February 5, 2024 · Form 4 insider transaction
Coen Stacy Ann sold 4,583 shares of ImmunoGen, Inc. at $29.30 per share, a transaction worth $134.3K. The trade was recorded as open-market sale under a pre-scheduled Rule 10b5-1 plan and disclosed on an SEC Form 4, filed 1 day after the transaction.
Effected pursuant to a trading plan adopted on June 15, 2023 pursuant to Rule 10b5-1 under the Securities Exchange Act of 1934, as amended.