Christina Teng Topsoe is Director & 10% Owner at IGM Biosciences, Inc. (IGMS). They have made 6 open-market trades across 1 company since 2019, most recently 2025-08-14.
CIK 0001786442
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.
6 open-market purchases totalling $69.2M since 2019, never a sale. Across 6 scored buys the stock is up 11.3% at ninety days, and 11.3 points ahead of the S&P over the same stretch.
6 scored purchases · one row per filing · discretionary only
| Ticker | Shares | Value |
|---|---|---|
| IGMS | 54,235 | $69K |
Shares reported on the most recent Form 4, priced at the 2025-07-02 close.
| 7d | 30d | 90d | |
|---|---|---|---|
| Accuracy | 50% | 33% | 33% |
| Avg Move | -3.7% | -6.8% | +11.3% |
| Alpha | -3.6% | -6.1% | +11.3% |
| Scored | 6 | 6 | 6 |
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| IGMS | BUY | 2023-06-30 | 2023-07-05 | $9.32 | $28K | +7.6% | -4.9% | -29.6% |
| IGMS | BUY | 2023-06-26 | 2023-06-28 | $8.00 | $13.5M | +10.3% | +11.0% | -18.7% |
| IGMS | BUY | 2022-05-12 | 2022-05-16 | $14.81 | $167K | +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 | 2019-09-18 | 2019-09-20 | $16.00 | $20.6M | -18.6% | -11.5% | +70.6% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.