Historical shareholding details of Vanguard Health Care Index Fund holdings in Immunogen, Inc. (IMGN)

Monthly changes of Vanguard Health Care Index Fund 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	Vanguard Health Care Index Fund	796,203	0.29%

Nov 30, 2023	Vanguard Health Care Index Fund	799,660	0.30%

Oct 31, 2023	Vanguard Health Care Index Fund	748,057	0.28%

Sep 30, 2023	Vanguard Health Care Index Fund	757,980	0.30%

Aug 31, 2023	Vanguard Health Care Index Fund	757,931	0.30%

Jul 31, 2023	Vanguard Health Care Index Fund	757,049	0.30%

Jun 30, 2023	Vanguard Health Care Index Fund	750,282	0.30%

May 31, 2023	Vanguard Health Care Index Fund	758,363	0.30%

Apr 30, 2023	Vanguard Health Care Index Fund	694,400	0.31%