Duke John D Insider Trades

Insider Trading History

Track insider trading activity for Duke John D. See latest buy and sell transactions across all companies.

Holdings

Company
Holding Value
Last Transaction
Sale/Purchase
Amount
Price
Current Price

Insider Trades History

Company
Holding Value
Last Transaction
Sale/Purchase
Amount
Price
Current Price
Harvard Bioscience
Harvard Bioscience HBIO
Chief Executive Officer
Holding Value $1.08M 180,000 shares
Last Trade
Mar 20, 2026 Purchase (Award)Shares received as a grant, bonus, or other company award rather than an open-market purchase.
$395k 75,000 shares
$5.27
$6.01
Harvard Bioscience
Harvard Bioscience HBIO
Chief Executive Officer
Holding Value $631k 105,000 shares
Last Trade
Mar 16, 2026 Purchase (Open Market)Shares bought on the open market or in a private purchase outside of a company compensation plan.
$25.1k 5,000 shares
$5.01
$6.01
Harvard Bioscience
Harvard Bioscience HBIO
Chief Executive Officer
Holding Value $6.01M 1,000,000 shares
Last Trade
Aug 08, 2025 Purchase (Award)Shares received as a grant, bonus, or other company award rather than an open-market purchase.
$264k 500,000 shares
$0.53
$6.01

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