EX-4.1





 Exhibit 4.1 
  





 
 ZQ|CERT#|COY|CLS|RGSTRY|ACCT#|TRANSTYPE|RUN#|TRANS#

COMMON STOCK COMMON STOCK 
PAR VALUE $0.0001 
Certificate Shares 
Number * * 000000 ****************** 
* * * 000000 ***************** 
ZQ00000000 
**** 000000 **************** 
PLIANT THERAPEUTICS, INC. ***** 000000 *************** ******
000000 ************** 
INCORPORATED UNDER THE LAWS OF THE STATE OF DELAWARE 
**
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 **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr 
MR. Alexander.David SAMPLE Sample **** 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 XXXXXX XX X 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. Alexander David Sample **** &Mr . Alexander MRS David Sample . 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. 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**Shares****000000**Shares****00 ***ZERO-HUNDRED THOUSAND 
0000**Shares****000000**Shares****000000**Shares****000000**Shares****000000**Shares****000000**Shares****000000**Shares****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**Shares****000000 ZERO HUNDRED AND ZERO*** 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 
Pliant Therapeutics, 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 Cetificate 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 
RAPE 
FACSIMILE SIGNATURE TO COME E U COUNTERSIGNED AND REGISTERED: 
H TI 
T POR 
R A C COMPUTERSHARE TRUST COMPANY, N.A. 
T CO TE S 
N , TRANSFER-AGENT AND-REGISTRAR, President A I 
L I N 
P . C 
June 8, 2015 
DEL RE 
FACSIMILE SIGNATURE TO COME AWA 
By 
Secretary AUTHORIZED - SIGNATURE 
CUSIP/IDENTIFIER XXXXXX XX X 
Holder ID XXXXXXXXXX 
Insurance Value 1,000,000.00 Number of Shares 123456 
DTC 12345678 123456789012345 
PO BOX 505006, Louisville, KY 40233-5006 
Certificate Numbers Num/No. Denom. Total 
MR A SAMPLE 1234567890/1234567890 1 1 1 DESIGNATION
(IF ANY) 1234567890/1234567890 2 2 2 
ADD 1 
ADD 2 1234567890/1234567890 3 3 3
1234567890/1234567890 4 4 4 
ADD 3 
ADD 4 1234567890/1234567890 5 5 5
1234567890/1234567890 6 6 6 
Total Transaction 7 












  
 



 
 The IRS requires that the named transfer agent (“we”) report the cost 
basis of certain shares or units acquired after January 1, 2011. If your 
shares or units are
covered by the legislation, and you requested to sell 
or transfer the shares or units using a specific cost basis calculation 
method, then we have processed as you requested. If you did not 
specify a cost basis
calculation method, then we have defaulted to the 
first in, first out (FIFO) method. Please consult your tax advisor if you 
need additional information about cost basis. 
If you do not keep in contact with the issuer or
do not have any 
activity in your account for the time period specified by state law, 
your property may become subject to state unclaimed property 
laws and transferred to the
appropriate state. 
For value received, ____________________________hereby sell, assign and transfer unto 
Shares 
Attorney 
Dated: __________________________________________20__________________ 
Signature:
____________________________________________________________ 
Signature: ____________________________________________________________ 
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 whatever. 
PLEASE INSERT SOCIAL SECURITY OR OTHER IDENTIFYING NUMBER OF ASSIGNEE 
(PLEASE PRINT OR
TYPEWRITE NAME AND ADDRESS, INCLUDING POSTAL ZIP CODE, OF ASSIGNEE) 
of the common stock represented by the within Certificate, and do hereby irrevocably constitute
and appoint 
to transfer the said stock on the books of the within-named Company with full power of substitution in the premises. 
. 
PLIANT THERAPEUTICS, INC. 
THE COMPANY WILL FURNISH WITHOUT CHARGE TO EACH SHAREHOLDER WHO SO REQUESTS, A SUMMARY OF THE POWERS, DESIGNATIONS, 
PREFERENCES AND RELATIVE, PARTICIPATING, OPTIONAL OR OTHER SPECIAL RIGHTS OF EACH CLASS OF STOCK OF THE COMPANY AND THE 
QUALIFICATIONS, LIMITATIONS OR RESTRICTIONS OF SUCH PREFERENCES AND RIGHTS, AND THE VARIATIONS IN RIGHTS, PREFERENCES AND 
LIMITATIONS DETERMINED FOR EACH SERIES, WHICH ARE FIXED BY THE CERTIFICATE OF INCORPORATION OF THE COMPANY, AS AMENDED, AND 
THE RESOLUTIONS OF THE BOARD OF DIRECTORS OF THE COMPANY, AND THE AUTHORITY OF THE BOARD OF DIRECTORS TO DETERMINE 
VARIATIONS FOR FUTURE SERIES. SUCH REQUEST MAY BE MADE TO THE OFFICE OF THE SECRETARY OF THE COMPANY OR TO THE TRANSFER 
AGENT. THE BOARD OF DIRECTORS MAY REQUIRE THE OWNER OF A LOST OR DESTROYED STOCK CERTIFICATE, OR HIS LEGAL 
REPRESENTATIVES, TO GIVE THE COMPANY A BOND TO INDEMNIFY IT AND ITS TRANSFER AGENTS AND REGISTRARS AGAINST ANY CLAIM THAT 
MAY BE MADE AGAINST THEM ON ACCOUNT OF THE ALLEGED LOSS OR DESTRUCTION OF ANY SUCH CERTIFICATE.

Signature(s) Guaranteed: Medallion Guarantee Stamp 
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. 
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 UNIF GIFT MIN ACT - ............................................Custodian
................................................. 
(Cust) (Minor) 
TEN ENT - as
tenants by the entireties under Uniform Gifts to Minors Act ........................................................ 
(State) 
JT TEN - as joint tenants with right of survivorship UNIF TRF MIN ACT - ............................................Custodian (until age ................................)

and not as tenants in common (Cust) 
.............................under
Uniform Transfers to Minors Act ................... 
(Minor) (State)

Additional abbreviations may also be used though not in the above list.