| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | ATHX | Common Stock | Tax liability | $19,604 | -12,648 | -2.3% | $1.55 | 539,521 | 17 Jun 2021 | Direct | F1 |
| transaction | ATHX | Common Stock | Sale | $46,284 | -30,000 | -5.6% | $1.54 | 509,521 | 18 Jun 2021 | Direct | F2, F3, F4 |
| Id | Content |
|---|---|
| F1 | Shares withheld from the quarterly vesting of annual restricted stock unit awards related to the tax withholding obligation. |
| F2 | Shares sold pursuant to a predefined Rule 10b5-1 trading plan. |
| F3 | The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $1.51 to $1.565, inclusive, in accordance with a previously established Rule 10b5-1 trading plan. |
| F4 | Securities beneficially owned are comprised of (1) 210,932 shares of common stock owned and (2) unvested restricted stock units aggregating 298,589 related to annual awards, which vest quarterly over a four-year period from date of grant. |