<PAGE>
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                                 UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
 
                            ------------------------
 
                                   FORM 10-Q
 
(Mark One)
 
/X/  QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE
     ACT OF 1934
    FOR THE QUARTERLY PERIOD ENDED JUNE 30, 1997
 
                                       OR
 
/ /  TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES
     EXCHANGE ACT OF 1934
    FOR THE TRANSITION PERIOD              TO
 
                        Commission file number: 0-21010
 
                          CENTURA SOFTWARE CORPORATION
             (Exact name of registrant as specified in its charter)
 
<TABLE>
<CAPTION>
<S>                                                  <C>
                    CALIFORNIA                               94-2874178
          (State or other jurisdiction of                 (I.R.S. Employer
          incorporation or organization)               Identification Number)
 
   975 ISLAND DRIVE, REDWOOD SHORES, CALIFORNIA                94065
     (Address of principal executive offices)                (Zip Code)
</TABLE>
 
       Registrant's telephone number, including area code: (650) 596-3400
 
          Securities registered pursuant to Section 12(b) of the Act:
                                      NONE
 
          Securities registered pursuant to section 12(g) of the Act:
                     COMMON STOCK, $.01 PAR VALUE PER SHARE
 
    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_________    No____X____
 
    As of July 31, 1997, there were 15,334,501 shares of the Registrant's Common
Stock outstanding.
 
--------------------------------------------------------------------------------
--------------------------------------------------------------------------------
<PAGE>
                          CENTURA SOFTWARE CORPORATION
 
                 FORM 10-Q for the Quarter Ended March 31, 1997
 
                                     INDEX
 
<TABLE>
<CAPTION>
                                                                                                                PAGE NUMBER
                                                                                                                -----------
<S>         <C>        <C>        <C>                                                                           <C>
PART I      FINANCIAL INFORMATION
 
            Item 1. Financial Statements and Supplementary Data
 
                       a)         Condensed consolidated balance sheets at June 30, 1997 and December 31,
                                  1996........................................................................           1
 
                       b)         Condensed consolidated statements of operations for the three months and six
                                  months ended June 30, 1997 and 1996.........................................           2
 
                       c)         Condensed consolidated statements of cash flows for the six months ended
                                  June 30, 1997 and 1996......................................................           3
 
                       d)         Notes to condensed consolidated financial statements........................           4
 
            Item 2. Management's Discussion and Analysis of Financial Condition and Results
            of Operations.....................................................................................           7
 
PART II     OTHER INFORMATION
 
            Item 1. Legal Proceedings.........................................................................          18
 
            Item 2. Changes in Securities.....................................................................          18
 
            Item 3. Defaults in Senior Securities.............................................................          18
 
            Item 4. Submission of Matters to a Vote of Security Holders.......................................          18
 
            Item 5. Other Information.........................................................................          18
 
            Item 6. Exhibits and Reports on Form 8-K..........................................................          19
</TABLE>
<PAGE>
PART I -- FINANCIAL INFORMATION
ITEM 1. FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA
                          CENTURA SOFTWARE CORPORATION
 
                     CONDENSED CONSOLIDATED BALANCE SHEETS
 
                     (IN THOUSANDS, EXCEPT PER SHARE DATA)
 
<TABLE>
<CAPTION>
                                                                         JUNE 30,     DECEMBER 31,
                                                                           1997           1996
                                                                        -----------   ------------
                                                                        (UNAUDITED)
<S>                                                                     <C>           <C>
                                              ASSETS
Current Assets:
  Cash and cash equivalents...........................................   $  4,812       $  6,669
  Short-term investments..............................................        565          2,065
  Accounts receivable, less allowances of $2,931 and $2,826...........      8,917         13,574
  Other current assets................................................      4,387          3,516
                                                                        -----------   ------------
    Total current assets..............................................     18,681         25,824
Property and equipment, at cost, net of accumulated depreciation......      4,742          3,622
Capitalized software, at cost, net of accumulated amortization........      3,443          4,226
Long-term investments.................................................        976          1,221
Other assets..........................................................      2,017          1,812
                                                                        -----------   ------------
    Total assets......................................................   $ 29,859       $ 36,705
                                                                        -----------   ------------
                                                                        -----------   ------------
 
                              LIABILITIES AND SHAREHOLDERS' DEFICIT
Current Liabilities:
  Current portion of long-term debt...................................   $ 10,188       $    336
  Accounts payable....................................................      6,355          5,683
  Accrued compensation and related expenses...........................      2,254          2,484
  Other accrued liabilities...........................................      4,057          4,313
  Accrued litigation expenses.........................................        209          6,733
  Deferred revenue....................................................     17,795         21,891
                                                                        -----------   ------------
    Total current liabilities.........................................     40,858         41,440
Long-term debt, less current portion..................................         --         10,032
Other long-term liabilities...........................................        856          2,156
                                                                        -----------   ------------
    Total liabilities.................................................     41,714         53,628
                                                                        -----------   ------------
 
Shareholders' Deficit:
  Common stock, par value $.01 per share; 60,000 shares authorized;
    15,301 shares and 13,728 shares issued and outstanding............     69,896         63,047
  Cumulative translation adjustment...................................       (505)          (513)
  Accumulated deficit.................................................    (81,246)       (79,457)
                                                                        -----------   ------------
    Total shareholders' deficit.......................................    (11,855)       (16,923)
                                                                        -----------   ------------
    Total liabilities and shareholders' deficit.......................   $ 29,859       $ 36,705
                                                                        -----------   ------------
                                                                        -----------   ------------
</TABLE>
 
  THE ACCOMPANYING NOTES ARE AN INTEGRAL PART OF THESE CONDENSED CONSOLIDATED
                             FINANCIAL STATEMENTS.
 
                                       1
<PAGE>
                          CENTURA SOFTWARE CORPORATION
 
                CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS
 
                                  (Unaudited)
 
                     (IN THOUSANDS, EXCEPT PER SHARE DATA)
 
<TABLE>
<CAPTION>
                                                                         THREE MONTHS ENDED     SIX MONTHS ENDED
                                                                              JUNE 30,              JUNE 30,
                                                                        --------------------  --------------------
                                                                          1997       1996       1997       1996
                                                                        ---------  ---------  ---------  ---------
<S>                                                                     <C>        <C>        <C>        <C>
Net revenues:
  Product.............................................................  $  11,790  $  11,657  $  21,304  $  22,588
  Service.............................................................      4,314      3,989      8,400      8,451
                                                                        ---------  ---------  ---------  ---------
    Net revenues......................................................     16,104     15,646     29,704     31,039
                                                                        ---------  ---------  ---------  ---------
 
Cost of revenues:
  Product.............................................................      1,301      1,253      2,667      2,499
  Service.............................................................      2,272      2,262      4,391      4,457
                                                                        ---------  ---------  ---------  ---------
    Cost of revenues..................................................      3,573      3,515      7,058      6,956
                                                                        ---------  ---------  ---------  ---------
      Gross profit....................................................     12,531     12,131     22,646     24,083
                                                                        ---------  ---------  ---------  ---------
 
Operating expenses:
  Sales and marketing.................................................      7,387      7,443     14,010     14,186
  Research and development............................................      2,718      2,656      5,421      5,557
  General and administrative..........................................      1,764      1,667      3,457      3,358
  Acquisition expense.................................................        270         --        531         --
                                                                        ---------  ---------  ---------  ---------
    Total operating expenses..........................................     12,139     11,766     23,419     23,101
                                                                        ---------  ---------  ---------  ---------
      Operating income (loss).........................................        392        365       (773)       982
 
Other income (expense):
  Interest income.....................................................         41        192         96        386
  Interest expense....................................................       (210)      (262)      (424)      (409)
  Foreign currency gain (loss)........................................         78        159       (653)       (22)
                                                                        ---------  ---------  ---------  ---------
Income (loss) before income taxes.....................................        301        454     (1,754)       937
Provision for income taxes............................................         25         31         35        193
                                                                        ---------  ---------  ---------  ---------
Net income (loss).....................................................  $     276  $     423  $  (1,789) $     744
                                                                        ---------  ---------  ---------  ---------
                                                                        ---------  ---------  ---------  ---------
 
Net income (loss) per share...........................................  $    0.02  $    0.03  $   (0.12) $    0.06
                                                                        ---------  ---------  ---------  ---------
                                                                        ---------  ---------  ---------  ---------
 
Weighted average common shares and equivalents........................     15,289     12,735     15,256     12,694
                                                                        ---------  ---------  ---------  ---------
                                                                        ---------  ---------  ---------  ---------
</TABLE>
 
  THE ACCOMPANYING NOTES ARE AN INTEGRAL PART OF THESE CONDENSED CONSOLIDATED
                             FINANCIAL STATEMENTS.
 
                                       2
<PAGE>
                          CENTURA SOFTWARE CORPORATION
 
                CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
 
                                  (Unaudited)
 
                                 (IN THOUSANDS)
 
<TABLE>
<CAPTION>
                                                                                            SIX MONTHS ENDED
                                                                                                JUNE 30,
                                                                                          --------------------
                                                                                            1997       1996
                                                                                          ---------  ---------
<S>                                                                                       <C>        <C>
Cash flows from operating activities:
  Net income (loss).....................................................................  $  (1,789) $     744
  Adjustments to reconcile net loss to net cash provided by (used in) operating
    activities:
    Depreciation and amortization.......................................................      2,704      2,379
    Provision for doubtful accounts.....................................................        247        101
    Provision for sales returns and allowances..........................................        257        649
    Valuation of stock warrant issued in connection with factoring agreement............        102         --
    Changes in assets and liabilities:
      Accounts receivable...............................................................      4,153        788
      Other current assets..............................................................       (871)      (417)
      Other assets......................................................................       (272)        29
      Accounts payable and accrued liabilities..........................................     (1,506)    (4,268)
      Deferred revenue..................................................................     (4,096)    (3,800)
      Accrued litigation expense........................................................          9       (994)
      Other long-term liabilities.......................................................        392        363
                                                                                          ---------  ---------
        Net cash used in operating activities...........................................       (670)    (4,426)
                                                                                          ---------  ---------
Cash flows from investing activities:
  Maturities of investments.............................................................      1,746      7,215
  Purchases of investments..............................................................         (1)      (181)
  Proceeds from sale of property and equipment..........................................        462        425
  Acquisitions of property and equipment................................................     (2,853)      (935)
  Capitalization of software costs......................................................       (454)    (1,351)
  Capitalization of other intangibles...................................................       (129)      (112)
                                                                                          ---------  ---------
        Net cash provided by (used in) investing activities.............................     (1,229)     5,061
                                                                                          ---------  ---------
Cash flows from financing activities:
  Repayment of note payable.............................................................       (180)      (164)
  Repayment of capital lease obligations................................................         --        (19)
  Proceeds from issuance of common stock, net...........................................        214        305
                                                                                          ---------  ---------
        Net cash provided by financing activities.......................................         34        122
                                                                                          ---------  ---------
Effect of exchange rate changes on cash and cash equivalents............................          8        (50)
                                                                                          ---------  ---------
Net increase (decrease) in cash and cash equivalents....................................     (1,857)       707
Cash and cash equivalents at beginning of period........................................      6,669      9,865
                                                                                          ---------  ---------
Cash and cash equivalents at end of period..............................................  $   4,812  $  10,572
                                                                                          ---------  ---------
                                                                                          ---------  ---------
</TABLE>
 
  THE ACCOMPANYING NOTES ARE AN INTEGRAL PART OF THESE CONDENSED CONSOLIDATED
                             FINANCIAL STATEMENTS.
 
                                       3
<PAGE>
                          CENTURA SOFTWARE CORPORATION
 
              NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
 
                                  (Unaudited)
 
1. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
 
    METHOD OF PREPARATION.  The condensed consolidated balance sheet as of June
30, 1997, the condensed consolidated statements of operations for the three and
six month periods ended June 30, 1997 and 1996, and cash flows for the six month
periods ended June 30, 1997 and 1996 have been prepared by Centura Software
Corporation (the "Company") without audit. In the opinion of management, all
adjustments necessary for a fair statement of the financial position, results of
operations, and cash flows have been made for all periods presented. The
financial data should be reviewed in conjunction with the audited financial
statements and notes thereto included in the Company's Annual Report on Form
10-K for the year ended December 31, 1996. The results of operations for the
three and six month periods ended June 30, 1997, are not necessarily indicative
of the operating results to be expected for the full year.
 
    The December 31, 1996 balance sheet was derived from audited financial
statements, but does not include all disclosures required by generally accepted
accounting principles.
 
    COMPUTATION OF NET INCOME (LOSS) PER SHARE.  Net income (loss) per share is
computed using the weighted average number of common and common equivalent
shares outstanding. Common stock equivalents (using the modified treasury stock
method) have been included in the computation when dilutive. Convertible
debentures, which are not common stock equivalents, are excluded in a fully
diluted calculation of earnings (loss) per share because their effect is
antidilutive.
 
    RECENT ACCOUNTING PRONOUNCEMENT.  In February 1997, the Financial Accounting
Standards Board issued Statement of Financial Accounting Standards No. 128,
"Earnings Per Share" ("SFAS 128"). SFAS 128 is effective for the Company's
fiscal year ending December 31, 1997. Under SFAS 128, primary earnings per share
is replaced by basic earnings per share and fully diluted earnings per share is
replaced by diluted earnings per share. If the Company had adopted SFAS 128 for
the three and six month periods ended June 30, 1997, the Company's loss per
share would have been as follows:
 
<TABLE>
<CAPTION>
                                                                   THREE MONTHS     SIX MONTHS
                                                                  ENDED JUNE 30,    ENDED JUNE
                                                                       1997          30, 1997
                                                                  ---------------  -------------
                                                                    (UNAUDITED)     (UNAUDITED)
<S>                                                               <C>              <C>
Basic income (loss) per share...................................     $    0.02       $   (0.12)
Diluted income (loss) per share.................................     $    0.02       $   (0.12)
</TABLE>
 
    In June 1997, the Financial Accounting Standards Board issued Statement of
Financial Accounting Standards No. 130, "Reporting Comprehensive Income" ("SFAS
130"). SFAS 130 establishes standards for the reporting of comprehensive income
and its components in a full set of general-purpose financial statements for
periods ending after December 15, 1997. Reclassification of financial statements
for earlier periods for comparative purposes is required. The Company will adopt
SFAS 130 in 1997 and does not expect such adoption to have a material effect on
the consolidated financial statements.
 
    In June 1997, the Financial Accounting Standards Board issued Statement of
Financial Accounting Standards No. 131, "Disclosures About Segments of An
Enterprise and Related Information" ("SFAS 131"). SFAS 131 revises information
regarding the reporting of operating segments. It also establishes standards for
related disclosures about products and services, geographic areas and major
customers. The Company will adopt SFAS 131 beginning in 1998 and does not expect
such adoption to have a material effect on the consolidated financial
statements.
 
                                       4
<PAGE>
                          CENTURA SOFTWARE CORPORATION
 
        NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
 
                                  (Unaudited)
 
1. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (CONTINUED)
    RECLASSIFICATIONS.  In order to conform to the current period presentation,
certain reclassifications have been made to the condensed consolidated
statements of operations for the three and six month periods ended June 30, 1996
and to the condensed consolidated statement of cash flows for the six months
ended June 30, 1996.
 
2. LITIGATION
 
    On May 2, 1994, a lawsuit was filed against the Company and certain of its
officers and directors, by a holder of the Company's common stock, on his own
behalf and purportedly on behalf of a class of others similarly situated. The
lawsuit was subsequently amended, and alleged that the Company made false and
misleading statements and failed to disclose material information relating to
existing business conditions and the Company's prospects and that officers and
directors violated the insider trading laws. The plaintiff was seeking damages
of an unstated amount.
 
    The Company reached a binding settlement agreement with plaintiffs' counsel
in this lawsuit, and gained court approval on September 30, 1996. Under the
terms of the agreement, the Company would provide $3 million and 1,875,000
shares to a fund to be distributed among the members of the plaintiff class. The
Company also agreed to supplement this payment with up to 625,000 additional
shares in the event the value of its common stock was less than an average price
of $6.00 per share during certain twenty day trading periods specified by the
Court. The Company's directors and officers' liability insurer paid
approximately $2 million of the cash contribution to the settlement fund. The
Company paid the remaining cash settlement during 1996. The 1995 financial
statements include $15.3 million in litigation expense for the agreement and
associated legal expenses. As of March 31, 1997, the Company had distributed all
common stock shares as required by the settlement agreement.
 
    As of June 30, 1997, to the best of the Company's knowledge there were no
other pending actions, potential actions, claims or proceedings against the
Company that were likely to result in potential damages that would have a
material adverse impact on the Company's financial statements. As noted in the
section entitled "Factors That May Affect Future Results" under Item 2 herein,
the Company exists in a volatile legal and regulatory environment and it is not
possible to anticipate or estimate the potential adverse impact of unknown
claims or liabilities against the Company, its officers and directors, and as
such no estimate is made in the Company's financial statements for such unknown
claims or liabilities.
 
3. TERMINATION OF MERGER AGREEMENT WITH INFOSPINNER INC.
 
    On January 6, 1997, the Company entered into a definitive agreement (the
"Agreement") to acquire InfoSpinner, Inc. ("InfoSpinner") of Richardson, Texas.
The completion of the transaction was subject to the approval of both companies'
shareholders as well as other legal requirements. In addition, under the terms
of the Agreement, either party had the right to terminate the transaction if the
merger had not been consummated by April 30, 1997. As of April 30, 1997, the
Company did not obtain the majority vote of the shareholders required for the
approval of the proposed merger, and as a result, the board of directors of
InfoSpinner elected to exercise its right to terminate the transaction.
 
    In addition to the Agreement, the companies also entered into a
distributorship agreement (the "Distributorship Agreement") on January 6, 1997,
which grants the Company the right to distribute
 
                                       5
<PAGE>
                          CENTURA SOFTWARE CORPORATION
 
        NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
 
                                  (Unaudited)
 
3. TERMINATION OF MERGER AGREEMENT WITH INFOSPINNER INC. (CONTINUED)
InfoSpinner's Foresite Web Integration Server on a worldwide basis. The
Distributorship Agreement remains in full force and effect.
 
4. FACTORING AGREEMENT
 
    On June 26, 1997, the Company entered into a one year agreement to sell,
with recourse, certain accounts receivable. Under the terms of the agreement,
the Company may sell accounts receivable at an advance rate of eighty percent of
the eligible accounts receivable sold. Interest is calculated at the rate of
1.2% per month based on the average daily balance outstanding. As of June 30,
1997 total eligible accounts receivable sold were $2.5 million. On June 30,
1997, in relation to this agreement, the Company issued a warrant to purchase
90,000 shares of common stock at an exercise price of $2.094 per share. The
warrant expires on June 30, 2002. The warrant was valued at $102,000 using a
risk-free rate of 6.33% and a volatility factor of 55%, and the related charge
is included in general and administrative expenses.
 
                                       6
<PAGE>
                          CENTURA SOFTWARE CORPORATION
 
        NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
 
                                  (Unaudited)
 
ITEM 2. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS
        OF OPERATIONS
 
    This Quarterly Report on Form 10-Q contains certain forward-looking
statements within the meaning of Section 27A of the Securities Act of 1933 and
Section 21E of the Securities Exchange Act of 1934. Actual results could differ
materially from those projected in the forward-looking statements as a result of
certain of the risk factors set forth below and elsewhere in this Quarterly
Report on Form 10-Q. In evaluating the Company's business, prospective investors
should carefully consider the following factors in addition to the other
information presented in this report.
 
    The following discussion should be read in conjunction with the unaudited
condensed consolidated financial statements and notes thereto included in Part
I-Item 1 of this Quarterly Report, and the audited consolidated financial
statements and notes thereto, and Management's Discussion and Analysis of
Financial Condition and Results of Operations included in the Company's Annual
Report on Form 10-K for the year ended December 31, 1996.
 
RESULTS OF OPERATIONS:
 
    NET PRODUCT REVENUES.  Net product revenues increased 1% to $11.8 million
for the quarter ended June 30, 1997, from $11.7 million for the quarter ended
June 30, 1996. The increase in net product revenues is primarily attributable to
increased sales of SQLBASE products and new revenues generated by FORESITE, the
Internet integration product sold by the Company pursuant to the Distributorship
Agreement with InfoSpinner, Inc. These increases were offset by decreases in
sales of SQLWINDOWS and CENTURA products as compared with the same period in the
prior year. International sales accounted for $7.5 million or 64% and $7.8
million or 67% of net product revenues for the quarters ended June 30, 1997 and
1996, respectively.
 
    Net product revenues decreased 6% to $21.3 million for the six months ended
June 30, 1997, from $22.6 million for the six months ended June 30, 1996.
International sales accounted for $13.7 million or 64% and $15.2 million or 67%
of net product revenues for the six months ended June 30, 1997 and 1996,
respectively. The decrease in international sales of $1.5 million is primarily
due to decreased sales in the Asia Pacific and Latin America areas, caused
primarily by distributor problems in Japan and Brazil early in 1997. The
distributor problems resulted in a disruption of sales activities in those
regions and was the principal factor contributing to the overall decrease in net
product revenue over the six month period as compared with the same period in
the prior year. Concurrently with the overall decrease in net product revenue
the Company recognized a shift in product revenue mix away from the SQLWINDOWS
products to a greater proportion of CENTURA products over the six month period,
primarily due to the introduction of the CENTURA products commencing in May
1996. In addition, the Company experienced an increase in SQLBASE revenues and
new revenues generated from the FORESITE product in the six month period ended
June 30, 1997, compared with the same period in the prior year.
 
                                       7
<PAGE>
                          CENTURA SOFTWARE CORPORATION
 
        NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
 
                                  (Unaudited)
 
    NET SERVICE REVENUES.  Net service revenues increased 8% to $4.3 million for
the quarter ended June 30, 1997, from $4.0 million for the quarter ended June
30, 1996. The increase was primarily due to increased technical support revenue,
partially offset by a reduction in customer training revenue. International
sales accounted for 48% and 39% of total net service revenues for the quarters
ended June 30, 1997 and 1996, respectively. Net service revenues remained
constant at $8.4 million for the six months ended June 30, 1997 compared with
the same period in 1996. International sales accounted for 42% and 39% of total
net service revenues for the six months ended June 30, 1997 and 1996,
respectively.
 
    COST OF PRODUCT REVENUES.  Cost of product revenues includes the cost of
subcontracted production and the amortization of capitalized software. Cost of
product revenues increased 4% to $1.3 million and 7% to $2.7 million over the
three and six month periods ended June 30, 1997, from $1.2 million and $2.5
million in the comparable periods in 1996, respectively. These increases were
primarily due to the increased amortization of capitalized software related to
the CENTURA products, partially offset by reduced production costs. Cost of
product revenues as a percentage of product revenues remained constant at 11%
for the quarters ended June 30, 1997 and 1996. Cost of product revenues as a
percentage of product revenues was 13% and 11% for the six months ended June 30,
1997 and 1996, respectively.
 
    In accordance with Statement of Financial Accounting Standards No. 86,
"Accounting for the Costs of Computer Software to be Sold, Leased or Otherwise
Marketed", the Company capitalizes internal development costs on a project when
the technological feasibility of such project has been determined. The Company
ceases capitalizing such expenses when the products derived from the project are
released for sale. The capitalized costs are then amortized ratably over the
useful life of the products, generally estimated to be two to three years.
Amortization of capitalized software costs were $371,000 and $692,000 for the
three and six month periods ended June 30, 1997 compared with $238,000 and
$379,000 for the same periods in 1996.
 
    COST OF SERVICE REVENUES.  Cost of service revenues consists primarily of
personnel costs related to product license maintenance, training and technical
support. Cost of service revenues remained constant at $2.2 million and $4.4
million for the three and six month periods ended June 30, 1997 compared with
the same periods in 1996. Cost of service revenues as a percentage of net
service revenues was 53% and 57% for the quarters ended June 30, 1997 and 1996,
respectively, and 52% and 53% for the six months ended June 30, 1997 and 1996,
respectively. The decrease in the percentage of service cost over service
revenue results primarily from increased net service revenue in the quarter
ended June 30, 1997 over a cost structure consistent with the prior year.
 
    SALES AND MARKETING EXPENSES.  Sales and marketing expenses were $7.4
million, or 46% of net revenues, for the quarter ended June 30, 1997, compared
with $7.4 million, or 48% of net revenues, for the quarter ended June 30, 1996.
For the six months ended June 30, 1997, sales and marketing expenses were $14.0
million, or 47% of net revenues, compared with $14.2 million or 46% of net
revenues for the six months ended June 30, 1996. Expenditures for sales and
marketing activities reflect the Company's efforts to achieve cost efficiencies
by focusing marketing expenditures in specific segments while maintaining
spending levels consistent with prior periods.
 
                                       8
<PAGE>
                          CENTURA SOFTWARE CORPORATION
 
        NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
 
                                  (Unaudited)
 
    RESEARCH AND DEVELOPMENT EXPENSES.  The table below sets forth gross
research and development expenses, capitalized software development costs, and
net research and development expenses in dollar amounts and as a percentage of
net revenues for the periods indicated:
 
<TABLE>
<CAPTION>
                                                                    THREE MONTHS ENDED        SIX MONTHS
                                                                                                ENDED
                                                                         JUNE 30,              JUNE 30,
                                                                   --------------------  --------------------
                                                                     1997       1996       1997       1996
                                                                   ---------  ---------  ---------  ---------
<S>                                                                <C>        <C>        <C>        <C>
Gross research and development expenses..........................  $   2,856  $   3,185  $   5,875  $   6,908
Capitalized internal software development costs..................       (138)      (529)      (454)    (1,351)
                                                                   ---------  ---------  ---------  ---------
Net research and development expenses............................  $   2,718  $   2,656  $   5,421  $   5,557
                                                                   ---------  ---------  ---------  ---------
                                                                   ---------  ---------  ---------  ---------
As a Percentage of Net Revenues:
  Gross research and development expenses........................         18%        20%        20%        22%
  Net research and development expenses..........................         17%        17%        18%        18%
</TABLE>
 
    The decrease in gross research and development expenses, and capitalized
internal software development costs primarily reflects expanded development
efforts related to the CENTURA product in the first half of 1996.
 
    GENERAL AND ADMINISTRATIVE EXPENSES.  General and administrative expenses
remained constant at $1.7 million for the quarters ended June 30, 1997 and 1996,
and remained constant at $3.4 million for the six months ended June 30, 1997 and
1996.
 
    OTHER INCOME (EXPENSE), NET.  Other income (expense), net is comprised of
interest income, interest expense, and gains or losses on foreign currency
transactions. For the quarter ended June 30, 1997 other income (expense), net
was $(0.1) million, compared to $0.1 million for the quarter ended June 30,
1996. This was primarily attributable to a reduction in interest income
resulting from a decrease in funds available for investment as compared with the
prior year.
 
    For the six months ended June 30, 1997 other income (expense), net was
$(1.0) million, compared to $(0.1) million for the six months ended June 30,
1996. This was primarily attributable to a reduction in interest income
resulting from decreased funds available for investment as compared with the
prior year and increased foreign currency losses resulting primarily from the
strengthening of the United States Dollar against the British Pound and German
Mark between December 31, 1996 and March 31, 1997.
 
    PROVISION FOR INCOME TAXES.  The provision for income taxes was
insignificant for the quarters ended June 30, 1997, June 30, 1996 and for the
six months ended June 30, 1997 and was $0.2 million for the six months ended
June 30, 1996. The provision primarily relates to foreign withholding taxes. Due
to the availability of net operating loss carryforwards arising in prior years,
no provision for income taxes was made for the three and six month periods ended
June 30, 1997 and 1996.
 
LIQUIDITY AND CAPITAL RESOURCES:
 
    At June 30, 1997, the Company had a deficit working capital position of
$22.2 million due principally to deferred revenues of $17.8 million, and
principal and interest of $11.7 million related to an unsecured floating rate
convertible subordinated note. The Company believes that expected cash flows
from operations and existing cash balances, may not be sufficient to meet the
Company's currently anticipated working capital and capital expenditure
requirements during the next 12 months without the successful
 
                                       9
<PAGE>
                          CENTURA SOFTWARE CORPORATION
 
        NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
 
                                  (Unaudited)
 
implementation of cost reduction and restructuring programs commencing in the
quarter ended September 30, 1997. There can be no assurance that such cost
reduction and restructuring programs can be implemented without adversely and
disproportionately impacting revenues and operating results. The Company is
exploring several options to raise cash for operational or other needs. There
can be no assurance that financing will be available on reasonable terms or at
all. Any additional equity financing may result in dilution to the Company's
shareholders.
 
    Net cash used in operating activities for the six months ended June 30, 1997
resulted primarily from the recognition of revenues for which cash had been
received in prior periods, net operating losses, and decreases in other
long-term liabilities. These uses of cash were offset, in part, by the sale of
certain accounts receivable under a factoring agreement, non cash charges for
depreciation and amortization and increases in accounts payable and accrued
liabilities. Cash used in investing activities totaled $1.2 million due
primarily to purchases of property and equipment, which were funded, in part, by
maturities of short-term investments.
 
    During March 1995, the Company entered into an unsecured floating rate
convertible subordinated note and related agreement (the "CA Agreement") with
Computer Associates International, Inc. ("CA") for $10.0 million. The note
matures on May 1, 1998 and is convertible into common stock at the Company's
option on the maturity date for a number of shares based on the market price of
the Company's common stock at the time of conversion. Interest on the note is
the one-month LIBOR plus 1.25% and is payable quarterly. At the Company's option
interest payments may be deferred until the principal is due. Material covenants
of the Company under the CA Agreement include the Company's agreement to: pay
and discharge its material obligations and liabilities, including tax
obligations; continue to engage in business of the same general type currently
conducted; refrain from declaring any dividend or from repurchasing or redeeming
its common stock or indebtedness; refrain from consolidating or merging (except
where the Company is the surviving corporation and incurs no event of default
under such note); refrain from incurring senior or pari passu indebtedness or
from creating or incurring encumbrances or liens, other than certain permitted
liens on its properties. The agreement also requires the Company to maintain a
minimum market capitalization of $40.0 million commencing on (and including)
November 1, 1997, and continuing through the duration of the note (the "Minimum
Market Capitalization Requirement"). If the Company does not meet the Minimum
Market Capitalization Requirement, the Company will lose the option to convert
the note into common stock, and all outstanding principal and interest will be
due and payable on the conversion date, May 1, 1998.
 
    Additional financing will be required to meet NASDAQ minimum net worth
requirements, fund continuing operations, as well as, to pay the unsecured
floating rate convertible subordinated note and related outstanding interest
with CA.
 
    The Company's capital requirements also may be affected by acquisitions of
businesses, products and technologies that are complementary to the Company's
business, which the Company considers from time to time. The Company regularly
evaluates such opportunities. Any such transaction, if consummated, may further
reduce the Company's working capital or require the issuance of equity.
 
FACTORS THAT MAY AFFECT FUTURE RESULTS
 
    RECENT COMPANY LOSSES; FLUCTUATIONS IN QUARTERLY RESULTS.  The Company has
experienced in the past and expects in the future to continue to experience
significant fluctuations in quarterly operating results. There can be no
assurance that the restructuring of the Company's business strategies and
tactics, commenced in early 1996, will be successful or that the Company will be
able to achieve or sustain any such
 
                                       10
<PAGE>
                          CENTURA SOFTWARE CORPORATION
 
        NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
 
                                  (Unaudited)
 
profitability on a quarterly or annual basis. In addition, quarterly operating
results of the Company will depend on a number of other factors that are
difficult to forecast, including, general market demand for the Company's
products; the size and timing of individual orders during a quarter; the
Company's ability to fulfill such orders; introduction, localization or
enhancement of products by the Company; delays in the introduction and/or
enhancement of products by the Company and its competitors; market acceptance of
new products; reviews in the industry press concerning the products of the
Company or its competitors; software "bugs" or other product quality problems;
competition and pricing in the software industry; sales mix among distribution
channels; customer order deferrals in anticipation of new products; reduction in
demand for existing products and shortening of product life cycles as a result
of new product introductions; changes in operating expenses; changes in the
Company's strategy; personnel changes; foreign currency exchange rates; mix of
products sold; inventory obsolescence; product returns and rotations; and
general economic conditions. Sales of the Company's products also may be
negatively affected by delays in the introduction or availability of new
hardware and software products from third parties. The Company's financial
results also may vary as a result of seasonal factors including year and quarter
end purchasing and the timing of marketing activities, such as industry
conventions and tradeshows.
 
    Although the Company has operated historically with little or no backlog of
traditional boxed product shipments, it has experienced a seasonal pattern of
product revenue decline between the fourth quarter and the succeeding first
quarter, contributing to lower worldwide product revenues and operating results
during such quarters. It has generally realized lower European product revenues
in the third quarter as compared to the rest of the year. The Company has also
experienced a pattern of recording a substantial portion of its revenues in the
third month of a quarter. As a result, product revenues in any quarter are
dependent on orders booked in the last month. Because the Company's staffing and
other operating expenses are based in part on anticipated net revenues, a
substantial portion of which may not be generated until the end of each quarter,
delays in the receipt or shipment of orders, including delays that may be
occasioned by failures of third party product fulfillment firms to produce and
ship products, or the actual loss of product orders can cause significant
variations in operating results from quarter to quarter. The Company may be
unable to adjust spending in a timely manner to compensate for any unexpected
revenue shortfall. Accordingly, any significant shortfall in sales of the
Company's products in relation to the Company's expectations could have an
immediate adverse impact on the Company's business, operating results and
financial condition. To the extent that the Company's expenses precede or are
not subsequently followed by increased revenues, its business, operating results
and financial condition could be materially and adversely affected. In addition,
the Company currently intends to increase its operating expenses to primarily
fund increases in its sales and marketing operations and expand distribution
channels. To the extent that such expenses precede or are not subsequently
followed by increased net revenues, the Company's business, operating results
and financial condition could be materially and adversely affected. Due to the
foregoing factors, it is likely that the Company's operating results for some
future quarter will fall below the expectations of securities analysts and
investors. In such event, the trading price of the Company's common stock could
be materially and adversely affected.
 
    NEED FOR ADDITIONAL EQUITY FINANCING.  The Company will need to seek
additional equity financing to meet NASDAQ minimum net worth requirements,
continuing operations, as well as, pay the unsecured floating rate convertible
subordinated note and related outstanding interest with CA. Furthermore, the
Company must achieve a reasonable operating performance to satisfy its current
and future financing needs. There can be no assurance that financing will be
available on reasonable terms or at all. Any additional equity financing may
result in dilution to the Company's shareholders.
 
                                       11
<PAGE>
                          CENTURA SOFTWARE CORPORATION
 
        NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
 
                                  (Unaudited)
 
    VOLATILITY OF THE COMPANY'S COMMON STOCK PRICE.  The market for the
Company's common stock is highly volatile. The trading price of the Company's
common stock fluctuated widely in 1996 and the first six months in 1997 and may
continue to be subject to wide fluctuations in response to quarterly variations
in operating and financial results, announcements of new products or customer
contracts by the Company or its competitors, litigation and other factors. Any
shortfall in revenue or earnings from levels expected by securities analysts or
others could have an immediate and significant adverse effect on the trading
price of the Company's common stock in any given period. Additionally, the
Company may not learn of, or be able to confirm, revenue or earnings shortfalls
until late in the fiscal quarter or following the end of the quarter, which
could result in an even more immediate and adverse effect on the trading of the
Company's common stock. Finally, the Company participates in a highly dynamic
industry, which often results in significant volatility of its common stock
price.
 
    NEW PRODUCT RISKS; RAPID TECHNOLOGICAL CHANGE.  The markets for the
Company's software products and services are characterized by rapid
technological developments, evolving industry standards, swift changes in
customer requirements and computer operating environments, and frequent new
product introductions and enhancements. As a result, the success of the Company
depends substantially upon its ability to continue to enhance its existing
products, develop and introduce in a timely manner new products incorporating
technological advances and meet increasing customer expectations, all on a
timely and cost-effective basis. To the extent one or more competitors introduce
products that better address customer needs, the Company's business could be
adversely affected. The Company currently markets the following primary
products: CENTURA, SQLWINDOWS, SQLBASE and SQLHOST, as well as FORESITE, the
Internet integration product, sold by the Company on a non-exclusive basis
pursuant to the Distributorship Agreement with InfoSpinner, Inc. Its strategy is
centered on the successful delivery and market acceptance of its CENTURA
products and FORESITE product. The release of the CENTURA line of products
occurred in May 1996. The Company's success will also depend on the ability of
its products to perform well with existing and future leading, industry-standard
application software products intended to be used in connection with RDBMS. Any
failure to deliver these products as scheduled or their failure to achieve early
market acceptance as a result of competition, technological change, failure of
the Company to timely release new versions or upgrades, the failure of such
upgrades to achieve market acceptance or otherwise, could have a material
adverse effect on the business, operating results and financial condition of the
Company. In addition, commercial acceptance of the Company's products and
services could be adversely affected by critical or negative statements or
reports by industry and financial analysts concerning the Company and its
products, or other factors such as the Company's financial performance. If the
Company is unable to develop and introduce new products or enhancements to
existing products in a timely manner in response to changing market conditions
or customer requirements, its business, operating results and financial
condition could be materially and adversely affected.
 
    The Company depends substantially upon internal efforts for the development
of new products and product enhancements. The Company has in the past
experienced delays in the development of new products and product versions,
which resulted in loss or delays of product revenues, and there can be no
assurance that the Company will not experience further delays in connection with
its current product development or future development activities. Also, software
products as complex as those offered by the Company may contain undetected
errors when first introduced or as new versions are released. The Company has in
the past discovered software errors in certain of its new products and
enhancements, respectively, after their introduction. Although the Company has
not experienced material adverse effects resulting from any such errors to date,
there can be no assurance that errors will not be found in new products or
releases after commencement of commercial shipments, resulting in adverse
product reviews
 
                                       12
<PAGE>
                          CENTURA SOFTWARE CORPORATION
 
        NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
 
                                  (Unaudited)
 
and a loss of or delay in market acceptance, which could have a material adverse
effect upon the Company's business, operating results and financial condition.
 
    From time to time, the Company or its competitors may announce new products,
product versions, capabilities or technologies that have the potential to
replace or shorten the life cycles of the Company's existing products. The
Company has historically experienced increased returns of a particular product
version following the announcement of a planned release of a new version of that
product. The Company provides allowances for anticipated returns, and believes
its existing policies result in the establishment of allowances that are
adequate, and have been adequate in the past, but there can be no assurance that
product returns will not exceed such allowances in the future. The announcement
of currently planned or other new products may cause customers to delay their
purchasing decisions in anticipation of such products, which could have a
material adverse effect on business, operating results and financial condition
of the Company.
 
    DEPENDENCE ON KEY PERSONNEL.  The Company's future performance is
substantially dependent on the performance of its executive officers and key
product development, technical, sales, marketing and management personnel. The
Company does not have employment or non-competition agreements with any of its
employees except Sam Inman, the Company's CEO and President. The loss of the
services of any executive officer or other key technical or management personnel
of the Company for any reason could have a material adverse effect on the
business, operating results and financial condition of the Company.
 
    The future success of the Company also depends on its continuing ability to
identify, hire, train, motivate and retain other highly qualified technical and
managerial personnel. Competition for such personnel is intense and the Company
has experienced difficulty in identifying and hiring qualified engineering and
software development personnel. There can be no assurance that the Company will
be able to attract, assimilate or retain other highly qualified technical and
managerial personnel in the future. The inability to attract and retain the
necessary technical and managerial personnel could have a material and adverse
effect upon its business, operating results and financial condition.
 
    HIGHLY COMPETITIVE MARKETS.  The markets for software products such as the
Company's products are intensely competitive, subject to rapid change and
characterized by constant demand for new product features, pressure to
accelerate the release of new products and product enhancements and to reduce
prices. A number of companies currently offer products that compete directly or
indirectly with one or more of the Company's products. Competitors of the
Company include, among others, providers of sophisticated database software,
originally designed and marketed primarily for use with mainframes and
minicomputers, including IBM, Informix Corporation, Ingres, Oracle and Sybase.
The Company also faces competition from providers of PC-based software products,
including Microsoft and Borland. These competitors offer database server
products and front-end tools designed for stand-alone PCs but may currently or
may in the future offer additional integrated PC client/server software. In
addition, the Company faces competition from providers of software specifically
developed for the PC client/server market, including front-end tools offered by
Sybase's Powersoft Division, Microsoft, and Forte, and connectivity software
competitors, such as IBI Systems, Inc. and Sybase's Micro DecisionWare Division.
The Company also faces potential competition from vendors of applications
development tools based on 4GLs or CASE technologies. With the emergence of the
World Wide Web as an important platform for application development and
deployment, additional competitors or potential competitors have emerged.
 
    Many of the Company's competitors or potential competitors have longer
operating histories and significantly greater financial, managerial, technical,
and marketing resources, as well as greater name recognition and a larger
installed base, than the Company. A variety of potential actions by any of these
 
                                       13
<PAGE>
                          CENTURA SOFTWARE CORPORATION
 
        NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
 
                                  (Unaudited)
 
competitors, including a reduction of product prices, increased promotion,
announcement or accelerated introduction of new or enhanced products or
features, acquisitions of software applications or technologies from third
parties, the formation of strategic alliances, product giveaways or product
bundling could have a material adverse effect on the business, operating results
and financial condition of the Company. The Company's products experienced
increased competition in 1995, 1996 and the first quarter of 1997, resulting in
loss of market share. Present or future competitors may be able to develop
products comparable or superior to those offered by the Company or adapt more
quickly to new technologies or evolving customer requirements. Such competition
has in the past and may again in the future result in price reductions and/or
loss of market share and has in the past and may again in the future have a
material adverse effect on the Company's business, operating results and
financial condition. In particular, while the Company is currently developing
additional product enhancements that it believes address customer requirements,
there can be no assurance that the development or introduction of these
additional product enhancements will be successfully completed on a timely basis
or that these product enhancements will achieve market acceptance. Accordingly,
there can be no assurance that the Company will be able to continue to compete
effectively in its markets, that competition will not intensify or that future
competition will not have a material adverse effect on the Company's business,
operating results and financial condition.
 
    MARKET ACCEPTANCE OF PC CLIENT/SERVER SYSTEMS.  Substantially all of the
Company's revenues have been derived from the licensing of software products for
PC client/server systems. Licenses of such products are expected to continue to
account for substantially all of the Company's revenues for the foreseeable
future. With the increasing focus on enterprise-wide systems, some customers may
opt for solutions that favor mainframe or mini-computer solutions. Accordingly,
some companies may abandon use of PC client/server systems, which could have a
material adverse effect on the Company's future success.
 
    COMPONENTIZED MARKETS.  The advent of so-called componentized software may
alter the way in which customers buy software. As specific software
functionality can be bundled into smaller units or objects rather than in broad,
highly functional products such as the Company's development tools, customers
may be less willing to buy such broad, highly functional products. If such a
trend continues, there can be no assurance that the Company will be able to
repackage and efficiently distribute its products in such componentized
packages. The costs and efforts necessary to package and distribute such
components are largely unknown. Failure of the Company to introduce
componentized products successfully and cost-effectively could have a material
adverse effect on the Company's business, operating results and financial
condition.
 
    INTERNET SOFTWARE MARKET.  The market for Internet software in general, and
the segments of such market addressed by the FORESITE products sold by the
Company on a non-exclusive basis pursuant to a Distributorship Agreement with
InfoSpinner, Inc. and the Company's other products are relatively new. The
future financial performance of the Company will depend in part on the continued
expansion of this market and these market segments and the growth in the demand
for FORESITE products and other products developed by the Company, as well as
increased acceptance of the Company's products by MIS professionals. There can
be no assurance that the Internet software market and the relevant segments of
the market will continue to grow, that the Company will be able to respond
effectively to the evolving requirements of the market and market segments, or
that MIS professionals will accept the Company's products. If the
 
                                       14
<PAGE>
                          CENTURA SOFTWARE CORPORATION
 
        NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
 
                                  (Unaudited)
 
Company is not successful in developing, marketing, localizing and selling
applications that gain commercial acceptance in these markets and market
segments on a timely basis, the Company's business, operating results and
financial condition could be materially and adversely affected.
 
    DEPENDENCE UPON DISTRIBUTION CHANNELS.  The Company relies on relationships
with value-added resellers and distributors for a substantial portion of its
sales and revenues. Some of the Company's resellers and distributors also offer
competing products. Most of the Company's resellers and distributors are not
subject to any minimum purchase requirements, can cease marketing the Company's
products at any time, and may from time to time be granted stock exchange or
rotation rights. The introduction of new and enhanced products may result in
higher product returns and exchanges. Any product returns or exchanges in excess
of recorded allowances could have a material adverse effect on the Company's
business, operating results and financial condition. The Company also maintains
strategic relationships with a number of vertical software vendors and other
technology companies for marketing or resale of the Company's products. Any
termination or significant disruption of the Company's relationship with any of
its resellers or distributors, or the failure by such parties to renew
agreements with the Company, could materially and adversely affect the Company's
business, operating results and financial condition. Since 1994 the Company has
reduced its resources devoted to North American corporate sales and also
decreased its expenditures on corporate and product marketing. The Company
expects to rely increasingly on third-party channels for sales of packaged
product while focusing its corporate sales efforts on larger opportunities.
Failure of the Company to successfully implement, support and manage the sales
strategies could have a material adverse effect on the Company.
 
    The distribution channels through which client/server software products are
sold have been characterized by rapid change, including consolidations and
financial difficulties of distributors, resellers and other marketing partners
including certain of the Company's current distributors. The bankruptcy,
deterioration in financial condition or other business difficulties of a
distributor or retailer could render the Company's accounts receivable from such
entity uncollectible, which could result in a material adverse effect on the
Company's business, operating results and financial condition. There can be no
assurance that distributors will continue to purchase the Company's products or
provide the Company's products with adequate promotional support. Failure of
distributors to do so could have a material and adverse effect on the Company's
business, operating results and financial condition.
 
    In a number of markets, including rapidly growing client/server markets such
as Japan, Korea, China/ Hong Kong and Brazil, the Company has entered into
quasi-exclusive multi-year agreements with independent companies that have also
licensed the use of the Company's name. These agreements are in place to
increase the Company's opportunities and penetration in such markets where the
rapid adoption of client/server technologies is anticipated. While the Company
believes that to date these agreements have increased the Company's penetration
in these markets, there can be no certainty that this performance will continue
nor that these relationships will remain in place. The Company's future cost of
maintaining its business in these markets could increase substantially if these
agreements are not renewed.
 
    DEPENDENCE ON THIRD PARTY ORGANIZATIONS.  The Company is increasingly
dependent on the efforts of third party "partners", including consultants,
system houses and software developers to implement, service and support the
Company's products. These third parties increasingly have opportunities to
select from a very broad range of products from the Company's competitors, many
of whom have greater resources and market acceptance than the Company. In order
to succeed, the Company must actively recruit and sustain relationships with
these third parties. There can be no assurance that the Company will be
successful in recruiting new partners or in sustaining its relationships with
its existing partners.
 
                                       15
<PAGE>
                          CENTURA SOFTWARE CORPORATION
 
        NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
 
                                  (Unaudited)
 
    INTERNATIONAL SALES AND OPERATIONS.  A key component of the Company's
strategy is continued expansion into international markets, and the Company
currently anticipates that international sales, particularly in new and emerging
markets, will continue to account for a significant percentage of total
revenues. The Company will need to retain effective distributors, and hire,
retain and motivate qualified personnel internationally to maintain and/or
expand its international presence. There can be no assurance that the Company
will be able to successfully market, sell, localize and deliver its products in
these international markets. In addition to the uncertainty as to the Company's
ability to sustain or expand its international presence, there are certain risks
inherent in doing business on an international level, such as unexpected changes
in regulatory requirements and government controls, problems and delays in
collecting accounts receivable, tariffs, export license requirements and other
trade barriers, difficulties in staffing and managing foreign operations, longer
payment cycles, political and economic instability, fluctuations in currency
exchange rates, seasonal reductions in business activity during summer months in
Europe and certain other parts of the world, restrictions on the export of
critical technology, and potentially adverse tax consequences, which could
adversely impact the success of international operations. Sales of products by
the Company currently are denominated principally in U.S. dollars. Accordingly,
any increase in the value of the U.S. dollar as compared to currencies in
overseas markets would increase the foreign currency-denominated cost of the
Company's products, which may negatively affect the Company's sales in those
markets. In addition, effective copyright and trade secret protection may be
limited or unavailable under the laws of certain foreign jurisdictions. There
can be no assurance that one or more of such factors will not have a material
adverse effect on the Company's international operations and, consequently, on
the Company's business, operating results and financial condition.
 
    PROPRIETARY RIGHTS.  The success and ability of the Company to compete is
dependent in part upon the Company's proprietary technology. While the Company
relies on trademark, trade secret and copyright laws to protect its technology,
the Company believes that factors such as the technological and creative skills
of its personnel, new product developments, frequent product enhancements, name
recognition and customer support are more essential to establishing and
maintaining a technology leadership position. The Company has one patent with
respect to its SQLWINDOWS and CENTURA products. The Company believes that the
ownership of patents is not presently a significant factor in its business and
that its success does not depend on the ownership of patents, but primarily on
the innovative skills, technical competence and marketing abilities of its
personnel. Also, there can be no assurance that others will not develop
technologies that are similar or superior to the Company's technology. The
source code for the Company's proprietary software is protected both as a trade
secret and as a copyrighted work. Despite these precautions, it may be possible
for a third party to copy or otherwise obtain and use their products or
technology without authorization, or to develop similar technology
independently. In addition, effective copyright and trade secret protection may
be unavailable or limited in certain foreign countries.
 
    The Company generally enters into confidentiality or license agreements with
its employees, consultants and vendors, and generally controls access to and
distribution of its software, documentation and other proprietary information.
Despite efforts to protect proprietary rights, unauthorized parties may attempt
to copy aspects of the Company's products or to obtain and use information that
is regarded as proprietary. Policing such unauthorized use is difficult. There
can be no assurance that the steps taken by the Company will prevent
misappropriation of the Company's technology or that such agreements will be
enforceable. In addition, litigation may be necessary in the future to enforce
intellectual property rights, to protect trade secrets or to determine the
validity and scope of the proprietary rights of others. Such litigation could
result in substantial costs and diversion of resources and could have a material
adverse effect on the Company's business, operating results and financial
condition.
 
                                       16
<PAGE>
                          CENTURA SOFTWARE CORPORATION
 
        NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
 
                                  (Unaudited)
 
    There can be no assurance that third parties will not claim infringement by
the Company with respect to current or future products, and the Company expects
that it will increasingly be subject to such claims as the number of products
and competitors in the client/server and Internet connectivity software market
grows and the functionality of such products overlaps with other industry
segments. In the past, the Company has received notices alleging that its
products infringe trademarks of third parties. The Company has historically
dealt with and will in the future continue to deal with such claims in the
ordinary course of business, evaluating the merits of each claim on an
individual basis. There are currently no material pending legal proceedings
against the Company regarding trademark infringement. Any such third party
claims, whether or not they are meritorious, could result in costly litigation
or require the Company to enter into royalty or licensing agreements. Such
royalty or license agreements, if required, may not be available on terms
acceptable to the Company, or at all. If the Company was found to have infringed
upon the proprietary rights of third parties, it could be required to pay
damages, cease sales of the infringing products and redesign or discontinue such
products, any of which could have a material adverse effect on the Company's
business, operating results and financial condition.
 
    MANAGEMENT OF POTENTIAL GROWTH; INTEGRATION OF POTENTIAL ACQUISITIONS.  In
recent years, the Company has experienced both expansion and contraction of its
operations each of which has placed significant demands on the Company's
administrative, operational and financial resources. To manage future growth, if
any, the Company must continue to improve its financial and management controls,
reporting systems and procedures on a timely basis and expand, train and manage
its work force. There can be no assurance that the Company will be able to
perform such actions successfully. The Company intends to continue to invest in
improving its financial systems and controls in connection with higher levels of
operations. Although the Company believes that its systems and controls are
adequate for the current level of operations, the Company anticipates that it
may need to add additional personnel and expand and upgrade its financial
systems to manage any future growth. The Company's failure to do so could have a
material adverse effect upon the Company's business, operating results and
financial condition. In the future, the Company may make acquisitions of
complementary companies, products or technologies. Managing acquired businesses
entails numerous operational and financial risks, including difficulties in
assimilating acquired operations, diversion of management's attention to other
business concerns, amortization of acquired intangible assets and potential loss
of key employees or customers of acquired operations. There can be no assurance
that the Company will be able to effectively achieve growth, or manage any such
growth, and failure to do so could have a material adverse effect on the
Company's operating results.
 
    LEGAL PROCEEDINGS.  There are currently no material pending legal
proceedings against the Company or any of its subsidiaries, other than ordinary
routine litigation incidental to the business of the Company. The Company
operates, however, in a complex and volatile industry in which disputes,
litigation, regulatory proceedings and other actions are a necessary risk of
doing business. There can be no assurance that the Company will not participate
in such legal proceedings and that the costs and charges will not have a
material adverse impact on the Company's future success.
 
                                       17
<PAGE>
                          CENTURA SOFTWARE CORPORATION
 
        NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
 
                                  (Unaudited)
 
PART II -- OTHER INFORMATION
 
ITEM 1. LEGAL PROCEEDINGS
 
    On May 2, 1994, a lawsuit was filed against the Company and certain of its
officers and directors, by a holder of the Company's common stock, on his own
behalf and purportedly on behalf of a class of others similarly situated. The
lawsuit was subsequently amended, and alleged that the Company made false and
misleading statements and failed to disclose material information relating to
existing business conditions and the Company's prospects and that officers and
directors violated the insider trading laws. The plaintiff was seeking damages
of an unstated amount.
 
    The Company reached a binding settlement agreement with plaintiffs' counsel
in this lawsuit, and gained court approval on September 30, 1996. Under the
terms of the agreement, the Company would provide $3 million and 1,875,000
shares to a fund to be distributed among the members of the plaintiff class. The
Company also agreed to supplement this payment with up to 625,000 additional
shares in the event the value of its common stock was less than an average price
of $6.00 per share during certain twenty day trading periods specified by the
Court. The Company's directors and officers' liability insurer paid
approximately $2 million of the cash contribution to the settlement fund. The
Company paid the remaining cash settlement during 1996. The 1995 financial
statements include $15.3 million in litigation expense for the agreement and
associated legal expenses. As of March 31, 1997, the Company has distributed all
common stock shares as required by the settlement agreement.
 
ITEM 2. CHANGES IN SECURITIES -- NOT APPLICABLE
 
ITEM 3. DEFAULTS IN SENIOR SECURITIES -- NOT APPLICABLE
 
ITEM 4. SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS
 
    The Company held a special meeting of shareholders on April 17, 1997, to
consider and vote on a proposal to approve and adopt the Agreement and Plan of
Reorganization dated January 6, 1997 (the "Merger Agreement") by and among the
Company, IS Acquisition Corporation, a wholly owned subsidiary of the Company,
and InfoSpinner, Inc. (the "InfoSpinner Acquisition"). The required quorum was
not achieved as of that date and the special meeting was adjourned until April
28, 1997. The special meeting of shareholders that was adjourned to April 28,
1997, was further adjourned until April 30, 1997. There were no broker non votes
at the meeting on April 30, 1997. Out of 13,783,960 shares of common stock
outstanding, votes received on the April 30, 1997 meeting date were as follows:
 
<TABLE>
<CAPTION>
                                                     % OF TOTAL
                                        NUMBER OF    OUTSTANDING
                                          VOTES        SHARES
                                        ----------  -------------
<S>                                     <C>         <C>
Yes                                      5,775,323        41.90
No                                       1,928,497        13.99
Abstained                                   12,038          .09
Not voted                                6,068,102        44.02
</TABLE>
 
ITEM 5. OTHER INFORMATION
 
    On May 27, 1997, Anthony Sun resigned from his position of director on the
Board of Directors with the Company.
 
                                       18
<PAGE>
                          CENTURA SOFTWARE CORPORATION
 
        NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
 
                                  (Unaudited)
 
    On July 1, 1997, Richard J. Heaps resigned from his position as Senior Vice
President, Business Development and General Counsel.
 
    On May 15, 1997, Helmut G. Wilke resigned from his position as Vice
President, European Operations. Michael Moore, previously Vice President for
ICON was promoted to Vice President, International Sales.
 
    On August 8, 1997, Michael K. Keddington resigned from his position as Vice
President, Marketing and North American Sales. Doug Domerque, previously
Director, North American Sales was promoted to Vice President, North American
Sales.
 
ITEM 6. EXHIBITS AND REPORTS ON FORM 8-K
 
    (a) Exhibits (numbered in accordance with Item 601 of Regulation S-K)
 
<TABLE>
<C>        <S>
    10.23  Factoring Agreement dated June 26, 1997, between Centura Software Corporation
           and Pacific Business Funding Corporation
 
    10.24  Warrant to Purchase Common Stock issued June 30, 1997 by Centura Software
           Corporation to Sand Hill Capital
 
    10.25  1997 Executive Retention Program*
 
       27  Financial Data Schedule
</TABLE>
 
    (b) Reports on Form 8-K -- Not Applicable
 
*  Management Compensatory Plan or Arrangement
 
                                       19
<PAGE>
                                   SIGNATURE
 
    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.
 
                                CENTURA SOFTWARE CORPORATION
 
Date: August 14, 1997           By:            /s/ RICHARD A. GELHAUS
                                     -----------------------------------------
                                                 Richard A. Gelhaus
                                        SENIOR VICE PRESIDENT OF FINANCE AND
                                        OPERATIONS, CHIEF FINANCIAL OFFICER
                                        (PRINCIPAL FINANCIAL AND ACCOUNTING
                                                      OFFICER)
 
                                       20