HARVARD BIOSCIENCE INC (HBIO) insider buying and selling
There were no open-market insider purchases or sales at HARVARD BIOSCIENCE INC (HBIO) in the last 90 days. Over the last 12 months, 4 insiders bought $202K of the stock, led by William Snider (Director), who bought $104K between Mar 16–17, 2026.
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Trades by the same insider within a week are shown as one line.
| Date | Insider | Type | Shares | Price | Value |
|---|---|---|---|---|---|
| William Snider Director | Open market purchase 2 trades | 21,000 | avg. $4.93 | $104K | |
| STEPHEN J DENELSKY Director | Open market purchase | 10,000 | $4.87 | $49K | |
| John D Duke CEO | Open market purchase | 5,000 | $5.01 | $25K | |
| Mark T Frost CFO | Open market purchase | 5,000 | $5.00 | $25K |
What the HBIO insider trades really mean
The table above is the public summary. With an Insider Intel account you get the analysis behind it, for HARVARD BIOSCIENCE INC and every other stock we track:
HBIO's AI Signal score
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Questions about HBIO insider trading
Who bought HARVARD BIOSCIENCE INC (HBIO) stock recently?
Insiders who bought HARVARD BIOSCIENCE INC stock on the open market in the last 12 months: William Snider ($104K), STEPHEN J DENELSKY ($49K), John D Duke ($25K), Mark T Frost ($25K). The most recent purchase was reported on Mar 17, 2026.
Are insiders buying or selling HBIO?
Over the last 12 months insiders were net buyers of HBIO on discretionary trades: $202K bought against $0 sold (scheduled and tax-related sales excluded).
What is a sell-to-cover or 10b5-1 sale?
A 10b5-1 sale is scheduled in advance under a pre-arranged plan, and a sell-to-cover sale is made to pay tax on vesting shares. Neither is a fresh decision to sell, so they say less about an insider's view than a discretionary sale.
Where does this data come from?
Officers, directors and large shareholders report their trades to the SEC on Form 4. This page lists the open-market purchases and sales by individual insiders from those public filings; funds and other institutions are not shown.
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How to read this page
Officers, directors and large shareholders must report their trades in company shares to the SEC on Form 4. This page lists open-market purchases and sales by individual insiders: trades made on the stock exchange at the going price. Funds and other institutions are not shown here.
Information from SEC EDGAR Form 4 filings, shown for general information only. It is not financial advice and does not recommend buying or selling any security. Trades are shown by transaction date and may be reported up to two business days later.