Bernard P. Aldrich

Retired Chief Executive Officer and President, Rimage Corporation

Retired Chief Executive Officer and President of Rimage Corporation (now Qumu Corporation), a publicly-held designer and manufacturer of on-demand publishing and duplicating systems for CD and DVD – recordable media. Our director since 1999 and member of our Audit and Compensation Committees. Mr.

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Christina M. Alvord

President, Central Division of Vulcan Materials Company

President, Central Division of Vulcan Materials Company, a producer of construction aggregates and aggregates-based construction materials and member of the S&P 500 Index. Our director since 2020 and a member of our Nominating and Corporate Governance Committee.

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Frank G. Heard

Vice Chairman of the Board, Gibraltar Industries, Inc.

Vice Chairman of the Board for Gibraltar Industries, Inc., a leading manufacturer and distributor of building products and services for the renewable energy, conservation, residential, industrial, and infrastructure markets, since 2019. Our director since 2020 and a member of our Audit Committee

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Lloyd E. Johnson

Retired Global Managing Director, Finance and Internal Audit, Accenture Corporation

Former Global Managing Director, Finance and Internal Audit, Accenture Corporation, a global management consulting firm, from 2004 to 2015. Our director since 2017. Chair of our Audit Committee. Previously Mr. Johnson was Executive Director, M&A and General Auditor for Delphi Automotive, a global

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Elizabeth M. Lilly

Chief Investment Officer and Executive Vice President, The Pohlad Companies

Chief Investment Officer and Executive Vice President for The Pohlad Companies, a privately-owned business based in Minneapolis that holds a diverse group of businesses and business interests, since 2018. Our director since 2020 and a member of our Compensation Committee and Nominating and

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Donald A. Nolan

Chairman of the Board, Apogee Enterprises, Inc., and Former President and Chief Executive Officer, Kennametal Inc.

Chairman of the Board, Apogee Enterprises, Inc., and President and Chief Executive Officer of Kennametal Inc., a global industrial technology leader delivering productivity through materials science, tooling and wear-resistant solutions to customers across the aerospace, earthworks, energy, general

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Herbert K. Parker

Retired Executive Vice President of Operation Excellence, Harman International Industries, Inc.

Executive Vice President of Operation Excellence, Harman International Industries, Inc., a worldwide leader in the development, manufacture and marketing of high-fidelity audio products, lighting solutions and electronic systems, from 2014 to 2017. Our director since 2018.

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Mark A. Pompa

Executive Vice President and Chief Financial Officer, EMCOR Group, Inc.

Executive Vice President and Chief Financial Officer of EMCOR Group, Inc., a Fortune 500 leader in mechanical and electrical construction services, industrial and energy infrastructure and building services, since 2006. Our director since 2018 and a member of our Audit and Compensation Committees.

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Joseph F. Puishys

Chief Executive Officer, Apogee Enterprises, Inc.

Joe was named Apogee Enterprises, Inc. chief executive officer (CEO), president and a member of the board of directors in August 2011. With more than 35 years of experience in manufacturing businesses, direct industry experience and a proven track record of success in leadership positions, Joe’s

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Patricia K. Wagner

Retired Group President of U.S. Utilities, Sempra Energy

Group President of U.S. Utilities of Sempra Energy, a Fortune 500 energy services holding company, from 2018 to 2019. Our director since 2016. Chair of our Compensation Committee. From 1995 to 2017, Ms. Wagner served in several leadership positions for the Sempra Energy family of companies,

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