EX-4.1





 Exhibit 4.1 
  

	
	





 DESIGN THERAPEUTICS 
NUMBER DT SHARES 
INCORPORATED UNDER THE LAWS OF THE STATE OF DELAWARE 
CUSIP 25056L 10 3 
SEE REVERSE FOR CERTAIN DEFINITIONS AND LEGENDS 
This certifies that is the record holder of

FULLY PAID AND NONASSESSABLE SHARES OF COMMON STOCK, $0.0001 PAR VALUE PER SHARE, OF Design Therapeutics, Inc. 
transferable on the books of the Corporation in person or by duly authorized attorney upon surrender of this Certificate properly 
endorsed. This Certificate is not valid until countersigned by the Transfer Agent and registered by the Registrar. 
WITNESS the facsimile seal of the Corporation and the facsimile signatures of its duly authorized officers. 
Dated: 
PRESIDENT SECRETARY 
DESIGN THERAPEUTICS, INC. 
CORPORATE SEAL 
December 18, 2017 
DELAWARE 
COUNTERSIGNED AND REGISTERED: 
AMERICAN STOCK TRANSFER TRUST & COMPANY, LLC (BROOKLYN, NY)

TRANSFER AGENT AND REGISTRAR 
BY: AUTHORIZED SIGNATURE 












 



 
 The Corporation shall furnish without charge to each stockholder who so requests a statement of the powers, designations, preferences
and relative, participating, optional or other special rights of each class of stock of the Corporation or series thereof and the qualifications, limitations or restrictions of such preferences and/or rights. Such requests shall be made to the
Corporation’s Secretary at the principal office of the Corporation. 
KEEP THIS CERTIFICATE IN A SAFE PLACE. IF IT IS LOST, STOLEN, OR DESTROYED THE CORPORATION
WILL REQUIRE A BOND INDEMNITY AS A CONDITION TO THE ISSUANCE OF A REPLACEMENT CERTIFICATE. 
The following abbreviations, when used in the inscription on the face of
this certificate, shall be construed as though they were written out in full according to applicable laws or regulations: 
TEN COM – as tenants in common

TEN ENT– as tenants by the entireties 
JT TEN – as joint tenants
with right of survivorship and not as tenants in common 
COM PROP – as community property 
UNIF GIFT MIN ACT – Custodian 
(Cust) (Minor) 
under Uniform Gifts to Minors Act 
(State) 
UNIF TRF MIN ACT – 
Custodian (until age) 
(Cust) under Uniform Transfers 
(Minor) to Minors Act 
(State) 
Additional abbreviations may also be used though not in the above list. 
FOR VALUE RECEIVED, hereby sell(s), assign(s) and transfer(s) unto PLEASE INSERT SOCIAL SECURITY OR OTHER IDENTIFYING NUMBER OF ASSIGNEE (PLEASE PRINT OR TYPEWRITE NAME AND
ADDRESS, INCLUDING ZIP CODE, OF ASSIGNEE) shares of the capital stock represented by within Certificate, and do hereby irrevocably constitute and appoint 
attorney-in-fact to transfer the said stock on the books of the within named Corporation with full power of the substitution in the premises. 
Dated Signature(s) Guaranteed: X X 
NOTICE: THE SIGNATURE TO THIS ASSIGNMENT MUST CORRESPOND
WITH THE NAME AS WRITTEN UPON THE 
FACE OF THE CERTIFICATE IN EVERY PARTICULAR, WITHOUT ALTERATION OR ENLARGEMENT OR ANY CHANGE WHATSOEVER. 
By THE SIGNATURE(S) SHOULD BE GUARANTEED BY AN ELIGIBLE GUARANTOR INSTITUTION, (BANKS, STOCKBROKERS, SAVINGS AND LOAN ASSOCIATIONS AND CREDIT UNIONS WITH MEMBERSHIP IN AN APPROVED
SIGNATURE GUARANTEE MEDALLION PROGRAM), PURSUANT TO S.E.C. RULE 17Ad-15. GUARANTEES BY A NOTARY PUBLIC ARE NOT ACCEPTABLE. SIGNATURE GUARANTEES MUST NOT BE DATED.