Simpson Manufacturing Co CEO and leadership

Ms. Colonias has been the Chief Executive Officer of Simpson Manufacturing since January 2012 and was appointed to the Board of Directors in 2013. From 2009 to 2012, she was the Chief Financial Officer, Secretary and Treasurer. Prior to that, she held the position of Vice President of our global structural product solutions subsidiary, Simpson Strong-Tie Company Inc. and, in that capacity from 2004 to 2009, served as the Branch Manager of the Simpson Strong-Tie manufacturing facility in Stockton, California. She joined Simpson Strong-Tie in 1984 as an engineer in the Research and Development department, where she was responsible for the design and testing of new products and code development. In 1998, she was promoted to Vice President of Engineering and was responsible for the company’s research and development efforts. Before joining Simpson Strong-Tie, she worked as a civil engineer for the Bechtel Corporation, a global engineering, construction, and project management company. Ms. Colonias holds a Bachelor of Science degree in Engineering and a Masters of Business Administration degree. She is also a licensed professional engineer.

Mr. Magstadt has served as the Chief Financial Officer and Treasurer since January 2012. He joined Simpson Manufacturing in 2004 as a financial reporting specialist, and, from 2008 until 2012, served as the Financial Reporting Manager, overseeing our external reporting program and managing various other accounting and finance functions. He is a licensed Certified Public Accountant and holds a Bachelor of Science degree in Finance from California State University, Chico, and a Masters of Business Administration degree from Santa Clara University.

Mr. Olosky has served as the Chief Operating Officer since November 2020. Prior to joining Simpson Manufacturing, Mr. Olosky spent more than 22 years in numerous leadership positions at Henkel, a global chemical and consumer goods company. He most recently served as the Regional President, Henkel North America and Head of the Electronics and Industrial Division. Mr. Olosky has a BS in Mechanical Engineering from Michigan Technological University, an MBA from Michigan State University, and a MS in Mechanical Engineering from Oakland University.

Ms. Colonias has been the Chief Executive Officer of Simpson Manufacturing since January 2012 and was appointed to the Board of Directors in 2013. From 2009 to 2012, she was the Chief Financial Officer, Secretary and Treasurer. Prior to that, she held the position of Vice President of our global structural product solutions subsidiary, Simpson Strong-Tie Company Inc. and, in that capacity from 2004 to 2009, served as the Branch Manager of the Simpson Strong-Tie manufacturing facility in Stockton, California. She joined Simpson Strong-Tie in 1984 as an engineer in the Research and Development department, where she was responsible for the design and testing of new products and code development. In 1998, she was promoted to Vice President of Engineering and was responsible for the company’s research and development efforts. Before joining Simpson Strong-Tie, she worked as a civil engineer for the Bechtel Corporation, a global engineering, construction, and project management company. Ms. Colonias holds a Bachelor of Science degree in Engineering and a Masters of Business Administration degree. She is also a licensed professional engineer.