ImmunoGen, Inc.

MILLENNIUM MANAGEMENT LLC

Report date

12/31/2023

Quarter

2023 Q4

Filed

2/14/2024

Shares

4,473,868

Value ($000)

132,650

Weight

0.1%

2013 Q4 - 2023 Q4 (19 filings)

Shares History

History scope: non-option holdings only (PUT/CALL rows excluded).

All 13F Holders	Filing date	Value ($000s)	% of Holdings	Shares	Reporting period
2023 Q4	2/14/2024	132,650	0.1%	4,473,868	12/31/2023
2023 Q3	11/14/2023	25,483	0.0%	1,605,714	9/30/2023
2023 Q2	8/14/2023	50,909	0.1%	2,697,863	6/30/2023
2023 Q1	5/15/2023	11,431	0.0%	2,976,924	3/31/2023
2022 Q4	2/14/2023	4,631	0.0%	933,720	12/31/2022
2022 Q3	11/14/2022	8,799	0.0%	1,840,837	9/30/2022
2022 Q2	8/15/2022	22,757	0.0%	5,057,049	6/30/2022
2022 Q1	5/16/2022	16,660	0.0%	3,500,017	3/31/2022
2021 Q4	2/14/2022	37,466	0.0%	5,049,291	12/31/2021
2021 Q3	11/15/2021	16,712	0.0%	2,947,521	9/30/2021
2021 Q2	8/16/2021	17,285	0.0%	2,622,908	6/30/2021
2021 Q1	5/17/2021	18,163	0.0%	2,242,301	3/31/2021
2020 Q4	2/16/2021	12,600	0.0%	1,953,474	12/31/2020
2020 Q3	11/16/2020	17,119	0.0%	4,755,374	9/30/2020
2020 Q2	8/14/2020	18,336	0.0%	3,985,994	6/30/2020
2020 Q1	5/14/2020	6,746	0.0%	1,978,258	3/31/2020
2019 Q4	2/14/2020	15,160	0.0%	2,969,579	12/31/2019
2014 Q1	5/15/2014	1,493	0.0%	100,000	3/31/2014
2013 Q4	2/14/2014	1,467	0.0%	100,000	12/31/2013