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Insider Cluster (2 insiders) ·Filed Mar 16, 2026

HBIO

HARVARD BIOSCIENCE INC
NEUTRAL
Impact 3/10
Horizondays Processed7mo ago
Insider cluster: 2 insiders, $74K total
Actionable Insight • Neutral

Minor insider buying by a director adds slight positive sentiment, but CEO's grant is routine. Monitor for follow-up purchases or additional insider activity ahead of next earnings.

DirectionNeutral
Confidencehigh
Horizondays
Final — all horizons settled through T+60d
HBIO ▲ +19.96% at T+60d
NEUTRAL call +19.96% · α vs SPY +9.48% · entry $5.01 → $6.01
Entry = T+0 close
Mar 15, 2026
via day close
T+1d
-2.79%
call -2.79% · α -3.07%
$4.87
settled 8mo ago
T+5d
+6.59%
call +6.59% · α +8.63%
$5.34
settled 7mo ago
T+20d
-2.00%
call -2.00% · α -5.78%
$4.91
settled 7mo ago
T+60d
+19.96%
call +19.96% · α +9.48%
$6.01
settled 5mo ago

Price Chart

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Executive Summary

HBIO CEO received a non-cash grant of 75,000 shares, while a director made an open-market purchase of 10,000 shares for $48,700. The CEO's transaction is a routine award with no economic cost; the director's buying adds modest conviction.

Key Financial Metrics

Direction
buying
Total Value
$48.7K
Insiders
2

Key Facts

  • CEO Duke John D was granted 75,000 shares at $0 (non-cash event, no market impact)
  • Director Stephen J. Denelsky purchased 10,000 shares in the open market for $48,700
  • Total open-market buying: $48,700 (0.2% of $24M market cap)
  • No open-market selling or cash-related transactions

Financial Impact

$48,700 in open-market buying (0.2% of market cap), one non-cash grant

insider sentimentshare count (dilution potential)

Risk Factors

  • The CEO share grant may lead to future dilution if not part of a pre-approved plan
  • Small market cap makes HBIO vulnerable to volatility from low-volume trades

Market Snapshot

Exchange
Nasdaq

Investment Themes

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-1774273716700
12 reports for HBIO
Performance horizon

Track record builds as more directional reports settle.

Filters
Rows
Reports for HBIO — sortable, filterable
TypeNow
Sep 22, 2026
4w ago
SC 13G/A
NEUTRAL ★ 3/10
$7.92awaiting T+60—$8.32 (+5.05%)
Aug 11, 2026
10w ago
8-K
MIXED ★ 5/10
$6.13awaiting T+60—$8.32 (+35.73%)
Aug 11, 2026
10w ago
8-K
MIXED ★ 6/10
$6.13awaiting T+60—$8.32 (+35.73%)
Jul 28, 2026
12w ago
Press Release
NEUTRAL ★ 1/10
$5.92awaiting T+60—$8.32 (+40.54%)
Jun 2, 2026
20w ago
8-K
NEUTRAL ★ 3/10
$6.50 $7.90▲ +21.54%▲ +19.04%$8.32 (+28.00%)
May 12, 2026
23w ago
8-K
MIXED ★ 5/10
$5.41 $6.19▲ +14.42%▲ +10.03%$8.32 (+53.79%)
May 12, 2026
23w ago
8-K
BEARISH ★ 6/10
$5.41 $6.19▼ −14.42%▼ −10.03%$8.32 (−53.79%)
May 12, 2026
23w ago
Press Release
NEUTRAL ★ 4/10
$5.41 $6.19▲ +14.42%▲ +10.03%$8.32 (+53.79%)
Mar 16, 2026
32w ago
Insider Cluster
NEUTRAL ★ 3/10
$5.01 $6.01▲ +19.96%▲ +9.48%$8.32 (+66.07%)
Mar 16, 2026
32w ago
Insider Cluster
NEUTRAL ★ 3/10
$5.01 $6.01▲ +19.96%▲ +9.48%$8.32 (+66.07%)
Showing 10 of 12

US Market Status

Market Closed — Opens in 2h 39m

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Report published Mar 23, 2026