| Trade Date | Insider | Insider Title | Security Type | Execution Date | Exercise Date | Expiration Date | Share Price | Quantity | Shares Owned | Shares Code | Transaction Code | Swap | Under SEC Title | Under Sec Shares | Nature of Ownership | SEC Link |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2020-07-28 | Third Rock Ventures Iii, L.p. | Series A-2 Preferred Stock | $0.00 | 875,000 | 0 | D | C | 0 | Common Stock | 875,000 | D | Form 4 | ||||
| 2020-07-28 | Third Rock Ventures Iii, L.p. | Series B Preferred Stock | $0.00 | 4,508,333 | 0 | D | C | 0 | Common Stock | 4,508,333 | D | Form 4 | ||||
| 2020-07-28 | Third Rock Ventures Iii, L.p. | Series D Preferred Stock | $0.00 | 39,216 | 0 | D | C | 0 | Common Stock | 39,216 | D | Form 4 | ||||
| 2020-07-28 | Column Group L P | Series A-1 Preferred Stock | $0.00 | 600,000 | 0 | D | C | 0 | Common Stock | 600,000 | D | Form 4 | ||||
| 2020-07-28 | Column Group L P | Series A-2 Preferred Stock | $0.00 | 875,000 | 0 | D | C | 0 | Common Stock | 875,000 | D | Form 4 | ||||
| 2020-07-28 | Column Group L P | Series B Preferred Stock | $0.00 | 1,836,000 | 0 | D | C | 0 | Common Stock | 1,836,000 | D | Form 4 | ||||
| 2020-07-28 | Column Group L P | Series B Preferred Stock | $0.00 | 1,989,000 | 0 | D | C | 0 | Common Stock | 1,989,000 | D | Form 4 | ||||
| 2020-07-28 | Column Group L P | Series D Preferred Stock | $0.00 | 686,274 | 0 | D | C | 0 | Common Stock | 686,274 | D | Form 4 | ||||
| 2020-07-28 | Column Group L P | Series D Preferred Stock | $0.00 | 686,274 | 0 | D | C | 0 | Common Stock | 686,274 | D | Form 4 | ||||
| 2020-07-28 | Column Group L P | Series A-1 Preferred Stock | $0.00 | 600,000 | 0 | D | C | 0 | Common Stock | 600,000 | D | Form 4 | ||||
| 2020-07-28 | Column Group L P | Series A-2 Preferred Stock | $0.00 | 875,000 | 0 | D | C | 0 | Common Stock | 875,000 | D | Form 4 | ||||
| 2020-07-28 | Column Group L P | Series B Preferred Stock | $0.00 | 1,836,000 | 0 | D | C | 0 | Common Stock | 1,836,000 | D | Form 4 | ||||
| 2020-07-28 | Column Group L P | Series B Preferred Stock | $0.00 | 1,989,000 | 0 | D | C | 0 | Common Stock | 1,989,000 | D | Form 4 | ||||
| 2020-07-28 | Column Group L P | Series D Preferred Stock | $0.00 | 686,274 | 0 | D | C | 0 | Common Stock | 686,274 | D | Form 4 | ||||
| 2020-07-28 | Column Group L P | Series D Preferred Stock | $0.00 | 686,274 | 0 | D | C | 0 | Common Stock | 686,274 | D | Form 4 | ||||
| 2020-07-28 | Robert Tjian | Series A-2 Preferred Stock | $0.00 | 41,666 | 0 | D | C | 0 | Common Stock | 41,666 | I | Form 4 | ||||
| 2020-07-28 | Robert Tjian | Series B Preferred Stock | $0.00 | 50,000 | 0 | D | C | 0 | Common Stock | 50,000 | I | Form 4 | ||||
| 2020-07-28 | Group, Llc Redmile | Series D Redeemable Convertible Preferred Stock | $0.00 | 1,176,470 | 0 | D | C | 0 | Common Stock | 1,176,470 | I | Form 4 | ||||
| 2020-07-28 | Wellington Biomedical Innovation Master Investors (cayman) I L.p. | Series D Preferred Stock | $0.00 | 784,313 | 0 | D | C | 0 | Common Stock | 784,313 | D | Form 4 | ||||
| 2020-10-21 | Arthur T Sands | Stock Option (right to buy) | 2030-10-20 | $0.00 | 804,170 | 804,170 | A | A | 0 | Common Stock | 804,170 | D | Form 4 |
