Amy DuRoss is Director at BIOLIFE SOLUTIONS INC (BLFS). They have made 5 open-market trades across 1 company since 2022, most recently 2026-02-24.
CIK 0001854968
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
0 open-market purchases, against 5 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| BLFS | 26,857 | $1.0M |
Shares reported on the most recent Form 4, priced at the 2026-02-26 close.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| BLFS | SELL | 2025-12-15 | 2025-12-17 | $24.60 | $49K | -2.0% | -2.9% | -22.9% |
| BLFS | SELL | 2025-11-25 | 2025-11-28 | $27.00 | $108K | -5.1% | -3.8% | -13.9% |
| BLFS | SELL | 2025-11-19 | 2025-11-21 | $24.65 | $259K | -2.7% | -4.0% | -12.5% |
| BLFS | SELL · 10b5-1 | 2025-03-14 | 2025-03-20 | $24.96 | $281K | -8.0% | -14.8% | -13.3% |
| BLFS | SELL | 2024-03-12 | 2024-03-13 | $16.90 | $293K | +7.7% | -5.5% | +22.6% |
| BLFS | SELL | 2022-11-15 | 2022-11-17 | $24.35 | $127K | -3.7% | -19.7% | +7.6% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.