Exhibit 99.3 UNAUDITED PRO FORMA FINANCIAL STATEMENTS The following unaudited pro forma financial statements give effect to the acquisition by DSET Corporation of ISPSoft Inc. in a transaction to be accounted for as a purchase. The unaudited pro forma balance sheet is based on the individual balance sheets of DSET Corporation and ISPSoft Inc. incorporated by reference or appearing elsewhere in the joint proxy statement/prospectus contained in DSET's Registration Statement on Form S-4 (File No. 333-65898) and has been prepared to reflect the acquisition by DSET Corporation of ISPSoft Inc. as of September 30, 2001. The unaudited pro forma statement of operations is based on the individual statements of operations of DSET Corporation and of ISPSoft Inc. incorporated by reference or appearing elsewhere in the joint proxy statement/prospectus contained in DSET's Registration Statement on Form S-4 (File No. 333-65898) and combines the results of operations of DSET Corporation and ISPSoft Inc. (acquired by DSET Corporation on January 31, 2002) for the year ended December 31, 2000 and the nine months ended September 30, 2001 as if the acquisition occurred on January 1, 2000. On August 8, 2001 the Board of Directors of DSET declared a one-for-four reverse stock split to holders of record as of the close of trading on August 21, 2001. All references to number of shares and per share information in the unaudited pro forma financial statements have been adjusted to reflect the stock split on a retroactive basis. DSET expects to incur merger-related pre-tax charges covering the costs of the merger principally in the quarter in which the merger is consummated. Such pre-tax charges, which are currently estimated to be in the range of $1.7 million, will primarily consist of the direct costs of the merger, including fees to financial advisors, legal counsel and independent accountants and printing and other fees and expenses relating to holding a meeting of shareholders and preparing the joint proxy statement/prospectus contained in DSET's Registration Statement on Form S-4 (File No. 333-65898). Moreover, additional unanticipated expenses may be incurred in connection with this transaction. The unaudited pro forma information is presented for illustrative purposes only and is not necessarily indicative of the financial position or operating results that would have been achieved if the merger had been consummated as of the beginning of the periods presented, nor are they necessarily indicative of future operating results or financial position of DSET. No material pro forma adjustments are required to conform the financial reporting policies of DSET and ISPSoft for the periods presented. However, on a prospective basis, DSET will review the accounting practices of ISPSoft to ensure consistency with those of DSET. The pro forma financial information does not give effect to any costs savings, which may result from the integration of DSET and ISPSoft operations, nor are there any tax benefits that may result from operating losses of ISPSoft. DSET CORPORATION AND SUBSIDIARIES UNAUDITED PRO FORMA BALANCE SHEET As of September 30, 2001 Historical ProForma ----------------------------- -------------------------------- DSET(1) ISPSoft(1) Adjustments(3) Combined ------------- --------------- ---------------- ------------ ASSETS Current assets: Cash and cash equivalents................ $ 17,294,360 $ 133,365 $(3,150,000)(A) $ 14,277,725 Marketable securities.................... 1,071,011 -- -- 1,071,011 Accounts receivable...................... 839,341 -- -- 839,341 Income Taxes receivable.................. 396,851 -- -- 396,851 Prepaid licenses......................... 923,685 -- -- 923,685 Prepaid expenses and other current assets................................. 836,625 22,548 (300,000)(C) 559,173 ------------ ----------- ------------ ------------- Total current assets................. 21,361,873 155,913 (2,650,000) 18,867,786 Acquired technology, net................. -- -- 4,500,000(B) 4,500,000 Fixed assets, net........................ 2,421,391 348,902 -- 2,770,293 Goodwill, net............................ 28,507 -- 10,627,873(B) 10,656,380 Loans to ISPSoft Inc..................... 2,250,000 -- (2,250,000)(F) -- Other assets, net........................ 444,642 50,262 500,000(B) 994,904 ------------ ----------- ------------ ------------- Total assets......................... $ 26,506,413 $ 555,077 $ 9,927,873 $ 36,989,363 ============ =========== ============ ============= LIABILITIES AND SHAREHOLDERS' EQUITY Current liabilities: Accounts payable and accrued expenses............................... $ 3,790,827 $ 511,639 $ 1,400,000(C) $ -- -- -- 500,000(D) 6,202,466 Accrued restructuring expenses........... 2,464,782 -- -- 2,464,782 Deferred revenues........................ 3,030,343 -- -- 3,030,343 Dividend payable......................... -- 482,955 (482,955)(E) -- Current portion of notes payable......... 484,466 3,575,000 (2,250,000)(F) 1,809,466 Current portion of capital lease obligation............................. 138,367 6,483 -- 144,850 ------------ ----------- ------------ ------------- Total current liabilities............ 9,908,785 4,576,077 (832,955) 13,651,907 ------------ ----------- ------------ ------------- Deferred rent............................... 538,613 -- -- 538,613 Capital lease obligation.................... 318,587 5,565 -- 324,152 ------------ ----------- ------------ ------------- Total liabilities.................... 10,765,985 4,581,642 (832,955) 14,514,672 ------------ ----------- ------------ ------------- Redeemable preferred stock.................. -- 4,000,000 (4,000,000)(G) -- Commitments and contingencies Shareholders' equity: Preferred stock.......................... -- 1,200,000 (1,200,000)(G) -- Common stock............................. 50,146,240 1,256,717 (1,256,717)(G) -- -- -- 6,378,076(H) -- -- -- 675,187(I) 57,199,503 Note receivable.......................... -- (135,000) -- (135,000) Deferred stock compensation.............. (13,631) (458,095) (184,000)(B) -- 458,095(G) (197,631) Accumulated deficit...................... (34,208,959) (8,890,187) 8,890,187(G) (34,208,959) Accumulated other comprehensive income................................. 7,701 -- -- 7,701 less: Treasury stock..................... (190,923) (1,000,000) 1,000,000(G) (190,923) ------------ ----------- ------------ ------------- Total shareholders' equity........... 15,740,428 (8,026,565) 14,760,828 22,474,691 ------------ ----------- ------------ ------------- Total liabilities and shareholders' equity............... $ 26,506,413 $ 555,077 $ 9,927,873 $ 36,989,363 ============ =========== ============ ============= See notes to Unaudited Pro Forma Financial Statements 2 DSET CORPORATION AND SUBSIDIARIES UNAUDITED PRO FORMA STATEMENT OF OPERATIONS For the Nine Months Ended September 30, 2001 Historical ProForma ------------------------------ ------------------------------- DSET(1) ISPSoft(1) Adjustments(4) Combined ------------ ----------- -------------- ------------ Revenues: License revenues..................... $ 2,337,019 $ -- $ -- $ 2,337,019 Service revenues..................... 5,709,521 -- -- 5,709,521 ------------ ----------- --------- ------------ Total revenues................... 8,046,540 -- -- 8,046,540 ------------ ----------- --------- ------------ Cost of revenues: License revenues..................... 1,156,874 -- -- 1,156,874 Service revenues..................... 4,638,762 -- -- 4,638,762 ------------ ----------- --------- ------------ Total cost of revenues........... 5,795,636 -- -- 5,795,636 ------------ ----------- --------- ------------ Gross profit..................... 2,250,904 -- -- 2,250,904 ------------ ----------- --------- ------------ Operating expenses: Sales and marketing.................. 5,951,936 -- -- 5,951,936 Research and product development..... 8,595,005 2,319,176 19,000(K) 10,933,181 General and administrative........... 4,383,867 2,017,068 100,000(J) -- -- -- 19,000(K) 6,519,935 Bad debt expense..................... 986,708 -- -- 986,708 Amortization of goodwill and other intangibles........................ 273,581 -- -- 273,581 Restructuring and other charges...... 14,789,014 -- -- 14,789,014 ------------ ----------- --------- ------------ Total operating expenses......... 34,980,111 4,336,244 138,000 39,454,355 ------------ ----------- --------- ------------ Operating loss................... (32,729,207) (4,336,244) (138,000) (37,203,451) Interest expense and other income (expense)............................ (26,043) (116,924) -- (142,967) Interest income and realized gains and losses on marketable securities........................... 1,363,045 14,647 (167,000)(L) 1,210,692 ------------ ----------- --------- ------------ Loss before income taxes................ (31,392,205) (4,438,521) (305,000) (36,135,726) Provision for income taxes.............. 252,200 -- -- 252,200 ------------ ----------- --------- ------------ Net loss................................ $(31,644,405) $(4,438,521) $(305,000) $(36,387,926) ============ =========== ========= ============ Dividends on Series B preferred stock... -- (256,410) 256,410(M) -- ------------ ----------- --------- ------------ Net loss applicable to common stockholders......................... $(31,644,405) $(4,694,931) $ (48,590) $(36,387,926) ============ =========== ========= ============ Net loss per common share-- basic and diluted.............................. $ (10.90) $ (7.02) ============ ============ Weighted average number of common shares and common equivalent shares outstanding................... 2,903,228 5,184,372 ============ ============ See notes to Unaudited Pro Forma Financial Statements 3 DSET CORPORATION UNAUDITED PRO FORMA STATEMENT OF OPERATIONS For the Year Ended December 31, 2000 Historical ProForma ------------------------------ ------------------------------- DSET(1) ISPSoft(1) Adjustments(4) Combined ------------ ----------- -------------- ------------- Revenues: License revenues.............. $ 32,850,731 $ -- $ -- $ 32,850,731 Service revenues.............. 14,191,535 -- -- 14,191,535 ------------ ----------- --------- ------------ Total revenues............ 47,042,266 -- -- 47,042,266 ------------ ----------- --------- ------------ Cost of revenues: License revenues.............. 3,990,728 -- -- 3,990,728 Service revenues.............. 11,131,206 -- -- 11,131,206 ------------ ----------- --------- ------------ Total cost of revenues.... 15,121,934 -- -- 15,121,934 ------------ ----------- --------- ------------ Gross profit.................. 31,920,332 -- -- 31,920,332 ------------ ----------- --------- ------------ Operating expenses: Sales and marketing........... 12,128,855 -- -- 12,128,855 Research and product development................. 18,467,309 1,704,631 57,000(K) 20,228,940 General and administrative.... 6,925,389 1,294,543 400,000(J) -- -- -- 57,000(K) 8,676,932 Bad debt expense and other charges..................... 13,378,237 -- -- 13,378,237 Amortization of goodwill and other intangibles........... 418,736 -- -- 418,736 Restructuring and other charges..................... 2,248,100 -- -- 2,248,100 ------------ ----------- --------- ------------ Total operating expenses.. 53,566,626 2,999,174 514,000 57,079,800 ------------ ----------- --------- ------------ Operating loss............ (21,646,294) (2,999,174) (514,000) (25,159,468) (Interest expense and other income (expense).............. (182,857) -- -- (182,857) Interest income and realized gains and losses on marketable securities......... 2,114,159 87,004 (223,000)(L) 1,978,163 ------------ ----------- --------- ------------ Loss before income taxes......... (19,714,992) (2,912,170) (737,000) (23,364,162) (Benefit) from income taxes...... (902,631) -- -- (902,631) ------------ ----------- --------- ------------ Net loss......................... $(18,812,361) $(2,912,170) $(737,000) $(22,461,531) ============ =========== ========= ============ Dividends on Series B preferred stock......................... -- (226,545) 226,545(M) -- ------------ ----------- --------- ------------ Net loss applicable to common stockholders.................. $(18,812,361) $(3,138,715) $(510,455) $(22,461,531) ============ =========== ========= ============ Net loss per common share-- basic and diluted............. $ (6.61) $ (4.38) ============ ============ Weighted average number of common shares and common equivalent shares outstanding.. 2,846,959 5,128,103 ============ ============ See notes to Unaudited Pro Forma Financial Statements 4 NOTES TO UNAUDITED PRO FORMA FINANCIAL STATEMENTS 1. These columns reflect the historical financial position and results of operations of DSET and ISPSoft. 2. For the purpose of these pro forma financial statements, equity consideration has been calculated based on Emerging Issues Task Force ("EITF") 99-12, "Accounting for Formula Arrangements under EITF 95-19". For this calculation, DSET used the average market price for a few days before and after the merger was agreed to and announced, June 26, 2001. Common shares of ISPSoft at September 30, 2001 (including the preferred stock 24,847,073 on an as-converted to common stock basis).................................. Common stock exchange ratio per share......................................... 0.086844 --------------- Equivalent DSET common shares................................................. 2,157,837 DSET common stock to be issued to holders of Series B Preferred Stock......... 123,306 --------------- Total DSET common shares to be issued.................................. 2,281,143 DSET common stock share price based on the average closing price based on a few days before and after the merger was agreed to and announced........... $ 2.796 --------------- Sub-total-- DSET common stock equity consideration..................... $ 6,378,076 ISPSoft common stock options to be replaced by DSET stock options............. 2,781,010 DSET common stock exchange ratio per share.................................... .086844 --------------- DSET common stock options resulting from the conversion of ISP common stock options in the merger...................................................... 241,483 Estimated fair value per option............................................... $ 2.796 --------------- Sub-total-- DSET common stock options equity consideration............. $ 675,187 Cash consideration............................................................ $ 1,000,000 Liability for earn-out payments............................................... $ 500,000 Estimated professional fees................................................... $ 1,700,000 --------------- Sub-total-- Estimated payments......................................... $ 10,253,263 Net liabilities of ISPSoft.................................................... $ 2,083,610 Additional liabilities through consummation date.............................. $ 2,150,000 Assumption of Lucent Promissory Note.......................................... $ 400,000 Assumption of Signal Lake Promissory Note..................................... $ 400,000 Assumption of other Notes..................................................... $ 525,000 --------------- Sub-total-- Net liabilities of ISPSoft................................. $ 5,558,610 Total Consideration.................................................... $ 15,811,873 Pro forma adjustments relating to: Acquired technology........................................................... $ (4,500,000) Covenant not to compete....................................................... $ (500,000) Deferred stock compensation................................................... $ (184,000) --------------- Preliminary goodwill.......................................................... $ 10,627,873 --------------- Upon closing of the merger, the total consideration will be allocated to the specific identifiable tangible and intangible assets and liabilities of ISPSoft after the completion of third-party appraisals during the allocation period specified by Statement of Financial Accounting Standards No. 38, "Accounting for Preacquisition Contingencies of Purchased Enterprises." A preliminary allocation of the purchase price has been made to certain identifiable tangible and intangible assets based on information available to the management of DSET at the date of the preparation of the accompanying pro forma financial statements. The final purchase accounting allocation may also include certain charges to net income relating to acquired technology. 5 3. The following adjustments were made to the balance sheet as of September 30, 2001 to give effect to the transaction: A) Cash consideration to be paid by DSET. B) To record the acquired technology, goodwill, covenant not to compete and deferred stock compensation. C) Estimated professional fees to financial advisors, legal counsel and accountants totaling $1.7 million of which $300,000 has been incurred through September 30, 2001 and recorded in prepaid expenses and other current assets. D) Additional consideration in cash or shares expected to be paid based on future sales from ISPSoft products. In accordance with EITF 00-19, this is recorded as a liability due to the fact that the number of shares to be issued as of the announcement date is unknown. E) Elimination of ISPSoft dividends accrued on Series B Preferred Stock as these amounts will be converted to DSET common stock. F) Elimination of amounts advanced by DSET to ISPSoft. G) Elimination of the historical equity accounts of ISPSoft. H) Total common stock equity consideration. I) Total common stock options consideration. 4. The following adjustments were made to the income statement for the nine-months ended September 30, 2001 and for the year ended December 31, 2000 to give effect to the transaction: J) Amortization of the covenant not to compete is based on the contractual useful life of fifteen months. K) Amortization of deferred stock compensation is based upon the vesting schedule of ISPSoft stock options that will be converted to DSET stock options in the merger. L) Reduction of interest income for the cash portion of the purchase price, assuming an effective interest rate of 6% per annum, which represents the average short-term interest earned on the Company's investment balances. M) Elimination of ISPSoft preferred stock dividends. 5. DSET has the option of issuing more shares to ISPSoft in order to qualify for a tax-free reorganization credit. This determination will be made at the consummation of the merger. In addition, DSET has the option of settling the earn-out in shares (as opposed to cash settlement). This determination will be made if and when such earn-out obligation is incurred. As a result, the above pro forma EPS calculation may decrease based on the number of additional shares that DSET issues to the shareholders of ISPSoft. 6