Company profile
IGM Biosciences, Inc. Insider Trading
IGMSEvery SEC Form 4 insider trading filing for IGM Biosciences, Inc. (IGMS) since April 2023 — open-market buys and sells by directors and officers, option exercises, and cluster activity, updated as each filing is reported to the SEC. Why 2023?
- Sector
- Pharmaceutical Preparations
- CIK
- 0001496323
- Filings
- 192
- Insiders
- 25
- Last filing
- 2025-08-14
Activity summary
No insider transactions in the last 30 days. The most recent was on August 14, 2025, when Christina Teng Topsoe sold 9,800 shares. 192 filings from 25 insiders are on record below.
Three year balance
Buy and sell value by quarter, Q1 23 to Q3 25. IGM Biosciences, Inc. insiders are net buyers across the period shown.
Bars below the rule are sales, above are purchases. Largest quarter on the chart is $109.8M.
No insider activity recorded for IGMS in the last 90 days.
Insider Transactions
Sourced from SEC EDGAR Form 4 filings. Updated hourly.
| Date | Insider | Company | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Aug 14, 2025 | Christina Teng Topsoe | IGMS | Disposition | 9,800 | — | — |
| Aug 14, 2025 | Redmile Group, LLC | IGMS | Disposition | 7,199,325 | — | — |
| Aug 14, 2025 | Michael Stewart Lee | IGMS | Disposition | 12,712 | — | — |
| Aug 14, 2025 | Christina Teng Topsoe | IGMS | Disposition | 10,400,564 | — | — |
| Aug 14, 2025 | Topsoe Holding A/S | IGMS | Disposition | 5,044,295 | — | — |
45 more transactions hidden
Free account · No credit card required
Building something? Get API access →
Query this yourself
The same rows, over the API.
curl "https://api.form4api.com/v1/transactions?ticker=IGMS" \
-H "X-Api-Key: $KEY"Top insiders
By total value filed.