| $350M | ||
| $217M | ||
| $172M | ||
| $109M | ||
| $107M | ||
| $104M |
Buys | $7,338 | 2 | 13 |
Sells | $52,066,240 | 13 | 87 |
| LaPlume Joseph W | EVP, Corp Strategy & Develop | 1 | $4,364 | 0 | $0 | $4,364 |
| Coleman Glenn | EVP & Chief Financial Officer | 1 | $2,974 | 0 | $0 | $2,974 |
| Andrews Nancy C | director | 0 | $0 | 1 | $163,443 | $-163,443 |
| Creamer Victoria L | EVP & Chief People Officer | 0 | $0 | 1 | $1.08M | $-1.08M |
| Knell Michael Gunnar | SVP, Finance and CAO | 0 | $0 | 1 | $1.73M | $-1.73M |
| Girshick Birgit | Chief Executive Officer | 0 | $0 | 1 | $1.82M | $-1.82M |
| Parisotto Shannon M | CEVP, Disc & Safety Assessment | 0 | $0 | 5 | $4.01M | $-4.01M |
| FOSTER JAMES C | director | 0 | $0 | 4 | $43.26M | $-43.26M |
Charles River Laboratories International, Inc. operates as a contract research organization (CRO), providing essential preclinical services to the pharmaceutical and biotechnology industries. Its core business revolves around assisting clients with drug discovery, non-clinical development, and thorough safety testing, with its services extending globally across the United States, Europe, Canada, and the Asia Pacific region. The company organizes its diverse offerings into three principal segments: Research Models and Services (RMS), Discovery …
Over the last 12 months, insiders at Charles River Laboratories International, Inc. have bought $7,338 and sold $52.07M worth of Charles River Laboratories International, Inc. stock.
On average, over the past 5 years, insiders at Charles River Laboratories International, Inc. have bought $855,344 and sold $20.63M worth of stock each year.
Highest buying activity among insiders over the last 12 months: LaPlume Joseph W (EVP, Corp Strategy & Develop) — $4,364. Coleman Glenn (EVP & Chief Financial Officer) — $2,974.
The last purchase of 10 shares for transaction amount of $2,974 was made by Coleman Glenn (EVP & Chief Financial Officer) on 2026‑09‑30.
| 2026-10-22 | Sale | FOSTER JAMES C | director | 24,042 0.0511% | $350.00 | $8.41M | +5.42% | |
| 2026-10-21 | Sale | Parisotto Shannon M | CEVP, Disc & Safety Assessment | 2,156 0.0045% | $344.41 | $742,548 | +3.60% | |
| 2026-10-05 | Sale | Parisotto Shannon M | CEVP, Disc & Safety Assessment | 981 0.002% | $308.44 | $302,580 | +1.51% | |
| 2026-09-30 | Coleman Glenn | EVP & Chief Financial Officer | 10 <0.0001% | $297.43 | $2,974 | +4.57% | ||
| 2026-08-25 | Sale | FOSTER JAMES C | director | 33,561 0.0702% | $300.00 | $10.07M | -0.85% | |
| 2026-08-19 | Sale | Parisotto Shannon M | CEVP, Disc & Safety Assessment | 2,039 0.0043% | $294.12 | $599,711 | +1.79% | |
| 2026-08-18 | Sale | Andrews Nancy C | director | 573 0.0012% | $285.24 | $163,443 | +5.71% | |
| 2026-08-11 | Sale | Girshick Birgit | Chief Executive Officer | 6,500 0.0134% | $279.90 | $1.82M | +4.46% | |
| 2026-08-11 | Sale | Parisotto Shannon M | CEVP, Disc & Safety Assessment | 3,714 0.0076% | $279.66 | $1.04M | +4.46% | |
| 2026-08-10 | Sale | FOSTER JAMES C | director | 28,733 0.0588% | $275.00 | $7.9M | +6.32% | |
| 2026-08-06 | Sale | Creamer Victoria L | EVP & Chief People Officer | 4,179 0.0084% | $259.16 | $1.08M | +10.69% | |
| 2026-08-06 | Sale | Knell Michael Gunnar | SVP, Finance and CAO | 6,645 0.0134% | $260.38 | $1.73M | +10.69% | |
| 2026-08-05 | Sale | Parisotto Shannon M | CEVP, Disc & Safety Assessment | 5,046 0.0106% | $263.00 | $1.33M | +12.52% | |
| 2026-06-29 | Sale | FOSTER JAMES C | director | 75,000 0.1553% | $225.00 | $16.88M | +25.17% | |
| 2026-03-03 | LaPlume Joseph W | EVP, Corp Strategy & Develop | 25 <0.0001% | $174.54 | $4,364 | +27.68% | ||
| 2025-08-22 | Sale | LaPlume Joseph W | EVP, Corp Strategy & Develop | 400 0.0008% | $163.72 | $65,488 | +10.88% | |
| 2025-08-18 | Sale | LaPlume Joseph W | EVP, Corp Strategy & Develop | 800 0.0016% | $157.60 | $126,080 | +13.94% | |
| 2025-08-07 | Sale | LaPlume Joseph W | EVP, Corp Strategy & Develop | 400 0.0008% | $150.04 | $60,016 | +18.74% | |
| 2025-05-15 | Sale | MASSARO GEORGE | director | 140 0.0003% | $137.57 | $19,260 | +20.90% | |
| 2025-05-14 | Sale | MASSARO GEORGE | director | 140 0.0003% | $140.74 | $19,703 | +20.85% |
| Girshick Birgit | Chief Executive Officer | 36013 0.0748% | $12.67M | 2 | 14 | +6.76% |
| FOSTER JAMES C | director | 31596 0.0656% | $11.12M | 7 | 88 | +5.98% |
| Coleman Glenn | EVP & Chief Financial Officer | 27762 0.0576% | $9.77M | 1 | 0 | |
| LaPlume Joseph W | EVP, Corp Strategy & Develop | 27448 0.057% | $9.66M | 1 | 25 | |
| GILLETT NANCY | Corporate Executive VP | 11034 0.0229% | $3.88M | 1 | 41 | +0.49% |
| Ho John C | Senior Vice President | 8950 0.0186% | $3.15M | 1 | 0 | +15.04% |
| WALLMAN RICHARD F | director | 0 0% | $0 | 4 | 13 | +7.48% |
| Increased Positions | 295 | +43.9% | 10M | +19.93% |
| Decreased Positions | 295 | -43.9% | 8M | -15.75% |
| New Positions | 113 | New | 2M | New |
| Sold Out Positions | 85 | Sold Out | 1M | Sold Out |
| Total Postitions | 672 | 0% | 53M | +4.18% |
| Vanguard Group Inc | $1.18M | 11.92% | 5.84M | +27,989 | +0.48% | 2025-09-30 |
| Blackrock, Inc. | $780,545.00 | 7.87% | 3.86M | +199,934 | +5.47% | 2025-09-30 |
| Wellington Management Group Llp | $645,814.00 | 6.51% | 3.19M | -577,338 | -15.32% | 2025-09-30 |
| Allspring Global Investments Holdings, Llc | $440,859.00 | 4.45% | 2.18M | -113,185 | -4.94% | 2025-09-30 |
| State Street Corp | $370,662.00 | 3.74% | 1.83M | -27,634 | -1.49% | 2025-09-30 |
| Ariel Investments, Llc | $301,626.00 | 3.04% | 1.49M | +74,750 | +5.28% | 2025-09-30 |
| Harris Associates L P | $298,182.00 | 3.01% | 1.47M | +310,149 | +26.67% | 2025-09-30 |
| Geode Capital Management, Llc | $256,415.00 | 2.59% | 1.27M | +34,516 | +2.8% | 2025-09-30 |
| Invesco Ltd. | $252,859.00 | 2.55% | 1.25M | +12,035 | +0.97% | 2025-09-30 |
| Bank Of America Corp /De/ | $235,485.00 | 2.37% | 1.16M | +137,335 | +13.38% | 2025-09-30 |