EX-4.1





 



 
 ZQ|CERT#|COY|CLS|RGSTRY|ACCT#|TRANSTYPE|RUN#|TRANS# Exhibit 4.1 
COMMON STOCK COMMON STOCK 
PO PAR VALUE $0.0001 
MR ADD ADD ADD ADD 
43 2 1 A BOX 
DESIGNATION SAMPLE Certificate Shares 
505006, Number * * 000000 ****************** 
(IF 
* * * 000000 ***************** 
ANY) ZQ00000000 
**** 000000 **************** Louisville, ERASCA, INC. ***** 000000
*************** KY ****** 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 
40233 **** 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 5006 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 
Erasca, Inc. (hereinafter called the “Company”), transferable on the books of
the Company in person or by duly Total DTC authorized attorney, upon surrender of this Certificate properly endorsed. This 
Certificate and the shares Holder
represented hereby, are issued and shall be held subject to all of the provisions of the Certificate of Incorporation, 
Number 
Certificateof Insurance ID as amended, and the By-Laws, as amended, of the Company (copies of which are on file with the Company and Value
with the Transfer Agent), to all of which each holder, by acceptance hereof, assents. This Certificate is not valid Transaction Shares CUSIP/IDENTIFIER unless countersigned and registered by the Transfer Agent and Registrar. 
Numbers 
CUSIP 29479A 10 8 
1234567890/1234567890 1234567890/1234567890 1234567890/1234567890 1234567890/1234567890 1234567890/1234567890 1234567890/1234567890 Witness the facsimile seal of the Company and
the facsimile signatures of its duly authorized officers. 
DATED DD-MMM-YYYY SCA, I
COUNTERSIGNED AND REGISTERED: 
FACSIMILE SIGNATURE TO COME A N 
R C 
E POR . 
R A COMPUTERSHARE TRUST COMPANY, N.A. 
Num/No 12345678901234512345678 CO TE 
666 555 444 333 222 111 Denom. President TRANSFER AGENT
AND REGISTRAR, 
XXXXXX 7/2/2018 
Total. 
DEL RE 
FACSIMILE SIGNATURE TO COME AWA 
7 00.1,000,000 XX 
123456 XXXXXXXXXX X By 












 



 
 ERASCA, 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. 
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. 
PLEASE INSERT SOCIAL
SECURITY OR OTHER IDENTIFYING NUMBER OF ASSIGNEE 
For value received, ____________________________hereby sell, assign and transfer unto 
(PLEASE PRINT OR TYPEWRITE NAME AND ADDRESS, INCLUDING POSTAL ZIP CODE, OF ASSIGNEE)

_______________________________________________________________________________________________________________________ Shares of the Common Stock represented by
the within Certificate, and do hereby irrevocably constitute and appoint _______________________________________________________________________________________________________________________ Attorney to transfer the said stock on the books of the
within-named Company with full power of substitution in the premises. 
Dated: __________________________________________20__________________ 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. 
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. 
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. 
176019-033 25Jun2021 12:00 If you      do not keep in contact QTA with the issuer
or     do not Page have any 99 
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.