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

Monthly changes of Vanguard Russell 2000 Growth 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 Growth Index Fund	122,774	0.04%

Nov 30, 2023	Vanguard Russell 2000 Growth Index Fund	121,951	0.05%

Oct 31, 2023	Vanguard Russell 2000 Growth Index Fund	118,014	0.04%

Sep 30, 2023	Vanguard Russell 2000 Growth Index Fund	116,978	0.05%

Aug 31, 2023	Vanguard Russell 2000 Growth Index Fund	123,152	0.05%

Jul 31, 2023	Vanguard Russell 2000 Growth Index Fund	121,398	0.05%

Jun 30, 2023	Vanguard Russell 2000 Growth Index Fund	119,768	0.05%

May 31, 2023	Vanguard Russell 2000 Growth Index Fund	94,962	0.04%

Apr 30, 2023	Vanguard Russell 2000 Growth Index Fund	85,687	0.04%