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SEC Form 4 research

ImmunoGen, Inc. insider transactions

Inspect ImmunoGen, Inc.'s public SEC insider acquisitions and sales, reporting owners and source receipts.

As of 2026-10-14T07:26:40.310Z

Issuer CIK
0000855654
Reporting owners
48
Officers and directors
19
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What is a Form 4?

Animation: what a Form 4 is, shown with one real example. Sonic Automotive (SAH) reporting owner Paul P. Rusnak bought 13,701 shares at $59.78 on Wednesday, October 7, 2026, transaction code P, an open-market purchase (S is a sale and A is an award from the company). A timeline marks the SEC's two-business-day filing deadline, which ends Friday, October 9. The SEC accepted the Form 4 at 4:33:21 PM ET on October 9, and NexusTrade treats it as public one minute later, at 4:34:21 PM ET. A lamp for NexusTrade's InsiderTrades indicator stays off from the trade date until that moment, then counts one purchase worth 13,701 × $59.78 = $819,045.78.
In this example the shares were bought on Oct 7, 2026, and NexusTrade's InsiderTrades indicator can count the purchase starting at 4:34:21 PM ET on Oct 9, one minute after the SEC accepted the Form 4.

A Form 4 is the SEC filing a company insider, such as an officer, director or 10% owner, uses to report a trade in the company's stock, generally within two business days. The animation follows one real filing as an example: Paul P. Rusnak's purchase of Sonic Automotive (SAH) shares on October 7, 2026.

The same reading applies to every row on this page. The trade date is when the shares changed hands. The available date is when NexusTrade treats the filing as public, and a NexusTrade InsiderTrades indicator counts a purchase (code P) or sale (code S) only from that moment. Code A awards are not counted as purchases.

Recent insider disclosures

This table includes purchases, sales and awards in the public filing record. Awards and open-market purchases are distinct transaction codes. For historical research, use the public availability date to determine when the transaction was knowable.

Read code P as a purchase, S as a sale and A as an award. An award is an acquisition, but it is not an open-market purchase. Open the filing receipt to check the transaction details.

Show the table · 0 rows, 7 columns

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Most recent 90-day source activity, up to 50 rows. No rows means no matching recent records, not no historical activity.

Officers and directors in the directory

Show the table · 22 rows, 3 columns

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Berkenblit Anna00016918686
Enyedy Mark J00015869659
O'Leary James J00014497537
Lentini Renee00018387774
Wingrove Theresa000151072013
Goldberg Mark Alan000153247530
PERRY GREGORY D00012363717
Peterson Kristine00015085962
JUNIUS DANIEL M000109415940
BARROWS CRAIG00011778137
BLATTLER WALTER000119834085
CARTER DAVID WARREN000120093115
Coen Stacy Ann00018141508
FOSTER DAVID G00011778542
Gregory Richard J.00016297676
Johnston David Brannon000148651917
LAMBERT JOHN000119833850
MITCHELL DEAN J000119929746
Morris Charles Q000148996613
ONETTO NICOLE00012200491
Ryll Thomas00017015313
SAYARE MITCHEL000120119667
Berkenblit Anna ↗Enyedy Mark J ↗O'Leary James J ↗Lentini Renee ↗Wingrove Theresa ↗Goldberg Mark Alan ↗PERRY GREGORY D ↗Peterson Kristine ↗JUNIUS DANIEL M ↗BARROWS CRAIG ↗BLATTLER WALTER ↗CARTER DAVID WARREN ↗Coen Stacy Ann ↗FOSTER DAVID G ↗Gregory Richard J. ↗Johnston David Brannon ↗LAMBERT JOHN ↗MITCHELL DEAN J ↗Morris Charles Q ↗ONETTO NICOLE ↗Ryll Thomas ↗SAYARE MITCHEL ↗

Which transactions qualify for the company tracker

The company strategy uses verified officers and directors with qualifying acquisitions at this issuer. Other reporting owners may appear in source records without becoming strategy signals.

Strategy eligibility is held while filing coverage is unresolved.

Historical follower simulations are separate from these source transactions. They do not establish live trading results.