HARVARD BIOSCIENCE (HBIO) stock: insider trades, news & valuation
Strong buyingShare price and insider trades
HARVARD BIOSCIENCE insider trading at a glance (Oct 9, 2026): in the past 12 months, 4 insiders bought $202K and 0 sold $0 of HBIO stock on the open market, including a cluster buy that began Mar 16, 2026.
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HBIO 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 | — | 0 |
| Q1 2026 | $202K | 5 | — | 0 |
Valuation, profit and volume
Summary
Over the past 12 months, 4 HARVARD BIOSCIENCE INC insiders reported open-market purchases totaling $202K, while 0 insiders reported sales totaling $0. The most recent cluster buy began on Mar 16, 2026, when 4 insiders bought a combined $202K.
Insider transactions
Open-market purchases and sales.
| Filed | Insider | Type | Shares | Price | Value | Since | Score |
|---|---|---|---|---|---|---|---|
| Apr 1SEC | Mark T FrostCFO | Buy | 5,00017,500 held (+40%) | $5.00 | $25K | +64.8% | — |
| Mar 18SEC | William SniderDirector | Buy | 12,52523,525 held (+114%) | $4.99 | $62K | +65.1% | — |
| Mar 18SEC | Stephen J DenelskyDirector | Buy | 10,00021,000 held (+91%) | $4.87 | $49K | +69.2% | — |
| Mar 18SEC | William SniderDirector | Buy | 8,47532,000 held (+36%) | $4.85 | $41K | +69.9% | — |
| Mar 17SEC | John D DukeCEO | Buy | 5,000105,000 held (+5%) | $5.01 | $25K | +64.5% | — |
Insiders at HARVARD BIOSCIENCE INC
| Insider | Bought | Sold | Last filing | Score |
|---|---|---|---|---|
| William SniderDirector | $104K | — | Mar 18, 2026 | — |
| Stephen J DenelskyDirector | $49K | — | Mar 18, 2026 | — |
| John D DukeCEO | $25K | — | Mar 17, 2026 | — |
| Mark T FrostCFO | $25K | — | Apr 1, 2026 | — |
HBIO stock: common questions
Are HARVARD BIOSCIENCE INC insiders buying HBIO stock?
In the past 12 months, 4 insiders reported open-market purchases of HBIO worth $202K. The latest was CFO Mark T Frost bought $25K of HBIO at $5.00 — first open-market purchase in our records; raises the stake by 40%.
Are HARVARD BIOSCIENCE INC insiders selling HBIO stock?
0 insiders reported sales worth $0 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 HBIO's 52-week range?
Over the past year HBIO has traded between $3.80 and $8.56. It last closed at $8.24 on Oct 9, 2026.