This report on Form 6-K of Atlas Corp., or this Report, is hereby
incorporated by reference into: the Registration Statement of Atlas Corp. filed with the Securities and Exchange Commission, (the “SEC”), on May 30, 2008 on Form F-3D (Registration No. 333-151329), as amended on February 28, 2020, the Registration Statement of Atlas Corp. filed with the SEC on March 31, 2011 on Form S-8 (Registration No. 333-173207), as amended on February 28, 2020, the Registration Statement of Atlas Corp. filed with the SEC on June 20, 2013 on Form S-8 (Registration No. 333-189493), as amended on February 28, 2020, the Registration Statement of Atlas Corp. filed with the SEC on April 24, 2012 on Form F-3 (Registration No. 333-180895), as amended on March 22, 2013 and February 28, 2020, the Registration Statement of Atlas Corp. filed with the SEC on April 29, 2014 on Form F-3 (Registration No. 333-195571), as amended on March 6, 2017, April 19, 2017 and February 28, 2020, the Registration Statement of Atlas Corp. filed with the SEC on November 28, 2014 on Form F-3
(Registration No. 333-200639), as amended on March 6, 2017, April 19, 2017 and February 28, 2020, the Registration Statement of Atlas Corp. filed with the SEC on November 28, 2014 on Form S-8 (Registration No. 333-200640), as amended on February 28, 2020, the Registration Statement of Atlas Corp. filed with the SEC on March 12, 2015 on Form F-3D (Registration No. 333-202698), as amended on February 28, 2020, the Registration Statement of Atlas Corp. filed with the SEC on June 24, 2016 on Form S-8 (Registration No. 333-212230), as amended on February 28, 2020, the Registration Statement of Atlas Corp. filed with the SEC on August 25, 2017 on Form F-3 (Registration No. 333-220176), as amended on February 28, 2020, the Registration Statement of Atlas Corp. filed with the SEC on December 21, 2017 on Form S-8 (Registration No. 333-222216), as amended on February 28, 2020, the Registration Statement of Atlas Corp. filed with the SEC on April 13, 2018 on Form F-3D (Registration No. 333-224291), as amended on February 28, 2020, the Registration Statement of Atlas Corp. filed with the SEC on April 13, 2018 on Form F-3 (Registration No. 333-224288), as amended on May 3, 2018, May 7, 2018 and February 28, 2020, the Registration Statement of Atlas Corp. filed with the SEC on September 28,
2018 on Form F-3 (Registration No. 333-227597), as amended on February 28, 2020, the Registration Statement of Atlas Corp. filed with the SEC on January 18, 2019 on Form
F-3 (Registration No. 333-229312), as amended on February 28, 2020, the Registration Statement of Atlas Corp. filed with the SEC on March 27, 2019 on Form F-3 (Registration No. 333-230524), as amended on February 28, 2020, the Registration Statement of Atlas Corp. filed with the SEC on May 11, 2020 on Form F-3 (Registration No. 333-238178), as supplemented on December 7, 2020, the Registration Statement of Atlas Corp. filed with the SEC on June 30, 2020 on Form S-8 (Registration No. 333-239578), the Registration Statement of Atlas Corp. filed with SEC on March 19, 2021 on Form F-3 (Registration
No. 333-254536), the Registration Statement of Atlas Corp. filed with the SEC on July 16, 2021 on Form F-3 (Registration No.
333-257967), and the Registration Statement of Atlas Corp. filed with the SEC on March 25, 2022 on Form S-8 (Registration No.
333-263872).
Information Contained in this Form 6-K Report
As previously disclosed on a Report on Form 6-K furnished with the Securities and Exchange Commission on November 1,
2022, Atlas Corp. (the “Company”) entered into an Agreement and Plan of Merger, dated October 31, 2022 (the “Merger Agreement”), with Poseidon Acquisition Corp. (“Poseidon”), and Poseidon Merger Sub, Inc., a
wholly-owned subsidiary of Poseidon (“Merger Sub”), pursuant to which, among other things, and subject to the satisfaction or waiver of the conditions set forth therein, Merger Sub will merge with and into the Company, with the Company
continuing as the surviving corporation and a wholly-owned subsidiary of Poseidon (other than with respect to the Company’s preferred shares) (the “Merger”).
The completion of the Merger is conditioned upon, among other things, expiration or termination of any applicable waiting period under the Hart-Scott-Rodino
Antitrust Improvements Act of 1976, as amended (the “HSR Act”) relating to the consummation of the Merger. The applicable waiting period under the HSR Act expired at 11:59 p.m., Eastern time, on December 19, 2022. The Merger remains
subject to other closing conditions described in the Merger Agreement.
Cautionary Statement Regarding Forward-Looking Statements
This report contains “forward-looking statements.” All statements, other than statements of historical facts, that address activities, events or
developments that the Company expects, projects, believes or anticipates will or may occur in the future are forward-looking statements. You are cautioned not to rely on these forward-looking statements, which speak only as the date of this report.
The Company undertakes no obligation and does not intend to update these forward-looking statements to reflect events or circumstances occurring after this report. These statements are based on current expectations of future events, are not
guarantees of future performance and are subject to risks, uncertainties and other factors, some of which are beyond the Company’s control and are difficult to predict. These risks and uncertainties include the risks that the Merger may not be
consummated or the benefits contemplated therefrom may not be realized. If underlying assumptions prove inaccurate or unknown risks or uncertainties materialize, actual results could vary materially from our expectations and projections. When
considering these forward-looking statements, you should keep in mind the risk factors and other cautionary statements found in our filings with the SEC, which include, but are not limited to, those found in the Company’s Annual Report on Form 20-F for the year ended December 31, 2021, filed with the SEC on March 24, 2022, and its other filings with the SEC.