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CRL Charles River Laboratories International, Inc.
Insider figures are trailing 90 days, open-market Form 4 only. Institutional figures are the latest reported quarter. These windows are not simultaneous.
-$42.6M net selling - trailing 90 days
0 buyers - 6 unique sellers
Historical context: most recent complete month (2026-08) is the 2nd percentile of this ticker's monthly net P/S flow over 23 complete months (limited history). Lower percentiles are more selling; higher are more buying.
Institutional activity: not available - insufficient comparable institutions for the latest complete quarter.
open-market Form 4 only - grants, exercises, tax withholding excluded. ~ derived from SEC-reported shares x price.
Institutional activity: not available - insufficient comparable institutions for the latest complete quarter.
Who is responsible
| Insider | Role | Net activity | Rows |
|---|---|---|---|
| FOSTER JAMES C | — | -~$34.8M | 3 |
| Parisotto Shannon M | CEVP, Disc & Safety Assessment | -~$3.0M | 3 |
| Girshick Birgit | Chief Executive Officer | -~$1.8M | 1 |
| Knell Michael Gunnar | SVP, Finance and CAO | -~$1.7M | 9 |
| Creamer Victoria L | EVP & Chief People Officer | -~$1.1M | 1 |
| Andrews Nancy C | — | -~$0.2M | 1 |
Transactions
| Date | Insider | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 8/25/2026 | FOSTER JAMES C | — | S | -33561 | 300 | ~$10.1M |
| 8/19/2026 | Parisotto Shannon M | CEVP, Disc & Safety Assessment | S | -2039 | 294.12 | ~$0.6M |
| 8/18/2026 | Andrews Nancy C | — | S | -573 | 285.24 | ~$0.2M |
| 8/11/2026 | Parisotto Shannon M | CEVP, Disc & Safety Assessment | S | -3714 | 279.66 | ~$1.0M |
| 8/11/2026 | Girshick Birgit | Chief Executive Officer | S | -6500 | 279.9 | ~$1.8M |
| 8/10/2026 | FOSTER JAMES C | — | S | -28733 | 275 | ~$7.9M |
| 8/6/2026 | Knell Michael Gunnar | SVP, Finance and CAO | 9 reported sale rows | 6645 | — | ~$1.7M |
| 8/6/2026 | Knell Michael Gunnar | SVP, Finance and CAO | S | -1274 | 259.07 | ~$0.3M |
| 8/6/2026 | Knell Michael Gunnar | SVP, Finance and CAO | S | -901 | 260.63 | ~$0.2M |
| 8/6/2026 | Knell Michael Gunnar | SVP, Finance and CAO | S | -810 | 261.45 | ~$0.2M |
| 8/6/2026 | Knell Michael Gunnar | SVP, Finance and CAO | S | -213 | 262.37 | ~$56K |
| 8/6/2026 | Knell Michael Gunnar | SVP, Finance and CAO | S | -620 | 263.94 | ~$0.2M |
| 8/6/2026 | Knell Michael Gunnar | SVP, Finance and CAO | S | -482 | 265.17 | ~$0.1M |
| 8/6/2026 | Knell Michael Gunnar | SVP, Finance and CAO | S | -404 | 258.53 | ~$0.1M |
| 8/6/2026 | Knell Michael Gunnar | SVP, Finance and CAO | S | -1205 | 258.53 | ~$0.3M |
| 8/6/2026 | Knell Michael Gunnar | SVP, Finance and CAO | S | -736 | 258.53 | ~$0.2M |
| 8/6/2026 | Creamer Victoria L | EVP & Chief People Officer | S | -4179 | 259.16 | ~$1.1M |
| 8/5/2026 | Parisotto Shannon M | CEVP, Disc & Safety Assessment | S | -5046 | 263 | ~$1.3M |
| 6/29/2026 | FOSTER JAMES C | — | S | -75000 | 225 | ~$16.9M |
| 3/3/2026 | LaPlume Joseph W | EVP, Corp Strategy & Develop | P | 25 | 174.54 | ~$4K |
| 8/22/2025 | LaPlume Joseph W | EVP, Corp Strategy & Develop | S | -400 | 163.72 | ~$65K |
| 8/18/2025 | LaPlume Joseph W | EVP, Corp Strategy & Develop | S | -800 | 157.6 | ~$0.1M |
| 8/7/2025 | LaPlume Joseph W | EVP, Corp Strategy & Develop | S | -400 | 150.04 | ~$60K |
| 5/15/2025 | MASSARO GEORGE | — | 3 reported sale rows | 140 | — | ~$19K |
| 5/15/2025 | MASSARO GEORGE | — | S | -24 | 139.05 | ~$3K |
| 5/15/2025 | MASSARO GEORGE | — | S | -35 | 136.32 | ~$5K |
| 5/15/2025 | MASSARO GEORGE | — | S | -81 | 137.68 | ~$11K |
| 5/14/2025 | MASSARO GEORGE | — | 4 reported sale rows | 133 | — | ~$19K |
| 5/14/2025 | MASSARO GEORGE | — | S | -21 | 140.78 | ~$3K |
| 5/14/2025 | MASSARO GEORGE | — | S | -14 | 141.85 | ~$2K |
| 5/14/2025 | MASSARO GEORGE | — | S | -7 | 143.77 | ~$1K |
| 5/14/2025 | MASSARO GEORGE | — | S | -91 | 139.95 | ~$13K |
| 5/13/2025 | LaPlume Joseph W | EVP, Corp Strategy & Develop | S | -500 | 145.41 | ~$73K |
| 2/20/2025 | LaPlume Joseph W | EVP, Corp Strategy & Develop | S | -4400 | 162.5 | ~$0.7M |
| 2/20/2025 | Girshick Birgit | Corporate Executive VP & COO | P | 1514 | 164.63 | ~$0.2M |
| 2/20/2025 | FOSTER JAMES C | Chairman, President and CEO | P | 6075 | 165.01 | ~$1.0M |
| 11/7/2024 | WALLMAN RICHARD F | — | 3 reported sale rows | 7621 | — | ~$1.6M |
| 11/7/2024 | WALLMAN RICHARD F | — | S | -3371 | 215.75 | ~$0.7M |
| 11/7/2024 | WALLMAN RICHARD F | — | S | -3250 | 216.5 | ~$0.7M |
| 11/7/2024 | WALLMAN RICHARD F | — | S | -1000 | 216.5 | ~$0.2M |