EX-4.1





 Exhibit 4.1 
  





 
 . ZQ|CERT#|COY|CLS|RGSTRY|ACCT#|TRANSTYPE|RUN#|TRANS# COMMON STOCK COMMON STOCK PAR VALUE $0.001 Certificate Shares Number * * 0 0 0 0 0
0 * * * * * * * * * * * * * * * * * * ZQ00000000 * * * 0 0 0 0 0 0 * * * * * * * * * * * * * * * * * * * * * 0 0 0 0 0 0 * * * * * * * * * * * * * * * * IO BIOTECH, INC. * * * * * 0 0 0 0 0 0 * * * * * * * * * * * * * * * INCORPORATED UNDER THE LAWS
OF THE STATE OF DELAWARE * * * * * * 0 0 0 0 0 0 * * * * * * * * * * * * * * ** Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample SEE REVERSE
FOR CERTAIN DEFINITIONS **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David THIS CERTIFIES THAT Sample **** Mr. Alexander David Sample **** Mr.
Alexander David Sample **** r. Alexander David Sample **** r. Alexander David Sample **** Mr. Alexander David Sample **** Mr. MR. Alexander David SAMPLE ample **** Mr. Alexander David &Sample MRS. **** Mr. Alexander SAMPLE David Sample **** Mr.
Alexander & David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr Alexander David Sample **** Mr. Alexander David Sample **** CUSIP 449778 10 9 Mr. Alexander David Sample **** Mr.
Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample
**** Mr. Alexander David Sample **** Mr. Alexander MR. David Sample SAMPLE **** Mr. lexander David Sample **** &Mr. Alexander MRS. David Sample SAMPLE **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander
David Sample **** r. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample ****
Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Sample ****
Mr. Sample is the owner of **000000**Shares****000000**Shares****000000**Shares****000000**Shares****000000**Shares ****000000**Shares****000000**Shares****000000**Shares*** *000000**Shares
*000000**Shares****000000**Shares****000000**Shares****000000**Shares ****000000**Shares****000000**Shares****000000**Shares**** 000000**Shares 000000**Shares****000000**Shares****000000**Shares****000000**Shares
****000000**Shares****000000**Shares****000000**Shares****0 THIS CERTIFICATE IS TRANSFERABLE IN 00000**Shares *** 000000**Shares****000000**Shares****000000**Shares****000000**Shares****000000**Shares****000000** ZERO HUNDRED THOUSAND
hares****000000**Shares****00 0000**Shares *000000**Shares****000000**Shares****000000**Shares****000000 **Shares****000000**Shares****000000** hares****000000**Shares****000 CITIES DESIGNATED BY THE TRANSFER
000**Shares****000000**Shares****000000**Shares****000000**Shares****000000**Shares****000000**Shares****000000**Shares****000000 Shares****0000 AGENT, AVAILABLE ONLINE AT 00**Shares****000000**Shares****000000**Shares****000000**Shares
****000000**Shares****000000**Shares****000000**Shares****000000 Shares****00000 0**Shares****000000**Shares****000000**Shares****000000**Shares ****000000**Shares****000000**Shares****000000**Shares****000000 ZERO HUNDRED AND ZERO***
Shares****000000 www.computershare.com **Shares****000000**Shares****000000**Shares****000000**Shares****000000**Shares****000000**Shares****000000**Shares****000000 Shares****000000* *Shares****000000**Shares****000000**Shares****000000**Shares
****000000**Shares****000000**Shares****000000**Shares****000000**Shares****000000** Shares****000000**Shares****000000**Shares****000000**Shares ****000000**Shares****000000**Shares****000000**Shares****000000**Shares****000000**S FULLY-PAID AND NON-ASSESSABLE SHARES OF COMMON STOCK OF IO Biotech, Inc. (hereinafter called the “Company”), transferable on the books of the Company in person or by duly authorized attorney, upon surrender of this
Certificate properly endorsed. This Certificate and the shares represented hereby, are issued and shall be held subject to all of the provisions of the Certificate of Incorporation, as amended, and the
By-Laws, as amended, of the Company (copies of which are on file with the Company and with the Transfer Agent), to all of which each holder, by acceptance hereof, assents. This Certificate is not valid unless
countersigned and registered by the Transfer Agent and Registrar. Witness the facsimile seal of the Company and the facsimile signatures of its duly authorized officers. DATED
DD-MMM-YYYY FACSIMILE SIGNATURE TO COME I O TECH, I COUNTERSIGNED AND REGISTERED: B RPORA N COMPUTERSHARE TRUST COMPANY, N.A. President I OC O T E C . TRANSFERAGENT
ANDREGISTRAR, 5/25/2021 FACSIMILE SIGNATURE TO COME DELAW A R E Secretary By
01:06                QTA                Page 35
AUTHORIZED^SIGNATURE    CUSIP/IDENTIFIER XXXXXX XX X Holder ID XXXXXXXXXX Insurance Value 00.1,000,000 Number of Shares 123456 DTC 12345678901234512345678    PO BOX 505006, Louisville, KY 40233-5006
Certificate Numbers Num/No Denom. Total. MR DESIGNATION A SAMPLE (IF ANY) 1234567890/12345678901234567890/1234567890 121212 ADD 1 1234567890/12345678901234567890/1234567890 343434 ADD 2 ADD 3 ADD 4 1234567890/12345678901234567890/1234567890 565656
Total Transaction 7