| $350M | ||
| $217M | ||
| $172M | ||
| $109M | ||
| $107M | ||
| $104M |
Buys | $202,354 | 5 | 100 |
Sells | $0 | 0 | 0 |
| Snider William | director | 2 | $103,604 | 0 | $0 | $103,604 |
| DENELSKY STEPHEN J | director | 1 | $48,700 | 0 | $0 | $48,700 |
| Duke John D | Chief Executive Officer | 1 | $25,050 | 0 | $0 | $25,050 |
| Frost Mark T | Chief Financial Officer | 1 | $25,000 | 0 | $0 | $25,000 |
Harvard Bioscience, Inc. develops, manufactures, and sells technologies, products, and services for life science applications in the Americas, Europe, the Middle East, Africa, Asia, and internationally. The company offers cellular and molecular technology products, such as syringe and peristaltic infusion pump products; electroporation and electrofusion instruments, amino acid analyzers, spectrophotometers, and other equipment for molecular level testing and research; and precision scientific measuring instrumentation and equipment, including …
Over the last 12 months, insiders at Harvard Bioscience, Inc. have bought $202,354 and sold $0 worth of Harvard Bioscience, Inc. stock.
On average, over the past 5 years, insiders at Harvard Bioscience, Inc. have bought $253,418 and sold $0 worth of stock each year.
Highest buying activity among insiders over the last 12 months: Snider William (director) — $103,604. DENELSKY STEPHEN J (director) — $48,700. Duke John D (Chief Executive Officer) — $25,050.
The last purchase of 8,475 shares for transaction amount of $41,104 was made by Snider William (director) on 2026‑03‑17.
| 2026-03-17 | Snider William | director | 8,475 0.1887% | $4.85 | $41,104 | +30.90% | ||
| 2026-03-17 | DENELSKY STEPHEN J | director | 10,000 0.2236% | $4.87 | $48,700 | +30.90% | ||
| 2026-03-16 | Duke John D | Chief Executive Officer | 5,000 0.1118% | $5.01 | $25,050 | +27.15% | ||
| 2026-03-16 | Snider William | director | 12,525 0.279% | $4.99 | $62,500 | +27.15% | ||
| 2026-03-16 | Frost Mark T | Chief Financial Officer | 5,000 0.1116% | $5.00 | $25,000 | +27.15% | ||
| 2024-06-13 | Green James W | Chief Executive Officer | 10,000 0.0242% | $2.91 | $29,100 | -25.95% | ||
| 2024-06-06 | Green James W | Chief Executive Officer | 20,000 0.0474% | $3.07 | $61,400 | -26.85% | ||
| 2023-08-17 | Green James W | Chief Executive Officer | 25,000 0.06% | $4.38 | $109,500 | -2.08% | ||
| 2023-03-15 | Green James W | Chief Executive Officer | 20,000 0.0468% | $2.60 | $52,000 | +71.21% | ||
| 2023-03-15 | EDRICK ALAN I | director | 16,192 0.0382% | $2.62 | $42,423 | +71.21% | ||
| 2023-03-14 | Green James W | Chief Executive Officer | 20,000 0.0475% | $2.67 | $53,400 | +69.29% | ||
| 2023-03-14 | EDRICK ALAN I | director | 13,808 0.0328% | $2.67 | $36,867 | +69.29% | ||
| 2022-12-01 | Green James W | Chief Executive Officer | 15,000 0.0341% | $2.61 | $39,150 | +54.15% | ||
| 2022-11-30 | Green James W | Chief Executive Officer | 15,000 0.0341% | $2.41 | $36,150 | +66.41% | ||
| 2022-08-26 | LOY BERTRAND | 9,291 0.0231% | $3.41 | $31,682 | -5.78% | |||
| 2022-08-24 | LOY BERTRAND | 8,244 0.0207% | $3.34 | $27,535 | -2.82% | |||
| 2022-08-22 | LOY BERTRAND | 4,918 0.0118% | $3.16 | $15,541 | -2.21% | |||
| 2022-08-18 | LOY BERTRAND | 1,151 0.0028% | $3.19 | $3,672 | -2.52% | |||
| 2022-08-17 | Green James W | Chief Executive Officer | 40,000 0.0961% | $3.19 | $127,600 | -2.82% | ||
| 2022-06-15 | Green James W | Chief Executive Officer | 30,000 0.0734% | $3.71 | $111,300 | -15.53% |
| Duke John D | Chief Executive Officer | 105000 2.3065% | $910,350.00 | 1 | 0 | |
| Snider William | director | 32000 0.7029% | $277,440.00 | 2 | 0 | |
| DENELSKY STEPHEN J | director | 21000 0.4613% | $182,070.00 | 1 | 0 | |
| Frost Mark T | Chief Financial Officer | 17500 0.3844% | $151,725.00 | 1 | 0 | |
| Skystone Advisors LLC | 10 percent owner | 3744819 82.2621% | $32.47M | 64 | 5 | +9.98% |
| Green James W | Chief Executive Officer | 3111091 68.3411% | $26.97M | 16 | 5 | +16.62% |
| GRAZIANO CHANE | 10 percent owner | 3105150 68.2106% | $26.92M | 5 | 0 | +21.43% |
| HSO LIMITED PARTNERSHIP | 10 percent owner | 2757257 60.5684% | $23.91M | 40 | 2 | +8.24% |
| GREEN DAVID | director | 925571 20.3319% | $8.02M | 15 | 73 | +46.83% |
| Duchemin Jeffrey | Chief Executive Officer | 830888 18.252% | $7.2M | 4 | 12 | +3.29% |
| LEWIS EARL R | director | 467350 10.2662% | $4.05M | 9 | 1 | +28.78% |
| LOY BERTRAND | 399651 8.7791% | $3.46M | 11 | 0 | +3.36% | |
| Gagnon Robert E. | Chief Financial Officer | 321169 7.0551% | $2.78M | 6 | 12 | +16.32% |
| EDRICK ALAN I | director | 202485 4.448% | $1.76M | 3 | 0 | +66.06% |
| KENNEDY JOHN F | director | 177330 3.8954% | $1.54M | 2 | 0 | <0.0001% |
| UVEGES GEORGE | director | 142685 3.1343% | $1.24M | 5 | 2 | +13.66% |
| Eade Katherine A. | director | 121515 2.6693% | $1.05M | 1 | 0 | +15.32% |
| Loewald Thomas W | director | 103200 2.267% | $894,744.00 | 1 | 0 | +15.6% |
| Increased Positions | 35 | +55.56% | 9M | +58.55% |
| Decreased Positions | 25 | -39.68% | 4M | -24.87% |
| New Positions | 13 | New | 5M | New |
| Sold Out Positions | 8 | Sold Out | 3M | Sold Out |
| Total Postitions | 73 | +15.87% | 22M | +33.68% |
| Amh Equity Ltd | $2,639.00 | 8.99% | 4.05M | +538,832 | +15.36% | 2025-09-30 |
| Harvey Partners, Llc | $1,337.00 | 4.56% | 2.05M | -91,099 | -4.25% | 2025-09-30 |
| Vanguard Group Inc | $1,207.00 | 4.12% | 1.85M | -2,045 | -0.11% | 2025-09-30 |
| Acadian Asset Management Llc | $697.00 | 2.38% | 1.07M | +30,465 | +2.93% | 2025-09-30 |
| Meros Investment Management, Lp | $599.00 | 2.04% | 918,259 | -1,686 | -0.18% | 2025-09-30 |
| Renaissance Technologies Llc | $566.00 | 1.93% | 868,478 | +76,500 | +9.66% | 2025-09-30 |
| Blackrock, Inc. | $405.00 | 1.38% | 621,367 | -493,208 | -44.25% | 2025-09-30 |
| Granahan Investment Management, Llc | $393.00 | 1.34% | 603,519 | -897,989 | -59.81% | 2025-09-30 |
| Millennium Management Llc | $373.00 | 1.27% | 571,703 | -68,164 | -10.65% | 2025-09-30 |
| Dimensional Fund Advisors Lp | $323.00 | 1.1% | 496,144 | -630,106 | -55.95% | 2025-09-30 |