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HBIO insider trading

HARVARD BIOSCIENCE INC — open-market insider buys and $1M+ sells from SEC Forms 3, 4 and 5.
Insider buys · 24 mo
4
Bought · 24 mo
$202k
Buys · last 90 days
0 · $0
Most recent buy
2026-04-01

Cluster buy detected

4 insiders bought HBIO within a short window (2026-03-16→2026-03-17), $202k in total — cluster score 70/100. Members see the buyers, the score breakdown and the chart.

See the cluster

Recent insider filings

FiledInsiderTypeSharesPriceValue
2026-04-01Frost Mark Tcluster
Chief Financial Officer
Bought5,000$5.00$25k
2026-03-18Snider Williamcluster
Director
Bought21,000$4.93$104k
2026-03-18DENELSKY STEPHEN Jcluster
Director
Bought10,000$4.87$49k
2026-03-17Duke John Dcluster
Chief Executive Officer
Bought5,000$5.01$25k

Most active insider buyers

InsiderRoleBuysTotal bought
Snider WilliamDirector1$104k
DENELSKY STEPHEN JDirector1$49k
Duke John DChief Executive Officer1$25k
Frost Mark TChief Financial Officer1$25k

See HBIO on the chart

Every insider buy and sell for HBIO plotted on the price, the full two-year history, cluster scores and daily updates — in the members area, $29/month. A free quarterly sample of the whole dataset needs no account.

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Data from the SEC EDGAR ownership filings, refreshed daily. Only open-market purchases (transaction code P) and sales of $1M or more are shown; grants, option exercises and tax withholding are excluded because they run on schedules set years earlier. Not investment advice.