Historical shareholding details of State Street Russell Small Cap® Index holdings in Immunogen, Inc. (IMGN)

Monthly changes of State Street Russell Small Cap® Index shareholding in Immunogen, Inc. over the previous months

Month	Name	Total no. shares held	Percent Holding
Month	Name	Total no. shares held	Percent Holding
Dec 31, 2023	State Street Russell Small Cap® Index	874,904	0.31%

Nov 30, 2023	State Street Russell Small Cap® Index	874,904	0.33%

Oct 31, 2023	State Street Russell Small Cap® Index	875,704	0.33%

Sep 30, 2023	State Street Russell Small Cap® Index	875,704	0.35%

Aug 31, 2023	State Street Russell Small Cap® Index	902,504	0.36%

Jul 31, 2023	State Street Russell Small Cap® Index	902,504	0.36%

Jun 30, 2023	State Street Russell Small Cap® Index	894,104	0.36%

May 31, 2023	State Street Russell Small Cap® Index	923,404	0.36%

Apr 30, 2023	State Street Russell Small Cap® Index	810,604	0.36%