As of June 06, 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 |
|---|---|---|---|---|
| C Richard Reese | - | 65,541 | 0 | 17 May, 2023 |
| James C Foster | Chairman, President And Ceo | 279,693 | 0 | 04 Mar, 2026 |
| George Massaro | - | 5,575 | 0 | 16 May, 2025 |
| Robert J Bertolini | - | 32,802 | 0 | 15 May, 2024 |
| Craig B. Thompson | - | 2,413 | 0 | 23 May, 2025 |
| Deborah Turner Kochevar | - | 7,894 | 0 | 15 May, 2024 |
| Michael Gunnar Knell | Csvp, Cao, Interim Cfo | 14,602 | 0 | 02 Feb, 2026 |
| Mark J Enyedy | - | 946 | 0 | 04 Jun, 2025 |
| 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 |
| Birgit Girshick | Corporate Executive Vp Coo | 0 | 40,417 | 05 Mar, 2026 |
| Joseph W Laplume | Evp, Corp Strategy Develop | 27,448 | 0 | 04 Mar, 2026 |
| Nancy C Andrews | - | 3,964 | 0 | 23 May, 2025 |
| George Sr. Llado | - | 4,814 | 0 | 22 May, 2025 |
| Steven Barg | - | 1,427 | 0 | 04 Jun, 2025 |
| Flavia Pease | Corporate Executive Vp Cfo | 17,297 | 0 | 02 Jun, 2025 |
| Shannon M Parisotto | Cevp, Disc Safety Assessment | 0 | 26,554 | 01 Mar, 2024 |
| Reshema Kemps-Polanco | - | 2,590 | 0 | 23 May, 2025 |
| Mark Mintz | Evp, Chief Information Officer | 7,492 | 0 | 02 Feb, 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 |
|---|---|---|---|---|---|---|---|---|
| 04 Mar, 2026 | Birgit Girshick | Common Stock | D | 328 | $0.00 | 40,417 | I | G |
| 04 Mar, 2026 | Birgit Girshick | Common Stock | D | 328 | $0.00 | 40,417 | I | G |
| 02 Mar, 2026 | James C Foster | Common Stock | A | 16,796 | $178.61 | 279,693 | D | A |
| 03 Mar, 2026 | Joseph W Laplume | Common Stock | A | 25 | $174.54 | 27,448 | D | P |
| 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 | 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 | Joseph W Laplume | Common Stock | D | 1,749 | $211.68 | 27,423 | D | F |
| 30 Jan, 2026 | Mark Mintz | Common Stock | A | 1,797 | $0.00 | 8,147 | D | A |
| 30 Jan, 2026 | Michael Gunnar Knell | Common Stock | A | 1,668 | $0.00 | 15,128 | 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 | 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 | Mark Mintz | Common Stock | A | 1,797 | $0.00 | 8,147 | D | A |
| 30 Jan, 2026 | Birgit Girshick | Common Stock | A | 9,500 | $0.00 | 29,974 | D | A |
| 30 Jan, 2026 | James C Foster | Common Stock | D | 14,664 | $211.68 | 253,677 | D | F |