January 16, 2024 · Form 4 insider transaction
Wingrove Theresa bought 58,900 shares of ImmunoGen, Inc. at $4.83 per share, a transaction worth $284.5K. The trade was recorded as option exercise under a pre-scheduled Rule 10b5-1 plan and disclosed on an SEC Form 4, filed 2 days after the transaction.
Effected pursuant to a trading plan adopted on June 13, 2023 pursuant to Rule 10b5-1 under the Securities Exchange Act of 1934, as amended.