As of March 23, 2026, Charles River Laboratories International's top three insider holders are James C Foster (Chairman, President And Ceo, 279.69K shares), C Richard Reese (Director, 65.54K shares), Birgit Girshick (Corporate Executive Vp Coo, 40.42K shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| James C Foster | Chairman, President And Ceo | 279,693 | 0 | 04 Mar, 2026 |
| C Richard Reese | 65,541 | 0 | 17 May, 2023 | |
| Birgit Girshick | Corporate Executive Vp Coo | 0 | 40,417 | 05 Mar, 2026 |
| Robert J Bertolini | 32,802 | 0 | 15 May, 2024 | |
| George M Jr Milne | 29,079 | 0 | 10 May, 2021 | |
| Joseph W Laplume | Evp, Corp Strategy Develop | 27,448 | 0 | 04 Mar, 2026 |
| Birgit Girshick | Corporate Executive Vp Coo | 26,913 | 0 | 02 Feb, 2026 |
| Shannon M Parisotto | Cevp, Disc Safety Assessment | 0 | 26,554 | 01 Mar, 2024 |
| Victoria L Creamer | Evp Chief People Officer | 26,072 | 0 | 02 Feb, 2026 |
| David Ross Smith | Corporate Executive Vp Cfo | 25,819 | 0 | 04 Mar, 2022 |
| William D Barbo | Corporate Executive Vp Cco | 0 | 23,337 | 08 Nov, 2024 |
| Flavia Pease | Corporate Executive Vp Cfo | 17,297 | 0 | 02 Jun, 2025 |
| Shannon M Parisotto | Cevp, Disc Safety Assessment | 15,184 | 0 | 30 Jan, 2026 |
| Michael Gunnar Knell | Csvp, Cao, Interim Cfo | 14,602 | 0 | 02 Feb, 2026 |
| Martin Mackay | 14,292 | 0 | 23 May, 2025 | |
| Richard F Wallman | 12,386 | 0 | 08 Nov, 2024 | |
| Deborah Turner Kochevar | 7,894 | 0 | 15 May, 2024 | |
| Mark Mintz | Evp, Chief Information Officer | 7,492 | 0 | 02 Feb, 2026 |
| James C Foster | Chairman, President And Ceo | 0 | 6,017 | 17 May, 2023 |
| George Massaro | 5,575 | 0 | 16 May, 2025 | |
| Virginia M Wilson | 4,911 | 0 | 23 May, 2025 | |
| George Sr. Llado | 4,814 | 0 | 22 May, 2025 | |
| Nancy C Andrews | 3,964 | 0 | 23 May, 2025 | |
| William D Barbo | Corporate Executive Vp Cco | 3,433 | 0 | 30 May, 2024 |
| Reshema Kemps-Polanco | 2,590 | 0 | 23 May, 2025 | |
| Craig B. Thompson | 2,413 | 0 | 23 May, 2025 | |
| Steven Barg | 1,427 | 0 | 04 Jun, 2025 | |
| Abraham Ceesay | 946 | 0 | 03 Jun, 2025 | |
| Paul W Graves | 946 | 0 | 04 Jun, 2025 | |
| Mark J Enyedy | 946 | 0 | 04 Jun, 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 |
|---|---|---|---|---|---|---|---|---|
| 04 Mar, 2026 | Birgit Girshick | Common Stock | D | 328 | $0.00 | 40,417 | I | G |
| 03 Mar, 2026 | Joseph W Laplume | Common Stock | A | 25 | $174.54 | 27,448 | D | P |
| 02 Mar, 2026 | James C Foster | Common Stock | A | 16,796 | $178.61 | 279,693 | D | A |
| 30 Jan, 2026 | Joseph W Laplume | Common Stock | A | 5,456 | $0.00 | 29,172 | D | A |
| 30 Jan, 2026 | Joseph W Laplume | Common Stock | D | 1,749 | $211.68 | 27,423 | D | F |
| 30 Jan, 2026 | Birgit Girshick | Common Stock | A | 9,500 | $0.00 | 29,974 | D | A |
| 30 Jan, 2026 | James C Foster | Common Stock | A | 39,031 | $0.00 | 268,341 | D | A |
| 30 Jan, 2026 | Michael Gunnar Knell | Common Stock | A | 1,668 | $0.00 | 15,128 | D | A |
| 30 Jan, 2026 | Victoria L Creamer | Common Stock | A | 5,006 | $0.00 | 27,368 | D | A |
| 30 Jan, 2026 | Mark Mintz | Common Stock | A | 1,797 | $0.00 | 8,147 | D | A |
| 30 Jan, 2026 | Victoria L Creamer | Common Stock | D | 1,296 | $211.68 | 26,072 | D | F |
| 30 Jan, 2026 | James C Foster | Common Stock | D | 14,664 | $211.68 | 253,677 | D | F |
| 30 Jan, 2026 | Michael Gunnar Knell | Common Stock | D | 526 | $211.68 | 14,602 | D | F |
| 30 Jan, 2026 | Mark Mintz | Common Stock | D | 655 | $211.68 | 7,492 | D | F |
| 30 Jan, 2026 | Birgit Girshick | Common Stock | D | 3,061 | $211.68 | 26,913 | D | F |
| 30 Jan, 2026 | Shannon M Parisotto | Common Stock | A | 4,236 | $0.00 | 16,251 | D | A |
| 30 Jan, 2026 | Shannon M Parisotto | Common Stock | D | 1,067 | $211.68 | 15,184 | D | F |
| 06 Nov, 2025 | Michael Gunnar Knell | Common Stock | A | 2,926 | $170.88 | 13,460 | D | A |
| 18 Aug, 2025 | Joseph W Laplume | Common Stock | D | 800 | $157.60 | 24,116 | D | S |
| 07 Aug, 2025 | Joseph W Laplume | Common Stock | D | 400 | $150.04 | 24,916 | D | S |