Notes:   March 28, 2023 -- Seaspan Corporation ("Seaspan"), a wholly owned subsidiary of Atlas Corp. ("Atlas" or the "Company") (NYSE: ATCO), today announced that the Company and Poseidon Acquisition Corp. ("Poseidon") an entity formed by certain affiliates of Fairfax Financial Holdings Limited ("Fairfax"), certain affiliates of the Washington Family ("Washington"), David Sokol, Chairman of the Board of Atlas, and Ocean Network Express Pte. Ltd., and certain of their respective affiliates, completed the previously announced transaction pursuant to which Poseidon acquired all outstanding common shares of Atlas not already owned by Fairfax, Washington and Mr. Sokol. Pursuant to the terms of the Agreement and Plan of Merger, dated October 31, 2022, by and among the Company, Poseidon and Poseidon Merger Sub, Inc. ("Merger Sub"), Merger Sub merged with and into the Company (the "Merger"), with the Company continuing as the surviving company in the Merger. January 29. 2020 -- On November 20, 2019, Seaspan Corporation (“Seaspan”) entered into an Agreement and Plan of Merger, as amended (the “Merger Agreement”), with Atlas Corp., a wholly owned subsidiary of Seaspan (“Atlas”), and Seaspan Holdco V Ltd., a wholly owned subsidiary of Atlas (“Merger Sub”), pursuant to which Seaspan will implement the holding company reorganization. If the holding company reorganization is completed, Merger Sub will merge with and into Seaspan (the “Merger”), and Seaspan will continue its corporate existence as the surviving corporation and will become a direct wholly owned subsidiary of Atlas. As a result, each outstanding (i) Class A common share of Seaspan (“Seaspan common share”), (ii) 7.95% Cumulative Redeemable Perpetual Preferred Share – Series D of Seaspan (“Seaspan Series D Preferred Share”), (iii) 8.25% Cumulative Redeemable Perpetual Preferred Share – Series E of Seaspan (“Seaspan Series E Preferred Share”), (iv) 8.20% Cumulative Redeemable Perpetual Preferred Share – Series G of Seaspan (“Seaspan Series G Preferred Share”), (v) 7.875% Cumulative Redeemable Perpetual Preferred Share – Series H of Seaspan (“Seaspan Series H Preferred Share”), and (vi) Fixed-To-Floating Cumulative Redeemable Perpetual Preferred Share – Series I of Seaspan (“Seaspan Series I Preferred Share” and together with Seaspan Series D Preferred Share, Seaspan Series E Preferred Share, Seaspan Series G Preferred Share, and Seaspan Series H Preferred Share, “Seaspan preferred share”) will be canceled. Atlas will issue, in respect of each canceled Seaspan common share, one common share of Atlas (“Atlas common share”) to the holder of such canceled Seaspan common share. In addition, Atlas will issue, in respect of each canceled (i) Seaspan Series D Preferred Share, one 7.95% Cumulative Redeemable Perpetual Preferred Share – Series D of Atlas (“Atlas Series D Preferred Share”), (ii) Seaspan Series E Preferred Share, one 8.25% Cumulative Redeemable Perpetual Preferred Share – Series E of Atlas (“Atlas Series E Preferred Share”), (iii) Seaspan Series G Preferred Share, one 8.20% Cumulative Redeemable Perpetual Preferred Share – Series G of Atlas (“Atlas Series G Preferred Share”), (iv) Seaspan Series H Preferred Share, one 7.875% Cumulative Redeemable Perpetual Preferred Share – Series H of Atlas (“Atlas Series H Preferred Share”), and (v) Seaspan Series I Preferred Share, one Fixed-To-Floating Cumulative Redeemable Perpetual Preferred Share – Series I of Atlas (“Atlas Series I Preferred Share” and together with Atlas Series D Preferred Share, Atlas Series E Preferred Share, Atlas Series G Preferred Share, and Atlas Series H Preferred Share, “Atlas preferred share”) to the holder of such canceled Seaspan Series D Preferred Share, Seaspan Series E Preferred Share, Seaspan Series G Preferred Share, Seaspan Series H Preferred Share and Seaspan Series I Preferred Share, respectively. Seaspan common shares and Seaspan preferred shares are listed on the New York Stock Exchange (the “NYSE”) under the symbols “SSW,” “SSW-D,” “SSW-E,” “SSW-G,” “SSW-H,” and “SSW-I,” respectively. Seaspan’s 7.125% Senior Notes due 2027, 5.500% Senior Notes due 2025 and the related guarantees , and 5.500% Senior Notes due 2026 and the related guarantees and together with 2027 Notes and 2025 Notes, are also listed on the NYSE under the symbols “SSWA,” “SSW25,” and “SSW26,” respectively. If the holding company reorganization is completed, Seaspan common shares, Seaspan preferred shares and the Notes will no longer be listed on the NYSE and will be deregistered under the Securities Exchange Act of 1934, as amended (the “Exchange Act”). Atlas will apply for the listing of Atlas common shares and Atlas preferred shares to be issued in connection with the holding company reorganization on the NYSE under the symbols “ATCO,” “ATCO-D,” “ATCO-E,” “ATCO-G,” “ATCO-H,” and “ATCO-I,” respectively. Atlas intends to apply to the Irish Stock Exchange plc, trading as Euronext Dublin, for 2025 Notes and 2026 Notes to be admitted to its official list and to trading on the Global Exchange Market.

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CEO - Bing Chen

CFO - Graham Talbot