Renee Lentini

Date	Company	Security	Transaction	Code	Indirect	10b5-1	$Price	#Shares	$Value	#Remaining
12 Feb 24	IMGN Immunogen	Common Stock	Sale back to company	Dispose D	No	No	0	14,723	0.00	0
12 Feb 24	IMGN Immunogen	RSU Common Stock	Sale back to company	Dispose D	No	No	0	10,139	0.00	0
12 Feb 24	IMGN Immunogen	Stock Option Common Stock	Sale back to company	Dispose D	No	No	4.66	50,610	235.84 k	0
12 Feb 24	IMGN Immunogen	Stock Option Common Stock	Sale back to company	Dispose D	No	No	5.32	53,831	286.38 k	0
12 Feb 24	IMGN Immunogen	Stock Option Common Stock	Sale back to company	Dispose D	No	No	7.69	25,250	194.17 k	0
12 Feb 24	IMGN Immunogen	Stock Option Common Stock	Sale back to company	Dispose D	No	No	6.98	12,625	88.12 k	0
12 Feb 24	IMGN Immunogen	Stock Option Common Stock	Sale back to company	Dispose D	No	No	4.55	6,555	29.83 k	0
12 Feb 24	IMGN Immunogen	Stock Option Common Stock	Sale back to company	Dispose D	No	No	16.72	8,250	137.94 k	0
12 Feb 24	IMGN Immunogen	RSU Common Stock	Sale back to company	Dispose D	No	No	0	39,370	0.00	0
5 Feb 24	IMGN Immunogen	Common Stock	Sell	Dispose S	No	Yes	29.3	2,631	77.09 k	14,723

Data from 3, 4 and 5 filings. Values as filed, not updated for current price.