilution .......   $          0.35        $        0.03
                                                              ===============        =============
</TABLE>

         The computation of diluted EPS for the three months ended March 31,
1999 did not assume the conversion of the KeySpan Facility as its inclusion
would have been antidilutive. See Note 4 -- Related Party Transactions.

NOTE 2 -- LONG-TERM DEBT AND NOTES

<TABLE>
<CAPTION>
                                                               MARCH 31, 2000   DECEMBER 31, 1999
                                                               --------------   -----------------
                                                                          (IN THOUSANDS)
<S>                                                            <C>              <C>
          SENIOR DEBT:
          Bank revolving credit facility, due 2003 ..........  $      179,000   $         181,000
          SUBORDINATED DEBT:
          8 5/8% Senior Subordinated Notes, due 2008 ........         100,000             100,000
                                                               --------------   -----------------
              Total long-term debt and notes ................  $      279,000   $         281,000
                                                               ==============   =================
</TABLE>


         The carrying amount of borrowings outstanding under the revolving bank
credit facility approximates fair value as the interest rates are tied to
current market rates. At March 31, 2000, the quoted market value of the


                                      -8-
<PAGE>   9


                         THE HOUSTON EXPLORATION COMPANY
                 NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS
                                   (UNAUDITED)


Company's $100 million of 8 5/8% Senior Subordinated Notes was 96% of the $100
million carrying value or $96 million.

         Credit Facility

         The Company has entered into a revolving bank credit facility (the
"Credit Facility") with a syndicate of lenders led by Chase Bank of Texas,
National Association ("Chase"). The Credit Facility, as amended, provides a
maximum commitment of $250 million, subject to borrowing base limitations. At
March 31, 2000, the Company's borrowing base was $210 million. Up to $2.0
million of the borrowing base is available for the issuance of letters of credit
to support performance guarantees. The Credit Facility matures on March 1, 2003
and is unsecured. At March 31, 2000, $179 million was outstanding under the
Credit Facility and $0.4 million was outstanding in letter of credit
obligations. Subsequent to March 31, 2000, the Company borrowed an additional $2
million under the Credit Facility bringing outstanding borrowings and letters of
credit under the facility to $181.4 million as of May 2, 2000.

         Interest is payable on borrowings under the Credit Facility, at the
Company's option, at (i) a fluctuating rate ("Base Rate") equal to the greater
of the Federal Funds rate plus 0.5% or Chase's prime rate, or (ii) a fixed rate
("Fixed Rate") equal to a quoted LIBOR rate plus a variable margin of 0.875% to
1.625%, depending on the amount outstanding under the Credit Facility. Interest
is payable at calendar quarters for Base Rate loans and at the earlier of
maturity or three months from the date of the loan for Fixed Rate loans. In
addition, the Credit Facility requires a commitment fee of: (i) between 0.25%
and 0.375% per annum on the unused portion of the Designated Borrowing Base, and
(ii) an unavailable commitment fee equal to 33% of the commitment fee in (i)
above on the difference between the lesser of the Facility Amount or the
Borrowing Base and the Designated Borrowing Base.

         The Credit Facility contains covenants of the Company, including
certain restrictions on liens and financial covenants which require the Company
to, among other things, maintain (i) an interest coverage ratio of 2.5 to 1.0 of
earnings before interest, taxes and depreciation ("EBITDA") to cash interest;
(ii) a total debt to capitalization ratio of less than 60%, exclusive of
non-cash charges; and (iii) sets a maximum limit of 70% on the amount of natural
gas production the Company may hedge during any 12 month period. In addition to
maintenance of certain financial ratios, cash dividends and/or purchase or
redemption of the Company's stock is restricted as well as the encumbering of
the Company's gas and oil assets or the pledging of the assets as collateral. As
of March 31, 2000, the Company was in compliance with all such covenants.

         Senior Subordinated Notes

         On March 2, 1998, the Company issued $100 million of 8 5/8% senior
subordinated notes (the "Notes") due January 1, 2008. The Notes bear interest at
a rate of 8 5/8% per annum with interest payable semi-annually on January 1 and
July 1. The Notes are redeemable at the option of the Company, in whole or in
part, at any time on or after January 1, 2003 at a price equal to 100% of the
principal amount plus accrued and unpaid interest, if any, plus a specified
premium if the Notes are redeemed prior to January 1, 2006. Notwithstanding the
foregoing, at any time prior to January 1, 2001, the Company may redeem up to
35% of the original aggregate principal amount of the Notes with the net
proceeds of any equity offering, provided that at least 65% of the original
aggregate principal amount of the Notes remains outstanding immediately after
the occurrence of such redemption. Upon the occurrence of a change of control
(as defined), the Company will be required to offer to purchase the Notes at a
purchase price equal to 101% of the aggregate principal amount thereof, plus
accrued and unpaid interest, if any. The Notes are general unsecured obligations
of the Company and rank subordinate in right of payment to all existing and
future senior debt, including the Credit Facility, and will rank senior or equal
in right of payment to all existing and future subordinated indebtedness.


                                      -9-
<PAGE>   10


                         THE HOUSTON EXPLORATION COMPANY
                 NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS
                                   (UNAUDITED)


NOTE 3 -- COMMITMENTS AND CONTINGENCIES

         The Company is involved from time to time in various claims and
lawsuits incidental to its business. In the opinion of management, the ultimate
liability thereunder, if any, will not have a material adverse affect on the
financial position or results of operations of the Company.

NOTE 4 -- RELATED PARTY TRANSACTIONS

         KeySpan Facility

         On November 30, 1998, the Company entered into a revolving credit
facility with KeySpan (the "KeySpan Facility"), which provided a maximum
commitment of $150 million. The Company borrowed $80 million under the KeySpan
Facility to finance a portion of the November 1998 acquisition of the Mustang
Island A-31 Field. On March 31, 2000, the outstanding borrowings of $80 million
were converted into 5,085,177 shares of the Company's common stock at a
conversion price of $15.732 per share. The conversion price was determined based
upon the average of the closing prices of the Company's common stock, rounded to
three decimal places, as reported under "NYSE Composite Transaction Reports" in
the Wall Street Journal during the 20 consecutive trading days ending three
trading days prior to March 31, 2000. The KeySpan Facility, including the
conversion, was approved by the Company's stockholders at the Company's 1999
annual meeting held April 27, 1999. Borrowings bore interest at LIBOR plus 1.4%
and the Company incurred a quarterly commitment fee of 0.125% on the unused
portion of the maximum commitment. For the three months ended March 31, 2000 and
1999, the Company incurred $1.5 million and $1.3 million, respectively, in
interest and fees to KeySpan. The KeySpan Facility terminated at conversion and
the Company has no further borrowing capacity under the facility. As a result of
the conversion, KeySpan's ownership interest in the Company increased from 64%
to 70%.

         KeySpan Joint Venture

         In March 1999, the Company entered into a joint exploration agreement
(the "KeySpan Joint Venture") with KeySpan Exploration & Production, LLC, a
subsidiary of KeySpan, to explore for natural gas and oil over a term of three
years expiring December 31, 2001. Either party may terminate the KeySpan Joint
Venture at the end of the then current calendar quarter by giving thirty days
prior written notice. Houston Exploration is the joint venture manager and
operator. KeySpan receives 45% of Houston Exploration's working interest in all
prospects drilled under the program. Revenues are shared 55% Houston Exploration
and 45% KeySpan. During the term of the KeySpan Joint Venture, KeySpan pays 100%
of actual intangible drilling costs up to a maximum of $20.7 million per year.
All additional intangible drilling costs incurred during such year are paid
51.75% by KeySpan and 48.25% by Houston Exploration. In addition, Houston
Exploration receives reimbursement of a portion of its general and
administrative costs during the term of the joint venture.

         For the year 2000, KeySpan has agreed to commit approximately $30
million for a 2000 drilling program under the terms of the KeySpan Joint
Venture, as amended. The $30 million commitment will include approximately $18
million for exploratory drilling, $10 million for development and the balance
for general and administrative reimbursements. During the three months ended
March 31, 2000 and 1999, KeySpan incurred approximately $12.5 and $4.2,
respectively, in drilling costs and the Company received approximately $0.6
million and $1.1 million, respectively, in general and administrate
reimbursements.



                                      -10-
<PAGE>   11



                         THE HOUSTON EXPLORATION COMPANY
                 NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS
                                   (UNAUDITED)

         Sale of Section 29 Tax Credits

         Effective January 1, 1997, the Company entered into an agreement to
sell to a subsidiary of KeySpan certain interests in onshore producing wells of
the Company that produce from formations that qualify for tax credits under
Section 29 of the Internal Revenue Code ("Section 29"). Section 29 provides for
a tax credit from non-conventional fuel sources such as oil produced from shale
and tar sands and natural gas produced from geopressured brine, Devonian shale,
coal seams and tight sands formations. KeySpan acquired an economic interest in
wells that are qualified for the tax credits and in exchange, the Company (i)
retained a volumetric production payment and a net profits interest of 100% in
the properties, (ii) received a cash down payment of $1.4 million and (iii)
receives a quarterly payment of $0.75 for every dollar of tax credit utilized.
The Company manages and administers the daily operations of the properties in
exchange for an annual management fee of $100,000. The income statement effect
for both of the three month periods ended March 31, 2000 and 1999 was a $0.2
million reduction to income tax expense, representing benefits received from the
Section 29 tax credits.


                                      -11-
<PAGE>   12


ITEM 2. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS
OF OPERATIONS

         The following discussion is intended to assist in an understanding of
the Company's historical financial position and results of operations for the
three months ended March 31, 2000 and 1999. The Company's consolidated financial
statements and notes thereto included elsewhere in this report contain detailed
information that should be referred to in conjunction with the following
discussion.

GENERAL

         The Houston Exploration Company is an independent natural gas and oil
company engaged in the exploration, development, exploitation and acquisition of
domestic natural gas and oil properties. The Company's offshore properties are
located primarily in the shallow waters of the Gulf of Mexico, and its onshore
properties are located in South Texas, South Louisiana, the Arkoma Basin, East
Texas and the Appalachian Basin in West Virginia. The Company's strategy is to
continue to increase its reserves, production and cash flow through the
application of a three-pronged approach that combines (i) high potential
offshore exploration; (ii) lower risk, high impact exploitation and development
drilling onshore; and (iii) selective opportunistic acquisitions both offshore
and onshore.

         At December 31, 1999, net proved reserves were 541 Bcfe with a
discounted present value of cash flows before income taxes ("PV-10%") of $530
million. The Company's focus is natural gas and approximately 97% of its net
proved reserves at December 31, 1999 were natural gas and approximately 75% were
classified as proved developed. The Company operates approximately 90% of its
production.

         As an independent oil and gas producer, the Company's revenue,
profitability and future rate of growth are substantially dependent upon
prevailing prices for natural gas, oil and condensate, which are dependent upon
numerous factors beyond the Company's control, such as economic, political and
regulatory developments and competition from other sources of energy. The energy
markets have historically been very volatile, as evidenced by the recent
volatility of natural gas and oil prices, and there can be no assurance that
commodity prices will not be subject to wide fluctuations in the future. A
substantial or extended decline in natural gas and oil prices could have a
material adverse effect on the Company's financial position, results of
operations, cash flows, quantities of natural gas and oil reserves that may be
economically produced and access to capital.

         The Company uses the full cost method of accounting for its investment
in natural gas and oil properties. Under the full cost method of accounting, all
costs of acquisition, exploration and development of natural gas and oil
reserves are capitalized into a "full cost pool" as incurred, and properties in
the pool are depleted and charged to operations using the unit-of-production
method based on the ratio of current production to total proved natural gas and
oil reserves. To the extent that such capitalized costs (net of accumulated
depreciation, depletion and amortization) less deferred taxes exceed the present
value (using a 10% discount rate) of estimated future net cash flows from proved
natural gas and oil reserves and the lower of cost or fair value of unproved
properties, such excess costs are charged to operations. If a write down is
required, it would result in a charge to earnings but would not have an impact
on cash flows from operating activities. Once incurred, a write down of oil and
gas properties is not reversible at a later date even if oil and gas prices
increase.

         Recent Developments

         In September 1999, the Company and KeySpan, the Company's majority
stockholder, jointly announced their intention to review strategic alternatives
for Houston Exploration. A full range of strategic transactions was considered
including the possible sale of all or a portion of Houston Exploration. On
February 25, 2000, KeySpan and the Company jointly announced that they had
concluded their review of strategic alternatives for Houston Exploration.
KeySpan also announced that it planned to retain its equity position in Houston
Exploration for the foreseeable future.


                                      -12-
<PAGE>   13


RESULTS OF OPERATIONS

         The following table sets forth the Company's historical natural gas and
oil production data during the periods indicated:

<TABLE>
<CAPTION>
                                                    THREE MONTHS ENDED MARCH 31,
                                                        2000            1999
                                                    ------------    ------------
<S>                                             <C>             <C>
   PRODUCTION:
       Natural gas (MMcf)........................         19,344          16,135
       Oil (MBbls)...............................             75              55
       Total (MMcfe).............................         19,794          16,465

   AVERAGE SALES PRICES:
       Natural gas (per Mcf) realized(1).........   $       2.43    $        1.61
       Natural Gas (per Mcf) unhedged............           2.41             1.61
       Oil (per Bbl).............................          26.23            10.51

   EXPENSES (PER MCFE):
       Lease operating...........................   $       0.32    $        0.24
       Severance tax.............................           0.08             0.06
       Depreciation, depletion and amortization..           1.05             1.04
       General and administrative, net...........           0.11             0.06
</TABLE>


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

(1)   Reflects the effects of hedging.

RECENT FINANCIAL AND OPERATING RESULTS

COMPARISON OF THREE MONTHS ENDED MARCH 31, 2000 AND 1999

         Production. Houston Exploration's production increased 20% from 16,465
million cubic feet equivalent, or MMcfe for the three months ended March 31,
1999 to 19,794 MMcfe for the three months ended March 31, 2000. The increase in
production was primarily attributable to newly developed production offshore at
Mustang A-31 and West Cameron 76 and onshore at the Charco Field, combined with
the resumption of production in late March 1999 at High Island 38 which
experienced a gravel pack failure in August of 1998. Offshore production
increased a total of 40% or 27 MMcfe/day from 67MMcfe/day during the first
quarter of 1999 to 94 MMcfe/day during the first quarter of 2000. Production at
the Charco Field increased 14% or 10 MMcfe/day from 74 MMcfe/day during the
first quarter of 1999 to 84 MMcfe/day during the first quarter of 2000 and
reflects the impact of curtailment of drilling during the fourth quarter of 1998
due to low natural gas prices.

         Natural Gas and Oil Revenues. Natural gas and oil revenues increased
84% from $26.5 million for the three months ended March 31, 1999 to $48.9
million for the three months ended March 31, 2000 as a result of the 20%
increase in production combined with a 51% increase in average realized natural
gas prices, from $1.61 per Mcf for the three months ended March 31, 1999 to
$2.43 per Mcf for the three months ended March 31, 2000.

         Natural Gas Prices. As a result of hedging activities, the Company
realized an average gas price of $2.43 per Mcf for the three months ended March
31, 2000, which was 101% of the average unhedged natural gas price of $2.41 that
otherwise would have been received, resulting in a $0.3 million increase in
natural gas and oil revenues during the first three months of 2000. For the
corresponding three month period of 1999, the average realized gas price of
$1.61 was equal to the average unhedged natural gas price and as a result,
natural gas and oil revenues were reduced only slightly by $0.1 million during
the first quarter of 1999.

         Lease Operating Expenses and Severance Tax. Lease operating expenses
increased 60% from $4.0 million for the three months ended March 31, 1999 to
$6.4 million for the three months ended March 31, 2000. On an Mcfe


                                      -13-
<PAGE>   14


basis, lease operating expenses increased from $0.24 for the first three months
of 1999 to $0.32 for the first three months of 2000. The increase in both the
lease operating expenses and lease operating expense on a per unit basis is
primarily a result of the continued expansion of the Company's operations
combined with higher service costs across the industry. In addition, first
quarter 2000 lease operating expenses include approximately $1.3 million for
offshore well stimulation. Severance tax, which is a function of volume and
revenues generated from onshore production, increased 60% from $1.0 million for
the three months ended March 31, 1999 to $1.6 million for the three months ended
March 31, 2000. On an Mcfe basis, severance tax increased from $0.06 per Mcfe,
for the first three months of 1999 to $0.08 per Mcfe, for the first three months
of 2000. The increase in severance tax expense and severance tax per Mcfe is due
to higher natural gas prices received during the first three months of 2000 as
compared to prices received during the first three months of 1999 and an
increase in production.

         Depreciation, Depletion and Amortization. Depreciation, depletion and
amortization expense increased 22% from $17.1 million for the three months ended
March 31, 1999 to $20.8 million for the three months ended March 31, 2000.
Depreciation, depletion and amortization expense per Mcfe increased slightly by
1% from $1.04 for the three months ended March 31, 1999 to $1.05 for the
corresponding three months in 2000. The increase in depreciation, depletion and
amortization expense reflects the 20% increase in production during the first
quarter of 2000 as compared to the first quarter of 1999 combined with the
slight increase in the depletion rate. The slightly higher rate is a result of a
higher level of capital spending during the first quarter of 2000 as compared to
the first quarter of 1999.

         General and Administrative Expenses. General and administrative
expenses, net of overhead reimbursements received from other working interest
owners, of $1.2 million and $0.9 million, for the three months ended March 31,
1999 and 2000, respectively, increased 120% from $1.0 million for the three
months ended March 31, 1999 to $2.2 for the three months ended March 31, 2000.
Included in reimbursements received from working interest owners were
reimbursements totaling $1.1 million for the first three months of 1999 and $0.6
million for the corresponding period of 2000 received from KeySpan pursuant to
the KeySpan Joint Venture (see Note 4 -- Related Party Transactions). For the
year 2000, the Company and KeySpan agreed to reduce the amount of the general
and administrative reimbursements the Company will receive to a maximum of
$625,000 per quarter. The Company capitalized general and administrative
expenses directly related to oil and gas exploration and development activities
of $1.2 million and $2.2 million, respectively, for the three months ended March
31, 1999 and 2000. The increase in capitalized general and administrative
expenses is a result of higher aggregate general and administrative expenses
during the first three months of 2000 as compared to the corresponding period of
1999. Aggregate general and administrative expenses were higher during the first
three months of 2000 primarily as a result of an increase in incentive
compensation and benefit related expenses. On an Mcfe basis, general and
administrative expenses increased 83% from $0.06 for the three months ended
March 31, 1999 to $0.11 for the three months ended March 31, 2000. The higher
rate per Mcfe during the first three months of 2000 reflects the increase in
aggregate general and administrative expenses and the effect of the reduction in
the reimbursements received pursuant to the KeySpan Joint Venture.

         Strategic Review Expenses. During the first quarter of 2000, the
Company recorded $1.8 million for expenses incurred in the review of strategic
alternatives for the Company. In September 1999, the Company and KeySpan, the
Company's majority stockholder, announced their intention to review strategic
alternatives for KeySpan's investment in Houston Exploration. KeySpan was
assessing the role of Houston Exploration within its future strategic plan, and
was considering a full range of strategic transactions including the possible
sale of all or a portion of Houston Exploration. On February 25, 2000, KeySpan
and the Company jointly announced that the review of strategic alternatives for
Houston Exploration was complete. KeySpan also announced that it planned to
retain its equity position in Houston Exploration for the foreseeable future.

         Interest Expense, Net. Interest expense, net of capitalized interest,
increased 33% from $3.0 million for the three months ended March 31, 1999 to
$4.0 million for the three months ended March 31, 2000. Capitalized interest
increased from $2.8 million for the first three months of 1999 to $3.3 million
for the first three months of 2000. The increase in aggregate interest expense
was attributable to higher average debt levels combined with higher interest
rates during the first three months of 2000 as compared to the corresponding
period of 1999.

         Income Tax Provision. The provision for income taxes decreased from an
expense of $0.05 million for the first three months of 1999 to an expense of
$4.2 million for the first three months of 2000. The increase in income


                                      -14-
<PAGE>   15


tax expense for the three months ended March 31, 2000 as compared to the
corresponding period of 1999 is due to the increase in pretax income for the
three months ended March 31, 2000 as a result of higher natural gas prices and
an increase in production, offset in part by higher operating and interest
expenses and the strategic review expenses.

         Operating Income and Net Income. Although operating expenses increased
34%, the 20% increase in production and the 51% increase in natural gas prices
was significant enough to cause operating income to increase 384% from $3.8
million during the first quarter of 1999 to $18.4 million during the first
quarter of 2000. Net income increased from $0.7 million for the three months
ended March 31, 1999 to $8.4 million for the three months ended March 31, 2000
and reflects the inclusion of $1.8 million ($1.2 million net of tax) in expenses
for review of strategic alternatives for the Company. Absent the strategic
review expenses, net income of the first quarter of 2000 would have been $9.6
million.

LIQUIDITY AND CAPITAL RESOURCES

         The Company has historically funded its operations, acquisitions,
capital expenditures and working capital requirements from cash flows from
operations, equity capital from KeySpan as well as public sources, public debt
and bank borrowings. On March 31, 2000, the Company converted $80 million in
outstanding borrowings under a revolving credit facility established in November
1998 with KeySpan (the "KeySpan Facility") into 5,085,177 shares of common stock
of the Company at a conversion price of $15.732 per share. The KeySpan Facility
was terminated at conversion and as a result of the conversion, KeySpan's
ownership interest in the Company increased from 64% to 70% as of March 31,
2000.

         Cash Flows From Operations. As of March 31, 2000, the Company had
working capital of $8.3 million and $30.6 million of borrowing capacity
available under its revolving bank credit facility. Net cash provided by
operating activities for the three months ended March 31, 2000 was $21.8 million
compared to $18.7 million for the three months ended March 31, 1999. The
increase in working capital during the first three months of 2000 is primarily
related to the timing of cash receipts and payments. Receivables are higher due
to the increase in natural gas revenues caused by an increase in both natural
gas price and production volume, and payables are higher due to an increase in
drilling activity combined with an increase in operating costs. The Company's
cash position decreased during the first three months of 2000 by a net paydown
of borrowings under it revolving bank credit facility of $2 million. Funds used
in investing activities consisted of $31.9 million for investments in property
and equipment. As a result of these activities, cash and cash equivalents
decreased $12.1 million from $15.5 million at December 31, 1999 to $3.4 million
at March 31, 2000.

         Capital Expenditures. During the first quarter of 2000, the Company
invested a total of $31.9 million in natural gas and oil properties. This
included $4.5 million for exploration, $19.5 million for development drilling,
workovers and construction of platforms and pipelines and $7.9 million for
leasehold and leasehold acquisition costs. The Company's capital expenditure
budget for 2000 has been set at $125 million which includes an estimated $15
million for exploration, $90 million for development and facility construction
and $20 million for leasehold and leasehold acquisition costs. The Company does
not include property acquisition costs in its capital expenditure budget as the
size and timing of capital requirements for property acquisitions are inherently
unpredictable. The capital expenditure budget includes development costs
associated with recent discoveries and newly acquired properties and amounts are
contingent upon drilling success. No significant abandonment or dismantlement
costs are anticipated in 2000. The Company will continue to evaluate its capital
spending plans throughout the year. Actual levels of capital expenditures may
vary significantly due to a variety of factors, including drilling results,
natural gas prices, industry conditions and outlook and future acquisitions of
properties. The Company believes cash flows from operations and borrowings under
its revolving bank credit facility will be sufficient to fund these
expenditures. The Company intends to continue to selectively seek acquisition
opportunities for proved reserves with substantial exploration and development
potential both offshore and onshore, although there can be no assurance that the
Company will be able to identify and make acquisitions of proved reserves on
terms it considers favorable.

         Under the terms of the joint exploration agreement between KeySpan and
the Company, as amended, (the "KeySpan Joint Venture"), KeySpan has agreed to
commit approximately $30 million during 2000 to drill approximately six offshore
exploratory wells and to complete the development and facility installation of
the six successful wells drilled under the KeySpan Joint Venture during 1999.
During the first quarter of 2000, KeySpan spent approximately $12.4 and together
with the Company, completed the drilling of three successful exploratory


                                      -15-
<PAGE>   16


wells, two of which were in progress at December 31, 1999 and two unsuccessful
wells, of which one was an exploratory well and one was a development well.

         On May 20, 1999, the Company filed a "shelf" registration with the
Securities and Exchange Commission to offer and sell in one or more offerings up
to a total offering amount of $250 million in securities which could include
shares of the Company's common stock, shares of preferred stock or unsecured
debt securities or a combination thereof. Depending on market conditions and the
Company's capital needs, the Company may utilize the shelf registration in order
to raise capital. The Company would use the net proceeds received from the sale
of any securities for the repayment of debt and/or to fund an acquisition. There
can be no assurance that the Company will be able to consummate such offering on
acceptable terms.

         Capital Structure

         Credit Facility. The Company has entered into a revolving bank credit
facility (the "Credit Facility") with a syndicate of lenders led by Chase Bank
of Texas, National Association ("Chase"). The Credit Facility, as amended,
provides a maximum commitment of $250 million, subject to borrowing base
limitations. At March 31, 2000, the borrowing base was $210 million which will
remain in effect until the next scheduled semi-annual redetermination on
September 1, 2000. Up to $2.0 million of the borrowing base is available for the
issuance of letters of credit to support performance guarantees. The Credit
Facility matures on March 1, 2003 and is unsecured. At March 31, 2000, $179
million was outstanding under the Credit Facility and $0.4 million was
outstanding in letter of credit obligations. Subsequent to March 31, 2000, the
Company borrowed an additional $2 million under the Credit Facility bringing
outstanding borrowings and letters of credit under the facility to $181.4
million as of May 2, 2000.

         Senior Subordinated Notes. On March 2, 1998, the Company issued $100
million of 8 5/8% Senior Subordinated Notes (the "Notes") due January 1, 2008.
The Notes bear interest at a rate of 8 5/8% per annum with interest payable
semi-annually on January 1 and July 1. The Notes are redeemable at the option of
the Company, in whole or in part, at any time on or after January 1, 2003 at a
price equal to 100% of the principal amount plus accrued and unpaid interest, if
any, plus a specified premium if the Notes are redeemed prior to January 1,
2006. Notwithstanding the foregoing, at any time prior to January 1, 2001, the
Company may redeem up to 35% of the original aggregate principal amount of the
Notes with the net proceeds of any equity offering, provided that at least 65%
of the original aggregate principal amount of the Notes remains outstanding
immediately after the occurrence of such redemption. Upon the occurrence of a
change of control (as defined in the indenture governing the Notes), the Company
will be required to offer to purchase the Notes at a purchase price equal to
101% of the aggregate principal amount thereof, plus accrued and unpaid
interest, if any. The Notes are general unsecured obligations of the Company and
rank subordinate in right of payment to all existing and future senior debt,
including the Credit Facility, and rank senior or equal in right of payment to
all existing and future subordinated indebtedness.

ITEM 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

         Natural Gas Hedging. The Company utilizes derivative commodity
instruments to hedge future sales prices on a portion of its natural gas
production to achieve a more predictable cash flow, as well as to reduce its
exposure to adverse price fluctuations of natural gas. While the use of these
hedging arrangements limits the downside risk of adverse price movements, they
may limit future revenues from favorable price movements. The use of hedging
transactions also involves the risk that the counterparties will be unable to
meet the financial terms of such transactions. Hedging instruments used are
swaps, collars and options, and are generally placed with major financial
institutions that the Company believes are minimal credit risks. The Company
accounts for these transactions as hedging activities and, accordingly, gains or
losses are included in natural gas and oil revenues in the period the hedged
production occurs. Unrealized gains and losses on these contracts, if any, are
deferred and offset in the balance sheet against the related settlement amounts.

         As of May 2, 2000, the Company had entered into commodity price hedging
contracts with respect to its gas production as listed below. Natural gas
production during the month of March 2000 was 6,522 MMcf (6,743 million British
thermal units, or MMMbtu).


                                      -16-
<PAGE>   17


<TABLE>
<CAPTION>
                                                     COLLARS
                                  ----------------------------------------------
                                                            NYMEX
                                    VOLUME               CONTRACT PRICE
               PERIOD              (MMMBTU)      AVERAGE FLOOR   AVERAGE CEILING
         ------------------       -----------    -------------   ---------------
<S>                               <C>            <C>             <C>
         April 2000 .............       4,500            2.400             2.959
         May 2000 ...............       4,650            2.400             2.959
         June 2000 ..............       4,500            2.400             2.959
         July 2000 ..............       4,650            2.400             2.959
         August 2000 ............       4,650            2.400             2.959
         September 2000 .........       4,500            2.400             2.959
         October 2000 ...........       4,650            2.640             3.191
         November 2000 ..........       3,000            2.840             3.549
         December 2000 ..........       3,100            2.840             3.549
         January  2001 ..........       1,860            3.000             3.630
         February 2001 ..........       1,680            3.000             3.630
         March 2001 .............       1,860            3.000             3.630
</TABLE>

         These hedging transactions are settled based upon the average of the
reported settlement prices on the New York Mercantile Exchange (the "NYMEX") for
the last three trading days of a particular contract month or the NYMEX price on
the final trading day of the month (the "settlement price").

         For the months October 2000 through March 2001 the Company has 60,000
MMbtu/day hedged under no-cost collars with floating floors. The floating floor
structure allows for a higher floor price in exchange for a lower ceiling. For
example, during January 2001, if the settlement price is up to $2.50 the Company
will receive the settlement price plus $0.50. If the settlement price is between
$2.50 and $3.00 the Company will receive $3.00. If the settlement price is
between $3.00 and $3.63, the Company will receive the settlement price and if
the settlement price is above $3.63, the Company will receive $3.63 (the
ceiling).

         With respect to any particular swap transaction, the counterparty is
required to make a payment to the Company in the event that the settlement price
for any settlement period is less than the swap price for such transaction, and
the Company is required to make payment to the counterparty in the event that
the settlement price for any settlement period is greater than the swap price
for such transaction. For any particular collar transaction, the counterparty is
required to make a payment to the Company if the settlement price for any
settlement period is below the floor price for such transaction, and the Company
is required to make payment to the counterparty if the settlement price for any
settlement period is above the ceiling price for such transaction. The Company
is not required to make or receive any payment in connection with a collar
transaction if the settlement price is between the floor and the ceiling. For
option contracts, the Company has the option, but not the obligation, to buy
contracts at the strike price up to the day before the last trading day for that
NYMEX contract.

         The Company periodically enters into basis swaps (either as part of a
particular hedging transaction or separately) tied to a particular NYMEX-based
transaction to eliminate basis risk. Because substantially all of the Company's
natural gas production is sold under spot contracts that have historically
correlated with the NYMEX price, the Company believes that it has no material
basis risk.


                                      -17-
<PAGE>   18


PART II. OTHER INFORMATION

ITEM 2.  CHANGES IN SECURITIES AND USE OF PROCEEDS

         (c) Recent Sales of Unregistered Securities

         On March 31, 2000, the Company issued 5,085,177 shares of its common
stock to THEC Holdings, Inc., an indirect wholly owned subsidiary of KeySpan
Corporation, the Company's majority stockholder, as a result of the conversion
of the $80 million principal amount outstanding on March 31, 2000 under the
revolving credit facility entered into by the Company and KeySpan on November
30, 1998 (the "KeySpan Facility"). The number of shares issued was based on a
conversion price of $15.732 per share, which was determined based upon the
average of the closing prices of the Company's common stock, rounded to three
decimal places, as reported under "NYSE Composite Transaction Reports" in the
Wall Street Journal during the 20 consecutive trading days ending three trading
days prior to March 31, 2000. The KeySpan Facility, including the conversion,
was approved by the Company's stockholders at the Company's 1999 annual meeting
held April 27, 1999. The 5,085,177 shares of the Company's common stock issued
to THEC Holdings, Inc. are exempt from registration pursuant to Section 3(a)(9)
of the Securities Act of 1933, as amended.


ITEM 6.  EXHIBITS AND REPORTS ON FORM 8-K:

<TABLE>
<CAPTION>

    EXHIBITS                    DESCRIPTION
    --------                    -----------
<S>                 <C>
    *   27.1  --   Financial Data Schedule.
</TABLE>

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

*        Filed herewith.

         (b) Reports on Form 8-K:

             None


                                      -18-
<PAGE>   19


                                   SIGNATURES

         Pursuant to the requirements of the Securities Exchange Act of 1934,
the registrant has duly caused this report to be signed on its behalf by the
undersigned, hereunto duly authorized.

                                   THE HOUSTON EXPLORATION COMPANY

                                    By:           /s/ James G. Floyd
                                       -----------------------------------------
                                                      James G. Floyd
Date: May 2, 2000                         President and Chief Executive Officer



                                    By:         /s/ James F. Westmoreland
                                       -----------------------------------------
                                                    James F. Westmoreland
Date: May 2, 2000                      Vice President, Chief Accounting Officer,
                                                 Comptroller and Secretary


                                      -19-
<PAGE>   20


                                 EXHIBIT INDEX


<TABLE>
<CAPTION>
    EXHIBITS                     DESCRIPTION
    --------                     -----------
<S>                     <C>
    *  27.1     --      Financial Data Schedule.
</TABLE>

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

*      Fixed herewith.