As of the latest Form 4 filed Jun 22, 2026.
What BioLife Solutions Inc insiders — officers, directors and 10% owners — have bought and sold in their own stock, straight from their SEC Form 4 filings. Values are shares × the reported transaction price where both are disclosed.
Buys plotted up, sells down; bar height is the disclosed dollar value (shares × reported price). Our Form 4 history is only complete from mid-2026, so early months are sparse — the series fills in as more filings land. Open-market purchases and sales only.
Newest filing first — the 57 most recent filings for BLFS.
| Filed | Trade date | Insider | Transaction | Shares | Price | Value | 10b5-1 | Filing |
|---|---|---|---|---|---|---|---|---|
| 2026-06-22 | 2026-06-18 | Berard Todd Chief Marketing Officer | FTax | −470.00 | $26.04 | $12.2K | No | Form 4 ↗ |
| 2026-06-22 | 2026-06-18 | Werner Sean Chief Technology Officer | FTax | −420.00 | $26.04 | $10.9K | No | Form 4 ↗ |
| 2026-06-22 | 2026-06-18 | DE GREEF RODERICK President and CEO | FTax | −2.77K | $26.04 | $72.3K | No | Form 4 ↗ |
| 2026-06-22 | 2026-06-18 | Wichterman Troy Chief Financial Officer | FTax | −937.00 | $26.04 | $24.4K | No | Form 4 ↗ |
| 2026-06-22 | 2026-06-18 | Mathew Aby J. EVP & Chief Scientific Officer | FTax | −564.00 | $26.04 | $14.7K | No | Form 4 ↗ |
| 2026-06-10 | 2026-06-08 | Wichterman Troy Chief Financial Officer | FTax | −1.03K | $26.10 | $26.8K | No | Form 4 ↗ |
| 2026-06-10 | 2026-06-08 | Berard Todd Chief Marketing Officer | FTax | −356.00 | $26.10 | $9.29K | No | Form 4 ↗ |
| 2026-06-10 | 2026-06-08 | Mathew Aby J. EVP & Chief Scientific Officer | FTax | −627.00 | $26.10 | $16.4K | No | Form 4 ↗ |
| 2026-05-21 | 2026-05-21 | Casdin Partners Master Fund, L.P. 10% owner | SSale | −650K | $23.70 | $15.4M | No | Form 4 ↗ |
| 2026-05-21 | 2026-05-20 | Casdin Partners Master Fund, L.P., 10% owner | SSale | −250K | $23.70 | $5.92M | No | Form 4 ↗ |
| 2026-05-21 | 2026-05-19 | Casdin Partners Master Fund, L.P., 10% owner | SSale | −300K | $22.65 | $6.79M | No | Form 4 ↗ |
| 2026-04-10 | 2026-04-08 | Mathew Aby J. EVP & Chief Scientific Officer | FTax | −515.00 | $19.27 | $9.92K | No | Form 4 ↗ |
| 2026-04-10 | 2026-04-08 | Berard Todd Chief Marketing Officer | FTax | −293.00 | $19.27 | $5.65K | No | Form 4 ↗ |
| 2026-04-10 | 2026-04-08 | Wichterman Troy Chief Financial Officer | FTax | −844.00 | $19.27 | $16.3K | No | Form 4 ↗ |
| 2026-03-31 | 2026-03-23 | Foster Karen A. Chief Quality and Operations | SSale | −2.58K | $19.17 | $49.4K | Yes (planned) | Form 4 ↗ |
| 2026-03-23 | 2026-03-19 | DE GREEF RODERICK President and CEO | FTax | −11.1K | $19.12 | $212K | No | Form 4 ↗ |
| 2026-03-23 | 2026-03-19 | Berard Todd Chief Marketing Officer | FTax | −1.88K | $19.12 | $35.9K | No | Form 4 ↗ |
| 2026-03-23 | 2026-03-19 | Werner Sean Chief Technology Officer | FTax | −1.68K | $19.12 | $32.1K | No | Form 4 ↗ |
| 2026-03-23 | 2026-03-19 | Wichterman Troy Chief Financial Officer | FTax | −3.75K | $19.12 | $71.7K | No | Form 4 ↗ |
| 2026-03-23 | 2026-03-19 | Aebersold Sarah Chief Human Resources Officer | FTax | −931.00 | $19.12 | $17.8K | No | Form 4 ↗ |
| 2026-03-23 | 2026-03-19 | Foster Karen A. Chief Quality and Operations | FTax | −1.91K | $19.12 | $36.5K | No | Form 4 ↗ |
| 2026-03-23 | 2026-03-19 | Mathew Aby J. EVP & Chief Scientific Officer | FTax | −2.25K | $19.12 | $43.1K | No | Form 4 ↗ |
| 2026-03-09 | 2026-03-09 | Foster Karen A. Chief Quality and Operations | SSale | −500.00 | $20.00 | $10.0K | No | Form 4 ↗ |
| 2026-03-09 | 2026-03-05 | Foster Karen A., Chief Quality and Operations | SSale | −96.9K | $20.15 | $1.95M | No | Form 4 ↗ |
| 2026-03-05 | 2026-03-03 | Werner Sean Chief Technology Officer | SSale | −111.00 | $20.74 | $2.30K | Yes (planned) | Form 4 ↗ |
| 2026-03-05 | 2026-03-03 | Foster Karen A. Chief Quality and Operations | SSale | −418.00 | $20.74 | $8.67K | Yes (planned) | Form 4 ↗ |
| 2026-03-05 | 2026-03-03 | Mathew Aby J. EVP & Chief Scientific Officer | SSale | −529.00 | $20.74 | $11.0K | Yes (planned) | Form 4 ↗ |
| 2026-03-05 | 2026-03-03 | Wichterman Troy Chief Financial Officer | SSale | −588.00 | $20.74 | $12.2K | Yes (planned) | Form 4 ↗ |
| 2026-03-05 | 2026-03-03 | Aebersold Sarah Chief Human Resources Officer | SSale | −219.00 | $20.74 | $4.54K | Yes (planned) | Form 4 ↗ |
| 2026-03-05 | 2026-03-03 | Berard Todd Chief Marketing Officer | SSale | −353.00 | $20.74 | $7.32K | Yes (planned) | Form 4 ↗ |
| 2026-02-26 | 2026-02-24 | Berard Todd Chief Marketing Officer | FTax | −8.85K | $22.65 | $200K | No | Form 4 ↗ |
| 2026-02-26 | 2026-02-24 | Berard Todd, Chief Marketing Officer | AAward | +22.5K | — | — | No | Form 4 ↗ |
| 2026-02-26 | 2026-02-24 | Berard Todd, Chief Marketing Officer | AAward | +20.1K | — | — | No | Form 4 ↗ |
| 2026-02-26 | 2026-02-24 | DuRoss Amy Director | AAward | +8.17K | — | — | No | Form 4 ↗ |
| 2026-02-26 | 2026-02-24 | Wichterman Troy Chief Financial Officer | FTax | −25.5K | $22.65 | $578K | No | Form 4 ↗ |
| 2026-02-26 | 2026-02-24 | Wichterman Troy, Chief Financial Officer | AAward | +64.9K | — | — | No | Form 4 ↗ |
| 2026-02-26 | 2026-02-24 | Wichterman Troy, Chief Financial Officer | AAward | +31.1K | — | — | No | Form 4 ↗ |
| 2026-02-26 | 2026-02-24 | Hunt Anthony Director | AAward | +8.17K | — | — | No | Form 4 ↗ |
| 2026-02-26 | 2026-02-24 | Coste Catherine Director | AAward | +8.17K | — | — | No | Form 4 ↗ |
| 2026-02-26 | 2026-02-24 | Ellingson Rachel Director | AAward | +8.17K | — | — | No | Form 4 ↗ |
| 2026-02-26 | 2026-02-24 | DE GREEF RODERICK President and CEO | FTax | −86.2K | $22.65 | $1.95M | No | Form 4 ↗ |
| 2026-02-26 | 2026-02-24 | DE GREEF RODERICK, President and CEO | AAward | +219K | — | — | No | Form 4 ↗ |
| 2026-02-26 | 2026-02-24 | DE GREEF RODERICK, President and CEO | FTax | −67.0K | $22.65 | $1.52M | No | Form 4 ↗ |
| 2026-02-26 | 2026-02-24 | DE GREEF RODERICK, President and CEO | AAward | +170K | — | — | No | Form 4 ↗ |
| 2026-02-26 | 2026-02-24 | DE GREEF RODERICK, President and CEO | AAward | +119K | — | — | No | Form 4 ↗ |
| 2026-02-26 | 2026-02-24 | Mathew Aby J. EVP & Chief Scientific Officer | FTax | −15.6K | $22.65 | $353K | No | Form 4 ↗ |
| 2026-02-26 | 2026-02-24 | Mathew Aby J., EVP & Chief Scientific Officer | AAward | +39.6K | — | — | No | Form 4 ↗ |
| 2026-02-26 | 2026-02-24 | Mathew Aby J., EVP & Chief Scientific Officer | AAward | +20.1K | — | — | No | Form 4 ↗ |
| 2026-02-26 | 2026-02-24 | Aebersold Sarah Chief Human Resources Officer | FTax | −5.73K | $22.65 | $130K | No | Form 4 ↗ |
| 2026-02-26 | 2026-02-24 | Aebersold Sarah, Chief Human Resources Officer | AAward | +23.5K | — | — | No | Form 4 ↗ |
| 2026-02-26 | 2026-02-24 | Werner Sean Chief Technology Officer | AAward | +24.1K | — | — | No | Form 4 ↗ |
| 2026-02-26 | 2026-02-24 | MOORE TIMOTHY L. Director | AAward | +8.17K | — | — | No | Form 4 ↗ |
| 2026-02-26 | 2026-02-24 | Foster Karen A. Chief Quality and Operations | FTax | −13.0K | $22.65 | $295K | No | Form 4 ↗ |
| 2026-02-26 | 2026-02-24 | Foster Karen A., Chief Quality and Operations | AAward | +32.1K | — | — | No | Form 4 ↗ |
| 2026-02-26 | 2026-02-24 | GOSWAMI JOYDEEP Director | AAward | +8.17K | — | — | No | Form 4 ↗ |
| 2024-05-02 | 2024-04-30 | Casdin Partners Master Fund, L.P. 10% owner | JOther | −150K | $17.54 | $2.63M | No | Form 4 ↗ |
| 2024-05-02 | 2024-04-30 | Casdin Partners Master Fund, L.P., 10% owner | JOther | +150K | $17.54 | $2.63M | No | Form 4 ↗ |
Insiders — a company’s officers, directors and holders of more than 10% of its stock — must report any trade in that stock to the SEC on a Form 4 within two business days. Each row here is one transaction from those filings.
The transaction code tells you what happened: Purchase (P) and Sale (S) are open-market trades — the ones markets watch most; Award (A) is a granted stock or unit, Option exercise (M) converts options into shares, and Gift (G) is a transfer for no consideration. Awards, exercises and gifts are largely compensation or administrative, not a directional bet.
One caveat on sales: many are made under a Rule 10b5-1 plan scheduled months in advance, so a sale is not automatically a bearish signal. Insider activity is a noisy input — read it alongside the filings, not on its own.
See also BLFS’s full analysis or the market-wide insider trading feed. The tabs above jump to BLFS’s other SEC data.
Source: SEC Form 4 filings for BLFS, parsed from EDGAR. Transaction prices are as reported in the filing — SEC public-domain data, not market quotes. Values are shares × reported price where both are disclosed; grants and gifts often carry no price. A delayed record of what insiders reported, not a live position or a recommendation.
Research and education only — not financial advice. TENKis not a registered investment adviser or broker-dealer and gives no personalized advice. Every call is impersonal — identical for all users, generated on a schedule from SEC filings plus a delayed/third-party price feed — may be wrong or out of date, and is not a recommendation to buy or sell any security. The operator and an affiliated trading operation may hold or trade the securities TENK rates; see Disclosures. Past performance does not guarantee future results. Do your own research.