| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| DuRoss Amy | Director | 3303 MONTE VILLA PARKWAY, SUITE 310, BOTHELL | /s/ Amy DuRoss | 21 Nov 2025 | 0001854968 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | BLFS | Common Stock | Sale | $11,686 | -477 | -1.6% | $24.50 | 30,210 | 19 Nov 2025 | Direct | |
| transaction | BLFS | Common Stock | Sale | $110,859 | -4,523 | -15% | $24.51 | 25,687 | 20 Nov 2025 | Direct | |
| transaction | BLFS | Common Stock | Sale | $26,000 | -1,000 | -3.9% | $26.00 | 24,687 | 21 Nov 2025 | Direct |