Exhibit 99.4 VASCO DATA SECURITY INTERNATIONAL, INC. UNAUDITED CONSOLIDATED PRO FORMA FINANCIAL STATEMENTS (Amounts in thousands, except per share amounts) The Unaudited Consolidated Pro Forma Statement of Operations combines the historical consolidated statements of operations of VASCO Data Security International, Inc. ("VASCO") and AOS-Hagenuk B.V. ("A.O.S.") as if the merger had occurred on January 1, 2004. The Unaudited Consolidated Pro Forma Balance Sheet combines the historical consolidated balance sheet of VASCO and the historical consolidated balance sheet of A.O.S., giving effect to the merger as if it had occurred on December 31, 2004. VASCO has adjusted the historical consolidated financial information to account for pro forma events that are (1) directly attributable to the merger, (2) factually supportable, and (3) with respect to the statements of operations, expected to have a continuing impact on the combined results. On February 4, 2005, pursuant to a Share Sale and Purchase Agreement (the "Purchase Agreement") by and among VASCO, A.O.S. Holding B.V. ("Seller"), Filipan Beheer B.V. ("Guarantor"), Mr. Mladen Filipan ("Surety") and Pijnenburg Beheer N.V. ("Guarantor"), VASCO completed its acquisition of 100% of the issued share capital of A.O.S., a private limited liability company organized and existing under the laws of the Netherlands. The base purchase price paid to the Seller for the acquisition was EUR 5,000, of which EUR 3,750 was paid in cash ("Consideration Cash") and the remainder of which was paid in VASCO common stock ("Consideration Shares"). The Consideration Shares will be held in escrow for the benefit of the Seller for a period of twelve (12) months, pursuant to the terms of an Escrow Agreement. Twelve (12) months after the Closing Date and five days prior to the expiration of the Escrow Agreement (the "Re-measurement Date") the value of the Consideration Shares will be re-measured as of the Re-measurement Date by reference to the average closing price of VASCO's common stock during a period of thirty (30) trading days prior to the Re-measurement Date less five percent (5%) (the "Final Value'). If: (a) the Final Value is 90% or greater, then there shall be no adjustment of the amount of Closing Consideration Shares; (b) the Final Value is 80% or greater but less than 90% of the initial value then the amount of Consideration Shares shall be increased to the number of Consideration Shares multiplied by a fraction consisting of the initial value divided by the Final Value; (c) the Final Value is less than 80% of the initial value then the amount of Consideration Shares shall be increased to the number of Closing Shares multiplied by 1.25. Six (6) months after closing, the Seller shall have the right to pay EUR 1,250 into the escrow account against release of the Consideration Shares, pursuant to the terms set forth in the Purchase Agreement. In addition to the base purchase price, a variable amount related to the gross profits collected on the sales of certain equipment will be paid to the Seller over a period of two (2) years following the closing, pursuant to the terms of the Purchase Agreement. The following Unaudited Consolidated Pro Forma financial information gives effect to VASCO's acquisition of A.O.S. as if the transaction had occurred on December 31, 2004 for purposes of the Unaudited Consolidated Pro Forma Balance Sheet, and as of January 1, 2004 for purposes of the Unaudited Consolidated Pro Forma Statement of Operations. The acquisition of A.O.S. will be recorded using the purchase method of accounting. The following unaudited consolidated pro forma financial statements are based on the historical statements of VASCO and A.O.S. during the periods presented, adjusted to give effect to the acquisition. The total purchase price of A.O.S. has been allocated on a preliminary basis to identifiable assets acquired and liabilities assumed based on valuation procedures performed to date. This allocation is subject to change pending a final analysis of the total purchase price paid, including direct costs of the acquisition, and the estimated fair value of the assets acquired and liabilities assumed. However, the Company does not believe the impact of these changes will be material. The pro forma adjustments are described in the accompanying notes and are based upon available information and various assumptions that management believes are reasonable. These adjustments give effect to events directly attributable to the transaction and do not reflect any restructuring or integration costs, or any potential cost savings or other synergies that management expects to realize as a result of the transaction. The accompanying unaudited pro forma consolidated financial information should be read in conjunction with the historical financial statements and the related notes thereto of VASCO, included in its Annual Report on Form 10-K, and the historical financial statements and the related notes thereto of A.O.S., included elsewhere in this Current Report on Form 8-K/A. The unaudited pro forma combined financial information is not necessarily indicative of the operating results or financial position that would have occurred if the transaction had been consummated on the dates indicated, nor is it necessarily indicative of the future financial position and the results of operations of VASCO. VASCO DATA SECURITY INTERNATIONAL, INC. UNAUDITED CONSOLIDATED PRO FORMA BALANCE SHEET AS OF DECEMBER 31, 2004 (IN THOUSANDS) VASCO Data Security AOS- Pro Forma Pro Forma International, Inc. Hagenuk B.V. Adjustments Notes Consolidated ------------------- ------------ ----------- ----- ------------ ASSETS Current assets: Cash $ 8,138 $ 9418 (4,374) 1 $ 4,705 Restricted cash 82 -- 82 Accounts receivable, net 5,965 187 6,152 Inventories, net 1,346 80 1,426 Prepaid expenses 791 204 995 Deferred income taxes 23 -- 23 Foreign sales tax receivable 313 -- 313 Other current assets 464 619 (616) 1 467 -------- ------ -------- Total current assets 17,122 2,031 14,163 Property and equipment Furniture and fixtures 1,683 -- 1,683 Office equipment 2,008 395 (395) 3 2,196 188 3 -------- ------ -------- 3,691 395 3,879 Accumulated depreciation (2,853) (206) 206 3 (2,853) -------- ------ -------- Net property and equipment 838 188 1,025 Intangible assets, net 1,134 735 (735) 2 1,134 367 2 367 Goodwill, net 250 -- 5,997 5 6,247 Note receivable and investment in SSI 760 -- 760 Other assets 146 -- 146 -------- ------ -------- TOTAL ASSETS $ 20,250 $ 2,955 $ 23,843 ======== ====== ======== LIABILITIES AND STOCKHOLDERS' EQUITY Current liabilities: Accounts payable $ 3,065 45 $ 3,110 Deferred revenue 620 1,933 (862) 4 1,691 Accrued wages and payroll taxes 1,602 -- 1,602 Income taxes payable 435 31 466 Other accrued expenses 1,345 170 150 1 1,665 -------- ------ -------- Total current liabilities 7,067 2,178 8,533 Deferred warranty revenues 152 -- 152 Stockholders' equity : Series D Convertible Preferred Stock 1,504 -- 1,504 Common stock 34 25 (25) 6 34 Additional paid-in capital 51,825 682 (682) 6 53,953 2,128 1 Retained earnings (accumulated deficit) (40,672) 71 (71) 6 (40,672) Accumulated other comprehensive income - cumulative translation adjustment 340 -- 340 -------- ------ -------- Total stockholders' equity 13,031 777 15,158 -------- ------ -------- TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY $ 20,250 $ 2,955 $ 23,843 ======== ====== ======== See accompanying notes to the unaudited consolidated pro forma financial statements. VASCO DATA SECURITY INTERNATIONAL, INC. UNAUDITED CONSOLIDATED PRO FORMA STATEMENT OF OPERATIONS FOR THE YEAR ENDED DECEMBER 31, 2004 (IN THOUSANDS EXCEPT PER SHARE DATA) VASCO Data Security International AOS-Hagenuk Pro Forma Pro Forma Inc. B.V. Adjustments Notes Consolidated ------------ ----------- ----------- ----- ------------ Net revenues $ 29,893 $ 5,418 $ (862) 7 $ 34,449 Cost of goods sold 9,184 3,194 12,378 -------- -------- -------- -------- Gross profit 20,709 2,224 (862) 22,071 -------- -------- -------- -------- Operating costs: Sales and marketing 9,160 1,007 10,167 Research and development 2,835 840 3,675 General and administrative 3,194 217 367 8 3,778 Restructuring expenses (32) - (32) -------- -------- -------- -------- Total operating costs 15,157 2,063 367 17,587 -------- -------- -------- -------- Operating income from continuing operations 5,552 160 (1,229) 4,483 Interest income (expense), net 120 (2) (87) 9 31 Other income (expense), net (539) - (539) -------- -------- -------- -------- Income before income taxes 5,133 158 (1,316) 3,975 Provision for income taxes 1,880 30 (30) 10 1,880 -------- -------- -------- -------- Net income from continuing operations 3,253 128 (1,286) 2,095 Preferred stock accretion and dividends (232) - (232) -------- -------- -------- -------- Net income available to common shareholders $ 3,021 $ 128 $ (1,286) $ 1,863 ======== ======== ======== ======== Basic net income per common share: $ 0.09 $ 0.06 ======== ======== Diluted net income per common share: $ 0.09 $ 0.06 ======== ======== Weighted average common shares outstanding: Basic 32,216 263 32,479 ======== ======== ======== Dilutive 33,128 263 33,391 ======== ======== ======== See accompanying notes to the unaudited consolidated pro forma financial statements. VASCO DATA SECURITY INTERNATIONAL, INC. NOTES TO PRO FORMA CONSOLIDATED FINANCIAL STATEMENTS (IN THOUSANDS) NOTE 1 ACQUISITION OF AOS-HAGENUK B.V. In accordance with the Purchase Agreement, on February 4, 2005, VASCO acquired all of the outstanding shares of AOS-Hagenuk B.V. ("AOS"). The aggregate purchase price was $7,268, consisting primarily of $4,374 cash, 263 shares of common stock valued at approximately $2,128, the assumed liability due to AOS of $616 and estimated direct costs of the acquisition of $150. As of April 20, 2005, $105 of the direct costs have been paid. The fair value of the common stock issued was determined based on the average market price of the Company's common stock over the period including five days before and after the terms of the Purchase Agreement was signed and closed. In accordance with the Statement of Financial Accounting Standards No. 141," Business Combinations", the Company allocated the consideration given to the assets acquired and the liabilities assumed based on their estimated fair values at date of acquisition. The following table summarizes the estimated fair value of the assets acquired and the liabilities assumed at December 31, 2004: Cash $ 941 Accounts receivable, net 187 Inventory 80 Prepaid expenses 204 Other current assets 619 Property and equipment, net 188 Intangible asset 367 Goodwill 5,997 ------ Total assets acquired 8,583 ------ Accounts payable 45 Deferred revenue 1,071 Income taxes payable 31 Accrued expenses 170 ------ Total liabiltites assumed 1,317 ------ ------ Net assets acquired $7,266 ====== The balance sheet of AOS was translated to US dollars using the historical EURO to US Dollar rate on December 31, 2004. The statement of operations of AOS was translated using the average historical EURO to US Dollar rate for the year 2004. NOTE 2 - INTANGIBLE ASSETS An intangible asset of $367 related to customer purchase commitments was recorded at the date of acquisition at its estimated fair value. This intangible asset will be amortized as the goods are shipped and is expected to be fully amortized within a twelve-month period. The intangible asset recorded by AOS of $735 was estimated to have a fair value of $0 at the date of acquisition as its future realization was uncertain. The effect was to increase goodwill recorded. VASCO DATA SECURITY INTERNATIONAL, INC. NOTES TO PRO FORMA CONSOLIDATED FINANCIAL STATEMENTS - (CONTINUED) (IN THOUSANDS) NOTE 3 - OFFICE EQUIPMENT The office equipment was recorded at its net book value at the date of acquisition which approximates the fair value of that equipment. Historical accumulated depreciation was eliminated. NOTE 4 - DEFERRED REVENUE The deferred revenue assumed from AOS was recorded at its estimated fair value of $1,071 at the date of acquisition. NOTE 5 - GOODWILL Goodwill represents the amount of consideration paid not specifically allocable to purchased assets or assumed liabilities. NOTE 6 - EQUITY The historical value of AOS' common stock, retained earnings and additional paid-in capital were eliminated at the date of acquisition. NOTE 7 - REVENUE Adjustment to record a reduction in revenue related to the difference between the deferred revenue liability recorded by AOS and the assumed deferred liability recorded by VASCO in the purchase. NOTE 8 - AMORTIZATION OF INTANGIBLE ASSET Adjustment to record the amortization expense of the acquired intangible asset recorded in the purchase. NOTE 9 - INTEREST INCOME Adjustment to reduce interest income of $87 as a result of the cash paid for the purchase of AOS. NOTE 10 - INCOME TAXES Adjustment to eliminate the AOS tax provision as a result of the pro forma adjustments. NOTE 11 - ADJUSTMENT TO THE VALUE OF THE PURCHASE Twelve (12) months after the Closing Date and five days prior to the expiration of the Escrow Agreement (the "Re-measurement Date") the value of the Consideration Shares, 263, will be subject to a re-measurement, providing the Seller has not paid Euro 1,250 into the escrow account against the release of the Consideration shares. The effect of this potential re-measurement will be to adjust goodwill and additional paid-in capital. NOTE 12 - EARN OUT CONSIDERATION In addition to the base purchase price, a variable amount related to the gross profits collected on the sales of certain equipment will be paid to the Seller over a period of two years following the Closing. The Company will record any earn out payments as commission expense in the period earned.