PRIMECAP MANAGEMENT CO/CA/ 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/CA/ | 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/CA/ | 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/CA/ | 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/CA/ | 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/CA/ | 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/CA/ | 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/CA/ | 4,342,491 9.820% | 799,900 (+22.58%) | Filing |
| 2020-04-24 3:39 pm Purchase | 2009-02-28 | 13G | Rhythm Pharmaceuticals, Inc. RYTM | PRIMECAP MANAGEMENT CO/CA/ | 3,542,591 8.040% | 3,542,591 (New Position) | Filing |