🕵️ Biolife Solutions Inc ($BLFS)
SEC insider & ownership activity, last 12 months · CIK 834365 · every row links its SEC filing
Over the last 12 months insiders sold $56.6M with no open-market buying against it. Casdin Partners Master Fund, L.P. sold $49.5M (Oct–May). Eli Casdin trimmed 12.4% → 9.7%; Casdin Capital, LLC trimmed 12.4% → 9.7%. No red-flag 8-Ks in the window.
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Monthly net open-market insider flow, last 12 months (up = net buying)
Insider flow
0 buyers, $0 (0 lots) · 10 sellers, $56.6M (50 lots)
| Insider | Buys | Bought | Sells | Sold | Last |
|---|---|---|---|---|---|
| Casdin Partners Master Fund, L.P. | 0 | – | 4 | $49.5M | May 21, 2026 |
| De Greef Roderick | 0 | – | 4 | $3.6M | Nov 13, 2025 |
| Karen Foster | 0 | – | 8 | $2.1M | Mar 23, 2026 |
| Wichterman Troy | 0 | – | 6 | $873K | Mar 3, 2026 |
| Duross Amy | 0 | – | 6 | $306K | Dec 15, 2025 |
| Aby J. Mathew | 0 | – | 5 | $65K | Mar 3, 2026 |
| Sarah Aebersold | 0 | – | 7 | $63K | Mar 3, 2026 |
| Goswami Joydeep | 0 | – | 2 | $48K | Oct 24, 2025 |
| Berard Todd | 0 | – | 5 | $42K | Mar 3, 2026 |
| Werner Sean | 0 | – | 3 | $13K | Mar 3, 2026 |
5%+ holders
| Holder | Stake | Class | Schedule | Event | |
|---|---|---|---|---|---|
| Casdin Capital, LLC | 9.7% | 13G | Jun 4, 2026 | filing ↗ | |
| Casdin Partners Master Fund, L.P. | 9.7% | 13G | Jun 4, 2026 | filing ↗ | |
| Casdin Partners GP, LLC | 9.7% | 13G | Jun 4, 2026 | filing ↗ | |
| Eli Casdin | 9.7% | 13G | Jun 4, 2026 | filing ↗ | |
| Eli Casdin | 9.7% | 13D | May 20, 2026 | filing ↗ | |
| Casdin Capital, LLC | 9.7% | 13D | May 20, 2026 | filing ↗ | |
| Casdin Partners Master Fund, L.P. | 9.7% | 13D | May 20, 2026 | filing ↗ | |
| Casdin Partners GP, LLC | 9.7% | 13D | May 20, 2026 | filing ↗ | |
| T. ROWE Price Investment Management, Inc. | 7.5% | 13G | Sep 8, 2026 | filing ↗ |
Planned insider sales (Form 144)
| Seller | Planned | Approx. sale date | |
|---|---|---|---|
| Casdin Partners Master Fund, L.P. | $15.6M | May 21, 2026 | filing ↗ |
| Casdin Partners Master Fund, L.P | $6.0M | May 20, 2026 | filing ↗ |
| Casdin Partners Master Fund, L.P. | $6.7M | May 19, 2026 | filing ↗ |
| Karen Foster | $49K | Mar 23, 2026 | filing ↗ |
| Karen Foster | $10K | Mar 9, 2026 | filing ↗ |
| Karen Foster | $2.0M | Mar 5, 2026 | filing ↗ |
| Sarah Aebersold | $17K | Dec 15, 2025 | filing ↗ |
| Troy Wichterman | $772K | Dec 4, 2025 | filing ↗ |
| Roderick de Greef | $789K | Nov 13, 2025 | filing ↗ |
| Roderick de Greef | $865K | Nov 12, 2025 | filing ↗ |
| DuRoss Amy | $317K | Nov 12, 2025 | filing ↗ |
| Roderick de Greef | $926K | Nov 11, 2025 | filing ↗ |
| De Greef Roderick | $1.0M | Oct 22, 2025 | filing ↗ |
| Goswami Joydeep | $279K | Oct 16, 2025 | filing ↗ |
| Casdin Partners Master Fund, L.P. | $21.4M | Oct 15, 2025 | filing ↗ |
Material events (8-K)
| Item | Event date | |
|---|---|---|
| Other events (8.01) | Sep 3, 2026 | filing ↗ |
| Earnings (2.02) | Aug 6, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Aug 6, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Aug 3, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Aug 3, 2026 | filing ↗ |
| Material agreement (1.01) | Jul 21, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Jul 21, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jul 21, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Jun 3, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jun 3, 2026 | filing ↗ |
| Earnings (2.02) | May 7, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | May 7, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Mar 2, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Mar 2, 2026 | filing ↗ |
| Earnings (2.02) | Feb 26, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Feb 26, 2026 | filing ↗ |
| Earnings (2.02) | Jan 12, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jan 12, 2026 | filing ↗ |
| Officer/director changes (5.02) | Jan 8, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Nov 17, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Nov 17, 2025 | filing ↗ |
| Earnings (2.02) | Nov 6, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Nov 6, 2025 | filing ↗ |