| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| DuRoss Amy | Director | 3303 MONTE VILLA PARKWAY, SUITE 310, BOTHELL | /s/ Amy DuRoss | 2025-11-28 | 0001854968 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | BLFS | Common Stock | Sale | -$54K | -2K | -8.1% | $27.00 | 22.7K | Nov 25, 2025 | Direct | |
| transaction | BLFS | Common Stock | Sale | -$54K | -2K | -8.82% | $27.00 | 20.7K | Nov 26, 2025 | Direct |