ISCO, INC. RETIREMENT PLU$ PLAN Financial Statements And Supplemental Schedules For The Years Ended July 31, 1997 and 1996 And Independent Auditors' Report 38 ISCO, INC. RETIREMENT PLU$ PLAN FINANCIAL STATEMENTS AND SUPPLEMENTAL SCHEDULES AND INDEPENDENT AUDITORS' REPORT TABLE OF CONTENTS Page FINANCIAL STATEMENTS: Independent Auditors' Report 40 Statements of Net Assets Available for Benefits 41 Statements of Changes in Net Assets Available for Benefits 42 Notes to Financial Statements 43 SUPPLEMENTAL SCHEDULES: Item 27a - Schedule of Assets Held for Investment Purposes - July 31, 1997 51 Item 27d - Schedule of Reportable Transactions - Year Ended July 31, 1997 52 Schedules not filed herein are omitted because of the absence of the conditions under which they are required. 39 INDEPENDENT AUDITORS' REPORT Plan Committee Isco, Inc. Retirement Plu$ Plan Lincoln, Nebraska We have audited the accompanying statements of net assets available for benefits of the Isco, Inc. Retirement Plu$ Plan as of July 31, 1997 and 1996 and the related statements of changes in net assets available for benefits for the years then ended. These financial statements are the responsibility of the Plan's management. Our responsibility is to express an opinion on the financial statements based on our audits. We conducted our audits 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 also 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 audits provide a reasonable basis for our opinion. In our opinion, such financial statements present fairly, in all material respects, the net assets available for benefits of the Isco, Inc. Retirement Plu$ Plan as of July 31, 1997 and 1996, and the changes in net assets available for benefits for the years then ended, in conformity with generally accepted accounting principles. Our audits were conducted for the purpose of forming an opinion on the basic financial statements taken as a whole. The supplemental schedules of (1) assets held for investment purposes as of July 31, 1997, and (2) reportable transactions for the year ended July 31, 1997, are presented for the purpose of additional analysis and are not a required part of the basic financial statements, but are supplementary information required by the Department of Labor's Rules and Regulations for Reporting and Disclosure under the Employee Retirement Income Security Act of 1974. The supplemental information by fund in the statements of net assets available for benefits and the statements of changes in net assets available for benefits is presented for the purpose of additional analysis rather than to present the net assets available for benefits and changes in net assets available for benefits of the individual funds. The supplemental schedules and supplemental information by fund is the responsibility of the Plan's management. Such supplemental schedules and supplemental information by fund have been subjected to the auditing procedures applied in our audit of the basic financial statements and, in our opinion, are fairly stated in all material respects when considered in relation to the basic financial statements taken as a whole. Deloitte & Touche LLP Lincoln, Nebraska September 26, 1997 40 ISCO, INC. RETIREMENT PLU$ PLAN STATEMENTS OF NET ASSETS AVAILABLE FOR BENEFITS (amounts in thousands) July 31, 1997 July 31, 1996 --------------------------------------------------------------------------------- Supplemental Information Supplemental Information by Fund by Fund ------------------------ ------------------------ Employer Participant Employer Participant Directed Directed Total Directed Directed Total -------- ----------- ----- -------- ----------- ----- Investments, at fair value as determined by quoted market prices (Note C): Money market funds $204 $ 1,666 $ 1,870 $271 $ 1,687 $ 1,958 Mutual funds -- 17,612 17,612 -- 12,706 12,706 Bank collective funds -- 303 303 -- -- -- Isco, Inc. common stock fund -- 503 503 -- 643 643 Investments, at estimated fair value: Other investments 41 -- 41 88 -- 88 ----- ------ ------- ---- -------- ------- 245 20,084 20,329 359 15,036 15,395 Participant loans -- 489 489 -- 513 513 ----- ------ ------- ---- -------- ------- Total investments 245 20,573 20,818 359 15,549 15,908 Employer contributions receivable -- 112 112 -- 97 97 Accrued income 1 -- 1 1 -- 1 ----- ------ ------- ---- -------- ------- Net assets available for benefits $246 $20,685 $20,931 $360 $15,646 $16,006 ===== ======= ======= ==== ======= ======= The accompanying notes are an integral part of the financial statements 41 ISCO, INC. RETIREMENT PLU$ PLAN STATEMENTS OF CHANGES IN NET ASSETS AVAILABLE FOR BENEFITS (amounts in thousands) July 31, 1997 July 31, 1996 --------------------------------------------------------------------------------- Supplemental Information Supplemental Information by Fund by Fund ------------------------ ------------------------ Employer Participant Employer Participant Directed Directed Total Directed Directed Total -------- ----------- ----- -------- ----------- ----- Investment income (Note C and G): Dividends, interest, and other income $ 34 $ 1,329 $ 1,363 $ 34 $ 1,168 $ 1,202 Net realized and unrealized appreciation (depreciation) in fair value of investments (21) 4,153 4,132 (4) (520) (524) ----- ------ ------- ---- -------- ------- Net investment income 13 5,482 5,495 30 648 678 ----- ------ ------- ---- -------- ------- Contributions: Employer annual profit sharing -- 112 112 -- 97 97 Employer 401(k) matching -- 138 138 -- 148 148 Participant -- 729 729 -- 774 774 ----- ------ ------- ---- -------- ------- -- 979 979 -- 1,019 1,019 ----- ------ ------- ---- -------- ------- Total additions 13 6,461 6,474 30 1,667 1,697 Benefits paid (26) (1,523) (1,549) (19) (975) (994) Transfers (101) 101 -- -- -- -- ----- ------ ------- ---- -------- ------- Increase (decrease) in net assets available for benefits (114) 5,039 4,925 11 692 703 Net assets available for benefits: Beginning of year 360 15,646 16,006 349 14,954 15,303 End of year $246 $20,685 $20,931 $360 $15,646 $16,006 ===== ======= ======= ==== ======= ======= The accompanying notes are an integral part of the financial statements 42 ISCO, INC. RETIREMENT PLU$ PLAN NOTES TO FINANCIAL STATEMENTS Years ended July 31, 1997 and 1996 (Columnar amounts in thousands, except share data) A. DESCRIPTION OF PLAN General--The following brief description of the Isco, Inc. Retirement Plu$ Plan (the Plan) is provided for general information purposes only. Participants should refer to the Plan document for more complete information. The Plan was established, effective August 1, 1972, to provide retirement benefits for the employees of Isco, Inc. (the Company). The Plan was last amended effective August 1, 1995. Effective August 1, 1987, a 401(k) salary reduction option was incorporated into the Plan. Employees are eligible for participation after they have completed one year of service and are at least 21 years of age. A year of service is defined as the accumulation of 1,000 hours of credited service during a one-year period beginning on the employment date. Participant contributions, employer 401(k) matching contributions, and employer annual profit sharing contributions, are invested at American Century Investments under the direction of the plan participants. Contributions--Contributions to the Plan are provided from the following sources: Employer Annual Profit Sharing Contribution (Participant Directed)--The Employer is required to contribute an amount equal to the lesser of 7% of the current net profit of the Company or the maximum amount allowed by the Internal Revenue Code. The contributed amount received by each participant is based on their percentage of total eligible compensation. Participant Contributions (Participant Directed)--Plan participants may elect to reduce their compensation by a maximum of 12%, subject to IRS limitations. The Employer then contributes the amount of reduction in compensation to the Plan on behalf of each participant. Employer 401(k) Matching Contribution (Participant Directed)--The Employer is required to match 20% of the contribution made on behalf of each participant electing salary reductions up to a maximum of 10% of the participant's eligible compensation. Participant Accounts--Each participant's account is credited with the participant's contribution, the Company's matching contribution and the allocated portion of: the Company's annual contribution and the forfeited portion of terminated participants' non-vested accounts. Any 401(k) forfeitures are allocated, based on a participant's contributions to the 401(k) plan during the year. The Company's annual contribution and forfeitures are allocated to each participant's account based on the percentage of the participant's eligible compensation for the plan year to the total compensation of all eligible participants for the plan year. Earnings are credited directly to each investment option in which the participant had an investment on the record date of the dividend or interest distribution. Use of Estimates--The preparation of the financial statements in accordance with generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amounts of net assets 43 available for benefits and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of changes in net assets available for benefits during the reporting period. Actual results could differ from those estimates. Vesting--Participant contributions (i.e. employee salary reduction amounts) and participant rollover contributions are immediately fully vested and nonforfeitable. Employer profit sharing contributions and the Employer 401(k) matching contributions vest 20% upon completion of three years of credited service, increasing 20% per year until fully vested upon completion of seven years of credited service. Payment of Benefits--On termination of service due to death, disability or retirement, a participant with a vested balance greater than $3,500 may elect to receive either a lump sum equal to the participant's vested interest in his or her account, or monthly installments. A participant with a vested balance less than $3,500 is entitled to receive a lump sum payment equal to the participant's vested account balance. Plan participants are eligible for normal retirement at age 65 but may elect to retire at a later date. Upon attainment of 65 years of age, death, or determination of disability, a participant becomes 100% vested regardless of the number of credited years of service completed. Plan Expenses--As an additional benefit to the participants, the Employer, without reimbursement, pays for all costs, except for loan origination and loan maintenance fees, required to administer the Plan. These costs are not reflected in the financial statements. Employer Directed--Employer directed funds are invested in the Restricted Fund, which is managed by the employer. Assets in the Restricted Fund at July 31, 1997 include: Balcor Pension Investors II and III, Benham Stable Value Government Fund, and Chase Manhattan Bank Pooled Investment. Transfers from the Restricted Fund to the Unrestricted Fund are directed by the Plan Committee. Investment Options: Participant Directed--Participant directed contributions may be invested in one or more of thirteen funds. A brief summary description of each investment option follows: Benham Stable Value Government Fund--A fund which seeks to provide current income while maintaining a stable share price. It is managed by SEI Trust Co. In 1996, the name of this fund was Bankers Trust Stable Value Government Trust Fund. Benham Premium Bond Fund--A fund which seeks a high level of income from a portfolio of longer-term bonds and other debt obligations. The fund pays a reduced management fee. In 1996, the name of this fund was Twentieth Century Premium Managed Bond Fund. American Century Balanced Fund--A fund which seeks capital growth and current income by investing in equity securities with prospects for growth and in investment grade bonds and other fixed income securities. In 1996, the name of this fund was Twentieth Century Balanced Investors Fund. 44 Twentieth Century Select Fund--A fund comprised primarily of income-producing equity securities of larger companies possessing potential for appreciation. In 1996, the name of this fund was Twentieth Century Select Investors Fund. Twentieth Century Ultra Fund--A fund comprised primarily of equity securities of medium and smaller companies with the potential for appreciation. In 1996, the name of this fund was Twentieth Century Ultra Investors Fund. Twentieth Century International Growth Fund--A fund which seeks capital growth by investing primarily in an internationally diversified portfolio of common stocks. In 1996, the name of this fund was Twentieth Century International Equity Fund. Barclays Equity Index Fund--A fund invested primarily in stocks of a broad array of established U.S. Companies. It invests to match the performance of the S&P 500 Index by investing in most of the same companies. Assets in the fund consist of Barclays U.S. Tactical Asset Allocation Fund J. American Century Strategic Allocation: Conservative--A fund seeking to provide regular income through its emphasis on bonds and money market securities combined with the potential for moderate long-term return as the result of its stake in equity securities. American Century Strategic Allocation: Moderate--A fund emphasizing in equity securities but maintaining a sizable stake in bonds and money market securities. American Century Strategic Allocation: Aggressive--A fund emphasizing in equity securities, but maintaining a portion of its assets in bonds and money market securities. American Century Value Fund--A fund investing primarily in equity securities of well established companies with intermediate to large market capitalizations that are believed by fund management to be undervalued at the time of purchase. Twentieth Century Vista Fund--A fund investing primarily in medium sized and smaller companies with above average prospects for appreciation. Isco, Inc. Common Stock Fund--A fund invested primarily in Isco, Inc. common stock. Isco, Inc. is a party-in-interest and sponsor of the Plan. B. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Basis of Accounting--The financial statements of the Plan are prepared under the accrued method of accounting. Investment Valuation and Income Recognition--Investments are stated at fair value. Fair value of marketable securities is determined by reference to the closing quoted price by the exchange on which the security is listed or the closing net asset value as reported by the mutual fund. Participant loans are stated at their outstanding principal balance. The amounts shown, in Note C, for securities that do not have a quoted market price represent fair value estimated by an independent third party. 45 Investment transactions are recognized on a settlement date basis. The net realized and unrealized appreciation (depreciation) of investments is recognized in the statements of changes in net assets available for benefits. The fair value at the beginning of the plan year, or the purchased cost if acquired during the year, is used in determining realized and unrealized gains and losses on the sale of each investment. Payment of Benefits--The Plan's policy is to record benefit payments upon distribution to the participants. Benefits payable to retired and terminated participants were $35,614 and $830,202 at July 31, 1997 and 1996, respectively. Contributions--Employer profit sharing contributions are computed as of the end of the Employer's fiscal year and are recorded by the Plan in the corresponding period, but allocated to participants' accounts in the plan quarter in which the profit sharing contribution is made to the Plan. Participant contributions are recorded in the period in which the bi-weekly payroll deductions are made. The Employer 401(k) matching contributions are also recorded in the period that the payroll deductions are made. 46 C. INVESTMENTS The following schedules present the fair values of investments. July 31, 1997 ______________________________________________________________________________ Number of Shares/ Fair Units Value ---------- --------- Investments at fair value as determined by quoted market price: Money Market: Benham Stable Value Government Fund 1,819,342 $ 1,819 Chase Manahattan Bank Pooled Investment 50,767 51 Mutual Funds: Twentieth Century International Growth Fund 144,894 1,459 Twentieth Century Ultra Fund 134,306 4,874 Twentieth Century Select Fund 129,518 6,550 American Century Balanced Fund 135,438 2,693 Benham Premium Bond Fund 69,283 703 American Century Value Fund 73,929 580 Twentieth Century Vista Fund 25,255 372 American Century Strategic Allocation: Conservative 9,340 52 American Century Strategic Allocation: Moderate 34,308 204 American Century Strategic Allocation: Aggressive 19,795 125 Other Investments: Isco, Inc. Common Stock Fund 61,910 503 Bank Collective Funds: Barclays Equity Index Fund 13,590 303 Investments at estimated fair value: Balcor Pension Investors II 101 14 Balcor Pension Investors III 202 27 ------- Total Investments at Fair Value $20,329 ======= 47 July 31, 1996 ______________________________________________________________________________ Number of Shares/ Fair Units Value --------- ----- Investments at fair value as determined by quoted market price: Money Market: Benham Stable Value Government Fund 1,945,541 $ 1,946 Chase Manhattan Bank Pooled Investment 12,036 12 Mutual Funds: Twentieth Century International Growth Fund 129,942 1,034 Twentieth Century Ultra Fund 118,544 3,066 Twentieth Century Select Fund 139,150 5,066 American Century Balanced Fund 155,797 2,649 Benham Premium Bond Fund 91,224 891 Other Investments: Isco, Inc. Common Stock Fund 66,354 643 Investments at estimated fair value: Balcor Pension Investors II 101 43 Balcor Pension Investors III 202 45 ------- Total Investments at Fair Value $15,395 ======= ______________________________________________________________________________ During the years ended July 31, 1997 and 1996, the Plan's investments appreciated(depreciated) by $4,131,854 and $(523,908) respectively, as follows: Net Realized and Unrealized Appreciation (Depreciation) in Fair Value ______________________________________________________________________________ Year Ended July 31, ------------------- 1997 1996 ---- ---- Investments at fair value as determined by quoted market price: Mutual Funds: Twentieth Century International Growth Fund $ 308 $ 61 Twentieth Century Ultra Fund 1,348 (42) Twentieth Century Select Fund 1,922 (406) American Century Balanced Fund 399 (70) Benham Premium Bond Fund 28 (8) American Century Value Fund 81 -- Twentieth Century Vista Fund 78 -- American Century Strategic Allocation: Conservative 4 -- American Century Strategic Allocation: Moderate 17 -- American Century Strategic Allocation: Aggressive 17 -- Bank Collective Funds: Barclays Equity Index Fund 50 -- Other Investments: Isco, Inc. Common Stock Fund (99) (55) Investments at estimated fair value: Other (21) (4) ------ ----- $4,132 $(524) ====== ===== 48 D. PLAN TERMINATION Although the Company has not expressed any intent to terminate the Plan, it may do so at any time by giving 30 days notice to the Plan Committee, the Plan Administrator, and the Trustee. In the event of such termination, Plan assets would be valued and participants' accounts would be adjusted to reflect the allocation of net gains and losses of the underlying investments. At that time, participants' accounts would become fully vested and nonforfeitable. E. FEDERAL INCOME TAX STATUS The Plan has received a determination letter from the Internal Revenue Service dated September 7, 1995, which states that the Plan, as amended June 17, 1994, meets the requirements of Section 401(a) of the Internal Revenue Code and is, therefore, exempt from Federal income tax under Section 501(a) of the Code. The Plan administrator believes that the Plan is in compliance with current regulations. Therefore, no provision for income taxes is provided in the financial statements of the Plan. Plan income, participant pretax contributions, and employer contributions represent taxable income to the participating employees at the time of distribution. F. FUND INFORMATION Participant contributions, benefit payments, and dividends, interest and other income by fund are as follows for the years ended July 31, 1997 and 1996. ______________________________________________________________________________ 1997 1996 ---- ---- Participant contributions: Benham Stable Value Government Fund $ 53 $ 68 Twentieth Century International Growth Fund 80 87 Twentieth Century Ultra Fund 218 235 Twentieth Century Select Fund 181 206 American Century Balanced Fund 102 106 American Century Value Fund 9 -- Twentieth Century Vista Fund 7 -- American Century Strategic Allocation: Conservative 1 -- American Century Strategic Allocation: Moderate 2 -- American Century Strategic Allocation: Aggressive 2 -- Barclays Equity Index Fund 5 -- Isco, Inc. Common Stock Fund 41 42 Benham Premium Bond Fund 28 30 ---- ---- Total $ 729 $ 774 ====== ===== 49 F. FUND INFORMATION (continued) 1997 1996 ---- ---- Benefits paid: Benham Stable Value Government Fund $ 68 $ 128 Twentieth Century International Growth Fund 141 53 Twentieth Century Ultra Fund 372 247 Twentieth Century Select Fund 331 237 American Century Balanced Fund 318 243 Benham Premium Bond Fund 144 21 Isco, Inc. Common Stock Fund 68 19 Participant loans 81 27 ---- ---- Total $1,523 $ 975 ====== ====== Dividends, interest, and other income: Benham Stable Value Government Fund $ 93 $ 86 Twentieth Century International Growth Fund 123 1 Twentieth Century Ultra Fund 187 145 Twentieth Century Select Fund 542 600 American Century Balanced Fund 276 226 Benham Premium Bond Fund 49 55 American Century Value Fund 2 -- American Century Strategic Allocation: Conservative 1 -- American Century Strategic Allocation: Moderate 2 -- Isco, Inc. Common Stock Fund 13 13 Participant loans 41 42 ---- ---- Total $1,329 $1,168 ====== ====== ______________________________________________________________________________ 50 ISCO, INC. RETIREMENT PLU$ PLAN PN 001 EIN #47-0461807 (amounts in thousands, except per share/unit data) ITEM 27a - SCHEDULE OF ASSETS HELD FOR INVESTMENT PURPOSES July 31, 1997 _________________________________________________________________________________________________________________________________ Column B Column C Column D Column E - -------- -------- -------- -------- Description of investment including collateral, rate of interest, maturity date, Current Identity of issue, borrower, lessor or similar party par or maturity value Cost Value - --------------------------------------------------- ------------------------ ----------- --------- Money Market: - ------------- *Benham Stable Value Government Fund 1,819,342 shares $1,819 $ 1,819 *Chase Manhattan Bank Pooled Investment 50,767 shares 51 51 Mutual Funds: - ------------- *Twentieth Century Select Fund 129,518 shares 5,139 6,550 *American Century Balanced Fund 135,438 shares 2,181 2,693 *Benham Premium Bond Fund 69,283 shares 691 703 *Twentieth Century Ultra Fund 134,306 shares 3,315 4,874 *Twentieth Century International Growth Fund 144,894 shares 1,114 1,459 *Twentieth Century Vista Fund 25,255 shares 294 372 *American Century Value Fund 73,929 shares 501 580 *American Century Strategic Allocation: Conservative 9,340 shares 48 52 *American Century Strategic Allocation: Moderate 34,308 shares 187 204 *American Century Strategic Allocation: Aggressive 19,795 shares 107 125 Bank Collective Funds: - ---------------------- Barclays Equity Index Fund 13,590 Units 257 303 Other Investments: - ------------------ *Isco, Inc. Common Stock Fund 61,910 shares 503 *Participant loans Interest rates ranging from 7.25% to 10.25% maturing August 1997 through June 2002 -- 489 Balcor Pension Investors II 101 units 61 14 Balcor Pension Investors III 202 units 60 27 ------ *Party-in-interest $20,818 ======= 51 ISCO, INC. RETIREMENT PLU$ PLAN PN 001 EIN #47-0461807 (amounts in thousands, except number of transactions data) ITEM 27d - SCHEDULE OF REPORTABLE TRANSACTIONS SERIES OF TRANSACTIONS FOR THE YEAR ENDED JULY 31, 1997 Column A Column B Column C Column D Column E Column F - ------------------ -------------------- ------------ ------------- -------------- --------- Total Dollar Identity of Number of Value of Total Dollar Party Involved Description of Asset Transactions Purchases Value of Sales Net Gain - ------------------ -------------------- ------------ ------------- -------------- -------- *Twentieth Century Select Fund 90 $1,712 $ -- $ -- *Twentieth Century Select Fund 68 -- 2,150 106 *American Century Balanced Fund 64 498 -- -- *American Century Balanced Fund 53 -- 853 97 *Twentieth Century Ultra Fund 99 1,757 -- -- *Twentieth Century Ultra Fund 62 -- 1,297 165 *Benham Stable Value Government Fund 107 2,093 -- -- *Benham Stable Value Government Fund 51 -- 2,220 -- *Party-in-interest 52