BLFS · Insider Trading
BioLife Solutions Inc.
Every open-market purchase and sale reported by BLFS officers, directors and 10%+ beneficial owners on SEC Form 4, which must be filed within two business days of the transaction. Sales often reflect scheduled 10b5-1 plans or tax withholding rather than a directional view, so read counts alongside the size and the filer.
| Filed | Insider | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-09-22 | Aby J. Mathew | EVP & Chief Scientific Officer | F | −564 | −$20.69K |
| 2026-09-22 | Troy Wichterman | Chief Financial Officer | F | −937 | −$34.38K |
| 2026-09-22 | Sean Werner | Chief Technology Officer | F | −421 | −$15.45K |
| 2026-09-22 | Roderick De Greef | President and CEO | F | −2,775 | −$101.81K |
| 2026-09-22 | Todd Berard | Chief Marketing Officer | F | −470 | −$17.24K |
| 2026-09-10 | Aby J. Mathew | EVP & Chief Scientific Officer | F | −627 | −$22.18K |
| 2026-09-10 | Troy Wichterman | Chief Financial Officer | F | −1,026 | −$36.30K |
| 2026-09-10 | Todd Berard | Chief Marketing Officer | F | −356 | −$12.60K |
| 2026-07-21 | Sean Werner | Chief Technology Officer | F | −275 | −$8.02K |
| 2026-07-13 | Todd Berard | Chief Marketing Officer | F | −293 | −$8.14K |
| 2026-07-13 | Aby J. Mathew | EVP & Chief Scientific Officer | F | −516 | −$14.34K |
| 2026-07-13 | Troy Wichterman | Chief Financial Officer | F | −844 | −$23.45K |
| 2026-06-22 | Roderick De Greef | President and CEO | F | −2,775 | −$72.26K |
| 2026-06-22 | Aby J. Mathew | EVP & Chief Scientific Officer | F | −564 | −$14.69K |
| 2026-06-22 | Todd Berard | Chief Marketing Officer | F | −470 | −$12.24K |
| 2026-06-22 | Troy Wichterman | Chief Financial Officer | F | −937 | −$24.40K |
| 2026-06-22 | Sean Werner | Chief Technology Officer | F | −420 | −$10.94K |
| 2026-06-10 | Aby J. Mathew | EVP & Chief Scientific Officer | F | −627 | −$16.36K |
| 2026-06-10 | Troy Wichterman | Chief Financial Officer | F | −1,026 | −$26.78K |
| 2026-06-10 | Todd Berard | Chief Marketing Officer | F | −356 | −$9.29K |
| 2026-05-21 | Casdin Partners GP, LLC | 10%+ Owner | Sell | −4,800,000 | −$112.50M |
| 2026-04-10 | Troy Wichterman | Chief Financial Officer | F | −844 | −$16.26K |
| 2026-04-10 | Aby J. Mathew | EVP & Chief Scientific Officer | F | −515 | −$9.92K |
| 2026-04-10 | Todd Berard | Chief Marketing Officer | F | −293 | −$5.65K |
| 2026-03-23 | Todd Berard | Chief Marketing Officer | F | −1,879 | −$35.93K |
| 2026-03-23 | Karen A. Foster | Chief Quality and Operations | F | −1,907 | −$36.46K |
| 2026-03-23 | Troy Wichterman | Chief Financial Officer | F | −3,749 | −$71.68K |
| 2026-03-23 | Aby J. Mathew | EVP & Chief Scientific Officer | F | −2,255 | −$43.12K |
| 2026-03-23 | Sarah Aebersold | Chief Human Resources Officer | F | −931 | −$17.80K |
| 2026-03-23 | Roderick De Greef | President and CEO | F | −11,101 | −$212.25K |
| 2026-03-23 | Sean Werner | Chief Technology Officer | F | −1,681 | −$32.14K |
| 2026-03-09 | Karen A. Foster | Chief Quality and Operations | Sell | −97,423 | −$1.96M |
| 2026-03-05 | Troy Wichterman | Chief Financial Officer | Sell | −588 | −$12.20K |
| 2026-03-05 | Sarah Aebersold | Chief Human Resources Officer | Sell | −219 | −$4.54K |
| 2026-03-05 | Todd Berard | Chief Marketing Officer | Sell | −353 | −$7.32K |
| 2026-03-05 | Karen A. Foster | Chief Quality and Operations | Sell | −418 | −$8.67K |
| 2026-03-05 | Aby J. Mathew | EVP & Chief Scientific Officer | Sell | −529 | −$10.97K |
| 2026-03-05 | Sean Werner | Chief Technology Officer | Sell | −111 | −$2.30K |
| 2026-02-26 | Timothy L. Moore | Director | A | +8,170 | — |
| 2026-02-26 | Amy DuRoss | Director | A | +8,170 | — |
| 2026-02-26 | Anthony Hunt | Director | A | +8,170 | — |
| 2026-02-26 | Joydeep Goswami | Director | A | +8,170 | — |
| 2026-02-26 | Sarah Aebersold | Chief Human Resources Officer | MIXED | +17,814 | −$129.88K |
| 2026-02-26 | Rachel Ellingson | Director | A | +8,170 | — |
| 2026-02-26 | Roderick De Greef | President and CEO | MIXED | +354,849 | −$3.47M |
| 2026-02-26 | Sean Werner | Chief Technology Officer | A | +24,116 | — |
| 2026-02-26 | Karen A. Foster | Chief Quality and Operations | MIXED | +19,099 | −$294.74K |
| 2026-02-26 | Aby J. Mathew | EVP & Chief Scientific Officer | MIXED | +44,116 | −$353.00K |
| 2026-02-26 | Catherine Coste | Director | A | +8,170 | — |
| 2026-02-26 | Troy Wichterman | Chief Financial Officer | MIXED | +70,491 | −$578.14K |
| Insider | Role | Shares Held | Value |
|---|---|---|---|
| Eli Casdin | 10%+ Owner | 16,306,694 | $608.24M |
| Casdin Capital, LLC | 10%+ Owner | 15,264,330 | $569.36M |
| Casdin Partners Master Fund, L.P. | 10%+ Owner | 14,664,330 | $546.98M |
| Casdin Partners GP, LLC | 10%+ Owner | 13,228,700 | $493.43M |
| Roderick De Greef | President and CEO | 728,196 | $27.16M |
| Aby J. Mathew | EVP & Chief Scientific Officer | 387,269 | $14.45M |
| Troy Wichterman | Chief Financial Officer | 211,286 | $7.88M |
| Todd Berard | Chief Marketing Officer | 161,823 | $6.04M |
| Karen A. Foster | Chief Quality and Operations | 111,335 | $4.15M |
| Sarah Aebersold | Chief Human Resources Officer | 92,429 | $3.45M |
| Rachel Ellingson | Director | 57,995 | $2.16M |
| Joydeep Goswami | Director | 53,156 | $1.98M |
| Sean Werner | Chief Technology Officer | 47,135 | $1.76M |
| Timothy L. Moore | Director | 44,943 | $1.68M |
| Amy DuRoss | Director | 26,857 | $1.00M |
| Anthony Hunt | Director | 15,046 | $561.22K |
| Catherine Coste | Director | 13,871 | $517.39K |
Form 4 reports a change in beneficial ownership by an officer, director or 10%+ holder, and must be filed within two business days of the transaction — so this is close to real time, unlike the 45-day-lagged 13F institutional data.
Transaction codes matter more than the raw buy/sell count. Code P is an open-market purchase — an insider choosing to buy with their own money, which is the signal most research treats as informative. Code S is a sale, but sales are frequently pre-scheduled under a 10b5-1 plan or cover tax withholding on vesting equity, so a run of sales often says nothing directional. Codes A and M are grants and option exercises rather than open-market decisions.
Full filing history and per-insider positions are on the BLFS quote page; the site-wide leaderboard is on the insider transactions hub.
Market data may be delayed, incomplete, or inaccurate. Not a recommendation to buy, sell, or hold any security. Verify quotes with your broker before trading. See Terms §17.