HBIO HARVARD BIOSCIENCE INC

BULLISH Impact: 6/10 Insider Cluster (2 insiders)
Horizon days Filed Mar 16, 2026 Processed 2mo ago
Insider cluster: 2 insiders, $74K total
Final — all horizons settled through T+60d
HBIO ▲ +19.96% at T+60d
LONG call ✓ call won +19.96% · α vs SPY +9.48% · entry $5.01 → $6.01
Currently $6.08 · +21.36% from $5.01 entry
Entry anchored
Mar 13, 03:59 PM ET
via Databento tick
T+1d
-2.79%
call -2.79% · α -3.07%
$4.87
settled 3mo ago
T+5d
+6.59%
call +6.59% · α +8.63%
$5.34
settled 3mo ago
T+20d
-2.00%
call -2.00% · α -5.78%
$4.91
settled 2mo ago
T+60d
+19.96%
call +19.96% · α +9.48%
$6.01
settled 4d ago

Price Chart

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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

Direction
buying
Total Value
$73.8K
Insiders
2

Actionable Insight

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.

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

insider ownershipmarket sentiment

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

Exchange
Nasdaq

Documents Analyzed

This report is based on 1 SEC document filed with EDGAR.

DocumentAccession Number
CONTEXT: Insider Cluster Data (2 trades, 7d window)cluster-HBIO-1773857614038
8 reports for HBIO
Performance horizon

Track record builds as more directional reports settle.

Filters
Rows
Reports for HBIO — sortable, filterable
Type Now
Jun 2, 2026
10d ago
8-K
NEUTRAL ★ 3/10
$6.50 $6.48▼ −0.31%▼ −0.71%$6.08 (−6.46%)
May 12, 2026
4w ago
8-K
MIXED ★ 5/10
$5.41 $5.57▲ +2.96%▲ +2.38%$6.08 (+12.38%)
May 12, 2026
4w ago
8-K
BEARISH ★ 6/10
$5.41 $5.57▼ −2.96%▼ −2.38%$6.08 (−12.38%)
May 12, 2026
4w ago
Press Release
NEUTRAL ★ 4/10
$5.41 $5.57▲ +2.96%▲ +2.38%$6.08 (+12.38%)
Mar 16, 2026
12w ago
Insider Cluster
NEUTRAL ★ 3/10
$5.01 $4.87▼ −2.79%▼ −3.07%$6.08 (+21.36%)
Mar 16, 2026
12w ago
Insider Cluster
NEUTRAL ★ 3/10
$5.01 $4.87▼ −2.79%▼ −3.07%$6.08 (+21.36%)
Mar 16, 2026
12w ago
Insider Cluster
BULLISH ★ 6/10
$5.01 $4.87▼ −2.79%▼ −3.07%$6.08 (+21.36%)
Mar 12, 2026
13w ago
8-K / PRESS-RELEASE
MIXED ★ 6/10
$4.90 $4.70▼ −4.08%▼ −3.48%$6.08 (+24.08%)
Showing 8 of 8

US Market Status

Market Closed — Opens Mon (49h 1m)

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