Atlantic Union Bankshares Corp

The Board of Directors (the “Board”) of Atlantic Union Bankshares Corporation is furnishing you with this proxy statement to solicit proxies on its behalf to be voted at our 2026 annual meeting of shareholders, or any adjournments or postponements of the meeting. As used in this proxy statement, the terms “the Company,” “we,” “us” and “our” refer to Atlantic Union Bankshares Corporation and its subsidiaries. Additionally, references to the “Bank” refer to Atlantic Union Bank.

Proxy Materials

We mailed to most of our shareholders a Notice of Internet Availability of our Proxy Materials (the “Notice of Internet Availability”) with instructions on how to access our proxy materials over the Internet and how to vote. The Notice of Internet Availability or, in some cases, this proxy statement, and the accompanying form of proxy, was first mailed to shareholders on or about March 25, 2026. By furnishing proxy materials over the Internet, we are able to reduce the printing and mailing costs of this solicitation and help conserve natural resources. If you receive the Notice of Internet Availability but would still like to receive paper copies of the proxy materials, please follow the instructions on the Notice of Internet Availability.

Website

Website references throughout this proxy statement are provided for convenience only, and the content on the referenced websites is not incorporated by reference into this proxy statement.

ATLANTIC UNION BANKSHARES |2026 PROXY STATEMENT 3