Supply Chain Disclosure

May 4, 2012

Extended Supply Chain and Sustainable Raw Materials

Simpson Manufacturing Company Inc. and its subsidiaries, aim to ensure that everything we make or purchase is produced consistent with local law and our Code of Business Conduct and Ethics. Suppliers doing business with us should be committed to providing a healthy and safe working environment where workers are free from discrimination and intimidation; respecting both human rights and the environment. We seek to build and maintain long-term, mutually profitable and ethical supplier relationships.

We recognize that the extraction and harvesting of some raw materials can have significant social and economic impact - both positive and negative and we endeavor to identify and limit the materials in our supply chain that pose negative implications. In particular we are concerned with materials that come from regions of the world in conflict such as the Democratic Republic of Congo. We intend to inform our suppliers of our concerns in this area and ask them to work to provide us only materials that have been procured through a validated supply chain, so as to ensure that they have not, at any point, financed conflict.

Compliance with the California Transparency in Supply Chains Act of 2010 (SB 657)

Per the California Transparency in Supply Chains Act of 2010 (SB 657), many companies manufacturing or selling products in the state of California are required to disclose their efforts to address the issue of forced labor and human trafficking. Simpson Manufacturing Company Inc. and its subsidiaries, support efforts to eradicate forced labor and human trafficking. We intend to inform our vendors of our concerns regarding forced labor and human trafficking and ask them to provide us goods and services that do not violate these basic human rights. We will also ask that they provide us with any policies they have adopted addressing forced labor and human trafficking in their supply chain.

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