SEC Form 4 · Updated Daily
CRL
— CHARLES RIVER LABORATORIES INTERNATIONAL, INC. OwnershipInsider and institutional ownership derived from SEC Form 4 filings. Click any owner to see their holdings across every company they’ve filed on, and how their position has changed over time.
Current Reporting Owners
| Owner | Role | Shares Owned | As Of | Last Activity |
|---|---|---|---|---|
| JOHST DAVID P | Officer | 224,478 | 2020-05-29 | A |
| ACKERMAN THOMAS F | Reporting Owner | 115,289 | 2016-02-29 | A |
| RENAUD REAL H | Officer | 74,390 | 2010-08-11 | F |
| REESE C RICHARD | Director | 65,541 | 2023-05-15 | A |
| FOSTER JAMES C | Director | 55,638 | 2026-10-22 | M |
| CHUBB STEPHEN D | Director | 41,187 | 2021-02-23 | M |
| Acford Joanne P | Officer | 37,109 | 2007-08-11 | F |
| Molho Davide | Officer | 35,928 | 2018-07-24 | M |
| Girshick Birgit | Officer | 35,485 | 2026-08-19 | G |
| Smith David Ross | Officer | 34,784 | 2022-03-03 | M |
| Creamer Victoria L | Officer | 34,230 | 2026-08-06 | M |
| Berthoux Christophe | Officer | 32,962 | 2010-02-26 | A |
| BERTOLINI ROBERT J | Director | 32,802 | 2024-05-13 | A |
| LaPlume Joseph W | Officer | 31,041 | 2026-08-10 | G |
| CHANG NANCY T | Director | 31,010 | 2010-05-07 | A |
| MILNE GEORGE M JR | Director | 29,079 | 2021-05-07 | A |
| Coleman Glenn | Officer | 27,762 | 2026-09-30 | P |
| WALTRIP WILLIAM | Director | 25,131 | 2012-12-05 | S |
| Barbo William D | Officer | 23,337 | 2024-11-07 | G |
| BATHGATE BRIAN | Officer | 20,628 | 2006-02-27 | S |
| WALLMAN RICHARD F | Director | 19,007 | 2024-11-06 | G |
| THIER SAMUEL O MD | Director | 18,230 | 2012-05-09 | A |
| GELLER JORG | Officer | 17,820 | 2015-02-25 | M |
| Pease Flavia | Officer | 17,482 | 2025-05-30 | A |
| MACKAY MARTIN | Director | 17,137 | 2026-05-08 | A |
| ELLIOTT DAVID J | Officer | 17,035 | 2007-06-29 | M |
| Knell Michael Gunnar | Officer | 14,878 | 2026-08-06 | S |
| ROGERS DOUGLAS E | Director | 12,859 | 2010-05-07 | A |
| Ventresca Nicholas | Officer | 12,713 | 2007-04-02 | F |
| Ho John C | Officer | 12,710 | 2007-02-23 | A |
| GILLETT NANCY | Officer | 11,756 | 2016-03-02 | S |
| Wells Stephanie B | Officer | 11,500 | 2007-04-02 | A |
| Mintz Mark | Officer | 9,915 | 2026-05-29 | A |
| Kochevar Deborah Turner | Director | 7,894 | 2024-05-13 | A |
| Parisotto Shannon M | Officer | 6,963 | 2026-10-21 | M |
| Llado George Sr. | Director | 6,702 | 2026-05-08 | A |
| WILSON VIRGINIA M | Director | 6,349 | 2026-05-08 | A |
| Walker Cheri L | Officer | 6,262 | 2007-05-01 | A |
| MASSARO GEORGE | Director · Officer | 5,680 | 2025-05-15 | S |
| Crowley John J | Officer | 5,599 | 2016-10-01 | F |
| Kemps-Polanco Reshema | Director | 4,563 | 2026-05-08 | A |
| Mangeolle Jean-Paul | Director | 3,886 | 2019-05-22 | A |
| Thompson Craig B. | Director | 3,851 | 2026-05-08 | A |
| Barg Steven | Director | 3,287 | 2026-06-02 | A |
| KUO JOHN W | Officer | 3,171 | 2020-06-01 | A |
| Enyedy Mark J | Director | 2,384 | 2026-05-08 | A |
| Ceesay Abraham | Director | 2,384 | 2026-05-08 | A |
| Graves Paul W | Director | 2,384 | 2026-05-08 | A |
| Andrews Nancy C | Director | 2,011 | 2026-08-18 | M |
Recent Filings
| Date | Owner | Activity | Shares | Price | Owned After |
|---|---|---|---|---|---|
| 2026-10-22 | FOSTER JAMES C | Option exercise (derivative) | 24,042 | $0.00 | 0 |
| 2026-10-22 | FOSTER JAMES C | Open-market sale | 24,042 | $350.00 | 31,596 |
| 2026-10-22 | FOSTER JAMES C | Option exercise | 24,042 | $244.41 | 55,638 |
| 2026-10-21 | Parisotto Shannon M | Option exercise (derivative) | 2,156 | $0.00 | 719 |
| 2026-10-21 | Parisotto Shannon M | Open-market sale | 2,156 | $344.41 | 4,807 |
| 2026-10-21 | Parisotto Shannon M | Option exercise | 2,156 | $244.41 | 6,963 |
| 2026-10-05 | Parisotto Shannon M | Option exercise (derivative) | 981 | $0.00 | 2,944 |
| 2026-10-05 | Parisotto Shannon M | Open-market sale | 981 | $308.44 | 4,807 |
| 2026-10-05 | Parisotto Shannon M | Option exercise | 981 | $208.44 | 5,788 |
| 2026-09-30 | Coleman Glenn | Open-market buy | 10 | $297.43 | 27,762 |
| 2026-08-25 | FOSTER JAMES C | Option exercise (derivative) | 12,429 | $0.00 | 12,429 |
| 2026-08-25 | FOSTER JAMES C | Option exercise (derivative) | 21,132 | $0.00 | 7,044 |
| 2026-08-25 | FOSTER JAMES C | Open-market sale | 33,561 | $300.00 | 31,596 |
| 2026-08-25 | FOSTER JAMES C | Option exercise | 12,429 | $208.44 | 65,157 |
| 2026-08-25 | FOSTER JAMES C | Option exercise | 21,132 | $194.12 | 52,728 |
| 2026-08-19 | Parisotto Shannon M | Option exercise (derivative) | 2,039 | $0.00 | 2,039 |
| 2026-08-19 | Parisotto Shannon M | Open-market sale | 2,039 | $294.12 | 4,807 |
| 2026-08-19 | Parisotto Shannon M | Option exercise | 2,039 | $194.12 | 6,846 |
| 2026-08-19 | Girshick Birgit | Gift | 528 | $0.00 | 35,485 |
| 2026-08-18 | Andrews Nancy C | Option exercise (derivative) | 573 | $0.00 | 0 |
| 2026-08-18 | Andrews Nancy C | Open-market sale | 573 | $285.24 | 1,438 |
| 2026-08-18 | Andrews Nancy C | Option exercise | 573 | $164.30 | 2,011 |
| 2026-08-11 | Parisotto Shannon M | Option exercise (derivative) | 3,714 | $0.00 | 0 |
| 2026-08-11 | Parisotto Shannon M | Open-market sale | 3,714 | $279.66 | 4,807 |
| 2026-08-11 | Parisotto Shannon M | Option exercise | 3,714 | $179.66 | 8,521 |
| 2026-08-11 | Girshick Birgit | Option exercise (derivative) | 6,500 | $0.00 | 0 |
| 2026-08-11 | Girshick Birgit | Open-market sale | 6,500 | $279.90 | 36,013 |
| 2026-08-11 | Girshick Birgit | Option exercise | 6,500 | $179.66 | 42,513 |
| 2026-08-10 | FOSTER JAMES C | Option exercise (derivative) | 28,733 | $0.00 | 0 |
| 2026-08-10 | FOSTER JAMES C | Open-market sale | 28,733 | $275.00 | 31,596 |
| 2026-08-10 | FOSTER JAMES C | Option exercise | 28,733 | $179.66 | 60,329 |
| 2026-08-10 | LaPlume Joseph W | Gift | 257 | $0.00 | 31,041 |
| 2026-08-06 | Creamer Victoria L | Option exercise (derivative) | 4,179 | $0.00 | 0 |
| 2026-08-06 | Creamer Victoria L | Open-market sale | 4,179 | $259.16 | 30,051 |
| 2026-08-06 | Creamer Victoria L | Option exercise | 4,179 | $179.66 | 34,230 |
| 2026-08-06 | Knell Michael Gunnar | Option exercise (derivative) | 736 | $0.00 | 736 |
| 2026-08-06 | Knell Michael Gunnar | Option exercise (derivative) | 1,205 | $0.00 | 402 |
| 2026-08-06 | Knell Michael Gunnar | Option exercise (derivative) | 404 | $0.00 | 0 |
| 2026-08-06 | Knell Michael Gunnar | Open-market sale | 1,205 | $258.53 | 12,588 |
| 2026-08-06 | Knell Michael Gunnar | Open-market sale | 404 | $258.53 | 13,793 |
Source: SEC EDGAR Form 4 filings. For informational purposes only — not investment advice.