Traders should view this as a positive signal, especially given participation by the CEO. Monitor for follow-on buying or commentary around upcoming earnings or operational updates.
Price Chart
Executive Summary
Two corporate insiders at Harvard Bioscience purchased shares in the open market within the past week, including CEO John D. Duke and Director Stephen J. Denelsky, signaling confidence in the company. The total value of purchases was $73,750, representing a modest but notable insider buying cluster.
Key Financial Metrics
Key Facts
- CEO John D. Duke purchased 5,000 shares at $5.01 per share for a total of $25,050.
- Director Stephen J. Denelsky purchased 10,000 shares at $4.87 per share for a total of $48,700.
- Total insider purchases in the past 7 days: $73,750 across two transactions.
- All transactions were open-market purchases (Form 4 codes: P), indicating direct cash investment.
- Cluster represents approximately 0.33% of the company's $22M market cap — modest but meaningful for a micro-cap.
Financial Impact
$73,750 in open-market purchases by insiders
Risk Factors
- Micro-cap stock with low liquidity; insider purchases may not reflect broader institutional interest.
- No accompanying fundamental update in this filing — sentiment is based solely on insider behavior.
Market Snapshot
Investment Themes
Documents Analyzed
This report is based on 1 SEC document filed with EDGAR.
| Document | Accession Number |
|---|---|
| CONTEXT: Insider Cluster Data (2 trades, 7d window) | cluster-HBIO-1773857614038 |
Track record builds as more directional reports settle.
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Sep 22, 2026 4w ago | SC 13G/A | $7.92 | awaiting T+60 | — | $8.32 (+5.05%) |
Aug 11, 2026 10w ago | 8-K | $6.13 | awaiting T+60 | — | $8.32 (+35.73%) |
Aug 11, 2026 10w ago | 8-K | $6.13 | awaiting T+60 | — | $8.32 (+35.73%) |
Jul 28, 2026 12w ago | Press Release | $5.92 | awaiting T+60 | — | $8.32 (+40.54%) |
Jun 2, 2026 20w ago | 8-K | $6.50 $7.90 | ▲ +21.54% | ▲ +19.04% | $8.32 (+28.00%) |
May 12, 2026 23w ago | 8-K | $5.41 $6.19 | ▲ +14.42% | ▲ +10.03% | $8.32 (+53.79%) |
May 12, 2026 23w ago | 8-K | $5.41 $6.19 | ▼ −14.42% | ▼ −10.03% | $8.32 (−53.79%) |
May 12, 2026 23w ago | Press Release | $5.41 $6.19 | ▲ +14.42% | ▲ +10.03% | $8.32 (+53.79%) |
Mar 16, 2026 32w ago | Insider Cluster | $5.01 $6.01 | ▲ +19.96% | ▲ +9.48% | $8.32 (+66.07%) |
Mar 16, 2026 32w ago | Insider Cluster | $5.01 $6.01 | ▲ +19.96% | ▲ +9.48% | $8.32 (+66.07%) |
US Market Status
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