| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | ATHX | Common Stock | Tax liability | $1,377 | -1,377 | -0.94% | $1.00 | 145,206 | 17 Dec 2021 | Direct | F1, F2 |
| Id | Content |
|---|---|
| F1 | Shares withheld from the quarterly vesting of annual restricted stock unit awards related to the tax withholding obligation. |
| F2 | Securities beneficially owned are comprised of (1) 28,539 shares of common stock owned and (2) unvested restricted stock units aggregating 116,667 related to annual awards, which vest quarterly over a four-year period from date of grant. |