Company: VRT
Filing Date: 2025-04-25
Form Type: DEF 14A
Source: 0001193125-25-094674
Chunk: 80

Company: Vertiv Holdings Co
Filing Date: 2025-04-25
Form: DEF 14A
Chunk 80
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 align='center'>**Important Notice Regarding the Availability of Proxy Materials for the Annual Meeting:

The Notice and Proxy Statement and Annual Report are available at www.proxyvote.com.**</div>

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V70462-P26340

### VERTIV HOLDINGS CO

#### Annual Meeting of Stockholders

#### June 18, 2025 11:00 AM ET

#### This proxy is solicited by the Board of Directors
**The stockholder(s) hereby appoint(s) David M. Cote, Giordano Albertazzi and Stephanie L. Gill, or any of them, as proxies (the "Proxies"), each with the power to appoint his or her substitute, and hereby authorize(s) them to represent and to vote, as designated on the reverse side of this ballot, all of the shares of Class A common stock of VERTIV HOLDINGS CO that the stockholder(s) is/are entitled to vote at the Annual Meeting of Stockholders to be held at 11:00 AM ET on June 18, 2025, virtually at www.virtualshareholdermeeting.com/VRT2025, and any adjournment or postponement thereof.

This proxy, when properly executed, will be voted in the manner directed herein. If no such direction is made, this proxy will be voted in accordance with the Board of Directors’ recommendations.

In their discretion, the Proxies are authorized to vote upon such other business as may properly come before the Annual Meeting.**

#### Continued and to be signed on reverse side