X0303 4/A 2009-03-17 2009-03-18 0000920371 SIMPSON MANUFACTURING CO INC /CA/ SSD 0001025790 SIMPSON BARCLAY 5956 W. LAS POSITAS BLVD. PLEASANTON CA 94588 1 1 1 0 Chairman of the Board Common Stock 2009-03-17 4 J 0 20004 0 D 0 I By General Partnership Common Stock 2009-03-17 4 J 0 20004 0 A 20004 D Common Stock 10009284 D Common Stock 487500 I By nonprofit public benefit corporation Common Stock 6710 I By Trust Options on Common Stock 44.79 2007-01-27 2011-01-26 Common Stock 1000 1000 D Options on Common Stock 38.39 2006-01-01 2009-12-31 Common Stock 1000 1000 D Simpson Investment Company ("SIC") was closed and terminated as of 12/31/08 and 100% of the shares owned by SIC were transferred to Barclay Simpson, as the General Partner. As of March 17, 2009, this transfer was completed. The shares are owned by the Simpson PSB Fund, a California nonprofit public benefit corporation (the "Fund"), of which Barclay Simpson is a Director. Barclay Simpson disclaims beneficial ownership of these shares. In addition, the Fund could be deemed a 10% owner of the common stock of the issuer if it were deemed part of a group with Barclay Simpson whithin the meaning of section 13(d)(3) of the Securities Exchange Act of 1934, as amended. The Fund and Barclay Simpson disclaim the existence of any such group. The shares are owned by the Simpson Manufacuturing Co., Inc. Profit Sharing Plan for Salaried Employees (the "Plan") of which Barclay Simpson is a participant. The Plan is qualified under sections 401(a)(26) and 410 of the Internal Revenue Code. This date represents the date of the first annual vesting period. This option vests equally over four years beginning with the date of grant. /s/Barclay Simpson 2010-01-21