The following table details the insider trading activities
(stock purchases, stock sales, and stock option exercises) of Duke John D since 2026.
This trader's CIK number is 2071593.
At the time of last reporting, Duke John D was the Chief Executive Officer of Harvard Bioscience Inc. (stock ticker symbol HBIO).
Also see all insider trading activities at Harvard Bioscience Inc.
| Insider Buying | Insider Sales | Option Exercises | |||||
|---|---|---|---|---|---|---|---|
| Year | Symbol | Shares | Value | Shares | Value | Shares | Value |
| 2026 | HBIO | 5,000 | $25,050 | 0 | $0 | 0 | $0 |
| Trade Date | Symbol | Trade Type | Shares | Price ($) | Value ($) |
|---|---|---|---|---|---|
| 2026-03-16 | HBIO | Buy | 5,000 | 5.01 | 25,050 |
Insider trading activities including stock purchases, stock sales, and option exercises listed in the above table cannot be completely guaranteed as to their accuracy. For more information regarding the trades made by Duke John D (Chief Executive Officer of Harvard Bioscience Inc at the time of this reporting) see the Securities and Exchange Commission (SEC) website.