TETRA TECHNOLOGIES INC 10-Q

Item 5. Other Information. Rule 10b5-1 Trading Arrangements During the three months ended June 30, 2026, none of the Company’s directors or officers of TETRA adopted or terminated a “Rule 10b5-1 trading arrangement” or “non-Rule 10b5-1 trading arrangement,” as each term is defined in Item 408(a) of Regulation S-K. Item 6. Exhibits. Exhibits: 3.1 Amended and Restated Certificate of Incorporation of TETRA Technologies, Inc. (incorporated by reference to Exhibit 3.1 to the Company’s Current Report on Fo rm 8 -K filed on May 25, 2023 (SEC File No. 001-13455)). 3.2 Certificate of Designation of Series A Junior Participating Preferred Stock (incorporated by reference to Exhibit 3.1 to the Company’s Annual Report on Form 10-K filed on February 25, 2026 (SEC File No. 001-13455)). 3.3 Second Amended and Restated Bylaws of TETRA Technologies, Inc. (incorporated by reference to Exhibit 3.2 to the Company’s Current Report on Form 8-K filed on May 25, 2023 (SEC File No. 001-13455)). 10.1 Transition Agreement, dated April 1, 2026, between TETRA Technologies, Inc. and Elijio V. Serrano (incorporated by reference to Exhibit 10.1 to the Company’s Current Report on Form 8-K/A filed on April 2, 2026 (SEC File No. 001-13455)). 10.2+ Master Services Agreement, dated as of June 12, 2026, by and between TETRA Bromine Project LLC and Diversified Construction & Design, L.L.C. (incorporated by reference to Exhibit 10.1 to the Company’s Current Report on Form 8-K filed on June 15, 2026 (SEC File No. 001-13455)). 31.1* Certification Pursuant to Rule 13a-14(a) or 15d-14(a) of the Exchange Act, As Adopted Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002. 31.2* Certification Pursuant to Rule 13a-14(a) or 15d-14(a) of the Exchange Act, As Adopted Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002. 32.1** Certification Furnished Pursuant to 18 U.S.C. Section 1350, As Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002. 32.2** Certification Furnished Pursuant to 18 U.S.C. Section 1350, As Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002. 101.SCH++ XBRL Taxonomy Extension Schema Document. 101.CAL++ XBRL Taxonomy Extension Calculation Linkbase Document. 101.DEF++ XBRL Taxonomy Extension Definition Linkbase Document. 101.LAB++ XBRL Taxonomy Extension Label Linkbase Document. 101.PRE++ XBRL Taxonomy Extension Presentation Linkbase Document. 104* Cover Page Interactive Data File - the cover page interactive data file does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL documents * Filed with this report. ** Furnished with this report. + Certain exhibits and schedules to this exhibit have been omitted pursuant to Item 601(a)(5) of Regulation S-K. The registrant agrees to furnish supplementally a copy of any omitted exhibit or schedule to the Securities and Exchange Commission or its staff upon request. ++ Attached as Exhibit 101 to this report are the following documents formatted in XBRL (Extensible Business Reporting Language): (i) Consolidated Statements of Operations for the three and six-month periods ended June 30, 2026 and 2025; (ii) Consolidated Statements of Comprehensive Income for the three and six-month periods ended June 30, 2026 and 2025; (iii) Condensed Consolidated Balance Sheets as of June 30, 2026 and December 31, 2025; (iv) Consolidated Statements of Equity for the six-month periods ended June 30, 2026 and 2025; (v) Consolidated Statements of Cash Flows for the six-month periods ended June 30, 2026 and 2025; and (vi) Notes to Consolidated Financial Statements for the six months ended June 30, 2026. 31 SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized. TETRA Technologies, Inc. Date: August 3, 2026 By: /s/Brady M. Murphy Brady M. Murphy President and Chief Executive Officer Principal Executive Officer Date: August 3, 2026 By: /s/Matthew J. Sanderson Matthew J. Sanderson Executive Vice President and Chief Financial Officer Principal Financial Officer Date: August 3, 2026 By: /s/Katherine Kokenes Katherine Kokenes Vice President and Chief Accounting Officer Principal Accounting Officer 32