ImmunoGen, Inc.

ADAGE CAPITAL PARTNERS GP, L.L.C.

Report date

12/31/2023

Quarter

2023 Q4

Filed

2/14/2024

Shares

971,928

Value ($000)

28,818

Weight

0.1%

2020 Q4 - 2023 Q4 (13 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	28,818	0.1%	971,928	12/31/2023
2023 Q3	11/14/2023	3,174	0.0%	200,000	9/30/2023
2023 Q2	8/14/2023	12,266	0.0%	650,000	6/30/2023
2023 Q1	5/15/2023	67,710	0.2%	17,632,815	3/31/2023
2022 Q4	2/14/2023	55,150	0.1%	11,119,000	12/31/2022
2022 Q3	11/14/2022	37,762	0.1%	7,900,000	9/30/2022
2022 Q2	8/15/2022	52,138	0.1%	11,586,193	6/30/2022
2022 Q1	5/16/2022	55,150	0.1%	11,586,193	3/31/2022
2021 Q4	2/14/2022	76,324	0.1%	10,286,193	12/31/2021
2021 Q3	11/15/2021	43,943	0.1%	7,750,000	9/30/2021
2021 Q2	8/16/2021	46,130	0.1%	7,000,000	6/30/2021
2021 Q1	5/17/2021	36,450	0.1%	4,500,000	3/31/2021
2020 Q4	2/16/2021	15,964	0.0%	2,475,000	12/31/2020