Jakob Haldor Topsoe is Director & 10% Owner at IGM Biosciences, Inc. (IGMS). They have made 10 open-market trades across 1 company since 2019, most recently 2025-08-14.
CIK 0001785882
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.
10 open-market purchases totalling $70.3M since 2019, never a sale. Across 10 scored buys the stock is up 50.2% at ninety days, and 47.3 points ahead of the S&P over the same stretch.
10 scored purchases · one row per filing · discretionary only
| Ticker | Shares | Value |
|---|---|---|
| IGMS | 91,712 | $116K |
Shares reported on the most recent Form 4, priced at the 2025-07-02 close.
| 7d | 30d | 90d | |
|---|---|---|---|
| Accuracy | 30% | 50% | 60% |
| Avg Move | -6.0% | +0.3% | +50.2% |
| Alpha | -5.4% | +0.8% | +47.3% |
| Scored | 10 | 10 | 10 |
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| IGMS | BUY | 2023-06-29 | 2023-07-03 | $9.18 | $64K | +4.6% | +2.0% | -24.5% |
| IGMS | BUY | 2023-06-26 | 2023-06-28 | $8.00 | $13.5M | +10.3% | +11.0% | -18.7% |
| IGMS | BUY | 2022-05-20 | 2022-05-24 | $16.00 | $24K | -6.1% | +7.1% | +16.9% |
| IGMS | BUY | 2022-05-12 | 2022-05-16 | $14.39 | $351K | +2.9% | -10.8% | +70.3% |
| IGMS | BUY | 2022-04-01 | 2022-04-05 | $23.00 | $25.0M | -20.0% | -25.2% | -16.7% |
| IGMS | BUY | 2020-12-11 | 2020-12-15 | $90.00 | $10.0M | -4.4% | +0.4% | -8.3% |
| IGMS | BUY | 2019-09-24 | 2019-09-26 | $20.50 | $82K | -1.0% | +30.9% | +174.0% |
| IGMS | BUY | 2019-09-19 | 2019-09-23 | $22.01 | $631K | -13.6% | -0.6% | +119.0% |
| IGMS | BUY | 2019-09-18 | 2019-09-20 | $16.01 | $20.6M | -18.6% | -11.5% | +70.6% |
| IGMS | BUY | 2019-09-18 | 2019-09-23 | $19.54 | $33K | -13.6% | -0.6% | +119.0% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.