ImmunoGen, Inc.

GROUP ONE TRADING LLC

Report date

9/30/2023

Quarter

2023 Q3

Filed

11/9/2023

Shares

238,327

Value ($000)

3,782

Weight

0.2%

2013 Q4 - 2023 Q3 (15 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 Q3	11/9/2023	3,782	0.2%	238,327	9/30/2023
2023 Q2	8/9/2023	1,803	0.1%	95,561	6/30/2023
2023 Q1	5/12/2023	842	0.0%	219,203	3/31/2023
2022 Q4	2/9/2023	690	0.0%	139,058	12/31/2022
2022 Q3	11/9/2022	310	0.0%	64,900	9/30/2022
2022 Q2	8/11/2022	363	0.0%	80,641	6/30/2022
2022 Q1	5/12/2022	472	0.0%	99,216	3/31/2022
2021 Q4	2/11/2022	341	0.0%	45,929	12/31/2021
2021 Q3	11/12/2021	417	0.0%	73,631	9/30/2021
2021 Q2	8/10/2021	89	0.0%	13,469	6/30/2021
2020 Q4	2/10/2021	346	0.0%	53,713	12/31/2020
2020 Q2	8/13/2020	120	0.0%	26,171	6/30/2020
2020 Q1	5/13/2020	20	0.0%	5,886	3/31/2020
2014 Q1	5/7/2014	187	0.0%	12,498	3/31/2014
2013 Q4	1/31/2014	672	0.1%	45,780	12/31/2013