IGM Biosciences, Inc.

Historical 13F Holders

Symbol
IGMS
CUSIP
449585108
All holders as of
Q3 2025
Type
Equity
Class
COM
Reported Value, Excluding Options
Total Filings

13D/G Filers

Investors who own more than 5% of a class must file a Schedule 13D or 13G. Every filing for 449585108 since 12/18/2024, newest first.

Filer % of Class Filed
Glazer Capital, LLC 13G/A Amendment 1
0% 11/13/2025
Event 9/30/2025
Baker Bros. Advisors LP 13D/A Amendment 8
0% 8/18/2025
Event 8/14/2025
Topsoe Holding A/S 13D/A Amendment 3
0% 8/18/2025
Event 8/14/2025
Redmile Group, LLC 13D/A Amendment 7
0% 8/15/2025
Event 8/14/2025
Glazer Capital, LLC 13G
7.3% 7/9/2025
Event 7/2/2025
Price T Rowe Associates Inc /MD/ 13G/A Amendment 6 10.5% 2/14/2025
Event 12/31/2024
Price T Rowe Associates Inc /MD/ 13G/A Amendment 7 0.2% 2/7/2025
Event 1/31/2025

13F Holders by Quarter

Period Filings Shares, Excl. Options Value, Excl. Options
2025 Q3 1 400 $508.00
2025 Q2 68 16.0 M $17.9 M
2025 Q1 82 17.8 M $20.5 M
2024 Q4 90 21.7 M $133 M
2024 Q3 81 21.6 M $357 M
2024 Q2 91 22.4 M $154 M
2024 Q1 94 23.0 M $222 M
2023 Q4 79 23.1 M $192 M
2023 Q3 84 22.4 M $187 M
2023 Q2 86 22.3 M $208 M
2023 Q1 80 17.9 M $245 M
2022 Q4 88 18.2 M $310 M
2022 Q3 98 17.7 M $402 M
2022 Q2 94 17.5 M $316 M
2022 Q1 113 18.3 M $488 M
2021 Q4 97 17.7 M $518 M
2021 Q3 122 16.9 M $1.11 B
2021 Q2 114 16.3 M $1.36 B
2021 Q1 123 18.0 M $1.38 B
2020 Q4 122 17.2 M $1.52 B
2020 Q3 106 14.7 M $1.08 B
2020 Q2 83 14.0 M $1.02 B
2020 Q1 64 13.3 M $742 M
2019 Q4 52 12.3 M $468 M
2019 Q3 34 10.0 M $178 M