BLFS
BioLife Solutions Inc
NASDAQ: BLFS · HEALTHCARE · MEDICAL INSTRUMENTS & SUPPLIES
$29.15
-3.67% today
Updated 2026-07-17
Market cap
$1.36B
P/E ratio
—
P/S ratio
13.36x
EPS (TTM)
$-0.24
Dividend yield
—
52W range
$18 – $30
Volume
0.9M
BioLife Solutions Inc (BLFS) Insider transactions
Net insider activity
Net selling (1,474,998 shares)
Buy transactions
18
Sell transactions
82
All transactions
| Date | Insider | Title | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-03-23 | FOSTER, KAREN A. | Chief Quality and Operations | Sale | 2,577 | $19.17 | $49401.09 |
| 2026-03-19 | WICHTERMAN, TROY | Chief Financial Officer | Sale | 3,749 | $19.12 | $71680.88 |
| 2026-03-19 | WERNER, SEAN | Chief Technology Officer | Sale | 1,681 | $19.12 | $32140.72 |
| 2026-03-19 | MATHEW, ABY J. | EVP & Chief Scientific Officer | Sale | 2,255 | $19.12 | $43115.60 |
| 2026-03-19 | FOSTER, KAREN A. | Chief Quality and Operations | Sale | 1,907 | $19.12 | $36461.84 |
| 2026-03-19 | DE, GREEF RODERICK | Director, President and CEO | Sale | 11,101 | $19.12 | $212251.12 |
| 2026-03-19 | BERARD, TODD | Chief Marketing Officer | Sale | 1,879 | $19.12 | $35926.48 |
| 2026-03-19 | AEBERSOLD, SARAH | Chief Human Resources Officer | Sale | 931 | $19.12 | $17800.72 |
| 2026-03-09 | FOSTER, KAREN A. | Chief Quality and Operations | Sale | 500 | $20.00 | $10000.00 |
| 2026-03-05 | FOSTER, KAREN A. | Chief Quality and Operations | Sale | 96,923 | $20.15 | $1.95M |
| 2026-03-03 | WICHTERMAN, TROY | Chief Financial Officer | Sale | 588 | $20.74 | $12195.12 |
| 2026-03-03 | WERNER, SEAN | Chief Technology Officer | Sale | 111 | $20.74 | $2302.14 |
| 2026-03-03 | MATHEW, ABY J. | EVP & Chief Scientific Officer | Sale | 529 | $20.74 | $10971.46 |
| 2026-03-03 | FOSTER, KAREN A. | Chief Quality and Operations | Sale | 418 | $20.74 | $8669.32 |
| 2026-03-03 | BERARD, TODD | Chief Marketing Officer | Sale | 353 | $20.74 | $7321.22 |
| 2026-03-03 | AEBERSOLD, SARAH | Chief Human Resources Officer | Sale | 219 | $20.74 | $4542.06 |
| 2026-02-24 | WICHTERMAN, TROY | Chief Financial Officer | Buy | 64,866 | — | — |
| 2026-02-24 | WICHTERMAN, TROY | Chief Financial Officer | Buy | 31,150 | — | — |
| 2026-02-24 | WICHTERMAN, TROY | Chief Financial Officer | Sale | 25,525 | $22.65 | $578141.25 |
| 2026-02-24 | WERNER, SEAN | Chief Technology Officer | Buy | 24,116 | — | — |
| 2026-02-24 | MOORE, TIMOTHY L. | Director | Buy | 8,170 | — | — |
| 2026-02-24 | MATHEW, ABY J. | EVP & Chief Scientific Officer | Buy | 39,605 | — | — |
| 2026-02-24 | MATHEW, ABY J. | EVP & Chief Scientific Officer | Buy | 20,096 | — | — |
| 2026-02-24 | MATHEW, ABY J. | EVP & Chief Scientific Officer | Sale | 15,585 | $22.65 | $353000.25 |
| 2026-02-24 | HUNT, ANTHONY | Director | Buy | 8,170 | — | — |
| 2026-02-24 | GOSWAMI, JOYDEEP | Director | Buy | 8,170 | — | — |
| 2026-02-24 | FOSTER, KAREN A. | Chief Quality and Operations | Buy | 32,112 | — | — |
| 2026-02-24 | FOSTER, KAREN A. | Chief Quality and Operations | Sale | 13,013 | $22.65 | $294744.45 |
| 2026-02-24 | ELLINGSON, RACHEL | Director | Buy | 8,170 | — | — |
| 2026-02-24 | DUROSS, AMY | Director | Buy | 8,170 | — | — |
| 2026-02-24 | DE, GREEF RODERICK | Director, President and CEO | Buy | 219,024 | — | — |
| 2026-02-24 | DE, GREEF RODERICK | Director, President and CEO | Buy | 170,291 | — | — |
| 2026-02-24 | DE, GREEF RODERICK | Director, President and CEO | Buy | 118,730 | — | — |
| 2026-02-24 | DE, GREEF RODERICK | Director, President and CEO | Sale | 86,186 | $22.65 | $1.95M |
| 2026-02-24 | DE, GREEF RODERICK | Director, President and CEO | Sale | 67,010 | $22.65 | $1.52M |
| 2026-02-24 | COSTE, CATHERINE | Director | Buy | 8,170 | — | — |
| 2026-02-24 | BERARD, TODD | Chief Marketing Officer | Buy | 22,479 | — | — |
| 2026-02-24 | BERARD, TODD | Chief Marketing Officer | Buy | 20,096 | — | — |
| 2026-02-24 | BERARD, TODD | Chief Marketing Officer | Sale | 8,846 | $22.65 | $200361.90 |
| 2026-02-24 | AEBERSOLD, SARAH | Chief Human Resources Officer | Buy | 23,548 | — | — |
| 2026-02-24 | AEBERSOLD, SARAH | Chief Human Resources Officer | Sale | 5,734 | $22.65 | $129875.10 |
| 2026-01-06 | WICHTERMAN, TROY | Chief Financial Officer | Sale | 990 | $25.59 | $25334.10 |
| 2026-01-06 | MATHEW, ABY J. | EVP & Chief Scientific Officer | Sale | 405 | $25.59 | $10363.95 |
| 2026-01-06 | FOSTER, KAREN A. | Chief Quality and Operations | Sale | 335 | $25.59 | $8572.65 |
| 2026-01-06 | BERARD, TODD | Chief Marketing Officer | Sale | 344 | $25.59 | $8802.96 |
| 2026-01-06 | AEBERSOLD, SARAH | Chief Human Resources Officer | Sale | 241 | $25.59 | $6167.19 |
| 2025-12-15 | DUROSS, AMY | Director | Sale | 2,000 | $24.60 | $49200.00 |
| 2025-12-15 | AEBERSOLD, SARAH | Chief Human Resources Officer | Sale | 713 | $24.46 | $17439.98 |
| 2025-12-09 | WICHTERMAN, TROY | Chief Financial Officer | Sale | 1,033 | $25.13 | $25959.29 |
| 2025-12-09 | MATHEW, ABY J. | EVP & Chief Scientific Officer | Sale | 631 | $25.13 | $15857.03 |
| 2025-12-09 | FOSTER, KAREN A. | Chief Quality and Operations | Sale | 519 | $25.13 | $13042.47 |
| 2025-12-09 | BERARD, TODD | Chief Marketing Officer | Sale | 358 | $25.13 | $8996.54 |
| 2025-12-09 | AEBERSOLD, SARAH | Chief Human Resources Officer | Sale | 233 | $25.13 | $5855.29 |
| 2025-12-04 | WICHTERMAN, TROY | Chief Financial Officer | Sale | 30,000 | $25.72 | $771600.00 |
| 2025-11-26 | DUROSS, AMY | Director | Sale | 2,000 | $27.00 | $54000.00 |
| 2025-11-25 | WICHTERMAN, TROY | Chief Financial Officer | Sale | 584 | $26.74 | $15616.16 |
| 2025-11-25 | WERNER, SEAN | Chief Technology Officer | Sale | 110 | $26.74 | $2941.40 |
| 2025-11-25 | MATHEW, ABY J. | EVP & Chief Scientific Officer | Sale | 526 | $26.74 | $14065.24 |
| 2025-11-25 | FOSTER, KAREN A. | Chief Quality and Operations | Sale | 415 | $26.74 | $11097.10 |
| 2025-11-25 | DUROSS, AMY | Director | Sale | 2,000 | $27.00 | $54000.00 |
| 2025-11-25 | BERARD, TODD | Chief Marketing Officer | Sale | 351 | $26.74 | $9385.74 |
| 2025-11-25 | AEBERSOLD, SARAH | Chief Human Resources Officer | Sale | 217 | $26.74 | $5802.58 |
| 2025-11-21 | DUROSS, AMY | Director | Sale | 1,000 | $26.00 | $26000.00 |
| 2025-11-20 | DUROSS, AMY | Director | Sale | 4,523 | $24.51 | $110858.73 |
| 2025-11-19 | DUROSS, AMY | Director | Sale | 477 | $24.50 | $11686.50 |
| 2025-11-13 | DE, GREEF RODERICK | Director, President and CEO | Sale | 31,165 | $25.33 | $789409.45 |
| 2025-11-12 | DE, GREEF RODERICK | Director, President and CEO | Sale | 33,418 | $25.88 | $864857.84 |
| 2025-11-11 | DE, GREEF RODERICK | Director, President and CEO | Sale | 35,417 | $26.15 | $926154.55 |
| 2025-10-24 | GOSWAMI, JOYDEEP | Director | Sale | 1,666 | $28.99 | $48297.34 |
| 2025-10-22 | DE, GREEF RODERICK | Director, President and CEO | Sale | 37,795 | $27.30 | $1.03M |
| 2025-10-20 | WERNER, SEAN | Chief Technology Officer | Sale | 275 | $27.82 | $7650.50 |
| 2025-10-16 | GOSWAMI, JOYDEEP | Director | Sale | 1,334 | — | — |
| 2025-10-15 | CASDIN, PARTNERS MASTER FUND, L.P. | 10% Owner | Sale | 750,000 | $28.55 | $21.41M |
| 2025-10-09 | WICHTERMAN, TROY | Chief Financial Officer | Sale | 833 | $27.36 | $22790.88 |
| 2025-10-09 | MATHEW, ABY J. | EVP & Chief Scientific Officer | Sale | 509 | $27.36 | $13926.24 |
| 2025-10-09 | FOSTER, KAREN A. | Chief Quality and Operations | Sale | 419 | $27.36 | $11463.84 |
| 2025-10-09 | BERARD, TODD | Chief Marketing Officer | Sale | 289 | $27.36 | $7907.04 |
| 2025-10-09 | AEBERSOLD, SARAH | Chief Human Resources Officer | Sale | 188 | $27.36 | $5143.68 |
| 2025-09-15 | AEBERSOLD, SARAH | Chief Human Resources Officer | Sale | 714 | $25.61 | $18285.54 |
| 2025-09-11 | WICHTERMAN, TROY | Chief Financial Officer | Sale | 1,032 | $26.83 | $27688.56 |
| 2025-09-11 | WERNER, SEAN | Chief Technology Officer | Sale | 72 | $26.83 | $1931.76 |
| 2025-09-11 | MATHEW, ABY J. | EVP & Chief Scientific Officer | Sale | 630 | $26.83 | $16902.90 |
| 2025-09-11 | FOSTER, KAREN A. | Chief Quality and Operations | Sale | 511 | $26.83 | $13710.13 |
| 2025-09-11 | BERARD, TODD | Chief Marketing Officer | Sale | 358 | $26.83 | $9605.14 |
| 2025-09-11 | AEBERSOLD, SARAH | Chief Human Resources Officer | Sale | 233 | $26.83 | $6251.39 |
| 2025-08-26 | WICHTERMAN, TROY | Chief Financial Officer | Sale | 590 | $25.44 | $15009.60 |
| 2025-08-26 | WERNER, SEAN | Chief Technology Officer | Sale | 111 | $25.44 | $2823.84 |
| 2025-08-26 | MATHEW, ABY J. | EVP & Chief Scientific Officer | Sale | 531 | $25.44 | $13508.64 |
| 2025-08-26 | FOSTER, KAREN A. | Chief Quality and Operations | Sale | 413 | $25.44 | $10506.72 |
| 2025-08-26 | BERARD, TODD | Chief Marketing Officer | Sale | 354 | $25.44 | $9005.76 |
| 2025-08-26 | AEBERSOLD, SARAH | Chief Human Resources Officer | Sale | 219 | $25.44 | $5571.36 |
| 2025-08-25 | BERARD, TODD | Chief Marketing Officer | Sale | 10,000 | $25.53 | $255300.00 |
| 2025-08-15 | CASDIN, PARTNERS MASTER FUND, L.P. | 10% Owner | Sale | 500,000 | $24.40 | $12.20M |
| 2025-08-11 | CASDIN, PARTNERS MASTER FUND, L.P. | 10% Owner | Sale | 500,000 | $22.60 | $11.30M |
| 2025-07-18 | WERNER, SEAN | Chief Technology Officer | Sale | 1,115 | $21.22 | $23660.30 |
| 2025-07-07 | WICHTERMAN, TROY | Chief Financial Officer | Sale | 877 | $22.27 | $19530.79 |
| 2025-07-07 | MATHEW, ABY J. | EVP & Chief Scientific Officer | Sale | 536 | $22.27 | $11936.72 |
| 2025-07-07 | FOSTER, KAREN A. | Chief Quality and Operations | Sale | 400 | $22.27 | $8908.00 |
| 2025-07-07 | BERARD, TODD | Chief Marketing Officer | Sale | 304 | $22.27 | $6770.08 |
| 2025-07-07 | AEBERSOLD, SARAH | Chief Human Resources Officer | Sale | 198 | $22.27 | $4409.46 |
Frequently asked questions
Are BLFS insiders buying or selling?
Over the transactions on record, BLFS insiders have been net sellers, with about $57.94M in stock sold across 82 sales. The entries tagged as buys are stock grants and option exercises recorded at $0, not open-market purchases.
Does insider selling at BLFS mean the stock will fall?
Not by itself. Most executive selling is pre-scheduled through 10b5-1 plans filed months in advance, and insiders sell for diversification, taxes, and liquidity far more often than out of any view on the price. Insider buying is the stronger signal, especially when several insiders buy around the same time, because there is usually only one reason to put personal cash into the stock.
Which BLFS insiders are selling the most?
Recent selling is concentrated in a few names. CASDIN, PARTNERS MASTER FUND, L.P. accounts for the largest share on record, with about $44.91M sold. Selling by one or two individuals matters less than broad selling across the whole leadership team, which is the pattern worth watching.