BLFS
−$26.8K
1,026 sh @ $26
BLFS
BIOLIFE SOLUTIONS INC
SEC CIK 834365
$26.10
+15.1% · 90 days
90-day buys
$0
0 open-market
90-day sells
$28.17M
4 open-market
Net insider flow
−$28.17M
Net selling
Filings shown
32
Most recent
At a glance
Over the last 90 days, insiders at BLFS have sold a net $28.17M of stock (0 open-market buys vs 4 sells).
Largest recent trade: Casdin Partners Master Fund, L.p. sold $15.41M of BLFS, trimming their stake 12%.
Most active filer: Wichterman Troy, with 7 transactions among the recent filings shown.
Insider transaction history
Form 4 filings for BLFS, newest firstBLFS
−$9.3K
356 sh @ $26
BLFS
−$16.4K
627 sh @ $26
BLFS
Casdin Partners Master Fund, L.p. sold $15.41M of BLFS, trimming their stake 12%.
−$15.41M
650,000 sh @ $24
BLFS
Casdin Partners Master Fund, L.p. sold $5.93M of BLFS, trimming their stake 4%.
−$5.93M
250,000 sh @ $24
BLFS
Casdin Partners Master Fund, L.p. sold $6.8M of BLFS, trimming their stake 5%.
−$6.8M
300,000 sh @ $23
BLFS
−$9.9K
515 sh @ $19
BLFS
−$5.6K
293 sh @ $19
BLFS
−$16.3K
844 sh @ $19
BLFS
−$49.4K
2,577 sh @ $19
BLFS
−$212.3K
11,101 sh @ $19
BLFS
−$35.9K
1,879 sh @ $19
BLFS
−$32.1K
1,681 sh @ $19
BLFS
−$71.7K
3,749 sh @ $19
BLFS
−$17.8K
931 sh @ $19
BLFS
−$36.5K
1,907 sh @ $19
BLFS
−$43.1K
2,255 sh @ $19
BLFS
−$10K
500 sh @ $20
BLFS
−$1.95M
96,923 sh @ $20
BLFS
−$2.3K
111 sh @ $21
BLFS
−$8.7K
418 sh @ $21
BLFS
−$11K
529 sh @ $21
BLFS
−$12.2K
588 sh @ $21
BLFS
−$4.5K
219 sh @ $21
BLFS
−$7.3K
353 sh @ $21
BLFS
+$0
20,096 sh
BLFS
+$0
22,479 sh
BLFS
−$200.4K
8,846 sh @ $23
BLFS
+$0
8,170 sh
BLFS
+$0
31,150 sh
BLFS
+$0
64,866 sh
BLFS
−$578.1K
25,525 sh @ $23
About BLFS insider activity
This page tracks every recent Form 4 filed for BIOLIFE SOLUTIONS INC with the U.S. Securities and Exchange Commission. Form 4 is the disclosure that company insiders — officers, directors, and holders of more than 10% of the stock — must file within two business days of buying or selling shares.
The summary above nets open-market purchases against open-market sales over the trailing 90 days. Open-market trades (codes P and S) tend to carry the most signal because they reflect a deliberate choice to put money in or take it out, as opposed to routine grants, option exercises, or tax-withholding events. Use the badges on each row to tell them apart, and always confirm details against the original filing before drawing conclusions.
Frequently asked questions
How often is BLFS insider data updated?
Continuously. We read from SEC EDGAR, so new Form 4 filings for BIOLIFE SOLUTIONS INC usually appear here within minutes of being accepted by the SEC.
What does "net insider flow" mean?
It is the total dollar value of open-market insider purchases minus open-market sales over the last 90 days. A positive number (green) means insiders bought more than they sold; a negative number (red) means the reverse.
Why do some rows show grants or option exercises instead of buys?
Insiders receive stock through compensation as well as buying it outright. Form 4 captures all of these. We label each transaction by its SEC code so you can focus on open-market activity if you prefer.
Is this investment advice?
No. InsiderSource presents public filing data for informational purposes only. Insider activity is one of many factors to consider and is never a recommendation to buy or sell.