Richard Doornbos, chief executive officer of Hemlock Semiconductor Group, has announced his retirement effective February 29, 2012. He joined the company as CEO in 2006 and has spearheaded more than US$4.5 billion of investment.

“Rick’s leadership during a period of unprecedented growth has driven Hemlock Semiconductor into a new era,” said Bob Hansen, president and CEO of Dow Corning. “We will miss the passion, expertise and experience Rick provided in his 33 years with Dow Corning and Hemlock Semiconductor and we wish him the best in his retirement.”

Doornbos joined Dow Corning in 1979 as a chemical engineer and prior to his current role as CEO of Hemlock Semiconductor Group held a variety of leadership positions within process engineering, supply chain, economic evaluation, corporate finance, product line and regional management. He holds a Bachelor of Science degree in chemical engineering from the University of Michigan.