Historical shareholding details of Cubist Systematic Strategies, LLC holdings in Immunogen, Inc. (IMGN)

Monthly changes of Cubist Systematic Strategies, LLC shareholding in Immunogen, Inc. over the previous months

Month	Name	Total no. shares held	Percent Holding
Month	Name	Total no. shares held	Percent Holding
Sep 30, 2023	Cubist Systematic Strategies, Llc	26,796	0.01%

Jun 30, 2023	Cubist Systematic Strategies, Llc	164,774	0.07%

Mar 31, 2023	Cubist Systematic Strategies, Llc	11,435	0.00%

Dec 31, 2022	Cubist Systematic Strategies, Llc	257,772	0.11%