The Vanguard Group 13D and 13G filings for Alkermes plc:
- Schedule 13D must be filed within ten days after a person or an organization acquires beneficial ownership of more than 5% of a voting class of a company's equity securities.
- Shares have been adjusted for stock splits.
| Reported DateTime | Transaction Date | Type | Company Symbol | Filed By Symbol | Shares Owned % Owned | Shares Vs. Prev Report | View |
| 2024-11-12 1:28 pm Unchanged | 2024-09-30 | 13G | Alkermes plc ALKS | The Vanguard Group | 18,971,637 11.520% | 0 (Unchanged) | Filing |
| 2024-11-04 10:58 am Sale | 2024-09-30 | 13G | Alkermes plc ALKS | The Vanguard Group | 18,971,637 11.520% | -1,983,817 (-9.47%) | Filing |
| 2024-02-13 4:59 pm Purchase | 2023-12-29 | 13G | Alkermes plc ALKS | The Vanguard Group | 20,955,454 12.560% | 2,416,376 (+13.03%) | Filing |
| 2023-02-09 11:07 am Purchase | 2022-12-30 | 13G | Alkermes plc ALKS | The Vanguard Group | 18,539,078 11.280% | 1,647,368 (+9.75%) | Filing |
| 2022-02-09 3:16 pm Purchase | 2021-12-31 | 13G | Alkermes plc ALKS | The Vanguard Group | 16,891,710 10.450% | 291,221 (+1.75%) | Filing |
| 2021-07-12 10:21 am Purchase | 2021-06-30 | 13G | Alkermes plc ALKS | The Vanguard Group | 16,600,489 10.350% | 1,164,013 (+7.54%) | Filing |
| 2021-02-10 10:30 am Purchase | 2020-12-31 | 13G | Alkermes plc ALKS | The Vanguard Group | 15,436,476 9.700% | 688,827 (+4.67%) | Filing |