X0306 4 2013-03-11 0 0000098222 TIDEWATER INC TDW 0001197253 TAYLOR DEAN E C/O TIDEWATER INC. 601 POYDRAS ST., SUITE 1900 NEW ORLEANS LA 70130 1 0 0 0 Common Stock 2013-03-11 4 M 0 51419 27.92 A 271327 D Common Stock 2013-03-11 4 S 0 39148 46.3909 D 232179 D Common Stock 4699.38 I By Trustee Common Stock 3957 I As Custodian for Children Common Stock 4582 I By Trust Stock Options (Right to Buy) 27.92 2013-03-11 4 M 0 51419 0 D 2004-03-12 2013-03-12 Common Stock 51419 0 D This transaction was effected pursuant to a Rule 10b5-1 trading plan previously entered into by the reporting person. This transaction was executed in multiple trades at prices ranging from $46.14 to $46.60. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected. Acquired on a periodic basis by the Trustee of the Tidewater Inc. 401(k) Savings Plan. Includes shares acquired for the account through February 28, 2013. The reporting person disclaims beneficial ownership of these shares, and this report should not be deemed an admission that the reporting person is the beneficial owner of these shares for purposes of section 16 or any other purpose. The options vested in three equal annual installments beginning on the date indicated. Bruce D. Lundstrom as Agent and Attorney-in-Fact for Dean E. Taylor 2013-03-13