Tetra Technologies TTI

Mr. Murphy has served as President and Chief Executive Officer since 2019 and has been a member of the Board of Directors since 2018. He has more than 35 years of global operations, engineering, manufacturing and business development experience in a variety of areas within the energy industry, including deepwater, mature fields and unconventional assets. Mr. Murphy served as our Chief Operating Officer prior to his current role as President and CEO. Before joining TETRA, Mr. Murphy was Chief Executive Officer of Paradigm Group B.V., a private company focused on strategic technologies for the upstream energy industry. Mr. Murphy previously served at Halliburton (NYSE: HAL), a multinational oil service company, for 26 years and held numerous international and North American positions, including Senior Vice President, Global Business Development and Marketing; Senior Vice President, Business Development Eastern Hemisphere; and Senior Vice President, Europe/Sub-Saharan Africa Region. Earlier in his career, Mr. Murphy held several positions at Gerhart Industries. Education: B.S., Chemical Engineering, Pennsylvania State University Advanced Management Program, Harvard Business School.

Matthew J. Sanderson has served as our Executive Vice President and Chief Financial Officer since April 1, 2026 and served as our Executive Vice President and Chief Commercial Officer from September 2022 until March 31, 2026. From December 2016 until September 2022, he served as our Senior Vice President responsible for our Water & Flowback Services division and our global Completion Fluids & Products division. Prior to joining TETRA, Mr. Sanderson served as Regional Vice President - U.S. West at Schlumberger from October 2015 to November 2016. Mr. Sanderson started his career as a Field Engineer at Schlumberger in 1997 and held various leadership roles in Operations, Engineering, Human Resources, and QHSE in North America and internationally (Australia, Thailand, India, Canada). Mr. Sanderson earned a Bachelor of Applied Science in Civil Engineering (Environmental Option) from Queen's University in Kingston, Canada and a Master's of Science in Oil & Gas Industry Management from Heriot-Watt University in Edinburgh, Scotland.

Timothy C. Moeller has served as our Senior Vice President of Global Supply Chain and Chemicals since May 2020 and served as Vice President and Chief Procurement Officer from April 2018 to May 2020. Prior to joining TETRA, from September 2012 until March 2018, Mr. Moeller served as Chief Operating Officer of Melior Innovations and Chief Executive Officer of TessaFrac. From May 2006 until February 2012, Mr. Moeller held numerous Supply Chain management positions with increasing responsibility at Halliburton. Earlier in his career, Mr. Moeller held several supply chain management positions with Tyco International and YPF/Maxus Corporation. Mr. Moeller received a bachelor's degree in business administration from Texas A&M University.

Roy E. McNiven has served as our Senior Vice President of Energy Services Operations since September 2022. Prior to joining TETRA, he served as the Senior Vice President of Operations for CSI Compressco GP LLC, the general partner of CSI Compressco LP and one of our former subsidiaries, from December 2019 until February 3, 2022 and as Vice President of Operations from October 2018 until December 2019. Mr. McNiven served as Vice President of Rental Operations at Nabors Industries Ltd. from December 2017 until joining CSI Compressco. Prior to this role, he served for 13 years at Tesco Corporation in various management levels roles, including Vice President of Product Supply and Commercialization, Vice President of Products and Services, Vice President of Aftermarket Sales & Service, Rentals and Global Supply Chain, and Global Director, Aftermarket Sales & Service and Rentals, before Tesco was acquired by Nabors. Mr. McNiven earned a Bachelor of Business Administration degree, as well as an Executive MBA, from Athabasca University in Canada.

Mr. Glick has been Chair of the Board since 2022, a member of the Nominating, Governance, and Sustainability Committee from 2015 to May 2023, including chair of that committee from 2015 to May 2022, and a member of the Human Capital Management and Compensation Committee from 2014 to May 2022. He joined the Board in 2014. Mr. Glick previously served in roles of increasing responsibility at Lufkin Industries, Inc., a global provider of rod lift optimization solutions, products, technologies, and services to the oil and gas industry, concluding with President and Chief Executive Officer. During his tenure, he oversaw the company's growth as a public company and its eventual sale to General Electric. Previously, Mr. Glick served as Vice President and General Manager of Lufkin's Power Transmission Division. He also served as Vice President and General Manager of Lufkin's Oilfield Division. Before joining Lufkin, Mr. Glick held several senior management positions with Cameron Iron Works, Inc. Former Public Boards: Hunting PLC (LSE: HTG.L) 2015-April 2024 Weatherford International Plc (NASDAQ: WFRD) 2019-June 2020 Education: B.S., Journalism, University of Kansas Management Development Program, Harvard Graduate School of Business.

Ms. McGee has been a member of the Board since February 2022, chair of the Nominating, Governance and Sustainability Committee since May 2024, and has served on both the Human Capital Management and Compensation Committee and the Nominating, Governance, and Sustainability Committee since February 2022. Ms. McGee founded SDBM Executive and Strategic Advisory LLC in 2021 and provides advisory services to the new energy, chemicals, materials, mining, and oil and gas industries. Previously, Ms. McGee had a 33-year tenure at Albemarle Corporation (NYSE: ALB), one of the largest global producers of lithium/ lithium derivatives and bromine/ bromine derivatives. She held positions of increasing responsibility over her extensive career at Albemarle, including: Vice President, Investor Relations & Corporate Development; Vice President, Asia Pacific Region and Global Fire Safety Sales; Vice President, Sales, Americas; Division Vice President, Performance Chemicals; and Global Business Director, Industrial Bromides. She was heavily involved in many of the strategic discussions with respect to Albemarle's lithium and bromine operations. Education: B.S., Chemical Engineering, University of Arkansas M.S., Chemical Engineering, University of Arkansas Executive M.B.A, Louisiana State University NACD Directorship Certification through the NACD Directorship Certification program NACD CERT Certificate, Cyber-Risk Oversight.

Dr. Bates has been a member of the Board since 2011, serving as Chair of the Human Capital Management and Compensation Committee since 2014. Dr. Bates has been an adjunct professor in the Finance Department at Texas Christian University since 2011, teaching in the MBA program at the Neeley School of Business and serving on the board of the Ralph Lowe Energy Institute. He also teaches Geopolitics and Energy in the Master of Supply Chain program and Corporate Finance and Valuation in the Master of Strategic Management Consulting at SKEMA Business School in France. Previously, Dr. Bates served as a Managing Director and Senior Advisor of Lime Rock Management LP, an energy-focused private equity firm. He has also held executive positions, including CEO of Weatherford Enterra, Inc., and Senior Vice President and President of the Discovery Group at Baker Hughes Incorporated, where he was responsible for the post-acquisition integration of Western Atlas, an oilfield services company. He also spent 15 years with Schlumberger in both domestic and international locations. Dr. Bates began his career with Shell Oil Company, where he conducted drilling research. Dr. Bates has been a personal investor and/or a corporate investor in more than a dozen oil service technology startups. Other Current Public Boards: SSR Mining, Inc. (NASDAQ/TSX: SSRM) Vantage Drilling International (Euronext Growth Oslo: VDI) Former Public Boards: Independence Contract Drilling, Inc. (OTC: ICIDQ) Weatherford International Plc (NASDAQ: WFRD) Tidewater, Inc. (NYSE: TDW) Alacer Gold Corporation (TSX: ASR) Hercules Offshore, Inc. (OTC: HEROQ) T-3 Services, Inc. (NASDAQ: TTES) Education: Ph.D., Mechanical Engineering, University of Michigan

Mr. Garcia has served as Chair of the Audit Committee since June 2025 and as a member of the Board and the Audit Committee since May 2023. He also served on the Nominating, Governance, and Sustainability Committee from May 2023 to June 2025. Mr. Garcia previously served as Executive Vice President and Chief Financial Officer at BrandSafway, a provider of industrial services solutions to commercial, industrial, and infrastructure markets, from October 2020 to May 2023. Mr. Garcia retired after his tenure at BrandSafway. Prior to BrandSafway, Mr. Garcia served as Executive Vice President and Chief Financial Officer of Weatherford International (NASDAQ: WFRD), an oil services company, from January 2020 to August 2020, and Executive Vice President and Chief Financial Officer of Visteon Corporation (NASDAQ: VC), a provider of automotive cockpit electronics, from 2016 to October 2019. Mr. Garcia also served as acting Chief Financial Officer of Halliburton Company (NYSE: HAL), where he progressed through a variety of leadership positions, including Chief Accounting Officer, Treasurer and Senior Vice President, Investor Relations. For the period August 2020 to October 2020 and October 2019 to January 2020, Mr. Garcia was self-employed. Other Current Public Boards: Bausch Health Companies, Inc. (NYSE: BHC) Mueller Water Products, Inc. (NYSE: MWA) Former Public Boards: Dana, Inc. (NYSE: DAN) Jan.-June 2025 Keane Group, Inc. (NYSE: FRAC) Education: B.S., University of the Philippines Master's, Business, Purdue University.

Ms. John has been a member of the Board since March 2024 and serves as a member of the Audit Committee and the Nominating, Governance, and Sustainability Committee. Ms. John has served as an energy industry advisor focused on clean energy business development and commercialization strategies since October 2020. Previously, from January 2021 to September 2022, Ms. John served as Director of Innovation and Strategy for New Energy Ventures, a business development group focused on commercializing innovative technologies, markets, and business models, at The Williams Companies, Inc. (NYSE: WMB). Prior to that, she held various leadership positions at BP p.l.c. (NYSE/LSE: BP), a global oil and gas company, over a 27-year period, including Vice President of Marketing and Supply for NGLs, Senior Vice President of Marketing and Origination, and Director of Structured Products, where she focused on renewable fuels development. Former Public Boards: Parkland Corporation (TSX: PKI) Aug. 2021-Oct. 2025 Education: B.S., Chemical Engineering, University of Houston M.B.A, Northwestern University NACD Directorship Certification through the NACD Directorship Certification program NACD CERT Certificate, Cyber-Risk Oversight CERT Certification in Cybersecurity issued by the Carnegie Mellon University Software Engineering Institute.

Mr. Williams has been a member of the Board since March 2021, serving on both the Audit Committee and the Human Capital Management and Compensation Committee. He brings over three decades of leadership experience across various industries, including chemicals, materials, and industrial sectors. Most recently, Mr. Williams served as the Chief Executive Officer of Nexeo Plastics Holdings, Inc., a global plastics distributor, from April 2019 to June 2020, after which he retired. Before being named Chief Executive Officer, Mr. Williams served as Executive Vice President of Nexeo Solutions, Inc.. Previously, Mr. Williams served as President of Momentive Global Sealants, a global specialty sealants business, and President of Momentive Performance Materials, a silicone specialty materials business. Earlier in his career, Mr. Williams spent 22 years serving in industrial and material business leadership roles at General Electric Company and led businesses globally in the Americas, Europe, and Asia across a broad sector of markets. Mr. Williams has also served as Executive Chair of the Board of Managers of Covia Holdings LLC (Covia), a provider of minerals-based solutions serving the industrial and energy markets, since January 2022. He previously served as Board Chair, from December 2020 to December 2021, and Acting Chief Executive Officer of Covia from June 2021 to December 2021. Other Current Public Boards: Kirby Corporation (NYSE: KEX) Former Public Boards: Marathon Oil Corporation (NYSE: MRO) Feb. 2023-Nov. 2024 (acquired by ConocoPhillips) Education: B.S., Electrical Engineering, Purdue University M.B.A., University of California, Berkeley NACD CERT Certificate, Cyber-Risk Oversight.

Ms. Sloat has been a member of the Board since June 2025 and serves as a member of the Audit Committee and the Nominating, Governance and Sustainability Committee. Ms. Sloat most recently served as Chair of the Board, President, and Chief Executive Officer of American Electric Power, an investor owned electric utility company with the nation's largest electric transmission network, from October 2023 until February 2024, subsequent to assuming the President's role in September 2022 and serving as the President and Chief Executive Officer from January 2023 through September 2023. She led the company's energy transition, expanding its renewable energy generation portfolio and its development of new offerings. Ms. Sloat has been retired since February 2024 and brings over 23 years of experience at American Electric Power where she also served as Chief Financial Officer from January 2021 through August 2022 and Senior Vice President -Treasury and Risk, from January 2019 to December 2020 and from January 2013 to April 2016, leading multiple finance teams including investor relations. Additionally, she served as President and Chief Operating Officer of AEP Ohio, a subsidiary of American Electric Power serving 1.5 million customers. Other Current Public Boards: Jacobs Solutions, Inc. (NYSE: J) Former Public Boards: Evoqua Water Technologies Corporation (NYSE: AQUA) May 2022-May 2023 (acquired by Xylem Inc.) Park National Corporation (NYSE: PRK) 2015-April 2021 Education: B.S., The Ohio State University M.B.A., The Ohio State University MIT & The National Academy for Nuclear Training Reactor Technology Course.

Kurt Hallead has served as our Vice President - Investor Relations and Treasurer since March 2025. Prior to joining TETRA, he served as Head of Global Energy for The Benchmark Company, LLC from December 2022 to February 2025. Before that, Mr. Hallead co-founded Legacy League, Inc. in 2021 and served as CEO until December 2022, where he focused on developing proprietary digital marketing and revenue strategies for university athletic departments. From 2001 to 2021, Mr. Hallead served in various energy research leadership roles at RBC Capital Markets, most recently as Head of Global Energy Research. Mr. Hallead received his B.A. degree in Finance from Michigan State University and pursued a Master of Science in Sports Management from Northwestern University.

Katherine K. Kokenes has served as our Vice President and Chief Accounting Officer since September 2025. Prior to joining TETRA, she served in several senior finance positions with increasing responsibilities with Independence Contract Drilling, Inc., a provider of land-based contract drilling services for oil and natural gas producers in the United States, from 2013 until she joined the Company. Most recently, she served as Vice President and Chief Accounting Officer beginning in May 2020. Prior to that, she held key positions including Director of Financial Reporting and Corporate Controller. Earlier in her career, from 1996 to 2013, she held a series of progressively senior accounting roles at Nabors Industries, Ltd. Ms. Kokenes received her Bachelor of Business Administration in Accounting from the University of Texas at Arlington and is a Certified Public Accountant.

Ms. Alicia P. Boston Shoemake has served as our General Counsel since August 2021, as our Chief Compliance Officer since August 2020, and as a Senior Vice President since February 2025. Ms. Boston leads our global legal and compliance functions with oversight of all legal affairs, compliance, and ethics. She has over 25 years of combined legal experience in corporate law and governance, contracts, strategic transactions and managing litigation. From July 2009 to August 2021, she served in various in-house counsel roles in our legal department, with increasing areas of responsibility. Prior to joining TETRA, Ms. Boston practiced law at private law firms in corporate and securities law and also worked as in-house corporate counsel at TOTAL Petrochemicals USA, a corporate subsidiary of publicly-traded TOTAL S.A. Ms. Boston holds a Juris Doctor with honors from Texas Southern University, a BBA in International Business from The University of Texas at Austin, and executive education governance certifications from Stanford University as well as The Wharton School. She has been a member of the State Bar of Texas since 1997.