Simpson Manufacturing Co., Inc. — Director's Dealing 2013

May 21, 2013

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: SIMPSON MANUFACTURING CO INC /CA/ (NYSE:SSD)
CIK: 0000920371
Period of Report: 2013-05-20

Reporting Person: SIMPSON BARCLAY (Director, 10% Owner)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2013-05-20	Common Stock	S	10180	$28.9151	Disposed	6531048	Direct
2013-05-20	Common Stock	S	2820	$28.9151	Disposed	83806	Indirect

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	1000000	Indirect
Common Stock	6197	Indirect

Holdings (Derivative)

Security	Exercise Price	Expiration	Underlying	Shares	Ownership
Options on Common Stock	$32.626	2016-02-03	Common Stock (2000)	2000	Direct

Footnotes

F1: 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.

F2: The shares are owned by the Simpson PSB Fund, a California nonprofit public benefit corporation, of which Barclay Simpson is a member of the Board of Directors. Barclay Simpson disclaims beneficial ownership of these shares.

F3: This date represents the date of the first annual vesting period. This option vests equally over four years beginning with the date of grant.