20 insiders reported 56 Form 4 transactions for IGM Biosciences, Inc. (IGMS) over the past 18 months (most recent 2025-08-18). Recent activity: BAKER FELIX (Insider) Sell 357,048 shares, BAKER JULIAN (Insider) Sell 3.8M shares, BAKER BROS. ADVISORS LP (Insider) Sell 357,048 shares, Baker Brothers Life Sciences LP (Insider) Sell 357,048 shares, 667, L.P. (Insider) Sell 357,048 shares. Source: SEC Form 4.
| Date | Insider | Title | Type | Shares | Value |
|---|---|---|---|---|---|
| 2025-08-18 | BAKER FELIX | Insider | Sell | 357,048 | $0 |
| 2025-08-18 | BAKER JULIAN | Insider | Sell | 3.8M | $0 |
| 2025-08-18 | BAKER BROS. ADVISORS LP | Insider | Sell | 357,048 | $0 |
| 2025-08-18 | Baker Brothers Life Sciences LP | Insider | Sell | 357,048 | $0 |
| 2025-08-18 | 667, L.P. | Insider | Sell | 357,048 | $0 |
| 2025-08-18 | Baker Bros. Advisors (GP) LLC | Insider | Sell | 357,048 | $0 |
| 2025-08-18 | BAKER JULIAN | Insider | Sell | 357,048 | $0 |
| 2025-08-18 | BAKER FELIX | Insider | Sell | 3.8M | $0 |
| 2025-08-18 | BAKER BROS. ADVISORS LP | Insider | Sell | 3.8M | $0 |
| 2025-08-18 | Baker Brothers Life Sciences LP | Insider | Sell | 3.8M | $0 |
| 2025-08-18 | 667, L.P. | Insider | Sell | 3.8M | $0 |
| 2025-08-18 | Baker Bros. Advisors (GP) LLC | Insider | Sell | 3.8M | $0 |
| 2025-08-15 | Green Jeremy | 10% Owner | Sell | 3.0M | $0 |
| 2025-08-15 | Redmile Group, LLC | Director | Sell | 3.0M | $0 |
| 2025-08-14 | Strohl William | Director | Sell | 125,000 | $0 |
| 2025-08-14 | Topsoe Christina Teng | Director | Sell | 54,235 | $0 |
| 2025-08-14 | Topsoe Christina Teng | Director | Sell | 10.4M | $0 |
| 2025-08-14 | Topsoe Christina Teng | Director | Sell | 9,800 | $0 |
| 2025-08-14 | BEHRENS M KATHLEEN | Director | Sell | 22,222 | $0 |
| 2025-08-14 | BEHRENS M KATHLEEN | Director | Sell | 330,700 | $0 |
| 2025-08-14 | BEHRENS M KATHLEEN | Director | Sell | 29,806 | $0 |
| 2025-08-14 | Topsoe Jakob Haldor | Director | Sell | 91,712 | $0 |
| 2025-08-14 | Topsoe Jakob Haldor | Director | Sell | 10.4M | $0 |
| 2025-08-14 | Thompson Elizabeth H.Z. | Director | Sell | 7,196 | $0 |
| 2025-08-14 | BEHRENS M KATHLEEN | Director | Sell | 29,807 | $0 |
Source: SEC Form 4 filings · as of 2025-08-18