BLFS BIOLIFE SOLUTIONS INC
FollowStock (common), issuer CIK 834365
Filings received so far for Q3 2026: 5 13F filers report a position in BLFS shares at 2026-09-30. The quarter is not complete: its 13F deadline is 2026-11-14, and the counts grow as filings arrive.
13D and 13G filers
No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.
Insider trades
| Owner | Date | Shares | Price | Filing |
|---|---|---|---|---|
| Wichterman Troyofficer (Chief Financial Officer) | 2026-10-06 | -256,000 D | Form 4 | |
| Wichterman Troyofficer (Chief Financial Officer) | 2026-10-06 | -95,933 F | $38.61 | Form 4 |
| Wichterman Troyofficer (Chief Financial Officer) | 2026-10-06 | +62,300 A | Form 4 | |
| Wichterman Troyofficer (Chief Financial Officer) | 2026-10-06 | +76,204 A | Form 4 | |
| GOSWAMI JOYDEEPdirector | 2026-10-06 | -53,156 D | Form 4 | |
| Ellingson Racheldirector | 2026-10-06 | -57,995 D | Form 4 | |
| DuRoss Amydirector | 2026-10-06 | -26,857 D | Form 4 | |
| Coste Catherinedirector | 2026-10-06 | -13,871 D | Form 4 | |
| DE GREEF RODERICKdirector, officer (Chief Executive Officer) | 2026-10-06 | -826,454 D | Form 4 | |
| DE GREEF RODERICKdirector, officer (Chief Executive Officer) | 2026-10-06 | -364,872 F | $38.61 | Form 4 |
| DE GREEF RODERICKdirector, officer (Chief Executive Officer) | 2026-10-06 | +237,460 A | Form 4 | |
| DE GREEF RODERICKdirector, officer (Chief Executive Officer) | 2026-10-06 | +225,670 A | Form 4 | |
| Hunt Anthonydirector | 2026-10-06 | -15,046 D | Form 4 | |
| MOORE TIMOTHY L.director | 2026-10-06 | -44,943 D | Form 4 | |
| Mathew Aby J.officer (EVP & Chief Scientific Officer) | 2026-10-06 | -404,608 D | Form 4 |
13F holders, Q3 2026
Filers in the available 13F reports with a share position at 2026-09-30, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.
| Holder | Shares | Value | % of portfolio | Change | Source |
|---|---|---|---|---|---|
| GAMMA Investing LLC | 9,647 | $375K | 0.01% | +651 | 13F-HRTimeline |
| Farther Finance Advisors, LLC | 841 | $32.7K | <0.01% | +59 | 13F-HRTimeline |
| Versant Capital Management, Inc | 498 | $19.3K | <0.01% | 0 | 13F-HRTimeline |
| GILPIN WEALTH MANAGEMENT, LLC | 11 | $428 | <0.01% | 0 | 13F-HRTimeline |
| Davis Capital Management | 2 | $78 | <0.01% | 0 | 13F-HRTimeline |
Events
Wichterman Troy disposed of 213,429 BLFS shares on 2026-10-06, Form 4 filed 2026-10-08. 0001193125-26-418329
Accepted , ingestedGOSWAMI JOYDEEP disposed of 53,156 BLFS shares on 2026-10-06, Form 4 filed 2026-10-08. 0001193125-26-418328
Accepted , ingestedEllingson Rachel disposed of 57,995 BLFS shares on 2026-10-06, Form 4 filed 2026-10-08. 0001193125-26-418327
Accepted , ingestedDuRoss Amy disposed of 26,857 BLFS shares on 2026-10-06, Form 4 filed 2026-10-08. 0001193125-26-418325
Accepted , ingestedCoste Catherine disposed of 13,871 BLFS shares on 2026-10-06, Form 4 filed 2026-10-08. 0001193125-26-418323
Accepted , ingestedDE GREEF RODERICK disposed of 728,196 BLFS shares on 2026-10-06, Form 4 filed 2026-10-08. 0001193125-26-418321
Accepted , ingestedHunt Anthony disposed of 15,046 BLFS shares on 2026-10-06, Form 4 filed 2026-10-08. 0001193125-26-418319
Accepted , ingestedMOORE TIMOTHY L. disposed of 44,943 BLFS shares on 2026-10-06, Form 4 filed 2026-10-08. 0001193125-26-418316
Accepted , ingestedMathew Aby J. disposed of 388,578 BLFS shares on 2026-10-06, Form 4 filed 2026-10-08. 0001193125-26-418315
Accepted , ingestedBerard Todd disposed of 162,566 BLFS shares on 2026-10-06, Form 4 filed 2026-10-08. 0001193125-26-418308
Accepted , ingestedWerner Sean disposed of 47,135 BLFS shares on 2026-10-06, Form 4 filed 2026-10-08. 0001193125-26-418304
Accepted , ingested