UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant [x] Filed by a Party other than the Registrant [ ] Check the appropriate box: [ ] Preliminary Proxy Statement [ ] CONFIDENTIAL, FOR USE OF THE COMMISSION ONLY (AS PERMITTED BY RULE 14a-6(e)(2)) [ ] Definitive Proxy Statement [X] Definitive Additional Materials [ ] Soliciting Material Pursuant to Rule 14a-12 HERCULES INCORPORATED ------------------------------------------------------------------------------- (Name of Registrant as Specified In Its Charter) ------------------------------------------------------------------------------- (Name of Person(s) Filing Proxy Statement, if other than the Registrant) Payment of Filing Fee (Check the appropriate box): [x] No fee required. [ ] Fee computed on table below per Exchange Act Rules 14a-6(i)(4) and 0-11. 1) Title of each class of securities to which transaction applies: ------------------------------------------------------------------------------- 2) Aggregate number of securities to which transaction applies: ------------------------------------------------------------------------------- 3)Per unit price or other underlying value of transaction computed pursuant to Exchange Act Rule 0-11 (set forth the amount on which the filing fee is calculated and state how it was determined): ------------------------------------------------------------------------------- 4) Proposed maximum aggregate value of transaction: ------------------------------------------------------------------------------- 5) Total fee paid: ------------------------------------------------------------------------------- [ ] Fee paid previously with preliminary materials. [ ] Check box if any part of the fee is offset as provided by Exchange Act Rule 0-11(a)(2) and identify the filing for which the offsetting fee was paid previously. Identify the previous filing by registration statement number, or the Form or Schedule and the date of its filing. 1) Amount Previously Paid: ------------------------------------------------------------------------------- 2) Form, Schedule or Registration Statement No.: ------------------------------------------------------------------------------- 3) Filing Party: ------------------------------------------------------------------------------- 4) Date Filed: ------------------------------------------------------------------------------- [The following communications were sent to Hercules shareholders on July 18, 2003:] ATTENTION HERCULES SHAREHOLDERS ------------------------------- TIME IS SHORT -- THIS YEAR'S ANNUAL MEETING OF SHAREHOLDERS WILL BE HELD ON JULY 25, 2003 IF YOU HAVE NOT ALREADY VOTED, YOU MAY DO SO BY SIGNING, DATING AND FAXING THE ENCLOSED FAXABLE VERSION OF THE PROXY CARD TO: MACKENZIE PARTNERS, INC. FAX: 212-929-0308 ATTN: SIMON COOPE -------------------------------------------------------------------------------- IF YOU HAVE ANY QUESTIONS OR REQUIRE ASSISTANCE IN VOTING YOUR GOLD PROXY CARD, PLEASE CALL MACKENZIE PARTNERS AT THE PHONE NUMBERS LISTED BELOW. MACKENZIE PARTNERS, INC. 105 Madison Avenue New York, New York 10016 email: proxy@mackenziepartners.com Call collect: (212) 929-5500 or TOLL FREE: (800) 322-2885 -------------------------------------------------------------------------------- ATTENTION HERCULES SHAREHOLDERS ------------------------------- THE ANNUAL MEETING IS ON FRIDAY JULY 25, 2003. YOU CAN SAVE TIME BY RETURNING HERCULES' PROXY CARD, VIA FAX, TO: MACKENZIE PARTNERS, INC. FAX: 212-929-0308 ATTN: SIMON COOPE A FAXABLE VERSION OF THE PROXY CARD HAS BEEN ENCLOSED FOR YOUR CONVENIENCE. PLEASE REMEMBER TO SIGN AND DATE YOUR PROXY. -------------------------------------------------------------------------------- IF YOU HAVE ANY QUESTIONS OR REQUIRE ASSISTANCE IN VOTING YOUR GOLD PROXY CARD, PLEASE CALL MACKENZIE PARTNERS AT THE PHONE NUMBERS LISTED BELOW. MACKENZIE PARTNERS, INC. 105 Madison Avenue New York, New York 10016 email: proxy@mackenziepartners.com Call collect: (212) 929-5500 or TOLL FREE: (800) 322-2885 --------------------------------------------------------------------------------