Warner L. Baxter
Executive Chairman at Ameren Corporation
Sits on 4 boards. Last updated September 28, 2026
Time on boards
- Boards served
- 4
- Current seats
- 4
- Board service
- 12 years
- Director since
- 2023
12 years of board service in total across 4 boards, counting each seat separately. Longest: Ameren Corporation, 3 years.
Shareholder support
Support is votes for as a share of votes for and against (or withheld). Below 80% is a clear protest.
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Quanta Services Inc. May 21, 202698.7%
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WEC Energy Group Inc. May 7, 202697.9%
-
U.S. Bancorp April 21, 202698.2%
-
Quanta Services Inc. May 22, 202599.1%
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WEC Energy Group Inc. May 8, 202599.5%
-
Quanta Services Inc. May 24, 202498.4%
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U.S. Bancorp April 16, 202498.8%
-
U.S. Bancorp April 18, 202397.9%
Insider trades
All notable trades →From SEC Forms 4 and 5. Open-market purchases and sales are highlighted; grants, option exercises and shares withheld for tax are routine.
| Date | Company | Transaction | Shares | Price | Value |
|---|---|---|---|---|---|
| Jun 1, 2026 | Quanta Services Inc. | Option exercise | +559 | — | — |
| Jan 2, 2026 | WEC Energy Group Inc. | Grant or award | +1,603 | — | — |
| Jun 1, 2025 | Quanta Services Inc. | Option exercise | +622 | — | — |
| Jan 2, 2025 | WEC Energy Group Inc. | Grant or award | +1,693 | — | — |
| Mar 2, 2023 | Ameren Corporation | Open-market sale | −16,793 | $81.25 | $1,364,431 |
| Mar 2, 2023 | Ameren Corporation | Open-market sale | −16,949 | $81.92 | $1,388,462 |
| Mar 2, 2023 | Ameren Corporation | Open-market sale | −16,077 | $82.35 | $1,323,941 |
| Feb 28, 2023 | Ameren Corporation | Shares withheld for tax | −52,832 | $82.71 | $4,369,735 |
| Feb 9, 2023 | Ameren Corporation | Grant or award | +96,823 | — | — |
Questions about Warner L. Baxter
What boards is Warner L. Baxter on?
Warner L. Baxter sits on the boards of Ameren Corporation, Quanta Services Inc., U.S. Bancorp and WEC Energy Group Inc.
How long has Warner L. Baxter served on boards?
Our records show at least 12 years of board service across 4 boards, the earliest from 2023.
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