As of September 12, 2026, the three largest insider holders of ACA are Reid S Essl (Group President, 93.26K shares), Gail M Peck (Chief Financial Officer, 85.69K shares), Mary E Henderson (Svp, Corporate Administration, 41.30K shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Reid S Essl | Group President | 93,264 | 0 | 93,264 | 21.4% | 25 Aug, 2026 |
| 2 | Gail M Peck | Chief Financial Officer | 85,692 | 0 | 85,692 | 19.7% | 18 May, 2026 |
| 3 | Mary E Henderson | Svp, Corporate Administration | 41,298 | 0 | 41,298 | 9.5% | 06 Mar, 2023 |
| 4 | Douglas L Rock | Director | 32,665 | 0 | 32,665 | 7.5% | 05 May, 2022 |
| 5 | Kerry S Cole | Group President | 27,487 | 0 | 27,487 | 6.3% | 18 May, 2026 |
| 6 | Ronald J Gafford | Director | 24,995 | 0 | 24,995 | 5.7% | 11 May, 2023 |
| 7 | Joseph Alvarado | Director | 19,931 | 0 | 19,931 | 4.6% | 14 May, 2026 |
| 8 | John W Lindsay | Director | 19,931 | 0 | 19,931 | 4.6% | 14 May, 2026 |
| 9 | Jeffrey A Craig | Director | 19,931 | 0 | 19,931 | 4.6% | 14 May, 2026 |
| 10 | Melanie Montague Trent | Director | 17,931 | 0 | 17,931 | 4.1% | 27 Aug, 2026 |
| 11 | Jesse E. Jr. Collins | Group President | 17,333 | 0 | 17,333 | 4.0% | 06 Apr, 2026 |
| 12 | Steven J. Demetriou | Director | 12,611 | 0 | 12,611 | 2.9% | 14 May, 2026 |
| 13 | Kimberly S Lubel | Director | 9,627 | 0 | 9,627 | 2.2% | 14 May, 2026 |
| 14 | Julie A Piggott | Director | 9,413 | 0 | 9,413 | 2.2% | 14 May, 2026 |
| 15 | Eric D Hurst | Vp Controller (Pao) | 3,119 | 0 | 3,119 | 0.7% | 25 Aug, 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 |
|---|---|---|---|---|---|---|---|---|
| 26 Aug, 2026 | Antonio Carrillo | President Ceo | Disposed G | 26,666 | $0.00 | $0 | 498,935 | Direct |
| 26 Aug, 2026 | Melanie Montague Trent | Director | Disposed G | 2,000 | $0.00 | $0 | 17,931 | Direct |
| 25 Aug, 2026 | Reid S Essl | Group President | Disposed G | 5,950 | $0.00 | $0 | 93,264 | Direct |
| 25 Aug, 2026 | Eric D Hurst | Vp Controller (Pao) | Disposed G | 2,382 | $0.00 | $0 | 3,119 | Direct |
| 30 Jun, 2026 | John W Lindsay | Director | Acquired A | 3 | $145.29 | $436 | 7,402 | Direct |
| 30 Jun, 2026 | Antonio Carrillo | President Ceo | Acquired A | 1 | $145.29 | $145 | 4,885 | Direct |
| 15 May, 2026 | Kerry S Cole | Group President | Disposed F | 262 | $124.14 | $32.52K | 27,487 | Direct |
| 15 May, 2026 | Eric D Hurst | Vp Controller (Pao) | Disposed F | 17 | $124.14 | $2.11K | 5,501 | Direct |
| 15 May, 2026 | Reid S Essl | Group President | Disposed F | 2,206 | $124.14 | $273.85K | 99,214 | Direct |
| 15 May, 2026 | Gail M Peck | Chief Financial Officer | Disposed F | 2,600 | $124.14 | $322.76K | 85,692 | Direct |
| 13 May, 2026 | Melanie Montague Trent | Director | Acquired A | 1,087 | $0.00 | $0 | 19,931 | Direct |
| 13 May, 2026 | Julie A Piggott | Director | Acquired A | 1,087 | $0.00 | $0 | 9,413 | Direct |
| 13 May, 2026 | Melanie Montague Trent | Director | Acquired A | 1,087 | $0.00 | $0 | 19,931 | Direct |
| 13 May, 2026 | Julie A Piggott | Director | Acquired A | 1,087 | $0.00 | $0 | 9,413 | Direct |
| 13 May, 2026 | Kimberly S Lubel | Director | Acquired A | 1,087 | $0.00 | $0 | 9,627 | Direct |
| 13 May, 2026 | John W Lindsay | Director | Acquired A | 1,087 | $0.00 | $0 | 19,931 | Direct |
| 13 May, 2026 | Steven J. Demetriou | Director | Acquired A | 1,087 | $0.00 | $0 | 12,611 | Direct |
| 13 May, 2026 | Joseph Alvarado | Director | Acquired A | 1,087 | $0.00 | $0 | 19,931 | Direct |
| 13 May, 2026 | Jeffrey A Craig | Director | Acquired A | 1,087 | $0.00 | $0 | 19,931 | Direct |
| 03 Apr, 2026 | Jesse E. Jr. Collins | Group President | Disposed F | 50 | $107.70 | $5.39K | 17,333 | Direct |