================================================================================ UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of report (Date of earliest event reported): March 1, 2005 SANGAMO BIOSCIENCES, INC. ------------------------------------------------------ (Exact Name of Registrant as Specified in Its Charter) Delaware ---------------------------------------------- (State or Other Jurisdiction of Incorporation) 000-30171 68-0359556 ------------------------ --------------------------------- (Commission File Number) (IRS Employer Identification No.) 501 Canal Blvd, Suite A100 Richmond, California 94804 ---------------------------------------- -------------------------- (Address of Principal Executive Offices) (Zip Code) (510) 970-6000 ---------------------------------------------------- (Registrant's Telephone Number, Including Area Code) ------------------------------------------------------------- (Former Name or Former Address, if Changed Since Last Report) Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below): [ ] Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) [ ] Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) [ ] Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) [ ] Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) ================================================================================ ITEM 8.01 OTHER EVENTS On March 1, 2005, Sangamo BioSciences Inc. issued a press release announcing that data from their program to develop a treatment for HIV infection was presented at the 12th Conference on Retroviruses and Opportunistic Infections. A copy of the press release issued by Sangamo BioSciences, Inc. relating to this event is filed as an exhibit to this Current Report on Form 8-K. ITEM 9.01 FINANCIAL STATEMENTS AND EXHIBITS (c) Exhibits. The following material is filed as an exhibit to this Current Report on Form 8-K: Exhibit No. ----------- 99.1 Press Release Issued March 1, 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 hereunto duly authorized. DATE: March 1, 2005 SANGAMO BIOSCIENCES, INC. By: /s/ EDWARD O. LANPHIER II ----------------------------------- Edward O. Lanphier II President, Chief Executive Officer