PRIMECAP MANAGEMENT CO 13D and 13G filings for Rhythm Pharmaceuticals, Inc.:
- 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 |
| 2025-02-13 6:36 pm Sale |
2024-12-31 | 13G | Rhythm Pharmaceuticals, Inc. RYTM |
PRIMECAP MANAGEMENT CO | 6,571,190 10.690% |
-645,721 (-8.95%) |
Filing |
| 2024-11-12 4:01 pm Sale |
2024-09-30 | 13G | Rhythm Pharmaceuticals, Inc. RYTM |
PRIMECAP MANAGEMENT CO | 7,216,911 11.810% |
-835,737 (-10.38%) |
Filing |
| 2024-02-12 4:01 pm Purchase |
2023-12-31 | 13G | Rhythm Pharmaceuticals, Inc. RYTM |
PRIMECAP MANAGEMENT CO | 8,052,648 13.630% |
1,141,506 (+16.52%) |
Filing |
| 2023-02-09 4:01 pm Purchase |
2022-12-31 | 13G | Rhythm Pharmaceuticals, Inc. RYTM |
PRIMECAP MANAGEMENT CO | 6,911,142 12.270% |
654,151 (+10.45%) |
Filing |
| 2022-02-10 12:27 pm Purchase |
2021-12-31 | 13G | Rhythm Pharmaceuticals, Inc. RYTM |
PRIMECAP MANAGEMENT CO | 6,256,991 12.450% |
686,300 (+12.32%) |
Filing |
| 2021-03-08 11:04 am Purchase |
2009-02-28 | 13G | Rhythm Pharmaceuticals, Inc. RYTM |
PRIMECAP MANAGEMENT CO | 5,570,691 11.140% |
1,228,200 (+28.28%) |
Filing |
| 2021-02-12 12:02 pm Purchase |
2009-02-28 | 13G | Rhythm Pharmaceuticals, Inc. RYTM |
PRIMECAP MANAGEMENT CO | 4,342,491 9.820% |
799,900 (+22.58%) |
Filing |