Transforming For Our Future

Sustainability Financing Framework and Green Bond Issuances Ameren • On June 2, 2021, Ameren published a Sustainability Financing Framework; one of the first utilities in the nation to do so - Framework supports Ameren's sustainability goals and target of net-zero carbon emissions by 20501, as well as social initiatives Allows Ameren and its subsidiaries to elect to finance projects with environmental or social benefits through green, social and sustainability bonds or green loans Financing proceeds will be allocated to eligible environmental and social projects Environmental, or green, projects include renewable energy, climate change adaptation, energy efficiency, clean transportation, green buildings and green innovation Social projects include socioeconomic advancement and empowerment, employment creation and access to essential services Green First Mortgage Bonds Ameren Missouri Issued on October 9, 2020 Issued on June 22, 2021 Issued on April 1, 2022 Ameren Illinois $ in millions Rate Due $550 2.625% 2051 $525 2.15% 2032 $525 3.90% 2052 Ameren Ameren Sustainability Financing Framework June 2021 Issued on June 29, 2021 $350 2.90% 2051 1 Includes Scope 1 emissions as described in Ameren's 2021 Climate Report, "Committed to Clean, Transformational Changes to Net-Zero". First Quarter 2022 Earnings | May 6, 2022 18

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