Bruce W. Dienst

Bruce Dienst is Chairman of Simpson Technologies Corporation in Naperville, IL, USA.

A fifth-generation leader and the great-great-grandson of company founder Peter L. Simpson, Bruce joined Simpson full time in June 1983. In 1995, he became President of the company—a role he held until 2025, when he transitioned to his current position as Chairman.

Bruce graduated from Miami University in Oxford, Ohio in 1983 with a Bachelor of Science degree in Finance and in 1991 from the J.L. Kellogg Graduate School of Management at Northwestern University with a Masters in Management.

Under Bruce’s leadership Simpson has grown significantly – particularly in the global metal casting industry – including the acquisitions of the Dietert Automation product line from George Fischer Foundry Systems, Inc. in 1995, the Beardsley & Piper LLC from Pettibone LLC in 1998, the Gerosa sand testing equipment product line from Ing. R. Gerosa Srl in 1999, the Hartley Controls Corporation from Neenah Foundry Company in 2000, the former Georg Fischer sand testing equipment product line from DISA Industrie AG in 2008 and Webac Gesellschaft für Maschinenbau mbH from LEGA Kreditverwaltungs GmbH in 2018.

Bruce has provided leadership in many metal casting industry professional organizations including serving as the President of the Casting Industry Suppliers Association in 1994-5, President of the Foundry Educational Foundation in 2004-05 and as President of the American Foundry Society in 2015-16. He is the only person ever to have served as President of all three major American metal casting industry trade organizations. In recognition of his service Bruce was awarded the Casting Industry Suppliers Association Presidents Award in 2000 and an American Foundry Society Service Citation in 2002.

Besides his metal casting industry involvement, Bruce is active in the local community serving on the Board of Directors of the Rush-Copley Medical Center in Aurora, IL, currently acting as its Chairman, the Rush University Medical Center in Chicago, IL and the Rush System for Health.