Board of Directors

Edward (“Ed”) C. Dowling Jr. joined Compass Minerals as president and chief executive officer (CEO) in January 2024. He continues to serve on the company’s board of directors, as he has since March 2022.

Mr. Dowling has more than 30 years of leadership experience and international mining expertise. Prior to joining Compass Minerals, Mr. Dowling served as the president, CEO and member of the board of directors of SSR Mining Inc. (f/k/a Alacer Gold Corp.), a publicly traded hard rock mining company (2008-2012), and was chair of the board (2013-2020). Previously, he was president and CEO of Meridian Gold Inc. (2006-2007), executive director for mining and exploration at De Beers S.A. (2004-2006) and executive vice president for operations at Cleveland-Cliffs Inc. (1998-2004). Additionally, he formerly served as chair of the board of PJSC Polyus and of Copper Mountain Mining Corporation. Mr. Dowling currently serves on the board of directors of Teck Resources Ltd.

Mr. Dowling is a member of the Environmental, Health, Safety and Sustainability Committee.

Richard P. Dealy has been a director of the company since May 2022. Mr. Dealy is the chief executive officer of Pioneer Natural Resources, an oil and gas exploration and production company. Prior to assuming his current role in January 2024, he served as Pioneer Natural Resources’ president and chief operating officer since January 2021, executive vice president and chief financial officer from 2004 through 2020, vice president and chief accounting officer from 1998 to 2004, and vice president and controller from 1997 to 1998. Mr. Dealy joined Parker & Parsley, a predecessor of Pioneer Natural Resources, in 1992. He is a certified public accountant and was employed by KPMG LLP before joining Parker & Parsley.

Mr. Dealy serves on the Audit Committee and the board of directors has determined that he is an Audit Committee financial expert. Mr. Dealy also serves on the Compensation Committee.

Vance O. Holtzman has been a director of the company since March 2024. Mr. Holtzman is the senior vice president of investments at Koch Minerals and Trading, a subsidiary of Koch Industries Inc. Prior to assuming his current role in 2018, he served as chief financial officer of Koch Minerals (2012-2018). Previous to joining Koch Industries Inc. in 2004 where he has held roles of increasing responsibility, he was a relationship manager at Cullen Frost Bank (2002-2004). He is currently a member of the board of directors of KOMSA, PQ Corporation and Hybar LLC.

Gareth Joyce has been a director of the company since October 2021. Mr. Joyce is the chief executive officer and member of the board of directors of Wahoo Fitness. Prior to being named to his current position in March 2024, Mr. Joyce served as chief executive officer and as a member of the board of directors of Proterra Inc. (2021-2024). Previously, he served as president of Proterra’s Powered and Energy business units (2020-2021). Before joining Proterra, he was at Delta Air Lines Inc. as chief sustainability officer (2020), senior vice president, airport customer service and president, Delta Cargo (2017-2020) and president, Delta Cargo (2016-2017). Mr. Joyce held roles of increasing responsibility at Daimler AG (2004-2016), including vice president, customer service, Mercedes-Benz USA, and president and chief executive officer, Mercedes-Benz Canada. He formerly served as a member of the board of directors of The American Cancer Society.

Mr. Joyce is chair of the Environmental, Health, Safety and Sustainability Committee and serves on the Nominating/Corporate Governance Committee.

Melissa M. Miller has been a director of the company since July 2022. Ms. Miller is the executive vice president and chief human resources officer of Arconic Corporation, a manufacturer of aluminum sheet, plate, extrusions and architectural products. Previous to this position, which she has held since the company’s launch in 2020, she was vice president of human resources for Arconic, Inc.’s global rolled products business from 2017 to 2020 and of its transportation and construction systems business from 2016 to 2017. From 2005 to 2016, Ms. Miller held multiple leadership roles at Alcoa with a broad spectrum of progressive human resources responsibilities. Arconic, Inc. and Alcoa are both predecessor companies of Arconic Corporation. Prior to joining Alcoa, Ms. Miller worked in corporate HR for more than seven years at Marconi, a technology company that creates and supports licensing platforms.

Ms. Miller is chair of the Nominating/Corporate Governance Committee and serves on the Compensation Committee.

Joseph (“Joe”) E. Reece has been a director of the company since March 2019. In May 2021, he began serving as non-executive chair of the board. Mr. Reece has been the co-managing partner of SilverBox Capital, LLC and its predecessors since 2015. Mr. Reece also served as a consultant to BDT & Company from October 2019 to November 2021. He previously served as the executive vice chair of UBS Group and head of UBS Securities LLC’s Investment Bank for the Americas from 2017 to 2018. Prior to these roles, he was at Credit Suisse from 1997 to 2015, in roles of increasing responsibility, including serving as global head of Equity Capital Markets and co-head of Credit Risk. His prior experience includes serving as an attorney for 10 years, including at the law firm Skadden, Arps, Slate, Meagher & Flom, LLP and at the Securities and Exchange Commission. Mr. Reece has previously served as a member of the board of directors of SilverBox Engaged Merger Corp. I, including as the executive chair, Atlas Technical Consultants, Inc. and its predecessor company, Boxwood Merger Corp., where he served as lead independent director, Del Frisco's Restaurant Group, Inc., RumbleOn, Inc., CST Brands, Inc., LSB Industries, Inc. and UBS Securities LLC. He is currently a member of the board of directors of NCR Corporation and Quotient Technology Inc.

Mr. Reece serves on the Audit Committee and the board of directors has determined that he is an Audit Committee financial expert. Mr. Reece also serves on the Nominating/Corporate Governance Committee and the Compensation Committee.

Shane Wagnon has been a member of the company’s board of directors since November 2022. Mr. Wagnon is the vice president of Trading and Terminals for Koch Carbon, LLC, a subsidiary of Koch Industries, Inc. in this role, which he has held since 2019, he holds profit and loss (P&L) responsibility for the company’s low-sulfur petroleum coke division and manages its ocean freight chartering group, along with general business development and strategy. From 2012 to 2019, Mr. Wagnon was general manager of Koch’s Global Sulfur business. He joined Koch in 2004 via its INVISTA subsidiary. Prior to his commercial leadership roles, Mr. Wagnon served in various business development capacities including capital projects, M&A, corporate restructuring, private equity partnerships and tax-equity investments.

Lori A. Walker has been a director of the company since 2015. Ms. Walker served as chief financial officer and senior vice president of The Valspar Corporation, a global coatings manufacturer, from 2008 to 2013, where she led the Finance, IT and Communications teams. Before this position, Ms. Walker served as Valspar’s vice president, controller and treasurer from 2004 to 2008, and as vice president and controller from 2001 to 2004. Prior to joining Valspar, Ms. Walker worked at Honeywell, Inc., a global conglomerate of commercial and consumer products, for 20 years in progressively increasing roles of responsibility, including as director of global financial risk management. Ms. Walker currently serves on the board of directors of Southwire Company, LLC, a private company. She also currently serves on the boards of directors of Constellium SE and Hayward Holdings, Inc., which are each publicly traded.

Ms. Walker serves as chair of the Audit Committee and the board of directors has determined she is an Audit Committee financial expert. Ms. Walker also serves on the EHS&S Committee.