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v3.25.3

Insider Trading Arrangements | 3 Months Ended
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Sep. 30, 2025 shares
Trading Arrangements, by Individual |
Non-Rule 10b5-1 Arrangement Adopted | false
Rule 10b5-1 Arrangement Terminated | false
Non-Rule 10b5-1 Arrangement Terminated | false
Theresa A. Shaw [Member] |
Trading Arrangements, by Individual |
Material Terms of Trading Arrangement | On August 13, 2025, Theresa A. Shaw, Senior Vice President, Finance and Chief Accounting Officer of Ameren, adopted a Rule 10b5-1 trading arrangement that provides for the sale of an aggregate of up to 1,300 shares to be sold in four equal quarterly installments between November 2025 and November 2026, subject to certain price limitations set forth in the trading arrangement. Ms. Shaw’s 10b5-1 trading arrangement will terminate on the earlier of: (i) November 13, 2026; (ii) execution of all trades or expiration of all orders relating to such trades under the Rule 10b5-1 trading arrangement; or (iii) such date as the Rule 10b5-1 trading arrangement is otherwise terminated according to its terms.
Name | Theresa A. Shaw
Title | Senior Vice President, Finance and Chief Accounting Officer of Ameren
Rule 10b5-1 Arrangement Adopted | true
Adoption Date | August 13, 2025
Expiration Date | November 13, 2026
Arrangement Duration | 365 days
Aggregate Available | 1,300

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