IO Biotech (IOBT) 10-K/A 22 Mar 24 2023 FY Annual report (amended) Financial data

Cover Page

Cover Page - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Feb. 28, 2024	Jun. 30, 2023
Document Information [Line Items]
Document Type	10-K/A
Amendment Flag	true
Document Period End Date	Dec. 31, 2023
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2023
Current Fiscal Year End Date	--12-31
Entity Registrant Name	IO BIOTECH, INC.
Entity Central Index Key	0001865494
Entity File Number	001-41008
Entity Tax Identification Number	87-0909276
Entity Incorporation, State or Country Code	DE
Entity Address, Address Line One	Ole Maaløes Vej 3
Entity Address, City or Town	Copenhagen N
Entity Address, Country	DK
Entity Address, Postal Zip Code	DK-2200
City Area Code	+45
Local Phone Number	7070 2980
Title of 12(b) Security	Common stock, par value $0.001 per share
Trading Symbol	IOBT
Security Exchange Name	NASDAQ
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	true
Entity Ex Transition Period	false
ICFR Auditor Attestation Flag	false
Document Financial Statement Error Correction [Flag]	false
Entity Shell Company	false
Entity Public Float			$ 31.1
Entity Common Stock, Shares Outstanding		65,880,914
Document Annual Report	true
Document Transition Report	false
Documents Incorporated by Reference [Text Block]	Portions of the registrant’s proxy statement relating to its 2024 Annual Meeting of Stockholders have been incorporated by reference herein in response to Part III, as specifically set forth in Part III.
Amendment Description	This Amendment No. 1 on Form 10-K/A (the “Amendment”) of IO Biotech, Inc. (the “Company”) amends the Company’s Annual Report on Form 10-K for the year ended December 31, 2023, originally filed with the Securities and Exchange Commission on March 5, 2024 (the “Original Report”). This Amendment is being filed solely for the purpose of inserting the conformed signature of the current Principal Accounting Officer, which was inadvertently omitted from the Original Report. This Amendment speaks as of the original filing date of the Form 10-K, does not reflect events that may have occurred after the filing date of the Original Report, and does not modify or update in any way the Company’s financial statements or any other disclosures made in the Original Report. No other changes have been made to the Original Report. As required by Rule 12b-15 of the Securities Exchange Act of 1934, as amended, this Amendment contains new certifications by the Company’s principal executive officer and principal financial officer, which are being filed as exhibits to the Amendment. Because the Amendment includes no financial statements, the Company is not including certifications pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.