| Type | Filed | Filer | Subject | Shares Owned | Percent Owned | |
|---|---|---|---|---|---|---|
| SC 13G/A | 2023-02-14 | Rock Springs Capital Management LP | Sierra Oncology, Inc. | 0 | 0.0% | EDGAR |
| SC 13G/A | 2023-02-10 | Versor Investments LP | Sierra Oncology, Inc. | 0 | 0.0% | EDGAR |
| SC 13D/A | 2022-07-11 | Abingworth LLP | Sierra Oncology, Inc. | 0 | 0.0% | EDGAR |
| SC 13G/A | 2022-07-05 | Vivo Capital IX, LLC | Sierra Oncology, Inc. | 0 | 0.0% | EDGAR |
| SC 13D/A | 2022-05-06 | Longitude Capital Partners III, LLC | Sierra Oncology, Inc. | 1,477,125 | 5.7% | EDGAR |
| SC 13G | 2022-04-22 | Versor Investments LP | Sierra Oncology, Inc. | 1,266,927 | 5.3% | EDGAR |
| SC 13G/A | 2022-03-29 | Frazier Life Sciences Public Fund, L.P. | Sierra Oncology, Inc. | 522,663 | 2.2% | EDGAR |
| SC 13D/A | 2022-03-21 | Abingworth LLP | Sierra Oncology, Inc. | 2,193,626 | 8.9% | EDGAR |
| SC 13D/A | 2022-03-15 | ORBIMED ADVISORS LLC | Sierra Oncology, Inc. | 3,044,753 | 12.2% | EDGAR |
| SC 13G/A | 2022-02-15 | Rock Springs Capital Management LP | Sierra Oncology, Inc. | 1,184,793 | 7.9% | EDGAR |
| SC 13G/A | 2022-02-14 | CAXTON CORP | Sierra Oncology, Inc. | 1,119,322 | 7.0% | EDGAR |
| SC 13G/A | 2022-02-14 | Venrock Healthcare Capital Partners II, L.P. | Sierra Oncology, Inc. | 984,746 | 6.1% | EDGAR |
| SC 13G/A | 2022-02-11 | New Leaf Biopharma Opportunities I, L.P. | Sierra Oncology, Inc. | 125,511 | 0.6% | EDGAR |
| SC 13G/A | 2022-02-11 | Vivo Capital IX, LLC | Sierra Oncology, Inc. | 431,947 | 2.3% | EDGAR |
| SC 13D/A | 2022-02-10 | Abingworth LLP | Sierra Oncology, Inc. | 2,193,626 | 11.3% | EDGAR |
| SC 13G/A | 2022-02-10 | ADAGE CAPITAL PARTNERS GP, L.L.C. | Sierra Oncology, Inc. | 1,230,468 | 8.2% | EDGAR |
| SC 13G/A | 2022-02-10 | GILEAD SCIENCES INC | Sierra Oncology, Inc. | 1,450,566 | 9.2% | EDGAR |
| SC 13G | 2022-02-07 | PFM Health Sciences, LP | Sierra Oncology, Inc. | - | 5.5% | EDGAR |
| SC 13D/A | 2022-02-04 | Longitude Capital Partners III, LLC | Sierra Oncology, Inc. | 3,441,896 | 16.5% | EDGAR |
| SC 13D/A | 2022-02-02 | ORBIMED ADVISORS LLC | Sierra Oncology, Inc. | 3,044,753 | 15.3% | EDGAR |