| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes | 
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | BLFS | Common Stock | Sale | -$72.7K | -2.5K | -20.9% | $29.06 | 9.46K | May 17, 2021 | Direct | F1 | 
| Id | Content | 
|---|---|
| F1 | The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person effective as of November 12, 2020. |