SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER Pursuant to Rule 13a-16 or 15d-16 Under the Securities Exchange Act of 1934 For the month of August, 2005 ------------ Commission File Number 001-13908 --------- AMVESCAP PLC ------------------------------------------------ (Translation of registrant's name into English) 30 Finsbury Square, London EC2A 1AG, ENGLAND -------------------------------------------------------- (Address of principal executive offices) Indicate by check mark whether the registrant files or will file annual reports under cover Form 20-F or Form 40-F. Form 20-F X Form 40-F ----- ----- Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1): ------ Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7): ------ Indicate by check mark whether by furnishing the information contained in this Form, the registrant is also thereby furnishing the information to the Commission pursuant to Rule 12g3-2(b) under the Securities Exchange Act of 1934. Yes No X ------- ------- If "Yes" is marked, indicate below the file number assigned to the registrant in connection with Rule 12g3-2(b): 82- N/A ------------- Description of document filed: EXERCISE OF OPTIONS ------------------- AMVESCAP PLC IMMEDIATE RELEASE 1 AUGUST 2005 CONTACT: ANGELA TULLY TEL: 020 7065 3652 In Accordance with 3.1.4R of the Disclosure Rules and Rule 8.1 of The City Code on Takeovers and Mergers, notification is hereby given that:- On the 1 August 2005, Rothschild Trust (Cayman) Limited, the Trustee of the AMVESCAP Share Option Trust, sold 7,500 AMVESCAP ordinary shares at a price of 426.75p per share on behalf of a participant of the AMVESCAP Executive Share Option Scheme. The Company was notified of this transaction on 1 August 2005. Executive Directors of AMVESCAP PLC who are participants in the Share Option Schemes are deemed to be discretionary beneficiaries of the Trust and are consequently considered to be interested in all of the shares held by the Trustee. Following the transaction the AMVESCAP Concert Party,(comprising the Directors of AMVESCAP PLC, Rothschild Trust (Cayman) Limited - the Trustee of the AMVESCAP Share Option Trust, the AMVESCAP Employee Share Ownership Plan and the AMVESCAP Global Stock Plan) is interested in 92,167,684 Ordinary Shares of 25p each, representing 11.355% of the issued share capital. 1 AUGUST 2005 SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized. AMVESCAP PLC ------------------------------ (Registrant) Date 1 August, 2005 By /s/ Angela Tully -------------- -------------------------- (Signature) Angela Tully Assistant Company Secretary