TETRA TECHNOLOGIES INC

proxy statement in the near term. KEY FACTS ABOUT TETRA • Outperformance and Sustained Returns: Since the Board appointed Brady Murphy as Chief Executive Officer in 2019, TETRA has significantly outperformed relevant industry indices and produced a total shareholder return of approximately 60%. The current five-year total shareholder return for TETRA is 1117%, versus the S&P Small Cap 600 Capped Energy index’s returns of 279% and the Russell 2000 index’s returns of 100%.3 • Differentiated, Long-term Strategy: TETRA’s long-term strategy involves continuing to capitalize on the growing synergies that exist between our Completion Fluids & Products segment and Water & Flowback Services segment. The Company is systematically executing on this strategy with clear progress forward, as can be seen in our results: o Completion Fluids & Products Segment continues to post strong results and has built a robust backlog of deepwater projects, including a recently added significant multi-well, multi-year deepwater contract in Brazil. In addition, as previously announced, we have continued to expand our offerings by vertically integrating and developing our bromine assets to enhance margins, reduce dependence on third-party suppliers, and increase production volumes. o Water & Flowback Services Segment has been well-positioned to benefit from customer adoption of our new automation technologies and emerging desalination opportunities based on current discussions with an array of prospective customers who have entered into non-disclosure agreements. In addition, we recently announced a significant milestone for TETRA Oasis TDS, our proprietary water treatment and desalination technology that can be used for beneficial re-use and mineral extraction. • Disciplined Capital Allocation: The Board and management have exercised disciplined capital allocation and use of cash flow to expand high-growth potential strategic initiatives over time, such as battery storage and produced water opportunities while achieving our lowest leverage ratio to date. Furthermore, we have maintained operational efficiency, as demonstrated by our record of Return on Net Capital Employed ("RONCE"), which has averaged 17.8% over the last two years, up from 13.4% in 2022.4 3 TETRA’s five-year total shareholder returns, inclusive of dividends were calculated through the close of trading on March 24, 2025. Mr. Murphy’s total shareholder return was calculated using the same criteria with an effective date as of May 2, 2019, through the close of trading on March 24, 2025. 4 Calculated based on the average Return on Net Capital Employed (RONCE) for 2024 and 2023. RONCE is defined as Adjusted EBIT divided by average net capital employed. Adjusted EBIT is defined as net income (loss) before taxes and discontinued operations, interest, and certain non-cash charges, and non-recurring adjustments. Net capital employed is defined as assets, excluding assets associated with discontinued operations, plus impaired assets, less cash and cash equivalents and restricted cash, and less current liabilities, excluding current liabilities associated with discontinued operations. Average net capital employed is calculated as the average of the beginning and ending

4 • Board Refreshment: Under the leadership of Chair Jay Glick, the Board has continued to undergo meaningful, well-timed refreshment. This has resulted in a well-rounded Board that possesses experience in areas such as capital allocation, corporate governance, energy services, industrial chemicals, strategic planning and transactions. The Company’s approach to director refreshment has ensured the Board retains institutional knowledge and important commercial relationships as it integrates new independent members. • Governance Best Practices: Further, the Board has adopted governance best practices, including oversight of management and Board succession planning through the Human Capital Management and