Dean J. Mitchell - Sep 3, 2021 Form 4 Insider Report for ImmunoGen, Inc. (IMGN)

Role
Director
Signature
/s/ Joseph J. Kenny, attorney in fact
Stock symbol
IMGN
Transactions as of
Sep 3, 2021
Transactions value $
$0
Form type
4
Date filed
9/3/2021, 04:06 PM
Previous filing
Jul 2, 2021
Next filing
Oct 1, 2021

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction IMGN Common Stock Options Exercise $9.2K +5K +50% $1.84* 15K Sep 3, 2021 Direct
transaction IMGN Common Stock Options Exercise $46.4K +10K +66.67% $4.64 25K Sep 3, 2021 Direct
transaction IMGN Common Stock Options Exercise $37.8K +18K +72% $2.10* 43K Sep 3, 2021 Direct
transaction IMGN Common Stock Options Exercise $228K +50K +116.28% $4.56 93K Sep 3, 2021 Direct

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction IMGN Stock Option (right to buy) Options Exercise -$9.2K -5K -100% $1.84* 0 Sep 3, 2021 Common Stock 5K $1.84 Direct F1
transaction IMGN Stock Option (right to buy) Options Exercise -$46.4K -10K -100% $4.64 0 Sep 3, 2021 Common Stock 10K $4.64 Direct F2
transaction IMGN Stock Option (right to buy) Options Exercise -$37.8K -18K -100% $2.10* 0 Sep 3, 2021 Common Stock 18K $2.10 Direct F3
transaction IMGN Stock Option (right to buy) Options Exercise -$228K -50K -100% $4.56 0 Sep 3, 2021 Common Stock 50K $4.56 Direct F4
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 Exercisable as to 2,500 shares on each of 3/1/17 and 6/1/17, contingent upon the individual remaining a director as of each vesting date.
F2 Exercisable as to 2,500 shares on each of 9/1/17, 12/1/17, 3/1/18, and 6/1/18, contingent upon the individual remaining a director as of each vesting date.
F3 Exercisable as to 4,500 shares on each of 9/1/19, 12/1/19, 3/1/20, and 6/1/20, contingent upon the individual remaining a director as of each vesting date.
F4 Exercisable as to 12,500 shares on each of 9/1/20, 12/1/20, 3/1/21, and 6/1/21, contingent upon the individual remaining a director as of each vesting date.