Company: TDDWW
Filing Date: 2025-04-24
Form Type: DEFA14A
Source: 0001104659-25-038702
Chunk: 0

Company: TIDEWATER INC
Filing Date: 2025-04-24
Form: DEFA14A
Chunk 0
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<div align='center'>UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 14A

Proxy Statement Pursuant to Section 14(a) of

the Securities Exchange Act of 1934 (Amendment No. )</div>

| Filed by the Registrant x                    |                 |
| Filed by a Party other than the Registrant ¨ |                 |
| Check the appropriate box:                   |                 |
| ¨                                            | Preliminary     
 Proxy Statement |

| ¨ | Confidential,                                                     
 for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) |
| ¨ | Definitive Proxy Statement                                        |
| x | Definitive Additional Materials                                   |
| ¨ | Soliciting Material under §240.14a-12                             |

<div align='center'>TIDEWATER INC.

(Name of Registrant as Specified in Its Charter)

(Name of Person(s) Filing Proxy Statement, if other than the Registrant)</div>

Payment of Filing Fee (Check the appropriate box):

| x | No fee required.            |
| ¨ | Fee paid previously         
 with preliminary materials. |

| ¨ | Fee computed on table                                                         
 in exhibit required by Item 25(b) per Exchange Act Rules 14a6(i)(1) and 0-11. |

| Your Vote Counts!                                                                                                                          
 *Please check the meeting materials for any special requirements for meeting attendance.                                                   
 Smartphone users                                                                                                                           
 Point your camera here and                                                                                                                 
 vote without entering a                                                                                                                    
 control number                                                                                                                             
 For complete information and to vote, visit www.ProxyVote.com                                                                              
 Control #                                                                                                                                  
 V73492-P30673                                                                                                                              
 TIDEWATER INC.                                                                                                                             
 2025 Annual Meeting                                                                                                                        
 Vote by June 4, 2025 11:59 PM ET.                                                                                                          
 You invested in TIDEWATER INC. and it’s time to vote!                                                                                      
 You have the right to vote on proposals being presented at the Annual Meeting. This is an important notice regarding the                   
 availability of proxy materials for the stockholder meeting to be held on June 5, 2025.                                                    
 Vote Virtually at the Meeting*                                                                                                             
 June 5, 2025                                                                                                                               
 8:00 a.m., Central Time                                                                                                                    
 Virtually at:                                                                                                                              
 www.virtualshareholdermeeting.com/TDW202