Elijio V. Serrano will retire as Senior Vice President and Chief Financial Officer of TETRA Technologies, Inc., effective March 31, 2026. Matthew J. Sanderson, currently the Executive Vice President and Chief Commercial Officer, will succeed Mr. Serrano as CFO upon his retirement. Mr. Serrano will remain with the company as a non-executive employee and advisor to the CEO and CFO through April 2, 2027, at an annual salary of $125,000. Mr. Sanderson's compensation package will increase upon his appointment, including a base salary of $490,000, a 90% target annual incentive, and a $925,000 long-term award target. Mr. Sanderson's change of control agreement will be amended to provide benefits equal to 2.5 times his annual base salary and target bonus.