| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | ATHX | Common Stock | Sale | $30,733 | -21,050 | -2.7% | $1.46 | 747,941 | 15 Sep 2021 | Direct | F1, F2 |
| transaction | ATHX | Common Stock | Sale | $7,250 | -5,000 | -0.67% | $1.45 | 742,941 | 16 Sep 2021 | Direct | F1, F3 |
| transaction | ATHX | Common Stock | Tax liability | $17,612 | -11,981 | -1.6% | $1.47 | 730,960 | 17 Sep 2021 | Direct | F4, F5 |
| Id | Content |
|---|---|
| F1 | Shares sold pursuant to a predefined Rule 10b5-1 trading plan. |
| F2 | The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $1.44 to $1.48, inclusive, in accordance with a previously established 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 $1.44 to $1.47, inclusive, in accordance with a previously established Rule 10b5-1 trading plan. |
| F4 | Shares withheld from the quarterly vesting of annual restricted stock unit awards related to the tax withholding obligation. |
| F5 | Securities beneficially owned are comprised of (1) 457,194 shares of common stock owned and (2) unvested restricted stock units aggregating 273,766 related to annual awards, which vest quarterly over a four-year period from date of grant. |