Zenas BioPharma, Inc.

Historical 13F Holders

Symbol
ZBIO
CUSIP
98937L105
All holders as of
Q2 2026
Type
Equity
Class
COM
Reported Value, Excluding Options
Total Shares Held, Excluding Options
Total Filers

13D/G Filers

Each filer's latest filing for 98937L105 since 12/18/2024, largest first.

Filer % of Class Filed
FMR LLC 13G/A
14.3% 2/5/2026
Event 12/31/2025
InnoCare Pharma Inc. 13G/A
10.4% 9/8/2026
Event 8/26/2026
Wellington Management Group LLP 13G
10.1% 9/8/2026
Event 8/31/2026
SR One Capital Management, LLC 13D/A
7.7% 8/17/2026
Event 8/13/2026
Moulder Leon O Jr 13D
5.1% 5/5/2026
Event 4/29/2026
BlackRock, Inc. 13G 5.0% 10/27/2026
Event 9/30/2026
Under 5%, checked the "5 percent or less" box, or amended by a later filing (4)
Enavate Sciences GP, LLC 13D/A
4.9% 8/19/2026
Event 8/19/2026
Longitude Capital Partners IV, LLC 13D/A
4.9% 10/14/2025
Event 10/9/2025
Novo Holdings A/S 13G/A 4.7% 11/14/2025
Event 9/30/2025
Xencor Inc 13G/A 1.5% 11/5/2026
Event 9/30/2026

13F Holders by Quarter

Period Filers Shares, Excl. Options Value, Excl. Options
2026 Q3 55 12.4 M $335M
2026 Q2 146 61.3 M $1.55B
2026 Q1 141 57.8 M $1.14B
2025 Q4 127 42.8 M $1.55B
2025 Q3 81 34.8 M $774M
2025 Q2 74 34.1 M $330M
2025 Q1 68 32.5 M $257M
2024 Q4 66 31.7 M $260M
2024 Q3 45 24.8 M $419M