Second Quarter/YTD 2023 Results

Successfully Completed 2023 Financing Plan AMERICAN WATER Closing Date ~$1.7 Billion Common Stock Issuance Public Offering Price Use of Proceeds March 3, 2023 12,650,000 Shares $135.50/Share Repaid outstanding commercial paper obligations and for general corporate purposes ~$1.0 Billion Exchangeable Senior Notes due 2026 Executed on our plan to issue a significant portion of expected $2B of equity need in. Five-Year Plan (2023-2027) Successfully completed our long-term debt financing for the year with issuance of Exchangeable Senior Notes Both issuances demonstrate proactive execution in a challenging market environment to fund growth and manage financing costs for the benefit of customer affordability and shareholder value Size Interest Rate Conversion Premium Settlement Use of Proceeds 3.625% per year ~22.5% Cash, up to the aggregate principal amount (remaining value, if any, settled in cash, shares, or combination of cash/shares, at AWCC's election) Repaid outstanding commercial paper obligations and for general corporate purposes 25

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