Robert E. Gagnon is CFO at HARVARD BIOSCIENCE INC (HBIO). They have made 32 open-market trades across 3 companies since 2010, most recently 2026-09-03.
CIK 0001504983
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
5 open-market purchases totalling $94K since 2014, against 27 sales. Across 5 scored buys the stock is up 5.1% at ninety days, and 5.6 points ahead of the S&P over the same stretch.
5 scored purchases · one row per filing · discretionary only
| Ticker | Shares | Value |
|---|---|---|
| IRD | 556,375 | $2.1M |
| CLH | 5,000 | $1.6M |
| BIIB | 4,356 | $1.0M |
| VSTM | 41,678 | $361K |
| HBIO | 27,556 | $225K |
| Total | $5.3M |
Shares reported on the most recent Form 4, priced at the 2026-09-08 close.
| 7d | 30d | 90d | |
|---|---|---|---|
| Accuracy | 40% | 40% | 40% |
| Avg Move | -8.3% | -1.7% | +5.1% |
| Alpha | -5.8% | -2.9% | +5.6% |
| Scored | 5 | 5 | 5 |
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| IRD | SELL · 10b5-1 | 2026-09-03 | 2026-09-08 | $4.54 | $127K | -3.9% | -17.0% | — |
| IRD | SELL | 2026-07-23 | 2026-07-27 | $2.95 | $23K | +14.8% | +17.0% | — |
| IRD | SELL | 2026-04-23 | 2026-04-27 | $5.18 | $41K | +5.3% | -18.5% | -33.9% |
| VSTM | SELL | 2025-12-16 | 2025-12-18 | $9.14 | $3K | -0.5% | -14.3% | -28.6% |
| VSTM | SELL | 2025-09-16 | 2025-09-18 | $9.99 | $3K | -6.5% | -15.0% | -15.7% |
| VSTM | SELL | 2025-06-16 | 2025-06-20 | $5.65 | $2K | -0.6% | +4.5% | +95.5% |
| VSTM | SELL | 2025-03-17 | 2025-03-19 | $6.95 | $2K | -13.1% | -10.5% | -23.5% |
| VSTM | SELL | 2024-12-16 | 2024-12-20 | $4.49 | $2K | +66.3% | +28.0% | +62.0% |
| VSTM | SELL | 2024-09-19 | 2024-09-20 | $2.79 | $365 | +0.3% | +23.1% | +53.1% |
| VSTM | SELL | 2024-09-16 | 2024-09-18 | $2.80 | $804 | +6.0% | +5.0% | +63.1% |
| VSTM | SELL | 2024-06-17 | 2024-06-20 | $3.40 | $1K | -10.5% | +4.3% | -17.4% |
| VSTM | SELL | 2024-03-18 | 2024-03-20 | $10.61 | $4K | -1.5% | -15.9% | -72.1% |
| VSTM | SELL · 10b5-1 | 2024-02-06 | 2024-02-07 | $13.70 | $252K | -6.2% | -14.4% | -15.5% |
| VSTM | SELL · 10b5-1 | 2024-01-12 | 2024-01-17 | $10.95 | $202K | +11.1% | +12.1% | -1.6% |
| VSTM | SELL | 2023-12-18 | 2023-12-20 | $7.67 | $3K | +4.9% | +43.2% | +45.0% |
| VSTM | SELL | 2023-09-18 | 2023-09-20 | $9.89 | $4K | -16.3% | -21.7% | -14.5% |
| VSTM | SELL | 2023-06-16 | 2023-06-21 | $10.04 | $4K | -19.4% | +2.9% | -1.2% |
| VSTM | SELL | 2023-03-16 | 2023-03-20 | $0.41 | $2K | -12.1% | -13.5% | +79.1% |
| VSTM | SELL | 2022-12-16 | 2022-12-20 | $0.40 | $5K | +12.5% | +50.3% | +21.5% |
| VSTM | SELL | 2022-09-19 | 2022-09-21 | $1.13 | $2K | -17.5% | -70.6% | -65.0% |
| VSTM | SELL | 2022-06-21 | 2022-06-22 | $1.14 | $2K | +9.9% | +5.4% | +0.9% |
| VSTM | SELL | 2022-05-16 | 2022-05-17 | $1.03 | $17K | +9.5% | -10.3% | +18.1% |
| VSTM | SELL | 2022-03-21 | 2022-03-23 | $1.27 | $2K | +16.8% | +19.1% | -16.0% |
| VSTM | SELL | 2022-01-03 | 2022-01-05 | $2.05 | $40K | -17.7% | -32.7% | -24.2% |
| VSTM | SELL | 2021-12-20 | 2021-12-22 | $2.27 | $12K | -10.1% | -35.1% | -43.0% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.