Data spanning the past 90 days through January 10, 2026 reveals that Automatic Data Processing's three principal insider shareholders consist of Corporate Vice President Michael A Bonarti (80.41K shares), President & Ceo Maria Black (75.05K shares), Director John P Iii Jones (65.10K shares).
| Holder | Position | Shares | Report Date |
|---|---|---|---|
| Michael A Bonarti | Corporate Vice President | 80,414 | 15 Dec, 2025 |
| Maria Black | President & Ceo | 75,052 | 06 Jan, 2026 |
| John P Iii Jones | 65,101 | 07 Nov, 2024 | |
| Sreenivasa Kutam | Corp Vp | 40,770 | 15 Dec, 2025 |
| Carlos A Rodriguez | 36,541 | 14 Nov, 2025 | |
| Donald Weinstein | Corporate Vp | 32,950 | 13 Jan, 2023 |
| Michael C Eberhard | Corporate Vice President | 32,399 | 06 Sep, 2022 |
| Richard T Clark | 32,278 | 12 Nov, 2021 | |
| Deborah L Dyson | Corp. Vp | 26,663 | 06 Apr, 2022 |
| Peter Bisson | 22,769 | 14 Nov, 2025 | |
| Stuart Sackman | Corp. Vp | 22,645 | 05 Jan, 2022 |
| Sandra S Wijnberg | 20,505 | 14 Nov, 2025 | |
| William J Ready | 19,821 | 07 Nov, 2024 | |
| John Ayala | Corp. Vp | 17,971 | 06 Jan, 2025 |
| Don Mcguire | Corp Vp | 17,684 | 05 Sep, 2025 |
| Joseph Desilva | Executive Vp | 17,458 | 05 Jan, 2026 |
| Thomas J Lynch | 16,987 | 14 Nov, 2025 | |
| Brian L. Michaud | Executive Vp | 16,442 | 05 Jan, 2026 |
| Scott F Powers | 14,572 | 14 Nov, 2025 | |
| Dermot J O'Brien | Corp. Vp | 13,622 | 10 Jun, 2021 |
| Virginia Magliulo | Executive Vp | 13,593 | 03 Sep, 2025 |
| David Kwon | Corp Vp | 11,993 | 08 Jan, 2026 |
| David Foskett | Corp. Vp | 11,805 | 05 Jan, 2026 |
| Francine S Katsoudas | 11,634 | 14 Nov, 2025 | |
| Peter J Hadley | Cfo | 10,921 | 03 Sep, 2025 |
| Christopher D'Ambrosio | Corp. Vp | 10,541 | 11 Sep, 2025 |
| James T Sperduto | Corp Vp | 10,068 | 03 Nov, 2022 |
| Nazzic S Keene | 9,717 | 14 Nov, 2025 | |
| Kareem Rogers | Corp. Vp | 7,205 | 06 Sep, 2022 |
| Paul Boland | Corp. Vp | 7,162 | 03 Sep, 2025 |
| Linnie M Haynesworth | 6,891 | 14 Nov, 2025 | |
| David Goeckeler | 6,662 | 14 Nov, 2025 | |
| Laura G Brown | Corp. Vp | 6,016 | 04 Oct, 2022 |
| Augusto J Blanchard | Corp Vp | 4,940 | 06 Sep, 2022 |
| Jonathan S Lehberger | Corp. Vp | 4,488 | 03 Sep, 2025 |
| Kathleen A Winters | Corp. Vp | 4,420 | 16 Apr, 2021 |
| Brock Albinson | Corp. Vp | 4,025 | 05 Mar, 2024 |
| Alexander Quevedo | Corp Vp | 3,860 | 06 Sep, 2022 |
| Karen S Lynch | 1,535 | 14 Nov, 2025 | |
| Robert Holmes Swan | 1,453 | 14 Nov, 2025 |
* 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 |
|---|---|---|---|---|---|---|---|---|
| 06 Jan, 2026 | David Kwon | Common Stock | A | 1,137 | $138.53 | 12,893 | D | M |
| 06 Jan, 2026 | David Kwon | Common Stock | D | 900 | $260.00 | 11,993 | D | S |
| 05 Jan, 2026 | Maria Black | Common Stock | D | 294 | $258.09 | 75,052 | D | S |
| 05 Jan, 2026 | Maria Black | Common Stock | D | 71 | $254.95 | 75,589 | D | S |
| 05 Jan, 2026 | Maria Black | Common Stock | D | 51 | $253.32 | 75,716 | D | S |
| 05 Jan, 2026 | Maria Black | Common Stock | D | 56 | $255.73 | 75,660 | D | S |
| 05 Jan, 2026 | Maria Black | Common Stock | D | 98 | $258.77 | 75,491 | D | S |
| 05 Jan, 2026 | Maria Black | Common Stock | D | 145 | $257.24 | 75,346 | D | S |
| 02 Jan, 2026 | Maria Black | Common Stock | D | 435 | $257.23 | 75,767 | D | F |
| 02 Jan, 2026 | Joseph Desilva | Common Stock | D | 78 | $0.00 | 17,458 | D | G |
| 01 Jan, 2026 | Maria Black | Common Stock | A | 41 | $244.37 | 76,202 | D | I |
| 01 Jan, 2026 | Brian L. Michaud | Common Stock | A | 41 | $244.37 | 16,442 | D | I |
| 01 Jan, 2026 | David Foskett | Common Stock | A | 25 | $244.37 | 11,805 | D | I |
| 12 Dec, 2025 | Michael A Bonarti | Common Stock | D | 117 | $266.10 | 80,414 | D | F |
| 12 Dec, 2025 | Michael A Bonarti | - | - | 80,414 | D | |||
| 12 Dec, 2025 | Sreenivasa Kutam | Common Stock | D | 163 | $266.10 | 40,770 | D | F |
| 12 Dec, 2025 | Brian L. Michaud | Common Stock | D | 37 | $266.10 | 16,401 | D | F |
| 12 Dec, 2025 | David Kwon | Common Stock | D | 51 | $266.10 | 11,756 | D | F |
| 12 Nov, 2025 | Sandra S Wijnberg | Common Stock | A | 1,551 | $0.00 | 20,505 | D | A |
| 12 Nov, 2025 | Thomas J Lynch | Common Stock | A | 2,239 | $0.00 | 16,987 | D | A |