DOSSIER · 13F Holders · Q4 2025
IOBT

IO BIOTECH INC

6 institutions still hold IO BIOTECH INC as of Q4 2025. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 449778109·6 13F holders·last filed Dec 31, 2025
Market cap
13F value held
$2M
visible holders
Holders
6
filers reporting
Concentration
93.20%
Novo Holdings A/S #1
top holder share
AI Holders Summary · Q4 2025

6 institutions reported IOBT in Q4 2025. Novo Holdings A/S leads at 93.2% of the visible book.

Top holders

Sorted by position value. Source: SEC EDGAR 13F-HR filings.

#HolderValueShares% port.Quarter
01
Novo Holdings A/S
CIK 0001388325
$2M2.5M0.12%Q4 2025
02
Ikarian Capital, LLC
CIK 0001778253
$81K1.4M0.01%Q1 2026
03
GSA CAPITAL PARTNERS LLP
CIK 0001362033
$20K348K0.00%Q1 2026
04
Scientech Research LLC
CIK 0002011556
$7K11K0.00%Q4 2025
05
JANE STREET GROUP, LLC
CIK 0001595888· Market maker
$3K58K0.00%Q1 2026
06
CONCOURSE FINANCIAL GROUP SECURITIES, INC.
CIK 0000752798
$00Q2 2025
Insiders at IO BIOTECH INC
Hunter HeidiElling Christian EHirth PeterCollins Helen LouiseGlaub Kathleen SeredaSmith David VZocca Mai-BrittBurkavage Brian