Historical shareholding details of Northwestern Mutual Wealth Management Co holdings in Immunogen, Inc. (IMGN)

Monthly changes of Northwestern Mutual Wealth Management Co shareholding in Immunogen, Inc. over the previous months

Month	Name	Total no. shares held	Percent Holding
Month	Name	Total no. shares held	Percent Holding
Sep 30, 2023	Northwestern Mutual Wealth Management Co	16,750	0.01%

Jun 30, 2023	Northwestern Mutual Wealth Management Co	16,750	0.01%

Mar 31, 2023	Northwestern Mutual Wealth Management Co	16,765	0.01%

Dec 31, 2022	Northwestern Mutual Wealth Management Co	16,750	0.01%