WaterBridge Infrastructure LLC-A美股招股说明书(2026-08-18版)

This prospectus supplement amends and supplements the prospectus dated April 10, 2026, as supplemented or amended from timeto time (the “Prospectus”), which forms a part of our Registration Statement on Form S-1 (No. 333-294703). This prospectussupplement is being filed to update and supplement the information in the Prospectus with the information contained in Items 1.01and 8.01 of our Current Report on Form 8-K filed with the U.S. Securities and Exchange Commission on August 18, 2026 (the“Current Report”). Accordingly, we have attached the Current Report to this prospectus supplement. The Prospectus and this prospectus supplement relate to the offer and sale, from time to time, by the selling shareholders identifiedin the Prospectus of up to an aggregate of 83,250,000 Class A shares representing limited liability company interests (“Class Ashares”) in WaterBridge Infrastructure LLC, a Delaware limited liability company. Our Class A shares are listed on the New York Stock Exchange (the “NYSE”) and NYSE Texas, Inc. (“NYSE Texas”) under thesymbol “WBI.” The last reported sales price of our Class A shares on the NYSE on August 17, 2026 was $31.78 per Class A share. We are a “controlled company” within the meaning of the NYSE and NYSE Texas rules and, as a result, qualify for and rely onexemptions from certain corporate governance requirements. This prospectus supplement updates and supplements the information in the Prospectus and is not complete without, and may notbe delivered or utilized except in combination with, the Prospectus, including any amendments or supplements thereto. Thisprospectus supplement should be read in conjunction with the Prospectus and if there is any inconsistency between the informationin the Prospectus and this prospectus supplement, you should rely on the information in this prospectus supplement. INVESTING IN OUR CLASS A SHARES INVOLVES RISKS. SEE THE “RISK FACTORS” SECTION ON PAGE 5 OFTHE PROSPECTUS. Neither the U.S. Securities and Exchange Commission nor any state securities commission has approved or disapproved ofthese securities or passed upon the adequacy or accuracy of this prospectus. Any representation to the contrary is acriminal offense. Prospectus supplement dated August 18, 2026 UNITED STATESSECURITIES AND EXCHANGE COMMISSIONWashington, D.C. 20549 FORM 8-K CURRENT REPORTPursuant to Section 13 OR 15(d)of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 13, 2026 (Exact name of registrant as specified in its charter) Item 1.01.Entry into a Material Definitive Agreement. On August 18, 2026, WBI Operating LLC (the “Issuer”), a subsidiary of WaterBridge Infrastructure LLC (the “Company”),completed the previously announced private placement (the “Offering”) of an additional $150,000,000 aggregate principal amountof 6.500% Senior Notes due 2033 (the “New Notes”). The Offering was upsized from an initial offering size of $100,000,000aggregate principal amount of the New Notes. The Company intends to use the net proceeds from the Offering to repay a portion ofoutstanding borrowings under its revolving credit facility. The New Notes were offered as additional notes under the indenture,dated as of October 6, 2025 (the “Indenture”), pursuant to which the Issuer previously issued $600,000,000 in aggregate principalamount of 6.500% senior notes due 2033 (the “Existing Notes” and, together with the New Notes, the “Notes”). The New Noteshave substantially identical terms, other than issue date and issue price, as the Existing Notes and are treated as part of the sameseries as the Existing Notes for all purposes under the Indenture. The New Notes are guaranteed (the “Guarantees”), jointly and severally, on a senior unsecured basis by all of the Issuer’sexisting subsidiaries (collectively, the “Guarantors”). The New Notes and the Guarantees were issued and sold pursuant to an exemption from the registration requirements of theSecurities Act of 1933, as amended (the “Securities Act”), pursuant to Section 4(a)(2) thereunder. The New Notes were resoldwithin the United States only to qualified institutional buyers in reliance on Rule 144A under the Securities Act and outside theUnited States only to non-U.S. persons in reliance on Regulation S under the Securities Act. The New Notes and Guarantees havenot been registered under the Securities Act or applicable state securities laws and may not be offered or sold in the United Statesabsent registration or an applicable exemption from the registration requirements of the Securities Act and applicable state laws. At any time prior to October 15, 2028, the Issuer may on any one or more occasions redeem up to 40% of the aggregateprincipal amount of the Notes (including any additional notes) issued under the Indenture at a redemption price equal to 106.500%of the principal amount of the Notes redeemed, plus accrued and unpaid interest, if any, to, but excluding, the redemption date, wit