EXHIBIT 99.1 INDEX TO FINANCIAL STATEMENTS PAGE ---- Input/Output, Inc. Employee Stock Purchase Plan Independent Auditors' Report . . . . . . . . . . . . . . . . . . F-2 Statement of Net Assets Available for Plan Benefits as of June 30, 1997. . . . . . . . . . . . . . . . . . . . . . . F-3 Statement of Changes in Net Assets Available for Plan Benefits for the period from April 1, 1997 (date operations commenced) through June 30, 1997. . . . . . . . . . . . . . . . . . . . . . F-3 Notes to Financial Statements. . . . . . . . . . . . . . . . . . F-4 F-1 INDEPENDENT AUDITORS' REPORT Compensation Committee of the Board of Directors Input/Output, Inc. Employee Stock Purchase Plan: We have audited the accompanying statement of net assets available for plan benefits of the Input/Output, Inc. Employee Stock Purchase Plan as of June 30, 1997 and the related statement of changes in net assets available for plan benefits for the period from April 1, 1997 (date operations commenced) through June 30, 1997. These financial statements are the responsibility of the Plan's management. Our responsibility is to express an opinion on these financial statements based on our audit. We conducted our audit in accordance with generally accepted auditing standards. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement. An audit includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements. An audit also includes assessing the accounting principles used and significant estimates made by management, as well as evaluating the overall financial statement presentation. We believe that our audit provides a reasonable basis for our opinion. In our opinion, the financial statements referred to above present fairly, in all material respects, the net assets available for plan benefits of the Input/Output, Inc. Employee Stock Purchase Plan as of June 30, 1997 and the changes in net assets available for plan benefits for the period from April 1, 1997 (date operations commenced) through June 30, 1997 in conformity with generally accepted accounting principles. /s/ KPMG Peat Marwick LLP Houston, Texas October 24, 1997 F-2 INPUT/OUTPUT, INC. EMPLOYEE STOCK PURCHASE PLAN STATEMENT OF NET ASSETS AVAILABLE FOR PLAN BENEFITS June 30, 1997 ------------- ASSETS Cash . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . $250,692 -------- Net Assets available for plan benefits . . . . . . . . . . . . . . $250,692 -------- -------- INPUT/OUTPUT, INC. EMPLOYEE STOCK PURCHASE PLAN STATEMENT OF CHANGES IN NET ASSETS AVAILABLE FOR PLAN BENEFITS Period from April 1, 1997 (date operations commenced) through June 30, 1997 ------------- Additions to assets: Employee contributions . . . . . . . . . . . . . . . . . . . . $250,692 -------- Total additions. . . . . . . . . . . . . . . . . . . . . . . . . . $250,692 -------- -------- Net Assets available for plan benefits: At beginning of period . . . . . . . . . . . . . . . . . . . . -- -------- At end of period . . . . . . . . . . . . . . . . . . . . . . . $250,692 -------- -------- See accompanying notes to financial statements. F-3 INPUT/OUTPUT, INC. EMPLOYEE STOCK PURCHASE PLAN NOTES TO FINANCIAL STATEMENTS (1) DESCRIPTION OF PLAN: The following brief description of the Input/Output, Inc. Employee Stock Purchase Plan ("the Purchase Plan") is provided for general information purposes only. Participants should refer to the Purchase Plan for complete information regarding the Purchase Plan's definitions, benefits, eligibility and other matters. (a) GENERAL The Purchase Plan was approved by the Input/Output, Inc. (the Company) Board of Directors in March, 1997 and commenced on April 1, 1997. The Stockholders of the Company approved the Purchase Plan on September 29, 1997. There are 1.5 million shares of Common Stock of the Company reserved for issuance under the Purchase Plan. The Purchase Plan is intended to advance the long-term interests of the Company by encouraging the acquisition and ownership of capital stock of the Company by employees of the Company. The Purchase Plan is intended to qualify as an "employee stock purchase plan" under Section 423 of the Internal Revenue Code (the Code) of 1986, as amended. (b) ELIGIBILITY An "eligible employee" under the Purchase Plan is a person who (i) is actively employed (ii) is actively employed on the first day of the calendar month prior to an offering period and (iii) is not excluded pursuant to the following sentence. The following persons shall not be eligible: (1) employees whose customary employment is twenty (20) hours or less per week, (2) employees who have not been employed for at least six months prior to the beginning of an Offering Period, and (3) an employee who owns 5% or more of the Company's Common Stock. (c) CONTRIBUTIONS The Purchase Plan allows all eligible employees to authorize payroll deductions at the rate of 1% up to 15% of base compensation to be applied toward the purchase of Input/Output, Inc. Common Stock. The Purchase Price of the Common Stock will be the lesser of 85% of the closing price on the first day of the applicable Offering Period or most recently preceding trading day or 85% of the closing price on the last day of the Offering Period or most recently preceding trading day. Under the Purchase Plan, separate six-month offering periods commence on April 1st and October 1st of each year. (d) PARTICIPANT ACCOUNTS A Purchase Plan account in the name of each participant will be maintained. On each pay day a participant's payroll deduction shall be withheld and credited to such account. As of the last day of the Offering Period the amount then in the participant's account shall be applied to the purchase of the Company's Common Stock. The purchase of stock will be made solely from amounts credited to the participant's plan account. The total number of employees participating in the purchase plan as of June 30, 1997 was 378. F-4 INPUT/OUTPUT, INC. EMPLOYEE STOCK PURCHASE PLAN NOTES TO FINANCIAL STATEMENTS - (CONTINUED) (e) DISTRIBUTIONS A participant may request in writing the sale of all or part of the shares of Common Stock in such participant's plan account. The shares will be sold within five business days, and the Purchase Plan will deliver to the participant the proceeds of the sale, less a handling charge, brokerage commissions, and other costs of sale. (f) ADMINISTRATIVE EXPENSES Costs of administering the Purchase Plan are borne by the Company. (2) SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES The financial statements of the Plan are presented on the accrual basis of accounting. Investments in Company Stock are reported at fair value determined by reference to quoted market prices. Net realized gains and losses on disposition of investments are reported on the revalued cost method. Revalued cost is the fair value of the assets at the beginning of the Plan year (date operations commenced) or historical cost if the investment was acquired since the beginning of the year (date operations commenced). Any unrealized appreciation or depreciation is recognized as a gain or loss currently in the statement of changes in net assets available for benefits. (3) FEDERAL INCOME TAXES The Purchase Plan and the right of participants to make purchases thereunder are intended to qualify under the provision of Section 423 of the Code. Under those provisions, no income will be taxable to a participant at the time of the grant of the option or purchase of shares for federal income tax purposes. However, a participant may become liable for tax upon dispositions of shares acquired, and the tax consequences will depend on how long a participant has held the shares prior to disposition. (4) PLAN TERMINATION The Purchase Plan will terminate (a) on the date all shares authorized for sale under the Purchase Plan have been purchased or (b) at any time, at the discretion of the Board of Directors of the Company; provided however, that no termination shall affect outstanding offerings of shares. Upon termination of the Purchase Plan and the exercise or lapse of all Offering rights thereunder all remaining amounts credited to the Purchase Plan accounts of participants shall be returned to such participants in cash without interest. At this time, there is no intention to terminate the Purchase Plan. F-5 SIGNATURES The undersigned registrant hereby amends the following items, financial statements and exhibits of its Annual Report for its fiscal year ended May 31, 1997 on Form 10-K as set forth in the pages attached hereto: To file as Exhibit 99.1 the Information, Financial Statements and Exhibits required by Form 11-K for the Input/Output, Inc. Employee Stock Purchase Plan. Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the Registrant has duly caused this Form 10-K/A-1 report to be signed on its behalf by the undersigned, thereunto duly authorized in the city of Stafford, State of Texas, on October 28, 1997. Input/Output, Inc. /s/ Charles E. Selecman --------------------------------- Chairman, President and Chief Executive Officer S-1