Historical shareholding details of Vanguard Russell 3000 Index Fund holdings in Immunogen, Inc. (IMGN)

Monthly changes of Vanguard Russell 3000 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 Russell 3000 Index Fund	15,637	0.01%

Nov 30, 2023	Vanguard Russell 3000 Index Fund	16,005	0.01%

Oct 31, 2023	Vanguard Russell 3000 Index Fund	15,533	0.01%

Sep 30, 2023	Vanguard Russell 3000 Index Fund	15,496	0.01%

Aug 31, 2023	Vanguard Russell 3000 Index Fund	15,296	0.01%

Jul 31, 2023	Vanguard Russell 3000 Index Fund	15,224	0.01%

Jun 30, 2023	Vanguard Russell 3000 Index Fund	15,404	0.01%

May 31, 2023	Vanguard Russell 3000 Index Fund	16,913	0.01%

Apr 30, 2023	Vanguard Russell 3000 Index Fund	17,165	0.01%