Bill Siwek

President and CEO, TPI Composites, Inc.

Mr. Siwek joined TPI Composites in August 2013 as Chief Financial Officer. In May 2019, Mr. Siwek was named President. In May 2020, Mr. Siwek assumed the role of Chief Executive Officer and was elected to the Board of Directors. Prior to joining TPI, Mr. Siwek previously served as the Chief Financial Officer for T.W. Lewis Company, an Arizona-based real estate investment company, from September 2012 to September 2013. 

From May 2010 until September 2012, he was an independent consultant assisting companies in the real estate, construction, insurance and renewable energy industries. Prior to that, Mr. Siwek was Executive Vice President and Chief Financial Officer of Talisker Mountain, Inc., from January 2009 to April 2010. Prior to that, he was President and Chief Financial Officer of the Lyle Anderson Company from December 2002 to December 2008. Prior to that, Mr. Siwek spent 18 years, from September 1984 to May 2002, with Arthur Andersen where he became a Partner in both Audit and Business Consulting Divisions. Mr. Siwek also serves on the Board of Directors of the American Clean Power Association, a renewable energy industry trade group, which commenced operations in January 2021. 

Mr. Siwek holds B.S. degrees in Accounting and Economics from University of Redlands and is a Certified Public Accountant. 


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