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):  September 1, 2010

Simpson Manufacturing Co., Inc.

(Exact name of registrant as specified in its charter)

Delaware	1-13429	94-3196943
(State or other jurisdiction	(Commission	(I.R.S. Employer
of incorporation)	file number)	Identification No.)

5956 W. Las Positas Boulevard, 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 2.01 Completion of Acquisition or Disposition of Assets

On August 31, 2010, Simpson Manufacturing Co., Inc. completed the sale of substantially all of the assets of its subsidiary, Simpson Dura-Vent Company, Inc. The sale was announced in a press release, a copy of which is attached hereto as Exhibit 99.1 and incorporated herein by this reference.

Item 9.01 Financial Statements and Exhibits

Exhibit No.	Description
Exhibit 99.1	Press release dated September 1, 2010.

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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:	September 1, 2010	By:	/s/ Karen Colonias
			Karen Colonias
			Chief Financial Officer

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EX-99.1

Simpson Manufacturing Co., Inc. Announces the Completion of the Sale of the Assets of Its Subsidiary, Simpson Dura-Vent Company, Inc.

PLEASANTON, Calif., Sept. 1 /PRNewswire-FirstCall/ -- Simpson Manufacturing Co., Inc. (the "Company") announced today that on August 31, 2010, it completed the sale of substantially all of the assets of its subsidiary, Simpson Dura-Vent Company, Inc., to M&G Dura-Vent, Inc., a newly formed, wholly owned, indirect subsidiary of M&G Holding B.V. ("M&G"). The purchase price, as adjusted and subject to post-closing adjustments, was $27.7 million. Simpson Dura-Vent designed and manufactured venting systems for gas and wood burning appliances. M&G, a Netherlands-based company, manufactures and distributes venting products for European markets.

M&G, headquartered in Assen in the Netherlands, is a European market leader in venting systems. It has production facilities in the Netherlands, Italy and Turkey and sales offices and warehouses in Belgium, France, Germany and the UK. M&G manufactures venting systems for heating and hot water appliances, both conventional and high efficiency. It manufactures a range of systems in aluminum, stainless steel and polypropylene.

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.

CONTACT:  Barclay Simpson of Simpson Manufacturing Co., Inc., +1-925-560-9032