Ameren's three largest insider shareholders as of September 09, 2026 are Michael L Moehn (Group President, Utilities, 211.53K shares), Michael L Moehn (Group President, Utilities, 199.69K shares), Mark C Birk (Other, 108.34K shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Michael L Moehn | Group President, Utilities | 199,689 | 0 | 199,689 | 19.8% | 05 Aug, 2026 |
| 2 | Mark C Birk | Other | 108,339 | 0 | 108,339 | 10.8% | 04 Mar, 2025 |
| 3 | Mary P Heger | Other | 74,457 | 0 | 74,457 | 7.4% | 02 Mar, 2022 |
| 4 | Fadi M Diya | Other | 65,799 | 0 | 65,799 | 6.5% | 04 Mar, 2025 |
| 5 | James C Johnson | Director | 60,196 | 0 | 60,196 | 6.0% | 07 Jan, 2025 |
| 6 | Shawn E Schukar | Other | 56,830 | 0 | 56,830 | 5.6% | 03 Mar, 2026 |
| 7 | Mark C Lindgren | Other | 44,983 | 0 | 44,983 | 4.5% | 03 Mar, 2026 |
| 8 | Chonda J Nwamu | Executive Vice President | 43,344 | 0 | 43,344 | 4.3% | 04 Mar, 2025 |
| 9 | Bhavani Amirthalingam | Svp Cdio Of Subsidiary | 39,622 | 0 | 39,622 | 3.9% | 04 Mar, 2024 |
| 10 | Steven H Lipstein | Director | 37,862 | 0 | 37,862 | 3.8% | 07 Jan, 2026 |
| 11 | Leonard P Singh | Other | 32,776 | 0 | 32,776 | 3.3% | 03 Mar, 2026 |
| 12 | Theresa A Shaw | Svp And Cato | 32,340 | 0 | 32,340 | 3.2% | 17 Aug, 2026 |
| 13 | Catherine S Brune | Director | 26,628 | 0 | 26,628 | 2.6% | 06 Mar, 2026 |
| 14 | Ryan J Martin | Svp Finance | 25,595 | 0 | 25,595 | 2.5% | 20 Aug, 2026 |
| 15 | Ajay K Arora | Evp Of Subsidiary | 22,326 | 0 | 22,326 | 2.2% | 03 Jun, 2026 |
| 16 | Richard J Harshman | Director | 22,135 | 0 | 22,135 | 2.2% | 07 Jan, 2026 |
| 17 | Patrick E Smith | Chairman President Of Sub | 20,275 | 0 | 20,275 | 2.0% | 06 Jul, 2026 |
| 18 | Noelle K Eder | Director | 16,609 | 0 | 16,609 | 1.6% | 07 Jan, 2025 |
| 19 | Craig S Ivey | Director | 16,597 | 0 | 16,597 | 1.6% | 07 Jan, 2026 |
| 20 | Eric V Seidler | Svp Of Subsidiary | 14,041 | 0 | 14,041 | 1.4% | 03 Mar, 2026 |
| 21 | Rafael Flores | Director | 13,953 | 0 | 13,953 | 1.4% | 19 Feb, 2026 |
| 22 | David Matthew Feinberg | Evp, Gc Secretary | 8,260 | 0 | 8,260 | 0.8% | 09 Feb, 2026 |
| 23 | Gwendolyn G Mizell | Other | 6,324 | 0 | 6,324 | 0.6% | 03 Mar, 2026 |
| 24 | Aaron P Melda | Chairman President Of Sub | 6,251 | 0 | 6,251 | 0.6% | 06 Jul, 2026 |
| 25 | Stephen C Lee | Vp, Interim Gc Secretary | 5,704 | 0 | 5,704 | 0.6% | 04 Mar, 2025 |
| 26 | Steven O Vondran | Director | 3,597 | 0 | 3,597 | 0.4% | 07 Jan, 2026 |
| 27 | Jamie L Engstrom | Director | 1,686 | 0 | 1,686 | 0.2% | 07 Jan, 2026 |
| 28 | Timothy S. Rausch | Director | 1,251 | 0 | 1,251 | 0.1% | 03 Mar, 2026 |
Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.
| Date | Insider | Position | Transaction | Shares | Price | Value | Shares Held After | Ownership |
|---|---|---|---|---|---|---|---|---|
| 18 Aug, 2026 | Ryan J Martin | Svp Finance | Disposed S | 471 | $109.87 | $51.75K | 26,008 | Direct |
| 20 Aug, 2026 | Ryan J Martin | Svp Finance | Disposed S | 500 | $109.88 | $54.94K | 25,595 | Direct |
| 14 Aug, 2026 | Theresa A Shaw | Svp And Cato | Disposed S | 325 | $108.93 | $35.40K | 32,340 | Direct |
| 03 Aug, 2026 | Michael L Moehn | Group President, Utilities | Disposed S | 6,500 | $108.96 | $708.24K | 199,689 | Direct |
| 01 Jul, 2026 | Aaron P Melda | Chairman President Of Sub | Acquired A | 2,520 | $0.00 | $0 | 6,251 | Direct |
| 01 Jul, 2026 | Patrick E Smith | Chairman President Of Sub | Acquired A | 280 | $0.00 | $0 | 20,275 | Direct |
| 01 Jun, 2026 | Aaron P Melda | Chairman And President | Acquired A | 3,705 | $0.00 | $0 | 3,705 | Direct |
| 01 Jun, 2026 | Ajay K Arora | Evp Of Subsidiary | Acquired A | 6,797 | $0.00 | $0 | 22,326 | Direct |
| 12 May, 2026 | Theresa A Shaw | Svp And Cato | Disposed S | 1,500 | $109.35 | $164.03K | 32,943 | Direct |
| 14 May, 2026 | Theresa A Shaw | Svp And Cato | Disposed S | 325 | $109.08 | $35.45K | 32,618 | Direct |
| 01 May, 2026 | Michael L Moehn | Group President, Utilities | Disposed S | 6,500 | $113.63 | $738.60K | 205,598 | Direct |
| 05 Mar, 2026 | Catherine S Brune | Director | Disposed G | 450 | $0.00 | $0 | 26,628 | Direct |
| 05 Mar, 2026 | Catherine S Brune | Director | Disposed G | 450 | $0.00 | $0 | 26,628 | Direct |
| 05 Mar, 2026 | Catherine S Brune | Director | Disposed G | 450 | $0.00 | $0 | 26,628 | Direct |
| 05 Mar, 2026 | Catherine S Brune | Director | Disposed G | 450 | $0.00 | $0 | 26,628 | Direct |
| 04 Mar, 2026 | Ryan J Martin | Svp Finance | Disposed S | 1,300 | $113.31 | $147.30K | 26,479 | Direct |
| 04 Mar, 2026 | Ryan J Martin | Svp Finance | Disposed S | 1,300 | $113.31 | $147.30K | 26,479 | Direct |
| 04 Mar, 2026 | Ryan J Martin | Svp Finance | Disposed S | 1,300 | $113.31 | $147.30K | 26,479 | Direct |
| 04 Mar, 2026 | Ryan J Martin | Svp Finance | Disposed S | 1,300 | $113.31 | $147.30K | 26,479 | Direct |
| 01 Mar, 2026 | Timothy S. Rausch | Director | Acquired A | 1,251 | $0.00 | $0 | 1,251 | Direct |