IGMSUnknownNano-Cap
IGM Biosciences, Inc. Insider Trading Activity
Every SEC Form 4 insider transaction reported for IGM Biosciences, Inc. (IGMS), sourced directly from SEC EDGAR and updated as new filings are accepted.
By Trabud Research Team · SEC Form 4 & insider trading data analysts
Last updated:
Quick Answer
Are IGMS insiders buying or selling?
IGM Biosciences, Inc. insiders reported 31 open-market buys ($194.6M) and 115 sells ($6.9M) across 146 Form 4 filings — a net buying position of $187.7M.
Source: SEC EDGAR Form 4
Key Statistics (as of Jul 25, 2025)
Total Form 4 filings
146
SEC EDGAR
Insider filers
17
Insider buys (31)
$194.6M
Insider sells (115)
$6.9M
Insider sentiment
Net buyingNet insider flow of $187.7M in net buying.
Recent IGMS insider transactions
| Date | Insider | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Jul 25, 2025 | Misbah Tahir | CHIEF FINANCIAL OFFICER | Sale | 8.7K | $1.27 | $11.1K |
| Jul 25, 2025 | Mary Beth Harler | Chief Executive Officer | Sale | 14.5K | $1.27 | $18.5K |
| Jul 25, 2025 | Lisa Lynn Decker | CHIEF BUSINESS OFFICER | Sale | 4.4K | $1.27 | $5.6K |
| Jun 21, 2025 | Steven Weber | PRINCIPAL ACCOUNTING OFFICER | Sale | 486 | $1.20 | $582.81 |
| Jun 21, 2025 | Misbah Tahir | CHIEF FINANCIAL OFFICER | Sale | 1.5K | $1.20 | $1.8K |
| Jun 21, 2025 | Mary Beth Harler | Chief Executive Officer | Sale | 1.5K | $1.20 | $1.8K |
| Jun 21, 2025 | Lisa Lynn Decker | CHIEF BUSINESS OFFICER | Sale | 951 | $1.20 | $1.1K |
| May 16, 2025 | Steven Weber | PRINCIPAL ACCOUNTING OFFICER | Sale | 1.9K | $1.12 | $2.1K |
| Mar 18, 2025 | Steven Weber | PRINCIPAL ACCOUNTING OFFICER | Sale | 1.7K | $1.23 | $2.1K |
| Mar 18, 2025 | Misbah Tahir | CHIEF FINANCIAL OFFICER | Sale | 7.3K | $1.23 | $9.0K |
| Mar 18, 2025 | Mary Beth Harler | Chief Executive Officer | Sale | 7.3K | $1.23 | $9.0K |
| Mar 18, 2025 | Lisa Lynn Decker | CHIEF BUSINESS OFFICER | Sale | 4.5K | $1.23 | $5.5K |
| Jan 17, 2025 | Steven Weber | PRINCIPAL ACCOUNTING OFFICER | Sale | 1.1K | $1.70 | $1.9K |
| Dec 19, 2024 | Steven Weber | PRINCIPAL ACCOUNTING OFFICER | Sale | 539 | $7.48 | $4.0K |
| Dec 19, 2024 | Lisa Lynn Decker | CHIEF BUSINESS OFFICER | Sale | 1.1K | $7.48 | $8.0K |
| Dec 19, 2024 | Mary Beth Harler | Chief Executive Officer | Sale | 1.7K | $7.48 | $12.8K |
| Dec 19, 2024 | Misbah Tahir | CHIEF FINANCIAL OFFICER | Sale | 1.7K | $7.48 | $12.8K |
| Sep 18, 2024 | Steven Weber | PRINCIPAL ACCOUNTING OFFICER | Sale | 469 | $11.54 | $5.4K |
| Sep 18, 2024 | Chris H Takimoto | CHIEF MEDICAL OFFICER | Sale | 1.5K | $11.54 | $17.2K |
| Sep 18, 2024 | Misbah Tahir | CHIEF FINANCIAL OFFICER | Sale | 1.5K | $11.54 | $17.2K |
| Sep 18, 2024 | Fred Schwarzer | CEO AND PRESIDENT | Sale | 3.9K | $11.54 | $45.5K |
| Sep 18, 2024 | Bruce Keyt | CHIEF SCIENTIFIC OFFICER | Sale | 1.5K | $11.54 | $17.2K |
| Sep 18, 2024 | Mary Beth Harler | Head, Research & Autoimmunity | Sale | 1.5K | $11.54 | $17.2K |
| Sep 18, 2024 | Lisa Lynn Decker | CHIEF BUSINESS OFFICER | Sale | 925 | $11.54 | $10.7K |
| Jul 29, 2024 | Julie Hambleton | Director | Sale | 15.1K | $14.00 | $211.8K |
Showing the 25 most recent of 146 Form 4 filings for IGM Biosciences, Inc..
Most active IGMS insiders
- Bruce Keyt29 filings
- Daniel Shinyu Chen15 filings
- Lisa Lynn Decker14 filings
- Misbah Tahir13 filings
- Chris H Takimoto9 filings
Ask anything about IGMS insider activity
Use Trabud's AI agent to query IGM Biosciences, Inc.'s Form 4 history in plain English — "Show me IGMS CEO purchases this year" or compare it against any other ticker.
Open the AI agentIGMS insider trading FAQ
Are IGM Biosciences, Inc. insiders buying or selling?
Across 146 SEC Form 4 filings, IGM Biosciences, Inc. (IGMS) insiders reported 31 open-market purchases totaling $194.6M and 115 sales totaling $6.9M. That is a net buying position of $187.7M.
How many insiders trade IGMS stock?
17 distinct insider filers — officers, directors, 10%+ owners, and investment groups filing jointly — have reported Form 4 transactions for IGM Biosciences, Inc.. The most recent filing was accepted on Jul 25, 2025.
Where does Trabud get IGMS insider trading data?
All IGMS insider trading data comes directly from official SEC EDGAR Form 4 filings, which corporate insiders must submit within two business days of a transaction under Section 16(a) of the Securities Exchange Act of 1934.
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