Exhibit 4.2

ZQ|CERT#|COY|CLS|RGSTRY|ACCT#|TRANSTYPE|RUN#|TRANS# COMMON STOCK PAR VALUE $.001 ALX ONCOLOGY HOLDINGS INC. INCORPORATED UNDER THE LAWS OF THE STATE OF DELAWARE COMMON STOCK Shares
THIS CERTIFIES
is the owner of
SEE REVERSE FOR CERTAIN DEFINITIONS
CUSIP 00166B 10 5
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
ALX Oncology Holdings 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 Bylaws, 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
GY HO COUNTERSIGNED AND REGISTERED:
FACSIMILE SIGNATURE TO COME O L
L D
O POR I
R A COMPUTERSHARE TRUST COMPANY, N.A.
C CO TE N
President N G TRANSFERâ AGENT ANDâ ^REGISTRAR,
O S I X L N A . C April 1, 2020 DEL RE
FACSIMILE SIGNATURE TO COME AWA
By
Secretary AUTHORIZEDâ ^SIGNATURE
PO BOX 505006, Louisville, KY 40233-5006
MR A SAMPLE
DESIGNATION (IF ANY)
ADD 1
ADD 2
ADD 3
ADD 4
CUSIP/IDENTIFIER XXXXXX XX X
Holder ID XXXXXXXXXX
Insurance Value 1,000,000.00 Number of Shares 123456
DTC 12345678 123456789012345
Certificate Numbers Num/No. Denom. Total
1234567890/1234567890 1 1 1 1234567890/1234567890 2 2 2 1234567890/1234567890 3 3 3 1234567890/1234567890 4 4 4 1234567890/1234567890 5 5 5 1234567890/1234567890 6 6 6
Total Transaction 7
.
ALX ONCOLOGY HOLDINGS 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 UNIFâ^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.
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.