Entry into a Material Definitive Agreement. Amended and Restated Sale and Purchase Agreement As previously disclosed, on February 22, 2026, the Company entered into a Sale and Purchase Agreement (the “ Original SPA ”), by and among Wilson Sons S.A. (“ Wilson Sons ”), Ultranav International II, S.A. (“ Ultranav ”), Remolcadores Ultratug Limitada (“ Remolcadores ”, together with Wilson Sons and Ultranav, the “ Sellers ”), the Target Companies, the Company, and Pan Marine do Brasil Ltda., a comp…

Regulation FD Disclosure. On August 31, 2026, the Company issued a press release announcing the completion of the Transaction. A copy of the press release is furnished as Exhibit 99.1 to this Current Report and is incorporated herein by reference as if fully set forth under this item. The information furnished pursuant to Item 7.01, including Exhibit 99.1, shall not be deemed to be “filed” for the purposes of Section 18 of the Securities Exchange Act of 1934, as amended (“ Exchange Act ”) or…

Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant. Banco do Brasil Loan and Replacement of Parent Company Guarantee On the Closing Date, the Company replaced Remolcadores and its affiliate as the new guarantor of the existing loan (the “ BB Loan ”) from BB, as lender, to Magallanes Navegação Brasileira S.A., a wholly owned subsidiary of WSUT (“ MNB ”), as borrower. The guarantor replacement was made pursuant to the Fifth Amendmen…

by reference. On the Closing Date, pursuant to the terms and conditions of the Amended and Restated SPA, the Company completed the Transaction in exchange for consideration consisting of an aggregate purchase price of USD $500 million, on a debt free, cash free basis. The purchase price was subject to customary adjustments as set forth in the Amended and Restated SPA, including (without limitation) a reduction for the Target Companies’ Closing Date indebtedness (net of cash), capex, transacti…

Results of Operations and Financial Condition. In accordance with the safe harbor provisions of the Private Securities Litigation Reform Act of 1995, Tidewater Inc. (the “Company”) notes that certain statements set forth in this Current Report on Form 8-K provide contain certain forward-looking statements which reflect our current view with respect to future events and future financial performance. Forward-looking statements are all statements other than statements of historical fact. All suc…

Other Events. As previously disclosed, on February 22, 2026, Tidewater Inc., a Delaware corporation (the “ Company ”), and certain of the Company’s subsidiaries (collectively, the “ Tidewater Parties ”), entered into a Sale and Purchase Agreement (the “ Sale and Purchase Agreement ”) to acquire all outstanding shares of Wilson Sons Ultratug Participações S.A. and Atlantic Offshore Services S.A. (collectively, the “ Target Companies ”) from Wilson Sons S.A., Ultranav International II, S.A. and…

The filing describes a stockholder approval of an amendment to the company's stock incentive plan, which is not related to any management change.

Results of Operations and Financial Condition. In accordance with the safe harbor provisions of the Private Securities Litigation Reform Act of 1995, Tidewater Inc. (the “Company”) notes that certain statements set forth in this Current Report on Form 8-K provide contain certain forward-looking statements which reflect our current view with respect to future events and future financial performance. Forward-looking statements are all statements other than statements of historical fact. All suc…

Director — Darron M. Anderson: Mr. Anderson decided not to stand for reelection as a Director of the Board.

Results of Operations and Financial Condition. In accordance with the safe harbor provisions of the Private Securities Litigation Reform Act of 1995, Tidewater Inc. (the “Company”) notes that certain statements set forth in this Current Report on Form 8-K provide contain certain forward-looking statements which reflect our current view with respect to future events and future financial performance. Forward-looking statements are all statements other than statements of historical fact. All suc…

Regulation FD Disclosure. On February 22, 2026, the Company issued a press release announcing that the Company had entered into a definitive agreement in connection with the Transaction. A copy of the press release is furnished as Exhibit 99.1 to this Current Report and is incorporated herein by reference as if fully set forth under this item. On February 22, 2026, the Company provided supplemental information regarding the Transaction in an investor presentation posted on its website. A copy…

Entry into a Material Definitive Agreement. On February 22, 2026, Tidewater Inc., a Delaware corporation (the “ Company ”), entered into a Sale and Purchase Agreement (the “ Sale and Purchase Agreement ” and, together with the other related documents, the “ Transaction Documents ”) between Wilson Sons S.A., Ultranav International II, S.A. and Remolcadores Ultratug Limitada (collectively, the “ Sellers ”), Wilson, Sons Ultratug Participações S.A. and Atlantic Offshore Services S.A. (collective…

Results of Operations and Financial Condition. In accordance with the safe harbor provisions of the Private Securities Litigation Reform Act of 1995, Tidewater Inc. (the “Company”) notes that certain statements set forth in this Current Report on Form 8-K provide contain certain forward-looking statements which reflect our current view with respect to future events and future financial performance. Forward-looking statements are all statements other than statements of historical fact. All suc…

Results of Operations and Financial Condition. In accordance with the safe harbor provisions of the Private Securities Litigation Reform Act of 1995, Tidewater Inc. (the “Company”) notes that certain statements set forth in this Current Report on Form 8-K provide contain certain forward-looking statements which reflect our current view with respect to future events and future financial performance. Forward-looking statements are all statements other than statements of historical fact. All suc…

Other Events. On August 4, 2025, the Company announced that its Board of Directors approved a share repurchase program, under which we are authorized to purchase up to $500.0 million of the Company’s common stock. The timing, manner, price and amount of any repurchases under the share repurchase program are determined by the Company in its discretion. Purchases may be completed through open market transactions, privately negotiated transactions, transactions structured through investment bank…

Entry into a Material Definitive Agreement. Indenture and the 2030 Notes On July 7, 2025, Tidewater Inc., a Delaware corporation (the “ Company ”), certain of the Company’s subsidiaries (the “ Guarantors ”), and Wilmington Trust, National Association, as trustee (the “ Trustee ”), entered into an indenture (the “ Indenture ”), pursuant to which the Company issued $650,000,000 in aggregate principal amount of the Company’s 9.125% Senior Notes due 2030 (the “ 2030 Notes ”). The 2030 Notes are u…

Termination of a Material Definitive Agreement. As described in

COO — Piers Middleton: The filing announces the internal promotion of Piers Middleton from Chief Commercial Officer to Chief Operating Officer, which is a succession event rather than a departure.

Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant. The information set forth under

Regulation FD Disclosure. On June 24, 2025, Tidewater Inc. (the “Company”) announced the pricing of its previously announced private offering (the “Offering”) of $650 million in aggregate principal amount of unsecured senior notes due 2030 (the “2030 Notes”). The 2030 Notes will bear interest at a rate of 9.125% per year and will mature on July 15, 2030. The 2030 Notes will be issued at par. The Notes are being offered only to persons reasonably believed to be qualified institutional buyers u…

Regulation FD Disclosure. Notes Offering On June 23, 2025, Tidewater Inc. (the “Company”) announced its intention to offer, subject to market conditions and other factors, $650,000,000 aggregate principal amount of senior notes due 2030 (the “Notes”) in a private offering (the “Offering”) exempt from the registration requirements of the Securities Act of 1933 (the “Securities Act”). The Notes are being offered only to persons reasonably believed to be qualified institutional buyers under Rule…

COO — David Darling: The filing describes an orderly, long-term planned succession for the COO with a transition period, rather than a sudden or adverse departure.

Results of Operations and Financial Condition. In accordance with the safe harbor provisions of the Private Securities Litigation Reform Act of 1995, Tidewater Inc. (the “Company”) notes that certain statements set forth in this Current Report on Form 8-K provide contain certain forward-looking statements which reflect our current view with respect to future events and future financial performance. Forward-looking statements are all statements other than statements of historical fact. All suc…

Results of Operations and Financial Condition. In accordance with the safe harbor provisions of the Private Securities Litigation Reform Act of 1995, Tidewater Inc. (the “Company”) notes that certain statements set forth in this Current Report on Form 8-K provide contain certain forward-looking statements which reflect our current view with respect to future events and future financial performance. Forward-looking statements are all statements other than statements of historical fact. All suc…

Other Events. On February 27, 2025, the Company announced that its Board of Directors approved a new share repurchase program, under which we are authorized to purchase up to $90.3 million of the Company’s common stock. The timing, manner, price and amount of any repurchases under the share repurchase program are determined by the Company in its discretion. Purchases may be completed through open market transactions, privately negotiated transactions, transactions structured through investmen…