ATO's three largest insider shareholders as of April 11, 2026 are Kim R Cocklin (Director, 223.29K shares), Kim R Cocklin (Executive Chairman, 173.71K shares), John K Akers (President Ceo, 125.36K shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Kim R Cocklin | - | 0 | 223,292 | 09 Dec, 2021 |
| Kim R Cocklin | Executive Chairman | 173,714 | 0 | 10 Mar, 2026 |
| John K Akers | President Ceo | 125,364 | 0 | 05 Nov, 2025 |
| Richard K Gordon | - | 81,980 | 0 | 06 Feb, 2025 |
| Christopher T Forsythe | Sr Vice President Cfo | 59,615 | 0 | 05 Nov, 2025 |
| Stephen R Springer | - | 53,201 | 0 | 03 Dec, 2021 |
| Richard A Sampson | - | 41,767 | 0 | 05 Feb, 2026 |
| John S Mcdill | Sr Vp, Utility Operations | 34,594 | 0 | 05 Nov, 2025 |
| Karen E Hartsfield | Senior Advisor | 31,213 | 0 | 05 Nov, 2025 |
| J Matt Robbins | Sr Vp, Human Resources | 25,593 | 0 | 12 Dec, 2025 |
| Richard Ii Ware | - | 19,235 | 0 | 04 Oct, 2021 |
| Robert C Grable | - | 10,092 | 0 | 04 Jan, 2022 |
| Diana J Walters | - | 9,300 | 0 | 06 Feb, 2025 |
| Kelly H Compton | - | 7,959 | 0 | 10 Mar, 2026 |
| Richard M Thomas | Vice President Controller | 3,960 | 0 | 07 Nov, 2024 |
| Edward Geiser | - | 2,602 | 0 | 12 Nov, 2024 |
| Jessica Walker Bateman | Sr Vp, Gen Counsel, Corp Sec'Y | 1,458 | 0 | 05 Jan, 2026 |
| Michelle Faulk | Vice President Controller | 1,091 | 0 | 05 Nov, 2025 |
| John C. Ale | - | 1,082 | 0 | 10 Mar, 2026 |
| Sean Donohue | - | 877 | 0 | 04 Dec, 2025 |
| Rafael G Garza | - | 192 | 0 | 02 Apr, 2026 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 01 Apr, 2026 | Rafael G Garza | Common Stock | A | 60 | $185.09 | 192 | D | A |
| 01 Apr, 2026 | Edward Geiser | Phantom Deferred Compensation | A | 176 | $185.09 | 1,492 | D | A |
| 06 Mar, 2026 | Rafael G Garza | Phantom Stock Units | A | 920 | $184.73 | 22,666 | D | A |
| 06 Mar, 2026 | Nancy K Quinn | Phantom Stock Units | A | 920 | $184.73 | 67,991 | D | A |
| 06 Mar, 2026 | Sean Donohue | Phantom Stock Units | A | 920 | $184.73 | 9,792 | D | A |
| 06 Mar, 2026 | Frank H Yoho | Phantom Stock Units | A | 920 | $184.73 | 9,313 | D | A |
| 06 Mar, 2026 | Edward Geiser | Phantom Stock Units | A | 920 | $184.73 | 3,051 | D | A |
| 06 Mar, 2026 | William James Ware | Phantom Stock Units | A | 920 | $184.73 | 920 | D | A |
| 07 Mar, 2026 | Kim R Cocklin | Common Stock | A | 1,082 | $184.73 | 173,714 | D | M |
| 06 Mar, 2026 | Telisa Toliver | Phantom Stock Units | A | 920 | $184.73 | 3,051 | D | A |
| 06 Mar, 2026 | Mitzi H Coogler | Phantom Stock Units | A | 920 | $184.73 | 920 | D | A |
| 07 Mar, 2026 | Kelly H Compton | Common Stock | A | 1,082 | $184.73 | 7,959 | D | M |
| 07 Mar, 2026 | John C. Ale | Common Stock | A | 1,082 | $184.73 | 1,082 | D | M |
| 06 Mar, 2026 | John C. Ale | Restricted Stock Unit | A | 920 | $184.73 | 2,002 | D | A |
| 06 Mar, 2026 | Kim R Cocklin | Phantom Stock Units | A | 920 | $184.73 | 920 | D | A |
| 06 Mar, 2026 | Kelly H Compton | Restricted Stock Unit | A | 920 | $184.73 | 2,002 | D | A |
| 07 Mar, 2026 | John C. Ale | Restricted Stock Unit | D | 1,082 | $0.00 | 920 | D | M |
| 07 Mar, 2026 | Kim R Cocklin | Restricted Stock Unit | D | 1,082 | $0.00 | 0 | D | M |
| 07 Mar, 2026 | Kelly H Compton | Restricted Stock Unit | D | 1,082 | $0.00 | 920 | D | M |
| 04 Feb, 2026 | Richard A Sampson | Common Stock | A | 30,808 | $171.62 | 41,082 | D | C |