X0609 4 2026-08-12 0000098222 TIDEWATER INC TDW 0001452077 Rubio Samuel R false 842 WEST SAM HOUSTON PARKWAY NORTH SUITE 400 HOUSTON TX 77024 false true false false EVP, CFO & CAO 0 Common Stock, par value $0.001 2026-08-12 4 S 0 17705 91.56 D 33214 I See footnote Common Stock, par value $0.001 16650 D The transaction was executed in multiple trades at prices ranging from $91.07 to $92.12. The price reported above reflects the weighted average sale price. Upon request from the SEC staff, the issuer, or a security holder of the issuer, the Reporting Person hereby undertakes to provide the requesting party with full information regarding the number of shares and prices at which the transaction was effected. Reflects corrections with respect to shares that were previously inadvertently reported as owned directly by the Reporting Person that are instead held indirectly through the Rubio Family Trust. Represents shares held by the Rubio Family Trust, for which the Reporting Person is a co-trustee with his spouse and has shared voting and dispositive power with respect to the shares held by the trust. /s/ Daniel A. Hudson, Attorney-in-Fact 2026-08-14