BIOLIFE SOLUTIONS (BLFS) stock: insider trades, news & valuation
Heavy selling
Close · Oct 7, 2026
$38.61
— on the day
+0.0% over 12 months
52-week range $38.61 – $38.61
Share price and insider trades
BLFS closeInsider buyInsider sale
Price history unavailable.
Bought, 12 months$0
Sold, 12 months$56.6M
Insiders buying0
Insiders selling11
BIOLIFE SOLUTIONS insider trading at a glance (Oct 9, 2026): in the past 12 months, 0 insiders bought $0 and 11 sold $56.6M of BLFS stock on the open market.
Get emailed when insiders cluster-buy stocks like BLFS
Free alerts the day a new cluster buy is filed, plus the Monday report of the week's biggest insider trades.
Free · unsubscribe anytime · not investment advice · see a sample issue
BLFS insider buying and selling by quarter
Open-market purchases (green, above the line) and sales (red, below), by trade date.
| Quarter | Bought | Purchases | Sold | Sales |
|---|---|---|---|---|
| Q4 2026 | — | 0 | — | 0 |
| Q3 2026 | — | 0 | — | 0 |
| Q2 2026 | — | 0 | $28.1M | 3 |
| Q1 2026 | — | 0 | $2.1M | 14 |
| Q4 2025 | — | 0 | $26.4M | 31 |
Valuation, profit and volume
P/E (trailing)n/aSector median —
Market value—
Profit margin—Revenue growth —
Volume vs. 50-day—Last 5 sessions
Insiders' paper profit—On all tracked purchases —
Summary
Over the past 12 months, 0 BIOLIFE SOLUTIONS INC insiders reported open-market purchases totaling $0, while 11 insiders reported sales totaling $56.6M. Among insiders with enough purchase history to measure, Casdin Partners Master Fund, L.P. (10% Owner) has the highest Insider Score at 87. 33 of 49 recorded sales were made under pre-scheduled Rule 10b5-1 trading plans, which are usually less informative than discretionary sales.
Insider transactions
Open-market purchases and sales.
| Filed | Insider | Type | Shares | Price | Value | Since | Score |
|---|---|---|---|---|---|---|---|
| May 21SEC | Casdin Partners Master Fund, L.P.10% Owner | Sell | 650,0004,757,165 held (−12%) | $23.70 | $15.4M | — | 87 |
| May 21SEC | Casdin Partners Master Fund, L.P.10% Owner | Sell | 300,0005,657,165 held (−5%) | $22.65 | $6.8M | — | 87 |
| May 21SEC | Casdin Partners Master Fund, L.P.10% Owner | Sell | 250,0005,407,165 held (−4%) | $23.70 | $5.9M | — | 87 |
| Mar 31SEC | Karen A. FosterChief Quality And Operations | Sell Plan | 2,577108,758 held (−2%) | $19.17 | $49K | — | — |
| Mar 9SEC | Karen A. FosterChief Quality And Operations | Sell | 96,923113,742 held (−46%) | $20.15 | $2.0M | — | — |
| Mar 9SEC | Karen A. FosterChief Quality And Operations | Sell | 500113,242 held (−0%) | $20.00 | $10K | — | — |
| Mar 5SEC | Troy WichtermanCFO | Sell Plan | 588220,649 held (−0%) | $20.74 | $12K | — | — |
| Mar 5SEC | Aby J. MathewEvp & Chief Scientific Officer | Sell Plan | 529392,937 held (−0%) | $20.74 | $11K | — | — |
| Mar 5SEC | Karen A. FosterChief Quality And Operations | Sell Plan | 418210,665 held (−0%) | $20.74 | $9K | — | — |
| Mar 5SEC | Todd BerardChief Marketing Officer | Sell Plan | 353165,940 held (−0%) | $20.74 | $7K | — | — |
| Mar 5SEC | Sarah AebersoldChief Human Resources Officer | Sell Plan | 21993,360 held (−0%) | $20.74 | $5K | — | — |
| Mar 5SEC | Sean WernerCTO | Sell Plan | 11149,932 held (−0%) | $20.74 | $2K | — | — |
| Jan 8SEC | Troy WichtermanCFO | Sell Plan | 990150,746 held (−1%) | $25.59 | $25K | — | — |
| Jan 8SEC | Aby J. MathewEvp & Chief Scientific Officer | Sell Plan | 405349,350 held (−0%) | $25.59 | $10K | — | — |
| Jan 8SEC | Todd BerardChief Marketing Officer | Sell Plan | 344132,564 held (−0%) | $25.59 | $9K | — | — |
| Jan 8SEC | Karen A. FosterChief Quality And Operations | Sell Plan | 335191,984 held (−0%) | $25.59 | $9K | — | — |
| Jan 8SEC | Sarah AebersoldChief Human Resources Officer | Sell Plan | 24175,765 held (−0%) | $25.59 | $6K | — | — |
| Dec 17SEC | Amy DurossDirector | Sell | 2,00018,687 held (−10%) | $24.60 | $49K | — | — |
| Dec 17SEC | Troy WichtermanCFO | Sell Plan | 1,033151,736 held (−1%) | $25.13 | $26K | — | — |
| Dec 17SEC | Sarah AebersoldChief Human Resources Officer | Sell Plan | 71376,006 held (−1%) | $24.46 | $17K | — | — |
| Dec 17SEC | Aby J. MathewEvp & Chief Scientific Officer | Sell Plan | 631349,755 held (−0%) | $25.13 | $16K | — | — |
| Dec 17SEC | Karen A. FosterChief Quality And Operations | Sell Plan | 519192,319 held (−0%) | $25.13 | $13K | — | — |
| Dec 17SEC | Todd BerardChief Marketing Officer | Sell Plan | 358132,908 held (−0%) | $25.13 | $9K | — | — |
| Dec 17SEC | Sarah AebersoldChief Human Resources Officer | Sell Plan | 23376,719 held (−0%) | $25.13 | $6K | — | — |
| Dec 5SEC | Troy WichtermanCFO | Sell | 30,000152,769 held (−16%) | $25.72 | $772K | — | — |
| Nov 28SEC | Amy DurossDirector | Sell | 2,00022,687 held (−8%) | $27.00 | $54K | — | — |
| Nov 28SEC | Amy DurossDirector | Sell | 2,00020,687 held (−9%) | $27.00 | $54K | — | — |
| Nov 28SEC | Troy WichtermanCFO | Sell Plan | 584182,769 held (−0%) | $26.74 | $16K | — | — |
| Nov 28SEC | Aby J. MathewEvp & Chief Scientific Officer | Sell Plan | 526350,386 held (−0%) | $26.74 | $14K | — | — |
| Nov 28SEC | Karen A. FosterChief Quality And Operations | Sell Plan | 415192,838 held (−0%) | $26.74 | $11K | — | — |
| Nov 28SEC | Todd BerardChief Marketing Officer | Sell Plan | 351133,266 held (−0%) | $26.74 | $9K | — | — |
| Nov 28SEC | Sarah AebersoldChief Human Resources Officer | Sell Plan | 21776,952 held (−0%) | $26.74 | $6K | — | — |
| Nov 28SEC | Sean WernerCTO | Sell Plan | 11025,927 held (−0%) | $26.74 | $3K | — | — |
| Nov 21SEC | Amy DurossDirector | Sell | 4,52325,687 held (−15%) | $24.51 | $111K | — | — |
| Nov 21SEC | Amy DurossDirector | Sell | 1,00024,687 held (−4%) | $26.00 | $26K | — | — |
| Nov 21SEC | Amy DurossDirector | Sell | 47730,210 held (−2%) | $24.50 | $12K | — | — |
| Nov 13SEC | Greef Roderick DeCEO, President | Sell | 35,417454,581 held (−7%) | $26.15 | $926K | — | — |
| Nov 13SEC | Greef Roderick DeCEO, President | Sell | 33,418421,163 held (−7%) | $25.88 | $865K | — | — |
| Nov 13SEC | Greef Roderick DeCEO, President | Sell | 31,165389,998 held (−7%) | $25.33 | $789K | — | — |
| Oct 28SEC | Joydeep GoswamiDirector | Sell Plan | 1,66644,986 held (−4%) | $28.99 | $48K | — | — |
| Oct 24SEC | Greef Roderick DeCEO, President | Sell Plan | 37,795489,998 held (−7%) | $27.30 | $1.0M | — | — |
| Oct 22SEC | Sean WernerCTO | Sell Plan | 27526,037 held (−1%) | $27.82 | $8K | — | — |
| Oct 20SEC | Joydeep GoswamiDirector | Sell Plan | 1,33446,652 held (−3%) | — | $0 | — | — |
| Oct 17SEC | Casdin Partners Gp, Llc10% Owner | Sell | 750,0005,957,165 held (−11%) | $28.55 | $21.4M | — | 36 |
| Oct 14SEC | Troy WichtermanCFO | Sell Plan | 833183,353 held (−0%) | $27.36 | $23K | — | — |
| Oct 14SEC | Aby J. MathewEvp & Chief Scientific Officer | Sell Plan | 509350,912 held (−0%) | $27.36 | $14K | — | — |
| Oct 14SEC | Karen A. FosterChief Quality And Operations | Sell Plan | 419193,253 held (−0%) | $27.36 | $11K | — | — |
| Oct 14SEC | Todd BerardChief Marketing Officer | Sell Plan | 289133,617 held (−0%) | $27.36 | $8K | — | — |
| Oct 14SEC | Sarah AebersoldChief Human Resources Officer | Sell Plan | 18877,169 held (−0%) | $27.36 | $5K | — | — |
Insiders at BIOLIFE SOLUTIONS INC
| Insider | Bought | Sold | Last filing | Score |
|---|---|---|---|---|
| Casdin Partners Master Fund, L.P.10% Owner | — | $28.1M | May 21, 2026 | 87 |
| Casdin Partners Gp, Llc10% Owner | — | $21.4M | Oct 17, 2025 | 36 |
| Greef Roderick DeCEO, President | — | $3.6M | Nov 13, 2025 | — |
| Karen A. FosterChief Quality And Operations | — | $2.1M | Mar 31, 2026 | — |
| Troy WichtermanCFO | — | $873K | Mar 5, 2026 | — |
| Amy DurossDirector | — | $306K | Dec 17, 2025 | — |
| Aby J. MathewEvp & Chief Scientific Officer | — | $65K | Mar 5, 2026 | — |
| Joydeep GoswamiDirector | — | $48K | Oct 28, 2025 | — |
| Sarah AebersoldChief Human Resources Officer | — | $45K | Mar 5, 2026 | — |
| Todd BerardChief Marketing Officer | — | $42K | Mar 5, 2026 | — |
| Sean WernerCTO | — | $13K | Mar 5, 2026 | — |
BLFS stock: common questions
Are BIOLIFE SOLUTIONS INC insiders buying BLFS stock?
In the past 12 months, 0 insiders reported open-market purchases of BLFS worth $0.
Are BIOLIFE SOLUTIONS INC insiders selling BLFS stock?
11 insiders reported sales worth $56.6M over the same period.
Where does this data come from?
Every transaction comes from Form 4 filings that insiders must submit to the SEC within two business days of a trade. We pull them from SEC EDGAR every night.
What is BLFS's 52-week range?
Over the past year BLFS has traded between $38.61 and $38.61. It last closed at $38.61 on Oct 7, 2026.