1 COMMISSION FILE NO. 1-496 SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D. C. 20549 FORM 11-K ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE YEAR ENDED DECEMBER 31, 1999 Title of the Plan: HERCULES INCORPORATED SAVINGS AND INVESTMENT PLAN Issuer of the securities held pursuant to the Plan: HERCULES INCORPORATED Hercules Plaza 1313 North Market Street Wilmington, Delaware 19894 2 HERCULES INCORPORATED SAVINGS AND INVESTMENT PLAN FINANCIAL STATEMENTS STATEMENT OF NET ASSETS AVAILABLE FOR BENEFITS at December 31, 1999 and 1998 STATEMENT OF CHANGES IN NET ASSETS AVAILABLE FOR BENEFITS for the year ended December 31, 1999 Supplemental schedules required by Section 2520, 103-10 of the Department of Labor Rules and Regulations for Reporting and Disclosure under ERISA have been omitted because they are not applicable. Plans with all of their assets in a Master Trust are exempt from the requirement to include investment supplemental schedules as part of their Financial Statements. 3 HERCULES INCORPORATED SAVINGS & INVESTMENT PLAN STATEMENT OF NET ASSETS AVAILABLE FOR BENEFITS December 31, 1999 1998 INTEREST IN HERCULES INCORPORATED MASTER SAVINGS TRUST: $341,263,128 $316,023,858 ------------ ------------ NET ASSETS AVAILABLE FOR BENEFITS: $341,263,128 $316,023,858 ============ ============ The accompanying notes are an integral part of these financial statements. 4 HERCULES INCORPORATED SAVINGS & INVESTMENT PLAN STATEMENT OF CHANGES IN NET ASSETS AVAILABLE FOR BENEFITS Year Ended December 31, 1999 ADDITIONS: ADDITIONS TO NET ASSETS ATTRIBUTED TO: Increase in net interest in Hercules Incorporated Master Savings Trust: $ 43,973,904 Contributions: Participant 12,603,352 Employer 4,204,533 ------------ 16,807,885 ------------ Total additions 60,781,789 DEDUCTIONS: DEDUCTIONS FROM NET ASSETS ATTRIBUTED TO: Benefits paid to participants 34,973,923 Administrative expenses 568,596 ------------ Total deductions 35,542,519 ------------ Net increase 25,239,270 NET ASSETS AVAILABLE FOR BENEFITS: Beginning of year 316,023,858 ------------ End of year $341,263,128 ============ The accompanying notes are an integral part of these financial statements. 5 NOTES TO FINANCIAL STATEMENTS 1. DESCRIPTION OF PLAN AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES The following description of the Hercules Incorporated Savings & Investments Plan (the Plan) provides only general information. The Hercules Incorporated Savings and Investment Plan (the Plan) is a defined contribution plan subject to the provisions of the Employee Retirement Income Security Act of 1974 (ERISA). Participants should refer to the Plan agreement for a more complete description of the Plan's provisions. Upon hire, substantially all domestic Hercules Incorporated (the Company) employees are immediately eligible to participate in the Plan and obtain immediate, non-forfeitable (vested) rights to the full market value of their account. At time of enrollment in the Plan, participants may elect to contribute up to 15% of their annual wages on either a pre- or post-tax basis, or a combination thereof. The Company contributes in the form of Hercules Incorporated common stock, 50% of the first 6% of the annual wages that an employee contributes to the Plan. Participants shall direct the investment of their monthly savings in any of the Plan's investment media, or a combination thereof. The Plan provides for various investment options in any combination of stocks, bonds, fixed income securities, mutual funds, and other investment securities. Investment securities are exposed to various risks, such as interest rate, market, and credit. Due to the level of risk associated with certain investment securities and the level of uncertainty related to changes in the value of investment securities, it is at least reasonably possible that changes in risks in the near term would materially affect participants' account balances and the amounts reported in the statement of net assets available for benefits and the statement of changes in net assets available for benefits. The Plan includes an employee loan provision authorizing participants to borrow a minimum of $1,000 up to a maximum, equal to the lesser of $50,000 or 50% of their vested balances in the Plan. The loans are executed by promissory notes and have a minimum term of 12 months and a maximum term of 60 months, except for qualified residential loans, which have a maximum term of 120 months. The loans bear an interest rate equal to the average rate charged by selected major banks to prime customers for secured loans. The loans are repaid over the term in monthly installments of principal and interest by payroll deduction. A participant also has the right to repay the loan in full at any time without penalty. The preparation of financial statements in conformity with generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amounts of assets, liabilities and changes therein, and disclosures of contingent assets and liabilities at the date of the financial statements. Actual results could differ from those estimates. The financial statements of the Plan are prepared under the accrual method of accounting. Investments in the Plan are carried at fair value. The fair value of the common stock of Hercules Incorporated is based upon the price at which the stock closed on the New York Stock Exchange on the last business day of the year. The Blended Interest Rate Savings Fund is carried at cost plus investment earnings less withdrawals, which is equivalent to contract value. The market value of the Equity Fund, the Fidelity Magellan Fund, the Frank Russell Equity Index Fund, and the SEI group of funds is valued at the net asset value of the shares held by the Plan at year end, which is based on the fair value of the underlying securities held by the fund. Purchases and sales of securities are recorded on a trade-date basis. Interest income is recorded on the accrual basis and dividends are recorded on the ex-dividend date. Withdrawals are recorded upon distribution. The Plan provides that participants who retire from the Company may elect, upon retirement, an Optional Valuation Date (OVD) for determining their final withdrawal. The OVD is the last business day of any month following retirement, in which the distribution is requested. The Plan presents in the statement of changes in net assets available for benefits its allocated share of the Trust's investment activities, which includes the net appreciation (depreciation) in fair value of its investments, which consists of the realized gains or losses and the change in unrealized appreciation (depreciation) on those investments. Although it has not expressed any intent to do so, the Company has the right under the Plan to discontinue its contributions at any time and to terminate the Plan subject to the provisions of ERISA. 6 2. INVESTMENTS IN MASTER TRUST The assets of the Plan are held in the Hercules Incorporated Master Savings Trust (the Trust) with the assets of the Hercules Incorporated Employee Savings Plan. The assets of the Trust are held by Bankers Trust Company (Trustee). The Plan's investment in the Trust is based upon the fair value of net assets in the Trust and the Plan's relative interest in the Trust. The fair value of the Plan's interest in the Trust is based on the beginning of the year value of the Plan's interest in the Trust plus contributions, and allocated investment income less actual distributions. The Plan's share of the net assets of the Trust was approximately 97% at both December 31, 1999, and 1998. Recordkeeping for the Plan is performed by MetLife's Defined Contribution Group. The following table presents the fair values of investments for the Trust: December 31, 1999 1998 ------------ ------------ Hercules Incorporated Common Stock $ 55,786,379 $ 50,333,052 Mutual Funds ..................... 178,488,853 157,476,226 Blended Interest Rate Fund ....... 109,620,622 112,915,032 Loan Fund ........................ 8,092,771 8,654,993 ------------ ------------ Total ....................... $351,988,625 $329,379,303 ============ ============ Investment income for the trust for the year ended December 31, 1999 is as follows: Net appreciation in fair value of investments: Hercules Incorporated Common Stock ........ $ 1,607,455 Mutual Funds .............................. 27,879,518 ----------- 29,486,973 Interest .................................. 7,641,318 Dividends ................................. 8,091,845 ----------- Total ..................... $45,220,136 =========== 3. NONPARTICIPANT-DIRECTED INVESTMENTS Information about the net assets and the significant components of the changes in net assets relating to the nonparticipant-directed investments is as follows: December 31, 1999 1998 Interest in the Hercules Incorporated Master Savings Trust investment in Hercules Incorporated common stock: $ 15,641,111 $12,350,537 Year Ended December 31, 1999 Increase in net interest in Hercules Incorporated Master Savings Trust $ 901,452 Employer contributions 4,194,542 Benefits paid to participants (1,443,936) Interfund transfers (361,484) ----------- Net Increase $ 3,290,574 =========== 7 4. TAX STATUS The United States Treasury Department advised on October 29, 1997, that the Plan as amended through February 1, 1996 is a qualified trust under Section 401(a) of the Internal Revenue Code and is therefore exempt from Federal income taxes under provisions of Section 501(a) of the code. The Plan has been amended since receiving the determination letter. However, the Plan administrator believes that the Plan is designed and currently being operated in compliance with the applicable provisions of the Internal Revenue Code. 5. RECONCILIATION OF FINANCIAL STATEMENTS TO FORM 5500 The following is a reconciliation of net assets available for benefits for the Plan, per the financial statements to the Form 5500: December 31, 1999 1998 Net Assets Available for Benefits per the financial statements $ 341,263,128 $ 316,023,858 Amounts Allocated to Withdrawing Participants (132,738) (127,263) ------------- ------------- Net Assets Available for Benefits per the Form 5500 $ 341,130,390 $ 315,896,595 ============= ============= The following is a reconciliation of withdrawals per the financial statements to the Form 5500: Year Ended December 31, 1999 Benefits paid to participants per the financial statements $35,542,519 Add: Amounts Allocated to Withdrawing Participants at December 31, 1999 132,738 Less: Amounts Allocated to Withdrawing Participants at December 31, 1998 (127,263) ----------- Benefits paid to participants per the Form 5500 $35,547,994 =========== Amounts allocated to withdrawing participants are recorded on the Form 5500 for benefit claims that have been processed and approved for payment prior to December 31 but not yet paid as of that date. 8 REPORT OF INDEPENDENT ACCOUNTANTS To the Board of Directors, Hercules Incorporated, Wilmington, Delaware In our opinion, the accompanying statements of net assets available for benefits and the related statement of changes in net assets available for benefits present fairly, in all material respects, the net assets available for benefits of the Hercules Incorporated Savings & Investment Plan (the "Plan") at December 31, 1999 and December 31, 1998, and the changes in net assets available for benefits for the year ended December 31, 1999 in conformity with accounting principles generally accepted in the United States. 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 audits. We conducted our audits of these statements in accordance with auditing standards generally accepted in the United States, which 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, assessing the accounting principles used and significant estimates made by management, and evaluating the overall financial statement presentation. We believe that our audits provide a reasonable basis for the opinion expressed above. /s/ PricewaterhouseCoopers LLP Philadelphia, Pennsylvania 19103 June 26, 2000 9 SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the trustees (or other persons who administer the Plan) have duly caused this annual report to be signed by the undersigned hereunto duly authorized. HERCULES INCORPORATED SAVINGS AND INVESTMENT PLAN /s/ Ralph L. MacDonald, Jr. ----------------------------------------- Ralph L. MacDonald, Jr., Chairman Finance Committee, Hercules Incorporated, Plan Administrator Date: June 28, 2000 10 EXHIBIT INDEX Number Description 23 Consent of Independent Accountants.