Completion of Acquisition or Disposition of Assets. As discussed in the Introductory Note, on the Closing Date, Select LLC completed the previously announced Pilot Water Acquisition. Pursuant to the Pilot Water Acquisition Agreement, Select LLC acquired all of the issued and outstanding membership interests in Pilot Water, a water midstream company with produced water disposal and pipeline infrastructure in the Delaware Basin, from the Sellers in exchange for aggregate consideration consistin…

of the Company’s Current Report on Form 8-K filed with the SEC on October 13, 2026, Select Holdings entered into the New Credit Agreement, among Select Holdings, as borrower, SES Holdings, as parent, JPMorgan Chase Bank, N.A., as administrative agent, and the lenders and issuing banks party thereto from time to time, which provides for the New Revolving Credit Facility, including a $50.0 million letter of credit sublimit. The New Revolving Credit Facility became effective on November 2, 2026,…

Termination of a Material Definitive Agreement. Sustainability-Linked Credit Facility On January 24, 2025, SES Holdings, LLC (“SES Holdings”), the Company’s direct subsidiary, and Select LLC entered into a $550.0 million sustainability-linked senior secured credit facility (the “Sustainability-Linked Credit Facility”), by and among SES Holdings, as parent, Select LLC, as borrower, certain of SES Holdings’ subsidiaries, as guarantors, each of the lenders party thereto and Bank of America, N.A.…

by reference. The issuance of the Equity Consideration to Pilot OFS was completed in reliance upon the exemption from the registration requirements of the Securities Act of 1933, as amended (the “Securities Act”), pursuant to Section 4(a)(2) thereof.

Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement. New Revolving Credit Facility As previously disclosed in

Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant. On October 21, 2026, Select Water Holdings LLC (the “Issuer”), a subsidiary of Select Water Solutions, Inc. (the “Company”), issued $900 million aggregate principal amount of its 7.625% Senior Notes due 2034 (the “Notes”). The Notes were issued pursuant to the indenture, dated as of October 21, 2026 (the “Indenture”), by and among the Issuer, the guarantors named therein (the “Gu…

Entry into a Material Definitive Agreement. The information contained in

Other Events. On October 14, 2026, Select Water Holdings LLC (the “Issuer”), a subsidiary of Select Water Solutions, Inc. (the “Company”), and the subsidiary guarantors named therein (the “Subsidiary Guarantors”) entered into a purchase agreement (the “Purchase Agreement”) with J.P. Morgan Securities LLC and BofA Securities, Inc., as representatives of the several initial purchasers named therein (collectively, the “Initial Purchasers”), pursuant to which the Issuer agreed to sell to the Init…

Entry into a Material Definitive Agreement. On October 13, 2026, Select Water Holdings LLC (“Select Holdings”), an indirect subsidiary of the Company, executed a Credit Agreement (the “New Credit Agreement”), among Select Holdings, as borrower, SES Holdings, LLC (“SES Holdings”), as parent, JPMorgan Chase Bank, N.A., as administrative agent, and the lenders and issuing banks party thereto from time to time. The New Credit Agreement provides for a senior secured revolving credit facility of up…

by reference. This Current Report on Form 8-K provides (i) unaudited pro forma condensed combined statements of operations of the Company for the year ended December 31, 2025 and the six months ended June 30, 2026, giving effect to the Pilot Water Acquisition (including the issuance of shares of the Company’s common stock as a portion of the consideration therefor) and the related financing transactions, including the Notes Offering, borrowings under the New Revolving Credit Facility, the rep…

Regulation FD Disclosure. On October 13, 2026, Select Holdings issued a press release announcing that, subject to market conditions, Select Holdings intends to offer (the “Notes Offering”) for sale in a private placement pursuant to Rule 144A and Regulation S under the Securities Act to eligible purchasers $800 million aggregate principal amount of Senior Notes due 2034 (the “Notes”). A copy of the press release is attached hereto as Exhibit 99.1 and is incorporated herein by reference. 3 Thi…

Other Events. Pilot Water Financial Statements This Current Report on Form 8-K provides the Unaudited Condensed Consolidated Financial Statements of Pilot Water as of June 30, 2026 and December 31, 2025 and for the six months ended June 30, 2026 and 2025 and accompanying notes thereto, attached as Exhibit 99.2 hereto. This Current Report on Form 8-K also provides the historical audited consolidated financial statements of Pilot Water as of and for the years ended December 31, 2025 and 2024, a…

Entry into a Material Definitive Agreement. Membership Interest Purchase Agreement On September 24, 2026, Select Water Solutions, LLC (“Purchaser”), an indirect subsidiary of Select Water Solutions, Inc. (NYSE: WTTR) (the “Company”), entered into a Membership Interest Purchase Agreement (the “Purchase Agreement”) with Pilot OFS Holdings LLC (“Pilot OFS”), Minerva Infrastructure IA LLC (“Minerva” and, together with Pilot OFS, each a “Seller” and collectively the “Sellers”) and certain other pa…

The issuance of the Equity Consideration to Pilot OFS will be completed in reliance upon the exemption from the registration requirements of the Securities Act of 1933, as amended (the “Securities Act”), provided by Section 4(a)(2) thereof as a transaction by an issuer not involving any public offering. The Company will rely on this exemption from registration based in part on representations made by Pilot OFS.

OF THIS CURRENT REPORT, INCLUDING EXHIBIT 99.1 ATTACHED HERETO, SHALL NOT BE DEEMED “FILED” FOR THE PURPOSES OF SECTION 18 OF THE SECURITIES EXCHANGE ACT OF 1934, OR OTHERWISE SUBJECT TO THE LIABILITIES OF SUCH SECTION, NOR SHALL IT BE DEEMED INCORPORATED BY REFERENCE INTO ANY REGISTRATION STATEMENT OR OTHER FILING PURSUANT TO THE SECURITIES ACT OF 1933, EXCEPT AS OTHERWISE EXPRESSLY STATED IN SUCH FILING. 2 SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the R…

Executive Vice President and Chief Commercial Officer — Michael C. Skarke: Mr. Skarke's role was expanded and his title changed, but he remains an executive officer with a strategic focus on commercialization and business development.

OF THIS CURRENT REPORT, INCLUDING EXHIBIT 99.1 ATTACHED HERETO, SHALL NOT BE DEEMED “FILED” FOR THE PURPOSES OF SECTION 18 OF THE SECURITIES EXCHANGE ACT OF 1934, OR OTHERWISE SUBJECT TO THE LIABILITIES OF SUCH SECTION, NOR SHALL IT BE DEEMED INCORPORATED BY REFERENCE INTO ANY REGISTRATION STATEMENT OR OTHER FILING PURSUANT TO THE SECURITIES ACT OF 1933, EXCEPT AS OTHERWISE EXPRESSLY STATED IN SUCH FILING. 2 SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the R…

Other Events As previously disclosed in the Current Report on Form 8-K filed with the Securities and Exchange Commission (the “Commission”) on February 23, 2026, Select Water Solutions, Inc. (the “Company”) and J.P. Morgan Securities LLC and BofA Securities, Inc., as representatives of the several underwriters named in Schedule I thereto (collectively, the “Underwriters”), entered into an underwriting agreement, dated February 19, 2026 (the “Underwriting Agreement”), pursuant to which the Com…

Other Events On February 19, 2026, the Company and J.P. Morgan Securities LLC and BofA Securities, Inc., as representatives of the several underwriters named in Schedule I thereto (collectively, the “Underwriters”), entered into an underwriting agreement (the “Underwriting Agreement”), pursuant to which the Company agreed to sell to the Underwriters, and the Underwriters agreed to purchase from the Company, subject to and upon the terms and conditions set forth therein, $175.0 million of its…

Regulation FD Disclosure On February 19, 2026, Select Water Solutions, Inc. (the “Company”) announced the pricing of an underwritten public offering of $175.0 million of its Class A common stock, par value $0.01 per share, pursuant to a registration statement on Form S-3 (File No. 333-293586) (the “Registration Statement”) filed previously with the U.S. Securities and Exchange Commission (the “Commission”) that became automatically effective upon filing on February 19, 2026, including the pro…

OF THIS CURRENT REPORT, INCLUDING EXHIBIT 99.1 ATTACHED HERETO, SHALL NOT BE DEEMED “FILED” FOR THE PURPOSES OF SECTION 18 OF THE SECURITIES EXCHANGE ACT OF 1934, OR OTHERWISE SUBJECT TO THE LIABILITIES OF SUCH SECTION, NOR SHALL IT BE DEEMED INCORPORATED BY REFERENCE INTO ANY REGISTRATION STATEMENT OR OTHER FILING PURSUANT TO THE SECURITIES ACT OF 1933, EXCEPT AS OTHERWISE EXPRESSLY STATED IN SUCH FILING. 2 SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the R…

OF THIS CURRENT REPORT, INCLUDING EXHIBIT 99.1 ATTACHED HERETO, SHALL NOT BE DEEMED “FILED” FOR THE PURPOSES OF SECTION 18 OF THE SECURITIES EXCHANGE ACT OF 1934, OR OTHERWISE SUBJECT TO THE LIABILITIES OF SUCH SECTION, NOR SHALL IT BE DEEMED INCORPORATED BY REFERENCE INTO ANY REGISTRATION STATEMENT OR OTHER FILING PURSUANT TO THE SECURITIES ACT OF 1933, EXCEPT AS OTHERWISE EXPRESSLY STATED IN SUCH FILING. 2 SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the R…

The company entered into severance agreements with several executive officers to standardize compensation arrangements and enhance protections.

OF THIS CURRENT REPORT, INCLUDING EXHIBIT 99.1 ATTACHED HERETO, SHALL NOT BE DEEMED “FILED” FOR THE PURPOSES OF SECTION 18 OF THE SECURITIES EXCHANGE ACT OF 1934, OR OTHERWISE SUBJECT TO THE LIABILITIES OF SUCH SECTION, NOR SHALL IT BE DEEMED INCORPORATED BY REFERENCE INTO ANY REGISTRATION STATEMENT OR OTHER FILING PURSUANT TO THE SECURITIES ACT OF 1933, EXCEPT AS OTHERWISE EXPRESSLY STATED IN SUCH FILING. 2 SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the R…

OF THIS CURRENT REPORT, INCLUDING EXHIBIT 99.1 ATTACHED HERETO, SHALL NOT BE DEEMED “FILED” FOR THE PURPOSES OF SECTION 18 OF THE SECURITIES EXCHANGE ACT OF 1934, OR OTHERWISE SUBJECT TO THE LIABILITIES OF SUCH SECTION, NOR SHALL IT BE DEEMED INCORPORATED BY REFERENCE INTO ANY REGISTRATION STATEMENT OR OTHER FILING PURSUANT TO THE SECURITIES ACT OF 1933, EXCEPT AS OTHERWISE EXPRESSLY STATED IN SUCH FILING. 2 SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the R…