Document:

EX-10.9

 Exhibit 10.9 

ALLAKOS INC. 
 EXECUTIVE
INCENTIVE COMPENSATION PLAN 
 1. Purposes of the Plan. The Plan is intended to increase stockholder value and the success of the
Company by motivating Employees to (i) perform to the best of their abilities and (ii) achieve the Company’s objectives. 

2. Definitions. 
 (a)
“Actual Award” means as to any Performance Period, the actual award (if any) payable to a Participant for the Performance Period, subject to the Committee’s authority under Section 3(d) to modify the award. 

(b) “Affiliate” means any corporation or other entity (including, but not limited to, partnerships and joint ventures)
controlled by the Company. 
 (c) “Board” means the Board of Directors of the Company. 

(d) “Bonus Pool” means the pool of funds available for distribution to Participants. Subject to the terms of the Plan, the
Committee establishes the Bonus Pool (if any) for each Performance Period. 
 (e) “Code” means the 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 promulgated thereunder, and any comparable provision of any future legislation or regulation
amending, supplementing or superseding such section or regulation. 
 (f) “Committee” means the committee appointed by the
Board (pursuant to Section 5) to administer the Plan. Unless and until the Board otherwise determines, the Board’s Compensation Committee will administer the Plan and be considered the Committee for purposes of the Plan. 

(g) “Company” means Allakos Inc., a Delaware corporation, or any successor thereto. 

(h) “Disability” means a permanent and total disability determined in accordance with uniform and nondiscriminatory standards
adopted by the Committee from time to time. 
 (i) “Employee” means any executive, officer, or key employee of the Company
or of an Affiliate, whether such individual is so employed at the time the Plan is adopted or becomes so employed subsequent to the adoption of the Plan. 

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

 (k) “Participant” means as to any Performance Period, an Employee who has been
selected by the Committee for participation in the Plan for that Performance Period. 
 (l) “Performance Period” means the
period of time for the measurement of the performance criteria that must be met to receive an Actual Award, as determined by the Committee in its sole discretion. A Performance Period may be divided into one or more shorter periods if, for example,
but not by way of limitation, the Committee desires to measure some performance criteria over 12 months and other criteria over 3 months. 

(m) “Plan” means this Executive Incentive Compensation Plan, as set forth in this instrument (including any appendix attached
hereto) and as hereafter amended from time to time. 
 (n) “Target Award” means the target award, at 100% of target level
performance achievement, payable under the Plan to a Participant for the Performance Period, as determined by the Committee in accordance with Section 3(b). 

3. Selection of Participants and Determination of Awards. 

(a) Selection of Participants. The Committee, in its sole discretion, will select the Employees who will be Participants for any
Performance Period. Participation in the Plan is in the sole discretion of the Committee, on a Performance Period by Performance Period basis. Accordingly, an Employee who is a Participant for a given Performance Period in no way is guaranteed or
assured of being selected for participation in any subsequent Performance Period or Performance Periods. 
 (b) Determination of Target
Awards. The Committee, in its sole discretion, will establish a Target Award for each Participant (which may be expressed as a percentage of a Participant’s average annual base salary for the Performance Period or a fixed dollar amount or
such other amount or based on such other formula as the Committee determines). 
 (c) Bonus Pool. Each Performance Period, the
Committee, in its sole discretion, may establish a Bonus Pool, which pool may be established before, during or after the applicable Performance Period. Actual Awards will be paid from the Bonus Pool. 

(d) Discretion to Modify Awards. Notwithstanding any contrary provision of the Plan, the Committee may, in its sole discretion and at
any time, (i) increase, reduce or eliminate a Participant’s Actual Award, and/or (ii) increase, reduce or eliminate the amount allocated to the Bonus Pool. The Actual Award may be below, at or above the Target Award, in the
Committee’s discretion. The Committee may determine the amount of any increase, reduction or elimination on the basis of such factors as it deems relevant, and will not be required to establish any allocation or weighting with respect to the
factors it considers. 
 (e) Discretion to Determine Criteria. Notwithstanding any contrary provision of the Plan, the Committee, in
its sole discretion, will determine the performance goals (if any) applicable to any Target Award (or portion thereof) which may include, without limitation: (i) research and development, (ii) regulatory milestones or regulatory-related
goals, (iii) gross margin, (iv) financial milestones, (v) new product or business development, (vi) operating 

  
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margin, (viii) product release timelines or other product release milestones, (ix) publications, (x) cash flow, (xi) procurement, (xii) savings, (xiii) internal
structure, (xiv) leadership development, (xv) project, function or portfolio-specific milestones, (xvi) license or research collaboration agreements, (xvii) capital raising, (xviii) initial public offering preparations,
(xix) patentability and (xx) individual objectives such as peer reviews or other subjective or objective criteria. As determined by the Committee, the performance goals may be based on generally accepted accounting principles
(“GAAP”) or non-GAAP results and any actual results may be adjusted by the Committee for one-time items or unbudgeted or unexpected items and/or payments of
Actual Awards under the Plan when determining whether the performance goals have been met. The goals may be on the basis of any factors the Committee determines relevant, and may be on an individual, divisional, business unit, segment or
Company-wide basis. Any criteria used may be measured on such basis as the Committee determines, including but not limited to, as applicable, (A) in absolute terms, (B) in combination with another performance goal or goals (for example,
but not by way of limitation, as a ratio or matrix), (C) in relative terms (including, but not limited to, results for other periods, passage of time and/or against another company or companies or an index or indices), (D) on a per-share basis, (E) against the performance of the Company as a whole or a segment of the Company and/or (F) on a pre-tax or
after-tax basis. The performance goals may differ from Participant to Participant and from award to award. Failure to meet the goals will result in a failure to earn the Target Award, except as provided in
Section 3(d). The Committee also may determine that a Target Award (or portion thereof) will not have a performance goal associated with it but instead will be granted (if at all) in the sole discretion of the Committee. 

4. Payment of Awards. 

(a) Right to Receive Payment. Each Actual Award will be paid solely from the general assets of the Company. Nothing in this Plan will
be construed to create a trust or to establish or evidence any Participant’s claim of any right other than as an unsecured general creditor with respect to any payment to which he or she may be entitled. 

(b) Timing of Payment. Payment of each Actual Award shall be made as soon as practicable after the end of the Performance Period to
which the Actual Award relates and after the Actual Award is approved by the Committee, but in no event later than the later of (i) the 15th day of the third month of the Fiscal Year immediately following the Fiscal Year in which the
Participant’s Actual Award is first no longer subject to a substantial risk of forfeiture, and (ii) March 15 of the calendar year immediately following the calendar year in which the Participant’s Actual Award is first no longer
subject to a substantial risk of forfeiture. Unless otherwise determined by the Committee, to earn an Actual Award a Participant must be employed by the Company or any Affiliate on the date the Actual Award is paid. 

It is the intent that this Plan be exempt from or comply with the requirements of Code Section 409A so that none of the payments to be
provided hereunder will be subject to the additional tax imposed under Code Section 409A, and any ambiguities herein will be interpreted to be so exempt or so comply. Each payment under this Plan is intended to constitute a separate payment for
purposes of Treasury Regulation Section 1.409A-2(b)(2). 

  
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 (c) Form of Payment. Each Actual Award generally will be paid in cash (or its equivalent)
in a single lump sum. The Committee reserves the right, in its sole discretion, to settle an Actual Award with a grant of an equity award under the Company’s then-current equity compensation plan, which equity award may have such terms and
conditions, including vesting, as the Committee determines in its sole discretion. 
 (d) Payment in the Event of Death or
Disability. If a Participant dies or is terminated due to his or her Disability prior to the payment of an Actual Award the Committee has determined will be paid for a prior Performance Period, the Actual Award will be paid to his or her estate
or to the Participant, as the case may be, subject to the Committee’s discretion to reduce or eliminate any Actual Award otherwise payable. 

5. Plan Administration. 

(a) Committee is the Administrator. The Plan will be administered by the Committee. The Committee will consist of not less than 2
members of the Board. The members of the Committee will be appointed from time to time by, and serve at the pleasure of, the Board. 
 (b)
Committee Authority. It will be the duty of the Committee to administer the Plan in accordance with the Plan’s provisions. The Committee will have all powers and discretion necessary or appropriate to administer the Plan and to control
its operation, including, but not limited to, the power to (i) determine which Employees will be granted awards, (ii) prescribe the terms and conditions of awards, (iii) interpret the Plan and the awards, (iv) adopt such
procedures and sub-plans as are necessary or appropriate to permit participation in the Plan by Employees who are foreign nationals or employed outside of the United States, (v) adopt rules for the
administration, interpretation and application of the Plan as are consistent therewith, and (vi) interpret, amend or revoke any such rules. 

(c) Decisions Binding. All determinations and decisions made by the Committee, the Board, and/or any delegate of the Committee pursuant
to the provisions of the Plan will be final, conclusive, and binding on all persons, and will be given the maximum deference permitted by law. 

(d) Delegation by Committee. The Committee, in its sole discretion and on such terms and conditions as it may provide, may delegate all
or part of its authority and powers under the Plan to one or more directors and/or officers of the Company. 
 (e)
Indemnification. Each person who is or will have been a member of the Committee will be indemnified and held harmless by the Company against and from (i) any loss, cost, liability, or expense that may be imposed upon or reasonably
incurred by him or her in connection with or resulting from any claim, action, suit, or proceeding to which he or she may be a party or in which he or she may be involved by reason of any action taken or failure to act under the Plan or any award,
and (ii) from any and all amounts paid by him or her in settlement thereof, with the Company’s approval, or paid by him or her in satisfaction of any judgment in any such claim, action, suit, or proceeding against him or her, provided he
or she will give the Company an opportunity, at its own expense, to handle and defend the same before he or she undertakes to handle and defend it on his or her own behalf. The foregoing right of 

  
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indemnification will not be exclusive of any other rights of indemnification to which such persons may be entitled under the Company’s Certificate of Incorporation or Bylaws, by contract, as
a matter of law, or otherwise, or under any power that the Company may have to indemnify them or hold them harmless. 
 6. General
Provisions. 
 (a) Tax Withholding. The Company (or the Affiliate employing the applicable Employee) will withhold all applicable
taxes from any Actual Award, including any federal, state and local taxes (including, but not limited to, the Participant’s FICA and SDI obligations). 

(b) No Effect on Employment or Service. Nothing in the Plan will interfere with or limit in any way the right of the Company (or the
Affiliate employing the applicable Employee) to terminate any Participant’s employment or service at any time, with or without cause. For purposes of the Plan, transfer of employment of a Participant between the Company and any one of its
Affiliates (or between Affiliates) will not be deemed a termination of employment. Employment with the Company and its Affiliates is on an at-will basis only. The Company expressly reserves the right, which
may be exercised at any time and without regard to when during a Performance Period such exercise occurs, to terminate any individual’s employment with or without cause, and to treat him or her without regard to the effect that such treatment
might have upon him or her as a Participant. 
 (c) Participation. No Employee will have the right to be selected to receive an award
under this Plan, or, having been so selected, to be selected to receive a future award. 
 (d) Successors. All obligations of the
Company under the Plan, with respect to awards granted hereunder, will be binding on any successor to the Company, whether the existence of such successor is the result of a direct or indirect purchase, merger, consolidation, or otherwise, of all or
substantially all of the business or assets of the Company. 
 (e) Nontransferability of Awards. No award granted under the Plan may
be sold, transferred, pledged, assigned, or otherwise alienated or hypothecated, other than by will, by the laws of descent and distribution. All rights with respect to an award granted to a Participant will be available during his or her lifetime
only to the Participant. 
 7. Amendment, Termination, and Duration. 

(a) Amendment, Suspension, or Termination. The Board or the Committee, in its sole discretion, may amend or terminate the Plan, or any
part thereof, at any time and for any reason. The amendment, suspension or termination of the Plan will not, without the consent of the Participant, alter or impair any rights or obligations under any Actual Award theretofore earned by such
Participant. No award may be granted during any period of suspension or after termination of the Plan. 
 (b) Duration of Plan. The
Plan will commence on the date first adopted by the Board or the Committee, and subject to Section 7(a) (regarding the Board’s and/or the Committee’s right to amend or terminate the Plan), will remain in effect thereafter until
terminated. 

  
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 8. Legal Construction. 

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

(b) Severability. In the event any provision of the Plan will be held illegal or invalid for any reason, the illegality or invalidity
will not affect the remaining parts of the Plan, and the Plan will be construed and enforced as if the illegal or invalid provision had not been included. 

(c) Requirements of Law. The granting of awards under the Plan will be subject to all applicable laws, rules and regulations, and to
such approvals by any governmental agencies or national securities exchanges as may be required. 
 (d) Governing Law. The Plan and
all awards will be construed in accordance with and governed by the laws of the State of California, but without regard to its conflict of law provisions. 

(e) Bonus Plan. The Plan is intended to be a “bonus program” as defined under U.S. Department of Labor regulation 2510.3-2(c) and will be construed and administered in accordance with such intention. 
 (f)
Captions. Captions are provided herein for convenience only, and will not serve as a basis for interpretation or construction of the Plan. 

*        *        * 

  
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 Exhibit 10.10 

ALLAKOS INC. 
 OUTSIDE
DIRECTOR COMPENSATION POLICY 
 Allakos Inc. (the “Company”) believes that the granting of equity and cash
compensation to its members of the Board of Directors (the “Board,” and members of the Board, the “Directors”) represents an effective tool to attract, retain and reward Directors who are not employees of the
Company (the “Outside Directors”). This Outside Director Compensation Policy (the “Policy”) is intended to formalize the Company’s policy regarding cash compensation and grants of equity to its Outside
Directors. Unless otherwise defined herein, capitalized terms used in this Policy will have the meaning given such term in the Company’s 2018 Equity Incentive Plan (the “Plan”). Each Outside Director will be solely responsible
for any tax obligations incurred by such Outside Director as a result of any equity or cash payments such Outside Director receives under this Policy. 

This Policy will be effective as of the business day immediately prior to the Registration Date (the “Effective Date”). 

1. CASH COMPENSATION 

Annual Cash Retainer 
 Each Outside
Director will be paid an annual cash retainer of $40,000. There are no per-meeting attendance fees for attending Board meetings. This cash compensation will be paid quarterly in arrears on a prorated basis.

 Committee Annual Cash Retainer 
 As
of the Effective Date, each Outside Director who serves as the chairman of the Board or the chairman or a member of a committee of the Board will be eligible to earn additional annual fees (paid quarterly in arrears on a prorated basis) as follows:

  

					
	 Chair of the Board:
	  	$	30,000	 
	 Chair of Audit Committee:
	  	$	15,000	 
	 Member of Audit Committee:
	  	$	7,500	 
	 Chair of Compensation Committee:
	  	$	10,000	 
	 Member of Compensation Committee:
	  	$	5,000	 
	 Chair of Nominating and Governance Committee:
	  	$	8,000	 
	 Member of Nominating and Governance Committee:
	  	$	4,000	 

 For clarity, each Outside Director who serves as the chairman of a committee will not receive the additional
annual fee as a member of the committee. 

 2. EQUITY COMPENSATION 

Outside Directors will be entitled to receive all types of Awards (except Incentive Stock Options) under the Plan (or the applicable
equity plan in place at the time of grant), including discretionary Awards not covered under this Policy. All grants of Awards to Outside Directors pursuant to this Section 2 will be automatic and nondiscretionary, except as otherwise
provided herein, and will be made in accordance with the following provisions: 
 (a) Initial Option. Each person who first becomes an
Outside Director on or following the Effective Date will be granted a Nonstatutory Stock Option to purchase 40,000 Shares (the “Initial Option”), provided, however, that a Director who is an Employee (an “Inside
Director”) who ceases to be an Inside Director, but who remains a Director, will not receive an Initial Option. The Initial Option will be granted no later than the date of the first Board or Compensation Committee of the Board (the
“Compensation Committee”) meeting occurring on or after the date on which such individual first becomes an Outside Director, whether through election by the stockholders of the Company or appointment by the Board to fill a vacancy.

 (b) Annual Option. On the date of each annual meeting of the Company’s stockholders (the “Annual Meeting”),
each Outside Director will be automatically granted a Nonstatutory Stock Option to purchase 20,000 Shares (an “Annual Option”). 

(c) No Discretion. No person will have any discretion to select which Outside Directors will be granted an Initial Option or Annual
Option under this Policy or to determine the number of Shares to be covered by such Initial Option or Annual Option, as applicable (except as provided in Sections 5 and 7 below). 

(d) Terms. The terms and conditions of each Initial Option or Annual Option will be as follows: 

(i) Subject to Section 14 of the Plan and Section 2(e) of this Policy, each Initial Option will vest as to 1/36th of the Shares subject to the Initial Option each month following the commencement of the applicable Outside Director’s service as an Outside Director (the “Vesting Commencement
Date”) on the same day of the month as the Vesting Commencement Date (or if there is no corresponding day on the last day of the month), in each case subject to the Outside Director remaining a Service Provider through such date. 

(ii) Subject to Section 14 of the Plan and Section 2(e) of this Policy, each Annual Option will become fully vested on the earlier
of (i) the one-year anniversary of the date of grant of such Annual Option or (ii) the date of the next Annual Meeting that occurs following the grant of such Annual Option, in each case subject to
the Outside Director remaining a Service Provider through such date. 
 (iii) The term of each Initial Option and Annual Option granted
under the Policy will be ten years, subject to earlier termination as provided in the Plan. 
 (iv) Each Initial Option and Annual Option
granted under the Policy will have an exercise price per Share equal to 100% of the Fair Market Value per Share on the grant date. 

  
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 (e) Change in Control. In the event of a Change in Control, all of an Outside
Director’s outstanding Awards (including his or her Initial Option and his or her Annual Options, as applicable) will become fully vested and exercisable (if applicable) immediately prior to such Change in Control. 

3. TRAVEL EXPENSES 

Each Outside Director’s reasonable, customary, and documented travel expenses to Board meetings will be reimbursed by the Company. 

4. ADDITIONAL PROVISIONS 

All provisions of the Plan not inconsistent with this Policy will apply to Awards granted to Outside Directors. 

5. 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, 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, the Administrator, in order to prevent diminution or enlargement of the benefits or potential benefits intended to be made available
under this Policy, will adjust the number of Shares issuable pursuant to Awards granted under this Policy. 
 6.
SECTION 409A 
 In no event will cash compensation or expense
reimbursement payments under this Policy be paid after the later of (i) the 15th day of the 3rd month following the end of the Company’s fiscal year in which the compensation is earned or expenses are incurred, as applicable, or
(ii) the 15th day of the 3rd month following the end of the calendar year in which the compensation is earned or expenses are incurred, as applicable, in compliance with the “short-term deferral” exception under Section 409A of
the Internal Revenue Code of 1986, as amended, and the final regulations and guidance thereunder, as may be amended from time to time (together, “Section 409A”). It is the intent of this Policy that this Policy
and all payments hereunder be exempt from or otherwise comply with the requirements of Section 409A so that none of the compensation to be provided hereunder 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 comply. In no event will the Company reimburse an Outside Director for any taxes imposed or other costs incurred as a result of Section 409A. 

7. REVISIONS 

The Board may amend, alter, suspend or terminate this Policy at any time and for any reason. No amendment, alteration, suspension or
termination of this Policy will materially impair the rights of an Outside Director with respect to compensation that already has been paid or awarded, unless otherwise mutually agreed between the Outside Director and the Company. Termination of
this Policy will not affect the Board’s or the Compensation Committee’s ability to exercise the powers granted to it under the Plan with respect to Awards granted under the Plan pursuant to this Policy prior to the date of such
termination. 

  
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