Updated Jul 16, 2026 · Last SEC filing 2026-07-13
BIOLIFE SOLUTIONS INC (BLFS) has filed 12 SEC Form 4 insider transactions in the last 90 days, with the most recent on 2026-07-13. 2 Form 8-K material event filings were reported by BLFS in the last 90 days. 3 Form 144 notices of proposed sale were filed for BLFS stock. InsiderAlpha tracks every BLFS SEC filing — Form 4, Form 144, and 8-K — in real time, including Rule 10b5-1 plan detection.
| SIC classification | Electromedical & Electrotherapeutic Apparatus (SIC 3845) |
|---|---|
| SEC CIK | 0000834365 |
| Form 4 filings (90d) | 12 |
|---|---|
| Form 8-K filings (90d) | 2 |
| Form 144 notices (90d) | 3 |
| Latest Form 4 filing | 2026-07-13 |
| Date | Insider | Role | Transaction | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| Wichterman Troy | Chief Financial Officer | F — Tax withholding / forfeiture | 844 | $27.79 | $23K | SEC | |
| Mathew Aby J. | EVP & Chief Scientific Officer | F — Tax withholding / forfeiture | 516 | $27.79 | $14K | SEC | |
| Berard Todd | Chief Marketing Officer | F — Tax withholding / forfeiture | 293 | $27.79 | $8K | SEC | |
| DE GREEF RODERICK | President and CEO | F — Tax withholding / forfeiture | 2.8K | $26.04 | $72K | SEC | |
| Mathew Aby J. | EVP & Chief Scientific Officer | F — Tax withholding / forfeiture | 564 | $26.04 | $15K | SEC | |
| Berard Todd | Chief Marketing Officer | F — Tax withholding / forfeiture | 470 | $26.04 | $12K | SEC | |
| Wichterman Troy | Chief Financial Officer | F — Tax withholding / forfeiture | 937 | $26.04 | $24K | SEC | |
| Werner Sean | Chief Technology Officer | F — Tax withholding / forfeiture | 420 | $26.04 | $11K | SEC | |
| Mathew Aby J. | EVP & Chief Scientific Officer | F — Tax withholding / forfeiture | 627 | $26.10 | $16K | SEC | |
| Berard Todd | Chief Marketing Officer | F — Tax withholding / forfeiture | 356 | $26.10 | $9K | SEC | |
| Wichterman Troy | Chief Financial Officer | F — Tax withholding / forfeiture | 1.0K | $26.10 | $27K | SEC | |
| Casdin Partners Master Fund, L.P. | 10% Owner | S — Open-market sale | 650.0K | $23.70 | $15.40M | SEC | |
| Casdin Partners Master Fund, L.P. | 10% Owner | S — Open-market sale | 250.0K | $23.70 | $5.92M | SEC | |
| Casdin Partners Master Fund, L.P. | 10% Owner | S — Open-market sale | 300.0K | $22.65 | $6.79M | SEC | |
| Berard Todd | Chief Marketing Officer | F — Tax withholding / forfeiture | 293 | $19.27 | $6K | SEC |
All transactions sourced from SEC EDGAR Form 4 filings for BIOLIFE SOLUTIONS INC (BLFS). Updated in real time as new filings are submitted to the SEC.
| Insider | Form 4 filings | Total transaction value |
|---|---|---|
| Casdin Partners Master Fund, L.P. | 3 | $28.12M |
| Mathew Aby J. | 3 | $45K |
| Berard Todd | 3 | $30K |
| Wichterman Troy | 3 | $75K |
| Werner Sean | 1 | $11K |
Form 144 must be filed before insiders sell restricted or control stock above SEC thresholds. A cluster of Form 144 notices often precedes a wave of insider distribution.
SEC Form 4 transactions are reported with a one-letter code indicating the type of transaction. Common codes you'll see in BLFS insider filings:
| P | Open-market purchase by the insider |
|---|---|
| S | Open-market sale by the insider |
| A | Grant, award, or other acquisition from the issuer |
| M | Exercise or conversion of derivative security (e.g. options) |
| F | Payment of exercise price or tax liability via share withholding |
| G | Bona-fide gift of securities |
| D | Disposition to the issuer (e.g. share buyback participation) |
| J | Other acquisition or disposition |
| X | Exercise of in-the-money or at-the-money derivative security |
| C | Conversion of derivative security |
| V | Transaction voluntarily reported earlier than required |
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