Document:

EX-10.2

 Exhibit 10.2 

ALX ONCOLOGY HOLDINGS INC. 

AMENDED AND RESTATED 2020 EQUITY INCENTIVE PLAN 

1.    Purposes of the Plan. The purposes of this Plan are: 

 

	 	•	 	 to attract and retain the best available personnel for positions of substantial responsibility,

  

	 	•	 	 to provide additional incentive to Employees, Directors and Consultants, and 

 

	 	•	 	 to promote the success of the Company’s business. 

The Plan permits the grant of Incentive Stock Options, Nonstatutory Stock Options, Stock Appreciation Rights, Restricted Stock, Restricted
Stock Units, Performance Units and Performance Shares. 
 2.    Definitions. As used herein, the following
definitions will apply: 
 (a)    “Administrator” means the Board or any of its Committees as will be
administering the Plan, in accordance with Section 4 of the Plan. 
 (b)    “Applicable Laws”
means the legal and regulatory requirements relating to the administration of equity-based awards, including but not limited to the related issuance of shares of Common Stock, including but not limited to, under U.S. federal and state corporate
laws, U.S. federal and state securities laws, the Code, any stock exchange or quotation system on which the Common Stock is listed or quoted and the applicable laws of any non-U.S. country or jurisdiction
where Awards are, or will be, granted under the Plan. 
 (c)    “Award” means, individually or
collectively, a grant under the Plan of Options, Stock Appreciation Rights, Restricted Stock, Restricted Stock Units, Performance Units or Performance Shares. 

(d)    “Award Agreement” means the written or electronic agreement setting forth the terms and provisions
applicable to each Award granted under the Plan. The Award Agreement is subject to the terms and conditions of the Plan. 

(e)    “Board” means the Board of Directors of the Company. 

(f)    “Cause” means the definition of such term contained in Participant’s employment agreement
with the Company (and any of its Parent or Subsidiaries) or, if none, a termination of Participant’s employment with the Company (and any of its Parent or Subsidiaries) because of (a) Participant’s unauthorized misuse of any the trade
secrets or proprietary information of the Company (or any of its Parent or Subsidiaries), (b) Participant’s conviction of or plea of nolo contendere to a felony or a crime involving moral turpitude (or equivalent under Applicable Laws), (c)
Participant’s committing an act of fraud against the Company (or any of its Parent or Subsidiaries) or (d) Participant’s gross negligence or willful misconduct in the performance of his or her duties that has had or will have a
material adverse effect on the reputation or business of the Company (or any of its Parent or Subsidiaries). 

 (g)    “Change in Control” means the occurrence of any
of the following events: 
 (i)    Change in Ownership of the Company. A change in the ownership of the
Company which occurs on the date that any one person, or more than one person acting as a group (“Person”), acquires ownership of the stock of the Company that, together with the stock held by such Person, constitutes more
than fifty percent (50%) of the total voting power of the stock of the Company; provided, however, that for purposes of this subsection, the acquisition of additional stock by any one Person, who is considered to own more than fifty percent
(50%) of the total voting power of the stock of the Company will not be considered a Change in Control; provided, further, that any change in the ownership of the stock of the Company as a result of a private financing of the Company that is
approved by the Board also will not be considered a Change in Control. Further, if the stockholders of the Company immediately before such change in ownership continue to retain immediately after the change in ownership, in substantially the same
proportions as their ownership of shares of the Company’s voting stock immediately prior to the change in ownership, direct or indirect beneficial ownership of fifty percent (50%) or more of the total voting power of the stock of the Company or
of the ultimate parent entity of the Company, such event shall not be considered a Change in Control under this subsection (i). For this purpose, indirect beneficial ownership shall include, without limitation, an interest resulting from ownership
of the voting securities of one or more corporations or other business entities which own the Company, as the case may be, either directly or through one or more subsidiary corporations or other business entities; or 

(ii)    Change in Effective Control of the Company. If the Company has a class of securities registered pursuant
to Section 12 of the Exchange Act, a change in the effective control of the Company which occurs on the date that a majority of members of the Board is replaced during any twelve (12) month period by Directors whose appointment or election
is not endorsed by a majority of the members of the Board prior to the date of the appointment or election. For purposes of this subsection (ii), if any Person is considered to be in effective control of the Company, the acquisition of additional
control of the Company by the same Person will not be considered a Change in Control; or 
 (iii)    Change in
Ownership of a Substantial Portion of the Company’s Assets. A change in the ownership of a substantial portion of the Company’s assets which occurs on the date that any Person acquires (or has acquired during the twelve
(12) month period ending on the date of the most recent acquisition by such Person or Persons) assets from the Company that have a total gross fair market value equal to or more than fifty percent (50%) of the total gross fair market
value of all of the assets of the Company immediately prior to such acquisition or acquisitions; provided, however, that for purposes of this subsection (iii), the following will not constitute a change in the ownership of a substantial portion of
the Company’s assets: (A) a transfer to an entity that is controlled by the Company’s stockholders immediately after the transfer, or (B) a transfer of assets by the Company to: (1) a stockholder of the Company (immediately
before the asset transfer) in exchange for or with respect to the Company’s stock, (2) an entity, fifty percent (50%) or more of the total value or voting power of which is owned, directly or indirectly, by the Company,
(3) a Person, that owns, directly or indirectly, fifty percent (50%) or more of the total value or voting power of all the outstanding stock of the Company, or (4) an entity, at least fifty percent (50%) of the total value or
voting power of 

  
 -2- 

 
which is owned, directly or indirectly, by a Person described in this subsection (iii)(B)(3). For purposes of this subsection (iii), gross fair market value means the value of the assets of the
Company, or the value of the assets being disposed of, determined without regard to any liabilities associated with such assets. 
 For
purposes of this Section 2(g), persons will be considered to be acting as a group if they are owners of a corporation that enters into a merger, consolidation, purchase or acquisition of stock, or similar business transaction with the Company.

 Notwithstanding the foregoing, a transaction will not be deemed a Change in Control unless the transaction qualifies as a change in
control event within the meaning of Code Section 409A, as it has been and may be amended from time to time, and any proposed or final Treasury Regulations and Internal Revenue Service guidance that has been promulgated or may be promulgated
thereunder from time to time. 
 Further and for the avoidance of doubt, a transaction will not constitute a Change in Control if:
(i) its sole purpose is to change the jurisdiction of the Company’s incorporation, or (ii) its sole purpose is to create a holding company that will be owned in substantially the same proportions by the persons who held the
Company’s securities immediately before such transaction. 
 (h)    “Code” means the Internal
Revenue Code of 1986, as amended. Reference to a specific section of the Code or regulation thereunder shall include such section or regulation, any valid regulation promulgated under such section, and any comparable provision of any future
legislation or regulation amending, supplementing or superseding such section or regulation. 

(i)    “Committee” means a committee of Directors or of other individuals satisfying Applicable Laws
appointed by the Board, or by a duly authorized committee of the Board, in accordance with Section 4 hereof. 

(j)    “Common Stock” means the common stock of the Company. 

(k)    “Company” means ALX Oncology Holdings Inc., a Delaware corporation, or any successor
thereto. 
 (l)    “Consultant” means any natural person, including an advisor, engaged by the Company
or any of its Parent or Subsidiaries to render bona fide services to such entity, provided the services (i) are not in connection with the offer or sale of securities in a capital-raising transaction, and (ii) do not directly promote or
maintain a market for the Company’s securities, in each case, within the meaning of Form S-8 promulgated under the Securities Act, and provided further, that a Consultant will include only those persons
to whom the issuance of Shares may be registered under Form S-8 promulgated under the Securities Act. 

(m)    “Director” means a member of the Board. 

(n)    “Disability” means total and permanent disability as defined in Code Section 22(e)(3),
provided that in the case of Awards other than Incentive Stock Options, the Administrator in its discretion may determine whether a permanent and total disability exists in accordance with uniform and
non-discriminatory standards adopted by the Administrator from time to time. 

  
 -3- 

 (o)    “Employee” means any person, including Officers
and Directors, employed by the Company or any Parent or Subsidiary of the Company. Neither service as a Director nor payment of a director’s fee by the Company will be sufficient to constitute “employment” by the Company. 

(p)    “Exchange Act” means the U.S. Securities Exchange Act of 1934, as amended. 

(q)    “Exchange Program” means a program under which (i) outstanding Awards are surrendered or
cancelled in exchange for awards of the same type (which may have higher or lower exercise prices and different terms), awards of a different type, and/or cash, (ii) Participants would have the opportunity to transfer any outstanding Awards to
a financial institution or other person or entity selected by the Administrator, and/or (iii) the exercise price of an outstanding Award is reduced or increased. The Administrator will determine the terms and conditions of any Exchange Program
in its sole discretion. 
 (r)    “Fair Market Value” means, as of any date, the value of Common Stock
determined as follows: 
 (i)    If the Common Stock is listed on any established stock exchange or a national market
system, including without limitation the New York Stock Exchange or the Nasdaq Global Select Market, the Nasdaq Global Market or the Nasdaq Capital Market of The Nasdaq Stock Market, its Fair Market Value will be the closing sales price for such
stock (or, if no closing sales price was reported on that date, as applicable, on the last Trading Day such closing sales price was reported) as quoted on such exchange or system on the day of determination, as reported in The Wall Street
Journal or such other source as the Administrator deems reliable; 
 (ii)    If the Common Stock is regularly
quoted by a recognized securities dealer but selling prices are not reported, the Fair Market Value of a Share will be the mean between the high bid and low asked prices for the Common Stock on the day of determination (or, if no bids and asks were
reported on that date, as applicable, on the last Trading Day such bids and asks were reported), as reported in The Wall Street Journal or such other source as the Administrator deems reliable; 

(iii)    For purposes of any Awards granted on the Registration Date, the Fair Market Value will be the initial price to
the public as set forth in the final prospectus included within the registration statement on Form S-1 filed with the Securities and Exchange Commission for the initial public offering of the Common Stock; or

 (iv)    In the absence of an established market for the Common Stock, the Fair Market Value will be determined in
good faith by the Administrator. 
 (s)    “Fiscal Year” means the fiscal year of the Company. 

(t)    “Incentive Stock Option” means an Option that by its terms qualifies and is otherwise intended to
qualify as an incentive stock option within the meaning of Code Section 422 and the regulations promulgated thereunder. 

  
 -4- 

 (u)    “Inside Director” means a Director who is an
Employee. 
 (v)    “Nonstatutory Stock Option” means an Option that by its terms does not qualify or
is not intended to qualify as an Incentive Stock Option. 
 (w)    “Officer” means a person who is an
officer of the Company within the meaning of Section 16 of the Exchange Act and the rules and regulations promulgated thereunder. 

(x)    “Option” means a stock option granted pursuant to the Plan. 

(y)    “Outside Director” means a Director who is not an Employee. 

(z)    “Parent” means a “parent corporation,” whether now or hereafter existing, as defined in
Code Section 424(e). 
 (aa)    “Participant” means the holder of an outstanding Award. 

(bb)    “Performance Share” means an Award denominated in Shares which may be earned in whole or in part
upon attainment of performance goals or other vesting criteria as the Administrator may determine pursuant to Section 10. 

(cc)    “Performance Unit” means an Award which may be earned in whole or in part upon attainment of
performance goals or other vesting criteria as the Administrator may determine and which may be settled for cash, Shares or other securities or a combination of the foregoing pursuant to Section 10. 

(dd)    “Period of Restriction” means the period (if any) during which the transfer of Shares of
Restricted Stock are subject to restrictions and therefore, the Shares are subject to a substantial risk of forfeiture. Such restrictions may be based on the passage of time, the achievement of target levels of performance, or the occurrence of
other events as determined by the Administrator. 
 (ee)    “Plan” means this 2020 Equity Incentive
Plan, as may be amended from time to time, and most recently amended and restated as the Amended and Restated 2020 Equity Incentive Plan. 

(ff)    “Registration Date” means the effective date of the first registration statement that is filed by
the Company and declared effective pursuant to Section 12(b) of the Exchange Act, with respect to any class of the Company’s securities. 

(gg)    “Restricted Stock” means Shares issued pursuant to an Award of Restricted Stock under
Section 8 of the Plan, or issued pursuant to the early exercise of an Option. 
 (hh)    “Restricted Stock
Unit” means a bookkeeping entry representing an amount equal to the Fair Market Value of one Share, granted pursuant to Section 9. Each Restricted Stock Unit represents an unfunded and unsecured obligation of the Company. 

(ii)    “Rule 16b-3” means Rule 16b-3 of the Exchange Act or any successor to Rule 16b-3, as in effect when discretion is being exercised with respect to the Plan. 

  
 -5- 

 (jj)    “Section 16b” means
Section 16(b) of the Exchange Act. 
 (kk)    “Section 409A” means Code
Section 409A and the Treasury Regulations and guidance thereunder, and any applicable state law equivalent, as each may be promulgated, amended or modified from time to time. 

(ll)    “Securities Act” means the U.S. Securities Act of 1933, as amended. 

(mm)    “Service Provider” means an Employee, Director or Consultant. 

(nn)    “Share” means a share of the Common Stock, as adjusted in accordance with Section 13 of the
Plan. 
 (oo)    “Stock Appreciation Right” means an Award, granted alone or in connection with an
Option, that pursuant to Section 7 is designated as a Stock Appreciation Right. 

(pp)    “Subsidiary” means a “subsidiary corporation,” whether now or hereafter existing, as
defined in Code Section 424(f). 
 (qq)    “Trading Day” means a day that the primary stock
exchange, national market system, or other trading platform, as applicable, upon which the Common Stock is listed (or otherwise trades regularly, as determined by the Administrator, in its sole discretion) is open for trading. 

3.    Stock Subject to the Plan. 

(a)    Stock Subject to the Plan. Subject to the provisions of Section 13 of the Plan and the automatic
increase set forth in Section 3(b), the maximum aggregate number of Shares that may be subject to Awards and sold under the Plan is 7,874,862 Shares. In addition, Shares may become available for issuance under Sections 3(b)
and 3(c). The Shares may be authorized but unissued, or reacquired Common Stock. 
 (b)    Automatic
Share Reserve Increase. Subject to the provisions of Sections 15(a) and 19, the number of Shares available for issuance under the Plan will be increased on the first day of each Fiscal Year beginning with the 2021 Fiscal Year, in an
amount equal to the least of (i) 4,000,000 Shares, (ii) four percent (4%) of the outstanding Shares on the last day of the immediately preceding Fiscal Year, or (iii) such number of Shares determined by the Board no later than
the last day of the immediately preceding Fiscal Year. 
 (c)    Lapsed Awards. If an Award expires or becomes
unexercisable without having been exercised in full, is surrendered pursuant to an Exchange Program, or, with respect to Restricted Stock, Restricted Stock Units, Performance Units or Performance Shares is forfeited to or repurchased by the Company
due to the failure to vest, the unpurchased Shares (or for Awards other than Options or Stock Appreciation Rights the forfeited or repurchased Shares) which were subject thereto will become available for future grant or sale under the Plan (unless
the Plan has terminated). With respect to Stock Appreciation Rights, only Shares actually issued pursuant to a Stock Appreciation Right will cease to be available under the Plan; all remaining Shares under Stock Appreciation Rights will remain
available for future grant or sale under the Plan (unless the Plan has terminated). Shares that have actually been issued under the Plan under any Award will not be returned to the Plan and will not 

  
 -6- 

 
become available for future distribution under the Plan; provided, however, that if Shares issued pursuant to Awards of Restricted Stock, Restricted Stock Units, Performance Shares or Performance
Units are repurchased by the Company or are forfeited to the Company due to the failure to vest, such Shares will become available for future grant under the Plan. Shares used to pay the exercise price of an Award or to satisfy the tax liabilities
or withholdings related to an Award will become available for future grant or sale under the Plan. To the extent an Award under the Plan is paid out in cash rather than Shares, such cash payment will not result in reducing the number of Shares
available for issuance under the Plan. Notwithstanding the foregoing and, subject to adjustment as provided in Section 13, the maximum number of Shares that may be issued upon the exercise of Incentive Stock Options will equal the aggregate
Share number stated in Section 3(a), plus, to the extent allowable under Code Section 422 and the Treasury Regulations promulgated thereunder, any Shares that become available for issuance under the Plan pursuant to Sections 3(b) and 3(c).

 (d)    Share Reserve. The Company, during the term of this Plan, will at all times reserve and keep available
such number of Shares as will be sufficient to satisfy the requirements of the Plan. 
 4.    Administration of the
Plan. 
 (a)    Procedure. 

(i)    Multiple Administrative Bodies. Different Committees with respect to different groups of Service Providers
may administer the Plan. 
 (ii)    Rule 16b-3. To the extent
desirable to qualify transactions hereunder as exempt under Rule 16b-3, the transactions contemplated hereunder will be structured to satisfy the requirements for exemption under Rule 16b-3. 
 (iii)    Other Administration. Other than as provided
above, the Plan will be administered by (A) the Board or (B) a Committee, which Committee will be constituted to satisfy Applicable Laws. 

(b)    Powers of the Administrator. Subject to the provisions of the Plan, and in the case of a Committee, subject
to the specific duties delegated by the Board to such Committee, the Administrator will have the authority, in its discretion: 

(i)    to determine the Fair Market Value; 

(ii)    to select the Service Providers to whom Awards may be granted hereunder; 

(iii)    to determine the number of Shares to be covered by each Award granted hereunder; 

(iv)    to approve forms of Award Agreements for use under the Plan; 

  
 -7- 

 (v)    to determine the terms and conditions, not inconsistent with the
terms of the Plan, of any Award granted hereunder. Such terms and conditions include, but are not limited to, the exercise price, the time or times when Awards may be exercised (which may be based on performance criteria), any vesting acceleration
or waiver of forfeiture restrictions, and any restriction or limitation regarding any Award or the Shares relating thereto (including but not limited to, temporarily suspending the exercisability of an Award if the Administrator deems such
suspension to be necessary or appropriate for administrative purposes or to comply with Applicable Laws, provided that such suspension must be lifted prior to the expiration of the maximum term and post-termination exercisability period of an
Award), based in each case on such factors as the Administrator will determine; 
 (vi)    to institute and determine
the terms and conditions of an Exchange Program, including, subject to Section 18(c), to unilaterally implement an Exchange Program without the consent of the applicable Award holder; 

(vii)    to construe and interpret the terms of the Plan and Awards granted pursuant to the Plan; 

(viii)    to prescribe, amend and rescind rules and regulations relating to the Plan, including rules and regulations
relating to sub-plans established for the purpose of satisfying applicable non-U.S. laws or for qualifying for favorable tax treatment under applicable non-U.S. laws; 
 (ix)    to modify or amend each Award (subject to
Section 18(c) of the Plan), including but not limited to the discretionary authority to extend the post-termination exercisability period of Awards and to extend the maximum term of an Option or Stock Appreciation Right (subject to Sections
6(d) and 7(e)); 
 (x)    to allow Participants to satisfy withholding tax obligations in a manner prescribed in
Section 14; 
 (xi)    to authorize any person to execute on behalf of the Company any instrument required to
effect the grant of an Award previously granted by the Administrator; 
 (xii)    to allow a Participant to defer the
receipt of the payment of cash or the delivery of Shares that otherwise would be due to such Participant under an Award; and 

(xiii)    to make all other determinations deemed necessary or advisable for administering the Plan. 

(c)    Effect of Administrator’s Decision. The Administrator’s decisions,
determinations and interpretations will be final and binding on all Participants and any other holders of Awards and will be given the maximum deference permitted by Applicable Laws. 

5.    Eligibility. Nonstatutory Stock Options, Stock Appreciation Rights, Restricted Stock, Restricted Stock Units,
Performance Shares and Performance Units may be granted to Service Providers. Incentive Stock Options may be granted only to Employees. 

  
 -8- 

 6.    Stock Options. 

(a)    Grant of Options. Subject to the terms and provisions of the Plan, the Administrator, at any time and from
time to time, may grant Options to Service Providers in such amounts as the Administrator, in its sole discretion, will determine. 

(b)    Option Agreement. Each Award of an Option will be evidenced by an Award Agreement that will specify the
exercise price, the term of the Option, the number of Shares subject to the Option, the exercise restrictions, if any, applicable to the Option, and such other terms and conditions as the Administrator, in its sole discretion, will determine. 

(c)    Limitations. Each Option will be designated in the Award Agreement as either an Incentive Stock Option or a
Nonstatutory Stock Option. Notwithstanding such designation, however, to the extent that the aggregate Fair Market Value of the Shares with respect to which Incentive Stock Options are exercisable for the first time by the Participant during any
calendar year (under all plans of the Company and any Parent or Subsidiary) exceeds one hundred thousand dollars ($100,000), such Options will be treated as Nonstatutory Stock Options. For purposes of this Section 6(c), Incentive Stock Options
will be taken into account in the order in which they were granted, the Fair Market Value of the Shares will be determined as of the time the Option with respect to such Shares is granted, and calculation will be performed in accordance with Code
Section 422 and Treasury Regulations promulgated thereunder. 
 (d)    Term of Option. The term of each
Option will be stated in the Award Agreement; provided, however, that the term will be no more than ten (10) years from the date of grant thereof. In the case of an Incentive Stock Option granted to a Participant who, at the time the Incentive
Stock Option is granted, owns stock representing more than ten percent (10%) of the total combined voting power of all classes of stock of the Company or any Parent or Subsidiary, the term of the Incentive Stock Option will be five (5) years
from the date of grant or such shorter term as may be provided in the Award Agreement. 
 (e)    Option Exercise
Price and Consideration. 
 (i)    Exercise Price. The per Share exercise price for the Shares to be issued
pursuant to the exercise of an Option will be determined by the Administrator, but will be no less than one hundred percent (100%) of the Fair Market Value per Share on the date of grant. In addition, in the case of an Incentive Stock Option granted
to an Employee who owns stock representing more than ten percent (10%) of the voting power of all classes of stock of the Company or any Parent or Subsidiary, the per Share exercise price will be no less than one hundred ten percent (110%) of the
Fair Market Value per Share on the date of grant. Notwithstanding the foregoing provisions of this Section 6(e)(i), Options may be granted with a per Share exercise price of less than one hundred percent (100%) of the Fair Market Value per
Share on the date of grant pursuant to a transaction described in, and in a manner consistent with, Code Section 424(a). 

(ii)    Waiting Period and Exercise Dates. At the time an Option is granted, the Administrator will fix the period
within which the Option may be exercised and will determine any conditions that must be satisfied before the Option may be exercised. 

  
 -9- 

 (iii)    Form of Consideration. The Administrator will determine
the acceptable form of consideration for exercising an Option, including the method of payment. In the case of an Incentive Stock Option, the Administrator will determine the acceptable form of consideration at the time of grant. Such consideration
may consist entirely of: (1) cash (including cash equivalents); (2) check; (3) promissory note, to the extent permitted by Applicable Laws, (4) other Shares, provided that such Shares have a Fair Market Value on the date of surrender
equal to the aggregate exercise price of the Shares as to which such Option will be exercised and provided further that accepting such Shares will not result in any adverse accounting consequences to the Company, as the Administrator determines in
its sole discretion; (5) consideration received by the Company under a cashless exercise program (whether through a broker or otherwise) implemented by the Company in connection with the Plan; (6) by net exercise; (7) such other
consideration and method of payment for the issuance of Shares to the extent permitted by Applicable Laws, or (8) any combination of the foregoing methods of payment. In making its determination as to the type of consideration to accept, the
Administrator will consider if acceptance of such consideration may be reasonably expected to benefit the Company. 

(f)    Exercise of Option. 

(i)    Procedure for Exercise; Rights as a Stockholder. Any Option granted hereunder will be exercisable according
to the terms of the Plan and at such times and under such conditions as determined by the Administrator and set forth in the Award Agreement. An Option may not be exercised for a fraction of a Share. 

An Option will be deemed exercised when the Company receives: (i) notice of exercise (in such form as the Administrator may specify from
time to time) from the person entitled to exercise the Option, and (ii) full payment for the Shares with respect to which the Option is exercised (together with applicable tax withholding). Full payment may consist of any consideration and
method of payment authorized by the Administrator and permitted by the Award Agreement and the Plan. Shares issued upon exercise of an Option will be issued in the name of the Participant or, if requested by the Participant, in the name of the
Participant and his or her spouse. Until the Shares are issued (as evidenced by the appropriate entry on the books of the Company or of a duly authorized transfer agent of the Company), no right to vote or receive dividends or any other rights as a
stockholder will exist with respect to the Shares subject to an Option, notwithstanding the exercise of the Option. The Company will issue (or cause to be issued) such Shares promptly after the Option is exercised. No adjustment will be made for a
dividend or other right for which the record date is prior to the date the Shares are issued, except as provided in Section 13 of the Plan. 

Exercising an Option in any manner will decrease the number of Shares thereafter available, both for purposes of the Plan and for sale under
the Option, by the number of Shares as to which the Option is exercised. 
 (ii)    Termination of Relationship as a
Service Provider. If a Participant ceases to be a Service Provider, other than upon the Participant’s termination as the result of the Participant’s death or Disability, the Participant may exercise his or her Option, to the extent
that the Option is vested on the date of termination, within ninety (90) days of termination, or such shorter or longer period of time, as is specified in the Award Agreement or in writing by the Administrator, but in each case, in no event
later than the expiration of the term of such Option as set forth in the Award 

  
 -10- 

 
Agreement. Unless otherwise provided by the Administrator, if on the date of termination the Participant is not vested as to his or her entire Option, the Shares covered by the unvested portion
of the Option will revert to the Plan. If after termination the Participant does not exercise his or her Option within the time specified by the Administrator, the Option will terminate, and the Shares covered by such Option will revert to the Plan.

 (iii)    Disability of Participant. If a Participant ceases to be a Service Provider as a result of the
Participant’s Disability, the Participant may exercise his or her Option within six (6) months of termination, or such longer period of time as is specified in the Award Agreement or in writing by the Administrator (but in no event later
than the expiration of the term of such Option as set forth in the Award Agreement) to the extent the Option is vested on the date of termination. Unless otherwise provided by the Administrator, if on the date of termination the Participant is not
vested as to his or her entire Option, the Shares covered by the unvested portion of the Option will revert to the Plan. If after termination the Participant does not exercise his or her Option within the time specified herein, the Option will
terminate, and the Shares covered by such Option will revert to the Plan. 
 (iv)    Death of
Participant. If a Participant dies while a Service Provider, the Option may be exercised within six (6) months following the Participant’s death, or within such longer period of time as is specified in the Award Agreement or in writing
by the Administrator (but in no event later than the expiration of the term of such Option as set forth in the Award Agreement) to the extent that the Option is vested on the date of death, by the Participant’s designated beneficiary, provided
such beneficiary has been designated prior to the Participant’s death in a form (if any) acceptable to the Administrator. If no such beneficiary has been designated by the Participant, then such Option may be exercised by the personal
representative of the Participant’s estate or by the person(s) to whom the Option is transferred pursuant to the Participant’s will or in accordance with the laws of descent and distribution (each, a “Legal Representative”). If
the Option is exercised pursuant to this Section 6(f)(iv), Participant’s designated beneficiary or Legal Representative shall be subject to the terms of this Plan and the Award Agreement, including but not limited to the restrictions on
transferability and forfeitability applicable to the Service Provider. Unless otherwise provided by the Administrator, if at the time of death Participant is not vested as to his or her entire Option, the Shares covered by the unvested portion of
the Option will immediately revert to the Plan. If the Option is not so exercised within the time specified herein, the Option will terminate, and the Shares covered by such Option will revert to the Plan. 

(v)    Tolling Expiration. A Participant’s Award Agreement may also provide that: 

(1)    if the exercise of the Option following the cessation of Participant’s status as a Service Provider (other
than upon the Participant’s death or Disability) would result in liability under Section 16(b), then the Option will terminate on the earlier of (A) the expiration of the term of the Option set forth in the Award Agreement, or
(B) the tenth (10th) day after the last date on which such exercise would result in liability under Section 16(b); or 

(2)    if the exercise of the Option following the cessation of the Participant’s status as a Service Provider
(other than upon the Participant’s death or Disability) would be prohibited at any time solely because the issuance of Shares would violate the registration requirements under the Securities Act, then the Option will terminate on the earlier of
(A) the expiration of the term of the Option or (B) the expiration of a period of thirty (30) days after the cessation of the Participant’s status as a Service Provider during which the exercise of the Option would not be in
violation of such registration requirements. 

  
 -11- 

 7.    Stock Appreciation Rights. 

(a)    Grant of Stock Appreciation Rights. Subject to the terms and conditions of the Plan, a Stock Appreciation
Right may be granted to Service Providers at any time and from time to time as will be determined by the Administrator, in its sole discretion. 

(b)    Number of Shares. The Administrator will have complete discretion to determine the number of Shares subject
to any Award of Stock Appreciation Rights. 
 (c)    Exercise Price and Other Terms. The per Share exercise price
for the Shares that will determine the amount of the payment to be received upon exercise of a Stock Appreciation Right as set forth in Section 7(f) will be determined by the Administrator and will be no less than one hundred percent (100%) of
the Fair Market Value per Share on the date of grant. Otherwise, the Administrator, subject to the provisions of the Plan, will have complete discretion to determine the terms and conditions of Stock Appreciation Rights granted under the Plan. 

(d)    Stock Appreciation Right Agreement. Each Stock Appreciation Right grant will be evidenced by an Award
Agreement that will specify the exercise price, the term of the Stock Appreciation Right, the conditions of exercise, and such other terms and conditions as the Administrator, in its sole discretion, will determine. 

(e)    Expiration of Stock Appreciation Rights. A Stock Appreciation Right granted under the Plan will expire upon
the date determined by the Administrator, in its sole discretion, and set forth in the Award Agreement. Notwithstanding the foregoing, the rules of Section 6(d) relating to the maximum term and Section 6(f) relating to exercise also will
apply to Stock Appreciation Rights. 
 (f)    Payment of Stock Appreciation Right Amount. Upon exercise of a
Stock Appreciation Right, a Participant will be entitled to receive payment from the Company in an amount determined by multiplying: 

(i)    The difference between the Fair Market Value of a Share on the date of exercise over the exercise price; times 

(ii)    The number of Shares with respect to which the Stock Appreciation Right is exercised. 

At the discretion of the Administrator, the payment upon Stock Appreciation Right exercise may be in cash, in Shares of equivalent value, or
in some combination thereof. 
 8.    Restricted Stock. 

(a)    Grant of Restricted Stock. Subject to the terms and provisions of the Plan, the Administrator, at any time
and from time to time, may grant Shares of Restricted Stock to Service Providers in such amounts as the Administrator, in its sole discretion, will determine. 

  
 -12- 

 (b)    Restricted Stock Agreement. Each Award of Restricted Stock
will be evidenced by an Award Agreement that will specify the Period of Restriction (if any), the number of Shares granted, and such other terms and conditions as the Administrator, in its sole discretion, will determine. Unless the Administrator
determines otherwise, the Company as escrow agent will hold Shares of Restricted Stock until the restrictions on such Shares have lapsed. 

(c)    Transferability. Except as provided in this Section 8 or as the Administrator determines, Shares of
Restricted Stock may not be sold, transferred, pledged, assigned, or otherwise alienated or hypothecated until the end of the applicable Period of Restriction. 

(d)    Other Restrictions. The Administrator, in its sole discretion, may impose such other restrictions on Shares
of Restricted Stock as it may deem advisable or appropriate. 
 (e)    Removal of Restrictions. Except as
otherwise provided in this Section 8, Shares of Restricted Stock covered by each Restricted Stock grant made under the Plan will be released from escrow as soon as practicable after the last day of the Period of Restriction or at such other
time as the Administrator may determine. The Administrator, in its discretion, may accelerate the time at which any restrictions will lapse or be removed. 

(f)    Voting Rights. During the Period of Restriction, Service Providers holding Shares of Restricted Stock
granted hereunder may exercise full voting rights with respect to those Shares, unless the Administrator determines otherwise. 

(g)    Dividends and Other Distributions. During the Period of Restriction, Service Providers holding Shares of
Restricted Stock will be entitled to receive all dividends and other distributions paid with respect to such Shares, unless the Administrator provides otherwise. If any such dividends or distributions are paid in Shares, the Shares will be subject
to the same restrictions on transferability and forfeitability as the Shares of Restricted Stock with respect to which they were paid. 

(h)    Return of Restricted Stock to Company. On the date set forth in the Award Agreement, the Restricted Stock
for which restrictions have not lapsed will revert to the Company and again will become available for grant under the Plan. 

9.    Restricted Stock Units. 

(a)    Grant. Restricted Stock Units may be granted at any time and from time to time as determined by the
Administrator. After the Administrator determines that it will grant Restricted Stock Units, it will advise the Participant in an Award Agreement of the terms, conditions, and restrictions related to the grant, including the number of Restricted
Stock Units. 
 (b)    Vesting Criteria and Other Terms. The Administrator will set vesting criteria in its
discretion, which, depending on the extent to which the criteria are met, will determine the number of Restricted Stock Units that will be paid out to the Participant. The Administrator may set vesting criteria based upon the achievement of
Company-wide, divisional, business unit, or individual goals (including, but not limited to, continued employment or service), applicable federal or state securities laws or any other basis determined by the Administrator in its discretion. 

  
 -13- 

 (c)    Earning Restricted Stock Units. Upon meeting the
applicable vesting criteria, the Participant will be entitled to receive a payout as determined by the Administrator. Notwithstanding the foregoing, at any time after the grant of Restricted Stock Units, the Administrator, in its sole discretion,
may reduce or waive any vesting criteria that must be met to receive a payout. 
 (d)    Form and Timing of
Payment. Payment of earned Restricted Stock Units will be made as soon as practicable after the date(s) determined by the Administrator and set forth in the Award Agreement. The Administrator, in its sole discretion, may settle earned Restricted
Stock Units in cash, Shares, or a combination of both. 
 (e)    Cancellation. On the date set forth in the Award
Agreement, all unearned Restricted Stock Units will be forfeited to the Company. 
 10.    Performance Units
and Performance Shares. 
 (a)    Grant of Performance Units/Shares. Performance Units and Performance
Shares may be granted to Service Providers at any time and from time to time, as will be determined by the Administrator, in its sole discretion. The Administrator will have complete discretion in determining the number of Performance Units and
Performance Shares granted to each Participant. 
 (b)    Value of Performance Units/Shares. Each
Performance Unit will have an initial value that is established by the Administrator on or before the date of grant. Each Performance Share will have an initial value equal to the Fair Market Value of a Share on the date of grant. 

(c)    Performance Objectives and Other Terms. The Administrator will set performance objectives or other
vesting provisions (including, without limitation, continued status as a Service Provider) in its discretion which, depending on the extent to which they are met, will determine the number or value of Performance Units/Shares that will be paid
out to the Service Providers. The time period during which the performance objectives or other vesting provisions must be met will be called the “Performance Period.” Each Award of Performance Units/Shares will be evidenced by an Award
Agreement that will specify the Performance Period, and such other terms and conditions as the Administrator, in its sole discretion, will determine. The Administrator may set performance objectives based upon the achievement of Company-wide,
divisional, business unit or individual goals (including, but not limited to, continued employment or service), applicable federal or state securities laws, or any other basis determined by the Administrator in its discretion. 

(d)    Earning of Performance Units/Shares. After the applicable Performance Period has ended, the holder of
Performance Units/Shares will be entitled to receive a payout of the number of Performance Units/Shares earned by the Participant over the Performance Period, to be determined as a function of the extent to which the corresponding performance
objectives or other vesting provisions have been achieved. After the grant of a Performance Unit/Share, the Administrator, in its sole discretion, may reduce or waive any performance objectives or other vesting provisions for such Performance
Unit/Share. 
 (e)    Form and Timing of Payment of Performance Units/Shares. Payment of earned
Performance Units/Shares will be made as soon as practicable after the expiration of the applicable Performance Period. The Administrator, in its sole discretion, may pay earned Performance Units/Shares in the form of cash, in Shares (which have an
aggregate Fair Market Value equal to the value of the earned Performance Units/Shares at the close of the applicable Performance Period) or in a combination thereof. 

  
 -14- 

 (f)    Cancellation of Performance Units/Shares. On the
date set forth in the Award Agreement, all unearned or unvested Performance Units/Shares will be forfeited to the Company, and again will be available for grant under the Plan. 

11.    Outside Director Award Limitations. No Outside Director may be granted, in any Fiscal Year,
Awards (the value of which will be based on their grant date fair value determined in accordance with U.S. generally accepted accounting principles) and any other compensation (including without limitation any cash retainers or fees) that, in the
aggregate, exceed $1,000,000. Any Awards or other compensation provided to an individual (a) for his or her services as an Employee, or for his or her services as a Consultant other than as an Outside Director, or (b) prior to the
Registration Date, will be excluded for purposes of this Section 11. 
 12.    Compliance With
Section 409A. Awards will be designed and operated in such a manner that they are either exempt from the application of, or comply with, the requirements of Section 409A such that the grant, payment, settlement or
deferral will not be subject to the additional tax or interest applicable under Section 409A, except as otherwise determined in the sole discretion of the Administrator. The Plan and each Award Agreement under the Plan is intended to be exempt
from or meet the requirements of Section 409A and will be construed and interpreted in accordance with such intent (including with respect to any ambiguities or ambiguous terms), except as otherwise determined in the sole discretion of the
Administrator. To the extent that an Award or payment, or the settlement or deferral thereof, is subject to Section 409A the Award will be granted, paid, settled or deferred in a manner that will meet the requirements of Section 409A, such
that the grant, payment, settlement or deferral will not be subject to the additional tax or interest applicable under Section 409A. In no event will the Company or any of its Parent or Subsidiaries have any responsibility, liability, or
obligation to reimburse, indemnify, or hold harmless a Participant (or any other person) in respect of Awards, for any taxes, penalties or interest that may be imposed on, or other costs incurred by, Participant (or any other person) as a result of
Section 409A. 
 13.    Leaves of Absence/Transfer Between Locations. Unless the Administrator provides
otherwise or as otherwise required by Applicable Laws, vesting of Awards granted hereunder will be suspended during any unpaid leave of absence. A Participant will not cease to be an Employee in the case of (i) any leave of absence approved by
the Company or (ii) transfers between locations of the Company or between the Company, its Parent, or any of its Subsidiaries. For purposes of Incentive Stock Options, no such leave may exceed three (3) months, unless reemployment upon
expiration of such leave is guaranteed by statute or contract. If reemployment upon expiration of a leave of absence approved by the Company is not so guaranteed, then six (6) months following the first (1st) day of such leave, any Incentive Stock Option held by the Participant will cease to be treated as an Incentive Stock Option and will be treated for tax purposes as a Nonstatutory Stock Option. 

14.    Limited Transferability of Awards. Unless determined otherwise by the Administrator, Awards may not be sold,
pledged, assigned, hypothecated, transferred, or disposed of in any manner other than by will or by the laws of descent and distribution (which, for purposes of clarification, shall be deemed to include through a beneficiary designation if available
in accordance with Section 6(f)), and may be exercised, during the lifetime of the Participant, only by the Participant. If the Administrator makes an Award transferable, such Award will contain such additional terms and conditions as the
Administrator deems appropriate. 

  
 -15- 

 15.    Adjustments; Dissolution or Liquidation; Merger or Change in
Control. 
 (a)    Adjustments. In the event that any dividend or other distribution (whether in the form of
cash, Shares, other securities, or other property), recapitalization, stock split, reverse stock split, reorganization, merger, consolidation, split-up, spin-off,
combination, reclassification, repurchase, or exchange of Shares or other securities of the Company, or other change in the corporate structure of the Company affecting the Shares occurs (other than any ordinary dividends or other ordinary
distributions), the Administrator, in order to prevent diminution or enlargement of the benefits or potential benefits intended to be made available under the Plan, will adjust the number and class of shares of stock that may be delivered under the
Plan and/or the number, class, and price of shares of stock covered by each outstanding Award, and numerical Share limits in Section 3. 

(b)    Dissolution or Liquidation. In the event of the proposed dissolution or liquidation of the Company, the
Administrator will notify each Participant as soon as practicable prior to the effective date of such proposed transaction. To the extent it has not been previously exercised, an Award will terminate immediately prior to the consummation of such
proposed action. 
 (c)    Merger or Change in Control. In the event of a merger of the Company with or into
another corporation or other entity or a Change in Control, each outstanding Award will be treated as the Administrator determines (subject to the provisions of the following paragraph) without a Participant’s consent, including, without
limitation, that (i) Awards will be assumed, or substantially equivalent awards will be substituted, by the acquiring or succeeding corporation (or an affiliate thereof) with appropriate adjustments as to the number and kind of shares and
prices; (ii) upon written notice to a Participant, that the Participant’s Awards will terminate upon or immediately prior to the consummation of such merger or Change in Control; (iii) outstanding Awards will vest and become
exercisable, realizable, or payable, or restrictions applicable to an Award will lapse, in whole or in part prior to or upon consummation of such merger or Change in Control, and, to the extent the Administrator determines, terminate upon or
immediately prior to the effectiveness of such merger or Change in Control; (iv) (A) the termination of an Award in exchange for an amount of cash and/or property, if any, equal to the amount that would have been attained upon the exercise of
such Award or realization of the Participant’s rights as of the date of the occurrence of the transaction (and, for the avoidance of doubt, if as of the date of the occurrence of the transaction the Administrator determines in good faith that
no amount would have been attained upon the exercise of such Award or realization of the Participant’s rights, then such Award may be terminated by the Company without payment), or (B) the replacement of such Award with other rights or
property selected by the Administrator in its sole discretion; or (v) any combination of the foregoing. In taking any of the actions permitted under this Section 15(c), the Administrator will not be obligated to treat all Awards, all
Awards held by a Participant, all Awards of the same type, or all portions of Awards, similarly. 
 In the event that the successor
corporation does not assume or substitute for the Award (or portion thereof), the Participant will fully vest in and have the right to exercise his or her outstanding Options and Stock Appreciation Rights (or portions thereof) not assumed or
substituted for, including Shares as to which such Awards would not otherwise be vested or exercisable, all restrictions on Restricted Stock, Restricted Stock Units, Performance Shares and Performance Units

  
 -16- 

 
(or portions thereof) not assumed or substituted for will lapse, and, with respect to Awards with performance-based vesting (or portions thereof) not assumed or substituted for, all performance
goals or other vesting criteria will be deemed achieved at one hundred percent (100%) of target levels and all other terms and conditions met, in each case, unless specifically provided otherwise under the applicable Award Agreement or other written
agreement between the Participant and the Company or any of its Subsidiaries or Parents, as applicable. In addition, unless specifically provided otherwise under the applicable Award Agreement or other written agreement between the Participant and
the Company or any of its Subsidiaries or Parents, as applicable, if an Option or Stock Appreciation Right (or portion thereof) is not assumed or substituted in the event of a merger or Change in Control, the Administrator will notify the
Participant in writing or electronically that the Option or Stock Appreciation Right (or its applicable portion) will be exercisable for a period of time determined by the Administrator in its sole discretion, and the Option or Stock Appreciation
Right (or its applicable portion) will terminate upon the expiration of such period. 
 For the purposes of this Section 15(c) and
Section 15(d) below, an Award will be considered assumed if, following the merger or Change in Control, the Award confers the right to purchase or receive, for each Share subject to the Award immediately prior to the merger or Change in
Control, the consideration (whether stock, cash, or other securities or property) received in the merger or Change in Control by holders of Common Stock for each Share held on the effective date of the transaction (and if holders were offered a
choice of consideration, the type of consideration chosen by the holders of a majority of the outstanding Shares); provided, however, that if such consideration received in the merger or Change in Control is not solely common stock of the successor
corporation or its Parent, the Administrator may, with the consent of the successor corporation, provide for the consideration to be received upon the exercise of an Option or Stock Appreciation Right or upon the payout of a Restricted Stock Unit,
Performance Unit or Performance Share, for each Share subject to such Award, to be solely common stock of the successor corporation or its Parent equal in fair market value to the per share consideration received by holders of Common Stock in the
merger or Change in Control. 
 Notwithstanding anything in this Section 15(c) to the contrary, an Award that vests, is earned or paid-out upon the satisfaction of one or more performance goals will not be considered assumed if the Company or its successor modifies any of such performance goals without the Participant’s consent, in all
cases, unless specifically provided otherwise under the applicable Award Agreement or other written agreement between the Participant and the Company or any of its Subsidiaries or Parents, as applicable; provided, however, a modification to such
performance goals only to reflect the successor corporation’s post-Change in Control corporate structure will not be deemed to invalidate an otherwise valid Award assumption. 

Notwithstanding anything in this Section 15(c) to the contrary, and unless otherwise provided in an Award Agreement, if an Award that
vests, is earned or paid-out under an Award Agreement is subject to Section 409A and if the change in control definition contained in the Award Agreement (or other agreement related to the Award, as
applicable) does not comply with the definition of “change in control” for purposes of a distribution under Section 409A, then any payment of an amount that is otherwise accelerated under this Section will be delayed until the
earliest time that such payment would be permissible under Section 409A without triggering any penalties applicable under Section 409A. 

  
 -17- 

 (d)     Outside Director Awards. With respect to Awards
granted to an Outside Director that are assumed or substituted for, if on the date of or following such assumption or substitution the Participant’s status as a Director or a director of the successor corporation, as applicable, is terminated
other than upon a voluntary resignation by the Participant (unless such resignation is at the request of the acquirer), then the Outside Director will fully vest in and have the right to exercise Options and/or Stock Appreciation Rights as to all of
the Shares underlying such Award, including those Shares which otherwise would not be vested or exercisable, all restrictions on Restricted Stock and Restricted Stock Units will lapse, and, with respect to Awards with performance-based vesting, all
performance goals or other vesting criteria will be deemed achieved at one hundred percent (100%) of target levels and all other terms and conditions met, unless specifically provided otherwise under the applicable Award Agreement or other written
agreement between the Participant and the Company or any of its Parent or Subsidiaries, as applicable. 
 16.    Tax
Withholding. 
 (a)    Withholding Requirements. Prior to the delivery of any Shares or cash pursuant to an
Award (or exercise thereof) or such earlier time as any tax withholdings are due, the Company (or any of its Parent, Subsidiaries, or affiliates employing or retaining the services of a Participant, as applicable) will have the power and the right
to deduct or withhold, or require a Participant to remit to the Company (or any of its Parent, Subsidiaries, or affiliates, as applicable) or a relevant tax authority, an amount sufficient to satisfy U.S. federal, state, local, non-U.S., and other taxes (including the Participant’s FICA obligation) required to be withheld or paid with respect to such Award (or exercise thereof). 

(b)    Withholding Arrangements. The Administrator, in its sole discretion and pursuant to such procedures as it
may specify from time to time, may permit a Participant to satisfy such tax liability or withholding obligation, in whole or in part by such methods as the Administrator shall determine, including, without limitation, (i) paying cash,
(ii) electing to have the Company withhold otherwise deliverable cash or Shares having a fair market value equal to the minimum statutory amount required to be withheld or such greater amount as the Administrator may determine if such amount
would not have adverse accounting consequences, as the Administrator determines in its sole discretion, (iii) delivering to the Company already-owned Shares having a fair market value equal to the statutory amount required to be withheld or
such greater amount as the Administrator may determine, in each case, provided the delivery of such Shares will not result in any adverse accounting consequences, as the Administrator determines in its sole discretion, (iv) selling a sufficient
number of Shares otherwise deliverable to the Participant through such means as the Administrator may determine in its sole discretion (whether through a broker or otherwise) equal to the amount required to be withheld or paid, (v) such other
consideration and method of payment for the meeting of tax liabilities or withholding obligations as the Administrator may determine to the extent permitted by Applicable Laws, or (vi) any combination of the foregoing methods of payment. The
amount of the withholding requirement will be deemed to include any amount which the Administrator agrees may be withheld at the time the election is made, not to exceed the amount determined by using the maximum federal, state or local marginal
income tax rates applicable to the Participant with respect to the Award on the date that the amount of tax to be withheld is to be determined or such greater amount as the Administrator may determine if such amount would not have adverse accounting
consequences, as the Administrator determines in its sole discretion. The fair market value of the Shares to be withheld or delivered will be determined as of the date that the taxes are required to be withheld. 

  
 -18- 

 17.    No Effect on Employment or Service. Neither the Plan nor
any Award will confer upon a Participant any right with respect to continuing the Participant’s relationship as a Service Provider with the Company or its Subsidiaries or Parents, as applicable, nor will they interfere in any way with the
Participant’s right or the right of the Company and its Subsidiaries or Parents, as applicable, to terminate such relationship at any time, with or without cause, to the extent permitted by Applicable Laws. 

18.    Date of Grant. The date of grant of an Award will be, for all purposes, the date on which the Administrator
makes the determination granting such Award, or such other later date as is determined by the Administrator. Notice of the determination will be provided to each Participant within a reasonable time after the date of such grant. 

19.    Term of Plan. 

(a)    Effectiveness. Subject to Section 23 of the Plan, the Plan originally, and prior to any amendment and
restatement thereof, became effective upon its adoption by the Board. This amendment and restatement of the Plan will become effective as of one business day prior to the Registration Date (the “Effective Date”), subject to
stockholder approval in accordance with Section 20 within twelve (12) months of the date this amendment and restatement of the Plan is adopted by the Board. 

(b)    Expiration. Unless sooner terminated under Section 20, the Plan, as amended and restated, will continue
in effect until terminated under Section 20, but (i) no Options that qualify as incentive stock options within the meaning of Code Section 422 may be granted after ten (10) years from the earlier of the Board or stockholder
approval of this amendment and restatement of the Plan and (ii) Section 3(b) relating to automatic share reserve increases will operate only until the ten (10) year anniversary of the earlier of the Board or stockholder approval of
this amendment and restatement of the Plan. 
 20.    Amendment and Termination of the Plan. 

(a)    Amendment and Termination. The Administrator may at any time amend, alter, suspend or terminate the Plan.

 (b)    Stockholder Approval. The Company will obtain stockholder approval of any Plan amendment to the extent
necessary and desirable to comply with Applicable Laws. 
 (c)    Effect of Amendment or Termination. No
amendment, alteration, suspension or termination of the Plan will materially impair the rights of any Participant, unless mutually agreed otherwise between the Participant and the Administrator, which agreement must be in writing and signed by the
Participant and the Company. Termination of the Plan will not affect the Administrator’s ability to exercise the powers granted to it hereunder with respect to Awards granted under the Plan prior to the date of such termination. 

  
 -19- 

 21.    Conditions Upon Issuance of Shares. 

(a)    Legal Compliance. Shares will not be issued pursuant to the exercise of an Award unless the exercise of such
Award and the issuance and delivery of such Shares will comply with Applicable Laws and will be further subject to the approval of counsel for the Company with respect to such compliance. 

(b)    Investment Representations. As a condition to the exercise of an Award, the Company may require the person
exercising such Award to represent and warrant at the time of any such exercise that the Shares are being purchased only for investment and without any present intention to sell or distribute such Shares if, in the opinion of counsel for the
Company, such a representation is required. 
 22.    Inability to Obtain Authority. The inability of the Company
to obtain authority from any regulatory body having jurisdiction or to complete or comply with the requirements of any registration or other qualification of the Shares under any U.S. state or federal law or
non-U.S. law or under the rules and regulations of the Securities and Exchange Commission, the stock exchange on which Shares of the same class are then listed, or any other governmental or regulatory body,
which authority, registration, qualification or rule compliance is deemed by the Company’s counsel to be necessary or advisable for the issuance and sale of any Shares hereunder, will relieve the Company of any liability in respect of the
failure to issue or sell such Shares as to which such requisite authority, registration, qualification or rule compliance will not have been obtained. 

23.    Stockholder Approval. The Plan will be subject to approval by the stockholders of the Company within twelve
(12) months after the date the Plan is adopted by the Board. Such stockholder approval will be obtained in the manner and to the degree required under Applicable Laws. 

24.    Forfeiture Events. The Administrator may specify in an Award Agreement that the Participant’s rights,
payments, and benefits with respect to an Award will be subject to the reduction, cancellation, forfeiture, recoupment, reimbursement, or reacquisition upon the occurrence of certain specified events, in addition to any otherwise applicable vesting
or performance conditions of an Award. Notwithstanding any provisions to the contrary under this Plan, an Award shall be subject to the Company’s clawback policy as may be established and/or amended from time to time to comply with Applicable
Laws (including without limitation pursuant to the listing standards of any national securities exchange or association on which the Company’s securities are listed or as may be required by the Dodd-Frank
Wall Street Reform and Consumer Protection Act) (the “Clawback Policy”). The Administrator may require a Participant to forfeit, return or reimburse the Company all or a portion of the Award and any amounts paid thereunder
pursuant to the terms of the Clawback Policy or as necessary or appropriate to comply with Applicable Laws. Unless this Section 24 specifically is mentioned and waived in an Award Agreement or other document, no recovery of compensation under a
Clawback Policy or otherwise will constitute an event that triggers or contributes to any right of a Participant to resign for “good reason” or “constructive termination” (or similar term) under any agreement with the Company or
any Parent or Subsidiary of the Company. 

*                *       
         * 

  
 -20- 

 ALX ONCOLOGY HOLDINGS INC. 

AMENDED AND RESTATED 2020 EQUITY INCENTIVE PLAN 

STOCK OPTION AGREEMENT 

NOTICE OF STOCK OPTION GRANT 

Unless otherwise defined herein, the terms defined in the ALX Oncology Holdings Inc. Amended and Restated 2020 Equity Incentive Plan (the
“Plan”) shall have the same defined meanings in this Stock Option Agreement, which includes the Notice of Stock Option Grant (the “Notice of Grant”), the Terms and Conditions of Stock Option Grant, attached hereto
as Exhibit A, the Exercise Notice, attached hereto as Exhibit B, and all other exhibits, appendices, and addenda attached hereto (together, the “Option Agreement”). 

Participant Name: 

Address: 
 The undersigned
Participant has been granted an Option to purchase Common Stock of the Company, subject to the terms and conditions of the Plan and this Option Agreement, as follows: 
  

					
	         Grant Number:	 	                                      
                                  	  	
			
	         Date of Grant:	 	                                      
                                  	  	
			
	         Vesting Commencement Date:	 	                                      
                                  	  	
			
	         Exercise Price per Share:	 	$                                      
                                	  	
			
	         Total Number of Shares Granted:	 	                                      
                                  	  	
			
	         Total Exercise Price:	 	$                                      
                                	  	
			
	         Type of Option:	 	         Incentive Stock Option	  	
			
		 	         Nonstatutory Stock Option	  	
			
	         Term/Expiration Date:	 	                                      
                                  	  	

 Vesting Schedule: 

Subject to any acceleration provisions contained in the Plan, this Option Agreement or any other written agreement between Participant and the
Company (or any Parent or Subsidiary of the Company, as applicable) governing the terms of this Option, this Option shall vest and be exercisable, in whole or in part, according to the following vesting schedule: 

[Insert vesting schedule] 

 Termination Period: 

This Option shall be exercisable, to the extent vested, for [insert number] after Participant ceases to be a Service Provider, unless such
termination is due to Participant’s death or Disability, in which case this Option shall be exercisable, to the extent vested, for [insert number] after Participant ceases to be a Service Provider. Notwithstanding the foregoing sentence, in no
event may this Option be exercised after the Term/Expiration Date as provided above and this Option may be subject to earlier termination as provided in Section 15 of the Plan. 

By Participant’s signature and the signature of the representative of the Company below, Participant and the Company agree that this
Option is granted under and governed by the terms and conditions of the Plan and this Option Agreement, including the Terms and Conditions of Stock Option Grant, attached hereto as Exhibit A, the Exercise Notice, attached hereto as
Exhibit B, and all other exhibits, appendices and addenda attached hereto, all of which are made a part of this document. Participant acknowledges receipt of a copy of the Plan. Participant has reviewed the Plan and this
Option Agreement in their entirety, has had an opportunity to obtain the advice of counsel prior to executing this Option Agreement and fully understands all provisions of the Plan and the Option Agreement. Participant hereby agrees to accept as
binding, conclusive and final all decisions or interpretations of the Administrator upon any questions relating to the Plan or this Option Agreement. Participant further agrees to notify the Company upon any change in Participant’s residence
address indicated below. 
  

			
	PARTICIPANT	    	ALX ONCOLOGY HOLDINGS INC.
		
	  
 Signature
	    	  
 Signature

		
	  
 Print Name
	    	  
 Print Name

		
		    	  
 Title

		
	Residence Address:	    	
		
	  
	    	
		
	  
	    	

  
 -2- 

 EXHIBIT A 

ALX ONCOLOGY HOLDINGS INC. 

AMENDED AND RESTATED 2020 EQUITY INCENTIVE PLAN 

STOCK OPTION AGREEMENT 

TERMS AND CONDITIONS OF STOCK OPTION GRANT 

1.    Grant of Option. 

(a)    The Company hereby grants to the individual (“Participant”) named in the Notice of Stock Option
Grant of this Option Agreement (the “Notice of Grant”), an option (the “Option”) to purchase the number of Shares set forth in the Notice of Grant, at the exercise price per Share set forth in the Notice of Grant
(the “Exercise Price”), subject to all of the terms and conditions in this Option Agreement and the Plan, which is incorporated herein by reference. Subject to Section 20 of the Plan, in the event of a conflict between the
terms and conditions of the Plan and this Option Agreement, the terms and conditions of the Plan shall prevail. 

(b)    For U.S. taxpayers, if designated in the Notice of Grant as an Incentive Stock Option (“ISO”),
this Option is intended to qualify as an Incentive Stock Option as defined in Section 422 of the Code. Nevertheless, to the extent that it exceeds the $100,000 rule of Code Section 422(d), this Option shall be treated as a Nonstatutory
Stock Option (“NSO”). Further, if for any reason this Option (or portion thereof) shall not qualify as an ISO, then, to the extent of such nonqualification, such Option (or portion thereof) shall be regarded as a NSO granted under
the Plan. In no event shall the Administrator, the Company or any Parent or Subsidiary or any of their respective employees or directors have any liability to Participant (or any other person) due to the failure of the Option to qualify for any
reason as an ISO. 
 (c)    For non-U.S. taxpayers, the Option will be
designated as an NSO. 
 2.    Vesting Schedule. Except as provided in Section 3, the Option awarded by this
Option Agreement will vest in accordance with the vesting provisions set forth in the Notice of Grant. Unless specifically provided otherwise in this Option Agreement or other written agreement between Participant and the Company or any Parent or
Subsidiary of the Company, as applicable, Shares subject to this Option that are scheduled to vest on a certain date or upon the occurrence of a certain condition will not vest in accordance with any of the provisions of this Option Agreement,
unless Participant will have been continuously a Service Provider from the Date of Grant until the date such vesting occurs. 

3.    Administrator Discretion. The Administrator, in its discretion, may accelerate the vesting of the balance, or
some lesser portion of the balance, of the unvested Option at any time, subject to the terms of the Plan. If so accelerated, such Option will be considered as having vested as of the date specified by the Administrator. 

 4.    Exercise of Option. 

(a)    Right to Exercise. This Option shall be exercisable during its term in accordance with the Vesting Schedule
set out in the Notice of Grant and with the applicable provisions of the Plan and this Option Agreement. 

(b)    Method of Exercise. This Option shall be exercisable by delivery of an exercise notice (the
“Exercise Notice”) in the form attached as Exhibit B to the Notice of Grant or in a manner and pursuant to such procedures as the Administrator may determine, which shall state the election to exercise the
Option, the number of Shares with respect to which the Option is being exercised (the “Exercised Shares”), and such other representations and agreements as may be required by the Company. The Exercise Notice shall be completed by
Participant and delivered to the Company, accompanied by payment of the aggregate Exercise Price as to all Exercised Shares, together with any applicable Tax Obligations (as defined below). This Option shall be deemed to be exercised upon receipt by
the Company of such fully executed Exercise Notice accompanied by the aggregate Exercise Price, together with any applicable Tax Obligations. 

No Shares shall be issued pursuant to the exercise of an Option unless such issuance and such exercise comply with Applicable Laws. Assuming
such compliance, for income tax purposes the Shares shall be considered transferred to Participant on the date on which the Option is exercised with respect to such Shares. 

5.    Method of Payment. Payment of the aggregate Exercise Price shall be by any of the following, or a combination
thereof, at the election of Participant: 
 (a)    cash; 

(b)    check; 

(c)    consideration received by the Company under a formal cashless exercise program adopted by the Company in connection
with the Plan; or 
 (d)    if Participant is a U.S. employee, surrender of other Shares which (i) shall be valued
at its fair market value on the date of surrender, and (ii) must be owned free and clear of any liens, claims, encumbrances or security interests, if accepting such Shares, in the sole discretion of the Administrator, shall not result in any
adverse accounting consequences to the Company. 
 A non-U.S. resident’s methods of exercise
may be restricted by the terms and conditions of any appendix to this Agreement for Participant’s country (including the Country Addendum, as defined below). 

6.    Non-Transferability of Option. This Option may not be transferred in
any manner otherwise than by will or by the laws of descent or distribution and may be exercised during the lifetime of Participant only by Participant. 

7.    Term of Option. This Option may be exercised only within the term set out in the Notice of Grant, and may be
exercised during such term only in accordance with the Plan and the terms of this Option Agreement. 

  
 -2- 

 8.    Tax Obligations. 

(a)    Responsibility for Taxes. Participant acknowledges that, regardless of any action taken by the Company
or, if different, Participant’s employer or any Parent or Subsidiary to which Participant is providing services (together, the “Service Recipients”), the ultimate liability for any tax and/or social insurance liability
obligations and requirements in connection with the Option, including, without limitation, (i) all federal, state, and local taxes (including Participant’s Federal Insurance Contributions Act (FICA) obligations) that are required to be
withheld by any Service Recipient or other payment of tax-related items related to Participant’s participation in the Plan and legally applicable to Participant, (ii) Participant’s and, to the
extent required by any Service Recipient, the Service Recipient’s fringe benefit tax liability, if any, associated with the grant, vesting, or exercise of the Option or sale of Shares, and (iii) any other Service Recipient taxes the
responsibility for which Participant has, or has agreed to bear, with respect to the Option (or exercise thereof or issuance of Shares thereunder) (collectively, the “Tax Obligations”), is and remains Participant’s sole
responsibility and may exceed the amount actually withheld by the applicable Service Recipient(s). Participant further acknowledges that no Service Recipient (A) makes any representations or undertakings regarding the treatment of any Tax
Obligations in connection with any aspect of the Option, including, but not limited to, the grant, vesting or exercise of the Option, the subsequent sale of Shares acquired pursuant to such exercise and the receipt of any dividends or other
distributions, and (B) makes any commitment to and is under any obligation to structure the terms of the grant or any aspect of the Option to reduce or eliminate Participant’s liability for Tax Obligations or achieve any particular tax
result. Further, if Participant is subject to Tax Obligations in more than one jurisdiction between the Date of Grant and the date of any relevant taxable or tax withholding event, as applicable, Participant acknowledges that the applicable Service
Recipient(s) (or former employer, as applicable) may be required to withhold or account for Tax Obligations in more than one jurisdiction. If Participant fails to make satisfactory arrangements for the payment of any required Tax Obligations
hereunder at the time of the applicable taxable event, Participant acknowledges and agrees that the Company may refuse to issue or deliver the Shares. 

(b)    Tax Withholding. Pursuant to such procedures as the Administrator may specify from time to time, the
applicable Service Recipient(s) will withhold the amount required to be withheld for the payment of Tax Obligations. The Administrator, in its sole discretion and pursuant to such procedures as it may specify from time to time, may permit
Participant to satisfy such Tax Obligations, in whole or in part (without limitation), if permissible by applicable local law, by (i) paying cash, (ii) electing to have the Company withhold otherwise deliverable Shares having a fair market
value equal to the minimum amount that is necessary to meet the withholding requirement for such Tax Obligations (or such greater amount as Participant may elect if permitted by the Administrator, if such greater amount would not result in adverse
financial accounting consequences), (iii) having the amount of such Tax Obligations withheld from Participant’s wages or other cash compensation paid to Participant by the applicable Service Recipient(s), (iv) delivering to the Company
Shares that Participant owns and that have vested with a fair market value equal to such Tax Obligations, or (v) selling a sufficient number of such Shares otherwise deliverable to Participant through such means as the Company may determine in
its sole discretion (whether through a broker or otherwise) equal to the minimum amount that is necessary to meet the withholding requirement for such Tax Obligations (or such greater amount as Participant may elect if permitted by the
Administrator, if such greater amount would not result in adverse financial accounting consequences). To the extent determined appropriate by the Administrator in its discretion, the Administrator will have the right (but not the obligation) to
satisfy any Tax Obligations by reducing the number of Shares otherwise deliverable to Participant. 

  
 -3- 

 (c)    Notice of Disqualifying Disposition of ISO Shares. If the
Option granted to Participant herein is an ISO, and if Participant sells or otherwise disposes of any of the Shares acquired pursuant to the ISO on or before the later of (i) the date two (2) years after the Date of Grant, or (ii) the
date one (1) year after the date of exercise, Participant shall immediately notify the Company in writing of such disposition. Participant agrees that Participant may be subject to income tax withholding by the Company on the compensation
income recognized by Participant. 
 (d)    Section 409A. Under Section 409A, a stock right (such as the
Option) that vests after December 31, 2004 (or that vested on or prior to such date but which was materially modified after October 3, 2004), that was granted with a per share exercise price that is determined by the Internal Revenue
Service (the “IRS”) to be less than the fair market value of an underlying share on the date of grant (a “discount option”) may be considered “deferred compensation.” A stock right that is a “discount
option” may result in (i) income recognition by the recipient of the stock right prior to the exercise of the stock right, (ii) an additional twenty percent (20%) federal income tax, and (iii) potential penalty and interest
charges. The “discount option” may also result in additional state income, penalty and interest tax to the recipient of the stock right. Participant acknowledges that the Company cannot and has not guaranteed that the IRS will agree that
the per Share exercise price of this Option equals or exceeds the fair market value of a Share on the date of grant in a later examination. Participant agrees that if the IRS determines that the Option was granted with a per Share exercise price
that was less than the fair market value of a Share on the date of grant, Participant shall be solely responsible for Participant’s costs related to such a determination. In no event will the Company or any of its Parent or Subsidiaries have
any responsibility, liability, or obligation to reimburse, indemnify, or hold harmless Participant (or any other person) in respect of this Option or any other Awards, for any taxes, penalties or interest that may be imposed on, or other costs
incurred by, Participant (or any other person) as a result of Section 409A. 
 9.    Rights as
Stockholder. Neither Participant nor any person claiming under or through Participant will have any of the rights or privileges of a stockholder of the Company in respect of any Shares deliverable hereunder unless and until certificates
representing such Shares (which may be in book entry form) will have been issued, recorded on the records of the Company or its transfer agents or registrars, and delivered to Participant (including through electronic delivery to a brokerage
account). After such issuance, recordation and delivery, Participant will have all the rights of a stockholder of the Company with respect to voting such Shares and receipt of dividends and distributions on such Shares. 

10.    Entire Agreement; Governing Law. The Plan is incorporated herein by reference. The Plan and this Option
Agreement constitute the entire agreement of the parties with respect to the subject matter hereof and supersede in their entirety all prior undertakings and agreements of the Company and Participant with respect to the subject matter hereof, and
may not be modified adversely to Participant’s interest except by means of a writing signed by the Company and Participant. This Option Agreement is governed by the internal substantive laws but not the choice of law rules of the State of
Delaware. 

  
 -4- 

 11.    No Guarantee of Continued Service. PARTICIPANT
ACKNOWLEDGES AND AGREES THAT THE VESTING OF SHARES PURSUANT TO THE VESTING SCHEDULE HEREOF IS EARNED ONLY BY CONTINUING AS A SERVICE PROVIDER, WHICH UNLESS PROVIDED OTHERWISE UNDER APPLICABLE LAWS IS AT THE WILL OF THE COMPANY (OR THE PARENT OR
SUBSIDIARY EMPLOYING OR RETAINING PARTICIPANT) AND NOT THROUGH THE ACT OF BEING HIRED, BEING GRANTED THIS OPTION OR ACQUIRING SHARES HEREUNDER. PARTICIPANT FURTHER ACKNOWLEDGES AND AGREES THAT THIS OPTION AGREEMENT, THE TRANSACTIONS CONTEMPLATED
HEREUNDER AND THE VESTING SCHEDULE SET FORTH HEREIN DO NOT CONSTITUTE AN EXPRESS OR IMPLIED PROMISE OF CONTINUED ENGAGEMENT AS A SERVICE PROVIDER FOR THE VESTING PERIOD, FOR ANY PERIOD, OR AT ALL, AND SHALL NOT INTERFERE IN ANY WAY WITH
PARTICIPANT’S RIGHT OR THE RIGHT OF THE COMPANY (OR THE PARENT OR SUBSIDIARY EMPLOYING OR RETAINING PARTICIPANT) TO TERMINATE PARTICIPANT’S RELATIONSHIP AS A SERVICE PROVIDER, SUBJECT TO APPLICABLE LAW, WHICH TERMINATION, UNLESS PROVIDED
OTHERWISE UNDER APPLICABLE LAW, MAY BE AT ANY TIME, WITH OR WITHOUT CAUSE. 
 12.    Nature of Grant. In
accepting the Option, Participant acknowledges, understands and agrees that: 
 (a)    the grant of the Option is
voluntary and occasional and does not create any contractual or other right to receive future grants of options, or benefits in lieu of options, even if options have been granted in the past; 

(b)    all decisions with respect to future option or other grants, if any, will be at the sole discretion of the
Administrator; 
 (c)    Participant is voluntarily participating in the Plan; 

(d)    the Option and any Shares acquired under the Plan are not intended to replace any pension rights or compensation;

 (e)    the Option and Shares acquired under the Plan and the income and value of same, are not part of normal or
expected compensation for purposes of calculating any severance, resignation, termination, redundancy, dismissal, end-of-service payments, bonuses, long-service awards,
pension or retirement or welfare benefits or similar payments; 
 (f)    the future value of the Shares underlying the
Option is unknown, indeterminable, and cannot be predicted with certainty; 
 (g)    if the underlying Shares do not
increase in value, the Option will have no value; 
 (h)    if Participant exercises the Option and acquires Shares, the
value of such Shares may increase or decrease in value, even below the Exercise Price; 

  
 -5- 

 (i)    for purposes of the Option, Participant’s status as a
Service Provider will be considered terminated as of the date Participant is no longer actively providing services to the Company or any Parent or Subsidiary (regardless of the reason for such termination and whether or not later found to be invalid
or in breach of employment laws in the jurisdiction where Participant is a Service Provider or the terms of Participant’s employment or service agreement, if any), and unless otherwise expressly provided in this Option Agreement (including by
reference in the Notice of Grant to other arrangements or contracts) or determined by the Administrator, (i) Participant’s right to vest in the Option under the Plan, if any, will terminate as of such date and will not be extended by any
notice period (e.g., Participant’s period of service would not include any contractual notice period or any period of “garden leave” or similar period mandated under employment laws in the jurisdiction where Participant is a Service
Provider or the terms of Participant’s employment or service agreement, if any, unless Participant is providing bona fide services during such time); and (ii) the period (if any) during which Participant may exercise the Option after such
termination of Participant’s engagement as a Service Provider will commence on the date Participant ceases to actively provide services and will not be extended by any notice period mandated under employment laws in the jurisdiction where
Participant is employed or terms of Participant’s engagement agreement, if any; the Administrator shall have the exclusive discretion to determine when Participant is no longer actively providing services for purposes of this Option grant
(including whether Participant may still be considered to be providing services while on a leave of absence and consistent with local law); 

(j)    unless otherwise provided in the Plan or by the Administrator in its discretion, the Option and the benefits
evidenced by this Option Agreement do not create any entitlement to have the Option or any such benefits transferred to, or assumed by, another company nor be exchanged, cashed out or substituted for, in connection with any corporate transaction
affecting the Shares; and 
 (k)    the following provisions apply only if Participant is providing services outside the
United States: 
 (i)    the Option and the Shares subject to the Option are not part of normal or expected compensation
or salary for any purpose; 
 (ii)    Participant acknowledges and agrees that no Service Recipient shall be liable for
any foreign exchange rate fluctuation between Participant’s local currency and the United States Dollar that may affect the value of the Option or of any amounts due to Participant pursuant to the exercise of the Option or the subsequent sale
of any Shares acquired upon exercise; and 
 (iii)    no claim or entitlement to compensation or damages shall arise
from forfeiture of the Option resulting from the termination of Participant’s status as a Service Provider (for any reason whatsoever, whether or not later found to be invalid or in breach of employment laws in the jurisdiction where
Participant is a Service Provider or the terms of Participant’s employment or service agreement, if any), and in consideration of the grant of the Option to which Participant is otherwise not entitled, Participant irrevocably agrees never to
institute any claim against any Service Recipient, waives his or her ability, if any, to bring any such claim, and releases each Service Recipient from any such claim; if, notwithstanding the foregoing, any such claim is allowed by a court of
competent jurisdiction, then, by participating in the Plan, Participant shall be deemed irrevocably to have agreed not to pursue such claim and agrees to execute any and all documents necessary to request dismissal or withdrawal of such claim. 

  
 -6- 

 13.    No Advice Regarding Grant. The Company is not
providing any tax, legal or financial advice, nor is the Company making any recommendations regarding Participant’s participation in the Plan, or Participant’s acquisition or sale of the Shares underlying the Option. Participant is hereby
advised to consult with his or her own personal tax, legal and financial advisers regarding his or her participation in the Plan before taking any action related to the Plan. 

14.    Data Privacy. Participant hereby explicitly and unambiguously consents to the
collection, use and transfer, in electronic or other form, of Participant’s personal data as described in this Option Agreement and any other Option grant materials by and among, as
applicable, the Service Recipients for the exclusive purpose of implementing, administering and managing Participant’s participation in the Plan.  

Participant understands that the Company and the Service Recipient may hold certain personal information about Participant, including,
but not limited to, Participant’s name, home address and telephone number, date of birth, social insurance number or other identification number, salary, nationality, job title, any Shares or directorships held in the Company, details of all
Options or any other entitlement to Shares awarded, canceled, exercised, vested, unvested or outstanding in Participant’s favor (“Data”), for the exclusive purpose of implementing, administering and managing the Plan.

 Participant understands that Data may be transferred to a stock plan service provider, as may be selected by the Company in
the future, assisting the Company with the implementation, administration and management of the Plan. Participant understands that the recipients of the Data may be located in the United States or elsewhere, and that the recipients’ country of
operation (e.g., the United States) may have different data privacy laws and protections than Participant’s country. Participant understands that if he or she resides outside the United States, he or she may request a list with the names and
addresses of any potential recipients of the Data by contacting his or her local human resources representative. Participant authorizes the Company, any stock plan service provider selected by the Company and any other possible recipients which may
assist the Company (presently or in the future) with implementing, administering and managing the Plan to receive, possess, use, retain and transfer the Data, in electronic or other form, for the sole purpose of implementing, administering and
managing his or her participation in the Plan. Participant understands that Data will be held only as long as is necessary to implement, administer and manage Participant’s participation in the Plan. Participant understands if he or she resides
outside the United States, he or she may, at any time, view Data, request additional information about the storage and processing of Data, require any necessary amendments to Data or refuse or withdraw the consents herein, in any case without cost,
by contacting in writing his or her local human resources representative. Further, Participant understands that he or she is providing the consents herein on a purely voluntary basis. If Participant does not consent, or if Participant later seeks to
revoke his or her consent, his or her status as a Service Provider and career with the Service Recipient will not be adversely affected. The only adverse consequence of refusing or withdrawing Participant’s consent is that the Company would not
be able to grant Participant Options or other equity awards or administer or maintain such awards. Therefore, Participant understands that refusing or withdrawing his or her consent may affect Participant’s ability to participate in the Plan.
For more information on the consequences of Participant’s refusal to consent or withdrawal of consent, Participant understands that he or she may contact his or her local human resources representative. 

  
 -7- 

 15.    Address for Notices. Any notice to be given to the Company
under the terms of this Option Agreement will be addressed to the Company at ALX Oncology Holdings Inc., [insert address], or at such other address as the Company may hereafter designate in writing. 

16.    Successors and Assigns. The Company may assign any of its rights under this Option Agreement to single or
multiple assignees, and this OPtion Agreement shall inure to the benefit of the successors and assigns of the Company. Subject to the restriction on transfer herein set forth, this Option Agreement shall be binding upon the executors,
administrators, heirs, successors and assigns of Participant. The rights and obligations of Participant under this Option Agreement may be assigned only with the prior written consent of the Company. 

17.    Additional Conditions to Issuance of Stock. If at any time the Company will determine, in its discretion,
that the listing, registration, qualification or rule compliance of the Shares upon any securities exchange or under any state, federal or non-U.S. law, the tax code and related regulations or under the
rulings or regulations of the U.S. Securities and Exchange Commission or any other governmental regulatory body or the clearance, consent or approval of the U.S. Securities and Exchange Commission or any other governmental regulatory authority is
necessary or desirable as a condition to the exercise of the Options or the purchase by, or issuance of Shares, to Participant (or his or her estate) hereunder, such exercise, purchase or issuance will not occur unless and until such listing,
registration, qualification, rule compliance, clearance, consent or approval will have been completed, effected or obtained free of any conditions not acceptable to the Company. Subject to the terms of the Option Agreement and the Plan, the Company
will not be required to issue any certificate or certificates for (or make any entry on the books of the Company or of a duly authorized transfer agent of the Company of) the Shares hereunder prior to the lapse of such reasonable period of time
following the date of exercise of the Option as the Administrator may establish from time to time for reasons of administrative convenience. 

18.    Language. If Participant has received this Option Agreement or any other document related to the Plan
translated into a language other than English and if the meaning of the translated version is different than the English version, the English version will control. 

19.    Interpretation. The Administrator will have the power to interpret the Plan and this Option Agreement
and to adopt such rules for the administration, interpretation and application of the Plan as are consistent therewith and to interpret or revoke any such rules (including, but not limited to, the determination of whether or not any Shares subject
to the Option have vested). All actions taken and all interpretations and determinations made by the Administrator in good faith will be final and binding upon Participant, the Company and all other interested persons. Neither the Administrator nor
any person acting on behalf of the Administrator will be personally liable for any action, determination or interpretation made in good faith with respect to the Plan or this Option Agreement. 

20.    Electronic Delivery and Acceptance. The Company may, in its sole discretion, decide to deliver any
documents related to the Option awarded under the Plan or future options that may be awarded under the Plan by electronic means or require Participant to participate in the Plan by electronic means. Participant hereby consents to receive such
documents by electronic delivery and agrees to participate in the Plan through any on-line or electronic system established and maintained by the Company or a third party designated by the Company. 

  
 -8- 

 21.    Captions. Captions provided herein are for
convenience only and are not to serve as a basis for interpretation or construction of this Option Agreement. 

22.    Option Agreement Severable. In the event that any provision in this Option Agreement will be held
invalid or unenforceable, such provision will be severable from, and such invalidity or unenforceability will not be construed to have any effect on, the remaining provisions of this Option Agreement. 

23.    Amendment, Suspension or Termination of the Plan. By accepting this Option, Participant expressly
warrants that he or she has received an Option under the Plan, and has received, read and understood a description of the Plan. Participant understands that the Plan is discretionary in nature and may be amended, suspended or terminated by the
Administrator at any time. 
 24.    Country Addendum. Notwithstanding any provisions in this Option
Agreement, this Option shall be subject to any special terms and conditions set forth in an appendix (if any) to this Option Agreement for any country whose laws are applicable to Participant and this Option (as determined by the Administrator in
its sole discretion) (the “Country Addendum”). Moreover, if Participant relocates to one of the countries included in the Country Addendum (if any), the special terms and conditions for such country will apply to Participant, to the
extent the Company determines that the application of such terms and conditions is necessary or advisable for legal or administrative reasons. The Country Addendum (if any) constitutes a part of this Option Agreement. 

25.    Modifications to the Option Agreement. This Option Agreement constitutes the entire understanding of
the parties on the subjects covered. Participant expressly warrants that he or she is not accepting this Option Agreement in reliance on any promises, representations, or inducements other than those contained herein. Modifications to this Option
Agreement or the Plan can be made only in an express written contract executed by a duly authorized officer of the Company. Notwithstanding anything to the contrary in the Plan or this Option Agreement, the Company reserves the right to revise this
Option Agreement as it deems necessary or advisable, in its sole discretion and without the consent of Participant, to comply with Code Section 409A or to otherwise avoid imposition of any additional tax or income recognition under
Section 409A of the Code in connection with the Option. 
 26.    No Waiver. Either party’s
failure to enforce any provision or provisions of this Option Agreement shall not in any way be construed as a waiver of any such provision or provisions, nor prevent that party from thereafter enforcing each and every other provision of this Option
Agreement. The rights granted both parties herein are cumulative and shall not constitute a waiver of either party’s right to assert all other legal remedies available to it under the circumstances. 

27.    Tax Consequences. Participant has reviewed with his or her own tax advisers the U.S. federal, state,
local and non-U.S. tax consequences of this investment and the transactions contemplated by this Option Agreement. With respect to such matters, Participant relies solely on such advisers and not on any
statements or representations of the Company or any of its agents, written or oral. Participant understands that Participant (and not the Company) shall be responsible for Participant’s own tax liability that may arise as a result of this
investment or the transactions contemplated by this Option Agreement. 

*        *        * 

  
 -9- 

 EXHIBIT B 

ALX ONCOLOGY HOLDINGS INC. 

AMENDED AND RESTATED 2020 EQUITY INCENTIVE PLAN 

STOCK OPTION AGREEMENT 

EXERCISE NOTICE 
 ALX Oncology
Holdings Inc. 
 [address] 
 Attention: [Stock Administration]

 1.    Exercise of Option. Effective as of today,
                            ,         , the undersigned
(“Participant”) hereby elects to exercise Participant’s option (the “Option”) to purchase
                             shares of the Common Stock (the “Shares”) of ALX
Oncology Holdings Inc. (the “Company”) under and pursuant to the Amended and Restated 2020 Equity Incentive Plan (the “Plan”) and the Stock Option Agreement dated
                            ,         , including the
Notice of Stock Option Grant, and the Terms and Conditions of Stock Option Grant attached as Exhibit A thereto and other exhibits, appendices and addenda attached thereto (the “Option Agreement”). Unless otherwise defined
herein, capitalized terms used in this Exercise Notice will be ascribed the same defined meanings as set forth in the Option Agreement (or the Plan or other written agreement as specified in the Option Agreement). 

2.    Delivery of Payment. Participant herewith delivers to the Company the full purchase price of the Shares, as
set forth in the Option Agreement, and any Tax Obligations to be paid in connection with the exercise of the Option. 

3.    Representations of Participant. Participant acknowledges that Participant has received, read and understood
the Plan and the Option Agreement and agrees to abide by and be bound by their terms and conditions. 
 4.    Rights
as Stockholder. Until the issuance of the Shares (as evidenced by the appropriate entry on the books of the Company or of a duly authorized transfer agent of the Company), no right to vote or receive dividends or any other rights as a
stockholder shall exist with respect to the Common Stock subject to the Option, notwithstanding the exercise of the Option. The Shares so acquired shall be issued to Participant as soon as practicable after the Option is exercised in accordance with
the Option Agreement. No adjustment shall be made for a dividend or other right for which the record date is prior to the date of issuance except as provided in Section 15 of the Plan. 

5.    Tax Consultation. Participant understands that Participant may suffer adverse tax consequences as a result of
Participant’s purchase or disposition of the Shares. Participant represents that Participant has consulted with any tax consultants Participant deems advisable in connection with the purchase or disposition of the Shares and that Participant is
not relying on the Company for any tax advice. 

 6.    Interpretation. Any dispute regarding the interpretation of
this Exercise Notice shall be submitted by Participant or by the Company forthwith to the Administrator, which shall review such dispute at its next regular meeting. The resolution of such a dispute by the Administrator shall be final and binding on
all parties to the maximum extent permitted by law. 
 7.    Governing Law; Severability. This Exercise Notice is
governed by the internal substantive laws, but not the choice of law rules, of Delaware. In the event that any provision hereof becomes or is declared by a court of competent jurisdiction to be illegal, unenforceable or void, this Exercise Notice
shall continue in full force and effect. 
 8.    Entire Agreement. The Plan and Option Agreement are
incorporated herein by reference. The Plan and the Option Agreement (including this Exercise Notice and any exhibits, appendices, and addenda attached to the Notice of Stock Option Grant of the Option Agreement) constitute the entire agreement of
the parties with respect to the subject matter hereof and supersede in their entirety all prior undertakings and agreements of the Company and Participant with respect to the subject matter hereof, and may not be modified adversely to
Participant’s interest except by means of a writing signed by the Company and Participant. 
  

			
	Submitted by:	    	Accepted by:
	PARTICIPANT	    	ALX ONCOLOGY HOLDINGS INC.
		
	  
 Signature
	    	  
 By

		
	  
 Print Name
	    	  
 Print Name

		
		    	  
 Title

		
	Address:	    	Address:
		
	  
	    	  

		
	  
	    	  

		
		    	  
 Date
Received

  
 -2- 

 APPENDIX A 

ALX ONCOLOGY HOLDINGS INC. 

AMENDED AND RESTATED 2020 EQUITY INCENTIVE PLAN 

COUNTRY ADDENDUM TO STOCK OPTION AGREEMENT 

Unless otherwise defined herein, capitalized terms used in this Country Addendum to Stock Option Agreement (the “Country
Addendum”) will be ascribed the same defined meanings as set forth in the Option Agreement of which this Country Addendum forms a part (or the Plan or other written agreement as specified in the Option Agreement). 

Terms and Conditions 
 This Country
Addendum includes additional terms and conditions that govern this Option awarded to Participant under the Plan if he or she resides and/or works in one of the countries listed below. If Participant is a citizen or resident (or is considered as such
for local law purposes) of a country other than the country in which Participant is currently residing and/or working, or if Participant relocates to another country after the Options is granted, the Company, in its discretion, shall determine to
what extent the terms and conditions contained herein shall apply to Participant. 
 Notifications 

This Country Addendum also may include information regarding exchange controls and certain other issues of which Participant should be aware
with respect to participation in the Plan. The information is based on the securities, exchange control, and other Applicable Laws in effect in the respective countries as of
[            ], 2020. Such Applicable Laws often are complex and change frequently. As a result, the Company strongly recommends that Participant not rely on the information in this
Country Addendum as the only source of information relating to the consequences of Participant’s participation in the Plan because the information may be out of date at the time Participant vests in or exercises the Option or sells Shares
acquired under the Plan. 
 In addition, the information contained in this Country Addendum is general in nature and may not apply to
Participant’s particular situation, and the Company is not in a position to assure Participant of a particular result. Participant should seek appropriate professional advice as to how the Applicable Laws in Participant’s country may apply
to his or her situation. 
 Finally, if Participant is a citizen or resident of a country other than the one in which Participant currently
is residing and/or working, transfers residence and/or employment to another country after this Option is awarded, or is considered a resident of another country for local law purposes, the information in this Country Addendum may not apply to
Participant in the same manner.] 
 [Jurisdiction specific provisions to be added by local counsel.] 

 ALX ONCOLOGY HOLDINGS INC. 

AMENDED AND RESTATED 2020 EQUITY INCENTIVE PLAN 

RESTRICTED STOCK UNIT AGREEMENT 

NOTICE OF RESTRICTED STOCK UNIT GRANT 

Unless otherwise defined herein, the terms defined in the ALX Oncology Holdings Inc. Amended and Restated 2020 Equity Incentive Plan (the
“Plan”) will have the same defined meanings in this Restricted Stock Unit Agreement which includes the Notice of Restricted Stock Unit Grant (the “Notice of Grant”), the Terms and Conditions of Restricted Stock Unit
Grant, attached hereto as Exhibit A, and all other exhibits, appendices, and addenda attached hereto (the “Award Agreement”). 

Participant Name: 

Address: 
 The undersigned
Participant has been granted an Award of Restricted Stock Units, subject to the terms and conditions of the Plan and this Award Agreement, as follows: 
  

					
	         Grant Number:	 	                                      
                                  	  	
			
	         Date of Grant:	 	                                      
                                  	  	
			
	         Vesting Commencement Date:	 	                                      
                                  	  	
			
	         Total Number of Restricted Stock Units:	 	                                      
                                  	  	

 Vesting Schedule: 

For purposes of this Agreement, “Quarterly Vesting Dates” with respect to any calendar year means [Month Day], [Month Day],
[Month Day], and [Month Day], provided, to the extent any of such dates occurs on a weekend day or U.S. federal holiday, the Quarterly Vesting Date will be deemed to occur instead on the immediately following day that is not a weekend day or U.S.
federal holiday. 
 Subject to any acceleration provisions contained in the Plan, this Award Agreement or any other written agreement
between Participant and the Company (or any Parent or Subsidiary of the Company, as applicable) governing the terms of this Award, the Restricted Stock Units will be scheduled to vest according to the following vesting schedule: 

[Insert vesting schedule] 
 By
Participant’s signature and the signature of the representative of the Company below, Participant and the Company agree that this Award of Restricted Stock Units is granted under and governed by the terms and conditions of the Plan and this
Award Agreement, including the Terms 

 
and Conditions of Restricted Stock Unit Grant, attached hereto as Exhibit A, and all other exhibits, appendices and addenda attached hereto, all of which are made a part of this document.
Participant acknowledges receipt of a copy of the Plan. Participant has reviewed the Plan and this Award Agreement in their entirety, has had an opportunity to obtain the advice of counsel prior to executing this Award Agreement and fully
understands all provisions of the Plan and this Award Agreement. Participant hereby agrees to accept as binding, conclusive and final all decisions or interpretations of the Administrator upon any questions relating to the Plan or this Award
Agreement. Participant further agrees to notify the Company upon any change in Participant’s residence address indicated below. 
  

			
	PARTICIPANT	    	ALX ONCOLOGY HOLDINGS INC.
		
	  
 Signature
	    	  
 Signature

		
	  
 Print Name
	    	  
 Print Name

		
		    	  
 Title

		
	Residence Address:	    	
		
	  
	    	
		
	  
	    	

  
 - 2 - 

 EXHIBIT A 

ALX ONCOLOGY HOLDINGS INC. 

AMENDED AND RESTATED 2020 EQUITY INCENTIVE PLAN 

RESTRICTED STOCK UNIT AGREEMENT 

TERMS AND CONDITIONS OF RESTRICTED STOCK UNIT GRANT 

1.    Grant of Restricted Stock Units. The Company hereby grants to the individual (“Participant”)
named in the Notice of Restricted Stock Unit Grant of this Award Agreement (the “Notice of Grant”) under the Plan an Award of Restricted Stock Units, and subject to the terms and conditions of this Award Agreement and the Plan,
which is incorporated herein by reference. Subject to Section 20 of the Plan, in the event of a conflict between the terms and conditions of the Plan and this Award Agreement, the terms and conditions of the Plan shall prevail. 

2.    Company’s Obligation to Pay. Each Restricted Stock Unit represents the right to receive a Share on the
date it vests. Unless and until the Restricted Stock Units will have vested in the manner set forth in Section 3 or 4, Participant will have no right to payment of any such Restricted Stock Units. Prior to actual payment of any vested
Restricted Stock Units, such Restricted Stock Unit will represent an unsecured obligation of the Company, payable (if at all) only from the general assets of the Company. 

3.    Vesting Schedule. Except as provided in Section 4, and subject to Section 5, the Restricted Stock
Units awarded by this Award Agreement will vest in accordance with the vesting provisions set forth in the Notice of Grant. Unless specifically provided otherwise in this Award Agreement or other written agreement between Participant and the Company
or any Parent or Subsidiary of the Company, as applicable, governing the terms of this Award, Restricted Stock Units scheduled to vest on a certain date or upon the occurrence of a certain condition will not vest in accordance with any of the
provisions of this Award Agreement, unless Participant will have been continuously a Service Provider from the Date of Grant until the date such vesting occurs. 

4.    Payment after Vesting. 

(a)    General Rule. Subject to Section 7, any Restricted Stock Units that vest will be paid to Participant (or
in the event of Participant’s death, to his or her properly designated beneficiary or estate) in whole Shares. Subject to the provisions of Section 4(c), such vested Restricted Stock Units shall be paid in whole Shares as soon as
practicable after vesting, but in each such case within sixty (60) days following the vesting date. In no event will Participant be permitted, directly or indirectly, to specify the taxable year of payment of any Restricted Stock Units payable
under this Award Agreement. 
 (b)    Discretionary Acceleration. The Administrator, in its discretion, may
accelerate the vesting of the balance, or some lesser portion of the balance, of the unvested Restricted Stock Units at any time, subject to the terms of the Plan. If so accelerated, such Restricted Stock Units will be considered as having vested as
of the date specified by the Administrator. 

 (c)    Section 409A. 

(i)    If Participant is a U.S. taxpayer, the payment of Shares vesting pursuant to this Award Agreement (including any
discretionary acceleration under Section 4(b)) shall in all cases be paid at a time or in a manner that is exempt from, or complies with, Section 409A. The prior sentence may be superseded in a future agreement or amendment to this Award
Agreement only by direct and specific reference to such sentence. 
 (ii)    Notwithstanding anything in the Plan or
this Award Agreement or any other agreement (whether entered into before, on or after the Date of Grant), if the vesting of the balance, or some lesser portion of the balance, of the Restricted Stock Units is accelerated in connection with the
termination of Participant’s status as a Service Provider (provided that such termination is a “separation from service” within the meaning of Section 409A, as determined by the Administrator), other than due to
Participant’s death, and if (x) Participant is a U.S. taxpayer and a “specified employee” within the meaning of Section 409A at the time of such termination as a Service Provider and (y) the payment of such accelerated
Restricted Stock Units will result in the imposition of additional tax under Section 409A if paid to Participant on or within the six (6) month period following the cessation of Participant’s status as a Service Provider, then the
payment of such accelerated Restricted Stock Units will not be made until the date six (6) months and one (1) day following the date of cessation of Participant’s status as a Service Provider, unless Participant dies following his or
her termination as a Service Provider, in which case, the Restricted Stock Units will be paid in Shares to Participant’s estate as soon as practicable following his or her death. 

(iii)    It is the intent of this Award Agreement that it and all payments and benefits to U.S. taxpayers hereunder be
exempt from, or comply with, the requirements of Section 409A so that none of the Restricted Stock Units provided under this Award Agreement or Shares issuable thereunder will be subject to the additional tax imposed under Section 409A,
and any ambiguities or ambiguous terms herein will be interpreted to be so exempt or so comply. Each payment payable under this Award Agreement is intended to constitute a separate payment for purposes of Treasury Regulations Section 1.409A-2(b)(2). To the extent necessary to comply with Section 409A, references to termination of Participant’s status as a Service Provider, termination of employment, or similar phrases will
be references to Participant’s “separation from service” within the meaning of Section 409A. In no event will the Company or any Parent or Subsidiary of the Company have any responsibility, liability, or obligation to reimburse,
indemnify, or hold harmless Participant (or any other person) for any taxes, penalties and interest that may be imposed, or other costs that may be incurred, as a result of Section 409A. 

5.    Forfeiture Upon Termination as a Service Provider. Unless specifically provided otherwise in this Award
Agreement or other written agreement between Participant and the Company or any of its Subsidiaries or Parents, as applicable, governing the terms of this Award, if Participant ceases to be a Service Provider for any or no reason, the then-unvested
Restricted Stock Units awarded by this Award Agreement will thereupon be forfeited at no cost to the Company and Participant will have no further rights thereunder. 

6.    Death of Participant. Any distribution or delivery to be made to Participant under this Award Agreement, if
Participant is then deceased, will be made to Participant’s designated beneficiary, or if no beneficiary survives Participant, the administrator or executor of Participant’s 

  
 -2- 

 
estate. Any such transferee must furnish the Company with (a) written notice of his or her status as transferee, and (b) evidence satisfactory to the Company to establish the validity
of the transfer and compliance with any laws or regulations pertaining to said transfer. 
 7.    Tax Obligations

 (a)    Responsibility for Taxes. Participant acknowledges that, regardless of any action taken by the Company
or, if different, Participant’s employer or any Parent or Subsidiary of the Company to which Participant is providing services (together, the “Service Recipients”), the ultimate liability for any tax and/or social insurance
liability obligations and requirements in connection with the Restricted Stock Units, including, without limitation, (i) all federal, state, and local taxes (including Participant’s Federal Insurance Contributions Act (FICA) obligations)
that are required to be withheld by any Service Recipient or other payment of tax-related items related to Participant’s participation in the Plan and legally applicable to Participant,
(ii) Participant’s and, to the extent required by any Service Recipient, the Service Recipient’s fringe benefit tax liability, if any, associated with the grant, vesting, or settlement of the Restricted Stock Units or sale of Shares,
and (iii) any other Service Recipient taxes the responsibility for which Participant has, or has agreed to bear, with respect to the Restricted Stock Units (or settlement thereof or issuance of Shares thereunder) (collectively, the “Tax
Obligations”), is and remains Participant’s sole responsibility and may exceed the amount actually withheld by the applicable Service Recipient(s). Participant further acknowledges that no Service Recipient (A) makes any
representations or undertakings regarding the treatment of any Tax Obligations in connection with any aspect of the Restricted Stock Units, including, but not limited to, the grant, vesting or settlement of the Restricted Stock Units, the subsequent
sale of Shares acquired pursuant to such settlement and the receipt of any dividends or other distributions, and (B) makes any commitment to and is under any obligation to structure the terms of the grant or any aspect of the Restricted Stock
Units to reduce or eliminate Participant’s liability for Tax Obligations or achieve any particular tax result. Further, if Participant is subject to Tax Obligations in more than one jurisdiction between the Date of Grant and the date of any
relevant taxable or tax withholding event, as applicable, Participant acknowledges that the applicable Service Recipient(s) (or former employer, as applicable) may be required to withhold or account for Tax Obligations in more than one jurisdiction.
If Participant fails to make satisfactory arrangements for the payment of any required Tax Obligations hereunder at the time of the applicable taxable event, Participant acknowledges and agrees that the Company may refuse to issue or deliver the
Shares. 
 (b)    Tax Withholding. Pursuant to such procedures as the Administrator may specify from time to
time, the Service Recipient will withhold the amount required to be withheld for the payment of Tax Obligations. The Administrator, in its sole discretion and pursuant to such procedures as it may specify from time to time, may permit Participant to
satisfy such Tax Obligations, in whole or in part (without limitation), if permissible by applicable local law, by: (i) paying cash in U.S. dollars, (ii) electing to have the Company withhold otherwise deliverable Shares having a fair
market value equal to the minimum amount that is necessary to meet the withholding requirement for such Tax Obligations (or such greater amount as Participant may elect if permitted by the Administrator, if such greater amount would not result in
adverse financial accounting consequences), (iii) withholding the amount of such Tax Obligations from Participant’s wages or other cash compensation paid to Participant by the applicable Service Recipient(s), (iv) delivering to the Company
Shares that Participant owns and that already have vested with a fair market value equal to the Tax Obligations (or such greater amount as Participant may elect if permitted by the Administrator, 

  
 -3- 

 
if such greater amount would not result in adverse financial accounting consequences), (v) selling a sufficient number of such Shares otherwise deliverable to Participant, through such means
as the Company may determine in its sole discretion (whether through a broker or otherwise) equal to the minimum amount that is necessary to meet the withholding requirement for such Tax Obligations (or such greater amount as Participant may elect
if permitted by the Administrator, if such greater amount would not result in adverse financial accounting consequences), or (vi) such other means as the Administrator deems appropriate. If the Tax Obligations are satisfied by withholding in
Shares, for tax purposes, Participant is deemed to have been issued the full number of Shares subject to the vested Restricted Stock Units, notwithstanding that a number of the Shares are held back solely for the purpose of paying the Tax
Obligations. To the extent determined appropriate by the Administrator in its discretion, the Administrator will have the right (but not the obligation) to satisfy any Tax Obligations by reducing the number of Shares otherwise deliverable to
Participant. 
 (c)    Tax Consequences. Participant has reviewed with his or her own tax advisers the U.S.
federal, state, local and non-U.S. tax consequences of this investment and the transactions contemplated by this Award Agreement. With respect to such matters, Participant relies solely on such advisers and
not on any statements or representations of the Company or any of its agents, written or oral. Participant understands that Participant (and not the Company) shall be responsible for Participant’s own tax liability that may arise as a result of
this investment or the transactions contemplated by this Award Agreement. 
 (d)    Company’s Obligation to
Deliver Shares. For clarification purposes, in no event will the Company issue Participant any Shares unless and until arrangements satisfactory to the Administrator have been made for the payment of Participant’s Tax Obligations. If
Participant fails to make satisfactory arrangements for the payment of such Tax Obligations hereunder at the time any applicable Restricted Stock Units otherwise are scheduled to vest pursuant to Sections 3 or 4 or Participant’s Tax Obligations
otherwise become due, Participant permanently will forfeit such Restricted Stock Units to which Participant’s Tax Obligation relates and any right to receive Shares thereunder and such Restricted Stock Units will be returned to the Company at
no cost to the Company. Participant acknowledges and agrees that the Company may refuse to issue or deliver the Shares if such Tax Obligations are not delivered at the time they are due. 

8.    Rights as Stockholder. Neither Participant nor any person claiming under or through Participant will have any
of the rights or privileges of a stockholder of the Company in respect of any Shares deliverable hereunder unless and until certificates representing such Shares (which may be in book entry form) will have been issued, recorded on the records of the
Company or its transfer agents or registrars, and delivered to Participant (including through electronic delivery to a brokerage account). After such issuance, recordation and delivery, Participant will have all the rights of a stockholder of the
Company with respect to voting such Shares and receipt of dividends and distributions on such Shares. 
 9.    No
Guarantee of Continued Service. PARTICIPANT ACKNOWLEDGES AND AGREES THAT THE VESTING OF THE RESTRICTED STOCK UNITS PURSUANT TO THE VESTING SCHEDULE HEREOF IS EARNED ONLY BY CONTINUING AS A SERVICE PROVIDER, WHICH UNLESS PROVIDED OTHERWISE UNDER
APPLICABLE LAWS IS AT THE WILL OF THE APPLICABLE SERVICE RECIPIENT AND NOT THROUGH THE ACT OF BEING HIRED, BEING GRANTED THIS RESTRICTED STOCK UNIT AWARD OR 

  
 -4- 

 
ACQUIRING SHARES HEREUNDER. PARTICIPANT FURTHER ACKNOWLEDGES AND AGREES THAT THIS AWARD AGREEMENT, THE TRANSACTIONS CONTEMPLATED HEREUNDER AND THE VESTING SCHEDULE SET FORTH HEREIN DO NOT
CONSTITUTE AN EXPRESS OR IMPLIED PROMISE OF CONTINUED ENGAGEMENT AS A SERVICE PROVIDER FOR THE VESTING PERIOD, FOR ANY PERIOD, OR AT ALL, AND SHALL NOT INTERFERE IN ANY WAY WITH PARTICIPANT’S RIGHT OR THE RIGHT OF ANY SERVICE RECIPIENT TO
TERMINATE PARTICIPANT’S RELATIONSHIP AS A SERVICE PROVIDER, SUBJECT TO APPLICABLE LAW, WHICH TERMINATION, UNLESS PROVIDED OTHERWISE UNDER APPLICABLE LAW, MAY BE AT ANY TIME, WITH OR WITHOUT CAUSE. 

10.    Grant is Not Transferable. Except to the limited extent provided in Section 6, this Award and the
rights and privileges conferred hereby will not be transferred, assigned, pledged or hypothecated in any way (whether by operation of law or otherwise) and will not be subject to sale under execution, attachment or similar process. Upon any attempt
to transfer, assign, pledge, hypothecate or otherwise dispose of this Award, or any right or privilege conferred hereby, or upon any attempted sale under any execution, attachment or similar process, this Award and the rights and privileges
conferred hereby immediately will become null and void. 
 11.    Nature of Grant. In accepting this Award of
Restricted Stock Units, Participant acknowledges, understands and agrees that: 
 (a)    the grant of the Restricted
Stock Units is voluntary and occasional and does not create any contractual or other right to receive future grants of Restricted Stock Units, or benefits in lieu of Restricted Stock Units, even if Restricted Stock Units have been granted in the
past; 
 (b)    all decisions with respect to future Restricted Stock Units or other grants, if any, will be at the sole
discretion of the Administrator; 
 (c)    Participant is voluntarily participating in the Plan; 

(d)    the Restricted Stock Units and the Shares subject to the Restricted Stock Units are not intended to replace any
pension rights or compensation; 
 (e)    the Restricted Stock Units and the Shares subject to the Restricted Stock
Units, and the income and value of same, are not part of normal or expected compensation for purposes of calculating any severance, resignation, termination, redundancy, dismissal,
end-of-service payments, bonuses, long-service awards, pension or retirement or welfare benefits or similar payments; 

(f)    the future value of the Shares underlying the Restricted Stock Units is unknown, indeterminable and cannot be
predicted; 
 (g)    for purposes of the Restricted Stock Units, Participant’s status as a Service Provider will be
considered terminated as of the date Participant is no longer actively providing services to the Company or any Parent or Subsidiary (regardless of the reason for such termination and whether or not later found to be invalid or in breach of
employment laws in the jurisdiction where Participant is a Service Provider or the terms of Participant’s employment or service agreement, if any), and unless otherwise expressly provided in this Award Agreement (including by reference in the

  
 -5- 

 
Notice of Grant to other arrangements or contracts) or determined by the Administrator, Participant’s right to vest in the Restricted Stock Units under the Plan, if any, will terminate as of
such date and will not be extended by any notice period (e.g., Participant’s period of service would not include any contractual notice period or any period of “garden leave” or similar period mandated under employment laws in the
jurisdiction where Participant is a Service Provider or the terms of Participant’s employment or service agreement, if any, unless Participant is providing bona fide services during such time); the Administrator shall have the exclusive
discretion to determine when Participant is no longer actively providing services for purposes of this Award of Restricted Stock Units (including whether Participant may still be considered to be providing services while on a leave of absence and
consistent with local law); 
 (h)    unless otherwise provided in the Plan or by the Administrator in its discretion,
the Restricted Stock Units and the benefits evidenced by this Award Agreement do not create any entitlement to have the Restricted Stock Units or any such benefits transferred to, or assumed by, another company nor be exchanged, cashed out or
substituted for, in connection with any corporate transaction affecting the Shares; and 
 (i)    the following
provisions apply only if Participant is providing services outside the United States: 
 (i)    the Restricted Stock
Units and the Shares subject to the Restricted Stock Units are not part of normal or expected compensation or salary for any purpose; 

(ii)    Participant acknowledges and agrees that no Service Recipient shall be liable for any foreign exchange rate
fluctuation between Participant’s local currency and the United States Dollar that may affect the value of the Restricted Stock Units or of any amounts due to Participant pursuant to the settlement of the Restricted Stock Units or the
subsequent sale of any Shares acquired upon settlement; and 
 (iii)    no claim or entitlement to compensation or
damages shall arise from forfeiture of the Restricted Stock Units resulting from the termination of Participant’s status as a Service Provider (for any reason whatsoever whether or not later found to be invalid or in breach of employment laws
in the jurisdiction where Participant is a Service Provider or the terms of Participant’s employment or service agreement, if any), and in consideration of the grant of the Restricted Stock Units to which Participant is otherwise not
entitled, Participant irrevocably agrees never to institute any claim against any Service Recipient, waives his or her ability, if any, to bring any such claim, and releases each Service Recipient from any such claim; if, notwithstanding the
foregoing, any such claim is allowed by a court of competent jurisdiction, then, by participating in the Plan, Participant shall be deemed irrevocably to have agreed not to pursue such claim and agrees to execute any and all documents necessary to
request dismissal or withdrawal of such claim. 
 12.    No Advice Regarding Grant. The Company is not providing
any tax, legal or financial advice, nor is the Company making any recommendations regarding Participant’s participation in the Plan, or Participant’s acquisition or sale of the Shares underlying the Restricted Stock Units. Participant is
hereby advised to consult with his or her own personal tax, legal and financial advisers regarding his or her participation in the Plan before taking any action related to the Plan. 

  
 -6- 

 13.    Data Privacy. Participant hereby
explicitly and unambiguously consents to the collection, use and transfer, in electronic or other form, of Participant’s personal data as described in this Award Agreement and any other Restricted Stock Unit grant materials by and among, as
applicable, the Service Recipients for the exclusive purpose of implementing, administering and managing Participant’s participation in the Plan. 

Participant understands that the Company and the Service Recipient may hold certain personal information about Participant, including,
but not limited to, Participant’s name, home address and telephone number, date of birth, social insurance number or other identification number, salary, nationality, job title, any Shares or directorships held in the Company, details of all
Restricted Stock Units or any other entitlement to Shares awarded, canceled, exercised, vested, unvested or outstanding in Participant’s favor (“Data”), for the exclusive purpose of implementing, administering and managing the
Plan. 
 Participant understands that Data may be transferred to a stock plan service provider, as may be selected by the
Company in the future, assisting the Company with the implementation, administration and management of the Plan. Participant understands that the recipients of the Data may be located in the United States or elsewhere, and that the recipients’
country of operation (e.g., the United States) may have different data privacy laws and protections than Participant’s country. Participant understands that if he or she resides outside the United States, he or she may request a list with the
names and addresses of any potential recipients of the Data by contacting his or her local human resources representative. Participant authorizes the Company, any stock plan service provider selected by the Company and any other possible recipients
which may assist the Company (presently or in the future) with implementing, administering and managing the Plan to receive, possess, use, retain and transfer the Data, in electronic or other form, for the sole purpose of implementing, administering
and managing his or her participation in the Plan. Participant understands that Data will be held only as long as is necessary to implement, administer and manage Participant’s participation in the Plan. Participant understands if he or she
resides outside the United States, he or she may, at any time, view Data, request additional information about the storage and processing of Data, require any necessary amendments to Data or refuse or withdraw the consents herein, in any case
without cost, by contacting in writing his or her local human resources representative. Further, Participant understands that he or she is providing the consents herein on a purely voluntary basis. If Participant does not consent, or if Participant
later seeks to revoke his or her consent, his or her status as a Service Provider and career with the Service Recipient will not be adversely affected. The only adverse consequence of refusing or withdrawing Participant’s consent is that the
Company would not be able to grant Participant Restricted Stock Units or other equity awards or administer or maintain such awards. Therefore, Participant understands that refusing or withdrawing his or her consent may affect Participant’s
ability to participate in the Plan. For more information on the consequences of Participant’s refusal to consent or withdrawal of consent, Participant understands that he or she may contact his or her local human resources representative.

 14.    Address for Notices. Any notice to be given to the Company under the terms of this Award
Agreement will be addressed to the Company at ALX Oncology Holdings Inc., [insert address], or at such other address as the Company may hereafter designate in writing. 

  
 -7- 

 15.    Successors and Assigns. The Company may assign any of its
rights under this Award Agreement to single or multiple assignees, and this Award Agreement shall inure to the benefit of the successors and assigns of the Company. Subject to the restrictions on transfer herein set forth, this Award Agreement shall
be binding upon Participant and his or her heirs, executors, administrators, successors and assigns. The rights and obligations of Participant under this Award Agreement may be assigned only with the prior written consent of the Company. 

16.    Additional Conditions to Issuance of Stock. If at any time the Company will determine, in its discretion,
that the listing, registration, qualification or rule compliance of the Shares upon any securities exchange or under any state, federal or non-U.S. law, the tax code and related regulations or under the
rulings or regulations of the U.S. Securities and Exchange Commission or any other governmental regulatory body or the clearance, consent or approval of the U.S. Securities and Exchange Commission or any other governmental regulatory authority is
necessary or desirable as a condition to the issuance of Shares to Participant (or his or her estate) hereunder, such issuance will not occur unless and until such listing, registration, qualification, rule compliance, clearance, consent or approval
will have been completed, effected or obtained free of any conditions not acceptable to the Company. Subject to the terms of the Award Agreement and the Plan, the Company will not be required to issue any certificate or certificates for (or make any
entry on the books of the Company or of a duly authorized transfer agent of the Company of) the Shares hereunder prior to the lapse of such reasonable period of time following the date of vesting of the Restricted Stock Units as the Administrator
may establish from time to time for reasons of administrative convenience. 
 17.    Language. If Participant has
received this Award Agreement or any other document related to the Plan translated into a language other than English and if the meaning of the translated version is different than the English version, the English version will control. 

18.    Interpretation. The Administrator will have the power to interpret the Plan and this Award Agreement and to
adopt such rules for the administration, interpretation and application of the Plan as are consistent therewith and to interpret or revoke any such rules (including, but not limited to, the determination of whether or not any Restricted Stock Units
have vested). All actions taken and all interpretations and determinations made by the Administrator in good faith will be final and binding upon Participant, the Company and all other interested persons. Neither the Administrator nor any person
acting on behalf of the Administrator will be personally liable for any action, determination or interpretation made in good faith with respect to the Plan or this Award Agreement. 

19.    Electronic Delivery and Acceptance. The Company may, in its sole discretion, decide to deliver any documents
related to the Restricted Stock Units awarded under the Plan or future Restricted Stock Units that may be awarded under the Plan by electronic means or require Participant to participate in the Plan by electronic means. Participant hereby consents
to receive such documents by electronic delivery and agrees to participate in the Plan through any on-line or electronic system established and maintained by the Company or a third party designated by the
Company. 
 20.    Captions. Captions provided herein are for convenience only and are not to serve as a basis
for interpretation or construction of this Award Agreement. 

  
 -8- 

 21.    Amendment, Suspension or Termination of the Plan. By
accepting this Award, Participant expressly warrants that he or she has received an Award of Restricted Stock Units under the Plan, and has received, read and understood a description of the Plan. Participant understands that the Plan is
discretionary in nature and may be amended, suspended or terminated by the Administrator at any time. 

22.    Country Addendum. Notwithstanding any provisions in this Award Agreement, the Restricted Stock Unit grant
shall be subject to any special terms and conditions set forth in an appendix (if any) to this Award Agreement for any country whose laws are applicable to Participant and this Award of Restricted Stock Units (as determined by the Administrator in
its sole discretion) (the “Country Addendum”). Moreover, if Participant relocates to one of the countries included in the Country Addendum (if any), the special terms and conditions for such country will apply to Participant, to the
extent the Company determines that the application of such terms and conditions is necessary or advisable for legal or administrative reasons. The Country Addendum constitutes part of this Award Agreement. 

23.    Modifications to the Award Agreement. This Award Agreement constitutes the entire understanding of the
parties on the subjects covered. Participant expressly warrants that he or she is not accepting this Award Agreement in reliance on any promises, representations, or inducements other than those contained herein. Modifications to this Award
Agreement can be made only in an express written contract executed by a duly authorized officer of the Company. Notwithstanding anything to the contrary in the Plan or this Award Agreement, the Company reserves the right to revise this Award
Agreement as it deems necessary or advisable, in its sole discretion and without the consent of Participant, to comply with Section 409A or to otherwise avoid imposition of any additional tax or income recognition under Section 409A in
connection with this Award of Restricted Stock Units. 
 24.    No Waiver. Either party’s failure to enforce
any provision or provisions of this Award Agreement shall not in any way be construed as a waiver of any such provision or provisions, nor prevent that party from thereafter enforcing each and every other provision of this Award Agreement. The
rights granted both parties herein are cumulative and shall not constitute a waiver of either party’s right to assert all other legal remedies available to it under the circumstances. 

25.    Governing Law; Severability. This Award Agreement and the Restricted Stock Units are governed by the
internal substantive laws, but not the choice of law rules, of the State of Delaware. In the event that any provision hereof becomes or is declared by a court of competent jurisdiction to be illegal, unenforceable or void, this Award Agreement shall
continue in full force and effect. 
 26.    Entire Agreement. The Plan is incorporated herein by reference. The
Plan and this Award Agreement (including the exhibits, appendices, and addenda attached to the Notice of Grant) constitute the entire agreement of the parties with respect to the subject matter hereof and supersede in their entirety all prior
undertakings and agreements of the Company and Participant with respect to the subject matter hereof, and may not be modified adversely to the Participant’s interest except by means of a writing signed by the Company and Participant. 

*        *        * 

  
 -9- 

 APPENDIX A 

ALX ONCOLOGY HOLDINGS INC. 

AMENDED AND RESTATED 2020 EQUITY INCENTIVE PLAN 

COUNTRY ADDENDUM TO RESTRICTED STOCK UNIT AGREEMENT 

Unless otherwise defined herein, capitalized terms used in this Country Addendum to Restricted Stock Unit Agreement (the “Country
Addendum”) will be ascribed the same defined meanings as set forth in the Restricted Stock Unit Agreement of which this Country Addendum forms a part (or the Plan or other written agreement as specified in the Restricted Stock Unit
Agreement). 
 Terms and Conditions 

This Country Addendum includes additional terms and conditions that govern the Award of Restricted Stock Units granted pursuant to the terms
and conditions of the ALX Oncology Holdings Inc. Amended and Restated 2020 Equity Incentive Plan (the “Plan”) and the Restricted Stock Unit Agreement to which this Country Addendum is attached (the “Restricted Stock Unit
Agreement”) to the extent the individual to whom the Restricted Stock Units were granted (“Participant”) resides and/or works in one of the countries listed below. If the Participant is a citizen or resident (or is
considered as such for local law purposes) of a country other than the country in which the Participant is currently residing and/or working, or if the Participant relocates to another country after the Award of Restricted Stock Units is granted,
the Company, in its discretion, will determine to what extent the terms and conditions contained herein will apply to the Participant. 

Notifications 
 This Country
Addendum also may include information regarding exchange controls and certain other issues of which Participant should be aware with respect to his or her participation in the Plan. The information is based on the securities, exchange control and
other Applicable Laws in effect in the respective countries as of [            ], 2020. Such Applicable Laws often are complex and change frequently. As a result, the Company
strongly recommends that Participant not rely on the information in this Country Addendum as the only source of information relating to the consequences of Participant’s participation in the Plan because the information may be out of date at
the time Participant vests in or receives or sells the Shares covered by the Restricted Stock Units. 
 In addition, the information
contained in this Country Addendum is general in nature and may not apply to Participant’s particular situation, and the Company is not in a position to assure Participant of any particular result. Participant should seek appropriate
professional advice as to how the Applicable Laws in Participant’s country may apply to his or her situation. 
 Finally, if
Participant is a citizen or resident of a country other than the one in which Participant currently is residing and/or working, transfers residence and/or employment to another country after the grant of the Restricted Stock Units, or is considered
a resident of another country for local law purposes, the information in this Country Addendum may not apply to Participant in the same manner. 

[Jurisdiction specific provisions to be added by local counsel.] 

 ALX ONCOLOGY HOLDINGS INC. 

AMENDED AND RESTATED 2020 EQUITY INCENTIVE PLAN 

RESTRICTED STOCK AWARD AGREEMENT 

NOTICE OF RESTRICTED STOCK GRANT 

Unless otherwise defined herein, the terms defined in the ALX Oncology Holdings Inc. Amended and Restated 2020 Equity Incentive Plan (the
“Plan”) will have the same defined meanings in this Restricted Stock Award Agreement which includes the Notice of Restricted Stock Grant (the “Notice of Grant”), the Terms and Conditions of Restricted Stock Grant,
attached hereto as Exhibit A, and all other exhibits, appendices, and addenda attached hereto (the “Award Agreement”). 

Participant Name:     

Address:     

The undersigned Participant has been granted an Award of Shares of Restricted Stock, subject to the terms and conditions of the Plan and this
Award Agreement, as follows: 
  

					
	         Grant Number:	 	                                      
                                  	  	
			
	         Date of Grant:	 	                                      
                                  	  	
			
	         Vesting Commencement Date:	 	                                      
                                  	  	
			
	         Total Number of Shares of Restricted Stock:	 	                                      
                                  	  	

 Vesting Schedule: 

For purposes of this Agreement, “Quarterly Vesting Dates” with respect to any calendar year means [Month Day], [Month Day],
[Month Day], and [Month Day], provided, to the extent any of such dates occurs on a weekend day or U.S. federal holiday, the Quarterly Vesting Date will be deemed to occur instead on the immediately following day that is not a weekend day or U.S.
federal holiday. 
 Subject to any acceleration provisions contained in the Plan, this Award Agreement, or any other written agreement
between Participant and the Company (or any Parent or Subsidiary of the Company, as applicable) governing the terms of this Award, the Shares of Restricted Stock will be scheduled to vest and the Company’s right to reacquire the Restricted
Stock will be scheduled to lapse in accordance with the following schedule: 
 [Insert vesting schedule] 

 By Participant’s signature and the signature of the representative of the Company
below, Participant and the Company agree that this Award of Restricted Stock is granted under and governed by the terms and conditions of the Plan and this Award Agreement, including the Terms and Conditions of Restricted Stock Grant, attached
hereto as Exhibit A, and all other exhibits, appendices and addenda attached hereto, all of which are made a part of this document. Participant acknowledges receipt of a copy of the Plan. Participant has reviewed the Plan and this Award
Agreement in their entirety, has had an opportunity to obtain the advice of counsel prior to executing this Award Agreement and fully understands all provisions of the Plan and this Award Agreement. Participant hereby agrees to accept as binding,
conclusive and final all decisions or interpretations of the Administrator upon any questions relating to the Plan or this Award Agreement. Participant further agrees to notify the Company upon any change in Participant’s residence address
indicated below. 
  

			
	PARTICIPANT	    	ALX ONCOLOGY HOLDINGS INC.
		
	  
 Signature
	    	  
 Signature

		
	  
 Print Name
	    	  
 Print Name

		
		    	  
 Title

		
	Residence Address:	    	
		
	  
	    	
		
	  
	    	

  
 - 2 - 

 EXHIBIT A 

ALX ONCOLOGY HOLDINGS INC. 

AMENDED AND RESTATED 2020 EQUITY INCENTIVE PLAN 

RESTRICTED STOCK AWARD AGREEMENT 

TERMS AND CONDITIONS OF RESTRICTED STOCK GRANT 

1.    Grant of Shares of Restricted Stock. The Company hereby grants to the individual
(“Participant”) named in the Notice of Restricted Stock Grant of this Award Agreement (the “Notice of Grant”) under the Plan an Award of Shares of Restricted Stock, and subject to the terms and conditions of this
Award Agreement and the Plan, which is incorporated herein by reference. Subject to Section 20 of the Plan, in the event of a conflict between the terms and conditions of the Plan and this Award Agreement, the terms and conditions of the Plan
shall prevail. 
 2.    Vesting Schedule. Except as provided in Section 3 and subject to Sections 4 and
6, the Shares of Restricted Stock awarded by this Award Agreement will vest in accordance with the vesting provisions set forth in the Notice of Grant. Unless specifically provided otherwise in this Award Agreement or other written agreement between
Participant and the Company or any Parent or Subsidiary of the Company, as applicable, governing the terms of this Award, Shares of Restricted Stock scheduled to vest on a certain date or upon the occurrence of a certain condition will not vest in
accordance with any of the provisions of this Award Agreement, unless Participant will have been continuously a Service Provider from the Date of Grant until the date such vesting occurs. 

3.    Administrator Discretion. The Administrator, in its discretion, may accelerate the vesting of the balance, or
some lesser portion of the balance, of the unvested Shares of Restricted Stock subject to this Award Agreement at any time, subject to the terms of the Plan. If so accelerated, such Shares of Restricted Stock will be considered as having vested as
of the date specified by the Administrator. 
 4.    Forfeiture Upon Termination as a Service Provider. Unless
specifically provided otherwise in this Award Agreement or other written agreement between Participant and the Company or any Parent or Subsidiary of the Company, as applicable, governing the terms of this Award, the balance of the Shares of
Restricted Stock that have not vested as of the time Participant ceases to be a Service Provider for any or no reason will be forfeited and automatically transferred to and reacquired by the Company at no cost to the Company upon the date of such
termination and Participant will have no further rights thereunder. Participant will not be entitled to a refund of the price paid for the Shares of Restricted Stock, if any, returned to the Company pursuant to this Section 4. Participant
hereby appoints the Escrow Agent (as defined below) with full power of substitution, as Participant’s true and lawful attorney-in-fact with irrevocable power and
authority in the name and on behalf of Participant to take any action and execute all documents and instruments, including, without limitation, stock powers which may be necessary to transfer the certificate or certificates evidencing such unvested
Shares to the Company upon such termination of service. 

 5.    Death of Participant. Any distribution or delivery to be
made to Participant under this Award Agreement, if Participant is then deceased, will be made to Participant’s designated beneficiary, or if no beneficiary survives Participant, the administrator or executor of Participant’s estate. Any
such transferee must furnish the Company with (a) written notice of his or her status as transferee, and (b) evidence satisfactory to the Company to establish the validity of the transfer and compliance with any laws or regulations
pertaining to said transfer. 
 6.    Tax Obligations 

(a)    Responsibility for Taxes. Participant acknowledges that, regardless of any action taken by the Company or, if
different, Participant’s employer or any Parent or Subsidiary of the Company to which Participant is providing services (together, the “Service Recipients”), the ultimate liability for any tax and/or social insurance liability
obligations and requirements in connection with the Shares of Restricted Stock, including, without limitation, (i) all federal, state, and local taxes (including Participant’s Federal Insurance Contributions Act (FICA) obligations) that
are required to be withheld by any Service Recipient or other payment of tax-related items related to Participant’s participation in the Plan and legally applicable to Participant,
(ii) Participant’s and, to the extent required by any Service Recipient, the Service Recipient’s fringe benefit tax liability, if any, associated with the grant, vesting, or release from escrow of the Shares of Restricted Stock, the
filing of an 83(b) election with respect to the Shares of Restricted Stock, or the sale of Shares, and (iii) any other Service Recipient taxes the responsibility for which Participant has, or has agreed to bear, with respect to the Shares of
Restricted Stock (or release from escrow thereof or issuance of Shares thereunder) (collectively, the “Tax Obligations”), is and remains Participant’s sole responsibility and may exceed the amount actually withheld by the
applicable Service Recipient(s). Participant further acknowledges that no Service Recipient (A) makes any representations or undertakings regarding the treatment of any Tax Obligations in connection with any aspect of the Shares of Restricted
Stock, including, but not limited to, the grant, vesting or release from escrow of the Shares of Restricted Stock, the filing of an 83(b) Election (as defined below) with respect to the Shares of Restricted Stock, the subsequent sale of Shares
acquired pursuant to this Award Agreement and the receipt of any dividends or other distributions, and (B) makes any commitment to and is under any obligation to structure the terms of the grant or any aspect of the Shares of Restricted Stock
to reduce or eliminate Participant’s liability for Tax Obligations or achieve any particular tax result. Further, if Participant is subject to Tax Obligations in more than one jurisdiction between the Date of Grant and the date of any relevant
taxable or tax withholding event, as applicable, Participant acknowledges that the applicable Service Recipient(s) (or former employer, as applicable) may be required to withhold or account for Tax Obligations in more than one jurisdiction. If
Participant fails to make satisfactory arrangements for the payment of any required Tax Obligations hereunder at the time of the applicable taxable event, Participant acknowledges and agrees that the Company may refuse to issue or deliver the
Shares. Participant understands that Section 83 of the Code, taxes as ordinary income the difference between the purchase price, if any, for the Shares and the fair market value of the Shares as of each vesting date. If Participant is a U.S.
taxpayer, Participant understands that Participant may elect, for purposes of U.S. tax law, to be taxed at the time the Shares are granted rather than when such Shares vest by filing an election under Section 83(b) of the Code (the
“83(b) Election”) with the IRS within thirty (30) days from the date of grant of the Restricted Stock Award. 

  
 - 2 - 

 (b)    Tax Withholding. Notwithstanding any contrary provision of
this Award Agreement, no certificate representing the Shares of Restricted Stock may be released from the escrow established pursuant to Section 13, unless and until satisfactory arrangements (as determined by the Administrator) will have
been made by Participant with respect to the payment of all Tax Obligations. When Shares of Restricted Stock are vested, Participant generally will recognize immediate U.S. taxable income if Participant is a U.S. taxpayer. If Participant is a non-U.S. taxpayer, Participant will be subject to applicable taxes in his or her jurisdiction. Pursuant to such procedures as the Administrator may specify from time to time, the Company and/or Service Recipient
shall withhold the amount required to be withheld for the payment of Tax Obligations which the Company determines must be withheld with respect to this Award. The Administrator, in its sole discretion and pursuant to such procedures as it may
specify from time to time, may permit or require Participant to satisfy Participant’s Tax Obligations, in whole or in part (without limitation), if permissible by applicable local law, by (i) paying cash in U.S. dollars, (ii) electing
to have the Company withhold otherwise deliverable Shares having a fair market value equal to the minimum amount that is necessary to meet the withholding requirement for such Tax Obligations (or such greater amount as Participant may elect if
permitted by the Administrator, if such greater amount would not result in adverse financial accounting consequences), (iii) withholding the amount of such Tax Obligations from Participant’s wages or other cash compensation paid to Participant
by the applicable Service Recipient(s), (iv) delivering to the Company Shares that Participant owns and that already have vested with a fair market value equal to the Tax Obligations (or such greater amount as Participant may elect if permitted
by the Administrator, if such greater amount would not result in adverse financial accounting consequences), (v) selling a sufficient number of such Shares otherwise releasable to Participant, through such means as the Company may determine in its
sole discretion (whether through a broker or otherwise) equal to the minimum amount that is necessary to meet the withholding requirement for such Tax Obligations (or such greater amount as Participant may elect if permitted by the Administrator, if
such greater amount would not result in adverse financial accounting consequences), or (vi) such other means as the Administrator deems appropriate. If the Tax Obligations are satisfied by withholding in Shares, for tax purposes, Participant is
deemed to have been issued, and had released from escrow, the full number of vested Shares subject to this Award, notwithstanding that a number of the Shares are held back solely for the purpose of paying the Tax Obligations. To the extent
determined appropriate by the Administrator in its discretion, the Administrator will have the right (but not the obligation) to satisfy any Tax Obligations by reducing the number of Shares otherwise deliverable to Participant. 

(c)    Tax Consequences. Participant has reviewed with his or her own tax advisers the U.S. federal, state, local
and non-U.S. tax consequences of this investment and the transactions contemplated by this Award Agreement. With respect to such matters, Participant relies solely on such advisers and not on any statements or
representations of the Company or any of its agents, written or oral. Participant understands that Participant (and not the Company) shall be responsible for Participant’s own tax liability that may arise as a result of this investment or the
transactions contemplated by this Award Agreement. 
 (d)    Company’s Obligation to Release Shares. For
clarification purposes, in no event will the Company release Shares from the escrow established pursuant to Section 13 unless and until arrangements satisfactory to the Administrator have been made for the payment of Participant’s Tax
Obligations. If Participant fails to make satisfactory arrangements for the payment of such Tax Obligations hereunder at the time any applicable Shares of Restricted Stock otherwise are scheduled to vest pursuant to Sections 2 or 3, at the time
Participant files a timely 83(b) Election with the IRS, or Participant’s Tax Obligations otherwise become due, Participant permanently will forfeit such 

  
 - 3 - 

 
Shares of Restricted Stock to which Participant’s Tax Obligation relates and any right to receive Shares thereunder and such Shares of Restricted Stock will be returned to the Company at no
cost to the Company. Participant acknowledges and agrees that the Company may refuse to issue or deliver the Shares if such Tax Obligations are not delivered at the time they are due. 

7.    Rights as Stockholder. Neither Participant nor any person claiming under or through Participant will have any
of the rights or privileges of a stockholder of the Company in respect of any Shares deliverable hereunder unless and until certificates representing such Shares (which may be in book entry form) will have been issued, recorded on the records of the
Company or its transfer agents or registrars, and delivered to Participant (including through electronic delivery to a brokerage account) or the Escrow Agent. After such issuance, recordation and delivery, Participant will have all the rights of a
stockholder of the Company with respect to voting such Shares and receipt of dividends and distributions on such Shares. Except as provided in Section 13(f), after such issuance, recordation and delivery, Participant will have all the rights of
a stockholder of the Company with respect to voting such Shares and receipt of dividends and distributions on such Shares. 

8.    No Guarantee of Continued Service. PARTICIPANT ACKNOWLEDGES AND AGREES THAT THE VESTING OF THE SHARES OF
RESTRICTED STOCK PURSUANT TO THE VESTING SCHEDULE HEREOF IS EARNED ONLY BY CONTINUING AS A SERVICE PROVIDER, WHICH UNLESS PROVIDED OTHERWISE UNDER APPLICABLE LAWS IS AT THE WILL OF THE APPLICABLE SERVICE RECIPIENT AND NOT THROUGH THE ACT OF BEING
HIRED, BEING GRANTED THIS RESTRICTED STOCK AWARD OR ACQUIRING SHARES HEREUNDER. PARTICIPANT FURTHER ACKNOWLEDGES AND AGREES THAT THIS AWARD AGREEMENT, THE TRANSACTIONS CONTEMPLATED HEREUNDER AND THE VESTING SCHEDULE SET FORTH HEREIN DO NOT
CONSTITUTE AN EXPRESS OR IMPLIED PROMISE OF CONTINUED ENGAGEMENT AS A SERVICE PROVIDER FOR THE VESTING PERIOD, FOR ANY PERIOD, OR AT ALL, AND SHALL NOT INTERFERE IN ANY WAY WITH PARTICIPANT’S RIGHT OR THE RIGHT OF ANY SERVICE RECIPIENT TO
TERMINATE PARTICIPANT’S RELATIONSHIP AS A SERVICE PROVIDER, SUBJECT TO APPLICABLE LAW, WHICH TERMINATION, UNLESS PROVIDED OTHERWISE UNDER APPLICABLE LAW, MAY BE AT ANY TIME, WITH OR WITHOUT CAUSE. 

9.    Grant is Not Transferable. Except for the escrow described in Section 13 or transfer of the Shares to
the Company or its assignees contemplated by this Award Agreement, and except to the limited extent provided in Section 5, the unvested Shares subject to this Award Agreement and the rights and privileges conferred hereby will not be
transferred, assigned, pledged or hypothecated in any way (whether by operation of law or otherwise) and will not be subject to sale under execution, attachment or similar process until such Shares shall have vested in accordance with the provisions
of this Award Agreement. Upon any attempt to transfer, assign, pledge, hypothecate or otherwise dispose of the unvested Shares subject to this Award Agreement, or any right or privilege conferred hereby, or upon any attempted sale under any
execution, attachment or similar process, the then-unvested Shares of Restricted Stock will thereupon be forfeited at no cost to the Company and Participant will have no further rights thereunder. 

10.    Nature of Grant. In accepting this Award of Restricted Stock, Participant acknowledges, understands and
agrees that: 

  
 - 4 - 

 (a)    the grant of the Shares of Restricted Stock is voluntary and
occasional and does not create any contractual or other right to receive future grants of Shares of Restricted Stock, or benefits in lieu of Shares of Restricted Stock, even if Shares of Restricted Stock have been granted in the past; 

(b)    all decisions with respect to future grants of Restricted Stock or other grants, if any, will be at the sole
discretion of the Administrator; 
 (c)    Participant is voluntarily participating in the Plan; 

(d)    the Shares of Restricted Stock are not intended to replace any pension rights or compensation; 

(e)    the Shares of Restricted Stock, and the income and value of same, are not part of normal or expected compensation
for purposes of calculating any severance, resignation, termination, redundancy, dismissal, end-of-service payments, bonuses, long-service awards, pension or retirement
or welfare benefits or similar payments; 
 (f)    the future value of the underlying Shares is unknown, indeterminable
and cannot be predicted; 
 (g)    for purposes of the Shares of Restricted Stock, Participant’s status as a
Service Provider will be considered terminated as of the date Participant is no longer actively providing services to the Company or any Parent or Subsidiary (regardless of the reason for such termination and whether or not later found to be invalid
or in breach of employment laws in the jurisdiction where Participant is a Service Provider or the terms of Participant’s employment or service agreement, if any), and unless otherwise expressly provided in this Award Agreement (including by
reference in the Notice of Grant to other arrangements or contracts) or determined by the Administrator, Participant’s right to vest in the Shares of Restricted Stock under the Plan, if any, will terminate as of such date and will not be
extended by any notice period (e.g., Participant’s period of service would not include any contractual notice period or any period of “garden leave” or similar period mandated under employment laws in the jurisdiction where
Participant is a Service Provider or the terms of Participant’s employment or service agreement, if any, unless Participant is providing bona fide services during such time); the Administrator shall have the exclusive discretion to determine
when Participant is no longer actively providing services for purposes of this Restricted Stock Award (including whether Participant may still be considered to be providing services while on a leave of absence and consistent with local law); 

(h)    unless otherwise provided in the Plan or by the Administrator in its discretion, the Shares of Restricted Stock and
the benefits evidenced by this Award Agreement do not create any entitlement to have the Shares of Restricted Stock or any such benefits transferred to, or assumed by, another company nor be exchanged, cashed out or substituted for, in connection
with any corporate transaction affecting the Shares; and 
 (i)    the following provisions apply only if Participant is
providing services outside the United States: 

  
 - 5 - 

 (i)    the Shares of Restricted Stock are not part of normal or
expected compensation or salary for any purpose; 
 (ii)    Participant acknowledges and agrees that no Service
Recipient shall be liable for any foreign exchange rate fluctuation between Participant’s local currency and the United States Dollar that may affect the value of the Shares of Restricted Stock or the subsequent sale of any Shares; and 

(iii)    no claim or entitlement to compensation or damages shall arise from forfeiture of the Restricted Stock resulting
from the termination of Participant’s status as a Service Provider (for any reason whatsoever whether or not later found to be invalid or in breach of employment laws in the jurisdiction where Participant is a Service Provider or the terms of
Participant’s employment or service agreement, if any), and in consideration of the grant of the Restricted Stock to which Participant is otherwise not entitled, Participant irrevocably agrees never to institute any claim against any
Service Recipient, waives his or her ability, if any, to bring any such claim, and releases each Service Recipient from any such claim; if, notwithstanding the foregoing, any such claim is allowed by a court of competent jurisdiction, then, by
participating in the Plan, Participant shall be deemed irrevocably to have agreed not to pursue such claim and agrees to execute any and all documents necessary to request dismissal or withdrawal of such claim. 

11.    No Advice Regarding Grant. The Company is not providing any tax, legal or financial advice, nor is the
Company making any recommendations regarding Participant’s participation in the Plan, or Participant’s acquisition or sale of the underlying Shares. Participant is hereby advised to consult with his or her own personal tax, legal and
financial advisers regarding his or her participation in the Plan before taking any action related to the Plan. 

12.    Data Privacy. Participant hereby explicitly and unambiguously consents to the collection, use and
transfer, in electronic or other form, of Participant’s personal data as described in this Award Agreement and any other Restricted Stock grant materials by and among, as applicable, the Service Recipients for the exclusive purpose of
implementing, administering and managing Participant’s participation in the Plan. 
 Participant understands that the
Company and the Service Recipient may hold certain personal information about Participant, including, but not limited to, Participant’s name, home address and telephone number, date of birth, social insurance number or other identification
number, salary, nationality, job title, any Shares or directorships held in the Company, details of all Shares of Restricted Stock or any other entitlement to Shares awarded, canceled, exercised, vested, unvested or outstanding in Participant’s
favor (“Data”), for the exclusive purpose of implementing, administering and managing the Plan. 

Participant understands that Data may be transferred to a stock plan service provider, as may be selected by the Company in the future,
assisting the Company with the implementation, administration and management of the Plan. Participant understands that the recipients of the Data may be located in the United States or elsewhere, and that the recipients’ country of operation
(e.g., the United States) may have different data privacy laws and protections than Participant’s country. Participant understands that if he or she resides outside the United States, he or she may request a list with the names and addresses of
any potential recipients of the Data by contacting his 

  
 - 6 - 

 
or her local human resources representative. Participant authorizes the Company, any stock plan service provider selected by the Company and any other possible recipients which may assist the
Company (presently or in the future) with implementing, administering and managing the Plan to receive, possess, use, retain and transfer the Data, in electronic or other form, for the sole purpose of implementing, administering and managing his or
her participation in the Plan. Participant understands that Data will be held only as long as is necessary to implement, administer and manage Participant’s participation in the Plan. Participant understands if he or she resides outside the
United States, he or she may, at any time, view Data, request additional information about the storage and processing of Data, require any necessary amendments to Data or refuse or withdraw the consents herein, in any case without cost, by
contacting in writing his or her local human resources representative. Further, Participant understands that he or she is providing the consents herein on a purely voluntary basis. If Participant does not consent, or if Participant later seeks to
revoke his or her consent, his or her status as a Service Provider and career with the Service Recipient will not be adversely affected. The only adverse consequence of refusing or withdrawing Participant’s consent is that the Company would not
be able to grant Participant Restricted Stock or other equity awards or administer or maintain such awards. Therefore, Participant understands that refusing or withdrawing his or her consent may affect Participant’s ability to participate in
the Plan. For more information on the consequences of Participant’s refusal to consent or withdrawal of consent, Participant understands that he or she may contact his or her local human resources representative. 

13.    Escrow of Shares. 

(a)    All Shares of Restricted Stock will, upon execution of this Award Agreement, be delivered and deposited with an
escrow holder designated by the Company (the “Escrow Holder”). The Shares of Restricted Stock will be held by the Escrow Holder until such time as the Shares of Restricted Stock vest or the date Participant ceases to be a Service
Provider. 
 (b)    The Escrow Holder will not be liable for any act it may do or omit to do with respect to holding the
Shares of Restricted Stock in escrow and while acting in good faith and in the exercise of its judgment. 
 (c)     Upon
Participant’s termination as a Service Provider for any reason, the Escrow Holder, upon receipt of written notice of such termination, will take all steps necessary to accomplish the transfer of the unvested Shares of Restricted Stock to the
Company. Participant hereby appoints the Escrow Holder with full power of substitution, as Participant’s true and lawful attorney-in-fact with irrevocable power and
authority in the name and on behalf of Participant to take any action and execute all documents and instruments, including, without limitation, stock powers which may be necessary to transfer the certificate or certificates evidencing such unvested
Shares of Restricted Stock to the Company upon such termination. 
 (d)    The Escrow Holder will take all steps
necessary to accomplish the transfer of Shares of Restricted Stock to Participant after they vest following Participant’s request that the Escrow Holder do so. 

  
 - 7 - 

 (e)    Subject to the terms hereof, Participant shall have all the
rights of a stockholder with respect to such Shares while they are held in escrow, including without limitation, the right to vote the Shares and receive any cash dividends declared thereon. 

(f)    In the event of any dividend or other distribution (whether in the form of cash, Shares, other securities, or other
property), recapitalization, stock split, reverse stock split, reorganization, merger, consolidation, split-up, spin-off, combination, reclassification, repurchase, or
exchange of Shares or other securities of the Company, or other change in the corporate structure of the Company affecting the Shares, the Shares of Restricted Stock will be increased, reduced or otherwise changed, and by virtue of any such change
Participant in his or her capacity as owner of unvested Shares of Restricted Stock will be entitled to new or additional or different shares of stock, cash or securities (other than rights or warrants to purchase securities); such new or additional
or different shares, cash or securities will thereupon be considered to be unvested Shares of Restricted Stock and will be subject to all of the conditions and restrictions which were applicable to the unvested Shares of Restricted Stock pursuant to
this Award Agreement. If Participant receives rights or warrants with respect to any unvested Shares of Restricted Stock, such rights or warrants may be held or exercised by Participant, provided that until such exercise any such rights or warrants
and after such exercise any shares or other securities acquired by the exercise of such rights or warrants will be considered to be unvested Shares of Restricted Stock and will be subject to all of the conditions and restrictions which were
applicable to the unvested Shares of Restricted Stock pursuant to this Award Agreement. The Administrator in its absolute discretion at any time may accelerate the vesting of all or any portion of such new or additional shares of stock, cash or
securities, rights or warrants to purchase securities or shares or other securities acquired by the exercise of such rights or warrants. 

(g)    The Company may instruct the transfer agent for its Common Stock to place a legend on the certificates representing
the Restricted Stock or otherwise note its records as to the restrictions on transfer set forth in this Award Agreement. 

14.    Address for Notices. Any notice to be given to the Company under the terms of this Award Agreement will be
addressed to the Company at ALX Oncology Holdings Inc., [insert address], or at such other address as the Company may hereafter designate in writing. 

15.    Successors and Assigns. The Company may assign any of its rights under this Award Agreement to single or
multiple assignees, and this Award Agreement shall inure to the benefit of the successors and assigns of the Company. Subject to the restrictions on transfer herein set forth, this Award Agreement shall be binding upon Participant and his or her
heirs, executors, administrators, successors and assigns. The rights and obligations of Participant under this Award Agreement may be assigned only with the prior written consent of the Company. 

16.    Additional Conditions to Issuance of Stock. If at any time the Company will determine, in its discretion,
that the listing, registration, qualification or rule compliance of the Shares upon any securities exchange or under any state, federal or non-U.S. law, the tax code and related regulations or under the
rulings or regulations of the U.S. Securities and Exchange Commission or any other governmental regulatory body or the clearance, consent or approval of the U.S. Securities and Exchange Commission or any other governmental regulatory authority is
necessary or desirable as a condition to the issuance of Shares to Participant (or his or her estate) or the Escrow Holder hereunder, such issuance will not occur unless and until such listing, registration, qualification, rule compliance,

  
 - 8 - 

 
clearance, consent or approval will have been completed, effected or obtained free of any conditions not acceptable to the Company. Subject to the terms of the Award Agreement and the Plan, the
Company shall not be required to issue any certificate or certificates for (or make any entry on the books of the Company or of a duly authorized transfer agent of the Company of) Shares hereunder prior to the lapse of such reasonable period of time
following the Date of Grant of the Shares of Restricted Stock as the Administrator may establish from time to time for reasons of administrative convenience. 

17.    Language. If Participant has received this Award Agreement or any other document related to the Plan
translated into a language other than English and if the meaning of the translated version is different than the English version, the English version will control. 

18.    Interpretation. The Administrator will have the power to interpret the Plan and this Award Agreement and to
adopt such rules for the administration, interpretation and application of the Plan as are consistent therewith and to interpret or revoke any such rules (including, but not limited to, the determination of whether or not any Shares of Restricted
Stock have vested). All actions taken and all interpretations and determinations made by the Administrator in good faith will be final and binding upon Participant, the Company and all other interested persons. Neither the Administrator nor any
person acting on behalf of the Administrator will be personally liable for any action, determination or interpretation made in good faith with respect to the Plan or this Award Agreement. 

19.    Electronic Delivery and Acceptance. The Company may, in its sole discretion, decide to deliver any documents
related to the Shares of Restricted Stock awarded under the Plan or future Shares of Restricted Stock that may be awarded under the Plan by electronic means or require Participant to participate in the Plan by electronic means. Participant hereby
consents to receive such documents by electronic delivery and agrees to participate in the Plan through any on-line or electronic system established and maintained by the Company or a third party designated by
the Company. 
 20.    Captions. Captions provided herein are for convenience only and are not to serve as a
basis for interpretation or construction of this Award Agreement. 
 21.    Amendment, Suspension or Termination of
the Plan. By accepting this Award, Participant expressly warrants that he or she has received an Award of Restricted Stock under the Plan, and has received, read and understood a description of the Plan. Participant understands that the Plan is
discretionary in nature and may be amended, suspended or terminated by the Administrator at any time. 

22.    Country Addendum. Notwithstanding any provisions in this Award Agreement, the Restricted Stock grant shall
be subject to any special terms and conditions set forth in an appendix (if any) to this Award Agreement for any country whose laws are applicable to Participant and this Award of Restricted Stock (as determined by the Administrator in its sole
discretion) (the “Country Addendum”). Moreover, if Participant relocates to one of the countries included in the Country Addendum (if any), the special terms and conditions for such country will apply to Participant, to the extent
the Company determines that the application of such terms and conditions is necessary or advisable for legal or administrative reasons. The Country Addendum constitutes part of this Award Agreement. 

  
 - 9 - 

 23.    Modifications to the Award Agreement. This Award Agreement
constitutes the entire understanding of the parties on the subjects covered. Participant expressly warrants that he or she is not accepting this Award Agreement in reliance on any promises, representations, or inducements other than those contained
herein. Modifications to this Award Agreement can be made only in an express written contract executed by a duly authorized officer of the Company. Notwithstanding anything to the contrary in the Plan or this Award Agreement, the Company reserves
the right to revise this Award Agreement as it deems necessary or advisable, in its sole discretion and without the consent of Participant, to comply with Section 409A or to otherwise avoid imposition of any additional tax or income recognition
under Section 409A in connection with this Award of Shares of Restricted Stock. 
 24.    No Waiver. Either
party’s failure to enforce any provision or provisions of this Award Agreement shall not in any way be construed as a waiver of any such provision or provisions, nor prevent that party from thereafter enforcing each and every other provision of
this Award Agreement. The rights granted both parties herein are cumulative and shall not constitute a waiver of either party’s right to assert all other legal remedies available to it under the circumstances. 

25.    Governing Law; Severability. This Award Agreement and the Shares of Restricted Stock are governed by the
internal substantive laws, but not the choice of law rules, of the State of Delaware. In the event that any provision hereof becomes or is declared by a court of competent jurisdiction to be illegal, unenforceable or void, this Award Agreement shall
continue in full force and effect. 
 26.    Entire Agreement. The Plan is incorporated herein by reference. The
Plan and this Award Agreement (including the exhibits, appendices, and addenda attached to the Notice of Grant) constitute the entire agreement of the parties with respect to the subject matter hereof and supersede in their entirety all prior
undertakings and agreements of the Company and Participant with respect to the subject matter hereof, and may not be modified adversely to the Participant’s interest except by means of a writing signed by the Company and Participant. 

*        *        * 

  
 - 10 - 

 APPENDIX A 

ALX ONCOLOGY HOLDINGS INC. 

AMENDED AND RESTATED 2020 EQUITY INCENTIVE PLAN 

COUNTRY ADDENDUM TO RESTRICTED STOCK AWARD AGREEMENT 

Unless otherwise defined herein, capitalized terms used in this Country Addendum to Restricted Stock Award Agreement (the “Country
Addendum”) will be ascribed the same defined meanings as set forth in the Restricted Stock Award Agreement of which this Country Addendum forms a part (or the Plan or other written agreement as specified in the Restricted Stock Award
Agreement). 
 Terms and Conditions 

This Country Addendum includes additional terms and conditions that govern the Award of Restricted Stock granted pursuant to the terms and
conditions of the ALX Oncology Holdings Inc. Amended and Restated 2020 Equity Incentive Plan (the “Plan”) and the Restricted Stock Award Agreement to which this Country Addendum is attached (the “Restricted Stock Award
Agreement”) to the extent the individual to whom the Shares of Restricted Stock were granted (“Participant”) resides and/or works in one of the countries listed below. If the Participant is a citizen or resident (or is
considered as such for local law purposes) of a country other than the country in which the Participant is currently residing and/or working, or if the Participant relocates to another country after the Award of Restricted Stock is granted, the
Company, in its discretion, will determine to what extent the terms and conditions contained herein will apply to the Participant. 
 Notifications

 This Country Addendum also may include information regarding exchange controls and certain other issues of which Participant
should be aware with respect to his or her participation in the Plan. The information is based on the securities, exchange control and other Applicable Laws in effect in the respective countries as of
[        ], 2020. Such Applicable Laws often are complex and change frequently. As a result, the Company strongly recommends that Participant not rely on the information in this Country Addendum as the
only source of information relating to the consequences of Participant’s participation in the Plan because the information may be out of date at the time Participant vests in or receives or sells the Shares covered by the Shares of Restricted
Stock. 
 In addition, the information contained in this Country Addendum is general in nature and may not apply to Participant’s
particular situation, and the Company is not in a position to assure Participant of any particular result. Participant should seek appropriate professional advice as to how the Applicable Laws in Participant’s country may apply to his or her
situation. 
 Finally, if Participant is a citizen or resident of a country other than the one in which Participant currently is residing
and/or working, transfers residence and/or employment to another country after the grant of the Shares of Restricted Stock, or is considered a resident of another country for local law purposes, the information in this Country Addendum may not apply
to Participant in the same manner. 
 [Jurisdiction specific provisions to be added by local counsel.]EX-10.3

 Exhibit 10.3 

ALX ONCOLOGY HOLDINGS INC. 

2020 EMPLOYEE STOCK PURCHASE PLAN 

1.    Purpose. The purpose of the Plan is to provide employees of the Company and its Designated Companies with an
opportunity to purchase Common Stock through accumulated Contributions. The Company intends for the Plan to have two components: a component that is intended to qualify as an “employee stock purchase plan” under Code Section 423 (the
“423 Component”) and a component that is not intended to qualify as an “employee stock purchase plan” under Code Section 423 (the “Non-423
Component”). The provisions of the 423 Component, accordingly, will be construed so as to extend and limit Plan participation in a uniform and nondiscriminatory basis consistent with the requirements of Code Section 423. In
addition, this Plan authorizes the grant of an option to purchase shares of Common Stock under the Non-423 Component that does not qualify as an “employee stock purchase plan” under Code
Section 423; an option granted under the Non-423 Component will provide for substantially the same benefits as an option granted under the 423 Component, except that a Non-423 Component option may include features necessary to comply with applicable non-U.S. laws pursuant to rules, procedures or
sub-plans adopted by the Administrator. Except as otherwise provided herein or by the Administrator, the Non-423 Component will operate and be administered in the
same manner as the 423 Component. 
 2.    Definitions. 

(a)    “Administrator” means the Board or any Committee designated by the Board to administer the Plan
pursuant to Section 3. 
 (b)    “Applicable Laws” means the legal and regulatory requirements
relating to the administration of equity-based awards, including but not limited to the related issuance of shares of Common Stock, including but not limited to, under U.S. federal and state corporate laws,
U.S. federal and state securities laws, the Code, any stock exchange or quotation system on which the Common Stock is listed or quoted and the applicable laws of any non-U.S. country or jurisdiction where
options are, or will be, granted under the Plan. 
 (c)    “Board” means the Board of Directors of the
Company. 
 (d)    “Change in Control” means the occurrence of any of the following events: 

(i)    Change in Ownership of the Company. A change in the ownership of the Company which occurs on the date that
any one person, or more than one person acting as a group (“Person”), acquires ownership of the stock of the Company that, together with the stock held by such Person, constitutes more than fifty percent (50%) of the total voting
power of the stock of the Company; provided, however, that for purposes of this subsection (i), the acquisition of additional stock by any one Person, who is considered to own more than fifty percent (50%) of the total voting power of the stock
of the Company will not be considered a Change in Control; provided, further, that any change in the ownership of the stock of the Company as a result of a private financing of the Company that is approved by the Board also will not be considered a
Change in Control. Further, if the stockholders of the Company immediately before such change in ownership continue to retain immediately after the change in ownership, in substantially the same proportions as their ownership of shares of the
Company’s voting stock immediately prior to the change in ownership, direct or 

 
indirect beneficial ownership of fifty percent (50%) or more of the total voting power of the stock of the Company or of the ultimate parent entity of the Company, such event will not be
considered a Change in Control under this subsection (i). For this purpose, indirect beneficial ownership will include, without limitation, an interest resulting from ownership of the voting securities of one or more corporations or other
business entities which own the Company, as the case may be, either directly or through one or more subsidiary corporations or other business entities; or 

(ii)    Change in Effective Control of the Company. A change in the effective control of the Company which occurs
on the date that a majority of members of the Board is replaced during any twelve (12) month period by Directors whose appointment or election is not endorsed by a majority of the members of the Board prior to the date of the appointment or
election. For purposes of this subsection (ii), if any Person is considered to be in effective control of the Company, the acquisition of additional control of the Company by the same Person will not be considered a Change in Control; or 

(iii)    Change in Ownership of a Substantial Portion of the Company’s Assets. A change in the
ownership of a substantial portion of the Company’s assets which occurs on the date that any Person acquires (or has acquired during the twelve (12) month period ending on the date of the most recent acquisition by such Person) assets from
the Company that have a total gross fair market value equal to or more than fifty percent (50%) of the total gross fair market value of all of the assets of the Company immediately prior to such acquisition or acquisitions; provided, however, that
for purposes of this subsection (iii), the following will not constitute a change in the ownership of a substantial portion of the Company’s assets: (A) a transfer to an entity that is controlled by the Company’s stockholders
immediately after the transfer, or (B) a transfer of assets by the Company to: (I) a stockholder of the Company (immediately before the asset transfer) in exchange for or with respect to the Company’s stock, (II) an entity, fifty
percent (50%) or more of the total value or voting power of which is owned, directly or indirectly, by the Company, (III) a Person, that owns, directly or indirectly, fifty percent (50%) or more of the total value or voting power of all the
outstanding stock of the Company, or (IV) an entity, at least fifty percent (50%) of the total value or voting power of which is owned, directly or indirectly, by a Person described in subsection (iii)(B)(III). For purposes of this
subsection (iii), gross fair market value means the value of the assets of the Company, or the value of the assets being disposed of, determined without regard to any liabilities associated with such assets. 

For purposes of this Section 2(d), persons will be considered to be acting as a group if they are owners of a corporation that enters
into a merger, consolidation, purchase or acquisition of stock, or similar business transaction with the Company. 
 Notwithstanding the
foregoing, a transaction will not be deemed a Change in Control unless the transaction qualifies as a change in control event within the meaning of Section 409A. 

Further and for the avoidance of doubt, a transaction will not constitute a Change in Control if: (i) its sole purpose is to change the
jurisdiction of the Company’s incorporation, or (ii) its sole purpose is to create a holding company that will be owned in substantially the same proportions by the persons who held the Company’s securities immediately before such
transaction. 

  
 -2- 

 (e)    “Code” means the U.S. Internal Revenue Code
of 1986, as amended. Reference to a specific section of the Code or regulation thereunder will include such section or regulation, any valid regulation or other official applicable guidance promulgated under such section, and any comparable
provision of any future legislation or regulation amending, supplementing or superseding such section or regulation. 

(f)    “Committee” means a committee of the Board appointed in accordance with Section 3 hereof.

 (g)    “Common Stock” means the common stock of the Company. 

(h)    “Company” means ALX Oncology Holdings Inc., a Delaware corporation, or any successor thereto. 

(i)    “Compensation” means an Eligible Employee’s base straight time gross earnings, but exclusive
of payments for overtime, shift premium, commissions, incentive compensation, equity compensation, bonuses and other similar compensation. The Administrator, in its discretion, may, on a uniform and nondiscriminatory basis, establish a different
definition of Compensation for a subsequent Offering Period. 
 (j)    “Contributions” means the
payroll deductions and other additional payments that the Company may permit to be made by a Participant to fund the exercise of options granted pursuant to the Plan. 

(k)    “Designated Company” means any Subsidiary that has been designated by the Administrator from time
to time in its sole discretion as eligible to participate in the Plan. For purposes of the 423 Component, only the Company and its Subsidiaries may be Designated Companies, provided, however that at any given time, a Subsidiary that is a
Designated Company under the 423 Component will not be a Designated Company under the Non-423 Component. 

(l)    “Director” means a member of the Board. 

(m)    “Eligible Employee” means any individual who is a common law employee providing services to the
Company or a Designated Company and is customarily employed for at least twenty (20) hours per week and more than five (5) months in any calendar year by the Employer, or any lesser number of hours per week and/or number of months in any
calendar year established by the Administrator (if required under Applicable Laws) for purposes of any separate Offering or for Participants in the Non-423 Component. For purposes of the Plan, the
employment relationship will be treated as continuing intact while the individual is on sick leave or other leave of absence that the Employer approves or is legally protected under Applicable Laws with respect to the Participant’s
participation in the Plan. Where the period of leave exceeds three (3) months and the individual’s right to reemployment is not guaranteed either by statute or by contract, the employment relationship will be deemed to have terminated
three (3) months and one (1) day following the commencement of such leave. The Administrator, in its discretion, from time to time may, prior to an Enrollment Date for all options to be granted on such Enrollment Date in an Offering,
determine (for each Offering under the 423 Component, on a uniform and nondiscriminatory basis or as otherwise permitted by U.S. Treasury Regulations Section 1.423-2) that the definition of Eligible
Employee will or will not include an individual if he or she: (i) has not completed at least two (2) years of service since his or 

  
 -3- 

 
her last hire date (or such lesser period of time as may be determined by the Administrator in its discretion), (ii) customarily works not more than twenty (20) hours per week (or such
lesser period of time as may be determined by the Administrator in its discretion), (iii) customarily works not more than five (5) months per calendar year (or such lesser period of time as may be determined by the Administrator in its
discretion), (iv) is a highly compensated employee within the meaning of Code Section 414(q), or (v) is a highly compensated employee within the meaning of Code Section 414(q) with compensation above a certain level or is an
officer or subject to the disclosure requirements of Section 16(a) of the Exchange Act, provided the exclusion is applied with respect to each Offering under the 423 Component in an identical manner to all highly compensated individuals of
the Employer whose employees are participating in that Offering. Each exclusion will be applied with respect to an Offering under the 423 Component in a manner complying with U.S. Treasury Regulations
Section 1.423-2(e)(2)(ii). Such exclusions may be applied with respect to an Offering under the Non-423 Component without regard to the limitations of U.S.
Treasury Regulations Section 1.423-2. 
 (n)    “Employer”
means the employer of the applicable Eligible Employee(s). 
 (o)    “Enrollment Date” means the first
Trading Day of each Offering Period. 
 (p)    “Exchange Act” means the U.S. Securities Exchange Act of
1934, as amended, including the rules and regulations promulgated thereunder. 
 (q)    “Exercise Date”
means the last Trading Day of a Purchase Period. Notwithstanding the foregoing, in the event that an Offering Period is terminated prior to its expiration pursuant to Section 18, the Administrator, in its sole discretion, may determine that any
Purchase Period also terminating under such Offering Period will terminate without options being exercised on the Exercise Date that otherwise would have occurred on the last Trading Day of such Purchase Period. 

(r)    “Fair Market Value” means, as of any date and unless the Administrator determines otherwise, the
value of Common Stock determined as follows: 
 (i)    If the Common Stock is listed on any established stock exchange
or a national market system, including without limitation the New York Stock Exchange or the Nasdaq Global Select Market, the Nasdaq Global Market, the Nasdaq Capital Market of The Nasdaq Stock Market, its Fair Market Value will be the closing sales
price for such stock (or, if no closing sales price was reported on that date, as applicable, on the last Trading Day such closing sales price was reported) as quoted on such exchange or system on the date of determination, as reported in The
Wall Street Journal or such other source as the Administrator deems reliable; 
 (ii)    If the Common Stock is
regularly quoted by a recognized securities dealer but selling prices are not reported, the Fair Market Value of a share of Common Stock will be the mean between the high bid and low asked prices for the Common Stock on the day of determination (or
if no bids and asks were reported on that date, as applicable, on the last Trading Day such bids and asks were reported), as reported in The Wall Street Journal or such other source as the Administrator deems reliable; or 

(iii)    In the absence of an established market for the Common Stock, the Fair Market Value thereof will be determined
in good faith by the Administrator. 

  
 -4- 

 The determination of fair market value for purposes of tax withholding may be made in the
Administrator’s discretion subject to Applicable Laws and is not required to be consistent with the determination of Fair Market Value for other purposes. 

(s)    “Fiscal Year” means the fiscal year of the Company. 

(t)    “New Exercise Date” means a new Exercise Date if the Administrator shortens any Offering Period
then in progress. 
 (u)    “Offering” means an offer under the Plan of an option that may be exercised
during an Offering Period as further described in Section 6. For purposes of the Plan, the Administrator may designate separate Offerings under the Plan (the terms of which need not be identical) in which Eligible Employees of one or more
Employers will participate, even if the dates of the applicable Offering Periods of each such Offering are identical and the provisions of the Plan will separately apply to each Offering. To the extent permitted by U.S. Treasury Regulations Section 1.423-2(a)(1), the terms of each Offering need not be identical provided that the terms of the Plan and an Offering together satisfy U.S. Treasury Regulations
Section 1.423-2(a)(2) and (a)(3). 
 (v)    “Offering
Period” means a period beginning on such date as may be determined by the Administrator, in its discretion, and ending on such Exercise Date as may be determined by the Administrator, in its discretion, during which an option granted
pursuant to the Plan may be exercised. The duration and timing of Offering Periods may be changed pursuant to Sections 6 and 18. 

(w)    “Parent” means a “parent corporation,” whether now or hereafter existing, as defined in
Code Section 424(e). 
 (x)    “Participant” means an Eligible Employee that participates in the
Plan. 
 (y)    “Plan” means this ALX Oncology Holding Inc. Employee Stock Purchase Plan. 

(z)    “Purchase Period” means the period during an Offering Period and during which shares of Common
Stock may be purchased on behalf of Participants thereunder in accordance with the terms of the Plan. Purchase Periods will have such duration as determined by the Administrator, commencing after one Exercise Date and ending with the next Exercise
Date, except that the first Purchase Period of any Offering Period will commence on the Enrollment Date and end with the next Exercise Date. Unless the Administrator provides otherwise, a Purchase Period in an Offering Period will have the same
duration as, and coincide with the length of, such Offering Period. 
 (aa)    “Purchase Price” means
an amount equal to eighty-five percent (85%) of the Fair Market Value of a share of Common Stock on the Enrollment Date or on the Exercise Date, whichever is lower; provided however, that the Purchase Price may be determined for any Offering Period
by the Administrator subject to compliance with Code Section 423 (or any successor rule or provision or any other Applicable Laws, regulation or stock exchange rule) or pursuant to Section 18. 

(bb)    “Registration Date” means the effective date of the first registration statement that is filed by
the Company and declared effective pursuant to Section 12(b) of the Exchange Act, with respect to any class of the Company’s securities. 

  
 -5- 

 (cc)    “Section 409A” means Code
Section 409A and the Treasury Regulations and guidance thereunder, and any state law equivalent, as each may be promulgated, amended or modified from time to time. 

(dd)    “Subsidiary” means a “subsidiary corporation,” whether now or hereafter existing, as
defined in Code Section 424(f). 
 (ee)    “Trading Day” means a day that the primary stock
exchange, national market system, or other trading platform, as applicable, upon which the Common Stock is listed (or otherwise trades regularly, as determined by the Administrator, in its sole discretion) is open for trading. 

(ff)    “U.S. Treasury Regulations” means the Treasury Regulations of the Code. Reference to a specific
Treasury Regulation or Section of the Code will include such Treasury Regulation or Section, any valid regulation promulgated under such Section, and any comparable provision of any future legislation or regulation amending, supplementing or
superseding such Section or regulation. 
 3.    Stock. 

(a)    Stock Subject to the Plan. Subject to adjustment upon changes in capitalization of the Company as provided
in Section 17 hereof, the maximum number of shares of Common Stock that will be made available for sale under the Plan will be 400,000 shares of Common Stock. 

(b)    Automatic Share Reserve Increase. Subject to adjustment upon change in capitalization of the Company as
provided in Section 17 hereof, the number of shares of Common Stock available for issuance under the Plan will be increased on the first day of each Fiscal Year beginning with the 2021 Fiscal Year equal to the least of
(a) 800,000 shares of Common Stock, (b) one percent (1%) of the outstanding shares of Common Stock on the last day of the immediately preceding Fiscal Year, or (c) such number of Shares determined by the Board no later than the
last day of the immediately preceding Fiscal Year. The shares of Common Stock may be authorized, but unissued, or reacquired Common Stock. 

4.    Administration. The Plan will be administered by the Board or a Committee appointed by the Board, which
Committee will be constituted to comply with Applicable Laws. The Administrator will have full and exclusive discretionary authority to 

(a)    construe, interpret and apply the terms of the Plan, 

(b)    delegate ministerial duties to any of the Company’s employees, 

(c)    designate separate Offerings under the Plan, 

(d)    designate Subsidiaries as participating in the 423 Component or
Non-423 Component, 
 (e)    determine eligibility, 

(f)    adjudicate all disputed claims filed under the Plan, and 

  
 -6- 

 (g)    establish such procedures that it deems necessary or advisable
for the administration of the Plan (including, without limitation, to adopt such procedures, sub-plans, and appendices to the enrollment agreement as are necessary or appropriate to permit the participation in
the Plan by employees who are foreign nationals or employed outside the U.S., the terms of which sub-plans and appendices may take precedence over other provisions of this Plan, with the exception of
Section 3 hereof, but unless otherwise superseded by the terms of such sub-plan or appendix, the provisions of this Plan will govern the operation of such sub-plan
or appendix). Unless otherwise determined by the Administrator, the Eligible Employees eligible to participate in each sub-plan will participate in a separate Offering under the 423 Component, or if the
terms would not qualify under the 423 Component, in the Non-423 Component, in either case unless such designation would cause the 423 Component to violate the requirements of Code
Section 423. 
 Without limiting the generality of the foregoing, the Administrator is specifically authorized to adopt rules and
procedures regarding eligibility to participate, the definition of Compensation, handling of Contributions, making of Contributions to the Plan (including, without limitation, in forms other than payroll deductions), establishment of bank or trust
accounts to hold Contributions, payment of interest, conversion of local currency, obligations to pay payroll tax, determination of beneficiary designation requirements, withholding procedures and handling of stock certificates that vary with
applicable local requirements. The Administrator also is authorized to determine that, to the extent permitted by U.S. Treasury Regulations Section 1.423-2(f), the terms of an option granted under the
Plan or an Offering to citizens or residents of a non-U.S. jurisdiction will be less favorable than the terms of options granted under the Plan or the same Offering to employees resident solely in the U.S.
Every finding, decision and determination made by the Administrator will, to the full extent permitted by law, be final and binding upon all parties. 

5.    Eligibility. 

(a)    Offering Periods. Any Eligible Employee on a given Enrollment Date will be eligible to participate in the
Plan, subject to the requirements of Section 7. 

(b)    Non-U.S. Employees. Eligible Employees who are citizens or
residents of a non-U.S. jurisdiction (without regard to whether they also are citizens or residents of the United States or resident aliens (within the meaning of Code Section 7701(b)(1)(A))) may be
excluded from participation in the Plan or an Offering if the participation of such Eligible Employees is prohibited under the laws of the applicable jurisdiction or if complying with the laws of the applicable jurisdiction would cause the Plan or
an Offering to violate Code Section 423. In the case of the Non-423 Component, an Eligible Employee may be excluded from participation in the Plan or an Offering if the Administrator has determined
that participation of such Eligible Employee is not advisable or practicable. 
 (c)    Limitations. Any
provisions of the Plan to the contrary notwithstanding, no Eligible Employee will be granted an option under the Plan (i) to the extent that, immediately after the grant, such Eligible Employee (or any other person whose stock would be
attributed to such Eligible Employee pursuant to Code Section 424(d)) would own capital stock of the Company or any Parent or Subsidiary of the Company and/or hold outstanding options to purchase such stock possessing five percent (5%) or more
of the total combined voting power or value of all classes of the capital stock of the Company or of any Parent or Subsidiary of the Company, or (ii) to the extent that his or her rights 

  
 -7- 

 
to purchase stock under all employee stock purchase plans (as defined in Code Section 423) of the Company or any Parent or Subsidiary of the Company accrues at a rate, which exceeds twenty-five thousand dollars ($25,000) worth of stock (determined at the Fair Market Value of the stock at the time such option is granted) for each calendar year in which such option is outstanding at any time, as
determined in accordance with Code Section 423 and the regulations thereunder. 
 6.    Offering Periods.
The Plan will be implemented by Offering Periods as established by the Administrator from time to time. Offering Periods will expire on the earliest to occur of (a) the completion of the purchase of shares on the last Exercise Date occurring
within twenty-seven (27) months of the applicable Enrollment Date on which the option to purchase shares was granted under the Plan, or (b) such shorter period established prior to the Enrollment
Date of the Offering Period by the Administrator, from time to time, in its discretion, on a uniform and nondiscriminatory basis, for all options to be granted on such Enrollment Date. The Administrator will have the power to change the duration of
Offering Periods (including the commencement dates thereof) with respect to future Offerings without stockholder approval if such change is announced prior to the scheduled beginning of the first Offering Period to be affected thereafter; provided,
however, that no Offering Period may last more than twenty-seven (27) months. 
 7.    Participation. An
Eligible Employee may participate in the Plan by (i) submitting to the Company’s stock administration office (or its designee), a properly completed subscription agreement authorizing Contributions in the form provided by the Administrator
for such purpose, or (ii) following an electronic or other enrollment procedure determined by the Administrator, in either case, on or before a date determined by the Administrator prior to an applicable Enrollment Date. 

8.    Contributions. 

(a)    Contribution Amounts. At the time a Participant enrolls in the Plan pursuant to Section 7, he or she
will elect to have Contributions (in the form of payroll deductions or otherwise, to the extent permitted by the Administrator) made on each pay day during the Offering Period in an amount not exceeding fifteen percent (15%) of the Compensation,
which he or she receives on each pay day during the Offering Period; provided, however, that should a pay day occur on an Exercise Date, a Participant will have any Contributions made on such day applied to his or her account under the then-current Purchase Period or Offering Period. 
 (b)    Contribution
Methods. The Administrator, in its sole discretion, may permit all Participants in a specified Offering to contribute amounts to the Plan through payment by cash, check or other means set forth in the subscription agreement prior to each
Exercise Date of each Offering Period. A Participant’s subscription agreement will remain in effect for successive Offering Periods unless terminated as provided in Section 12 hereof. 

(i)    In the event Contributions are made in the form of payroll deductions, such payroll deductions for a Participant
will commence on the first pay day following the Enrollment Date and will end on the last pay day on or prior to the last Exercise Date of such Offering Period to which such authorization is applicable, unless sooner terminated by the Participant as
provided in Section 12 hereof. 

  
 -8- 

 (ii)    All Contributions made for a Participant will be credited to
his or her account under the Plan and Contributions will be made in whole percentages of his or her Compensation only. A Participant may not make any additional payments into such account. 

(c)    Participant Changes to Contributions. A Participant may discontinue his or her participation in the Plan as
provided under Section 12. Until and unless determined otherwise by the Administrator, in its sole discretion, during any Offering Period, a Participant may not increase the rate of his or her Contributions and may decrease the rate of his or
her Contributions only one (1) time, provided that such decrease is to a Contribution rate of zero percent (0%). In addition, until and unless determined otherwise by the Administrator, in its sole discretion, during any Offering Period, a
Participant may increase or decrease the rate of his or her Contributions (as a whole percent to a rate between zero percent (0%) and the maximum percentage specified in Section 8(a)), which Contribution rate adjustment will become effective
upon the commencement of the next Offering Period and remain in effect for subsequent Offering Periods and, except as set forth in the immediately preceding sentence, any such adjustment will not affect the Contribution rate for any ongoing Offering
Period. 
 (i)    A Participant may make a Contribution rate adjustment pursuant to this Section 8(c) by
(A) properly completing and submitting to the Company’s stock administration office (or its designee), a new subscription agreement authorizing the change in Contribution rate in the form provided by the Administrator for such purpose, or
(B) following an electronic or other procedure prescribed by the Administrator, in either case, on or before a date determined by the Administrator prior to (x) the scheduled beginning of the first Offering Period to be affected or
(y) an applicable Exercise Date, as applicable. If a Participant has not followed such procedures to change the rate of Contributions, the rate of his or her Contributions will continue at the originally elected rate throughout the Offering
Period and future Offering Periods (unless the Participant’s participation is terminated as provided in Sections 12 or 13). 

(ii)    The Administrator may, in its sole discretion, limit or amend the nature and/or number of Contribution rate
changes (including to permit, prohibit and/or limit increases and/or decreases to rate changes) that may be made by Participants during any Purchase Period or Offering Period, and may establish such other conditions or limitations as it deems
appropriate for Plan administration. 
 (iii)    Any change in Contribution rate made pursuant to this
Section 8(c)(iii) will be effective as of the first full payroll period following five (5) business days after the date on which the change is made by the Participant (unless the Administrator, in its sole discretion, elects to process a
given change in Contribution rate earlier). 
 (d)    Other Contribution Changes. Notwithstanding the foregoing,
to the extent necessary to comply with Code Section 423(b)(8) and Section 5(c) hereof (which generally limit participation in an Offering Period pursuant to certain Applicable Laws), a Participant’s Contributions may be decreased to
zero percent (0%) by the Administrator at any time during an Offering Period (or a Purchase Period, as applicable). Subject to Code Section 423(b)(8) and Section 5(c) hereof, Contributions will recommence at the rate originally elected by
the Participant effective as of the beginning of the first Offering Period (or Purchase Period, as applicable) scheduled to end in the following calendar year, unless the Participant’s participation has terminated as provided in
Sections 12 or 13. 

  
 -9- 

 (e)    Cash Contributions. Notwithstanding any provisions to the
contrary in the Plan, the Administrator may allow Participants to participate in the Plan via cash contributions instead of payroll deductions if (i) payroll deductions are not permitted or advisable under Applicable Laws, (ii) the
Administrator determines that cash contributions are permissible for Participants participating in the 423 Component and/or (iii) the Participants are participating in the Non-423 Component.

 (f)    Tax Withholdings. At the time the option is exercised, in whole or in part, or at the time some or all
of the Common Stock issued under the Plan is disposed of (or at any other time that a taxable event related to the Plan occurs), the Participant must make adequate provision for the Company’s or Employer’s federal, state, local or any
other tax liability payable to any authority including taxes imposed by jurisdictions outside of the U.S., national insurance, social security or other tax withholding or payment on account obligations, if any, which arise upon the exercise of the
option or the disposition of the Common Stock (or any other time that a taxable event related to the Plan occurs). At any time, the Company or the Employer may, but will not be obligated to, withhold from the Participant’s compensation the
amount necessary for the Company or the Employer to meet applicable withholding obligations, including any withholding required to make available to the Company or the Employer any tax deductions or benefits attributable to the sale or early
disposition of Common Stock by the Eligible Employee. In addition, the Company or the Employer may, but will not be obligated to, withhold from the proceeds of the sale of Common Stock or use any other method of withholding the Company or the
Employer deems appropriate to the extent permitted by U.S. Treasury Regulations Section 1.423-2(f). 

(g)    Use of Funds. The Company may use all Contributions received or held by it under the Plan for any corporate
purpose, and the Company will not be obligated to segregate such Contributions except under Offerings or for Participants in the Non-423 Component for which Applicable Laws require that Contributions to
the Plan by Participants be segregated from the Company’s general corporate funds and/or deposited with an independent third party, provided that, if such segregation or deposit with an independent third party is required by Applicable Laws, it
will apply to all Participants in the relevant Offering under the 423 Component, except to the extent otherwise permitted by U.S. Treasury Regulations Section 1.423-2(f). Until shares of Common Stock
are issued, Participants will have only the rights of an unsecured creditor with respect to such shares. 

9.    Grant of Option. On the Enrollment Date of each Offering Period, each Eligible Employee participating in such
Offering Period will be granted an option to purchase on each Exercise Date during such Offering Period (at the applicable Purchase Price) up to a number of shares of Common Stock determined by dividing such Eligible Employee’s Contributions
accumulated prior to such Exercise Date and retained in the Eligible Employee’s account as of the Exercise Date by the applicable Purchase Price. 

(a)    Certain Option Limits. In no event will an Eligible Employee be permitted to purchase during each Offering
Period more than 3,000 shares of Common Stock (subject to any adjustment pursuant to Section 17), and provided further that such purchase will be subject to the limitations set forth in Sections 3 and 5(c) and in the subscription
agreement. The Administrator, in its absolute discretion, may increase or decrease the maximum number of shares of Common Stock that an Eligible Employee may purchase during each Purchase Period or Offering Period, as applicable. 

  
 -10- 

 (b)    Option Receipt. The Eligible Employee may accept the grant
of an option under the Plan by electing to participate in the Plan in accordance with the requirements of Section 7. 

(c)    Option Term. Exercise of the option will occur as provided in Section 10, unless the Participant’s
participation has terminated pursuant to Sections 12 or 13. The option will expire on the last day of the Offering Period. 

10.    Exercise of Option. 

(a)    Automatic Exercise. Unless a Participant’s participation in the Plan has terminated as provided in
Sections 12 and 13, his or her option for the purchase of shares of Common Stock will be exercised automatically on the Exercise Date, and the maximum number of full shares subject to the option will be purchased for such Participant at the
applicable Purchase Price with the accumulated Contributions from his or her account. No fractional shares of Common Stock will be purchased; any Contributions accumulated in a Participant’s account, which are not sufficient to purchase a full
share will be retained in the Participant’s account for the subsequent Purchase Period or Offering Period, as applicable, subject to earlier withdrawal by the Participant as provided in Sections 12 or 13. Any other funds left over in a
Participant’s account after the Exercise Date will be returned to the Participant. During a Participant’s lifetime, a Participant’s option to purchase shares of Common Stock hereunder is exercisable only by him or her. 

(b)    Pro Rata Allocations. If the Administrator determines that, on a given Exercise Date, the number of shares
of Common Stock with respect to which options are to be exercised may exceed (i) the number of shares of Common Stock that were available for sale under the Plan on the Enrollment Date of the applicable Offering Period, or (ii) the number
of shares of Common Stock available for sale under the Plan on such Exercise Date, the Administrator may in its sole discretion (x) provide that the Company will make a pro rata allocation of the shares of Common Stock available for purchase on
such Enrollment Date or Exercise Date, as applicable, in as uniform a manner as will be practicable and as it will determine in its sole discretion to be equitable among all Participants exercising options to purchase Common Stock on such Exercise
Date, and continue all Offering Periods then in effect or (y) provide that the Company will make a pro rata allocation of the shares of Common Stock available for purchase on such Enrollment Date or Exercise Date, as applicable, in as uniform a
manner as will be practicable and as it will determine in its sole discretion to be equitable among all participants exercising options to purchase Common Stock on such Exercise Date, and terminate any or all Offering Periods then in effect pursuant
to Section 18. The Company may make a pro rata allocation of the shares of Common Stock available on the Enrollment Date of any applicable Offering Period pursuant to the preceding sentence, notwithstanding any authorization of additional
shares of Common Stock for issuance under the Plan by the Company’s stockholders subsequent to such Enrollment Date. 

11.    Delivery. As soon as reasonably practicable after each Exercise Date on which a purchase of shares of Common
Stock occurs, the Company will arrange the delivery to each Participant of the shares purchased upon exercise of his or her option in a form determined by the Administrator (in its sole discretion) and pursuant to rules established by the
Administrator. The Company may 

  
 -11- 

 
permit or require that shares be deposited directly with a broker designated by the Company or with a trustee or designated agent of the Company, and the Company may utilize electronic or
automated methods of share transfer. The Company may require that shares be retained with such broker, trustee or agent for a designated period of time and/or may establish other procedures to permit tracking of disqualifying dispositions or other
dispositions of such shares. No Participant will have any voting, dividend, or other stockholder rights with respect to shares of Common Stock subject to any option granted under the Plan until such shares have been purchased and delivered to the
Participant as provided in this Section 11. 
 12.    Withdrawal. 

(a)    Withdrawal Procedures. A Participant may withdraw all but not less than all the Contributions credited to his
or her account and not yet used to exercise his or her option under the Plan at any time by (i) submitting to the Company’s stock administration office (or its designee) a written notice of withdrawal in the form determined by the
Administrator for such purpose (which may be similar to the form attached hereto as Exhibit B), or (ii) following an electronic or other withdrawal procedure determined by the Administrator. The Administrator may set
forth a deadline of when a withdrawal must occur to be effective prior to a given Exercise Date in accordance with policies it may approve from time to time. All of the Participant’s Contributions credited to his or her account will be paid to
such Participant as soon as administratively practicable after receipt of notice of withdrawal and such Participant’s option for the Offering Period will be automatically terminated, and no further Contributions for the purchase of shares will
be made for such Offering Period. If a Participant withdraws from an Offering Period, Contributions will not resume at the beginning of the succeeding Offering Period, unless the Participant re-enrolls in the
Plan in accordance with the provisions of Section 7. 
 (b)    No Effect on Future Participation. A
Participant’s withdrawal from an Offering Period will not have any effect upon his or her eligibility to participate in any similar plan that may hereafter be adopted by the Company or in succeeding Offering Periods that commence after the
termination of the Offering Period from which the Participant withdraws. 
 13.    Termination of Employment.
Upon a Participant’s ceasing to be an Eligible Employee, for any reason, he or she will be deemed to have elected to withdraw from the Plan and the Contributions credited to such Participant’s account during the Offering Period but not yet
used to purchase shares of Common Stock under the Plan will be returned to such Participant, or, in the case of his or her death, to the person or persons entitled thereto, and such Participant’s option will be automatically terminated. Unless
determined otherwise by the Administrator in a manner that, with respect to an Offering under the 423 Component, is permitted by, and compliant with, Code Section 423, a Participant whose employment transfers between entities through a
termination with an immediate rehire (with no break in service) by the Company or a Designated Company will not be treated as terminated under the Plan; however, if a Participant transfers from an Offering under the 423 Component to the Non-423 Component, the exercise of the option will be qualified under the 423 Component only to the extent it complies with Code Section 423; further, no Participant will be deemed to switch from an
Offering under the Non-423 Component to an Offering under the 423 Component or vice versa unless (and then only to the extent) such switch would not cause the 423 Component or any option
thereunder to fail to comply with Code Section 423. 

  
 -12- 

 14.    Section 409A. The Plan is intended to
be exempt from the application of Section 409A, and, to the extent not exempt, is intended to comply with Section 409A and any ambiguities herein will be interpreted to so be exempt from, or comply with, Section 409A. In furtherance
of the foregoing and notwithstanding any provision in the Plan to the contrary, if the Administrator determines that an option granted under the Plan may be subject to Section 409A or that any provision in the Plan would cause an option under
the Plan to be subject to Section 409A, the Administrator may amend the terms of the Plan and/or of an outstanding option granted under the Plan, or take such other action the Administrator determines is necessary or appropriate, in each case,
without the Participant’s consent, to exempt any outstanding option or future option that may be granted under the Plan from or to allow any such options to comply with Section 409A, but only to the extent any such amendments or action by
the Administrator would not violate Section 409A. Notwithstanding the foregoing, the Company and any of its Parent or Subsidiaries will have no liability, obligation or responsibility to reimburse, indemnify, or hold harmless a Participant or
any other party if the option to purchase Common Stock under the Plan that is intended to be exempt from or compliant with Section 409A is not so exempt or compliant or for any action taken by the Administrator with respect thereto. The Company
makes no representation that the option to purchase Common Stock under the Plan is compliant with Section 409A. 

15.    Rights as Stockholder. Until the shares of Common Stock are issued (as evidenced by the appropriate entry on
the books of the Company or of a duly authorized transfer agent of the Company), a Participant will have only the rights of an unsecured creditor with respect to such shares, and no right to vote or receive dividends or any other rights as a
stockholder will exist with respect to such shares. Shares of Common Stock to be delivered to a Participant under the Plan will be registered in the name of the Participant or, if so required under Applicable Laws, in the name of the Participant and
his or her spouse. 
 16.    Transferability. Neither Contributions credited to a Participant’s account nor
any rights with regard to the exercise of an option or to receive shares of Common Stock under the Plan may be assigned, transferred, pledged or otherwise disposed of in any way (other than by will or the laws of descent and distribution) by the
Participant. Any such attempt at assignment, transfer, pledge or other disposition will be without effect, except that the Company may treat such act as an election to withdraw funds from an Offering Period in accordance with Section 12 hereof.

 17.    Adjustments, Dissolution, Liquidation, Merger or Change in Control. 

(a)    Adjustments. In the event that any dividend or other distribution (whether in the form of cash, Common Stock,
other securities, or other property), recapitalization, stock split, reverse stock split, reorganization, merger, consolidation, split-up, spin-off, combination,
reclassification, repurchase, or exchange of Common Stock or other securities of the Company, or other change in the corporate structure of the Company affecting the Common Stock occurs (other than any ordinary dividends or other ordinary
distributions), the Administrator, in order to prevent diminution or enlargement of the benefits or potential benefits intended to be made available under the Plan, will adjust the number and class of Common Stock that may be delivered under the
Plan, the Purchase Price per share, the class and the number of shares of Common Stock covered by each option under the Plan that has not yet been exercised, and the numerical share limits of Sections 3 and 8(g). 

  
 -13- 

 (b)    Dissolution or Liquidation. In the event of the proposed
dissolution or liquidation of the Company, any Offering Period then in progress will be shortened by setting a New Exercise Date, and will terminate immediately prior to the consummation of such proposed dissolution or liquidation, unless provided
otherwise by the Administrator. The New Exercise Date will be before the date of the Company’s proposed dissolution or liquidation. The Administrator will notify each Participant in writing or electronically, prior to the New Exercise Date,
that the Exercise Date for the Participant’s option has been changed to the New Exercise Date and that the Participant’s option will be exercised automatically on the New Exercise Date, unless prior to such date the Participant has
withdrawn from the Offering Period as provided in Section 12 hereof. 
 (c)    Merger or Change in Control.
In the event of a merger of the Company with or into another corporation or other entity or Change in Control, each outstanding option will be assumed or an equivalent option substituted by the successor corporation or a Parent or Subsidiary of the
successor corporation. In the event that the successor corporation refuses to assume or substitute for the option, the Offering Period with respect to which such option relates will be shortened by setting a New Exercise Date on which such Offering
Period will end. The New Exercise Date will occur before the date of the Company’s proposed merger or Change in Control. The Administrator will notify each Participant in writing or electronically prior to the New Exercise Date, that the
Exercise Date for the Participant’s option has been changed to the New Exercise Date and that the Participant’s option will be exercised automatically on the New Exercise Date, unless prior to such date the Participant has withdrawn from
the Offering Period as provided in Section 12 hereof. 
 18.    Amendment or Termination. 

(a)    Amendment, Suspension, Termination. The Administrator, in its sole discretion, may amend, suspend, or
terminate the Plan, or any part thereof, at any time and for any reason. If the Plan is terminated, the Administrator, in its discretion, may elect to terminate all outstanding Offering Periods either immediately or upon completion of the purchase
of shares of Common Stock on the next Exercise Date (which may be sooner than originally scheduled, if determined by the Administrator in its discretion), or may elect to permit Offering Periods to expire in accordance with their terms (and subject
to any adjustment pursuant to Section 17). If the Offering Periods are terminated prior to expiration, all amounts then credited to Participants’ accounts that have not been used to purchase shares of Common Stock will be returned to the
Participants (without interest thereon, except as otherwise required under Applicable Laws, as further set forth in Section 22 hereof) as soon as administratively practicable. 

(b)    Certain Administrator Changes. Without stockholder consent and without limiting Section 18(a), the
Administrator will be entitled to change the Offering Periods and any Purchase Periods, designate separate Offerings, limit the frequency and/or number of changes in the amount withheld during an Offering Period, establish the exchange rate
applicable to amounts withheld in a currency other than U.S. dollars, permit Contributions in excess of the amount designated by a Participant in order to adjust for delays or mistakes in the Company’s processing of properly completed
Contribution elections, establish reasonable waiting and adjustment periods and/or accounting and crediting procedures to ensure that amounts applied toward the purchase of Common Stock for each Participant properly correspond with Contribution
amounts, and establish such other limitations or procedures as the Administrator determines in its sole discretion advisable that are consistent with the Plan. 

  
 -14- 

 (c)    Changes Due to Accounting Consequences. In the event the
Administrator determines that the ongoing operation of the Plan may result in unfavorable financial accounting consequences, the Administrator may, in its discretion and, to the extent necessary or desirable, modify, amend or terminate the Plan to
reduce or eliminate such accounting consequence including, but not limited to: 
 (i)    amending the Plan to conform
with the safe harbor definition under the Financial Accounting Standards Board Accounting Standards Codification Topic 718 (or any successor thereto), including with respect to an Offering Period underway at the time; 

(ii)    altering the Purchase Price for any Purchase Period or Offering Period including a Purchase Period or Offering
Period underway at the time of the change in Purchase Price; 
 (iii)    shortening any Purchase Period or Offering
Period by setting a New Exercise Date, including a Purchase Period or Offering Period underway at the time of the Administrator action; 

(iv)    reducing the maximum percentage of Compensation a Participant may elect to set aside as Contributions; and 

(v)    reducing the maximum number of shares of Common Stock a Participant may purchase during any Purchase Period or
Offering Period. 
 Such modifications or amendments will not require stockholder approval or the consent of any Plan Participants. 

19.    Conditions Upon Issuance of Shares. 

(a)    Legal Compliance. Shares of Common Stock will not be issued with respect to an option unless the exercise of
such option and the issuance and delivery of such shares pursuant thereto will comply with Applicable Laws and will be further subject to the approval of counsel for the Company with respect to such compliance. 

(b)    Investment Representations. As a condition to the exercise of an option, the Company may require the person
exercising such option to represent and warrant at the time of any such exercise that the shares are being purchased only for investment and without any present intention to sell or distribute such shares if, in the opinion of counsel for the
Company, such a representation is required. 
 20.    Term of Plan. The Plan will become effective upon the later
to occur of (a) its adoption by the Board or (b) the business day immediately prior to the Registration Date. It will continue in effect for a term of twenty (20) years, unless sooner terminated under Section 18. 

21.    Stockholder Approval. The Plan will be subject to approval by the stockholders of the Company within twelve
(12) months after the date the Plan is adopted by the Board. Such stockholder approval will be obtained in the manner and to the degree required under Applicable Laws. 

  
 -15- 

 22.    Interest. No interest will accrue on the Contributions of
a participant in the Plan, except as may be required by Applicable Laws, as determined by the Company, and if so required by the laws of a particular jurisdiction, will apply, with respect to Offerings under the 423 Component, to all
Participants in the relevant Offering, except to the extent otherwise permitted by U.S. Treasury Regulations Section 1.423-2(f). 

23.    No Effect on Employment. Neither the Plan nor any option under the Plan will confer upon any Participant any
right with respect to continuing the Participant’s employment with the Company or its Subsidiaries or Parents, as applicable, nor will they interfere in any way with the Participant’s right or the right of the Company and its Subsidiaries
or Parents, as applicable, to terminate such employment relationship at any time, free from any liability or any claim under the Plan. 

24.    Reports. Individual accounts will be maintained for each Participant in the Plan. Statements of account will
be given to participating Eligible Employees at least annually, which statements will set forth the amounts of Contributions, the Purchase Price, the number of shares of Common Stock purchased and the remaining cash balance, if any. 

25.    Notices. All notices or other communications by a Participant to the Company under or in connection with the
Plan will be deemed to have been duly given when received in the form and manner specified by the Company at the location, or by the person, designated by the Company for the receipt thereof. 

26.    Legal Construction. 

(a)    Gender and Number. Except where otherwise indicated by the context, any feminine term used herein also will
include the masculine and any masculine term used herein also will include the feminine; the plural will include the singular and the singular will include the plural. 

(b)    Severability. If any provision of the Plan is or becomes or is deemed to be invalid, illegal, or
unenforceable for any reason in any jurisdiction or as to any Participant, such invalidity, illegality, or unenforceability will not affect the remaining parts of the Plan, and the Plan will be construed and enforced as to such jurisdiction or
Participant as if the invalid, illegal, or unenforceable provision had not been included. 
 (c)    Governing
Law. The Plan will be governed by, and construed in accordance with, the laws of the State of Delaware, but without regard to its conflict of law provisions. 

(d)    Headings. Headings are provided herein for convenience only, and will not serve as a basis for
interpretation of the Plan. 
 27.    Compliance with Applicable Laws. The terms of this Plan are intended to
comply with all Applicable Laws and will be construed accordingly. 
 28.    Automatic Transfer to Low Price Offering
Period. Unless determined otherwise by the Administrator, this Section 28 applies to an Offering Period to the extent such Offering Period provides for more than one (1) Exercise Date within such Offering Period. To the extent
permitted by Applicable Laws, if the Fair Market Value of a share of Common Stock on any Exercise Date in an 

  
 -16- 

 
Offering Period is less than the Fair Market Value of a share of Common Stock on the Enrollment Date of such Offering Period, then all Participants in such Offering Period will be withdrawn
automatically from such Offering Period immediately after the exercise of their option on such Exercise Date and automatically re-enrolled in the immediately following Offering Period as of the first day
thereof. 
 *        *        * 

  
 -17- 

 EXHIBIT A 

ALX ONCOLOGY HOLDINGS INC. 

2020 EMPLOYEE STOCK PURCHASE PLAN 

SUBSCRIPTION AGREEMENT 

         Original
Application                                       
                                         
                                    Offering Date:
                                 

         Change in Payroll Deduction Rate 

1.                       
                  hereby elects to participate in the ALX Oncology Holdings Inc. 2020 Employee Stock Purchase Plan (the “Plan”) and
subscribes to purchase shares of the Company’s Common Stock in accordance with this Subscription Agreement and the Plan. Any capitalized terms not specifically defined in this Subscription Agreement will have the meaning ascribed to them under
the Plan. 
 2.    I hereby authorize and consent to payroll deductions from each paycheck in the amount of ____% of my
Compensation on each payday (from 0% to 15%) during the Offering Period in accordance with the Plan. (Please note that no fractional percentages are permitted.) I understand that only my first, one election to decrease the rate of my payroll
deductions may be applied with respect to an ongoing Offering Period in accordance with the terms of the Plan, and any subsequent election to decrease the rate of my payroll deductions during the same Offering Period, and any election to increase
the rate of my payroll deductions during any Offering Period, will not be applied to the ongoing Offering Period. 

3.    I understand that said payroll deductions will be accumulated for the purchase of shares of Common Stock at the
applicable Purchase Price determined in accordance with the Plan. I understand that if I do not withdraw from an Offering Period, any accumulated payroll deductions will be used to automatically exercise my option and purchase Common Stock under the
Plan. I further understand that if I am outside of the U.S., my payroll deductions will be converted to U.S. dollars at an exchange rate selected by the Company on the purchase date. 

4.    I have received a copy of the complete Plan and its accompanying prospectus. I understand that my participation in
the Plan is in all respects subject to the terms of the Plan. 
 5.    Shares of Common Stock purchased for me under the
Plan should be issued in the name(s) of                          (Eligible Employee or Eligible Employee and spouse only).

 6.    If I am a U.S. taxpayer, I understand that if I dispose of any shares received by me pursuant to the Plan
within two (2) years after the Offering Date (the first day of the Offering Period during which I purchased such shares) or one (1) year after the Exercise Date, I will be treated for federal income tax purposes as having received ordinary
income at the time of such disposition in an 

 
amount equal to the excess of the fair market value of the shares at the time such shares were purchased by me over the price that I paid for the shares. I hereby agree to notify the Company
in writing within thirty (30) days after the date of any disposition of my shares and I will make adequate provision for federal, state or other tax withholding obligations, if any, which arise upon the disposition of the Common
Stock. The Company may, but will not be obligated to, withhold from my compensation the amount necessary to meet any applicable withholding obligation including any withholding necessary to make available to the Company any tax deductions or
benefits attributable to sale or early disposition of Common Stock by me. If I dispose of such shares at any time after the expiration of the two (2) year and one (1) year holding periods, I understand that I will be treated for federal
income tax purposes as having received income only at the time of such disposition, and that such income will be taxed as ordinary income only to the extent of an amount equal to the lesser of (a) the excess of the fair market value of the
shares at the time of such disposition over the purchase price which I paid for the shares, or (b) fifteen percent (15%) of the fair market value of the shares on the first day of the Offering Period. The remainder of the gain, if any,
recognized on such disposition will be taxed as capital gain. 
 7.    For employees that may be subject to tax in non
U.S. jurisdictions, I acknowledge and agree that, regardless of any action taken by the Company or any Designated Company with respect to any or all income tax, social security, social insurances, National Insurance Contributions, payroll tax,
fringe benefit, or other tax-related items related to my participation in the Plan and legally applicable to me including, without limitation, in connection with the grant of such options, the purchase or sale
of shares of Common Stock acquired under the Plan and/or the receipt of any dividends on such shares (“Tax-Related Items”), the ultimate liability for all
Tax-Related Items is and remains my responsibility and may exceed the amount actually withheld by the Company or a Designated Company. Furthermore, I acknowledge that the Company and/or any Designated Company
(a) make no representations or undertakings regarding the treatment of any Tax-Related Items in connection with any aspect of the options under the Plan and (b) do not commit to and are under no
obligation to structure the terms of the grant of options or any aspect of my participation in the Plan to reduce or eliminate my liability for Tax-Related Items or achieve any particular tax result. Further,
if I have become subject to tax in more than one jurisdiction between the date of my enrollment and the date of any relevant taxable or tax withholding event, as applicable, I acknowledge that the Company and/or the Employer (or former employer, as
applicable) may be required to withhold or account for Tax-Related Items in more than one jurisdiction. 

Prior to the purchase of shares of Common Stock under the Plan or any other relevant taxable or tax withholding event, as applicable, I agree
to make adequate arrangements satisfactory to the Company and/or the applicable Designated Company to satisfy all Tax-Related Items. In this regard, I authorize the Company and/or the applicable Designated
Company, or their respective agents, at their discretion, to satisfy any applicable withholding obligations with regard to all Tax-Related Items by one or a combination of the following: (a) withholding
from my wages or Compensation paid to me by the Company and/or the applicable Designated Company; or (b) withholding from proceeds of the sale of the shares of Common Stock purchased under the Plan either through a voluntary sale or through a
mandatory sale arranged by the Company (on my behalf pursuant to this authorization). Depending on the withholding method, the Company may withhold or account for Tax-Related Items by considering applicable
maximum withholding rates, in which case I will receive a refund of any over-withheld amount in cash and will have no entitlement to the Common Stock equivalent. 

  
 -2- 

 Finally, I agree to pay to the Company or the applicable Designated Company any amount of Tax-Related Items that the Company or the applicable Designated Company may be required to withhold as a result of my participation in the Plan that cannot be satisfied by the means previously described. The Company
may refuse to purchase shares of Common Stock under the Plan on my behalf and/or refuse to issue or deliver the shares or the proceeds of the sale of shares if I fail to comply with my obligations in connection with the Tax-Related Items. 
 8.    By electing to participate in the Plan, I acknowledge,
understand and agree that: 
 (a)    the Plan is established voluntarily by the Company, it is discretionary in nature
and it may be modified, amended, suspended or terminated by the Company at any time, to the extent provided for in the Plan; 

(b)    all decisions with respect to future grants under the Plan, if applicable, will be at the sole discretion of the
Company; 
 (c)    the grant of options under the Plan will not create a right to employment or be interpreted as
forming or amending an employment or service contract with the Company, or any Designated Company, and will not interfere with the ability of the Company or any Designated Company, as applicable, to terminate my employment (if any); 

(d)    I am voluntarily participating in the Plan; 

(e)    the options granted under the Plan and the shares of Common Stock underlying such options, and the income and value
of same, are not intended to replace any pension rights or compensation; 
 (f)    the options granted under the Plan
and the shares of Common Stock underlying such options, and the income and value of same, are not part of my normal or expected compensation for any purpose, including, but not limited to, calculating any severance, resignation, termination,
redundancy, dismissal, end-of-service payments, bonuses, long-service awards, pension or retirement benefits or similar payments;

 (g)    the future value of the shares of Common Stock offered under the Plan is unknown, indeterminable and cannot be
predicted with certainty; 
 (h)    the shares of Common Stock that I acquire under the Plan may increase or decrease in
value, even below the Purchase Price; 
 (i)    no claim or entitlement to compensation or damages will arise from the
forfeiture of options granted to me under the Plan as a result of the termination of my status as an Eligible Employee (for any reason whatsoever, and whether or not later found to be invalid or in breach of employment laws in the jurisdiction where
I am employed or the terms of my employment agreement, if any) and, in consideration of the grant of options under the Plan to which I am otherwise not entitled, I irrevocably agree never to institute a claim against the Company, or any Designated
Company, waive my ability, if any, to bring such claim, and release the Company, and any Designated Company from any such claim that may arise; if, notwithstanding the foregoing, any such claim is allowed by a court of competent jurisdiction, I will
be deemed irrevocably to have agreed to not to pursue such claim and agree to execute any and all documents necessary to request dismissal or withdrawal of such claim; and 

  
 -3- 

 (j)    in the event of the termination of my status as an Eligible
Employee (for any reason whatsoever, whether or not later found to be invalid or in breach of employment laws in the jurisdiction where I am employed or the terms of my employment agreement, if any), my right to participate in the Plan and any
options granted to me under the Plan, if any, will terminate effective as of the date that I am no longer actively employed by the Company or one of its Designated Companies and, in any event, will not be extended by any notice period mandated under
the employment laws in the jurisdiction in which I am employed or the terms of my employment agreement, if any (e.g., active employment would not include a period of “garden leave” or similar period pursuant to the employment
laws in the jurisdiction in which I am employed or the terms of my employment agreement, if any); the Company will have the exclusive discretion to determine when I am no longer actively employed for purposes of my participation in the Plan
(including whether I may still be considered to be actively employed while on a leave of absence). 
 9.    I
understand that the Company and/or any Designated Company may collect, where permissible under applicable law certain personal information about me, including, but not limited to, my name, home address and telephone number, date of birth, social
insurance number or other identification number, salary, nationality, job title, any shares of Common Stock or directorships held in the Company, details of all options granted under the Plan or any other entitlement to shares of Common Stock
awarded, canceled, exercised, vested, unvested or outstanding in my favor (“Data”), for the exclusive purpose of implementing, administering and managing the Plan. I understand that Company may transfer my Data to the United States,
which is not considered by the European Commission to have data protection laws equivalent to the laws in my country. I understand that the Company will transfer my Data to its designated broker, or such other stock plan service provider as may be
selected by the Company in the future, which is assisting the Company with the implementation, administration and management of the Plan. I understand that the recipients of the Data may be located in the United States or elsewhere, and that a
recipient’s country of operation (e.g., the United States) may have different, including less stringent, data privacy laws that the European Commission or my jurisdiction does not consider to be equivalent to the protections in my country. I
understand that I may request a list with the names and addresses of any potential recipients of the Data by contacting my local human resources representative. I authorize the Company, the Company’s designated broker and any other possible
recipients which may assist the Company with implementing, administering and managing the Plan to receive, possess, use, retain and transfer the Data, in electronic or other form, for the sole purpose of implementing, administering and managing my
participation in the Plan. I understand that Data will be held only as long as is necessary to implement, administer and manage my participation in the Plan. I understand that that I may, at any time, view Data, request additional information about
the storage and processing of Data, require any necessary amendments to Data or refuse or withdraw the consents herein, in any case without cost, by contacting in writing my local human resources representative. Further, I understand that I am
providing the consents herein on a purely voluntary basis. If I do not consent, or if I later seek to revoke my consent, my employment status or career with the Company or any Designated Company will not be adversely affected; the only adverse
consequence of refusing or withdrawing my consent is that the Company would not be able to grant me options under the Plan or other equity awards, or 

  
 -4- 

 
administer or maintain such awards. Therefore, I understand that refusing or withdrawing my consent may affect my ability to participate in the Plan. For more information on the consequences of
my refusal to consent or withdrawal of consent, I understand that I may contact my local human resources representative. 
 If I am
an employee outside the U.S., I understand that in accordance with applicable law, I have the right to access, and to request a copy of, the Data held about me. I also understand that I have the right to discontinue the collection, processing, or
use of my Data, or supplement, correct, or request deletion of my Data. To exercise my rights, I may contact my local human resources representative. 

I hereby explicitly and unambiguously consent to the collection, use and transfer, in electronic or other form, of my personal data as
described herein and any other Plan materials by and among, as applicable, the Company and its Subsidiaries for the exclusive purpose of implementing, administering and managing my participation in the Plan. I understand that my consent will be
sought and obtained for any processing or transfer of my data for any purpose other than as described in the enrollment form and any other plan materials. 

10.    If I have received the Subscription Agreement or any other document related to the Plan translated into a language
other than English and if the meaning of the translated version is different than the English version, the English version will control, subject to applicable laws. 

11.    The provisions of the Subscription Agreement and these appendices are severable and if any one or more provisions
are determined to be illegal or otherwise unenforceable, in whole or in part, the remaining provisions nevertheless will be binding and enforceable. 

12.    Notwithstanding any provisions in this Subscription Agreement, I understand that if I am working or resident in a
country other than the United States, my participation in the Plan also will be subject to the additional terms and conditions set forth on Appendix A and any special terms and conditions for my country set forth on Appendix A. Moreover, if I
relocate to one of the countries included in Appendix A, the special terms and conditions for such country will apply to me to the extent the Company determines that the application of such terms and conditions is necessary or advisable for legal or
administrative reasons. Appendix A constitutes part of this Subscription Agreement and the provisions of this Subscription Agreement govern each Appendix (to the extent not superseded or supplemented by the terms and conditions set forth in the
applicable Appendix). 
 13.    I hereby agree to be bound by the terms of the Plan. The effectiveness of this
Subscription Agreement is dependent upon my eligibility to participate in the Plan. 
  

			
	 Employee’s Social
	 	
	 Security Number
	 	
	 (for U.S.-based employees):
	 	 
		
	 Employee’s Address:
	 	 
		
		 	 
		
		 	 
		
		 	 

  
 -5- 

 I UNDERSTAND THAT THIS SUBSCRIPTION AGREEMENT WILL REMAIN IN EFFECT THROUGHOUT SUCCESSIVE
OFFERING PERIODS UNLESS TERMINATED BY ME. 
  

			
	Dated:                                     
                                         
                	  	  
 Signature of Employee

  
 -6- 

 EXHIBIT B 

ALX ONCOLOGY HOLDINGS INC. 

2020 EMPLOYEE STOCK PURCHASE PLAN 

NOTICE OF WITHDRAWAL 
 The
undersigned Participant in the Offering Period of the ALX Oncology Holdings Inc. 2020 Employee Stock Purchase Plan (the “Plan”) that began on
                            ,          (the
“Offering Date”) hereby notifies the Company that he or she hereby withdraws from the Offering Period. He or she hereby directs the Company to pay to the undersigned as promptly as practicable all the payroll deductions credited to
his or her account with respect to such Offering Period. The undersigned understands and agrees that his or her option for such Offering Period will be terminated automatically. The undersigned understands further that no further payroll deductions
will be made for the purchase of shares in the current Offering Period and the undersigned will be eligible to participate in succeeding Offering Periods only by delivering to the Company a new Subscription Agreement. Capitalized terms not otherwise
defined herein will have the meaning ascribed to them under the Plan. 
  

			
	Name and Address of Participant:
	
	   

	
	   

	
	   

	
	Signature:
	
	   

 
			
		
	Date:

Source: [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00311-of-00352.parquet"}, [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00311-of-00352.parquet"}]]