8-K

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 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):  December 16, 2011

	Simpson Manufacturing Co., Inc.
	(Exact name of registrant as specified in its charter)
Delaware		0-23804	94-3196943
(State or other jurisdiction of incorporation)		(Commission file number)	(I.R.S. Employer Identification No.)
	5956 W. Las Positas Blvd., Pleasanton, CA 94588
	(Address of principal executive offices)

(Registrant’s telephone number, including area code):  (925) 560-9000

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:

o Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

o Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-2)

o Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

o Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240. 13e-4(c))

Item 1.01  Entry into a Material Definitive Agreement

On December 16, 2011, Simpson Manufacturing Co., Inc. (the “Company”) entered into an agreement to acquire substantially all of the assets of Automatic Stamping, LLC, a North Carolina limited liability company, and Automatic Stamping Auxiliary Services, LLC, a North Carolina limited liability company, and certain real property and improvements owned by TIMMCO, INC., a North Carolina corporation, for an aggregate of $41.4 million plus the value at closing of inventory and accounts receivable.

The Company announced this transaction in a press release, a copy of which is attached hereto as Exhibit 99.1 and incorporated herein by this reference.

Item 9.01(d)  Financial Statement and Exhibits

(d)  Exhibits:

Exhibit Number Description

99.1 Exhibit 99.1 Press release dated December 20, 2011.

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.

	Simpson Manufacturing Co., Inc.
	(Registrant)
DATE:December 20, 2011	By:	/s/ Karen Colonias
		Karen Colonias
		Chief Financial Officer

Exhibit 99.1 Press release dated December 20, 2011.

EX-99.1

Simpson Manufacturing Co., Inc. Announces Acquisition of Assets of Automatic Stamping Companies

PLEASANTON, Calif., Dec. 20, 2011 /PRNewswire/ -- Simpson Manufacturing Co., Inc. (the "Company") (NYSE: SSD) announced today that its subsidiary, Simpson Strong-Tie Company Inc., entered into an agreement to acquire substantially all of the assets of Automatic Stamping, LLC, a North Carolina limited liability company and Automatic Stamping Auxiliary Services, LLC, a North Carolina limited liability company (collectively "Automatic Stamping"), and certain real property and improvements owned by TIMMCO, INC., a North Carolina corporation, for an aggregate of $41.4 million plus the value at closing of inventory and accounts receivable. Automatic Stamping manufactures and sells a line of high quality truss connector plates primarily in the United States. The transaction is expected to close in December 2011 or January 2012.

Simpson Manufacturing Co., Inc., headquartered in Pleasanton, California, through its subsidiary, Simpson Strong-Tie Company Inc., designs, engineers and is a leading manufacturer of wood-to-wood, wood-to-concrete and wood-to-masonry connectors and fastening systems, stainless steel fasteners and pre-fabricated shearwalls. Simpson Strong-Tie also offers a full line of adhesives, mechanical anchors and powder actuated tools for concrete, masonry and steel. The Company's common stock trades on the New York Stock Exchange under the symbol "SSD."

For further information, contact Barclay Simpson at (925) 560-9032.