| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | ATHX | Common Stock | Tax liability | $12,104 | -8,234 | -1.6% | $1.47 | 501,287 | 17 Sep 2021 | Direct | F1 |
| transaction | ATHX | Common Stock | Sale | $42,300 | -30,000 | -6% | $1.41 | 471,287 | 20 Sep 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 $1.40 to $1.44, inclusive, in accordance with a previously established Rule 10b5-1 trading plan. |
| F4 | Securities beneficially owned are comprised of (1) 197,521 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. |