| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | ATRA | Common Stock | Sale | -$36.1K | -2.5K | -1.58% | $14.46* | 156K | Feb 7, 2022 | Direct | F1, F2, F3 |
| Id | Content |
|---|---|
| F1 | Shares sold pursuant to a 10b5-1 arrangement to satisfy tax obligations in connection with the vesting of previously granted Restricted Stock Units. |
| F2 | The sale price of the reporting person's shares represents the weighted average price of all shares sold by a broker on February 7, 2021 on behalf of a group of employees of the Issuer to satisfy the payment of withholding tax liability of such employees. The prices actually received ranged from $14.46 to $14.75, inclusive. The reporting person will provide to the issuer, any security holder of the issuer, or the SEC staff, upon request, information regarding the number of shares sold on behalf of the group at each price within the range. |
| F3 | Includes 484 shares purchased under the Issuer's Employee Stock Purchase Plan on November 30, 2021. |