A Report for IO Biotech, Inc. Common Stock, par value $0.001 per share (IOBT)

Filing manager: Novo Holdings A/S
Reporting owner: Novo Holdings A/S
Security: IO Biotech, Inc. Common Stock, par value $0.001 per share
Beneficially owned shares: 2,469,135 shares
Class ownership: 3.3%
Large-stake signal: Form
SCHEDULE 13D/A
Active or control-oriented beneficial ownership filing.
Ownership
3.3%
Beneficial ownership of this reported class.
Shares
2,469,135 shares
Shares beneficially owned as disclosed.
Event date
21 Jan 2026
Date tied to the ownership event or amendment.
Accepted by SEC
23 Jan 2026
EDGAR acceptance date.
How to read this large-stake filing
Schedule 13D/G filings focus on beneficial ownership stakes, not a full portfolio.
Compare this filing with the holder history and issuer page before treating the percentage as a current position.
Use amendments to understand whether the disclosed stake increased, decreased, or changed reporting status.
Symbol: IOBT
Shares outstanding: 74,822,273 shares
Form type: SCHEDULE 13D/A
Accepted by SEC: 23 Jan 2026, 19:05:19 UTC
Event date: 21 Jan 2026
Previous filing: 19 Aug 2025
SEC filing: View on sec.gov

Key filing fact

Novo Holdings A/S disclosed 3.3% ownership in IO Biotech, Inc. Common Stock, par value $0.001 per share (IOBT) on 21 Jan 2026.

Key facts

Novo Holdings A/S filed SCHEDULE 13D/A for IO Biotech, Inc. Common Stock, par value $0.001 per share (IOBT).
Disclosed ownership: 3.3%.
Date of event: 21 Jan 2026.

This page turns one Schedule 13D/G filing into a quick large-stake read before the raw reporting-person rows.
Use the linked SEC filing as the source of truth for ownership percentages, shares, and reporting-party details.

Backed by Schedule 13D/13G

Beneficial ownership values are sourced from the original SEC Schedule 13D/13G filing.

Reporting persons

Names, ownership percentages, voting power, signatures, titles, and CIKs as disclosed in this Schedule 13D/G filing.

Name	Ownership	Shares owned	Sole voting power	Shared voting power	Signature	Title	CIK
Novo Holdings A/S	3.3%	2,469,135	2,469,135	0	/s/ Barbara Fiorini	By Barbara Fiorini, General Counsel, Finance & Operations	0001388325

CIK / CUSIP context first

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