M. Kathleen Behrens is Director at IGM Biosciences, Inc. (IGMS). They have made 14 open-market trades across 3 companies since 2011, most recently 2026-06-04.
CIK 0001211701
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.
12 open-market purchases totalling $13.2M since 2011, against 2 sales. Across 11 scored buys the stock is up 18.0% at ninety days, and 17.4 points ahead of the S&P over the same stretch.
11 scored purchases · one row per filing · discretionary only
| 7d | 30d | 90d | |
|---|---|---|---|
| Accuracy | 36% | 64% | 73% |
| Avg Move | +3.4% | +3.9% | +18.0% |
| Alpha | +4.9% | +3.1% | +17.4% |
| Scored | 11 | 11 | 11 |
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| IGMS | BUY | 2023-06-26 | 2023-06-28 | $8.00 | $900K | +10.3% | +11.0% | -18.7% |
| IGMS | BUY | 2022-11-08 | 2022-11-10 | $17.14 | $1.0M | -2.9% | -12.3% | +2.2% |
| IGMS | BUY | 2022-04-01 | 2022-04-04 | $23.00 | $1.4M | -15.5% | -21.3% | -18.2% |
| SRPT | SELL | 2021-03-10 | 2021-03-10 | $85.76 | $429K | -1.4% | -16.7% | -6.0% |
| IGMS | BUY | 2020-12-11 | 2020-12-15 | $90.00 | $3.0M | -4.4% | +0.4% | -8.3% |
| IGMS | BUY | 2020-09-10 | 2020-09-14 | $60.86 | $3.2M | +12.5% | +22.5% | +36.8% |
| IGMS | BUY | 2019-12-09 | 2019-12-11 | $24.87 | $497K | +67.6% | +25.0% | +83.4% |
| IGMS | BUY | 2019-09-18 | 2019-09-20 | $16.00 | $1.0M | -18.6% | -11.5% | +70.6% |
| SRPT | BUY | 2019-09-06 | 2019-09-06 | $87.98 | $220K | -2.9% | -6.1% | +27.6% |
| SRPT | SELL | 2018-10-31 | 2018-11-02 | $131.71 | $1.3M | -23.7% | -10.8% | -4.9% |
| SRPT | BUY | 2016-03-14 | 2016-03-16 | $16.27 | $1.2M | +21.7% | +34.5% | +21.6% |
| SRPT | BUY | 2013-09-16 | 2013-09-18 | $37.04 | $241K | -15.4% | +0.6% | +0.6% |
| SRPT | BUY | 2012-09-07 | 2012-09-11 | $14.73 | $258K | -15.4% | +0.6% | +0.6% |
| AVII | BUY | 2011-04-06 | 2011-04-06 | $1.50 | $150K | N/A | N/A | N/A |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.