Investor Presentaiton

• Financing Equity - - ~80% of FY24 equity locked in . $112.5M settlement of forward sales¹ $175M Equity Units conversion² Minimal equity needs beyond FY24 ⚫ Debt . - FY24 Spire Inc. debt . $150M refinancing • - $175M remarketing FY25 and FY26 reflects no planned issuances net of maturities FFO / Debt target of 15-16% Equity forecast (Millions) $50-100 $287.5 $0-50 $0-50 FY24 FY25 FY26 ■Common and hybrid equity locked in ATM Debt forecast (Millions) $50-100 $175 $335 $305 $150 FY24 11.74M shares to be settled by Dec. 28, 2023; average share price of $63.60. 2Conversion of 2021 Equity Units, ~2.7M shares, in March 2024 at a price no less than $64.24. 12 Spire | Investor presentation - December 2023 Debt maturities Remarket senior notes FY25 FY26 Expected new LT debt

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