2021 Financial Guidance

Introduction to Atlas Best in class owner operator of leading platforms within Maritime & Energy Solutions Seaspan ATLAS Global Asset Manager Leading Maritime Platform NYSE: ATCO Market cap of $3.5bn¹ APR Global Energy Platform APR ENERGYⓇ ~14% of Adjusted EBITDA² ~86% of Adjusted EBITDA² ㅁ World's largest containership lessor ☐ Mobile power solution lessor Fleet of 160 vessels³ (~10% market share)4 ☐ ~850MW of mobile gas turbines7 ☐ ~$10.7 billion gross contracted cash flow 3,5,6 ☐ ~526MW of gas & diesel gensets ~$0.3 billion gross contracted cash flow8 =2 1. 2. Based on market closing price of $14.38 as of March 8, 2021, with 246.8mn shares outstanding Based on segmented contribution to Adjusted EBITDA for twelve months ended December 31, 2020 6. 3. As of December 31, 2020; pro-forma for newbuild containership orders for 31 vessels announced on December 7, 2020, February 8 and 12, and March 4 and 8, 2021, and 2 secondhand vessel acquisitions announced March 2, 2021 Alphaliner Monthly Monitor February 2021 45 4. 5. Gross contracted cash flow includes $3.9 billion of lease payments receivable from operating 7. 8. leases, $0.9 billion of minimum lease receivable from finance leases, as well as $5.9 billion lease payments to be received from undelivered vessels Includes cash flows expected from signed charter agreements on undelivered vessels, excluding purchase options, extension options, higher charter rate options and profit-sharing components As of December 31, 2020 Gross contracted cash flow includes $0.3 billion of lease payments receivable from operating leases A 3

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