Y-mAbs Therapeutics, Inc.

Historical 13F Holders

Symbol
YMAB
CUSIP
984241109
All holders as of
Q3 2025
Type
Equity
Class
COM
Reported Value, Excluding Options
Total Shares Held, Excluding Options
Total Filers

13D/G Filers

Each filer's latest filing for 984241109 since 12/18/2024, largest first.

Filer % of Class Filed
Acorn Bioventures, L.P. 13G/A
6.2% 8/20/2025
Event 8/19/2025
Under 5%, checked the "5 percent or less" box, or amended by a later filing (5)
Beryl Capital Management LLC 13G/A
0% 11/14/2025
Event 9/30/2025
Caligan Partners LP 13G/A
0% 11/14/2025
Event 9/30/2025
Glazer Capital, LLC 13G/A
0% 11/13/2025
Event 9/30/2025
HBM Healthcare Investments (Cayman) Ltd. 13G/A 0% 11/14/2025
Event 9/30/2025
Paradigm Biocapital Advisors LP 13G/A
0% 11/14/2025
Event 9/30/2025

13F Holders by Quarter

Period Filers Shares, Excl. Options Value, Excl. Options
2025 Q3 2 16.4 k $78.3 k
2025 Q2 98 27.9 M $126 M
2025 Q1 105 28.8 M $128 M
2024 Q4 115 31.7 M $248 M
2024 Q3 107 25.8 M $339 M
2024 Q2 98 24.6 M $297 M
2024 Q1 98 23.4 M $381 M
2023 Q4 95 20.9 M $143 M
2023 Q3 100 19.8 M $108 M
2023 Q2 97 19.5 M $132 M
2023 Q1 88 19.3 M $96.9 M
2022 Q4 92 20.2 M $98.5 M
2022 Q3 102 23.6 M $340 M
2022 Q2 94 24.8 M $375 M
2022 Q1 90 25.3 M $301 M
2021 Q4 98 25.8 M $419 M
2021 Q3 98 26.2 M $749 M
2021 Q2 102 26.1 M $887 M
2021 Q1 119 26.5 M $805 M
2020 Q4 116 22.8 M $1.13 B
2020 Q3 108 21.4 M $823 M
2020 Q2 110 21.5 M $928 M
2020 Q1 81 20.3 M $529 M
2019 Q4 82 19.9 M $622 M
2019 Q3 66 13.3 M $347 M
2019 Q2 60 11.1 M $254 M
2019 Q1 46 8.48 M $222 M
2018 Q4 43 8.76 M $177 M
2018 Q3 39 7.75 M $206 M