脂鲤技术美股招股说明书(2026-06-04版)

10,810,811 Shares TETRA Technologies, Inc. Common Stock We are offering 10,810,811 shares of our common stock, par value $0.01 per share (“common stock”). Unless otherwise stated or the contextotherwise indicates, all references to “TETRA,” “TETRA Technologies,” “registrant,” “ourcompany,” “we,” “our,” “us” or similar references refer toTETRA Technologies, Inc. and its consolidated subsidiaries. Our common stock is listed on The New York Stock Exchange under the symbol “TTI.” The last reported sales price of our common stock on TheNew York Stock Exchange on June1, 2026 was $10.36 per share. Investing in our common stock involves risks. See “RiskFactors” on pageS-12. Per ShareTotalPrice to Public$9.25$100,000,001.75Underwriting Discounts and Commissions(1)$0.50875$5,500,000.10Proceeds to TETRA Technologies, Inc.(2)$8.74125$94,500,001.65 (1)We refer you to “Underwriting” beginning on page S-25 of this prospectus supplement for additional information regarding underwritingcompensation.(2)Before expenses. We have granted the underwriters the option to purchase up to an additional 1,621,621 shares of common stock solely to cover anyover-allotments on the same terms and conditions set forth above within 30days from the date of this prospectus supplement. Delivery of the shares of common stock will be made on or about June4, 2026. Neither the U.S. Securities and Exchange Commission nor any state securities commission has approved ordisapproved of these securitiesor determined if this prospectus supplement is truthful or complete. Any representation to the contrary is a criminal offense. Lead Book-Running Manager J.P. Morgan Book-Running Manager Jefferies Co-Managers Berenberg The date of this prospectus supplement is June2, 2026. Table of Contents TABLE OF CONTENTS PROSPECTUSSUPPLEMENT ABOUT THIS PROSPECTUS SUPPLEMENTTRADEMARKS, SERVICE MARKS AND TRADE NAMESCAUTIONARY STATEMENT REGARDING FORWARD-LOOKING STATEMENTSSUMMARYTHE OFFERINGSUMMARY HISTORICAL CONSOLIDATED FINANCIAL DATARISK FACTORSUSE OF PROCEEDSDIVIDEND POLICYCAPITALIZATIONCERTAIN ERISA CONSIDERATIONSMATERIAL U.S. FEDERAL INCOME TAX CONSIDERATIONS FOR NON-U.S. HOLDERSUNDERWRITINGLEGAL MATTERSEXPERTSWHERE YOU CAN FIND MORE INFORMATIONINCORPORATION BY REFERENCE PROSPECTUSDATEDMAY22, 2025 ABOUT THIS PROSPECTUSINCORPORATION BY REFERENCE WHERE YOU CAN FIND MORE INFORMATION CAUTIONARY STATEMENT REGARDING FORWARD-LOOKING STATEMENTSSUMMARYRISK FACTORSUSE OF PROCEEDSDESCRIPTION OF CAPITAL STOCKDESCRIPTION OF DEBT SECURITIES Table of Contents ABOUT THIS PROSPECTUS SUPPLEMENT This document is in two parts. The first part is this prospectus supplement, which describes the specific terms of this offering. The second partcontains an accompanying primary base prospectus relating to sales of shares of common stock and other securities by TETRA Technologies, Inc. andgives more general information, some of which may not apply to this offering. Generally, when we refer to the prospectus, we are referring to thisprospectus supplement and the accompanying base prospectus combined. Unless otherwise indicated, capitalized terms used but not defined herein havethe meaning assigned to them in the registration statement of which this prospectus supplement forms a part. You should read the entire prospectussupplement, as well as the accompanying base prospectus and the documents incorporated by reference that are described under “Incorporation byReference” in this prospectus supplement. To the extent that any statement we make in this prospectus supplement is inconsistent with statements madein the accompanying base prospectus or any documents incorporated by reference herein, you should rely on the information contained in thisprospectus supplement, which will be deemed to modify or supersede those made in the accompanying base prospectus or documents incorporated byreference herein or therein. You should rely only on the information included or incorporated by reference in this prospectus supplement and the accompanying baseprospectus prepared by us or on behalf of us or to which we have referred you. Neither we, the underwriters nor any of our or their representatives haveauthorized any other person to provide you with information different from that included or incorporated by reference in this prospectus supplement andthe accompanying base prospectus. If anyone provides you with different or inconsistent information, you should not rely on it. Neither we nor theunderwriters are making an offer to sell these securities in any jurisdiction where an offer or sale is not permitted. The information in this prospectussupplement, and the information in the accompanying base prospectus or contained in any document incorporated by reference is accurate only as of thedate of such prospectus or document incorporated by reference, regardless of the time of delivery of this prospectus supplement or any sale of ourcommon stock. Our business, financial condition,