Duke John D
SEC insider (Form 3/4/5 filer). CIK 0002071593. Chief Executive Officer at HARVARD BIOSCIENCE INC (HBIO). 4 reported Form 4/5 transactions since Sep 2024; latest on Mar 20, 2026. Located in HOLLISTON, MA.
Companies Duke John D has filed insider reports for
- HARVARD BIOSCIENCE INC (HBIO): Director, Officer, Chief Executive Officer
Duke John D
CIK: 0002071593
Transaction Breakdown
Open Market Buys (P)1 (25.0%)
High conviction signal
Open Market Sales (S)0 (0.0%)
Position reduction
Option Exercises (M)0 (0.0%)
Derivative conversions
Awards (A)3 (75.0%)
Compensation grants
Other (G, F, J, C, D, …)0 (0.0%)
Gifts, tax withholding, conversions, dispositions to the issuer and other codes
Companies & Roles (1)
HBIO
HARVARD BIOSCIENCE INC
DirectorOfficer
Discretionary Trading P&L
Holdings
Transaction History (4 total)
- Mar 20, 2026HBIO
HARVARD BIOSCIENCE INC
AwardDirect75K shares- - Mar 16, 2026HBIO
HARVARD BIOSCIENCE INC
PurchaseDirect5K shares at avg. $5.01$25K - Aug 8, 2025HBIO
HARVARD BIOSCIENCE INC
AwardDirect500K shares- - Aug 8, 2025HBIO
HARVARD BIOSCIENCE INC
AwardDirect500K shares-
1-4 of 4 transactions