BLFS BioLife Solutions

• None no insider bought on the open market
• $33.7M sold by 5 insiders outside a trading plan
• $67K sold by 2 insiders under 10b5-1 plans

1. Insider
   Trade
   Value
   Traded, filed
2. Casdin Partners Master Fund, L.P. 10% owner, +3 joint filers
   Sale
   $28.1M 1,200,000 shares at $23.44 20% of stake
   Traded May 19–21 Filed May 21
   ↗
3. Karen A. Foster Chief Quality and Operations
   Planned sale
   $49K 2,577 shares at $19.17 2.3% of stake
   Traded Mar 23 Filed Mar 31
   ↗
4. Karen A. Foster Chief Quality and Operations
   Sale
   $2M 97,423 shares at $20.15 46% of stake
   Traded Mar 5–9 Filed Mar 9
   ↗
5. Sarah Aebersold Chief Human Resources Officer
   Planned sale
   $17K 713 shares at $24.46 0.9% of stake
   Traded Dec 15, 2025 Filed Dec 17, 2025
   ↗
6. Amy DuRoss Director
   Sale
   $49K 2,000 shares at $24.60 9.7% of stake
   Traded Dec 15, 2025 Filed Dec 17, 2025
   ↗
7. Troy Wichterman CFO
   Sale
   $772K 30,000 shares at $25.72 16% of stake
   Traded Dec 4, 2025 Filed Dec 5, 2025
   ↗
8. Amy DuRoss Director
   Sale
   $108K 4,000 shares at $27.00 16% of stake
   Traded Nov 25–26 Filed Nov 28, 2025
   ↗
9. Amy DuRoss Director
   Sale
   $149K 6,000 shares at $24.76 20% of stake
   Traded Nov 19–21 Filed Nov 21, 2025
   ↗
10. Roderick De Greef CEO
    Sale
    $2.6M 100,000 shares at $25.80 20% of stake
    Traded Nov 11–13 Filed Nov 13, 2025
    ↗
11. Joydeep Goswami Director
    Planned sale
    $48K 1,666 shares at $28.99 3.6% of stake
    Traded Oct 24, 2025 Filed Oct 28, 2025
    ↗
12. Joydeep Goswami Director
    Planned sale
    — 1,334 shares 2.8% of stake
    Traded Oct 16, 2025 Filed Oct 20, 2025
    ↗
13. Casdin Partners Master Fund, L.P. 10% owner, +3 joint filers
    Sale
    $21.4M 750,000 shares at $28.55 11% of stake
    Traded Oct 15, 2025 Filed Oct 17, 2025
    ↗

Also filed in the last 12 months, not counted as buying or selling: 42 share withholdings for taxes, 28 stock grants, 22 sales to cover taxes, and 11 sales back to the company.