Historical shareholding details of Vanguard Russell 2000 Index Fund holdings in Immunogen, Inc. (IMGN)

Monthly changes of Vanguard Russell 2000 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 2000 Index Fund	785,569	0.28%

Nov 30, 2023	Vanguard Russell 2000 Index Fund	738,471	0.28%

Oct 31, 2023	Vanguard Russell 2000 Index Fund	724,509	0.27%

Sep 30, 2023	Vanguard Russell 2000 Index Fund	697,757	0.28%

Aug 31, 2023	Vanguard Russell 2000 Index Fund	699,785	0.28%

Jul 31, 2023	Vanguard Russell 2000 Index Fund	682,818	0.27%

Jun 30, 2023	Vanguard Russell 2000 Index Fund	669,184	0.27%

May 31, 2023	Vanguard Russell 2000 Index Fund	649,608	0.25%

Apr 30, 2023	Vanguard Russell 2000 Index Fund	580,112	0.26%