Atlas Announces Shareholder Meeting Date In Connection With Poseidon Acquisition; Will Hold Its Annual Meeting Of Shareholders On February 24, 2023

 Atlas Corp. ("Atlas" or the "Company") (NYSE:ATCO) announced that it will hold its Annual Meeting of Shareholders on February 24, 2023 (the "Annual Meeting").  At the Annual Meeting, Atlas common shareholders will be asked to, among other matters, consider and vote upon a proposal to adopt and approve the previously announced Agreement and Plan of Merger (the "Merger Agreement") among Atlas, Poseidon Acquisition Corp. and Poseidon Merger Sub, Inc., and the transactions contemplated by the Merger Agreement.  The completion of the transactions contemplated by the Merger Agreement remains subject to closing conditions described in Atlas's Proxy Statement filed with the U.S. Securities and Exchange Commission (the "SEC") on January 9, 2023, including receipt of common shareholder approval at the Annual Meeting.

The Annual Meeting will be held virtually at 2:00 p.m., London Time at www.virtualshareholdermeeting.com/ATCO2023, and all common shareholders of record as of the close of business on January 9, 2023 will be entitled to vote at the Annual Meeting.   A copy of the Proxy Statement is being mailed to all Atlas shareholders of record as of the close of business on January 9, 2023 and common shareholders may vote by mailing their proxy cards or by submitting their proxy online or by telephone. The Proxy Statement has been posted to the Company's website, atlascorporation.com, and can also be accessed on the SEC's website at www.sec.gov.