| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | ATHX | Common Stock | Tax liability | $1.68 | -67 | -0.1% | $0.0250 | 70,010 | 18 Dec 2023 | 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) 68,024 shares of common stock owned and (2) unvested restricted stock units aggregating 1,986 related to annual awards, which vest quarterly over a four-year period from date of grant. |