Company: VRT
Filing Date: 2025-04-25
Form Type: DEFA14A
Source: 0001193125-25-094689
Chunk: 0

Company: Vertiv Holdings Co
Filing Date: 2025-04-25
Form: DEFA14A
Chunk 0
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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. ) Filed by the Registrant ☒ 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 |

| ☒ | Definitive Additional Materials |

| ☐ | Soliciting Material Pursuant to §240.14a–12 |

Vertiv Holdings Co (Name of Registrant as Specified In Its Charter) (Name of Person(s) Filing Proxy Statement, if Other Than The Registrant) Payment of Filing Fee (Check the appropriate box):

| ☒ | No fee required |

| ☐ | Fee paid previously with preliminary materials |

| ☐ | Fee computed on table in exhibit required by Item 25(b) per Exchange Act Rules 
 14a-6(i)(1) and 0-11                                                           |

You invested in VERTIV HOLDINGS CO 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 stockholders’ meeting to be held on June 18, 2025.

Get informed before you vote

View the Notice and Proxy Statement and Annual Report online OR you can receive a free paper or email copy of the material(s) by requesting prior to June 4, 2025. If you would like to request a copy of the material(s) for this and/or future stockholders’ meetings, you may (1) visit www.ProxyVote.com, (2) call 1-800-579-1639 or (3) send an email to sendmaterial@proxyvote.com. If sending an email, please include your control number (indicated below) in the subject line. Unless requested, you will not otherwise receive a paper or email copy.

*Please check the meeting materials for any special requirements for meeting attendance.

Vote at www.ProxyVote.com

| THIS IS NOT A VOTABLE BALLOT                                                                                            
 This is an overview of the proposals being presented at                                                                 
 the upcoming stockholders’ meeting. Please follow the instructions on the reverse side to vote these