| Charles River Laboratories | Amended | MA | Wilmington | 71 | Mar 25, 2026 | Apr 24, 2026 | |
| Charles River Laboratories | Amended | MA | Wilmington | 71 | Feb 19, 2026 | Apr 24, 2026 | |
| Charles River Laboratories, Inc. | Closure | MD | Hanover | 20 | Feb 2, 2026 | Mar 23, 2026 | |
| Charles River Laboratories | Amended | MA | Wilmington | 71 | Dec 16, 2025 | Jan 6, 2026 | |
| Charles River Laboratories, Inc. | Layoff | MA | Wilmington | 68 | Nov 10, 2025 | Jan 6, 2026 | |
| Charles River Laboratories, Inc. | Closure | MD | Frederick | 13 | Apr 2, 2025 | Mar 28, 2025 | |
| Charles River Laboratories, Inc. | Closure | MD | Frederick | 7 | Jan 29, 2025 | Mar 28, 2025 | |
| Charles River Laboratories, Inc. | Closure | NC | Durham | 37 | Jan 28, 2025 | Oct 24, 2025 | |
| Charles River Laboratories, Inc. | Closure | NC | Durham | 37 | Jan 27, 2025 | Oct 24, 2025 | |
| Charles River Laboratories, Inc. | Closure | IL | Skokie | 94 | Nov 6, 2024 | Jan 31, 2025 | |
| Charles River Laboratories | Layoff | MD | Frederick | 13 | Aug 2, 2024 | Sep 30, 2024 | |
| Charles River Laboratories | Closure | MD | Frederick | 14 | Mar 14, 2024 | May 13, 2024 | |
| Charles River Laboratories, Inc. | Closure | CA | -- | 55 | Jul 19, 2023 | Sep 19, 2023 | |
| Charles River Laboratories, Inc. | Closure | CA | San Diego | 24 | Mar 19, 2019 | May 20, 2019 | |
| Charles River Laboratories, Inc. | -- | MD | Frederick | 57 | Nov 13, 2017 | -- | |
| Charles River Laboratories | -- | MD | Frederick | 76 | Jul 9, 2014 | Sep 25, 2014 | |