Ameren said on February 6, 2026 the Board of Directors elected Timothy S. Rausch to the Board, with a term beginning on March 1, 2026 and expiring at Ameren's Annual Meeting of Shareholders in 2026.

1. 01

   Ameren said on February 6, 2026 the Board of Directors elected Timothy S. Rausch to the Board, with a term beginning on March 1, 2026 and expiring at Ameren's Annual Meeting of Shareholders in 2026.

2. 02

   The company appointed Rausch to the Finance Committee and the Nuclear, Operations and Environmental Sustainability Committee effective March 1, said no arrangement or understanding exists between Rausch and Ameren or any other person pursuant to which Rausch was selected as a director, and said he will participate in the Company's standard non-employee director compensation program.

3. 03

   Ameren said Rausch served as Executive Vice President and Chief Nuclear Officer of Tennessee Valley Authority from October 2018 to July 2025 and previously served as Chief Nuclear Officer of both Talen Energy Corporation and PPL Corporation.

4. 04

   The company said Rausch had no business relationships with Ameren or its subsidiaries in 2025 or to the date hereof in 2026 which are required to be reported under Item 404(a), and Chief Executive Officer Martin J. Lyons said nuclear generation will continue to be an important element of Ameren's diverse generation resource strategy.

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