HARKEN ENERGY CORP
10-Q, 1999-08-12
CRUDE PETROLEUM & NATURAL GAS
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<PAGE>   1

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


                       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 JUNE 30, 1999

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

                       FOR THE TRANSITION PERIOD FROM     TO
                                                      ---    ---

                         COMMISSION FILE NUMBER 0-9207

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

            DELAWARE                                           95-2841597
  (State or other jurisdiction of                            (I.R.S. Employer
   incorporation or organization)                          Identification No.)

    16285 PARK TEN PLACE, SUITE 600                               077084
           HOUSTON, TEXAS                                       (Zip Code)
(Address of principal executive offices)

       Registrant's telephone number, including area code (281) 717-1300


       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
                                              ---    ---

       The number of shares of Common Stock, par value $0.01 per share,
outstanding as of August 2, 1999 was 146,989,548.


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

<PAGE>   2

                           HARKEN ENERGY CORPORATION
                           INDEX TO QUARTERLY REPORT
                                 JUNE 30, 1999

<TABLE>
<CAPTION>
                                                                           PAGE
                                                                           ----
<S>                                                                        <C>
PART I. FINANCIAL INFORMATION

     Item 1.   Condensed Financial Statements

               Consolidated Condensed Balance Sheets.......................  4

               Consolidated Condensed Statements of Operations.............  5

               Consolidated Condensed Statements of Stockholders' Equity...  6

               Consolidated Condensed Statements of Cash Flows.............  7

               Notes to Consolidated Condensed Financial Statements........  8


     Item 2.   Management's Discussion and Analysis of Financial Condition
                    and Results of Operations.............................. 24


PART II.  OTHER INFORMATION

               Notes Concerning Other Information.........................  34

SIGNATURES................................................................  37
</TABLE>

                                       2

<PAGE>   3

                         PART I- FINANCIAL INFORMATION



                                       3
<PAGE>   4
                     ITEM 1. CONDENSED FINANCIAL STATEMENTS
                   HARKEN ENERGY CORPORATION AND SUBSIDIARIES
                     CONSOLIDATED CONDENSED BALANCE SHEETS
                                  (Unaudited)

<TABLE>
<CAPTION>
                                                                                DECEMBER 31,     JUNE 30,
                                                                                   1998            1999
                                                                              --------------   -------------
                                                                               (Restated)
<S>                                                                           <C>             <C>
     ASSETS
Current Assets:
   Cash and temporary investments                                             $ 141,545,000    $  78,041,000
   Accounts and notes receivable, net                                             1,605,000        3,009,000
   Related party notes receivable                                                   398,000          466,000
   Prepaid expenses and other current assets                                        615,000        1,643,000
                                                                              -------------    -------------
        Total Current Assets                                                    144,163,000       83,159,000

Property and Equipment, net                                                     166,218,000      186,598,000

Other Assets, net                                                                 9,735,000        9,232,000
                                                                              -------------    -------------
                                                                              $ 320,116,000    $ 278,989,000
                                                                              =============    =============

     LIABILITIES AND STOCKHOLDERS' EQUITY
Current Liabilities:
   Trade payables                                                             $  12,496,000    $   2,362,000
   Accrued liabilities and other                                                  7,350,000        9,062,000
   Revenues and royalties payable                                                   580,000          500,000
                                                                              -------------    -------------
        Total Current Liabilities                                                20,426,000       11,924,000

European Convertible Notes Payable                                               85,000,000       85,000,000

Development Finance Obligation                                                   38,552,000       19,608,000

Commitments and Contingencies (Note 13)

Stockholders' Equity:
   Series F Preferred Stock, $1.00 par value; 15,000 shares
      authorized and issued as of December 31, 1998                                  15,000               --
   Common stock, $0.01 par value; 225,000,000 shares authorized;
     134,758,830 and 145,607,549 shares issued, respectively                      1,348,000        1,456,000
   Additional paid-in capital                                                   327,498,000      327,554,000
   Retained deficit and other comprehensive income                             (150,171,000)    (163,041,000)
   Treasury stock, at cost, 700,000 and 1,218,000 shares held, respectively      (2,552,000)      (3,512,000)
                                                                              -------------    -------------
          Total Stockholders' Equity                                            176,138,000      162,457,000
                                                                              -------------    -------------
                                                                              $ 320,116,000    $ 278,989,000
                                                                              =============    =============
</TABLE>

           The accompanying Notes to Consolidated Condensed Financial
              Statements are an integral part of these Statements.


                                       4
<PAGE>   5

                   HARKEN ENERGY CORPORATION AND SUBSIDIARIES
                CONSOLIDATED CONDENSED STATEMENTS OF OPERATIONS
                                  (Unaudited)

<TABLE>
<CAPTION>
                                                      THREE MONTHS ENDED              SIX MONTHS ENDED
                                                           JUNE 30,                       JUNE 30,
                                                ----------------------------   -----------------------------
                                                     1998           1999            1998            1999
                                                ------------   -------------   -------------    ------------
                                                 (Restated)                     (Restated)
<S>                                             <C>            <C>              <C>            <C>
Revenues:
  Oil and gas operations                        $  2,634,000    $  4,110,000    $  5,334,000    $  7,190,000
  Interest and other income                        2,262,000         990,000       3,924,000       2,246,000
                                                ------------    ------------    ------------    ------------
                                                   4,896,000       5,100,000       9,258,000       9,436,000
                                                ------------    ------------    ------------    ------------

Costs and Expenses:
  Oil and gas operating expenses                   1,346,000       1,744,000       2,728,000       3,202,000
  General and administrative expenses, net         1,766,000       2,578,000       3,524,000       4,367,000
  Depreciation and amortization                    1,286,000       1,470,000       2,416,000       2,848,000
  Interest expense and other, net                  1,064,000       1,514,000       1,705,000       2,873,000
                                                ------------    ------------    ------------    ------------
                                                   5,462,000       7,306,000      10,373,000      13,290,000
                                                ------------    ------------    ------------    ------------
          Loss before income taxes              $   (566,000)   $ (2,206,000)   $ (1,115,000)   $ (3,854,000)

Income tax expense                                    46,000              --          46,000              --
                                                ------------    ------------    ------------    ------------
          Loss before extraordinary item        $   (612,000)   $ (2,206,000)   $ (1,161,000)   $ (3,854,000)

Extraordinary item-charge for reduction of
  unamortized issuance costs                              --         589,000              --         589,000
                                                ------------    ------------    ------------    ------------
          Net loss                              $   (612,000)   $ (2,795,000)   $ (1,161,000)   $ (4,443,000)
                                                ============    ============    ============    ============
Accretion related to preferred stock                (169,000)             --        (169,000)     (8,427,000)
                                                ------------    ------------    ------------    ------------
          Net loss attributed to common stock   $   (781,000)   $ (2,795,000)   $ (1,330,000)   $(12,870,000)
                                                ============    ============    ============    ============

Loss per common share:
  Basic loss before extraordinary item          $      (0.01)   $      (0.01)   $      (0.01)   $      (0.09)
  Extraordinary item                                      --           (0.00)             --           (0.00)
                                                ------------    ------------    ------------    ------------
  Basic loss per common share                   $      (0.01)   $      (0.01)   $      (0.01)   $      (0.09)
                                                ============    ============    ============    ============
  Weighted average shares outstanding            130,452,657     139,817,277     126,394,977     137,297,387
                                                ============    ============    ============    ============


  Diluted loss before extraordinary item        $      (0.01)   $      (0.01)   $      (0.01)   $      (0.09)
  Extraordinary item                                      --           (0.00)             --           (0.00)
                                                ------------    ------------    ------------    ------------
  Diluted loss per common share                 $      (0.01)   $      (0.01)   $      (0.01)   $      (0.09)
                                                ============    ============    ============    ============
  Weighted average shares outstanding            130,452,657     139,817,277     126,394,977     137,297,387
                                                ============    ============    ============    ============
</TABLE>


   The accompanying Notes to Consolidated Condensed Financial Statements are
                     an integral part of these Statements.


                                       5
<PAGE>   6

                   HARKEN ENERGY CORPORATION AND SUBSIDIARIES
           CONSOLIDATED CONDENSED STATEMENTS OF STOCKHOLDERS' EQUITY
                                  (Unaudited)

<TABLE>
<CAPTION>


                                                                          ADDITIONAL
                                          PREFERRED        COMMON          PAID-IN          TREASURY          RETAINED
                                           STOCK            STOCK          CAPITAL            STOCK            DEFICIT
                                        -------------  ---------------  --------------   --------------    --------------
<S>                                     <C>              <C>             <C>              <C>              <C>
Balance, December 31, 1997 (restated)   $          --    $   1,218,000   $ 248,770,000    $          --    $ (92,672,000)

  Issuance of common stock, net                    --           51,000      25,110,000               --               --

  Issuance of preferred stock                  15,000               --      14,437,000               --               --

  Accretion of preferred stock                     --               --       1,846,000               --       (1,846,000)

  Conversions of European notes
     payable                                       --           79,000      37,335,000               --               --

  Treasury shares purchased                        --               --              --       (2,552,000)              --

  Comprehensive income:
     Equity adjustment from
     foreign currency translation                  --               --              --               --               --

     Net loss (restated)                           --               --              --               --      (55,787,000)
          Total comprehensive
           loss (restated)
                                        -------------    -------------   -------------    -------------    -------------

Balance, December 31, 1998 (restated)          15,000        1,348,000     327,498,000       (2,552,000)    (150,305,000)

  Issuance of common stock, net                    --               --          48,000               --               --

  Conversions of Development Finance
     Obligation                                    --          108,000      20,835,000               --               --

  Accretion of preferred stock                     --               --       8,427,000               --       (8,427,000)

  Treasury shares purchased                        --               --              --         (960,000)              --

  Redemption of preferred stock               (15,000)              --     (25,269,000)              --               --

  Settlement of purchase property
     acquisition                                   --               --      (3,985,000)              --               --

  Comprehensive income:
     Net loss                                      --               --              --               --       (4,443,000)
          Total comprehensive loss
                                        -------------    -------------   -------------    -------------    -------------
Balance, June 30, 1999                  $          --    $   1,456,000   $ 327,554,000    $  (3,512,000)   $(163,175,000)
                                        =============    =============   =============    =============    =============

<CAPTION>

                                          ACCUMULATED
                                             OTHER
                                         COMPREHENSIVE
                                         INCOME (LOSS)       TOTAL
                                        ---------------  --------------
<S>                                      <C>             <C>
Balance, December 31, 1997 (restated)    $      92,000   $ 157,408,000

  Issuance of common stock, net                     --      25,161,000

  Issuance of preferred stock                       --      14,452,000

  Accretion of preferred stock                      --              --

  Conversions of European notes
     payable                                        --      37,414,000

  Treasury shares purchased                         --      (2,552,000)

  Comprehensive income:
     Equity adjustment from
     foreign currency translation               42,000

     Net loss (restated)                            --
          Total comprehensive
           loss (restated)                                 (55,745,000)
                                         -------------   -------------

Balance, December 31, 1998 (restated)          134,000     176,138,000

  Issuance of common stock, net                     --          48,000

  Conversions of Development Finance
     Obligation                                     --      20,943,000

  Accretion of preferred stock                      --              --

  Treasury shares purchased                         --        (960,000)

  Redemption of preferred stock                     --     (25,284,000)

  Settlement of property purchase
     acquisition                                    --      (3,985,000)

  Comprehensive income:
     Net loss                                       --      (4,443,000)
          Total comprehensive loss
                                         -------------   -------------
Balance, June 30, 1999                   $     134,000   $ 162,457,000
                                         =============   =============
</TABLE>


   The accompanying Notes to Consolidated Condensed Financial Statements are
                     an integral part of these Statements.


                                       6
<PAGE>   7
                   HARKEN ENERGY CORPORATION AND SUBSIDIARIES
                CONSOLIDATED CONDENSED STATEMENTS OF CASH FLOWS
                                  (Unaudited)


<TABLE>
<CAPTION>
                                                                                   SIX MONTHS ENDED JUNE 30,
                                                                                -------------------------------
                                                                                     1998              1999
                                                                                --------------    -------------
                                                                                  (Restated)
<S>                                                                             <C>              <C>
Cash flows from operating activities:
   Net loss                                                                      $  (1,161,000)   $  (4,443,000)
     Adjustment to reconcile net loss to net cash
       provided by operating activities:
       Depreciation and amortization                                                 2,416,000        2,848,000
       Amortization of issuance costs                                                  352,000          437,000
       Provision for doubtful accounts                                                  15,000               --
       Extraordinary item                                                                   --          589,000

   Change in assets and liabilities:
       Increase in accounts receivable and other assets                               (290,000)      (2,500,000)
       Increase (decrease) in trade payables and other                               2,432,000      (12,107,000)
                                                                                 -------------    -------------
          Net cash provided by (used in) operating activities                        3,764,000      (15,176,000)
                                                                                 -------------    -------------

Cash flows from investing activities:
   Investor advances, net                                                            1,034,000               --
   Capital expenditures                                                            (47,735,000)     (22,131,000)
                                                                                 -------------    -------------
          Net cash used in investing activities                                    (46,701,000)     (22,131,000)
                                                                                 -------------    -------------

Cash flows from financing activities:
   Proceeds from issuances of common stock,
     net of issuance costs                                                           2,075,000           47,000
   Proceeds from issuance of European notes, net                                    81,800,000               --
   Proceeds from issuance of preferred stock, net                                   14,473,000               --
   Transfer from segregated account cash                                            38,647,000               --
   Proceeds from development finance agreements, net                                 9,798,000               --
   Redemption of preferred stock                                                            --      (25,284,000)
   Purchase of treasury stock                                                               --         (960,000)
   Investment in segregated account cash, net                                       (2,071,000)              --
                                                                                 -------------    -------------
          Net cash provided by (used in) financing activities                      144,722,000      (26,197,000)
                                                                                 -------------    -------------

Net increase (decrease) in cash and temporary investments                          101,785,000      (63,504,000)
Cash and temporary investments at beginning of period                               85,740,000      141,545,000
                                                                                 -------------    -------------
Cash and temporary investments at end of period                                  $ 187,525,000    $  78,041,000
                                                                                 =============    =============

Supplemental disclosures of cash flow information:
  Cash paid during the period for:
     Interest                                                                    $       5,000    $   2,125,000
     Income taxes                                                                           --               --
</TABLE>


     The accompanying Notes to Consolidated Condensed Financial Statements
                   are an integral part of these Statements.


                                       7
<PAGE>   8

                   HARKEN ENERGY CORPORATION AND SUBSIDIARIES
              NOTES TO CONSOLIDATED CONDENSED FINANCIAL STATEMENTS
                             JUNE 30, 1998 AND 1999
                                  (Unaudited)

(1)      MANAGEMENT'S REPRESENTATIONS

         In the opinion of Harken Energy Corporation ("Harken"), the
accompanying unaudited consolidated condensed financial statements contain all
adjustments necessary to present fairly its financial position as of December
31, 1998 and June 30, 1999 and the results of its operations and changes in its
cash flows for all periods presented as of June 30, 1998 and 1999. These
adjustments represent normal recurring items.

         The accompanying unaudited condensed financial statements have been
prepared pursuant to the rules and regulations of the Securities and Exchange
Commission ("SEC"). Certain information and note disclosures normally included
in annual financial statements prepared in accordance with generally accepted
accounting principles have been condensed or omitted pursuant to these rules
and regulations, although Harken believes that the disclosures made are
adequate to make the information presented not misleading. It is suggested that
these condensed financial statements be read in conjunction with the financial
statements and the notes thereto included in Harken's Form 10-K/A for the year
ended December 31, 1998.

         The preparation of 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 date of the financial
statements and the reported amounts of revenues and expenses during the
reported period. Actual results could differ from these estimates.

         The results of operations for the six month period ended June 30, 1999
are not necessarily indicative of the results to be expected for the full year.

(2)      ACQUISITION

         On May 19, 1998, Harken, along with Harken Exploration Company, a
wholly-owned subsidiary, purchased working interests in oil and gas properties
located in southern Louisiana (the "Bargo Properties") from St. Martinville
Partners, Ltd. and Bargo Energy Company. The purchase price consisted of
2,716,483 shares of Harken common stock, having an approximate value of
$16,250,000, which were issuable at closing. Pursuant to the Asset Purchase and
Sale Agreement, additional consideration of up to $4,000,000 may be payable by
Harken to the sellers if the sellers are able to obtain new or renewal leases
for certain of the Bargo Properties. In July 1999, Harken obtained sufficient
assignments of new and/or renewed leases related to the Bargo Properties and
paid cash of approximately $4,000,000 to the sellers. See Note 11 --Related
Party Transactions for a discussion of the relationship between Harken and the
sellers.

(3)      MARKETABLE SECURITIES

         Included within cash and temporary investments at December 31, 1998
and June 30, 1999 are certain investments in marketable debt securities having
maturities of sixty days or less. Harken management determines the appropriate
classification of such debt securities at the time of purchase and reevaluates
such designation as of each balance sheet date. Such debt securities are
classified as held-to-maturity as Harken


                                       8
<PAGE>   9

has the positive intent and ability to hold the securities to maturity.
Held-to-maturity securities are stated at amortized cost, adjusted for
amortization of premiums and accretion of discounts to maturity. Such
amortization is included in interest and other income. Harken holds no
securities which are classified as available-for-sale or trading.

The following is a summary of held-to-maturity securities included in cash and
temporary investments:

<TABLE>
<CAPTION>
                                            December 31,         June 30,
                                                1998               1999
                                          -----------------  ------------------

                  <S>                     <C>                <C>
                  Cost                    $    124,398,000   $      57,767,000
                  Estimated fair value    $    124,914,000   $      57,962,000
</TABLE>


         Harken includes in cash and temporary investments other cash and cash
equivalent amounts in addition to the above marketable debt securities.

(4)      PROPERTY AND EQUIPMENT

         A summary of property and equipment follows:


<TABLE>
<CAPTION>
                                                 December 31,      June 30,
                                                     1998            1999
                                                --------------  --------------
                                                  (Restated)
<S>                                             <C>             <C>
Unevaluated oil and gas properties:

  Unevaluated Colombian properties              $  60,162,000    $  37,181,000
  Unevaluated domestic properties                   4,372,000        4,592,000

Evaluated oil and gas properties:

  Evaluated Colombian properties                   68,772,000      111,542,000
  Evaluated domestic properties                    92,807,000       93,339,000
Facilities, gas plants and other property          14,864,000       17,554,000
Less accumulated depreciation and amortization    (74,759,000)     (77,610,000)
                                                -------------    -------------
                                                $ 166,218,000    $ 186,598,000
                                                =============    =============
</TABLE>

(5)       SOUTH AMERICAN OPERATIONS

         Colombian Operations -- Harken's Colombian operations are conducted
through Harken de Colombia, Ltd., a wholly-owned subsidiary of Harken, which
held six exclusive Colombian Association Contracts with Empresa Colombiana de
Petroleos ("Ecopetrol") as of June 30, 1999. These Association Contracts
include the Alcaravan Contract, awarded in 1992, the Bocachico Contract,
awarded in 1994, the Cambulos Contract, awarded in 1995, the Bolivar Contract,
awarded in 1996, the Miradores Contract, awarded in 1997, and the Los Olmos
Contract, awarded in 1998. The Alcaravan and Miradores Contracts currently
cover a combined area of approximately 242,000 acres in the Llanos Basin of
Eastern Colombia. The Bocachico and Cambulos Contracts cover a combined area of
approximately 492,000 acres in the Middle Magdalena Valley of Central Colombia
and the Bolivar Contract covers an area of approximately 250,000 acres in the
Northern Middle Magdalena Valley of Central Colombia. The Los Olmos Contract
covers approximately 374,000 acres in the Lower Magdalena Valley of Northern
Colombia.


                                       9
<PAGE>   10


         Terms of each of the Association Contracts commit Harken to perform
certain activities in accordance with a prescribed timetable. As of August 12,
1999, Harken was in compliance with the requirements of each of the Association
Contracts, as amended. The Cambulos Association Contract required Harken to
have drilled two wells to a depth sufficient to test productive formations for
oil and/or gas by May 16, 1999. During May 1999, Harken received approval from
Ecopetrol to allow for the additional well depth drilled during the recently
drilled Islero #1 well to substitute for the obligation to drill a second
exploratory well within the third contract year. In exchange of the obligation
to drill the fifth year exploratory well for the Alcaravan Contract, Harken has
proposed to relinquish certain contract acreage. During July 1999, Harken
submitted to Ecopetrol the identification of this area of relinquishment.
Harken's proposals include plans to retain those structure areas associated
with Palo Blanco and Anteojos discoveries through the development phase of the
contract period.

         Harken was required to drill the fifth year exploratory well for the
Bocachico Association Contract by March of 1999. Harken is currently in
negotiations with Ecopetrol regarding the Bocachico work obligations as well as
the future development of the Rio Negro field. Ecopetrol has advised Harken
that during these negotiations, Ecopetrol will consider the contract to be in
full compliance.

         Under the terms of the Association Contracts, if, during the first six
years of each contract, Harken discovers one or more fields of producing oil or
gas in quantities that are economically exploitable and Ecopetrol agrees that
such field is economically exploitable (a "commercial discovery"), the term of
that contract will be extended for a period of 22 years from the date of such
commercial discovery. Upon discovery or declaration of a field capable of
commercial production, and upon commencement of production from that commercial
field, Ecopetrol will begin to reimburse Harken for 50% of Harken's successful
well costs expended up to the point of declaration of a commercial discovery
plus, in the case of the Cambulos, Bolivar, Miradores and Los Olmos Contracts,
50% of all seismic and dry well costs incurred prior to the point of
declaration of a commercial discovery. Production from a commercial discovery
will be allocated as follows: Ecopetrol, on behalf of the Colombian government,
will receive a 20% royalty interest in all production, and all production
(after royalty payments) will be allocated 50% to Ecopetrol and 50% to Harken
until cumulative production from all fields (or the particular productive field
under certain of the Association Contracts) in the Association Contract acreage
reaches 60 million barrels of oil. As cumulative production increases in excess
of 60 million barrels of oil, Ecopetrol's share of production will increase
progressively (to a maximum of 75% under certain of the Association Contracts)
with a corresponding decrease in Harken's share of production. After a
declaration of a commercial discovery, Harken and Ecopetrol will be responsible
for all future development costs and operating expenses in direct proportion to
their interest in production. For any fields that are not declared by Ecopetrol
to be a commercial discovery, Harken would retain the rights to all production
after royalty. If Harken proceeds on a sole-risk basis, it will be entitled to
receive Ecopetrol's share of production after royalty, until Harken has
recovered 200% of its development costs, after which time Ecopetrol would
receive its share of production.

         Harken has entered into certain development finance agreements with
outside parties whereby such parties have received a beneficial interest in
certain of Harken's Colombian operations. For further discussion, see Note 6 -
Development Finance and Operating Agreements.

        Costa Rica Operations -- In the fourth quarter of 1998, Harken
announced that it signed an agreement to participate in approximately 1.4
million acres in the North and South Limon Back Arc Basin onshore and offshore
Costa Rica, Central America covered by a bid awarded for an Exploration and


                                       10
<PAGE>   11

Production Contract ("Costa Rica Contract"). The Costa Rica Contract area is
comprised of Blocks 2, 3, 4 and 12 from Costa Rica's initial bidding round in
October of 1997. Two of the Blocks are located onshore and two are located
offshore within Costa Rica's Caribbean territorial waters. The Costa Rica
Contract is subject only to final agreements with the Republic of Costa Rica,
including the assignment of the Costa Rica Contract to Harken, which is
expected to be signed during the fourth quarter of 1999.

         Harken's participation in Costa Rica is structured whereby a
wholly-owned Harken subsidiary owns 80% of the stock of a Nevada limited
liability corporation, Harken Costa Rica Holdings LLC ("HCRH"). An affiliate of
MKJ Xploration, Inc. ("MKJ") owns the remaining 20% of the subsidiary. Under
the terms of the agreement between Harken and MKJ, Harken will pay $4.2 million
to MKJ to purchase its share of the Costa Rica Contract rights from MKJ once an
agreement and assignment are signed with the Republic of Costa Rica.
Additionally, Harken is committed to contribute an additional $8 million to
fund the work program obligations and maintain its 80% ownership under the
proposed Costa Rica Contract agreement. In connection with Harken's
participation in the Costa Rica Contract rights, Harken issued to MKJ certain
non-registered, non-transferable stock purchase warrants to purchase 200,000
shares of Harken common stock which are currently exercisable by the holders
thereof on or before November 12, 2001 at an exercise price of $3.50 per share.

(6)       DEVELOPMENT FINANCE AND OPERATING AGREEMENTS

         Rochester Agreement -- Harken de Colombia, Ltd. entered into an
operating agreement (the "Rochester Agreement") with Rochester Energy
Corporation ("Rochester", a Canadian corporation) pursuant to which Rochester
has paid 33 1/3% of the aggregate costs of the Estero #1 well and related
production facilities on the Palo Blanco prospect, 25% of the aggregate costs
related to the Estero #3 well, and 25% of the aggregate costs of the initial
well drilled on the Anteojos prospect, the Canacabare #1, all of which are
located within the Alcaravan Contract area, along with 25% of the aggregate
costs related to the Miradores Association Contract. In exchange, Rochester
acquired a beneficial interest equal to 25% of the interest held by Harken de
Colombia, Ltd. in the Palo Blanco and Anteojos prospect operations. The Estero
#1 well was drilled in the first half of 1997 and Estero #3 was spudded in
December 1997. The Canacabare #1 well began drilling March 1998, and testing of
the well has been delayed until late 1999 due to weather conditions.

         In May 1999, Harken signed a definitive purchase and sale agreement
pursuant to which Harken purchased all of the interests held by Rochester in
the Alcaravan and Miradores Association Contract areas. Under the terms of the
purchase and sale agreement entered into between Harken and Rochester, Harken
forgave all amounts owed by Rochester to Harken and issued 2,600,000 shares of
Harken common stock. The purchase and sale agreement with Rochester was closed
in July 1999.

         Parkcrest Financing Agreement - In January 1997, Harken de Colombia,
Ltd. entered into a financing agreement ("the Parkcrest Financing Agreement")
with Parkcrest Explorations, Ltd. ("Parkcrest", a Canadian corporation)
pursuant to which Parkcrest paid 33 1/3% of the aggregate costs of the Estero
#1 well and related production facilities on the Palo Blanco prospect, 33 1/3%
of the aggregate costs of the initial well drilled on the Anteojos prospect,
the Canacabare #1, and 25% of the aggregate costs related to the Estero #3
well, all of which are located within the Alcaravan Contract area. In addition,
Parkcrest was to pay 33 1/3% of the aggregate costs of the initial well to be
drilled under the Miradores Association Contract. Parkcrest was also
responsible for their contracted percentage share of costs related to seismic
on


                                       11
<PAGE>   12

the Alcaravan and Miradores Contract areas. In exchange, Parkcrest, upon its
full performance, was to acquire a beneficial interest equal to 25% of the
interest held by Harken de Colombia, Ltd. in these prospects.

         In April 1998, Harken and Parkcrest entered into a Loan and Security
Agreement (the "Parkcrest Loan Agreement") whereby Harken agreed to provide up
to $2,600,000 to Parkcrest to be used as needed by Parkcrest to finance its
share of costs under the Parkcrest Financing Agreement. Under the terms of the
Parkcrest Loan Agreement, any outstanding loans bore interest at 6% per annum
in addition to a monthly management fee payable to Harken of $37,500 per month.
Any outstanding balance pursuant to the Parkcrest Loan Agreement was due and
payable by Parkcrest on November 30, 1998 secured by 50% of Parkcrest's
beneficial interest in the Palo Blanco prospect. In December 1998, Harken
purchased all of the interests held by Parkcrest in the Alcaravan and Miradores
Association Contract areas. Under the terms of the purchase agreement entered
into between Harken and Parkcrest, Harken forgave a loan balance of
approximately $2,280,000 outstanding at the date of the purchase and issued
1,350,000 shares of Harken common stock.

         Rio Negro Development Finance Agreement -- In October 1995, Harken
entered into a Development Finance Agreement (the "Rio Negro Development
Finance Agreement") with Arbco Associates L.P., Offense Group Associates L.P.,
Kayne Anderson Nontraditional Investments L.P. and Opportunity Associates L.P.
(collectively, the "Rio Negro Investors"), pursuant to which the Rio Negro
Investors provided $3,500,000 to Harken to finance drilling on the Rio Negro
prospect in the Bocachico Contract area in exchange for the right to receive
future payments from Harken equal to 40% of the net profits that Harken de
Colombia, Ltd. may derive from the sale of oil and gas produced from the Rio
Negro prospect (the "Rio Negro Participation").

         In March 1997, Harken and the Rio Negro Investors entered into a
Conversion Agreement whereby Harken purchased 75% of the Rio Negro
Participation relating to the Rio Negro Development Finance Agreement in
exchange for 900,000 restricted shares of Harken common stock which were issued
within 30 days following closing. From the remaining 25% of the Rio Negro
Participation retained, the Rio Negro Investors have the right to receive 10%
of the net profits that Harken de Colombia, Ltd. may derive from the sale of
oil and gas produced from the Rio Negro prospect.

         EnCap Development Finance Agreement -- In October 1997, Harken entered
into a Development Finance Agreement (the "EnCap Development Finance
Agreement") with EnCap Energy Capital Fund III, L.P., EnCap Energy Capital Fund
III-B, L.P., BOCP Energy Partners, L.P. and Energy Capital Investment Company
PLC (collectively the "EnCap Investors"), pursuant to which the EnCap Investors
provided $25 million (the "Payment Amount"), less a 2% investment banking fee,
to Harken to finance the planned drilling of the initial wells on three
unexplored oil and gas prospects in the Middle Magdalena Basin of Colombia. As
part of the transaction, Harken issued 150,000 shares of Harken common stock to
the EnCap Investors. The three well exploratory program contemplates the
drilling of one prospect on Harken's Bocachico Contract area and the drilling
of two prospects on Harken's Cambulos Contract area. In exchange, the EnCap
Investors received the right to receive future payments from Harken equal to 5%
of the net profits that Harken de Colombia, Ltd. may derive from the sale of
oil and gas produced from each of the three prospects if the planned drilling
on the prospect is successful (the "EnCap Participation"). Pursuant to the
EnCap Development Finance Agreement, Harken is obligated to drill each of the
three wells prior to October 2000.


                                      12
<PAGE>   13

         Pursuant to the EnCap Development Finance Agreement, the EnCap
Investors have the right, for a period of two years beginning in October 1998,
to convert all or part of the EnCap Participation into shares of Harken common
stock. The number of shares of Harken common stock to be issued upon conversion
of the EnCap Participation will be equal to the quotient of (i) the Payment
Amount (less any distributions made in respect of the EnCap Participation) plus
an amount equal to 15% interest per annum on the net Payment Amount compounded
monthly (the "Invested Amount"), divided by (ii) the market price of Harken
common stock at the time of conversion. During the same two year period, Harken
also has the right to convert the EnCap Participation into shares of Harken
common stock with the number of shares of Harken common stock to be issued to
be equal to the quotient of (i) the Payment Amount (less any distribution made
in respect of the EnCap Participation) plus an amount equal to 25% interest per
annum on the net Payment Amount compounded monthly, divided by (ii) the market
price of Harken common stock at the time of conversion. Harken can also elect
to pay cash upon any conversion of the EnCap Participation in lieu of issuing
Harken common stock. The EnCap Development Finance Agreement also provides for
additional shares of Harken common stock to be issued by Harken in the event of
a conversion to the extent that the EnCap Investors do not, under certain
circumstances, realize the Invested Amount from the sale of shares of Harken
common stock issued at the conversion. See Note 11 -- Related Party
Transactions for a discussion of the relationship between Harken and the EnCap
Investors.

         In April 1999, Harken received notice from EnCap Investments L.C. that
the EnCap Investors have elected to exercise their option to convert a 40%
portion of the EnCap Participation into shares of Harken common stock. Pursuant
to the EnCap Development Finance Agreement, the EnCap Investors received
6,481,512 shares of Harken common stock.

         European Development Finance Agreement -- In December 1997, Harken
entered into a Development Finance Agreement and other related agreements (the
"European Development Finance Agreement") whereby Sidro S.A., Lambertine
Holdings, Ltd. and Rauscher Pierce and Clark (collectively the "European
Investors") purchased all of the outstanding common stock of Harken Capital
Corporation, ("HCC", a newly-formed U.S. corporation) for $7 million. Pursuant
to the European Development Finance Agreement, HCC then provided the $7 million
to Harken in January 1998 to finance a portion of the cost of the three-well
exploratory program discussed above pursuant to the EnCap Development Finance
Agreement. In exchange, HCC received the right to receive future payments from
Harken equal to 1.4% of the net profits that Harken de Colombia, Ltd. may
derive from the sale of oil and gas produced from each of the three prospects
if the planned drilling on the prospect is successful. As part of the
transaction, Harken issued 42,000 shares of Harken common stock to the European
Investors and paid a cash fee of $175,000 to one of the European Investors.

         In March 1998, Harken received directly an additional $3 million
pursuant to a Development Finance Agreement with Faisal Finance ("Faisal"),
which contains terms substantially identical to the EnCap Development Finance
Agreement, including conversion provisions which began in March 1999. In
exchange, Faisal received the right to receive future payments from Harken
equal to 0.6% of the net profits that Harken de Colombia, Ltd. may derive from
the sale of oil and gas produced from each of the three prospects discussed
above pursuant to the EnCap Development Finance Agreement if the planned
drilling on the prospect is successful. As part of this transaction, Harken
issued 18,000 shares of Harken common stock and paid a cash fee of $75,000 to a
financial advisor.

         Pursuant to the European Development Finance Agreement, the European
Investors, Faisal and Harken each have the right to convert the interest into
shares of common stock of Harken pursuant to


                                      13
<PAGE>   14

conversion rights terms identical to those terms related to the EnCap
Development Finance Agreement, for a period of two years beginning in December
1998. In December 1998, one of the European Investors exercised their right to
convert all their Institutional Participation into shares of Harken common
stock. Harken elected to pay cash of approximately $2.3 million in lieu of
issuing Harken common stock. In April and May 1999, respectively, Harken
received notice from the remaining European Investors that they had elected to
exercise their option to convert all of their Institutional Participation into
shares of Harken common stock. Pursuant to the European Development Finance
Agreement, the European Investors received 1,908,637 and 1,121,738 shares,
respectively, of Harken common stock. Also, in April 1999, Harken received
notice from Faisal that it had elected to exercise its option to convert a
two-thirds portion of its Institutional Participation into shares of Harken
common stock. Pursuant to the Development Finance Agreement with Faisal, Faisal
received 1,316,829 shares of Harken common stock.

         Accounting for Development Finance Agreements - Harken accounts for
the Development Finance Agreements Invested Amount, including the accrued 15%
per annum increase, as a long-term obligation, as such Invested Amount is
payable to the EnCap Investors, the European Investors and Faisal (the
"Institutional Investors") should the Institutional Investors elect to convert
their Institutional Participation into shares of Harken common stock. The 15%
per annum increase in the Invested Amount, plus the amortization of the
issuance costs associated with the Development Finance Agreements, is reflected
as Interest Expense and Other, net of amounts capitalized, in the accompanying
consolidated condensed statements of operations. As Institutional Participation
is converted into shares of Harken common stock, a pro-rata portion of
unamortized issuance costs associated with the Development Finance Agreements
will be charged to income as an extraordinary item.

(7)      EUROPEAN CONVERTIBLE NOTES PAYABLE

         5 1/2% European Notes - On June 11, 1997, Harken issued to qualified
purchasers a total of $70 million in 5 1/2% Senior Convertible Notes (the "5
1/2% European Notes") which were to mature on June 10, 2002. In connection with
the sale and issuance of the 5 1/2% European Notes, Harken paid approximately
$5,174,000 from the 5 1/2% European Notes proceeds for commissions and issuance
costs. Interest incurred on these notes was payable semi-annually in June and
December of each year to maturity or until the 5 1/2% European Notes were
converted. Such 5 1/2% European Notes were convertible into shares of Harken
common stock at an initial conversion price of $5.00 per share, subject to
adjustment in certain circumstances ("the 5 1/2% European Note Conversion
Price"). The Trust Indenture provided for a five percent premium on the number
of shares of Harken common stock issuable on conversion that was paid to
holders converting the 5 1/2% European Notes prior to December 11, 1997. The 5
1/2% European Notes were also convertible by Harken into shares of Harken
common stock after one year following issuance, if for any period of thirty
consecutive days commencing on or after June 11, 1997, the average of the
closing prices of Harken common stock for each trading day during such
thirty-day period equaled or exceeded 130% of the 5 1/2% European Note
Conversion Price (or $6.50 per share of Harken common stock). In October 1997,
Harken met the market price criteria necessary to call for mandatory conversion
of the 5 1/2% European Notes any time on or after June 11, 1998, and provided
notice to the holders as required under the Trust Indenture. Harken formally
called the 5 1/2% European Notes which remained outstanding on June 12, 1998.
As of December 31, 1997, holders of 5 1/2% European Notes totaling $30,120,000
exercised their conversion option and such holders were issued 6,325,200 shares
of Harken common stock. During the first six months of 1998 additional holders
of 5 1/2% European Notes totaling $610,000 exercised their conversion option
and such holders were issued an additional 122,000 shares of Harken common
stock. On June 12, 1998, Harken converted the remaining 5 1/2% European Notes
into 7,854,000 shares of Harken common stock.


                                      14
<PAGE>   15

         Upon closing, all proceeds from the sale of the 5 1/2% European Notes,
net of commissions and issuance costs, were each initially paid to a Trustee
under the terms of a Trust Indenture covering each issue and held in separate
interest bearing Trust accounts (the "Segregated Accounts") to be maintained
for Harken's benefit until the Trustee was presented with evidence of
sufficient asset value, as defined in the Trust Indenture, held by Harken to
permit an advance of a portion of the proceeds. Until all of the 5 1/2%
European Notes were converted, Harken was to maintain an Asset Value Coverage
Ratio as defined in the Trust Indenture. Upon the June 1998 conversion of the 5
1/2% European Notes which remained outstanding, Harken transferred the
approximately $37.6 million in the Segregated Accounts to its main operating
account.

         5% European Notes - On May 26, 1998, Harken issued to qualified
purchasers a total of $85 million in 5% Senior Convertible Notes (the "5%
European Notes") which mature on May 26, 2003. In connection with the sale and
issuance of the 5% European Notes, Harken paid approximately $4,256,000 from
the 5% European Notes proceeds for commissions and issuance costs. Interest
incurred on these notes is payable semi-annually in May and November of each
year to maturity or until the 5% European Notes are converted. Such 5% European
Notes are convertible into shares of Harken common stock at an initial
conversion price of $6.50 per share, subject to adjustment in certain
circumstances ("the 5% European Note Conversion Price"). The Trust Indenture
provided for a 3 percent premium on the number of shares of Harken common stock
issuable on conversion to holders of the 5% European Notes who converted prior
to November 25, 1998. None of the bondholders have exercised their conversion
option as of August 12, 1999. The 5% European Notes are also convertible by
Harken into shares of Harken common stock after May 26, 1999, if for any period
of thirty consecutive days commencing on or after May 26, 1998, the average of
the closing prices of Harken common stock for each trading day during such
thirty-day period shall have equaled or exceeded 125% of the 5% European Note
Conversion Price (or $8.125 per share of Harken common stock). The 5% European
Notes may be redeemed for cash, at Harken's option, at par, in whole or in
part, at any time after May 26, 2002, upon not less than 30 days notice to the
holders. In addition, beginning November 26, 2002, Harken may redeem up to 50%
of the 5% European Notes in exchange for shares of Harken common stock at a
defined conversion price based on an average market price of Harken common
stock. Beginning May 26, 2003, Harken may similarly redeem all remaining 5%
European Notes. The 5% European Notes are listed on the Luxembourg Stock
Exchange.

         Commissions and issuance costs associated with the European Notes are
deferred and are included in Other Assets and are amortized to interest expense
over the period until conversion or maturity of the European Notes. As European
Notes are converted to Harken common stock, a pro-rata portion of these
deferred costs are charged to Additional Paid-In Capital.

(8)      STOCKHOLDERS' EQUITY

         Common Stock - Harken currently has authorized 225,000,000 shares of
$.01 par common stock. At December 31, 1998 and June 30, 1999, Harken had
issued 134,778,830 shares and 145,607,549 shares, respectively.

         Treasury Stock -- At December 31, 1998 and June 30, 1999, Harken held
700,000 and 1,218,000 shares, respectively, of Harken common stock purchased in
the open market at a cost of $2,552,000 and $3,512,000, respectively.


                                      15
<PAGE>   16

         Issuance of European Convertible Notes Payable - In June 1997, Harken
issued to qualified purchasers a total of $70 million in 5 1/2% European Notes
which were to mature on June 11, 2002. As of December 31, 1997, holders of 5
1/2% European Notes totaling $30,120,000 had exercised their conversion option
and such holders were issued 6,325,200 shares of Harken common stock.
Subsequent to December 31, 1997 and as of June 11, 1998, holders of 5 1/2%
European Notes totaling an additional $610,000 exercised their conversion
option and such holders were issued 122,000 shares of Harken common stock. On
June 12, 1998, Harken formally called and converted the remaining 5 1/2%
European Notes into 7,854,000 shares of Harken common stock. In connection with
the issuance of the 5 1/2% European Notes, Harken issued to the placement
agents for the 5 1/2% European Notes warrants to purchase 1,120,000 shares of
Harken common stock at any time after December 11, 1997 and on or before
December 11, 1999 at an exercise price of $5.00 per share.

         In May 1998, Harken issued to qualified purchasers a total of $85
million in 5% European Notes which mature on May 26, 2003. Such 5% European
Notes are convertible into shares of Harken common stock at an initial
conversion price of $6.50 per share, subject to adjustment in certain
circumstances ("the 5% European Note Conversion Price"). The Trust Indenture
provided for a three percent premium on the number of shares of Harken common
stock issuable on conversion to holders of the 5% European Notes who convert
prior to November 25, 1998. None of the bondholders have exercised their
conversion option as of August , 1999. The 5% European Notes are also
convertible by Harken into shares of Harken common stock after May 26, 1999, if
for any period of thirty consecutive days commencing on or after May 26, 1998,
the average of the closing prices of Harken common stock for each trading day
during such thirty-day period shall have equaled or exceeded 125% of the 5%
European Note Conversion Price (or $8.125 per share of Harken common stock).
The 5% European Notes may be redeemed for cash, at Harken's option, at par, in
whole or in part, at any time after May 26, 2002, upon not less than 30 days
notice to the holders. In addition, beginning November 26, 2002, Harken may
redeem up to 50% of the 5% European Notes in exchange for shares of Harken
common stock at a defined conversion price based on an average market price of
Harken common stock. Beginning May 26, 2003, Harken may similarly redeem all
remaining 5% European Notes. In connection with the issuance of the 5% European
Notes, Harken issued to the placement agents for the 5% European Notes warrants
to purchase 200,000 shares of Harken common stock at any time after May 26,
1998 and on or before May 26, 2000 at an exercise price of $6.50 per share. The
5% European Notes are listed on the Luxembourg Stock Exchange.

         Acquisition of Bargo Properties - In May 1998, Harken acquired working
interests in the Bargo Properties in exchange for 2,716,483 shares issuable at
closing. Additional consideration of approximately $4,000,000 was paid by
Harken to the sellers in cash during July 1999. See Note 2 - Acquisitions for
further discussion.

         Development Finance Agreements -- Harken has entered into development
finance agreements relating to certain of its Colombian operations. Pursuant to
these development finance agreements, certain investors have the option, or
have previously exercised their options, to convert their beneficial interest
in a specific operating area into shares of Harken common stock. In addition,
certain of these investors were issued shares of Harken common stock at the
time of entering into a development finance agreement with Harken. For a
complete discussion of each of the various development finance agreements, and
further discussions of certain conversions of beneficial interests exercised in
April and May 1999, see Note 6 - Development Finance and Operating Agreements.


                                      16
<PAGE>   17

         Series F Preferred Stock - On April 9, 1998, Harken entered into a
Securities Purchase Agreement with RGC International Investors, LDC ("RGC"),
pursuant to which Harken issued to RGC 15,000 shares of its Series F
Convertible Preferred Stock (the "Series F Preferred") in exchange for
$15,000,000. The Series F Preferred was convertible into shares of Harken
common stock at a conversion price based upon the market price of Harken common
stock at the time of conversion. The number of shares of Harken common stock
issuable upon conversion of the Series F Preferred also included a premium
amount equal to an increase calculated on the face value of the Series F
Preferred at 5% per annum. Harken reflected this 5% per annum increase
throughout 1998 as accretion related to preferred stock. Such accretion amount
is reflected in Harken's calculation of net income (loss) attributable to
common stock. The Series F Preferred did not pay dividends.

         During the first six months following the issuance of the Series F
Preferred, RGC could have elected to convert the shares of the Series F
Preferred into Harken common stock on any day that the closing sales price of
the Harken common stock on the American Stock Exchange was equal to or greater
than 115% of the "Market Price." The Market Price is equal to the lower of (a)
the average of the closing bid prices of Harken common stock for any five
consecutive trading days during the 22 trading days ending one trading day
prior to the conversion date, or (b) the low closing bid price of Harken common
stock over the five trading days ending one trading day prior to the conversion
date.

         During the first nine months following the issuance of the Series F
Preferred, the conversion price was equal to 103% of the Market Price on the
conversion date. On January 9, 1999, the conversion price would be fixed at 90%
of the average of the closing bid prices of Harken common stock for the
previous 22 trading days. Beginning February 9, 1999, the conversion price was
to be fixed at 90% of the average of the closing bid prices of Harken common
stock for the previous 22 trading days if it would result in a lower conversion
price than that calculated on January 9, 1999. Any shares of Series F Preferred
outstanding on April 9, 1999, would automatically be converted into shares of
Harken common stock at the then applicable conversion price.

         Harken had the option to redeem for cash any shares of Series F
Preferred presented for conversion if (a) prior to January 9, 1999, the closing
price of Harken common stock on the conversion date was less than $4.80, or (b)
on or after January 9, 1999, the then applicable conversion price was less than
$4.80, for an amount equal to the number of shares of Harken common stock that
would otherwise be issuable upon conversion multiplied by the closing price of
Harken common stock on the conversion date.

         At each election to convert shares of Series F Preferred into Harken
common stock, RGC would have the option to purchase from Harken for cash
additional shares of Harken common stock equal to the number of shares issued
on such conversion (less any shares issued in respect of the premium amount) at
a purchase price equal to the then applicable conversion price.

         On January 5, 1999, Harken reached an agreement with RGC to extend the
fixed conversion price dates and mandatory conversion date by one year on
Harken's $15 million Series F Preferred. Under the terms of the new agreement
with RGC, Harken would have issued shares of a new Series G Convertible
Preferred Stock (the "Series G Preferred") in exchange for the outstanding
Series F Preferred. In January 1999, RGC elected to present its Series F
Preferred for conversion and Harken elected to pay cash of approximately $25.3
million to RGC in lieu of issuing shares of Harken common stock. Harken
reflected an additional amount of approximately $1,302,000 of accretion during
1998 related to Series F Preferred which represents the portion of the ultimate
redemption value generated in December 1998. Harken has


                                      17
<PAGE>   18

reflected the additional accretion amount of approximately $8,427,000 in the
calculation of net income (loss) attributed to common stock during the first
quarter of 1999 reflecting the portion of the redemption value generated in
January 1999.

         Stockholder Rights Plan - In April 1998, Harken adopted a rights
agreement (the "Rights Agreement") whereby a dividend of one preferred share
purchase right (a "Right") was paid for each outstanding share of Harken common
stock. The Rights will be exercisable only if a person acquires beneficial
ownership of 15 percent or more of Harken common stock (an "Acquiring Person"),
or commences a tender offer which would result in beneficial ownership of 15
percent or more of such stock. When they become exercisable, each Right
entitles the registered holder to purchase from Harken one one-thousandth of
one share of Series E Junior Participating Preferred Stock ("Series E Preferred
Stock"), at a price of $35.00 per one one-thousandth of a share of Series E
Preferred Stock, subject to adjustment under certain circumstances.

         Upon the occurrence of certain events specified in the Rights
Agreement, each holder of a Right (other than an Acquiring Person) will have
the right to purchase, at the Right's then current exercise price, shares of
Harken common stock having a value of twice the Right's exercise price. In
addition, if, after a person becomes an Acquiring Person, Harken is involved in
a merger or other business combination transaction with another person in which
Harken is not the surviving corporation, or under certain other circumstances,
each Right will entitle its holder to purchase, at the Right's then current
exercise price, shares of common stock of the other person having a value of
twice the Right's exercise price.

         Unless redeemed by Harken earlier, the Rights will expire on April 6,
2008. Harken will generally be entitled to redeem the Rights in whole, but not
in part, at $0.01 per Right, subject to adjustment. No Rights were exercisable
under the Rights Agreement at June 30, 1999.

          The terms of the Rights generally may be amended by Harken without
the approval of the holders of the Rights prior to the public announcement by
Harken or an Acquiring Person that a person has become an Acquiring Person.

(9)      PER SHARE DATA

         Basic earnings per common share was computed by dividing net income or
loss by the weighted average number of shares of Harken common stock
outstanding during the period. The impact of unconverted European Convertible
Notes or Development Finance Agreements was not included for the three months
and six months ended June 30, 1999 or 1998, as their effect would have been
antidilutive.

(10)     INCOME TAXES

         At June 30, 1999, Harken had available for federal United States
income tax reporting purposes, net operating loss (NOL) carryforward for
regular tax purposes of approximately $62,000,000 which expires in 1999 through
2019, alternative minimum tax NOL carryforward of approximately $49,000,000
which expires in 1999 through 2019, investment tax credit carryforward of
approximately $809,000 which expires in 1999 through 2002, statutory depletion
carryforward of approximately $2,400,000 which does not have an expiration
date, and a net capital loss carryforward of approximately $6,300,000 which
expires in 2000. Approximately $8,000,000 of the net operating loss
carryforward has been acquired with the purchase of subsidiaries and must be
used to offset future income from profitable operations within those
subsidiaries.


                                      18
<PAGE>   19

         Total deferred tax liabilities, relating primarily to property and
equipment, as of June 30, 1999 were approximately $753,000. Total deferred tax
assets, primarily related to the net operating loss carryforward, were
approximately $20,538,000 at June 30, 1999. The total net deferred tax asset is
offset by a valuation allowance of approximately $19,785,000 at June 30, 1999.

(11)     RELATED PARTY TRANSACTIONS

         Harken has on its Board of Directors a director who is also a managing
director of EnCap Investments L.C. ("EnCap"). EnCap has historically provided
financial consulting and investment banking services to Harken. In connection
with the June 1997 placement of the 5 1/2% European Notes, EnCap received as a
financial consulting fee, $466,667 in cash, and a warrant to purchase 50,000
shares of Harken common stock at any time after December 11, 1997 and on or
before December 11, 1999 at an exercise price of $5.00 per share. As described
in Note 6 Development Finance and Operating Agreements, in October 1997, Harken
entered into a Development Finance Agreement with the EnCap Investors. EnCap
serves as the general partner of three of the EnCap Investors and the Harken
director serves as a director of the fourth EnCap Investor. In connection with
the EnCap Development Finance Agreement, EnCap received an investment banking
fee of $500,000. As described in Note 2 - Acquisition, in May 1998, Harken
acquired the Bargo Properties from St. Martinville Partners, Ltd. and Bargo
Energy Company, which are affiliates of EnCap. Harken believes that the above
transactions were made at terms at least as favorable to Harken as those that
could have been secured with an unrelated party.

         During the past two years, Harken has made secured short-term loans to
certain members of Harken's Board of Directors and Management. Such notes
receivable are reflected in Harken's consolidated balance sheet at December 31,
1998 and June 30, 1999 as Related Party Notes Receivable.

(12)     SEGMENT INFORMATION

         Harken divides its operations into two operating segments, which are
managed and evaluated by Harken as separate operations. Harken's North American
operating segment currently relates to Harken's exploration, development,
production and acquisition efforts in the United States whereby production cash
flows are discovered or acquired and operated primarily through traditional
ownership of mineral interests in the various states in which it operates.
Harken's North American production is sold to established purchasers and
generally transported through an existing and well-developed pipeline
infrastructure. Harken's South American operating segment currently relates to
Harken's exploration, development, production and acquisition efforts in
Colombia and Costa Rica. South American segment production cash flows are
discovered through extensive drilling operations conducted under Association
Contract arrangements with the state-owned oil and gas companies/ministries in
the respective countries. Harken's South American operations are heavily
capital intensive in the exploration and development phases due to remote well
locations and the general need for the construction of Harken's own flowline
connections and production facilities. During the periods ended June 30, 1998
and 1999, none of Harken's South American segment operations related to Costa
Rica.

         Harken's accounting policies for each of its operating segments are
the same as those for its consolidated financial statements. There are no
intersegment sales or transfers. Revenues and expenses not directly
identifiable with either segment, such as certain general and administrative
expenses, are allocated by Harken based on various internal and external
criteria including an assessment of the relative benefit to each segment.


                                      19
<PAGE>   20

         Harken's financial information for each of its operating segments is
as follows for the periods ended June 30, 1998 and 1999:

<TABLE>
<CAPTION>
                                                      Three Months Ended June 30, 1998
                                            ------------------------------------------------
                                                 North            South
                                                America          America            Total
                                            -------------    --------------    -------------
<S>                                         <C>              <C>              <C>
Operating revenues                           $   2,500,000    $     134,000    $   2,634,000
Interest and other income                        1,190,000        1,072,000        2,262,000
Depreciation and amortization                    1,254,000           32,000        1,286,000
Interest expense and other, net (restated)         105,000          959,000        1,064,000
Income tax expense                                  46,000               --           46,000
Segment loss (restated)                           (126,000)        (486,000)        (612,000)
Capital expenditures (restated)                 21,445,000       24,556,000       46,001,000
Total assets at end of period (restated)       183,234,000      184,798,000      368,032,000

<CAPTION>
                                                      Six Months Ended June 30, 1998
                                             ------------------------------------------------
                                                 North           South
                                                America          America           Total
                                             ------------    -------------     --------------
<S>                                         <C>              <C>              <C>
Operating revenues                           $   5,200,000    $     134,000    $   5,334,000
Interest and other income                        2,024,000        1,900,000        3,924,000
Depreciation and amortization                    2,359,000           57,000        2,416,000
Interest expense and other, net (restated)         113,000        1,592,000        1,705,000
Income tax expense                                  46,000               --           46,000
Segment loss (restated)                           (309,000)        (852,000)      (1,161,000)
Capital expenditures (restated)                 22,438,000       41,158,000       63,596,000
Total assets at end of period (restated)       183,234,000      184,798,000      368,032,000
</TABLE>

<TABLE>
<CAPTION>
                                            Three Months Ended June 30, 1999                  Six Months Ended June 30, 1999
                                  ------------------------------------------------   ----------------------------------------------
                                       North            South                            North           South
                                      America          America            Total         America          America           Total
                                  -------------    --------------    -------------   ------------    -------------     ------------
<S>                               <C>              <C>              <C>             <C>              <C>              <C>
Operating revenues                $   2,899,000    $   1,211,000    $   4,110,000   $   5,301,000    $   1,889,000    $   7,190,000
Interest and other income               489,000          501,000          990,000       1,100,000        1,146,000        2,246,000
Depreciation and amortization         1,131,000          339,000        1,470,000       2,294,000          554,000        2,848,000
Interest expense and other, net         513,000        1,001,000        1,514,000         729,000        2,144,000        2,873,000
Income tax expense                           --               --               --              --               --               --
Extraordinary item                           --          589,000          589,000              --          589,000          589,000
Segment (loss)                         (929,000)      (1,866,000)      (2,795,000)     (1,372,000)      (3,071,000)      (4,443,000)
Capital expenditures                    165,000        5,901,000        6,066,000         699,000       19,842,000       20,541,000
Total assets at end of period        74,301,000      204,688,000      278,989,000      74,301,000      204,688,000      278,989,000
</TABLE>

(13)     COMMITMENTS AND CONTINGENCIES

         Operational Contingencies - The exploration, development and
production of oil and gas are subject to various Colombian, Costa Rican,
Navajo, federal and state laws and regulations designed to protect the
environment. Compliance with these regulations is part of Harken's day-to-day
operating procedures. Infrequently, accidental discharge of such materials as
oil, natural gas or drilling fluids can occur and such accidents can require
material expenditures to correct. Harken maintains levels of insurance
customary in the industry to limit its financial exposure. Management is
unaware of any material capital expenditures required for environmental control
during the next fiscal year.

         In September 1997, Harken Exploration Company, a wholly-owned
subsidiary of Harken, was served with a lawsuit filed in Amarillo, Texas in
Federal District Court for the Northern District of Texas styled D. E. Rice and
Karen Rice, as Trustees for the Rice Family Living Trust vs. Harken Exploration
Company. The Rice Family Living Trust ("Rice") is a surface landowner in
Hutchinson County, Texas. Rice has alleged that oil and saltwater spills from
Harken Exploration Company's equipment and wells have polluted and otherwise
damaged its property. Rice is seeking payment of costs to prevent, minimize and
mitigate the alleged oil pollution, costs to restore and repair the land and
vegetation, costs to decontaminate the ground and surface water, interest,
attorneys' fees, and punitive damages. Furthermore, Rice has requested that
Harken Exploration Company be enjoined from producing any oil or gas from its
lands. Rice has alleged that remediation of all of the pollution on its land
will cost approximately $40,000,000. Harken believes that this lawsuit is
wholly without merit. Harken has asserted numerous defenses, all of which
Harken believes are meritorious. Harken intends to defend itself vigorously.
The lawsuit is expected to go


                                      20
<PAGE>   21

to trial in 1999. In Harken management's opinion, the results of the lawsuit
will not have a material adverse effect on Harken's financial position.

         Harken has accrued approximately $2.4 million at June 30, 1999 relating
to certain other operational or regulatory liabilities related to Harken's North
American operations. Harken and its subsidiaries currently are involved in
various lawsuits and other contingencies, which in management's opinion, will
not result in significant loss exposure to Harken.

         Year 2000 Issues - Harken is currently working to resolve the
potential impact of the Year 2000 on the processing of date-sensitive
information by Harken's computer systems. The Year 2000 issue involves
circumstances where a computerized system may not properly recognize or process
date-sensitive information on or after January 1, 2000. The Year 2000 problem
is the result of computer programs being written using two digits, rather than
four, to define the applicable year. Any of Harken's programs that have
time-sensitive software may recognize a date using "00" as the Year 1900 rather
than the Year 2000, which could result in miscalculations or system failures.
The problem is not limited to computer systems. Year 2000 issues will also
potentially affect every non-information technology system that has an embedded
microchip, such as elevators.

         Harken began a formal process in 1998 to identify those internal
computerized systems that are not Year 2000 compliant, prioritize those
business-critical computerized systems that need remediation or replacement,
test compliance once the appropriate corrective measures have been implemented,
and develop any contingency plans where considered necessary. In addition,
Harken is continuing to conduct a survey to verify the Year 2000 readiness
status of key purchasers, vendors and customers that Harken believes could have
an impact on Harken's material business operations.

         Harken's information technology infrastructure consists of desktop
Pentium class Intel based PC systems and servers, and off-the-shelf software
packages. The systems are networked via Microsoft and other telecommunications
equipment. Harken does not use mini or mainframe computer systems and uses only
off-the-shelf software products.

         Assessment. Based on Harken's internal review and discussions with
third parties regarding the Year 2000 problem, Harken believes that its
exposure to potential Year 2000 problems exists in two general areas:
technological operations, including non-information technology systems which
are in the sole control of Harken; and technological operations which are
dependent in some way on one or more third parties. Failure to achieve high
levels of Year 2000 compliance in either area could have a material adverse
impact on Harken.

         Remediation and Implementation. In the area of technological
operations which are under Harken's exclusive control, Harken is currently
involved in the identification and remediation of affected technological
functions, including non-information technology systems. Harken has
substantially completed its assessment of Year 2000 readiness of its internal
computerized systems. Harken has installed upgrades to its off-the-shelf
financial and operational software applications, hardware and
telecommunications equipment. Harken is in the identification and assessment
phase with respect to its non-information technology systems which is projected
to continue until the end of the third quarter of 1999.

         Testing. Harken has begun updating and testing of the newly upgraded
systems for Year 2000 compliance, and expects that all testing will be
completed by the end of the third quarter of 1999. Upon

                                      21

<PAGE>   22


completion, Harken will be able to identify any internal computer systems that
remain non-compliant. At present, it is anticipated that Harken's action plan
for addressing Year 2000 problems will be successfully completed in all
material respects in advance of January 1, 2000.

         Third Parties. Harken is in the final process of assessing the level
of Year 2000 issues associated with its most significant vendors, suppliers,
partners and major customers. All of Harken's oil and gas sales revenues are
derived from oil and gas production from its North American and South American
operations. Harken's North American operations are dependent upon its various
purchasers or pipeline operators who transport oil or gas for its purchasers.
In addition, Harken's South American operations may also become dependent upon
the transportation of oil through outside owned facilities or pipelines. Harken
is monitoring progress of its various North American purchasers and pipelines,
as well as potential South American outside owned facilities on their
activities related to the Year 2000. At this time, Harken expects that field
operations will not be materially interrupted due to improper recognition of
the Year 2000 by computerized systems of its various purchasers and pipelines.

         Harken also relies on other oil and gas service providers, vendors,
and financial institutions in its daily operations. Harken believes it has
identified those third-party relationships that could have a material adverse
effect on Harken's results of operations and financial position should their
computerized systems not be compliant for the Year 2000. Harken continues with
its efforts to survey the identified third parties on their readiness for the
Year 2000 and establish appropriate alternatives, if needed, where
noncompliance may pose a risk to Harken's operations.

         Although Harken is making significant efforts to ensure that the third
parties on which it is heavily reliant are Year 2000 compliant, it cannot
predict the likelihood of such compliance occurring nor the direct or indirect
costs to Harken of non-compliance by those third parties or of securing such
services from compliant third parties. Harken has no control over these third
parties' compliance and cannot give assurances that these third parties'
representations to Harken are accurate. Therefore, there can be no guarantee
that Year 2000 problems originating with a third party will not occur and no
absolute assurance that third parties will convert their systems in a timely
manner, to the extent Harken is unable to replace the goods, services or
customers with alternate sources of supply and demand on a timely and
economically equivalent basis. Such failure could have a material adverse
effect on Harken's business and results of operations.

         Estimated Costs. The total financial effect that Year 2000 issues will
have on Harken cannot be predicted with any certainty at this time. In fact, in
spite of all efforts being made to rectify these problems, the success of
Harken's efforts will not be known with certainty until the year 2000 actually
arrives. Based on its assessment to date, Harken does not believe that the
costs to resolve any Year 2000 issues will be material. To date, Harken has
spent less than $100,000 on Year 2000 matters and it expects that the total
cost, primarily consulting fees and software purchases, will not exceed
$200,000.

         Contingency Plan. Harken has not completed its implementation and
testing of Year 2000 compliant systems. However, a reasonably likely worst case
scenario is that Harken or certain of its purchasers or other vendors fail to
correct a material Year 2000 problem, which results in an interruption of
Harken's transportation and sale of Harken's crude oil and natural gas
production sales revenues. Certain interruptions could result in a material
adverse effect on Harken's results of operations, cash flows and financial
condition. Due to the inherent uncertainties relating to the effect of the Year
2000 on Harken's operations, it is difficult to predict what impact, if any,
noncompliance with the Year 2000 issue will have on Harken's results of

                                      22

<PAGE>   23


operations, cash flows and financial condition. Based on the results of the
implementation and testing of Harken's Year 2000 affected systems and ongoing
assessment of the readiness of its vendors, suppliers, partners and major
customers, Harken has developed appropriate contingency plans that address the
most reasonably likely worst case scenarios. Harken is continuing to review and
modify such contingency plans and expects such plans to be finalized by the end
of the third quarter of 1999. A failure to address Year 2000 issues
successfully could have a material adverse effect on Harken's business,
financial condition or results of operations.

(14)     RESTATEMENT OF FINANCIAL STATEMENTS

         In August 1999, following discussions with the Securities and Exchange
Commission's accounting staff, Harken, along with its independent public
accountants, changed its accounting for certain Development Finance Agreements
to reflect amounts convertible into shares of Harken common stock as a
long-term obligation and to reflect the 15% per annum increase in amounts
convertible as interest expense in Harken's consolidated financial statements.
The restatement of Harken's consolidated financial statements had no effect on
Harken's historical revenues, gross profit, net working capital or cash flow
for any of the periods. Harken had no long-term debt compliance covenants that
were affected by the restatement. See Note 6--Development Finance and Operating
Agreements for a discussion of Harken's Development Finance Agreements and the
accounting for those agreements. Harken had previously accounted for these
transactions as conveyances of net profits interests and had recorded the sales
proceeds as deferred revenue.

         The following table summarizes certain selected financial data as of
December 31, 1998 and for the quarter and six months ended June 30, 1998, as
originally reported and as restated to reflect the revised accounting for
certain Development Finance Agreements:

<TABLE>
<CAPTION>
                                                              December 31, 1998
                                                       --------------------------------
                                                          Previously
                                                           Reported         Restated
                                                       ----------------   -------------
<S>                                                    <C>                <C>
                             Total Assets              $    304,538,000   $ 320,116,000
                             Stockholders' equity      $    179,942,000   $ 176,138,000
</TABLE>

<TABLE>
<CAPTION>
                                        Quarter Ended June 30, 1998  Six Months Ended June 30, 1998
                                        ---------------------------  ------------------------------
                                         Previously                     Previously
                                          Reported       Restated        Reported       Restated
                                        ------------   ------------    ------------   ------------
<S>                                     <C>            <C>             <C>            <C>
        Revenues:
           Oil and gas operations       $  2,634,000   $  2,634,000    $  5,334,000   $  5,334,000
           Interest and other income       2,262,000      2,262,000       3,924,000      3,924,000
                                        ------------   ------------    ------------   ------------
                                           4,896,000      4,896,000       9,258,000      9,258,000
        Costs and Expenses:
           Oil and gas operating
           expenses                        1,346,000      1,346,000       2,728,000      2,728,000
           General and administrative
             Expenses, net                 1,766,000      1,766,000       3,524,000      3,524,000
           Depreciation and
           amortization                    1,286,000      1,286,000       2,416,000      2,416,000
           Interest expense and
           other, net                        208,000      1,064,000         216,000      1,705,000
                                        ------------   ------------    ------------   ------------
                                           4,606,000      5,462,000       8,884,000     10,373,000
        Income tax expense                    46,000         46,000          46,000         46,000
                                        ------------   ------------    ------------   ------------
        Net income (loss)               $    244,000   $   (612,000)   $    328,000   $ (1,161,000)
                                        ============   ============    ============   ============
        Net income (loss) attributed
           to common stock              $     75,000   $   (781,000)   $    159,000   $ (1,330,000)
                                        ============   ============    ============   ============
        Basic and diluted net income
            (loss) per common share     $       0.00   $      (0.01)   $       0.00   $      (0.01)
</TABLE>

                                      23

<PAGE>   24


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

         Certain statements included in the accompanying condensed financial
statements and in the following discussion and analysis of financial condition
and results of operations, including statements of Harken management's current
expectations, intentions, plans and beliefs, and statements containing the
words "believes", "anticipates", "estimates", "expects", or "may" are
forward-looking statements, as defined in Section 21D of the Securities
Exchange Act of 1934. Such forward-looking statements involve known and unknown
risk, uncertainties and other factors which may cause the actual results,
performance, timing or achievements of Harken to be materially different from
any results, performance, timing or achievements expressed or implied by such
forward-looking statements. Such factors include, among others, the risks
described in Harken's Annual Report on Form 10-K/A for the fiscal year ended
December 31, 1998 filed with the Securities and Exchange Commission.

OVERVIEW

         Harken reported a net loss for the six months ended June 30, 1999 of
$4.4 million compared to a net loss of $1.2 million for the prior year period.
Total oil and gas operating revenues increased from approximately $5.3 million
during the first six months of 1998 to approximately $7.2 million for the first
six months of 1999, primarily due to increased oil and gas operating revenue
from Harken's Colombian operations. Gross profit before depreciation and
amortization, general and administrative and interest expenses totaled
approximately $4.0 million during the six months ended June 30, 1999 compared
to approximately $2.6 million for the prior year period.

                                      24

<PAGE>   25


                             RESULTS OF OPERATIONS

         The following is management's discussion and analysis of certain
significant factors which have affected Harken's earnings and balance sheet
during the periods included in the accompanying consolidated financial
statements.

<TABLE>
<CAPTION>
                                                        Three Months Ended June 30,    Six Months Ended June 30,
                                                        ---------------------------    -------------------------
                                                            1998           1999           1998           1999
                                                        ------------    -----------    ----------     ----------

<S>                                                      <C>            <C>            <C>            <C>
North American Exploration and Production Operations
- ----------------------------------------------------
 Oil sales revenues                                      $1,346,000     $1,733,000     $2,725,000     $3,083,000
  Oil volumes in barrels                                    106,000        110,000        201,000        231,000
  Oil price per barrel                                   $    12.70     $    15.75     $    13.56     $    13.35
 Gas sales revenues                                      $1,051,000     $1,033,000     $2,240,000     $2,012,000
  Gas volumes in mcf                                        469,000        550,000        971,000      1,120,000
  Gas price per mcf                                      $     2.24     $     1.88     $     2.31     $     1.80
 Gas plant revenues                                      $  103,000     $  133,000     $  235,000     $  206,000

South American Exploration and Production Operations
- ----------------------------------------------------
 Oil sales revenues                                      $  134,000     $1,211,000     $  134,000     $1,889,000
  Oil volumes in barrels                                     14,000        104,000         14,000        181,000
  Oil price per barrel                                   $     9.57     $    11.64     $     9.57     $    10.44

Other Revenues
- --------------
 Interest income                                         $2,133,000     $  980,000     $3,789,000     $2,228,000
 Other income                                            $  129,000     $   10,000     $  135,000     $   18,000
</TABLE>

For the quarter ended June 30, 1999 compared with the corresponding prior
period.

NORTH AMERICAN OPERATIONS

         North American gross oil and gas revenues during the second quarter of
1999 and 1998 relate primarily to the operations in the Four Corners area of
Utah, Arizona and New Mexico primarily on the Navajo Indian reservation (the
"Four Corners Properties"), onshore South Texas, the Western and Panhandle
regions of Texas, the Magnolia region of Arkansas, the Carlsbad region of New
Mexico, and beginning in May 1998, the southern region of Louisiana.

         Gross North American oil revenues increased 29% to $1,733,000 during
the second quarter of 1999 compared to $1,346,000 during the second quarter of
1998 primarily due to the increase in oil prices, which averaged $3.05 higher
per barrel during the second quarter of 1999 compared to the prior year period.
Oil production volumes increased 4% during the second quarter of 1999 compared
to the prior year period primarily due to the acquisition of the Bargo
Properties in May 1998.

         Gross North American gas revenues decreased 2% to $1,033,000 for the
quarter ended June 30, 1999 compared to $1,051,000 for the prior year period due
to the decrease in average gas prices received during the second quarter of
1999, as Harken received an overall average price of $1.88 per mcf of gas
production during the second quarter of 1999 compared to $2.24 per mcf received
during the second quarter of 1998. North American gas production increased 17%
during the second quarter of 1999 compared to the prior year period as Harken
reflected production from new wells that were completed in the Gulf Coast area
in late

                                       25

<PAGE>   26


1998, and also due to curtailment of gas production from certain Texas Panhandle
properties during the first quarter of 1998.

         North American oil and gas operating expenses consist of lease
operating expenses and gas plant expenses, along with a number of production and
reserve based taxes, including severance taxes, property taxes, Utah
conservation taxes and Navajo severance and possessory interest taxes. North
American oil and gas operating expenses increased during the second quarter of
1999 compared to the same prior year period due to the above mentioned
acquisition of the Bargo Properties.

SOUTH AMERICAN OPERATIONS

         During the second quarter of 1999, Harken's South American production
operations consisted of production testing conducted on Harken's Bolivar and
Alcaravan Association Contract areas in Colombia. All of Harken's South American
production through the first quarter of 1999 was transported by trucking
operations, however, in April 1999, Harken commenced pipeline transportation on
the Alcaravan Association Contract area through its newly completed Palo Blanco
flowline. During the second quarter of 1999, production from Harken's Estero #1
well on the Alcaravan Contract area has averaged 748 gross barrels of oil per
day, and Harken's Catalina #1 and Olivo #1 wells on the Bolivar Contract area
have averaged a combined 2,147 gross barrels of oil per day. Harken's South
American production and revenues are expected to increase during the remainder
of 1999 as Alcaravan and Bolivar Contract area production increases. South
American oil revenues increased from $134,000 for the second quarter of 1998 to
$1,211,000 for the same quarter in 1999. The higher revenues are the result of
increased production testing volumes on the Bolivar Contract area coupled with
sales of production in the Alcaravan Contract area, which did not begin
production until September 1998. All of Harken's South American revenues have
come from its Colombian operations.

INTEREST AND OTHER INCOME

         Interest and other income decreased during the second quarter of 1999
compared to the prior year period due to a portion of Harken's invested cash
being utilized for Colombian capital expenditures and for the January 1999
redemption of the Series F Preferred for approximately $25.3 million. Harken
generated approximately $2.1 million of interest income during the second
quarter of 1998, compared to approximately $980,000 of interest income during
the second quarter of 1999. Harken's cash balances, which include investments in
short-term marketable debt securities, are expected to continue to decrease in
1999 as such funds are used to support Harken's capital expenditure plans,
although Harken continues to pursue financing arrangements for its Bolivar
flowline facility project during 1999 and the decrease in existing cash balances
and related interest income could be mitigated or offset if such efforts are
successful.

OTHER COSTS AND EXPENSES

         General and administrative expenses increased $812,000 during the
second quarter of 1999 compared to the second quarter of 1998, primarily due to
Harken's May 1999 relocation of its corporate headquarters location to Houston,
Texas, which resulted in employee severance and relocation expenses in addition
to the physical moving costs to relocate its offices. The relocation allowed
Harken to consolidate its corporate offices with existing Houston office
personnel, thereby gaining additional administrative efficiencies in the future.
Harken also has taken steps during the last half of 1998 and first half of 1999
to reduce general and administrative expenses by reducing staff.

                                       26

<PAGE>   27


         Depreciation and amortization expense increased during the second
quarter of 1999 compared to the prior year period consistent with the increased
equivalent barrel production levels during the quarter. Depreciation and
amortization on oil and gas properties is calculated on a unit of production
basis in accordance with the full cost method of accounting for oil and gas
properties. In addition, Harken's depreciation on other property has increased
as a result of Harken's expanding operations.

         Interest expense and other increased during the second quarter of 1999
compared to the prior year period primarily due to the interest on the 5%
European notes, which were issued in May 1998.

         An extraordinary charge of $589,000 was recognized in the second
quarter of 1999 for the pro rata share of unamortized Development Finance
Agreement issuance costs associated with the conversions by the EnCap Investors,
the European Investors, and Faisal of their applicable Development Finance
Agreement participation into shares of Harken common stock.

For the six months ended June 30, 1999 compared with the corresponding prior
period.

NORTH AMERICAN OPERATIONS

         Gross North American oil revenues increased $358,000 to $3,083,000
during the first six months of 1999 compared to $2,725,000 for the same period
in 1998. Most of the increase resulted from the above mentioned acquisition of
the Bargo properties in May 1998.

         Gross gas revenues decreased 10% from $2,240,000 for the first six
months of 1998 to $2,012,000 for the same period in 1999, primarily due to the
decrease in average gas prices received during the first six months of 1999.
Harken received an overall average price of $1.80 per mcf of gas production
during the first six months of 1999 compared to $2.31 per mcf received during
the same period in 1998. North American gas production increased 15% during the
first six months of 1999 compared to the prior year period, as Harken reflected
production from new wells that were completed in the Gulf coast area in late
1998, and also due to curtailment of gas production from certain Texas Panhandle
properties during the first quarter of 1998.

         North American oil and gas operating expenses held constant for the
first six months of 1999 compared to the same period in 1998. Increases from the
above mentioned acquisition of the Bargo Properties were offset by efforts to
reduce operating expenses.

SOUTH AMERICAN OPERATIONS

         Harken's South American oil sales increased from $134,000 during the
first six months of 1998 to $1,889,000 for the first six months of 1999. Most of
the increase came from higher production volumes generated from production
testing on the Bolivar Association Contract area, coupled with increased sales
on the Alcaravan Association Contract area properties due to the ability to flow
oil through the Palo Blanco flowline discussed above. All of Harken's South
American revenues have come from its Colombian operations.

                                       27

<PAGE>   28


INTEREST AND OTHER INCOME

         Interest and other income decreased $1,678,000 from $3,924,000 during
the first six months of 1998 to $2,246,000 for the same six month period in
1999. Harken's cash balances, which include investments in short-term marketable
debt securities, are expected to continue to decrease in 1999 as such funds are
used to support Harken's capital expenditure plans. However, Harken continues to
pursue financing arrangements for its Bolivar flowline facility project during
1999 and the decrease in existing cash balances and related interest income
could be mitigated or offset if such efforts are successful.

OTHER COSTS AND EXPENSES

         General and administrative expenses increased $843,000 during the first
six months of 1999 compared to the same period in 1998, primarily due to
Harken's May 1999 relocation of its corporate headquarters location to Houston,
Texas, which resulted in employee severance and relocation expenses in addition
to the physical moving costs to relocate its offices. The relocation allowed
Harken to consolidate its corporate offices with existing Houston office
personnel, thereby gaining additional administrative efficiencies in the future.
Harken also has taken steps during the last half of 1998 and first half of 1999
to reduce general and general and administrative expenses by reducing staff.

         Depreciation and amortization expense increased during the first six
months of 1999 compared to the prior year period consistent with the increased
equivalent barrel production levels during the first six months. Depreciation
and amortization on oil and gas properties is calculated on a unit of production
basis in accordance with the full cost method of accounting for oil and gas
properties. In addition, Harken's depreciation on other property has increased
as a result of Harken's expanding operations.

         Interest expense and other increased during the first six months of
1999 compared to the prior year period primarily due to the interest on the 5%
European Notes, which were issued in May 1998.

         An extraordinary charge of $589,000 was recognized in the second
quarter of 1999 for the pro rata share of unamortized Development Finance
Agreement issuance costs associated with the conversions by the EnCap Investors,
the European Investors, and Faisal of their applicable Development Finance
Agreement participation into shares of Harken common stock.


                         LIQUIDITY AND CAPITAL RESOURCES

         Harken's working capital at June 30, 1999 was approximately $71.2
million, versus approximately $123.7 million at December 31, 1998. The decrease
in cash and working capital resulted primarily from approximately $22.1 million
of capital expenditures, which include a portion of the drilling costs of the
Islero #1 well during the first six months of 1999, and from the January
redemption of the Series F Preferred for approximately $25.3 million. In
addition, Harken's operations required approximately $15.2 million of cash flow
during the first six months of 1999, primarily due to the payment of accounts
payable at December 31, 1998 related to Harken's exploration activities.
Harken's cash resources at June 30, 1999 totaled approximately $78.0 million and
are available for its ongoing exploration, development and acquisition efforts
both internationally and in North America. In addition, Harken's Board of
Directors has approved the purchase of up to 10 million shares of its
outstanding Harken common stock through December 31, 1999.

                                       28

<PAGE>   29


         Harken's primary need for capital is to fund the planned exploration
and development efforts in Colombia and Costa Rica. Harken's 1998 South American
capital expenditures totaled approximately $84 million and Harken anticipates
that its 1999 South American capital expenditures will total in excess of $50
million, primarily related to the Bolivar Contract area. Harken believes that it
will have sufficient cash resources to fund all of its planned capital
expenditures for 1999, however, Harken plans to obtain additional resources
through project debt financing related to the development of the Bolivar
Contract area. In addition, Harken intends to continue to pursue North American
and international acquisition opportunities. Harken intends to fund such
acquisitions, if any are consummated, through a combination of cash on hand,
issuances of debt or equity securities.

         Harken anticipates that full development of its South American reserves
will take several years and will also require extensive production facilities,
transportation flowlines and development activity which will require significant
additional capital expenditures. The ultimate amount of such expenditures cannot
be presently predicted.

         The current plans for the development of the Bolivar Contract area call
for a number of wells to be drilled over the next three years. As a part of this
process, Harken is currently in discussions with sources of project finance to
provide debt funding for the development of the area. Such a credit facility
could enable Harken to accelerate its development of the field while still
preserving its working capital position for its exploration efforts. As a part
of this financing plan, and in order to include Ecopetrol in the future planning
process, Harken has decided to reevaluate its drilling schedule in anticipation
of obtaining long-term financing. In March 1999, Harken de Colombia, Ltd. filed
a request with Ecopetrol to declare the Catalina field to be commercial. As of
August 12, 1999, the commerciality application is in process of being reviewed
by Ecopetrol. Ecopetrol may approve the commerciality request or require Harken
de Colombia, Ltd. to proceed on a sole-risk basis for its development plans. If
Harken de Colombia, Ltd. proceeds on a sole-risk basis, it will be entitled to
receive Ecopetrol's share of production after royalty, until Harken de Colombia,
Ltd. has recovered 200% of its development costs, after which time Ecopetrol
would receive its share of production.

         Terms of each of the Association Contracts entered into between Harken
de Colombia, Ltd. and Ecopetrol commit Harken to perform certain activities in
Colombia in accordance with a prescribed timetable. Failure by Harken to perform
these activities as required could result in Harken losing its rights under the
particular Association Contract, which could potentially have a material adverse
effect on Harken's business. Certain of the required activities are currently
being discussed and negotiated with Ecopetrol, which could impact the timing and
amount of capital expenditures to be required during 1999. However, as mentioned
above, Harken has sufficient cash resources to fund all of its required capital
expenditure requirements during 1999.

         Related to Harken's Costa Rica operations, under the terms of the
agreement between Harken and MKJ Xploration, Inc. ("MKJ"), Harken will pay $4.2
million to MKJ to purchase its share of the Costa Rica Contract rights from MKJ
once an agreement is signed with the Costa Rican Ministry of Environment and
Energy and the assignment of the contract between MKJ and Harken is approved by
the Costa Rica Ministry of Environment and Energy. Additionally, Harken is
committed to contribute an additional $8 million to fund the work program
obligations and maintain its 80% ownership under the proposed Costa Rica
Contract agreement.

                                       29

<PAGE>   30


         Harken's North American operating strategy includes efforts to acquire
additional oil and gas reserves through drilling activities in North America and
through acquisitions. Harken plans to continue selected development of proved
undeveloped reserves on its North American properties in addition to a continual
workover program on producing properties. The targeted results of these efforts
are to maintain North American production levels during 1999 and 2000.

         European Convertible Notes Payable -- On May 26, 1998, Harken issued a
total of $85 million in 5% Senior Convertible Notes (the "European Notes") which
mature on May 26, 2003. In connection with the sale and issuance of the 5%
European Notes, Harken paid approximately $4,256,000 from the 5% European Notes
proceeds for commission and issuance costs. Interest incurred on these notes is
payable semi-annually in May and November of each year to maturity or until the
5% European Notes are converted. Such European Notes are convertible into shares
of Harken common stock at a conversion price of $6.50 per share, subject to
adjustment in certain circumstances. Harken also has the right to require
conversion of the 5% European Notes into shares of Harken common stock at any
time on or after May 26, 1999, if for any period of thirty consecutive days
commencing on or after May 26, 1998, the average of the closing prices of Harken
common stock for each trading day during such thirty-day period shall have
equaled or exceeded $8.125 per share. Interest payments related to the 5%
European Notes will be funded from cash flow from operations or existing cash
balances. For a detailed discussion of the 5% European Notes see "Notes to
Consolidated Condensed Financial Statements, Note 7 -- European Convertible
Notes Payable."

         Development Finance Agreements -- In October 1997, December 1997 and
March 1998, Harken entered into separate Development Finance Agreements with
institutional investors (collectively the "Institutional Investors") pursuant to
which the Institutional Investors provided approximately $34.5 million (the
"Payment Amount") of net proceeds to Harken to finance the drilling of the
initial wells on three unexplored oil and gas prospects in the Middle Magdalena
Basin of Colombia. Approximately $24.5 million of net proceeds were received in
October 1997 from a related party and approximately $10 million of net proceeds
were received during the first quarter of 1998. In exchange, the Institutional
Investors obtained the right to receive future payments from Harken equal to 7%
of the net profits that Harken de Colombia, Ltd. may derive from the sale of oil
and gas produced from each of the three prospects if the planned drilling on the
prospect is successful (the "Institutional Participation"). Pursuant to the
Development Finance Agreements, Harken is obligated to drill each of the three
wells prior to October 2000. Harken has satisfied the first well obligation
pursuant to the Development Finance Agreements with the drilling of the Islero
#1 well on the Cambulos Contract area. For a detailed discussion of the terms
and accounting for the Development Finance Agreements, see "Notes to
Consolidated Condensed Financial Statements, Note 6 -Development Finance and
Operating Agreements." For a discussion of the relationship between Harken and
one of the Institutional Investors, see "Notes to Consolidated Condensed
Financial Statements, Note 11 - Related Party Transactions."

         Pursuant to the Development Finance Agreements, the Institutional
Investors have the right, for a period of two years beginning in October 1998,
to convert all or part of the Institutional Participation into shares of Harken
common stock. The number of shares of Harken common stock to be issued upon
conversion of the Institutional Participation will be equal to the quotient of
(i) the Payment Amount (less any distributions made in respect of the
Institutional Participation) plus an amount equal to 15% interest per annum on
the net Payment Amount compounded monthly (the "Invested Amount"), divided by
(ii) the market price of the Harken common stock at the time of conversion.
During the same two year period, Harken also has the right to convert the
Institutional Participation into shares of Harken common stock with the number
of shares of Harken common stock to be issued to be equal to the quotient of (i)
the Payment

                                       30

<PAGE>   31


Amount (less any distribution made in respect of the Institutional
Participation) plus an amount equal to 25% interest per annum on the net Payment
Amount compounded monthly, divided by (ii) the market price of Harken common
stock at the time of conversion. Harken can also elect to pay cash upon any
conversion of the Institutional Participation in lieu of issuing Harken common
stock. The Development Finance Agreements also provide for additional shares of
Harken common stock to be issued by Harken in the event of a conversion to the
extent that the Institutional Investors do not, under certain circumstances,
realize the Invested Amount from the sale of shares of Harken common stock
issued at the conversion.

         In December 1998, one of the Institutional Investors exercised their
right to convert all their Institutional Participation into shares of Harken
common stock. Harken elected to pay cash of approximately $2.3 million in lieu
of issuing Harken common stock. In April and May 1999, certain of the
Institutional Investors exercised their right to convert a certain portion of
their Institutional Participation into shares of Harken common stock. See "Notes
to Consolidated Condensed Financial Statements, Note 6 -- Development Finance
and Operating Agreements" for further discussion.

         At the present time, it is not known whether the remaining
Institutional Investors or Harken will exercise their rights to convert the
remaining Institutional Participation into Harken common stock, nor can Harken
determine the number of shares of Harken common stock which would be required to
be issued in the event that Harken or the remaining Institutional Investors
elect to convert the Institutional Participation into shares of Harken common
stock.

         Operational Contingencies -- The exploration, development and
production of oil and gas are subject to various Colombian, Costa Rican, Navajo,
federal, state and local laws and regulations designed to protect the
environment. Compliance with these regulations is part of Harken's day-to-day
operating procedures. Accidental discharge of such materials as oil, natural gas
or drilling fluids can occur and such accidents can require material
expenditures to correct. Harken maintains levels of insurance customary in the
industry to limit its financial exposure. Management is unaware of any material
capital expenditures required for environmental control during the next fiscal
year.

         Harken has accrued approximately $2.4 million at June 30, 1999 relating
to operational or regulatory liabilities related to Harken's North American
operations. Harken and its subsidiaries currently are involved in various
lawsuits and other contingencies, which in management's opinion, will not result
in significant loss exposure to Harken.

         Year 2000 Issues -- Harken is currently working to resolve the
potential impact of the Year 2000 on the processing of date-sensitive
information by Harken's computer systems. The Year 2000 issue involves
circumstances where a computerized system may not properly recognize or process
date-sensitive information on or after January 1, 2000. The Year 2000 problem is
the result of computer programs being written using two digits, rather than
four, to define the applicable year. Any of Harken's programs that have
time-sensitive software may recognize a date using "00" as the Year 1900 rather
than the Year 2000, which could result in miscalculations or system failures.
The problem is not limited to computer systems. Year 2000 issues will also
potentially affect every non-information technology system that has an embedded
microchip, such as elevators.

         Harken began a formal process in 1998 to identify those internal
computerized systems that are not Year 2000 compliant, prioritize those
business-critical computerized systems that need remediation or replacement,
test compliance once the appropriate corrective measures have been implemented,
and develop

                                       31

<PAGE>   32


any contingency plans where considered necessary. In addition, Harken is
continuing to conduct a survey to verify the Year 2000 readiness status of key
purchasers, vendors and customers that Harken believes could have an impact on
Harken's material business operations.

         Harken's information technology infrastructure consists of desktop
Pentium class Intel based PC systems and servers and off-the-shelf software
packages. The systems are networked via Microsoft and other telecommunications
equipment. Harken does not use mini or mainframe computer systems and uses only
off-the-shelf software products.

         Assessment. Based on Harken's internal review and discussions with
third parties regarding the Year 2000 problem, Harken believes that its exposure
to potential Year 2000 problems exists in two general areas: technological
operations, including non-information technology systems, which are in the sole
control of Harken; and technological operations which are dependent in some way
on one or more third parties. Failure to achieve high levels of Year 2000
compliance in either area could have a material adverse impact on Harken.

         Remediation and Implementation. In the area of technological operations
which are under Harken's exclusive control, Harken is currently involved in the
identification and remediation of affected technological functions, including
non-information technology systems. Harken has substantially completed its
assessment of Year 2000 readiness of its internal computerized systems. Harken
has installed upgrades to its off-the-shelf financial and operational software
applications, hardware and telecommunications equipment. Harken is in the
identification and assessment phase with respect to its non-information
technology systems, which is projected to continue until the end of the third
quarter of 1999.

         Testing. Harken has begun updating and testing of the newly upgraded
systems for Year 2000 compliance, and expects that all testing will be completed
by the end of the third quarter of 1999. Upon completion, Harken will be able to
identify any internal computer systems that remain non-compliant. At present, it
is anticipated that Harken's action plan for addressing Year 2000 problems will
be successfully completed in all material respects in advance of January 1,
2000.

         Third Parties. Harken is in the final process of assessing the level of
Year 2000 issues associated with its most significant vendors, suppliers,
partners and major customers. All of Harken's oil and gas sales revenues are
derived from oil and gas production from its North American and South American
operations. Harken's North American operations are dependent upon its various
purchasers or pipeline operators who transport oil or gas for its purchasers. In
addition, Harken's South American operations may also become dependent upon the
transportation of oil through outside owned facilities or pipelines. Harken is
monitoring progress of its various North American purchasers and pipelines, as
well as potential South American outside owned facilities on their activities
related to the Year 2000. At this time, Harken expects that field operations
will not be materially interrupted due to improper recognition of the Year 2000
by computerized systems of its various purchasers and pipelines.

         Harken also relies on other oil and gas service providers, vendors, and
financial institutions in its daily operations. Harken believes it has
identified those third-party relationships that could have a material adverse
effect on Harken's results of operations and financial position should their
computerized systems not be compliant for the Year 2000. Harken continues with
its efforts to survey the identified third parties on their readiness for the
Year 2000 and establish appropriate alternatives, if needed, where noncompliance
may pose a risk to Harken's operations.

                                       32

<PAGE>   33


         Although Harken is making significant efforts to ensure that the third
parties on which it is heavily reliant are Year 2000 compliant, it cannot
predict the likelihood of such compliance occurring nor the direct or indirect
costs to Harken of non-compliance by those third parties or of securing such
services from compliant third parties. Harken has no control over these third
parties' compliance and cannot give assurances that these third parties'
representations to Harken are accurate. Therefore, there can be no guarantee
that Year 2000 problems originating with a third party will not occur and no
absolute assurance that third parties will convert their systems in a timely
manner, to the extent Harken is unable to replace the goods, services or
customers with alternate sources of supply and demand on a timely and
economically equivalent basis. Such failure could have a material adverse effect
on Harken's business and results of operations.

         Estimated Costs. The total financial effect that Year 2000 issues will
have on Harken cannot be predicted with any certainty at this time. In fact, in
spite of all efforts being made to rectify these problems, the success of
Harken's efforts will not be known with certainty until the year 2000 actually
arrives. Based on its assessment to date, Harken does not believe that the costs
to resolve any Year 2000 issues will be material. To date, Harken has spent less
than $100,000 on Year 2000 matters and it expects that the total cost, primarily
consulting fees and software purchases, will not exceed $200,000.

         Contingency Plan. Harken has not completed its implementation and
testing of Year 2000 compliant systems. However, a reasonably likely worst case
scenario is that Harken or certain of its purchasers or other vendors fail to
correct a material Year 2000 problem, which results in an interruption of
Harken's transportation and sale of Harken's crude oil and natural gas
production sales revenues. Certain interruptions could result in a material
adverse effect on Harken's results of operations, cash flows and financial
condition. Due to the inherent uncertainties relating to the effect of the Year
2000 on Harken's operations, it is difficult to predict what impact, if any,
noncompliance with the Year 2000 issue will have on Harken's results of
operations, cash flows and financial condition. Based on the results of the
implementation and testing of Harken's Year 2000 affected systems and ongoing
assessment of the readiness of its vendors, suppliers, partners and major
customers, Harken has developed appropriate contingency plans that address the
most reasonably likely worst case scenarios. Harken is continuing to review and
modify such contingency plans and expects such plans to be finalized by the end
of the third quarter of 1999. A failure to address Year 2000 issues successfully
could have a material adverse effect on Harken's business, financial condition
or results of operations.

                                       33

<PAGE>   34


                           PART II - OTHER INFORMATION

Item 1.  Legal Proceedings.

         In September 1997, Harken Exploration Company, a wholly-owned
         subsidiary of Harken, was served with a lawsuit filed in Amarillo,
         Texas in Federal District court for the Northern district of Texas
         styled D. E. Rice and Karen Rice, as Trustees for the Rice Family
         Living Trust vs. Harken Exploration Company. The Rice Family Living
         Trust ("Rice") is a surface landowner in Hutchinson County, Texas.
         Rice has alleged that oil and saltwater spills from Harken Exploration
         Company's equipment and wells have polluted and otherwise damaged its
         property. Rice is seeking payment of costs to prevent, minimize and
         mitigate the alleged oil pollution, costs to restore and repair the
         land and vegetation, costs to decontaminate the ground and surface
         water, interest, attorney's fees, and punitive damages. Furthermore,
         Rice has requested that Harken Exploration Company be enjoined from
         producing any oil or gas from its lands. Rice has alleged that
         remediation of all of the pollution on its land will cost
         approximately $40,000,000. Harken believes that this lawsuit is wholly
         without merit. Harken has asserted numerous defenses, all of which
         Harken believes are meritorious. Harken intends to defend itself
         vigorously. The lawsuit is expected to go to trial in 1999. In Harken
         management's opinion, the results of the lawsuit will not have a
         material adverse effect on Harken's financial position.

         Harken and its subsidiaries currently are involved in various other
         lawsuits and other contingencies, which in management's opinion, will
         not have a material adverse effect on Harken's financial position.

Item 2.  Changes in Securities.
         Not applicable.

Item 3.  Default Upon Senior Securities.
         Not applicable.

Item 4.  Submission of Matters to a Vote of Securities Holders.
         On June 22, 1999, Harken held its Annual Meeting of Stockholders. At
         the Annual Meeting, the stockholders cast their votes as follows:

                  Election of Donald W. Raymond, Richard H. Schroeder, Stephen
                  C. Voss and Gary B. Wood, Ph.D. to serve as Class C Directors:

<TABLE>
<CAPTION>
                            For          Vote Withheld
                         -----------     -------------

<S>                      <C>               <C>
Donald W. Raymond        116,541,935       5,141,024
Richard H. Schroeder     115,749,907       5,933,052
Stephen C. Voss          115,726,911       5,956,048
Gary B. Wood, Ph.D       116,608,153       5,074,806
</TABLE>

Item 5.  Other Information.
         Not applicable.

                                       34

<PAGE>   35


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

         (a)      EXHIBIT INDEX
                  Exhibit

                  3.1      Certificate of Incorporation of Harken Energy
                           Corporation as amended (filed as Exhibit 3.1 to
                           Harken's Annual Report on Form 10-K for fiscal year
                           ended December 31,1989, File No. 0-9207, and
                           incorporated by reference herein).

                  3.2      Amendment to the Certificate of Incorporation of
                           Harken Energy Corporation (filed as Exhibit 28.8 to
                           the Registration Statement on Form S-1 of Tejas
                           Power Corporation, file No. 33-37141, and
                           incorporated by reference herein.)

                  3.3      Amendment to the Certificate of Incorporation of
                           Harken Energy Corporation (filed as Exhibit 3 to
                           Harken's Quarterly Report on Form 10-Q for fiscal
                           quarter ended June 30, 1991, File No. 0-9207, and
                           incorporated by reference herein.)

                  3.4      Amendments to the Certificate of Incorporation of
                           Harken Energy Corporation (filed as Exhibit 3 to
                           Harken's Quarterly Report on Form 10-Q for fiscal
                           quarter ended June 30, 1991, File No. 0-9207, and
                           incorporated by reference herein.)

                  3.5      Amendments to the Certificate of Incorporation of
                           Harken Energy Corporation (filed as Exhibit 3.5 to
                           Harken's Annual Report on Form 10-K for the fiscal
                           year ended December 31, 1996, File No. 0-9207, and
                           incorporated herein by reference).

                  3.6      Amendment to the Certificate of Incorporation of
                           Harken Energy Corporation (filed as Exhibit 3.6 to
                           Harken's Annual Report on Form 10-K for the fiscal
                           year ended December 31, 1997, File No. 0-9207, and
                           incorporated by reference herein).

                  3.7      Amendment to the Certificate of Incorporation of
                           Harken Energy Corporation (filed as Exhibit 3.6 to
                           Harken's Quarterly Report on Form 10-K for the fiscal
                           quarter ended June 30, 1998, File No. 0-9207, and
                           incorporated by reference herein).

                  3.8      Bylaws of Harken Energy Corporation, as amended
                           (filed as Exhibit 3.2 to Harken's Annual Report on
                           Form 10-K for fiscal year ended December 31, 1989,
                           File No. 0-9207, and incorporated by reference
                           herein).

                  4.1      Form of certificate representing shares of Harken
                           common stock, par value $.01 per share (filed as
                           Exhibit 1 to Harken's Registration Statement on Form
                           8-A, File No. 0-9027, and incorporated by reference
                           herein.)

                  4.2      Certificate of Designations, Powers, Preferences and
                           Rights of Series A Cumulative Convertible Preferred
                           Stock, $1.00 par value, of Harken Energy Corporation
                           (filed as Exhibit 4.1 to Harken's Annual Report on
                           Form 10-K for the fiscal year ended December 31,
                           1989, File No. 0-9207, and incorporated by reference
                           herein).

                  4.3      Certificate of Designations, Powers, Preferences and
                           Rights of Series B Cumulative Convertible Preferred
                           Stock, $1.00 par value, of Harken Energy Corporation
                           (filed

                                       35

<PAGE>   36


                           as Exhibit 4.2 to Harken's Annual Report on Form 10-K
                           for the fiscal year ended December 31, 1989, File No.
                           0-9207, and incorporated by reference herein).

                  4.4      Certificate of the Designations, Powers, Preferences
                           and Rights of Series C Cumulative Convertible
                           Preferred Stock, $1.00 par value of Harken Energy
                           Corporation (filed as Exhibit 4.3 to Harken's Annual
                           Report on Form 10-K for fiscal year ended December
                           31, 1989, File No. 0-9207, and incorporated by
                           reference herein).

                  4.5      Certificate of the Designations of Series D
                           Preferred Stock, $1.00 par value of Harken Energy
                           Corporation (filed as Exhibit 4.3 to Harken's
                           Quarterly Report on Form 10-Q for the fiscal quarter
                           ended September 30, 1995, File No. 0-9207, and
                           incorporated by reference herein).

                  4.6      Rights Agreement, dated as of April 6, 1998, by and
                           between Harken Energy Corporation And ChaseMellon
                           Shareholder Services L.L.C., as Rights Agent (filed
                           as Exhibit 4 to Harken's Current Report on Form 8-K
                           dated April 7, 1998, file No. 0-9207, and
                           incorporated by reference herein).

                  4.7      Certificate of Designations of Series E Junior
                           Participating Preferred Stock (filed as Exhibit B to
                           Exhibit 4 to Harken's Current Report on Form 8-K
                           dated April 7, 1998, file No. 0-9207, and
                           incorporated by reference herein).

                  4.8      Certificate of Designations, Preferences and Rights
                           of Series F Convertible Preferred Stock (filed as
                           Exhibit 4.8 to Harken's Quarterly Report on Form 10-Q
                           for the period ended June 30, 1998, File No. 0-9207,
                           and incorporated by reference herein).

                  *27      Financial Data Schedules.

          (b)     REPORTS ON FORM 8-K.

                  None filed.

                                       36

<PAGE>   37


                            HARKEN ENERGY CORPORATION

                                   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 thereunto duly authorized.






                                              Harken Energy Corporation
                                   --------------------------------------------
                                                    (Registrant)





Date: August 12, 1999              By: /s/ Bruce N. Huff
      ------------------------         ----------------------------------------
                                   Bruce N. Huff, President, Chief Financial
                                   Officer and Director

                                       37

<PAGE>   38


                               INDEX TO EXHIBITS



<TABLE>
<CAPTION>
Exhibit
Number                   Description
- ------                   -----------

<S>                      <C>
 3.1                     Certificate of Incorporation of Harken Energy Corporation as amended (filed as Exhibit 3.1 to
                         Harken's Annual Report on Form 10-K for fiscal year ended December 31,1989, File No. 0-9207,
                         and incorporated by reference herein).

 3.2                     Amendment to the Certificate of Incorporation of Harken Energy Corporation (filed as Exhibit
                         28.8 to the Registration Statement on Form S-1 of Tejas Power Corporation, file No. 33-37141,
                         and incorporated by reference herein.)

 3.3                     Amendment to the Certificate of Incorporation of Harken Energy Corporation (filed as Exhibit 3
                         to Harken's Quarterly Report on Form 10-Q for fiscal quarter ended June 30, 1991, File No.
                         0-9207, and incorporated by reference herein.)

 3.4                     Amendments to the Certificate of Incorporation of Harken Energy Corporation (filed as Exhibit 3
                         to Harken's Quarterly Report on Form 10-Q for fiscal quarter ended June 30, 1991, File No.
                         0-9207, and incorporated by reference herein.)

 3.5                     Amendments to the Certificate of Incorporation of Harken Energy Corporation (filed as Exhibit
                         3.5 to Harken's Annual Report on Form 10-K for the fiscal year ended December 31, 1996, File
                         No. 0-9207, and incorporated herein by reference).

 3.6                     Amendment to the Certificate of Incorporation of Harken Energy Corporation (filed as Exhibit
                         3.6 to Harken's Annual Report on Form 10-K for the fiscal year ended December 31, 1997, File
                         No. 0-9207, and incorporated by reference herein).

 3.7                     Amendment to the Certificate of Incorporation of Harken Energy Corporation (filed as Exhibit
                         3.6 to Harken's Quarterly Report on Form 10-K for the fiscal quarter ended June 30, 1998, File
                         No. 0-9207, and incorporated by reference herein).

 3.8                     Bylaws of Harken Energy Corporation, as amended (filed as Exhibit 3.2 to Harken's Annual Report
                         on Form 10-K for fiscal year ended December 31, 1989, File No. 0-9207, and incorporated by
                         reference herein).

 4.1                     Form of certificate representing shares of Harken common stock, par value $.01 per share (filed
                         as Exhibit 1 to Harken's Registration Statement on Form 8-A, File No. 0-9027, and incorporated
                         by reference herein.)

 4.2                     Certificate of Designations, Powers, Preferences and Rights of Series A Cumulative Convertible
                         Preferred Stock, $1.00 par value, of Harken Energy Corporation (filed as Exhibit 4.1 to
                         Harken's Annual Report on Form 10-K for the fiscal year ended December 31, 1989, File No.
                         0-9207, and incorporated by reference herein).

 4.3                     Certificate of Designations, Powers, Preferences and Rights of Series B Cumulative Convertible
                         Preferred Stock, $1.00 par value, of Harken Energy Corporation (filed
</TABLE>



<PAGE>   39


<TABLE>
<S>                      <C>
                         as Exhibit 4.2 to Harken's Annual Report on Form 10-K for the fiscal year ended December 31,
                         1989, File No. 0-9207, and incorporated by reference herein).

 4.4                     Certificate of the Designations, Powers, Preferences and Rights of Series C Cumulative
                         Convertible Preferred Stock, $1.00 par value of Harken Energy Corporation (filed as Exhibit 4.3
                         to Harken's Annual Report on Form 10-K for fiscal year ended December 31, 1989, File No.
                         0-9207, and incorporated by reference herein).

 4.5                     Certificate of the Designations of Series D Preferred Stock, $1.00 par value of Harken Energy
                         Corporation (filed as Exhibit 4.3 to Harken's Quarterly Report on Form 10-Q for the fiscal
                         quarter ended September 30, 1995, File No. 0-9207, and incorporated by reference herein).

 4.6                     Rights Agreement, dated as of April 6, 1998, by and between Harken Energy Corporation And
                         ChaseMellon Shareholder Services L.L.C., as Rights Agent (filed as Exhibit 4 to Harken's
                         Current Report on Form 8-K dated April 7, 1998, file No. 0-9207, and incorporated by reference
                         herein).

 4.7                     Certificate of Designations of Series E Junior Participating Preferred Stock (filed as Exhibit
                         B to Exhibit 4 to Harken's Current Report on Form 8-K dated April 7, 1998, file No. 0-9207, and
                         incorporated by reference herein).

 4.8                     Certificate of Designations, Preferences and Rights of Series F Convertible Preferred Stock
                         (filed as Exhibit 4.8 to Harken's Quarterly Report on Form 10-Q for the period ended June 30,
                         1998, File No. 0-9207, and incorporated by reference herein).

 *27                     Financial Data Schedules.
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<ARTICLE> 5

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<FISCAL-YEAR-END>                          DEC-31-1999
<PERIOD-START>                             JAN-01-1999
<PERIOD-END>                               JUN-30-1999
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<SECURITIES>                                57,767,000
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                                0
                                          0
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