Document:

EX-10.2

 Exhibit 10.2 

ADAGIO THERAPEUTICS, INC. 

2021 EQUITY INCENTIVE PLAN 

ADOPTED BY THE BOARD OF DIRECTORS:
JULY 27, 2021 
 APPROVED BY THE STOCKHOLDERS:
JULY 29, 2021 
  

	1.	 GENERAL. 

(a) Successor to and Continuation of Prior Plan. The Plan is the successor to and continuation of the Prior Plan. As of the
Effective Date, (i) no additional awards may be granted under the Prior Plan; (ii) the Prior Plan’s Available Reserve plus any Returning Shares will become available for issuance pursuant to Awards granted under this Plan; and
(iii) all outstanding awards granted under the Prior Plan will remain subject to the terms of the Prior Plan (except to the extent such outstanding awards result in Returning Shares that become available for issuance pursuant to Awards granted
under this Plan). All Awards granted under this Plan will be subject to the terms of this Plan. 
 (b) Plan Purpose. The
Company, by means of the Plan, seeks to secure and retain the services of Employees, Directors and Consultants, to provide incentives for such persons to exert maximum efforts for the success of the Company and any Affiliate and to provide a means
by which such persons may be given an opportunity to benefit from increases in value of the Common Stock through the granting of Awards. 

(c) Available Awards. The Plan provides for the grant of the following Awards: (i) Incentive Stock Options;
(ii) Nonstatutory Stock Options; (iii) SARs; (iv) Restricted Stock Awards; (v) RSU Awards; (vi) Performance Awards; and (vii) Other Awards. 

(d) Adoption Date; Effective Date. The Plan will come into existence on the
Adoption Date, but no Award may be granted prior to the Effective Date. 
  

	2.	 SHARES SUBJECT TO THE PLAN.

 (a) Share Reserve. Subject to adjustment in accordance with Section 2(c) and any
adjustments as necessary to implement any Capitalization Adjustments, the aggregate number of shares of Common Stock that may be issued pursuant to Awards will not exceed 35,075,122 shares (the “Initial Reserve”), which is
the sum of: (i) 11,413,572 new shares, plus (ii) the number of shares of Common Stock (not to exceed 23,661,550 shares of Common Stock), which represents (A) the Prior Plan’s Available Reserve plus (B) the number of Returning Shares,
if any, as such shares become available from time to time. In addition, subject to any adjustments as necessary to implement any Capitalization Adjustments, such aggregate number of shares of Common Stock will automatically increase on
January 1 of each year for a period of ten years commencing on January 1, 2022 and ending on (and including) January 1, 2031, in an amount equal to five percent (5%) of the total number of shares of Common Stock outstanding on December 31 of
the preceding year; provided, however, that the Board may act prior to January 1st of a given year to provide that the increase for such year will be a lesser number of shares of Common Stock
(such increase, the “Annual Increase”). 

  
 1 

 (b) Aggregate Incentive Stock Option Limit. Notwithstanding anything to the
contrary in Section 2(a) and subject to any adjustments as necessary to implement any Capitalization Adjustments, the aggregate maximum number of shares of Common Stock that may be issued pursuant to the exercise of Incentive Stock Options
shall not exceed the Initial Reserve cumulatively increased on January 1, 2022 and each January 1st thereafter by the lesser of (i) the Annual Increase for such year or (ii)
23,827,144 shares of Common Stock. 
 (c) Share Reserve Operation. 

(i) Limit Applies to Common Stock Issued Pursuant to Awards. For clarity, the Share Reserve is a limit on the number of
shares of Common Stock that may be issued pursuant to Awards and does not limit the granting of Awards, except that the Company will keep available at all times the number of shares of Common Stock reasonably required to satisfy its obligations to
issue shares pursuant to such Awards. Shares may be issued in connection with a merger or acquisition as permitted by, as applicable, Nasdaq Listing Rule 5635(c), NYSE Listed Company Manual Section 303A.08, NYSE American Company Guide
Section 711 or other applicable rule, and such issuance will not reduce the number of shares available for issuance under the Plan. 

(ii) Actions that Do Not Constitute Issuance
of Common Stock and Do Not Reduce Share Reserve. The following actions do not result in an issuance of shares under the Plan and accordingly do not
reduce the number of shares subject to the Share Reserve and available for issuance under the Plan: (1) the expiration or termination of any portion of an Award without the shares covered by such portion of the Award having been issued;
(2) the settlement of any portion of an Award in cash (i.e., the Participant receives cash rather than Common Stock); (3) the withholding of shares that would otherwise be issued by the Company to satisfy the exercise, strike or purchase
price of an Award; or (4) the withholding of shares that would otherwise be issued by the Company to satisfy a tax withholding obligation in connection with an Award. 

(iii) Reversion of Previously Issued Shares of Common Stock to Share Reserve. The following shares of Common
Stock previously issued pursuant to an Award and accordingly initially deducted from the Share Reserve will be added back to the Share Reserve and again become available for issuance under the Plan: (1) any shares that are forfeited back to or
repurchased by the Company because of a failure to meet a contingency or condition required for the vesting of such shares; (2) any shares that are reacquired by the Company to satisfy the exercise, strike or purchase price of an Award; and
(3) any shares that are reacquired by the Company to satisfy a tax withholding obligation in connection with an Award. 
  

	3.	 ELIGIBILITY AND LIMITATIONS. 

(a) Eligible Award Recipients. Subject to the terms of the Plan, Employees, Directors and
Consultants are eligible to receive Awards. 
 (b) Specific Award Limitations. 

(i) Limitations on Incentive Stock Option Recipients. Incentive Stock Options may be granted only to Employees of the
Company or a “parent corporation” or “subsidiary corporation” thereof (as such terms are defined in Sections 424(e) and (f) of the Code). 

  
 2 

 (ii) Incentive Stock Option $100,000 Limitation. To the extent that the
aggregate Fair Market Value (determined at the time of grant) of Common Stock with respect to which Incentive Stock Options are exercisable for the first time by any Optionholder during any calendar year (under all plans of the Company and any
Affiliates) exceeds $100,000 (or such other limit established in the Code) or otherwise does not comply with the rules governing Incentive Stock Options, the Options or portions thereof that exceed such limit (according to the order in which they
were granted) or otherwise do not comply with such rules will be treated as Nonstatutory Stock Options, notwithstanding any contrary provision of the applicable Option Agreement(s). 

(iii) Limitations on Incentive Stock Options Granted
to Ten Percent Stockholders. A Ten Percent Stockholder may not be granted an Incentive Stock Option unless (1) the exercise price of such Option is at least 110% of the Fair Market
Value on the date of grant of such Option and (2) the Option is not exercisable after the expiration of five years from the date of grant of such Option. 

(iv) Limitations on Nonstatutory Stock Options and SARs. Nonstatutory Stock Options and SARs may not be granted to
Employees, Directors and Consultants unless the stock underlying such Awards is treated as “service recipient stock” under Section 409A or unless such Awards otherwise comply with the requirements of Section 409A. 

(c) Aggregate Incentive Stock Option Limit. The aggregate maximum number of shares of Common Stock that may be issued
pursuant to the exercise of Incentive Stock Options is the number of shares specified in Section 2(b). 
 (d) Non-Employee Director Compensation Limit. The aggregate value of all compensation granted or paid, as applicable, to any individual for service as a Non-Employee Director with respect to any calendar year, including Awards granted and cash fees paid by the Company to such Non-Employee Director, will not exceed $1,500,000
in total value, calculating the value of any equity awards based on the grant date fair value of such equity awards for financial reporting purposes. The limitations in this Section 3(d) shall apply commencing with the first calendar year that
begins following the Effective Date. 
  

	4.	 OPTIONS AND STOCK APPRECIATION
RIGHTS. 

 Each Option and SAR will have such terms and conditions as determined by the Board. Each
Option will be designated in writing as an Incentive Stock Option or Nonstatutory Stock Option at the time of grant; provided, however, that if an Option is not so designated or if an Option designated as an Incentive Stock Option fails to qualify
as an Incentive Stock Option, then such Option will be a Nonstatutory Stock Option, and the shares purchased upon exercise of each type of Option will be separately accounted for. Each SAR will be denominated in shares of Common Stock equivalents.
The terms and conditions of separate Options and SARs need not be identical; provided, however, that each Option Agreement and SAR Agreement will conform (through incorporation of provisions hereof by reference in the Award Agreement or otherwise)
to the substance of each of the following provisions: 

  
 3 

 (a) Term. Subject to Section 3(b) regarding Ten Percent
Stockholders, no Option or SAR will be exercisable after the expiration of ten years from the date of grant of such Award or such shorter period specified in the Award Agreement. 

(b) Exercise or Strike Price. Subject to Section 3(b) regarding Ten Percent
Stockholders, the exercise or strike price of each Option or SAR will not be less than 100% of the Fair Market Value on the date of grant of such Award. Notwithstanding the foregoing, an Option or SAR may be granted with an exercise or strike price
lower than 100% of the Fair Market Value on the date of grant of such Award if such Award is granted pursuant to an assumption of or substitution for another option or stock appreciation right pursuant to a Corporate Transaction and in a manner
consistent with the provisions of Sections 409A and, if applicable, 424(a) of the Code. 
 (c) Exercise Procedure and Payment of
Exercise Price for Options. In order to exercise an Option, the Participant must provide notice of exercise to the Plan Administrator in accordance with the procedures specified in the Option Agreement or otherwise provided by the
Company. The Board has the authority to grant Options that do not permit all of the following methods of payment (or otherwise restrict the ability to use certain methods) and to grant Options that require the consent of the Company to utilize a
particular method of payment. The exercise price of an Option may be paid, to the extent permitted by Applicable Law and as determined by the Board, by one or more of the following methods of payment to the extent set forth in the Option Agreement:

 (i) by cash or check, bank draft or money order payable to the Company; 

(ii) pursuant to a “cashless exercise” program developed under Regulation T as promulgated by the Federal Reserve Board that,
prior to the issuance of the Common Stock subject to the Option, results in either the receipt of cash (or check) by the Company or the receipt of irrevocable instructions to pay the exercise price to the Company from the sales proceeds; 

(iii) by delivery to the Company (either by actual delivery or attestation) of shares of Common Stock that are already owned by the
Participant free and clear of any liens, claims, encumbrances or security interests, with a Fair Market Value on the date of exercise that does not exceed the exercise price, provided that (1) at the time of exercise the Common Stock is
publicly traded, (2) any remaining balance of the exercise price not satisfied by such delivery is paid by the Participant in cash or other permitted form of payment, (3) such delivery would not violate any Applicable Law or agreement
restricting the redemption of the Common Stock, (4) any certificated shares are endorsed or accompanied by an executed assignment separate from certificate, and (5) such shares have been held by the Participant for any minimum period
necessary to avoid adverse accounting treatment as a result of such delivery; 
 (iv) if the Option is a Nonstatutory Stock Option, by
a “net exercise” arrangement pursuant to which the Company will reduce the number of shares of Common Stock issuable upon exercise by the largest whole number of shares with a Fair Market Value on the date of exercise that does not exceed
the exercise price, provided that (1) such shares used to pay the exercise price will not be exercisable thereafter and (2) any remaining balance of the exercise price not satisfied by such net exercise is paid by the Participant in cash
or other permitted form of payment; or 

  
 4 

 (v) in any other form of consideration that may be acceptable to the Board and
permissible under Applicable Law. 
 (d) Exercise Procedure and Payment of Appreciation Distribution for SARs. In order
to exercise any SAR, the Participant must provide notice of exercise to the Plan Administrator in accordance with the SAR Agreement. The appreciation distribution payable to a Participant upon the exercise of a SAR will not be greater than an amount
equal to the excess of (i) the aggregate Fair Market Value on the date of exercise of a number of shares of Common Stock equal to the number of Common Stock equivalents that are vested and being exercised under such SAR, over (ii) the strike
price of such SAR. Such appreciation distribution may be paid to the Participant in the form of Common Stock or cash (or any combination of Common Stock and cash) or in any other form of payment, as determined by the Board and specified in the SAR
Agreement. 
 (e) Transferability. Options and SARs may not be transferred to third party financial institutions for value. The
Board may impose such additional limitations on the transferability of an Option or SAR as it determines. In the absence of any such determination by the Board, the following restrictions on the transferability of Options and SARs will apply,
provided that except as explicitly provided herein, neither an Option nor a SAR may be transferred for consideration and provided, further, that if an Option is an Incentive Stock Option, such Option may be deemed to be a
Nonstatutory Stock Option as a result of such transfer: 
 (i) Restrictions on Transfer. An Option or SAR will not be
transferable, except by will or by the laws of descent and distribution, and will be exercisable during the lifetime of the Participant only by the Participant; provided, however, that the Board may permit transfer of an Option or SAR in a manner
that is not prohibited by applicable tax and securities laws upon the Participant’s request, including to a trust if the Participant is considered to be the sole beneficial owner of such trust (as determined under Section 671 of the Code
and applicable state law) while such Option or SAR is held in such trust, provided that the Participant and the trustee enter into a transfer and other agreements required by the Company. 

(ii) Domestic Relations Orders. Notwithstanding the foregoing, subject to the execution of transfer documentation in a
format acceptable to the Company and subject to the approval of the Board or a duly authorized Officer, an Option or SAR may be transferred pursuant to a domestic relations order. 

(f) Vesting. The Board may impose such restrictions on or conditions to the vesting and/or exercisability of an Option or
SAR as determined by the Board. Except as otherwise provided in the Award Agreement or other written agreement between a Participant and the Company or an Affiliate, vesting of Options and SARs will cease upon termination of the Participant’s
Continuous Service. 

  
 5 

 (g) Termination of Continuous Service for Cause. Except as explicitly
otherwise provided in the Award Agreement or other written agreement between a Participant and the Company or an Affiliate, if a Participant’s Continuous Service is terminated for Cause, the Participant’s Options and SARs will terminate
and be forfeited immediately upon such termination of Continuous Service, and the Participant will be prohibited from exercising any portion (including any vested portion) of such Awards on and after the date of such termination of Continuous
Service and the Participant will have no further right, title or interest in such forfeited Award, the shares of Common Stock subject to the forfeited Award, or any consideration in respect of the forfeited Award. 

(h) Post-Termination Exercise Period Following Termination
of Continuous Service for Reasons Other than Cause. Subject to Section 4(i), if a Participant’s Continuous Service terminates for any reason other than for Cause, the Participant may exercise
his or her Option or SAR to the extent vested, but only within the following period of time or, if applicable, such other period of time provided in the Award Agreement or other written agreement between a Participant and the Company or an
Affiliate; provided, however, that in no event may such Award be exercised after the expiration of its maximum term (as set forth in Section 4(a)): 

(i) three months following the date of such termination if such termination is a termination without Cause (other than any termination
due to the Participant’s Disability or death); 
 (ii) 12 months following the date of such termination if such termination is
due to the Participant’s Disability; 
 (iii) 18 months following the date of such termination if such termination is due to the
Participant’s death; or 
 (iv) 18 months following the date of the Participant’s death if such death occurs following the
date of such termination but during the period such Award is otherwise exercisable (as provided in (i) or (ii) above). 
 Following the date of such
termination, to the extent the Participant does not exercise such Award within the applicable Post-Termination Exercise Period (or, if earlier, prior to the expiration of the maximum term of such Award), such unexercised portion of the Award will
terminate, and the Participant will have no further right, title or interest in the terminated Award, the shares of Common Stock subject to the terminated Award, or any consideration in respect of the terminated Award. 

(i) Restrictions on Exercise; Extension of Exercisability. A Participant may not exercise an Option or SAR at any time
that the issuance of shares of Common Stock upon such exercise would violate Applicable Law. Except as otherwise provided in the Award Agreement or other written agreement between a Participant and the Company or an Affiliate, if a
Participant’s Continuous Service terminates for any reason other than for Cause and, at any time during the last thirty days of the applicable Post-Termination Exercise Period: (i) the exercise of the Participant’s Option or SAR would
be prohibited solely because the issuance of shares of Common Stock upon such exercise would violate Applicable Law, or (ii) the immediate sale of any shares of Common 

  
 6 

 Stock issued upon such exercise would violate the Company’s Trading Policy, then the applicable
Post-Termination Exercise Period will be extended to the last day of the calendar month that commences following the date the Award would otherwise expire, with an additional extension of the exercise period to the last day of the next calendar
month to apply if any of the foregoing restrictions apply at any time during such extended exercise period, generally without limitation as to the maximum permitted number of extensions); provided, however, that in no event may such Award be
exercised after the expiration of its maximum term (as set forth in Section 4(a)). 
 (j)
Non-Exempt Employees. No Option or SAR, whether or not vested, granted to an Employee who is a non-exempt employee for purposes of the Fair Labor Standards
Act of 1938, as amended, will be first exercisable for any shares of Common Stock until at least six months following the date of grant of such Award. Notwithstanding the foregoing, in accordance with the provisions of the Worker Economic
Opportunity Act, any vested portion of such Award may be exercised earlier than six months following the date of grant of such Award in the event of (i) such Participant’s death or Disability, (ii) a Corporate Transaction in which
such Award is not assumed, continued or substituted, (iii) a Change in Control, or (iv) such Participant’s retirement (as such term may be defined in the Award Agreement or another applicable agreement or, in the absence of any such
definition, in accordance with the Company’s then current employment policies and guidelines). This Section 4(j) is intended to operate so that any income derived by a non-exempt employee in
connection with the exercise or vesting of an Option or SAR will be exempt from his or her regular rate of pay. 
 (k) Whole
Shares. Options and SARs may be exercised only with respect to whole shares of Common Stock or their equivalents. 
  

	5.	 AWARDS OTHER THAN OPTIONS AND
STOCK APPRECIATION RIGHTS. 

 (a) Restricted Stock Awards and
RSU Awards. Each Restricted Stock Award and RSU Award will have such terms and conditions as determined by the Board; provided, however, that each Restricted Stock Award Agreement and RSU Award Agreement will conform (through
incorporation of the provisions hereof by reference in the Award Agreement or otherwise) to the substance of each of the following provisions: 

(i) Form of Award. 

(1) Restricted Stock Awards: To the extent consistent with the Company’s Bylaws, at the Board’s election, shares of Common
Stock subject to a Restricted Stock Award may be (A) held in book entry form subject to the Company’s instructions until such shares become vested or any other restrictions lapse, or (B) evidenced by a certificate, which certificate
will be held in such form and manner as determined by the Board. Unless otherwise determined by the Board, a Participant will have voting and other rights as a stockholder of the Company with respect to any shares subject to a Restricted Stock
Award. 
 (2) RSU Awards: An RSU Award represents a Participant’s right to be issued on a future date the number of shares of
Common Stock that is equal to the number of restricted stock units subject to the RSU Award. As a holder of an RSU Award, a Participant is an unsecured creditor of the Company with respect to the Company’s unfunded obligation, if any, 

  
 7 

 to issue shares of Common Stock in settlement of such Award and nothing contained in the Plan or any RSU
Agreement, and no action taken pursuant to its provisions, will create or be construed to create a trust of any kind or a fiduciary relationship between a Participant and the Company or an Affiliate or any other person. A Participant will not have
voting or any other rights as a stockholder of the Company with respect to any RSU Award (unless and until shares are actually issued in settlement of a vested RSU Award). 

(ii) Consideration. 

(1) Restricted Stock Awards: A Restricted Stock Award may be granted in consideration for (A) cash or check, bank draft or money
order payable to the Company, (B) services to the Company or an Affiliate, or (C) any other form of consideration as the Board may determine and permissible under Applicable Law. 

(2) RSU Awards: Unless otherwise determined by the Board at the time of grant, an RSU Award will be granted in consideration for the
Participant’s services to the Company or an Affiliate, such that the Participant will not be required to make any payment to the Company (other than such services) with respect to the grant or vesting of the RSU Award, or the issuance of any
shares of Common Stock pursuant to the RSU Award. If, at the time of grant, the Board determines that any consideration must be paid by the Participant (in a form other than the Participant’s services to the Company or an Affiliate) upon the
issuance of any shares of Common Stock in settlement of the RSU Award, such consideration may be paid in any form of consideration as the Board may determine and permissible under Applicable Law. 

(iii) Vesting. The Board may impose such restrictions on or conditions to the vesting of a Restricted Stock Award or RSU
Award as determined by the Board. Except as otherwise provided in the Award Agreement or other written agreement between a Participant and the Company or an Affiliate, vesting of Restricted Stock Awards and RSU Awards will cease upon termination of
the Participant’s Continuous Service. 
 (iv) Termination of Continuous
Service. Except as otherwise provided in the Award Agreement or other written agreement between a Participant and the Company or an Affiliate, if a Participant’s Continuous Service terminates for any reason, (1) the
Company may receive through a forfeiture condition or a repurchase right any or all of the shares of Common Stock held by the Participant under his or her Restricted Stock Award that have not vested as of the date of such termination as set forth in
the Restricted Stock Award Agreement and the Participant will have no further right, title or interest in the Restricted Stock Award, the shares of Common Stock subject to the Restricted Stock Award, or any consideration in respect of the Restricted
Stock Award and (2) any portion of his or her RSU Award that has not vested will be forfeited upon such termination and the Participant will have no further right, title or interest in the RSU Award, the shares of Common Stock issuable pursuant
to the RSU Award, or any consideration in respect of the RSU Award. 
 (v) Dividends and
Dividend Equivalents. Dividends or dividend equivalents may be paid or credited, as applicable, with respect to any shares of Common Stock subject to a Restricted Stock Award or RSU Award, as determined by the Board
and specified in the Award Agreement. 

  
 8 

 (vi) Settlement of RSU Awards. An RSU Award may be settled by the issuance of
shares of Common Stock or cash (or any combination thereof) or in any other form of payment, as determined by the Board and specified in the RSU Award Agreement. At the time of grant, the Board may determine to impose such restrictions or conditions
that delay such delivery to a date following the vesting of the RSU Award. 
 (b) Performance Awards. With
respect to any Performance Award, the length of any Performance Period, the Performance Goals to be achieved during the Performance Period, the other terms and conditions of such Award, and the measure of whether and to what degree such Performance
Goals have been attained will be determined by the Board. 
 (c) Other Awards. Other forms of Awards valued in whole or in part
by reference to, or otherwise based on, Common Stock, including the appreciation in value thereof, may be granted either alone or in addition to Awards provided for under Section 4 and the preceding provisions of this Section 5. Subject to
the provisions of the Plan, the Board will have sole and complete discretion to determine the persons to whom and the time or times at which such Other Awards will be granted, the number of shares of Common Stock (or the cash equivalent thereof) to
be granted pursuant to such Other Awards and all other terms and conditions of such Other Awards. 
  

	6.	 ADJUSTMENTS UPON CHANGES IN
COMMON STOCK; OTHER CORPORATE EVENTS. 

(a) Capitalization Adjustments. In the event of a Capitalization Adjustment, the Board shall appropriately and proportionately
adjust: (i) the class(es) and maximum number of shares of Common Stock subject to the Plan and the maximum number of shares by which the Share Reserve may annually increase pursuant to Section 2(a); (ii) the class(es) and maximum number of
shares that may be issued pursuant to the exercise of Incentive Stock Options pursuant to Section 2(b); and (iii) the class(es) and number of securities and exercise price, strike price or purchase price of Common Stock subject to
outstanding Awards. The Board shall make such adjustments, and its determination shall be final, binding and conclusive. Notwithstanding the foregoing, no fractional shares or rights for fractional shares of Common Stock shall be created in order to
implement any Capitalization Adjustment. The Board shall determine an appropriate equivalent benefit, if any, for any fractional shares or rights to fractional shares that might be created by the adjustments referred to in the preceding provisions
of this Section. 
 (b) Dissolution or Liquidation. Except as otherwise provided in the
Award Agreement, in the event of a dissolution or liquidation of the Company, all outstanding Awards (other than Awards consisting of vested and outstanding shares of Common Stock not subject to a forfeiture condition or the Company’s right of
repurchase) will terminate immediately prior to the completion of such dissolution or liquidation, and the shares of Common Stock subject to the Company’s repurchase rights or subject to a forfeiture condition may be repurchased or reacquired
by the Company notwithstanding the fact that the holder of such Award is providing Continuous Service, provided, however, that the Board may determine to cause some or all Awards to become fully vested, exercisable and/or no longer subject to
repurchase or forfeiture (to the extent such Awards have not previously expired or terminated) before the dissolution or liquidation is completed but contingent on its completion. 

  
 9 

 (c) Corporate Transaction. The following provisions will apply to
Awards in the event of a Corporate Transaction, except as set forth in Section 11, unless otherwise provided in the instrument evidencing the Award or any other written agreement between the Company or any Affiliate and the Participant or
unless otherwise expressly provided by the Board at the time of grant of an Award. 
 (i) Awards May Be Assumed. In the
event of a Corporate Transaction, any surviving corporation or acquiring corporation (or the surviving or acquiring corporation’s parent company) may assume or continue any or all Awards outstanding under the Plan or may substitute similar
awards for Awards outstanding under the Plan (including but not limited to, awards to acquire the same consideration paid to the stockholders of the Company pursuant to the Corporate Transaction), and any reacquisition or repurchase rights held by
the Company in respect of Common Stock issued pursuant to Awards may be assigned by the Company to the successor of the Company (or the successor’s parent company, if any), in connection with such Corporate Transaction. A surviving corporation
or acquiring corporation (or its parent) may choose to assume or continue only a portion of an Award or substitute a similar award for only a portion of an Award, or may choose to assume or continue the Awards held by some, but not all Participants.
The terms of any assumption, continuation or substitution will be set by the Board. 
 (ii) Awards Held by Current
Participants. In the event of a Corporate Transaction in which the surviving corporation or acquiring corporation (or its parent company) does not assume or continue such outstanding Awards or substitute similar awards for such
outstanding Awards, then with respect to Awards that have not been assumed, continued or substituted and that are held by Participants whose Continuous Service has not terminated prior to the effective time of the Corporate Transaction (referred to
as the “Current Participants”), the vesting of such Awards (and, with respect to Options and Stock Appreciation Rights, the time when such Awards may be exercised) will be accelerated in full to a
date prior to the effective time of such Corporate Transaction (contingent upon the effectiveness of the Corporate Transaction) as the Board determines (or, if the Board does not determine such a date, to the date that is five days prior to the
effective time of the Corporate Transaction), and such Awards will terminate if not exercised (if applicable) at or prior to the effective time of the Corporate Transaction, and any reacquisition or repurchase rights held by the Company with respect
to such Awards will lapse (contingent upon the effectiveness of the Corporate Transaction). With respect to the vesting of Performance Awards that will accelerate upon the occurrence of a Corporate Transaction pursuant to this subsection
(ii) and that have multiple vesting levels depending on the level of performance, unless otherwise provided in the Award Agreement, the vesting of such Performance Awards will accelerate at 100% of the target level upon the occurrence of the
Corporate Transaction in which the Awards are not assumed, continued or substituted in accordance with Section 6(c)(i). With respect to the vesting of Awards that will accelerate upon the occurrence of a Corporate Transaction pursuant to this
subsection (ii) and are settled in the form of a cash payment, such cash payment will be made no later than 30 days following the occurrence of the Corporate Transaction or such later date as required to comply with Section 409A of the
Code. 

  
 10 

 (iii) Awards Held by Persons
other than Current Participants. In the event of a Corporate Transaction in which the surviving corporation or acquiring corporation (or its parent company) does not assume or continue such
outstanding Awards or substitute similar awards for such outstanding Awards, then with respect to Awards that have not been assumed, continued or substituted and that are held by persons other than Current Participants, such Awards will terminate if
not exercised (if applicable) prior to the occurrence of the Corporate Transaction; provided, however, that any reacquisition or repurchase rights held by the Company with respect to such Awards will not terminate and may continue to be exercised
notwithstanding the Corporate Transaction. 
 (iv) Payment for Awards in
Lieu of Exercise. Notwithstanding the foregoing, in the event an Award will terminate if not exercised prior to the effective time of a Corporate Transaction, the Board may provide, in its sole
discretion, that the holder of such Award may not exercise such Award but will receive a payment, in such form as may be determined by the Board, equal in value, at the effective time, to the excess, if any, of (1) the value of the property the
Participant would have received upon the exercise of the Award (including, at the discretion of the Board, any unvested portion of such Award), over (2) any exercise price payable by such holder in connection with such exercise. 

(d) Appointment of Stockholder Representative. As a condition to the receipt of an Award under this Plan, a Participant will be
deemed to have agreed that the Award will be subject to the terms of any agreement governing a Corporate Transaction involving the Company, including, without limitation, a provision for the appointment of a stockholder representative that is
authorized to act on the Participant’s behalf with respect to any escrow, indemnities and any contingent consideration. 
 (e)
No Restriction on Right to Undertake Transactions. The grant of any Award under the Plan and the issuance of shares pursuant to any Award does not affect or restrict in any way the right or power of the Company or the stockholders of
the Company to make or authorize any adjustment, recapitalization, reorganization or other change in the Company’s capital structure or its business, any merger or consolidation of the Company, any issue of stock or of options, rights or
options to purchase stock or of bonds, debentures, preferred or prior preference stocks whose rights are superior to or affect the Common Stock or the rights thereof or which are convertible into or exchangeable for Common Stock, or the dissolution
or liquidation of the Company, or any sale or transfer of all or any part of its assets or business, or any other corporate act or proceeding, whether of a similar character or otherwise. 

 

	7.	 ADMINISTRATION. 

(a) Administration by Board. The Board will administer the Plan unless and until the Board delegates administration of the
Plan to a Committee or Committees, as provided in subsection (c) below. 
 (b) Powers of Board. The Board will have
the power, subject to, and within the limitations of, the express provisions of the Plan: 
 (i) To determine from time to time
(1) which of the persons eligible under the Plan will be granted Awards; (2) when and how each Award will be granted; (3) what type or combination of types of Award will be granted; (4) the provisions of each Award granted (which
need not be identical), including the time or times when a person will be permitted to receive an 

  
 11 

 
issuance of Common Stock or other payment pursuant to an Award; (5) the number of shares of Common Stock or cash equivalent with respect to which an Award will be granted to each such
person; (6) the Fair Market Value applicable to an Award; and (7) the terms of any Performance Award that is not valued in whole or in part by reference to, or otherwise based on, the Common Stock, including the amount of cash payment or
other property that may be earned and the timing of payment. 
 (ii) To construe and interpret the Plan and Awards granted under it,
and to establish, amend and revoke rules and regulations for its administration. The Board, in the exercise of this power, may correct any defect, omission or inconsistency in the Plan or in any Award Agreement, in a manner and to the extent it
deems necessary or expedient to make the Plan or Award fully effective. 
 (iii) To settle all controversies regarding the Plan
and Awards granted under it. 
 (iv) To accelerate the time at which an Award may first be exercised or the time during which an Award
or any part thereof will vest, notwithstanding the provisions in the Award Agreement stating the time at which it may first be exercised or the time during which it will vest. 

(v) To prohibit the exercise of any Option, SAR or other exercisable Award during a period of up to 30 days prior to the consummation of
any pending stock dividend, stock split, combination or exchange of shares, merger, consolidation or other distribution (other than normal cash dividends) of Company assets to stockholders, or any other change affecting the shares of Common Stock or
the share price of the Common Stock including any Corporate Transaction, for reasons of administrative convenience. 
 (vi) To suspend
or terminate the Plan at any time. Suspension or termination of the Plan will not Materially Impair rights and obligations under any Award granted while the Plan is in effect except with the written consent of the affected Participant. 

(vii) To amend the Plan in any respect the Board deems necessary or advisable; provided, however, that stockholder approval will
be required for any amendment to the extent required by Applicable Law. Except as provided above, rights under any Award granted before amendment of the Plan will not be Materially Impaired by any amendment of the Plan unless (1) the Company
requests the consent of the affected Participant, and (2) such Participant consents in writing. 
 (viii) To submit any
amendment to the Plan for stockholder approval. 
 (ix) To approve forms of Award Agreements for use under the Plan and to amend the
terms of any one or more Awards, including, but not limited to, amendments to provide terms more favorable to the Participant than previously provided in the Award Agreement, subject to any specified limits in the Plan that are not subject to Board
discretion; provided however, that, a Participant’s rights under any Award will not be Materially Impaired by any such amendment unless (1) the Company requests the consent of the affected Participant, and
(2) such Participant consents in writing. 

  
 12 

 (x) Generally, to exercise such powers and to perform such acts as the Board deems
necessary or expedient to promote the best interests of the Company and that are not in conflict with the provisions of the Plan or Awards. 

(xi) To adopt such procedures and sub-plans as are necessary or appropriate to permit and
facilitate participation in the Plan by, or take advantage of specific tax treatment for Awards granted to, Employees, Directors or Consultants who are foreign nationals or employed outside the United States (provided that Board approval will not be
necessary for immaterial modifications to the Plan or any Award Agreement to ensure or facilitate compliance with the laws of the relevant foreign jurisdiction). 

(xii) To effect, at any time and from time to time, subject to the consent of any Participant whose Award is Materially Impaired by such
action, (1) the reduction of the exercise price (or strike price) of any outstanding Option or SAR; (2) the cancellation of any outstanding Option or SAR and the grant in substitution therefor of (A) a new Option, SAR, Restricted
Stock Award, RSU Award or Other Award, under the Plan or another equity plan of the Company, covering the same or a different number of shares of Common Stock, (B) cash and/or (C) other valuable consideration (as determined by the Board);
or (3) any other action that is treated as a repricing under generally accepted accounting principles. 
 (c) Delegation to
Committee. 
 (i) General. The Board may delegate some or all of the administration of the Plan to a Committee or
Committees. If administration of the Plan is delegated to a Committee, the Committee will have, in connection with the administration of the Plan, the powers theretofore possessed by the Board that have been delegated to the Committee, including the
power to delegate to another Committee or a subcommittee of the Committee any of the administrative powers the Committee is authorized to exercise (and references in this Plan to the Board will thereafter be to the Committee or subcommittee),
subject, however, to such resolutions, not inconsistent with the provisions of the Plan, as may be adopted from time to time by the Board. Each Committee may retain the authority to concurrently administer the Plan with Committee or subcommittee to
which it has delegated its authority hereunder and may, at any time, revest in such Committee some or all of the powers previously delegated. The Board may retain the authority to concurrently administer the Plan with any Committee and may, at any
time, revest in the Board some or all of the powers previously delegated. 
 (ii) Rule
16b-3 Compliance. To the extent an Award is intended to qualify for the exemption from Section 16(b) of the Exchange Act that is available under Rule
16b-3 of the Exchange Act, the Award will be granted by the Board or a Committee that consists solely of two or more Non-Employee Directors, as determined under Rule 16b-3(b)(3) of the Exchange Act and thereafter any action establishing or modifying the terms of the Award will be approved by the Board or a Committee meeting such requirements to the extent necessary for such
exemption to remain available. 
 (d) Effect of Board’s Decision. All determinations, interpretations
and constructions made by the Board or any Committee in good faith will not be subject to review by any person and will be final, binding and conclusive on all persons. 

  
 13 

 (e) Delegation to an Officer. The Board or any Committee may delegate
to one or more Officers the authority to do one or both of the following (i) designate Employees who are not Officers to be recipients of Options and SARs (and, to the extent permitted by Applicable Law, other types of Awards) and, to the
extent permitted by Applicable Law, the terms thereof, and (ii) determine the number of shares of Common Stock to be subject to such Awards granted to such Employees; provided, however, that the resolutions or charter adopted by the Board or
any Committee evidencing such delegation will specify the total number of shares of Common Stock that may be subject to the Awards granted by such Officer and that such Officer may not grant an Award to himself or herself. Any such Awards will be
granted on the applicable form of Award Agreement most recently approved for use by the Board or the Committee, unless otherwise provided in the resolutions approving the delegation authority. Notwithstanding anything to the contrary herein, neither
the Board nor any Committee may delegate to an Officer who is acting solely in the capacity of an Officer (and not also as a Director) the authority to determine the Fair Market Value. 

 

	8.	 TAX WITHHOLDING 

(a) Withholding Authorization. As a condition to acceptance of any Award under the Plan, a Participant authorizes
withholding from payroll and any other amounts payable to such Participant, and otherwise agrees to make adequate provision for (including), any sums required to satisfy any U.S. federal, state, local and/or foreign tax or social insurance
contribution withholding obligations of the Company or an Affiliate, if any, which arise in connection with the exercise, vesting or settlement of such Award, as applicable. Accordingly, a Participant may not be able to exercise an Award even though
the Award is vested, and the Company shall have no obligation to issue shares of Common Stock subject to an Award, unless and until such obligations are satisfied. 

(b) Satisfaction of Withholding Obligation. To the extent permitted by the terms of an Award Agreement, the Company may,
in its sole discretion, satisfy any U.S. federal, state, local and/or foreign tax or social insurance withholding obligation relating to an Award by any of the following means or by a combination of such means: (i) causing the Participant to
tender a cash payment; (ii) withholding shares of Common Stock from the shares of Common Stock issued or otherwise issuable to the Participant in connection with the Award; (iii) withholding cash from an Award settled in cash;
(iv) withholding payment from any amounts otherwise payable to the Participant; (v) by allowing a Participant to effectuate a “cashless exercise” pursuant to a program developed under Regulation T as promulgated by the Federal
Reserve Board; or (vi) by such other method as may be set forth in the Award Agreement. 
 (c) No Obligation to Notify or
Minimize Taxes; No Liability to Claims. Except as required by Applicable Law the Company has no duty or obligation to any Participant to advise such holder as to the time or manner of exercising such Award. Furthermore, the Company has no
duty or obligation to warn or otherwise advise such holder of a pending termination or expiration of an Award or a possible period in which the Award may not be exercised. The Company has no duty or obligation to minimize the tax consequences of an
Award to the holder of such Award and will not be liable to any holder of an Award for any adverse tax consequences to such holder in connection with an Award. As a condition to accepting an Award under the Plan, each Participant (i) agrees to
not make any claim against the Company, or any of its Officers, 

  
 14 

 
Directors, Employees or Affiliates related to tax liabilities arising from such Award or other Company compensation and (ii) acknowledges that such Participant was advised to consult with
his or her own personal tax, financial and other legal advisors regarding the tax consequences of the Award and has either done so or knowingly and voluntarily declined to do so. Additionally, each Participant acknowledges any Option or SAR granted
under the Plan is exempt from Section 409A only if the exercise or strike price is at least equal to the “fair market value” of the Common Stock on the date of grant as determined by the Internal Revenue Service and there is no other
impermissible deferral of compensation associated with the Award. Additionally, as a condition to accepting an Option or SAR granted under the Plan, each Participant agrees not make any claim against the Company, or any of its Officers, Directors,
Employees or Affiliates in the event that the Internal Revenue Service asserts that such exercise price or strike price is less than the “fair market value” of the Common Stock on the date of grant as subsequently determined by the
Internal Revenue Service. 
 (d) Withholding Indemnification. As a condition to accepting an Award under the Plan, in
the event that the amount of the Company’s and/or its Affiliate’s withholding obligation in connection with such Award was greater than the amount actually withheld by the Company and/or its Affiliates, each Participant agrees to indemnify
and hold the Company and/or its Affiliates harmless from any failure by the Company and/or its Affiliates to withhold the proper amount. 
  

	9.	 MISCELLANEOUS. 

(a) Source of Shares. The stock issuable under the Plan will be shares of authorized but unissued or reacquired Common
Stock, including shares repurchased by the Company on the open market or otherwise. 
 (b) Use of Proceeds from Sales of Common
Stock. Proceeds from the sale of shares of Common Stock pursuant to Awards will constitute general funds of the Company. 
 (c)
Corporate Action Constituting Grant of Awards. Corporate action constituting a grant by the Company of an Award to any Participant will be deemed completed as of the date of such corporate action, unless otherwise determined by the Board,
regardless of when the instrument, certificate, or letter evidencing the Award is communicated to, or actually received or accepted by, the Participant. In the event that the corporate records (e.g., Board consents, resolutions or minutes)
documenting the corporate action approving the grant contain terms (e.g., exercise price, vesting schedule or number of shares) that are inconsistent with those in the Award Agreement or related grant documents as a result of a clerical error in the
Award Agreement or related grant documents, the corporate records will control and the Participant will have no legally binding right to the incorrect term in the Award Agreement or related grant documents. 

(d) Stockholder Rights. No Participant will be deemed to be the holder of, or to have any of the rights of a holder with respect
to, any shares of Common Stock subject to such Award unless and until (i) such Participant has satisfied all requirements for exercise of the Award pursuant to its terms, if applicable, and (ii) the issuance of the Common Stock subject to
such Award is reflected in the records of the Company. 

  
 15 

 (e) No Employment or Other Service Rights. Nothing in the Plan, any Award
Agreement or any other instrument executed thereunder or in connection with any Award granted pursuant thereto will confer upon any Participant any right to continue to serve the Company or an Affiliate in the capacity in effect at the time the
Award was granted or affect the right of the Company or an Affiliate to terminate at will and without regard to any future vesting opportunity that a Participant may have with respect to any Award (i) the employment of an Employee with or
without notice and with or without cause, (ii) the service of a Consultant pursuant to the terms of such Consultant’s agreement with the Company or an Affiliate, or (iii) the service of a Director pursuant to the Bylaws of the Company
or an Affiliate, and any applicable provisions of the corporate law of the state or foreign jurisdiction in which the Company or the Affiliate is incorporated, as the case may be. Further, nothing in the Plan, any Award Agreement or any other
instrument executed thereunder or in connection with any Award will constitute any promise or commitment by the Company or an Affiliate regarding the fact or nature of future positions, future work assignments, future compensation or any other term
or condition of employment or service or confer any right or benefit under the Award or the Plan unless such right or benefit has specifically accrued under the terms of the Award Agreement and/or Plan. 

(f) Change in Time Commitment. In the event a Participant’s regular level of time commitment in the performance of
his or her services for the Company and any Affiliates is reduced (for example, and without limitation, if the Participant is an Employee of the Company and the Employee has a change in status from a full-time Employee to a part-time Employee or
takes an extended leave of absence) after the date of grant of any Award to the Participant, the Board may determine, to the extent permitted by Applicable Law, to (i) make a corresponding reduction in the number of shares or cash amount
subject to any portion of such Award that is scheduled to vest or become payable after the date of such change in time commitment, and (ii) in lieu of or in combination with such a reduction, extend the vesting or payment schedule applicable to
such Award. In the event of any such reduction, the Participant will have no right with respect to any portion of the Award that is so reduced or extended. 

(g) Execution of Additional Documents. As a condition to accepting an Award
under the Plan, the Participant agrees to execute any additional documents or instruments necessary or desirable, as determined in the Plan Administrator’s sole discretion, to carry out the purposes or intent of the Award, or facilitate
compliance with securities and/or other regulatory requirements, in each case at the Plan Administrator’s request. 
 (h)
Electronic Delivery and Participation. Any reference herein or in an Award Agreement to a “written” agreement or document will include any agreement or document delivered electronically, filed publicly at www.sec.gov (or any
successor website thereto) or posted on the Company’s intranet (or other shared electronic medium controlled by the Company to which the Participant has access). By accepting any Award the Participant consents to receive documents by electronic
delivery and to participate in the Plan through any on-line electronic system established and maintained by the Plan Administrator or another third party selected by the Plan Administrator. The form of
delivery of any Common Stock (e.g., a stock certificate or electronic entry evidencing such shares) shall be determined by the Company. 

  
 16 

 (i) Clawback/Recovery. All Awards granted under the Plan will be
subject to recoupment in accordance with any clawback policy that the Company is required to adopt pursuant to the listing standards of any national securities exchange or association on which the Company’s securities are listed or as is
otherwise required by the Dodd-Frank Wall Street Reform and Consumer Protection Act or other Applicable Law and any clawback policy that the Company otherwise adopts, to the extent applicable and permissible under Applicable Law. In addition, the
Board may impose such other clawback, recovery or recoupment provisions in an Award Agreement as the Board determines necessary or appropriate, including but not limited to a reacquisition right in respect of previously acquired shares of Common
Stock or other cash or property upon the occurrence of Cause. No recovery of compensation under such a clawback policy will be an event giving rise to a Participant’s right to voluntarily terminate employment upon a “resignation for good
reason,” or for a “constructive termination” or any similar term under any plan of or agreement with the Company. 

(j) Securities Law Compliance. A Participant will not be issued any shares in respect of an
Award unless either (i) the shares are registered under the Securities Act; or (ii) the Company has determined that such issuance would be exempt from the registration requirements of the Securities Act. Each Award also must comply with
other Applicable Law governing the Award, and a Participant will not receive such shares if the Company determines that such receipt would not be in material compliance with Applicable Law. 

(k) Transfer or Assignment of Awards; Issued
Shares. Except as expressly provided in the Plan or the form of Award Agreement, Awards granted under the Plan may not be transferred or assigned by the Participant. After the vested shares subject to an Award have been issued, or
in the case of Restricted Stock and similar awards, after the issued shares have vested, the holder of such shares is free to assign, hypothecate, donate, encumber or otherwise dispose of any interest in such shares provided that any such actions
are in compliance with the provisions herein, the terms of the Trading Policy and Applicable Law. 
 (l) Effect
on Other Employee Benefit Plans. The value of any Award granted under the Plan, as determined upon grant, vesting or settlement, shall not be included as compensation,
earnings, salaries, or other similar terms used when calculating any Participant’s benefits under any employee benefit plan sponsored by the Company or any Affiliate, except as such plan otherwise expressly provides. The Company expressly
reserves its rights to amend, modify, or terminate any of the Company’s or any Affiliate’s employee benefit plans. 
 (m)
Deferrals. To the extent permitted by Applicable Law, the Board, in its sole discretion, may determine that the delivery of Common Stock or the payment of cash, upon the exercise, vesting or settlement of all or a portion of any Award
may be deferred and may also establish programs and procedures for deferral elections to be made by Participants. Deferrals will be made in accordance with the requirements of Section 409A. 

(n) Section 409A. Unless otherwise expressly provided for in an Award Agreement, the Plan and Award Agreements will be
interpreted to the greatest extent possible in a manner that makes the Plan and the Awards granted hereunder exempt from Section 409A, and, to the extent not so exempt, in compliance with the requirements of Section 409A. If the Board
determines that any Award granted hereunder is not exempt from and is therefore subject to Section 409A, the Award Agreement evidencing such Award will incorporate the terms and conditions necessary to avoid the consequences specified in
Section 409A(a)(1) of the Code, and to the extent an Award 

  
 17 

 
Agreement is silent on terms necessary for compliance, such terms are hereby incorporated by reference into the Award Agreement. Notwithstanding anything to the contrary in this Plan (and unless
the Award Agreement specifically provides otherwise), if the shares of Common Stock are publicly traded, and if a Participant holding an Award that constitutes “deferred compensation” under Section 409A is a “specified
employee” for purposes of Section 409A, no distribution or payment of any amount that is due because of a “separation from service” (as defined in Section 409A without regard to alternative definitions thereunder) will be
issued or paid before the date that is six months and one day following the date of such Participant’s “separation from service” or, if earlier, the date of the Participant’s death, unless such distribution or payment can be made
in a manner that complies with Section 409A, and any amounts so deferred will be paid in a lump sum on the day after such six month period elapses, with the balance paid thereafter on the original schedule. 

(o) CHOICE OF LAW. This Plan and any controversy
arising out of or relating to this Plan shall be governed by, and construed in accordance with, the internal laws of the State of Delaware, without regard to conflict of law principles that would result in any application of any law other than the
law of the State of Delaware. 
  

	10.	 COVENANTS OF THE COMPANY.

 The Company will seek to obtain from each regulatory commission or agency, as may be deemed to be necessary, having
jurisdiction over the Plan such authority as may be required to grant Awards and to issue and sell shares of Common Stock upon exercise or vesting of the Awards; provided, however, that this undertaking will not require the Company to register under
the Securities Act the Plan, any Award or any Common Stock issued or issuable pursuant to any such Award. If, after reasonable efforts and at a reasonable cost, the Company is unable to obtain from any such regulatory commission or agency the
authority that counsel for the Company deems necessary or advisable for the lawful issuance and sale of Common Stock under the Plan, the Company will be relieved from any liability for failure to issue and sell Common Stock upon exercise or vesting
of such Awards unless and until such authority is obtained. A Participant is not eligible for the grant of an Award or the subsequent issuance of Common Stock pursuant to the Award if such grant or issuance would be in violation of any Applicable
Law. 
  

	11.	 ADDITIONAL RULES FOR AWARDS
SUBJECT TO SECTION 409A. 

 (a)
Application. Unless the provisions of this Section of the Plan are expressly superseded by the provisions in the form of Award Agreement, the provisions of this Section shall apply and shall supersede anything to the contrary set forth
in the Award Agreement for a Non- Exempt Award. 
 (b) Non-Exempt Awards Subject to Non-Exempt Severance Arrangements. To the extent a Non-Exempt Award is subject to Section 409A due to application of a
Non-Exempt Severance Arrangement, the following provisions of this subsection (b) apply. 

(i) If the Non-Exempt Award vests in the ordinary course during the Participant’s
Continuous Service in accordance with the vesting schedule set forth in the Award Agreement, and does not accelerate vesting under the terms of a Non-Exempt Severance Arrangement, in no event will the shares
be issued in respect of such Non-Exempt Award any later than the later of: (i) December 31st of the calendar year that includes the applicable vesting
date, or (ii) the 60th day that follows the applicable vesting date. 

  
 18 

 (ii) If vesting of the Non-Exempt Award
accelerates under the terms of a Non- Exempt Severance Arrangement in connection with the Participant’s Separation from Service, and such vesting acceleration provisions were in effect as of the date of grant of the Non-Exempt Award and, therefore, are part of the terms of such Non-Exempt Award as of the date of grant, then the shares will be earlier issued in settlement of such Non-Exempt Award upon the Participant’s Separation from Service in accordance with the terms of the Non-Exempt Severance Arrangement, but in no event later than the 60th day that follows the date of the Participant’s Separation from Service. However, if at the time the shares would otherwise be issued the Participant is subject to the distribution limitations
contained in Section 409A applicable to “specified employees,” as defined in Section 409A(a)(2)(B)(i) of the Code, such shares shall not be issued before the date that is six months following the date of such Participant’s
Separation from Service, or, if earlier, the date of the Participant’s death that occurs within such six month period. 
 (iii)
If vesting of a Non-Exempt Award accelerates under the terms of a Non- Exempt Severance Arrangement in connection with a Participant’s Separation from Service, and such vesting acceleration provisions
were not in effect as of the date of grant of the Non-Exempt Award and, therefore, are not a part of the terms of such Non-Exempt Award on the date of grant, then such
acceleration of vesting of the Non-Exempt Award shall not accelerate the issuance date of the shares, but the shares shall instead be issued on the same schedule as set forth in the Grant Notice as if they had
vested in the ordinary course during the Participant’s Continuous Service, notwithstanding the vesting acceleration of the Non-Exempt Award. Such issuance schedule is intended to satisfy the requirements
of payment on a specified date or pursuant to a fixed schedule, as provided under Treasury Regulations Section 1.409A-3(a)(4). 

(c) Treatment of Non-Exempt Awards
Upon a Corporate Transaction for Employees and Consultants. The provisions of this subsection (c) shall apply and shall
supersede anything to the contrary set forth in the Plan with respect to the permitted treatment of any Non- Exempt Award in connection with a Corporate Transaction if the Participant was either an Employee or Consultant upon the applicable date of
grant of the Non-Exempt Award. 
 (i) Vested
Non-Exempt Awards. The following provisions shall apply to any Vested Non-Exempt Award in connection with a Corporate Transaction: 

(1) If the Corporate Transaction is also a Section 409A Change in Control then the Acquiring Entity may not assume, continue or
substitute the Vested Non-Exempt Award. Upon the Section 409A Change in Control the settlement of the Vested Non-Exempt Award will automatically be accelerated and
the shares will be immediately issued in respect of the Vested Non-Exempt Award. Alternatively, the Company may instead provide that the Participant will receive a cash settlement equal to the Fair Market
Value of the shares that would otherwise be issued to the Participant upon the Section 409A Change in Control. 

  
 19 

 (2) If the Corporate Transaction is not also a Section 409A Change in Control,
then the Acquiring Entity must either assume, continue or substitute each Vested Non- Exempt Award. The shares to be issued in respect of the Vested Non-Exempt Award shall be issued to the Participant by the
Acquiring Entity on the same schedule that the shares would have been issued to the Participant if the Corporate Transaction had not occurred. In the Acquiring Entity’s discretion, in lieu of an issuance of shares, the Acquiring Entity may
instead substitute a cash payment on each applicable issuance date, equal to the Fair Market Value of the shares that would otherwise be issued to the Participant on such issuance dates, with the determination of the Fair Market Value of the shares
made on the date of the Corporate Transaction. 
 (ii) Unvested Non-Exempt Awards. The
following provisions shall apply to any Unvested Non-Exempt Award unless otherwise determined by the Board pursuant to subsection (e) of this Section. 

(1) In the event of a Corporate Transaction, the Acquiring Entity shall assume, continue or substitute any Unvested Non-Exempt Award. Unless otherwise determined by the Board, any Unvested Non-Exempt Award will remain subject to the same vesting and forfeiture restrictions that were
applicable to the Award prior to the Corporate Transaction. The shares to be issued in respect of any Unvested Non-Exempt Award shall be issued to the Participant by the Acquiring Entity on the same schedule
that the shares would have been issued to the Participant if the Corporate Transaction had not occurred. In the Acquiring Entity’s discretion, in lieu of an issuance of shares, the Acquiring Entity may instead substitute a cash payment on each
applicable issuance date, equal to the Fair Market Value of the shares that would otherwise be issued to the Participant on such issuance dates, with the determination of Fair Market Value of the shares made on the date of the Corporate Transaction.

 (2) If the Acquiring Entity will not assume, substitute or continue any Unvested
Non-Exempt Award in connection with a Corporate Transaction, then such Award shall automatically terminate and be forfeited upon the Corporate Transaction with no consideration payable to any Participant in
respect of such forfeited Unvested Non-Exempt Award. Notwithstanding the foregoing, to the extent permitted and in compliance with the requirements of Section 409A, the Board may in its discretion
determine to elect to accelerate the vesting and settlement of the Unvested Non-Exempt Award upon the Corporate Transaction, or instead substitute a cash payment equal to the Fair Market Value of such shares
that would otherwise be issued to the Participant, as further provided in subsection (e)(ii) below. In the absence of such discretionary election by the Board, any Unvested Non-Exempt Award shall be forfeited
without payment of any consideration to the affected Participants if the Acquiring Entity will not assume, substitute or continue the Unvested Non-Exempt Awards in connection with the Corporate Transaction.

 (3) The foregoing treatment shall apply with respect to all Unvested Non-Exempt Awards
upon any Corporate Transaction, and regardless of whether or not such Corporate Transaction is also a Section 409A Change in Control. 

(d) Treatment of Non-Exempt Awards
Upon a Corporate Transaction for Non- Employee Directors. The following provisions of this subsection (d) shall apply and shall
supersede anything to the contrary that may be set forth in the Plan with respect to the permitted treatment of a Non-Exempt Director Award in connection with a Corporate Transaction. 

  
 20 

 (i) If the Corporate Transaction is also a Section 409A Change in Control then
the Acquiring Entity may not assume, continue or substitute the Non-Exempt Director Award. Upon the Section 409A Change in Control the vesting and settlement of any
Non-Exempt Director Award will automatically be accelerated and the shares will be immediately issued to the Participant in respect of the Non-Exempt Director Award.
Alternatively, the Company may provide that the Participant will instead receive a cash settlement equal to the Fair Market Value of the shares that would otherwise be issued to the Participant upon the Section 409A Change in Control pursuant
to the preceding provision. 
 (ii) If the Corporate Transaction is not also a Section 409A Change in Control, then the Acquiring
Entity must either assume, continue or substitute the Non-Exempt Director Award. Unless otherwise determined by the Board, the Non-Exempt Director Award will remain
subject to the same vesting and forfeiture restrictions that were applicable to the Award prior to the Corporate Transaction. The shares to be issued in respect of the Non-Exempt Director Award shall be issued
to the Participant by the Acquiring Entity on the same schedule that the shares would have been issued to the Participant if the Corporate Transaction had not occurred. In the Acquiring Entity’s discretion, in lieu of an issuance of shares, the
Acquiring Entity may instead substitute a cash payment on each applicable issuance date, equal to the Fair Market Value of the shares that would otherwise be issued to the Participant on such issuance dates, with the determination of Fair Market
Value made on the date of the Corporate Transaction. 
 (e) If the RSU Award is a Non-Exempt
Award, then the provisions in this Section 11(e) shall apply and supersede anything to the contrary that may be set forth in the Plan or the Award Agreement with respect to the permitted treatment of such
Non-Exempt Award: 
 (i) Any exercise by the Board of discretion to accelerate the vesting of
a Non- Exempt Award shall not result in any acceleration of the scheduled issuance dates for the shares in respect of the Non-Exempt Award unless earlier issuance of the shares upon the applicable vesting
dates would be in compliance with the requirements of Section 409A. 
 (ii) The Company explicitly reserves the right to earlier
settle any Non-Exempt Award to the extent permitted and in compliance with the requirements of Section 409A, including pursuant to any of the exemptions available in Treasury Regulations
Section 1.409A- 3(j)(4)(ix). 
 (iii) To the extent the terms of any Non-Exempt Award
provide that it will be settled upon a Change in Control or Corporate Transaction, to the extent it is required for compliance with the requirements of Section 409A, the Change in Control or Corporate Transaction event triggering settlement
must also constitute a Section 409A Change in Control. To the extent the terms of a Non-Exempt Award provides that it will be settled upon a termination of employment or termination of Continuous Service,
to the extent it is required for compliance with the requirements of Section 409A, the termination event triggering settlement must also constitute a Separation From Service. However, if at the time the shares would otherwise be issued to a
Participant in connection with a “separation from service” such Participant is subject 

  
 21 

 
to the distribution limitations contained in Section 409A applicable to “specified employees,” as defined in Section 409A(a)(2)(B)(i) of the Code, such shares shall not be
issued before the date that is six months following the date of the Participant’s Separation From Service, or, if earlier, the date of the Participant’s death that occurs within such six month period. 

(iv) The provisions in this subsection (e) for delivery of the shares in respect of the settlement of an RSU Award that is a Non-Exempt Award are intended to comply with the requirements of Section 409A so that the delivery of the shares to the Participant in respect of such Non-Exempt Award
will not trigger the additional tax imposed under Section 409A, and any ambiguities herein will be so interpreted. 
  

	12.	 SEVERABILITY. 

If all or any part of the Plan or any Award Agreement is declared by any court or governmental authority to be unlawful or invalid, such
unlawfulness or invalidity shall not invalidate any portion of the Plan or such Award Agreement not declared to be unlawful or invalid. Any Section of the Plan or any Award Agreement (or part of such a Section) so declared to be unlawful or invalid
shall, if possible, be construed in a manner which will give effect to the terms of such Section or part of a Section to the fullest extent possible while remaining lawful and valid. 

 

	13.	 TERMINATION OF THE PLAN.

 The Board may suspend or terminate the Plan at any time. No Incentive Stock Options may be granted after the tenth
anniversary of the earlier of: (i) the Adoption Date, or (ii) the date the Plan is approved by the Company’s stockholders. No Awards may be granted under the Plan while the Plan is suspended or after it is terminated. 

  
 22 

	14.	 DEFINITIONS. 

As used in the Plan, the following definitions apply to the capitalized terms indicated below: 

(a) “Acquiring Entity” means the surviving or acquiring corporation (or its
parent company) in connection with a Corporate Transaction. 
 (b) “Adoption Date”
means the date the Plan is first approved by the Board or Compensation Committee. 
 (c) “Affiliate” means, at
the time of determination, any “parent” or “subsidiary” of the Company as such terms are defined in Rule 405 promulgated under the Securities Act. The Board may determine the time or times at which “parent” or
“subsidiary” status is determined within the foregoing definition. 
 (d) “Applicable Law” means any
applicable securities, federal, state, foreign, material local or municipal or other law, statute, constitution, principle of common law, resolution, ordinance, code, edict, decree, rule, listing rule, regulation, judicial decision, ruling or
requirement issued, enacted, adopted, promulgated, implemented or otherwise put into effect by or under the authority of any Governmental Body (including under the authority of any applicable self- regulating organization such as the Nasdaq Stock
Market, New York Stock Exchange, or the Financial Industry Regulatory Authority). 
 (e) “Award” means any
right to receive Common Stock, cash or other property granted under the Plan (including an Incentive Stock Option, a Nonstatutory Stock Option, a Restricted Stock Award, an RSU Award, a SAR, a Performance Award or any Other Award). 

(f) “Award Agreement” means a written or electronic agreement between the Company
and a Participant evidencing the terms and conditions of an Award. The Award Agreement generally consists of the Grant Notice and the agreement containing the written summary of the general terms and conditions applicable to the Award and which is
provided, including through electronic means, to a Participant along with the Grant Notice. 
 (g) “Board”
means the Board of Directors of the Company (or its designee). Any decision or determination made by the Board shall be a decision or determination that is made in the sole discretion of the Board (or its designee), and such decision or
determination shall be final and binding on all Participants. 
 (h) “Capitalization Adjustment” means
any change that is made in, or other events that occur with respect to, the Common Stock subject to the Plan or subject to any Award after the date the Plan is adopted by the Board without the receipt of consideration by the Company through merger,
consolidation, reorganization, recapitalization, reincorporation, stock dividend, dividend in property other than cash, large nonrecurring cash dividend, stock split, reverse stock split, liquidating dividend, combination of shares, exchange of
shares, change in corporate structure or any similar equity restructuring transaction, as that term is used in Statement of Financial Accounting Standards Board Accounting Standards Codification Topic 718 (or any successor thereto). Notwithstanding
the foregoing, the conversion of any convertible securities of the Company will not be treated as a Capitalization Adjustment. 

  
 23 

 (i) “Cause” has the meaning ascribed to such term in any written
agreement between a Participant and the Company defining such term and, in the absence of such agreement, such term means, with respect to a Participant, the occurrence of any of the following events: (i) the Participant’s dishonest
statements or acts with respect to the Company or any Affiliate of the Company, or any current or prospective customers, suppliers, vendors or other third parties with which such entity does business; (ii) the Participant’s commission of
(A) a felony or (B) any misdemeanor involving moral turpitude, deceit, dishonesty or fraud; (iii) the Participant’s failure to perform the Participant’s assigned duties and responsibilities to the reasonable satisfaction of
the Company which failure continues, in the reasonable judgment of the Company, after written notice given to the Participant by the Company; (iv) the Participant’s gross negligence, willful misconduct or insubordination with respect to
the Company or any Affiliate of the Company; or (v) the Participant’s material violation of any provision of any agreement(s) between the Participant and the Company relating to noncompetition, nonsolicitation, nondisclosure and/or assignment
of inventions. The determination that a termination of the Participant’s Continuous Service is either for Cause or without Cause will be made by the Board with respect to Participants who are executive officers of the Company and by the
Company’s Chief Executive Officer with respect to Participants who are not executive officers of the Company. Any determination by the Company that the Continuous Service of a Participant was terminated with or without Cause for the purposes of
outstanding Awards held by such Participant will have no effect upon any determination of the rights or obligations of the Company or such Participant for any other purpose. 

(j) “Change in Control” or “Change of Control” means the occurrence, in a single
transaction or in a series of related transactions, of any one or more of the following events: 
 (i) any Exchange Act Person becomes
the Owner, directly or indirectly, of securities of the Company representing more than 50% of the combined voting power of the Company’s then outstanding securities other than by virtue of a merger, consolidation or similar transaction.
Notwithstanding the foregoing, a Change in Control shall not be deemed to occur (A) on account of the acquisition of securities of the Company directly from the Company, (B) on account of the acquisition of securities of the Company by an
investor, any affiliate thereof or any other Exchange Act Person that acquires the Company’s securities in a transaction or series of related transactions the primary purpose of which is to obtain financing for the Company through the issuance
of equity securities, or (C) solely because the level of Ownership held by any Exchange Act Person (the “Subject Person”) exceeds the designated percentage threshold of the outstanding voting securities as a
result of a repurchase or other acquisition of voting securities by the Company reducing the number of shares outstanding, provided that if a Change in Control would occur (but for the operation of this sentence) as a result of the acquisition of
voting securities by the Company, and after such share acquisition, the Subject Person becomes the Owner of any additional voting securities that, assuming the repurchase or other acquisition had not occurred, increases the percentage of the then
outstanding voting securities Owned by the Subject Person over the designated percentage threshold, then a Change in Control shall be deemed to occur; 

  
 24 

 (ii) there is consummated a merger, consolidation or similar transaction involving
(directly or indirectly) the Company and, immediately after the consummation of such merger, consolidation or similar transaction, the stockholders of the Company immediately prior thereto do not Own, directly or indirectly, either
(A) outstanding voting securities representing more than 50% of the combined outstanding voting power of the Acquiring Entity in such merger, consolidation or similar transaction or (B) more than 50% of the combined outstanding voting
power of the parent of the Acquiring Entity in such merger, consolidation or similar transaction, in each case in substantially the same proportions as their Ownership of the outstanding voting securities of the Company immediately prior to such
transaction; 
 (iii) there is consummated a sale, lease, exclusive license or other disposition of all or substantially all of the
consolidated assets of the Company and its Subsidiaries, other than a sale, lease, license or other disposition of all or substantially all of the consolidated assets of the Company and its Subsidiaries to an Entity, more than 50% of the combined
voting power of the voting securities of which are Owned by stockholders of the Company in substantially the same proportions as their Ownership of the outstanding voting securities of the Company immediately prior to such sale, lease, license or
other disposition; or 
 (iv) individuals who, on the date the Plan is adopted by the Board, are members of the Board (the
“Incumbent Board”) cease for any reason to constitute at least a majority of the members of the Board; provided, however, that if the appointment or election (or nomination for election) of any new
Board member was approved or recommended by a majority vote of the members of the Incumbent Board then still in office, such new member shall, for purposes of this Plan, be considered as a member of the Incumbent Board. 

Notwithstanding the foregoing or any other provision of this Plan, (A) the term Change in Control shall not include a sale of assets,
merger or other transaction effected exclusively for the purpose of changing the domicile of the Company, (B) the definition of Change in Control (or any analogous term) in an individual written agreement between the Company or any Affiliate
and the Participant shall supersede the foregoing definition with respect to Awards subject to such agreement; provided, however, that if no definition of Change in Control or any analogous term is set forth in such an individual written agreement,
the foregoing definition shall apply, and (C) with respect to any nonqualified deferred compensation that becomes payable on account of the Change in Control, the transaction or event described in clause (i), (ii), (iii), or (iv) also
constitutes a Section 409A Change in Control if required in order for the payment not to violate Section 409A of the Code. 

(k) “Code” means the Internal Revenue Code of 1986, as amended, including any applicable regulations and
guidance thereunder. 
 (l) “Committee” means the Compensation Committee and any other committee of one or
more Directors to whom authority has been delegated by the Board or Compensation Committee in accordance with the Plan. 
 (m)
“Common Stock” means the common stock of the Company. 
 (n)
“Company” means Adagio Therapeutics, Inc., a Delaware corporation. 

  
 25 

 (o) “Compensation Committee” means the Compensation Committee
of the Board. 
 (p) “Consultant” means any person, including an advisor, who is (i) engaged by the
Company or an Affiliate to render consulting or advisory services and is compensated for such services, or (ii) serving as a member of the board of directors of an Affiliate and is compensated for such services. However, service solely as a
Director, or payment of a fee for such service, will not cause a Director to be considered a “Consultant” for purposes of the Plan. Notwithstanding the foregoing, a person is treated as a Consultant under this Plan only if a Form S-8 Registration Statement under the Securities Act is available to register either the offer or the sale of the Company’s securities to such person. 

(q) “Continuous Service” means that the Participant’s service with the Company
or an Affiliate, whether as an Employee, Director or Consultant, is not interrupted or terminated. A change in the capacity in which the Participant renders service to the Company or an Affiliate as an Employee, Director or Consultant or a change in
the Entity for which the Participant renders such service, provided that there is no interruption or termination of the Participant’s service with the Company or an Affiliate, will not terminate a Participant’s Continuous Service;
provided, however, that if the Entity for which a Participant is rendering services ceases to qualify as an Affiliate, as determined by the Board, such Participant’s Continuous Service will be considered to have terminated on the date
such Entity ceases to qualify as an Affiliate. For example, a change in status from an Employee of the Company to a Consultant of an Affiliate or to a Director will not constitute an interruption of Continuous Service. To the extent permitted by
law, the Board or the chief executive officer of the Company, in that party’s sole discretion, may determine whether Continuous Service will be considered interrupted in the case of (i) any leave of absence approved by the Board or chief
executive officer, including sick leave, military leave or any other personal leave, or (ii) transfers between the Company, an Affiliate, or their successors. Notwithstanding the foregoing, a leave of absence will be treated as Continuous
Service for purposes of vesting in an Award only to such extent as may be provided in the Company’s leave of absence policy, in the written terms of any leave of absence agreement or policy applicable to the Participant, or as otherwise
required by law. In addition, to the extent required for exemption from or compliance with Section 409A, the determination of whether there has been a termination of Continuous Service will be made, and such term will be construed, in a manner
that is consistent with the definition of “separation from service” as defined under Treasury Regulation Section 1.409A-1(h) (without regard to any alternative definition thereunder). 

(r) “Corporate Transaction” means the consummation, in a single transaction or in a series of related
transactions, of any one or more of the following events: 
 (i) a sale or other disposition of all or substantially all, as
determined by the Board, of the consolidated assets of the Company and its Subsidiaries; 
 (ii) a sale or other disposition of at
least 50% of the outstanding securities of the Company; 
 (iii) a merger, consolidation or similar transaction following which the
Company is not the surviving corporation; or 

  
 26 

 (iv) a merger, consolidation or similar transaction following which the Company is
the surviving corporation but the shares of Common Stock outstanding immediately preceding the merger, consolidation or similar transaction are converted or exchanged by virtue of the merger, consolidation or similar transaction into other property,
whether in the form of securities, cash or otherwise. 
 Notwithstanding the foregoing or any other provision of this Plan, (A) the
term Corporate Transaction shall not include a sale of assets, merger or other transaction effected exclusively for the purpose of changing the domicile of the Company, (B) the definition of Corporate Transaction (or any analogous term) in an
individual written agreement between the Company or any Affiliate and the Participant shall supersede the foregoing definition with respect to Awards subject to such agreement; provided, however, that if no definition of Corporate Transaction or any
analogous term is set forth in such an individual written agreement, the foregoing definition shall apply, and (C) with respect to any nonqualified deferred compensation that becomes payable on account of the Corporate Transaction, the transaction
or event described in clause (i), (ii), (iii), or (iv) also constitutes a Section 409A Change in Control if required in order for the payment not to violate Section 409A of the Code. 

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

(t) “determine” or “determined” means as determined by the Board or the Committee (or
its designee) in its sole discretion. 
 (u) “Disability” means, with respect to a Participant, such
Participant is unable to engage in any substantial gainful activity by reason of any medically determinable physical or mental impairment which can be expected to result in death or which has lasted or can be expected to last for a continuous period
of not less than 12 months, as provided in Section 22(e)(3) of the Code, and will be determined by the Board on the basis of such medical evidence as the Board deems warranted under the circumstances. 

(v) “Effective Date” means immediately prior to the IPO Date, provided that this
Plan is approved by the Company’s stockholders prior to the IPO Date. 
 (w) “Employee” means any person
employed by the Company or an Affiliate. However, service solely as a Director, or payment of a fee for such services, will not cause a Director to be considered an “Employee” for purposes of the Plan. 

(x) “Employer” means the Company or the Affiliate of the Company that employs the Participant. 

(y) “Entity” means a corporation, partnership, limited liability company or other entity. 

(z) “Exchange Act” means the Securities Exchange Act of 1934, as amended, and the rules and regulations
promulgated thereunder. 

  
 27 

 (aa) “Exchange Act Person” means any natural person,
Entity or “group” (within the meaning of Section 13(d) or 14(d) of the Exchange Act), except that “Exchange Act Person” will not include (i) the Company or any Subsidiary of the Company, (ii) any employee benefit
plan of the Company or any Subsidiary of the Company or any trustee or other fiduciary holding securities under an employee benefit plan of the Company or any Subsidiary of the Company, (iii) an underwriter temporarily holding securities
pursuant to a registered public offering of such securities, (iv) an Entity Owned, directly or indirectly, by the stockholders of the Company in substantially the same proportions as their Ownership of stock of the Company; or (v) any
natural person, Entity or “group” (within the meaning of Section 13(d) or 14(d) of the Exchange Act) that, as of the Effective Date, is the Owner, directly or indirectly, of securities of the Company representing more than 50% of the
combined voting power of the Company’s then outstanding securities. 
 (bb) “Fair Market Value”
means, as of any date, unless otherwise determined by the Board, the value of the Common Stock (as determined on a per share or aggregate basis, as applicable) determined as follows: 

(i) If the Common Stock is listed on any established stock exchange or traded on any established market, the Fair Market Value will be
the closing sales price for such stock as quoted on such exchange or market (or the exchange or market with the greatest volume of trading in the Common Stock) on the date of determination, as reported in a source the Board deems reliable. 

(ii) If there is no closing sales price for the Common Stock on the date of determination, then the Fair Market Value will be the
closing selling price on the last preceding date for which such quotation exists. 
 (iii) In the absence of such markets for the
Common Stock, or if otherwise determined by the Board, the Fair Market Value will be determined by the Board in good faith and in a manner that complies with Sections 409A and 422 of the Code. 

(cc) “Governmental Body” means any: (i) nation, state, commonwealth,
province, territory, county, municipality, district or other jurisdiction of any nature; (ii) federal, state, local, municipal, foreign or other government; (iii) governmental or regulatory body, or quasi- governmental body of any nature
(including any governmental division, department, administrative agency or bureau, commission, authority, instrumentality, official, ministry, fund, foundation, center, organization, unit, body or Entity and any court or other tribunal, and for the
avoidance of doubt, any Tax authority) or other body exercising similar powers or authority; or (iv) self-regulatory organization (including the Nasdaq Stock Market, New York Stock Exchange, and the Financial Industry Regulatory Authority).

 (dd) “Grant Notice” means the notice provided to a Participant that he or she has been granted an
Award under the Plan and which includes the name of the Participant, the type of Award, the date of grant of the Award, number of shares of Common Stock subject to the Award or potential cash payment right, (if any), the vesting schedule for the
Award (if any) and other key terms applicable to the Award. 
 (ee) “Incentive
Stock Option” means an option granted pursuant to Section 4 of the Plan that is intended to be, and qualifies as, an “incentive stock option” within the meaning of
Section 422 of the Code. 

  
 28 

 (ff) “IPO Date” means the date of the underwriting agreement
between the Company and the underwriter(s) managing the initial public offering of the Common Stock, pursuant to which the Common Stock is priced for the initial public offering. 

(gg) “Materially Impair” means any amendment to the terms of the Award that
materially adversely affects the Participant’s rights under the Award. A Participant’s rights under an Award will not be deemed to have been Materially Impaired by any such amendment if the Board, in its sole discretion, determines that
the amendment, taken as a whole, does not materially impair the Participant’s rights. For example, the following types of amendments to the terms of an Award do not Materially Impair the Participant’s rights under the Award:
(i) imposition of reasonable restrictions on the minimum number of shares subject to an Option or SAR that may be exercised; (ii) to maintain the qualified status of the Award as an Incentive Stock Option under Section 422 of the
Code; (iii) to change the terms of an Incentive Stock Option in a manner that disqualifies, impairs or otherwise affects the qualified status of the Award as an Incentive Stock Option under Section 422 of the Code; (iv) to clarify the
manner of exemption from, or to bring the Award into compliance with or qualify it for an exemption from, Section 409A; or (v) to comply with other Applicable Laws. 

(hh) “Non-Employee Director” means a
Director who either (i) is not a current employee or officer of the Company or an Affiliate, does not receive compensation, either directly or indirectly, from the Company or an Affiliate for services rendered as a consultant or in any capacity
other than as a Director (except for an amount as to which disclosure would not be required under Item 404(a) of Regulation S-K promulgated pursuant to the Securities Act (“Regulation S-K”)), does not possess an interest in any other transaction for which disclosure would be required under Item 404(a) of Regulation S-K, and is not engaged in a
business relationship for which disclosure would be required pursuant to Item 404(b) of Regulation S-K; or (ii) is otherwise considered a “non-employee
director” for purposes of Rule 16b-3. 
 (ii) “Non-Exempt Award” means any Award that is subject to, and not exempt from, Section 409A, including as the result of (i) a deferral of the issuance of the shares subject to the Award which is
elected by the Participant or imposed by the Company, or (ii) the terms of any Non-Exempt Severance Agreement. 

(jj) “Non-Exempt Director
Award” means a Non-Exempt Award granted to a Participant who was a Director but not an Employee on the applicable grant date. 

(kk) “Non-Exempt Severance Arrangement” means a severance
arrangement or other agreement between the Participant and the Company that provides for acceleration of vesting of an Award and issuance of the shares in respect of such Award upon the Participant’s termination of employment or separation from
service (as such term is defined in Section 409A(a)(2)(A)(i) of the Code (and without regard to any alternative definition thereunder) (“Separation from Service”)
and such severance benefit does not satisfy the requirements for an exemption from application of Section 409A provided under Treasury Regulations Section 1.409A-1(b)(4), 1.409A-1(b)(9) or otherwise. 
 (ll) “Nonstatutory Stock
Option” means any option granted pursuant to Section 4 of the Plan that does not qualify as an Incentive Stock Option. 

  
 29 

 (mm) “Officer” means a person who is an officer of the
Company within the meaning of Section 16 of the Exchange Act. 
 (nn) “Option” means an Incentive
Stock Option or a Nonstatutory Stock Option to purchase shares of Common Stock granted pursuant to the Plan. 
 (oo)
“Option Agreement” means a written or electronic agreement between the Company and the Optionholder evidencing the terms and conditions of the Option grant. The Option Agreement includes the
Grant Notice for the Option and the agreement containing the written summary of the general terms and conditions applicable to the Option and which is provided, including through electronic means, to a Participant along with the Grant Notice. Each
Option Agreement will be subject to the terms and conditions of the Plan. 
 (pp) “Optionholder” means
a person to whom an Option is granted pursuant to the Plan or, if applicable, such other person who holds an outstanding Option. 

(qq) “Other Award” means an award valued in whole or in part by reference to, or otherwise based on,
Common Stock, including the appreciation in value thereof (e.g., options or stock rights with an exercise price or strike price less than 100% of the Fair Market Value at the time of grant) that is not an Incentive Stock Option, Nonstatutory Stock
Option, SAR, Restricted Stock Award, RSU Award or Performance Award. 
 (rr) “Other Award Agreement”
means a written or electronic agreement between the Company and a holder of an Other Award evidencing the terms and conditions of an Other Award grant. Each Other Award Agreement will be subject to the terms and conditions of the Plan. 

(ss) “Own,” “Owned,” “Owner,”
“Ownership” means that a person or Entity will be deemed to “Own,” to have “Owned,” to be the “Owner” of, or to have acquired “Ownership” of securities if such person or Entity,
directly or indirectly, through any contract, arrangement, understanding, relationship or otherwise, has or shares voting power, which includes the power to vote or to direct the voting, with respect to such securities. 

(tt) “Participant” means an Employee, Director or Consultant to whom an Award is granted pursuant to the
Plan or, if applicable, such other person who holds an outstanding Award. 
 (uu) “Performance Award”
means an Award that may vest or may be exercised or a cash award that may vest or become earned and paid contingent upon the attainment during a Performance Period of certain Performance Goals and which is granted under the terms and conditions of
Section 5(b) pursuant to such terms as are approved by the Board. In addition, to the extent permitted by Applicable Law and set forth in the applicable Award Agreement, the Board may determine that cash or other property may be used in payment
of Performance Awards. Performance Awards that are settled in cash or other property are not required to be valued in whole or in part by reference to, or otherwise based on, the Common Stock. 

(vv) “Performance Criteria” means one or more criteria that the Board will select for purposes of
establishing the Performance Goals for a Performance Period. The Performance Criteria that will be used to establish such Performance Goals may be based on any one of, or combination of, the following as determined by the Board: earnings (including
earnings per share 

  
 30 

 
and net earnings); earnings before interest, taxes and depreciation; earnings before interest, taxes, depreciation and amortization; total stockholder return; return on equity or average
stockholder’s equity; return on assets, investment, or capital employed; stock price; margin (including gross margin); income (before or after taxes); operating income; operating income after taxes;
pre-tax profit; operating cash flow; sales or revenue targets; increases in revenue or product revenue; expenses and cost reduction goals; improvement in or attainment of working capital levels; economic value
added (or an equivalent metric); market share; cash flow; cash flow per share; share price performance; debt reduction; customer satisfaction; stockholders’ equity; capital expenditures; debt levels; operating profit or net operating profit;
workforce diversity; growth of net income or operating income; billings; financing; regulatory milestones; stockholder liquidity; corporate governance and compliance; intellectual property; personnel matters; progress of internal research; progress
of partnered programs; partner satisfaction; budget management; partner or collaborator achievements; internal controls, including those related to the Sarbanes- Oxley Act of 2002; investor relations, analysts and communication; implementation or
completion of projects or processes; employee retention; number of users, including unique users; strategic partnerships or transactions (including in-licensing and
out-licensing of intellectual property); establishing relationships with respect to the marketing, distribution and sale of the Company’s products; supply chain achievements; co-development, co-marketing, profit sharing, joint venture or other similar arrangements; individual performance goals; corporate development and planning goals; and other
measures of performance selected by the Board or Committee whether or not listed herein. 
 (ww)
“Performance Goals” means, for a Performance Period, one or more goals established by the Board for the Performance Period based upon the Performance Criteria. Performance Goals may be based on
a Company-wide basis, with respect to one or more business units, divisions, Affiliates, or business segments, and in either absolute terms or relative to the performance of one or more comparable companies or the performance of one or more relevant
indices. Unless specified otherwise by the Board (i) in the Award Agreement at the time the Award is granted or (ii) in such other document setting forth the Performance Goals at the time the Performance Goals are established, the Board
will appropriately make adjustments in the method of calculating the attainment of Performance Goals for a Performance Period as follows: (1) to exclude restructuring and/or other nonrecurring charges; (2) to exclude exchange rate effects;
(3) to exclude the effects of changes to generally accepted accounting principles; (4) to exclude the effects of any statutory adjustments to corporate tax rates; (5) to exclude the effects of items that are “unusual” in
nature or occur “infrequently” as determined under generally accepted accounting principles; (6) to exclude the dilutive effects of acquisitions or joint ventures; (7) to assume that any business divested by the Company achieved
performance objectives at targeted levels during the balance of a Performance Period following such divestiture; (8) to exclude the effect of any change in the outstanding shares of common stock of the Company by reason of any stock dividend or
split, stock repurchase, reorganization, recapitalization, merger, consolidation, spin-off, combination or exchange of shares or other similar corporate change, or any distributions to common stockholders
other than regular cash dividends; (9) to exclude the effects of stock based compensation and the award of bonuses under the Company’s bonus plans; (10) to exclude costs incurred in connection with potential acquisitions or
divestitures that are required to be expensed under generally accepted accounting principles; and (11) to exclude the goodwill and intangible asset impairment charges that are required to be recorded under generally accepted accounting
principles. In addition, the Board may establish or provide for other adjustment items in the Award 

  
 31 

 Agreement at the time the Award is granted or in such other document setting forth the Performance Goals at
the time the Performance Goals are established. In addition, the Board retains the discretion to reduce or eliminate the compensation or economic benefit due upon attainment of Performance Goals and to define the manner of calculating the
Performance Criteria it selects to use for such Performance Period. Partial achievement of the specified criteria may result in the payment or vesting corresponding to the degree of achievement as specified in the Award Agreement or the written
terms of a Performance Cash Award. 
 (xx) “Performance Period” means the period of time selected by
the Board over which the attainment of one or more Performance Goals will be measured for the purpose of determining a Participant’s right to vesting or exercise of an Award. Performance Periods may be of varying and overlapping duration, at
the sole discretion of the Board. 
 (yy) “Plan” means this Adagio Therapeutics, Inc. 2021 Equity
Incentive Plan, as amended from time to time. 
 (zz) “Plan Administrator” means the person, persons,
and/or third-party administrator designated by the Company to administer the day to day operations of the Plan and the Company’s other equity incentive programs. 

(aaa) “Post-Termination Exercise Period” means the period following termination of a Participant’s
Continuous Service within which an Option or SAR is exercisable, as specified in Section 4(h). 
 (bbb) “Prior
Plan’s Available Reserve” means the number of shares available for the grant of new awards under the Prior Plan as of the Effective Date. 

(ccc) “Prior Plan” means the Adagio Therapeutics, Inc. 2020 Equity Incentive Plan.

 (ddd) “Restricted Stock Award” or “RSA” means an Award of shares of Common
Stock which is granted pursuant to the terms and conditions of Section 5(a). 
 (eee) “Restricted Stock Award
Agreement” means a written or electronic agreement between the Company and a holder of a Restricted Stock Award evidencing the terms and conditions of a Restricted Stock Award grant. The Restricted Stock Award Agreement includes the
Grant Notice for the Restricted Stock Award and the agreement containing the written summary of the general terms and conditions applicable to the Restricted Stock Award and which is provided, including by electronic means, to a Participant along
with the Grant Notice. Each Restricted Stock Award Agreement will be subject to the terms and conditions of the Plan. 
 (fff)
“Returning Shares” means shares subject to outstanding stock awards granted under the Prior Plan and that following the Effective Date: (A) are not issued because such stock award or any portion thereof
expires or otherwise terminates without all of the shares covered by such stock award having been issued; (B) are not issued because such stock award or any portion thereof is settled in cash; (C) are forfeited back to or repurchased by
the Company because of the failure to meet a contingency or condition required for the vesting of such shares; (D) are withheld or reacquired to satisfy the exercise, strike or purchase price; or (E) are withheld or reacquired to satisfy a
tax withholding obligation. 

  
 32 

 (ggg) “RSU Award” or “RSU” means an
Award of restricted stock units representing the right to receive an issuance of shares of Common Stock which is granted pursuant to the terms and conditions of Section 5(a). 

(hhh) “RSU Award Agreement” means a written or electronic agreement between the Company and a holder of
an RSU Award evidencing the terms and conditions of an RSU Award grant. The RSU Award Agreement includes the Grant Notice for the RSU Award and the agreement containing the written summary of the general terms and conditions applicable to the RSU
Award and which is provided, including by electronic means, to a Participant along with the Grant Notice. Each RSU Award Agreement will be subject to the terms and conditions of the Plan. 

(iii) “Rule 16b-3” means Rule 16b-3 promulgated under the Exchange Act or any successor to Rule 16b-3, as in effect from time to time. 

(jjj) “Rule 405” means Rule 405 promulgated under the Securities Act. 

(kkk) “Section 409A” means Section 409A of the Code and the
regulations and other guidance thereunder. 
 (lll) “Section 409A
Change in Control” means a change in the ownership or effective control of the Company, or in the ownership of a substantial portion of the Company’s assets, as
provided in Section 409A(a)(2)(A)(v) of the Code and Treasury Regulations Section 1.409A- 3(i)(5) (without regard to any alternative definition thereunder). 

(mmm) “Securities Act” means the Securities Act of 1933, as amended. 

(nnn) “Share Reserve” means the number of shares available for issuance under the Plan as set forth in
Section 2(a). 
 (ooo) “Stock Appreciation Right” or “SAR” means a right
to receive the appreciation on Common Stock that is granted pursuant to the terms and conditions of Section 4. 
 (ppp)
“SAR Agreement” means a written or electronic agreement between the Company and a holder of a SAR evidencing the terms and conditions of a SAR grant. The SAR Agreement includes the Grant Notice for the SAR and the
agreement containing the written summary of the general terms and conditions applicable to the SAR and which is provided, including by electronic means, to a Participant along with the Grant Notice. Each SAR Agreement will be subject to the terms
and conditions of the Plan. 
 (qqq) “Subsidiary” means, with respect to the Company, (i) any
corporation of which more than 50% of the outstanding capital stock having ordinary voting power to elect a majority of the board of directors of such corporation (irrespective of whether, at the time, stock of any other class or classes of such
corporation will have or might have voting power by reason of the happening of any contingency) is at the time, directly or indirectly, Owned by the Company, and (ii) any partnership, limited liability company or other entity in which the Company
has a direct or indirect interest (whether in the form of voting or participation in profits or capital contribution) of more than 50%. 

  
 33 

 (rrr) “Ten Percent Stockholder” means a person who Owns (or
is deemed to Own pursuant to Section 424(d) of the Code) stock possessing more than 10% of the total combined voting power of all classes of stock of the Company or any Affiliate. 

(sss) “Trading Policy” means the Company’s policy permitting certain individuals to sell Company
shares only during certain “window” periods and/or otherwise restricts the ability of certain individuals to transfer or encumber Company shares, as in effect from time to time. 

(ttt) “Unvested Non-Exempt
Award” means the portion of any Non-Exempt Award that had not vested in accordance with its terms upon or prior to the date of any Corporate Transaction. 

(uuu) “Vested Non-Exempt Award” means the portion of any Non-Exempt Award that had vested in accordance with its terms upon or prior to the date of a Corporate Transaction. 

  
 34 

 ADAGIO THERAPEUTICS, INC. 

STOCK OPTION GRANT NOTICE 

(2021 EQUITY INCENTIVE PLAN) 

Adagio Therapeutics, Inc. (the “Company”), pursuant to the Company’s 2021 Equity Incentive Plan (the
“Plan”), has granted to you (“Optionholder”) an option to purchase the number of shares of the Common Stock set forth below (the “Option”). Your Option is subject
to all of the terms and conditions as set forth herein and in the Plan, and the Stock Option Agreement and the Notice of Exercise, all of which are attached hereto and incorporated herein in their entirety. Capitalized terms not explicitly defined
herein but defined in the Plan or the Stock Option Agreement shall have the meanings set forth in the Plan or the Stock Option Agreement, as applicable. 
  

							
		 	 Optionholder:
	  		  	
		 		  	  
	  	
		 	 Date of Grant:
	  		  	
		 		  	  
	  	
		 	 Vesting Commencement Date:
	  		  	
		 		  	  
	  	
		 	 Number of Shares of Common Stock Subject to Option:
	  		  	
		 		  	  
	  	
		 	 Exercise Price (Per Share):
	  		  	
		 		  	  
	  	
		 	 Total Exercise Price:
	  		  	
		 		  	  
	  	
		 	 Expiration Date:
	  		  	
		 		  	  
	  	

 Type of Grant: [Incentive Stock Option] OR [Nonstatutory Stock Option] 

Exercise and 
 Vesting Schedule: Subject to the
Optionholder’s Continuous Service through each applicable vesting date, the Option will vest as follows: 

[                      
                                         
                                         
                                         
    ] 
 Optionholder Acknowledgements: By your signature below or by electronic acceptance or authentication in a form authorized
by the Company, you understand and agree that: 
  

	 	•	 	 The Option is governed by this Stock Option Grant Notice (this “Grant Notice”), and the
provisions of the Plan and the Stock Option Agreement and the Notice of Exercise, all of which are made a part of this document. Unless otherwise provided in the Plan, this Grant Notice and the Stock Option Agreement (together, the
“Option Agreement”) may not be modified, amended or revised except in a writing signed by you and a duly authorized officer of the Company. 

 

	 	•	 	 [If the Option is an Incentive Stock Option, it (plus other outstanding Incentive Stock Options granted to you)
cannot be first exercisable for more than $100,000 in value (measured by exercise price) in any calendar year. Any excess over $100,000 is a Nonstatutory Stock Option.] 

	 	•	 	 You consent to receive this Grant Notice, the Stock Option Agreement, the Plan, the Prospectus and any other
Plan-related documents by electronic delivery and to participate in the Plan through an on-line or electronic system established and maintained by the Company or another third party designated by the Company.

  

	 	•	 	 You have read and are familiar with the provisions of the Plan, the Stock Option Agreement, the Notice of
Exercise and the Prospectus. In the event of any conflict between the provisions in this Grant Notice, the Option Agreement, the Notice of Exercise, or the Prospectus and the terms of the Plan, the terms of the Plan shall control.

  

	 	•	 	 The Option Agreement sets forth the entire understanding between you and the Company regarding the acquisition of
Common Stock and supersedes all prior oral and written agreements, promises and/or representations on that subject with the exception of other equity awards previously granted to you and any written employment agreement, offer letter, severance
agreement, written severance plan or policy, or other written agreement between the Company and you in each case that specifies the terms that should govern this Option. 

 

	 	•	 	 Counterparts may be delivered via facsimile, electronic mail (including pdf or any electronic signature complying
with the U.S. federal ESIGN Act of 2000, Uniform Electronic Transactions Act or other applicable law) or other transmission method and any counterpart so delivered will be deemed to have been duly and validly delivered and be valid and effective for
all purposes. 

  

									
	ADAGIO THERAPEUTICS, INC.	 		 	OPTIONHOLDER:
				
	By:	 	  
	 		 	  

		 	Signature	 		 		 	Signature
					
	Title:	 	  
	 		 	Date:	 	  

	Date:	 	  
	 		 		 	

 ATTACHMENTS: Stock Option Agreement, 2021 Equity Incentive Plan, Notice of Exercise 

 ATTACHMENT I 

ADAGIO THERAPEUTICS, INC. 

STOCK OPTION AGREEMENT 

(2021 EQUITY INCENTIVE PLAN) 

As reflected by your Stock Option Grant Notice (“Grant Notice”), Adagio Therapeutics, Inc. (the
“Company”) has granted you an option under the Company’s 2021 Equity Incentive Plan (the “Plan”) to purchase a number of shares of Common Stock at the exercise price indicated in your Grant Notice
(the “Option”). Capitalized terms not explicitly defined in this Agreement but defined in the Grant Notice or the Plan shall have the meanings set forth in the Grant Notice or Plan, as applicable. The terms of your Option as
specified in the Grant Notice and this Stock Option Agreement constitute your Option Agreement. 
 The general terms and conditions
applicable to your Option are as follows: 
 1. GOVERNING PLAN
DOCUMENT. Your Option is subject to all the provisions of the Plan, including but not limited to the provisions in: 

(a) Section 6 regarding the impact of a Capitalization Adjustment, dissolution, liquidation, or Corporate Transaction on your Option;

 (b) Section 9(e) regarding the Company’s retained rights to terminate your Continuous Service notwithstanding the grant of the
Option; and 
 (c) Section 8 regarding the tax consequences of your Option. 

Your Option is further subject to all interpretations, amendments, rules and regulations, which may from time to time be promulgated and adopted pursuant to
the Plan. In the event of any conflict between the Option Agreement and the provisions of the Plan, the provisions of the Plan shall control. 

2. EXERCISE. 

(a) You may generally exercise the vested portion of your Option for whole shares of Common Stock at any time during its term by
delivery of payment of the exercise price and applicable withholding taxes and other required documentation to the Plan Administrator in accordance with the exercise procedures established by the Plan Administrator, which may include an electronic
submission. Please review Sections 4(i), 4(j) and 7(b)(v) of the Plan, which may restrict or prohibit your ability to exercise your Option during certain periods. 

(b) To the extent permitted by Applicable Law, you may pay your Option exercise price as follows: 

(i) cash, check, bank draft or money order; 

 (ii) subject to Company and/or Committee consent at the time of exercise, pursuant to
a “cashless exercise” program as further described in Section 4(c)(ii) of the Plan if at the time of exercise the Common Stock is publicly traded; 

(iii) subject to Company and/or Committee consent at the time of exercise, by delivery of previously owned shares of Common Stock as
further described in Section 4(c)(iii) of the Plan; or 
 (iv) subject to Company and/or Committee consent at the time of
exercise, if the Option is a Nonstatutory Stock Option, by a “net exercise” arrangement as further described in Section 4(c)(iv) of the Plan. 

(c) By accepting your Option, you agree that you will not sell, dispose of, transfer, make any short sale of, grant any option for the
purchase of, or enter into any hedging or similar transaction with the same economic effect as a sale with respect to any shares of Common Stock or other securities of the Company held by you, for a period of one hundred eighty (180) days
following the effective date of a registration statement of the Company filed under the Securities Act or such longer period as the underwriters or the Company will request to facilitate compliance with FINRA Rule 2241 or any successor or similar
rules or regulation (the “Lock-Up Period”); provided, however, that nothing contained in this section will prevent the exercise of a repurchase
option, if any, in favor of the Company during the Lock-Up Period. You further agree to execute and deliver such other agreements as may be reasonably requested by the Company or the underwriters that are
consistent with the foregoing or that are necessary to give further effect thereto. In order to enforce the foregoing covenant, the Company may impose stop-transfer instructions with respect to your shares of Common Stock until the end of such
period. You also agree that any transferee of any shares of Common Stock (or other securities) of the Company held by you will be bound by this Section 2(c). The underwriters of the Company’s stock are intended third party beneficiaries of
this Section 2(c) and will have the right, power and authority to enforce the provisions hereof as though they were a party hereto. 

3. TERM. You may not exercise your Option before the commencement of
its term or after its term expires. The term of your Option commences on the Date of Grant and expires upon the earliest of the following: 

(a) immediately upon the termination of your Continuous Service for Cause; 

(b) three months after the termination of your Continuous Service for any reason other than Cause, Disability or death; 

(c) 12 months after the termination of your Continuous Service due to your Disability; 

(d) 18 months after your death if you die during your Continuous Service; 

(e) immediately upon a Corporate Transaction if the Board has determined that the Option will terminate in connection with a
Corporate Transaction, 
 (f) the Expiration Date indicated in your Grant Notice; or 

 (g) the day before the 10th anniversary of the Date of Grant. 

Notwithstanding the foregoing, if you die during the period provided in Section 3(b) or 3(c) above, the term of your Option shall not expire until the
earlier of (i) 18 months after your death, (ii) upon any termination of the Option in connection with a Corporate Transaction, (iii) the Expiration Date indicated in your Grant Notice, or (iv) the day before the tenth anniversary of
the Date of Grant. Additionally, the Post-Termination Exercise Period of your Option may be extended as provided in Section 4(i) of the Plan. 

To obtain the federal income tax advantages associated with an Incentive Stock Option, the Code requires that at all times beginning on the
date of grant of your Option and ending on the day three months before the date of your Option’s exercise, you must be an employee of the Company or an Affiliate, except in the event of your death or Disability. If the Company provides for the
extended exercisability of your Option under certain circumstances for your benefit, your Option will not necessarily be treated as an Incentive Stock Option if you exercise your Option more than three months after the date your employment
terminates. 
 4. WITHHOLDING OBLIGATIONS. As further provided in Section 8 of the Plan:
(a) you may not exercise your Option unless the applicable tax withholding obligations are satisfied, and (b) at the time you exercise your Option, in whole or in part, or at any time thereafter as requested by the Company, you hereby
authorize withholding from payroll and any other amounts payable to you, and otherwise agree to make adequate provision for (including by means of a “cashless exercise” pursuant to a program developed under Regulation T as promulgated by
the Federal Reserve Board to the extent permitted by the Company), any sums required to satisfy the federal, state, local and foreign tax withholding obligations, if any, which arise in connection with the exercise of your Option in accordance with
the withholding procedures established by the Company. Accordingly, you may not be able to exercise your Option even though the Option is vested, and the Company shall have no obligation to issue shares of Common Stock subject to your Option, unless
and until such obligations are satisfied. In the event that the amount of the Company’s withholding obligation in connection with your Option was greater than the amount actually withheld by the Company, you agree to indemnify and hold the
Company harmless from any failure by the Company to withhold the proper amount. 
 5. INCENTIVE STOCK
OPTION DISPOSITION REQUIREMENT. If your Option is an Incentive Stock Option, you must notify the Company in writing within 15 days after the date of any disposition
of any of the shares of the Common Stock issued upon exercise of your Option that occurs within two years after the date of your Option grant or within one year after such shares of Common Stock are transferred upon exercise of your Option. 

6. TRANSFERABILITY. Except as otherwise provided in Section 4(e) of the Plan, your Option is not
transferable, except by will or by the applicable laws of descent and distribution, and is exercisable during your life only by you. 

7. CORPORATE TRANSACTION. Your Option is subject to the terms
of any agreement governing a Corporate Transaction involving the Company, including, without limitation, a provision for the appointment of a stockholder representative that is authorized to act on your behalf with respect to any escrow, indemnities
and any contingent consideration. 

 8. NO LIABILITY FOR
TAXES. As a condition to accepting the Option, you hereby (a) agree to not make any claim against the Company, or any of its Officers, Directors, Employees or Affiliates related to tax liabilities arising from the Option or
other Company compensation and (b) acknowledge that you were advised to consult with your own personal tax, financial and other legal advisors regarding the tax consequences of the Option and have either done so or knowingly and voluntarily
declined to do so. Additionally, you acknowledge that the Option is exempt from Section 409A only if the exercise price is at least equal to the “fair market value” of the Common Stock on the date of grant as determined by the
Internal Revenue Service and there is no other impermissible deferral of compensation associated with the Option. Additionally, as a condition to accepting the Option, you agree not make any claim against the Company, or any of its Officers,
Directors, Employees or Affiliates in the event that the Internal Revenue Service asserts that such exercise is less than the “fair market value” of the Common Stock on the date of grant as subsequently determined by the Internal Revenue
Service. 
 9. SEVERABILITY. If any part of this Option Agreement or the
Plan is declared by any court or governmental authority to be unlawful or invalid, such unlawfulness or invalidity will not invalidate any portion of this Option Agreement or the Plan not declared to be unlawful or invalid. Any Section of this
Option Agreement (or part of such a Section) so declared to be unlawful or invalid will, if possible, be construed in a manner which will give effect to the terms of such Section or part of a Section to the fullest extent possible while remaining
lawful and valid 
 10. OTHER DOCUMENTS. You hereby acknowledge receipt of or the right to
receive a document providing the information required by Rule 428(b)(1) promulgated under the Securities Act, which includes the Prospectus. In addition, you acknowledge receipt of the Company’s Trading Policy. 

11. QUESTIONS. If you have questions regarding these or any other terms and conditions applicable to your Option,
including a summary of the applicable federal income tax consequences please see the Prospectus. 
 * * * * 

 ATTACHMENT II 

2021 EQUITY INCENTIVE PLAN 

 ATTACHMENT III 

ADAGIO THERAPEUTICS, INC. 

NOTICE OF EXERCISE 

(2021 EQUITY INCENTIVE PLAN) 

ADAGIO THERAPEUTICS, INC. 

303 WYMAN STREET, SUITE 300 

			
	WALTHAM, MA 02451	 	Date of Exercise:
                                

 This constitutes notice to Adagio Therapeutics, Inc. (the “Company”) that I elect to
purchase the below number of shares of Common Stock of the Company (the “Shares”) by exercising my Option for the price set forth below. Capitalized terms not explicitly defined in this Notice of Exercise but defined in the
Stock Option Grant Notice, Stock Option Agreement or 2021 Equity Incentive Plan (the “Plan”) shall have the meanings set forth in the Stock Option Grant Notice, Stock Option Agreement or Plan, as applicable. Use of certain
payment methods is subject to Company and/or Committee consent and certain additional requirements set forth in the Stock Option Agreement and the Plan. 
  

									
	Type of option (check one):	  	Incentive ☐	 	  	Nonstatutory ☐	 
			
	 Date of Grant:
	  				  			
		  	  
	  
	 	  			
	 Number of Shares as to which Option is exercised:
	  				  			
		  	  
	  
	 	  			
	 Certificates to be issued in name of:
	  				  			
		  	  
	  
	 	  			
	 Total exercise price:
	  	$	                             	 	  			
	 Cash, check, bank draft or money order delivered herewith:
	  	$	                             	 	  			
	 Value of
                     Shares delivered herewith:
	  	$	                             	 	  			
	 Regulation T Program (cashless exercise)
	  	$	                             	 	  			
	 Value of
                     Shares pursuant to net exercise:
	  	$	                             	 	  			

 By this exercise, I agree (i) to provide such additional documents as you may require
pursuant to the terms of the Plan, (ii) to satisfy the tax withholding obligations, if any, relating to the exercise of this Option as set forth in the Stock Option Agreement, and (iii) if this exercise relates to an incentive stock
option, to notify you in writing within 15 days after the date of any disposition of any of the Shares issued upon exercise of this Option that occurs within two years after the Date of Grant or within one year after such Shares are issued upon
exercise of this Option. 
 I further agree that, if required by the Company (or a representative of the underwriters) in connection with
the first underwritten registration of the offering of any securities of the Company under the Securities Act, I will not sell, dispose of, transfer, make any short sale of, grant any option for the purchase of, or enter into any hedging or similar
transaction with the same economic effect as a sale with respect to any shares of Common Stock or other securities of the Company for a period of one hundred eighty (180) days following the effective date of a registration statement of the
Company filed under the Securities Act (or such longer period as the underwriters or the Company shall request to facilitate compliance with FINRA Rule 2241 or any successor or similar rule or regulation) (the “Lock-Up Period”). I further agree to execute and deliver such other agreements as may be reasonably requested by the Company or the underwriters that are consistent with the foregoing or that are
necessary to give further effect thereto. In order to enforce the foregoing covenant, the Company may impose stop-transfer instructions with respect to securities subject to the foregoing restrictions until the end of such period. 

 

	
	Very truly yours,
	
	  

 Non-Employee Director 

ADAGIO THERAPEUTICS, INC. 

STOCK OPTION GRANT NOTICE 

(2021 EQUITY INCENTIVE PLAN) 

Adagio Therapeutics, Inc. (the “Company”), pursuant to the Company’s 2021 Equity Incentive Plan (the
“Plan”), has granted to you (“Optionholder”) an option to purchase the number of shares of the Common Stock set forth below (the “Option”). Your Option is subject to all of the
terms and conditions as set forth herein and in the Plan, and the Stock Option Agreement and the Notice of Exercise, all of which are attached hereto and incorporated herein in their entirety. Capitalized terms not explicitly defined herein but
defined in the Plan or the Stock Option Agreement shall have the meanings set forth in the Plan or the Stock Option Agreement, as applicable. 
  

			
	 Optionholder:
	 	  

	 Date of Grant:
	 	  

	 Number of Shares of Common Stock Subject to Option:
	 	  

	 Exercise Price (Per Share):
	 	  

	 Total Exercise Price:
	 	  

	 Expiration Date:
	 	  

  

			
	Type of Grant:	  	Nonstatutory Stock Option
		
	Exercise and Vesting Schedule:	  	 Subject to the Optionholder’s Continuous Service through each applicable vesting date, the Option will vest as follows, subject to the
potential vesting acceleration described in Section 2 of the Stock Option Agreement:
  

[Initial Grant][One-third (1/3rd) of the shares subject to
the Option shall vest and become exercisable on the first (1st) anniversary of the Date of Grant and one thirty-sixth (1/36th) of the shares
subject to the Option shall vest and become exercisable each month thereafter on the same day of the month as the Date of Grant (and if there is no corresponding day, on the last day of the month), such that the Option shall be fully vested and
exercisable on the third (3rd) anniversary of the Date of Grant.]
  

[Annual Grant][The shares subject to the Option shall vest and become exercisable upon the earlier to occur of (i) the first (1st) anniversary of the Date of Grant and (ii) the date of the next annual meeting of the stockholders of the Company.]

  
 1 

 Optionholder Acknowledgements: By your signature below or by electronic acceptance or authentication
in a form authorized by the Company, you understand and agree that: 
  

	 	•	 	 The Option is governed by this Stock Option Grant Notice, and the provisions of the Plan and the Stock Option
Agreement and the Notice of Exercise, all of which are made a part of this document. Unless otherwise provided in the Plan, this Grant Notice and the Stock Option Agreement (together, the “Option Agreement”) may not be
modified, amended or revised except in a writing signed by you and a duly authorized officer of the Company. 

  

	 	•	 	 You consent to receive this Grant Notice, the Stock Option Agreement, the Plan, the Prospectus and any other
Plan-related documents by electronic delivery and to participate in the Plan through an on-line or electronic system established and maintained by the Company or another third party designated by the Company.

  

	 	•	 	 You have read and are familiar with the provisions of the Plan, the Stock Option Agreement, the Notice of
Exercise and the Prospectus. In the event of any conflict between the provisions in this Grant Notice, the Option Agreement, the Notice of Exercise, or the Prospectus and the terms of the Plan, the terms of the Plan shall control.

  

	 	•	 	 The Option Agreement sets forth the entire understanding between you and the Company regarding the acquisition of
Common Stock and supersedes all prior oral and written agreements, promises and/or representations on that subject with the exception of other equity awards previously granted to you and any written employment agreement, offer letter, severance
agreement, written severance plan or policy, or other written agreement between the Company and you in each case that specifies the terms that should govern this Option. 

 

	 	•	 	 Counterparts may be delivered via facsimile, electronic mail (including pdf or any electronic signature complying
with the U.S. federal ESIGN Act of 2000, Uniform Electronic Transactions Act or other applicable law) or other transmission method and any counterpart so delivered will be deemed to have been duly and validly delivered and be valid and effective for
all purposes. 

  

									
	 ADAGIO THERAPEUTICS, INC.
	 		 	 OPTIONHOLDER:

					
	By:	 	      
	 		 	By:	 	      

		 	Signature	 		 		 	Signature
					
	Title:	 	  
	 		 	Date:	 	  

					
	Date:	 	  
	 		 		 	

 ATTACHMENTS: Stock Option Agreement, 2021 Equity Incentive Plan, Notice of Exercise 

  
 2 

 Non-Employee Director 

ATTACHMENT I 

STOCK OPTION AGREEMENT 

 Non-Employee Director 

ADAGIO THERAPEUTICS, INC. 

2021 EQUITY INCENTIVE PLAN 

STOCK OPTION AGREEMENT 

As reflected by your Stock Option Grant Notice (“Grant Notice”), Adagio Therapeutics, Inc. (the
“Company”) has granted you an option under its 2021 Equity Incentive Plan (the “Plan”) to purchase a number of shares of Common Stock at the exercise price indicated in your Grant Notice (the
“Option”). Capitalized terms not explicitly defined in this Agreement but defined in the Grant Notice or the Plan shall have the meanings set forth in the Grant Notice or Plan, as applicable. The terms of your Option as
specified in the Grant Notice and this Stock Option Agreement constitute your Option Agreement. 
 The general terms and conditions
applicable to your Option are as follows: 
 1. GOVERNING PLAN
DOCUMENT. Your Option is subject to all the provisions of the Plan, including but not limited to the provisions in: 

(a) Section 6 regarding the impact of a Capitalization Adjustment, dissolution, liquidation, or Corporate Transaction on your Option;

 (b) Section 9(e) regarding the Company’s retained rights to terminate your Continuous Service notwithstanding the grant of the
Option; and 
 (c) Section 8 regarding the tax consequences of your Option. 

Your Option is further subject to all interpretations, amendments, rules and regulations, which may from time to time be promulgated and adopted pursuant to
the Plan. In the event of any conflict between the Option Agreement and the provisions of the Plan, the provisions of the Plan shall control. 

2. VESTING. 

(a) Your Option will vest as provided in your Grant Notice, subject to the provisions contained herein and the terms of the Plan.
Vesting will cease upon the termination of your Continuous Service. Notwithstanding the foregoing, if a Change in Control occurs and your Continuous Service has not terminated as of immediately prior to such Change in Control, then the vesting and
exercisability of your Option will be accelerated in full upon such Change in Control. 
 (b) If any payment or benefit you would
receive from the Company or otherwise in connection with a Change in Control or other similar transaction (a “280G Payment”) would (i) constitute a “parachute payment” within the
meaning of Section 280G of the Code, and (ii) but for this sentence, be subject to the excise tax imposed by Section 4999 of the Code (the “Excise Tax”), then any such 280G Payment (a
“Payment”) shall be equal to the Reduced Amount. The “Reduced Amount” shall be either (x) the largest portion of the Payment that would result in no portion of the Payment (after reduction) being
subject to the Excise Tax or (y) the largest 

  
 1 

 portion, up to and including the total, of the Payment, whichever amount (i.e., the amount determined by
clause (x) or by clause (y)), after taking into account all applicable federal, state and local employment taxes, income taxes, and the Excise Tax (all computed at the highest applicable marginal rate), results in your receipt, on an after-tax basis, of the greater economic benefit notwithstanding that all or some portion of the Payment may be subject to the Excise Tax. If a reduction in a Payment is required pursuant to the preceding sentence
and the Reduced Amount is determined pursuant to clause (x) of the preceding sentence, the reduction shall occur in the manner (the “Reduction Method”) that results in the greatest economic benefit for you. If more than
one method of reduction will result in the same economic benefit, the items so reduced will be reduced pro rata (the “Pro Rata Reduction Method”). 

Notwithstanding the foregoing, if the Reduction Method or the Pro Rata Reduction Method would result in any portion of the Payment being
subject to taxes pursuant to Section 409A of the Code that would not otherwise be subject to taxes pursuant to Section 409A of the Code, then the Reduction Method and/or the Pro Rata Reduction Method, as the case may be, shall be modified
so as to avoid the imposition of taxes pursuant to Section 409A of the Code as follows: (A) as a first priority, the modification shall preserve to the greatest extent possible, the greatest economic benefit for you as determined on an after-tax basis; (B) as a second priority, Payments that are contingent on future events (e.g., being terminated without cause), shall be reduced (or eliminated) before Payments that are not contingent on
future events; and (C) as a third priority, Payments that are “deferred compensation” within the meaning of Section 409A of the Code shall be reduced (or eliminated) before Payments that are not deferred compensation within the
meaning of Section 409A of the Code. 
 Unless you and the Company agree on an alternative accounting firm, the accounting firm engaged
by the Company for general tax compliance purposes as of the day prior to the effective date of the change of control transaction triggering the Payment shall perform the foregoing calculations. If the accounting firm so engaged by the Company is
serving as accountant or auditor for the individual, entity or group effecting the change of control transaction, the Company shall appoint a nationally recognized accounting firm to make the determinations required hereunder. The Company shall bear
all expenses with respect to the determinations by such accounting firm required to be made hereunder. The Company shall use commercially reasonable efforts to cause the accounting firm engaged to make the determinations hereunder to provide its
calculations, together with detailed supporting documentation, to you and the Company within fifteen (15) calendar days after the date on which your right to a 280G Payment becomes reasonably likely to occur (if requested at that time by you or
the Company) or such other time as requested by you or the Company. 
 If you receive a Payment for which the Reduced Amount was determined
pursuant to clause (x) of the first paragraph of this Section 2(b) and the Internal Revenue Service determines thereafter that some portion of the Payment is subject to the Excise Tax, you shall promptly return to the Company a sufficient
amount of the Payment (after reduction pursuant to clause (x) of the first paragraph of this Section 2(b) so that no portion of the remaining Payment is subject to the Excise Tax. For the avoidance of doubt, if the Reduced Amount was
determined pursuant to clause (y) in the first paragraph of this Section 2(b), you shall have no obligation to return any portion of the Payment pursuant to the preceding sentence. 

  
 2 

 3. EXERCISE. 

(a) You may generally exercise the vested portion of your Option for whole shares of Common Stock at any time during its term by
delivery of payment of the exercise price and applicable withholding taxes and other required documentation to the Plan Administrator in accordance with the exercise procedures established by the Plan Administrator, which may include an electronic
submission. Please review Sections 4(i), 4(j) and 7(b)(v) of the Plan, which may restrict or prohibit your ability to exercise your Option during certain periods. 

(b) To the extent permitted by Applicable Law, you may pay your Option exercise price as follows: 

(i) cash, check, bank draft or money order; 

(ii) subject to Company and/or Committee consent at the time of exercise, pursuant to a “cashless exercise” program as
further described in Section 4(c)(ii) of the Plan if at the time of exercise the Common Stock is publicly traded; 
 (iii)
subject to Company and/or Committee consent at the time of exercise, by delivery of previously owned shares of Common Stock as further described in Section 4(c)(iii) of the Plan; or 

(iv) subject to Company and/or Committee consent at the time of exercise, if the Option is a Nonstatutory Stock Option, by a “net
exercise” arrangement as further described in Section 4(c)(iv) of the Plan. 
 4.
TERM. You may not exercise your Option before the commencement of its term or after its term expires. The term of your Option commences on the Date of Grant and expires upon the earliest of the following:

 (a) immediately upon the termination of your Continuous Service for Cause; 

(b) 12 months after the termination of your Continuous Service; 

(c) immediately upon a Corporate Transaction if the Board has determined that the Option will terminate in connection with a Corporate
Transaction, 
 (d) the Expiration Date indicated in your Grant Notice; or 

(e) the day before the 10th anniversary of the Date of Grant. 

Notwithstanding the foregoing, if you die during the period provided in Section 4(b) above, the term of your Option shall not expire until the earlier of
(i) 12 months after your death, (ii) upon any termination of the Option in connection with a Corporate Transaction, (iii) the Expiration Date indicated in your Grant Notice, or (iv) the day before the tenth anniversary of the Date of
Grant. Additionally, the Post-Termination Exercise Period of your Option may be extended as provided in Section 4(i) of the Plan. 

  
 3 

 5. WITHHOLDING
OBLIGATIONS. As further provided in Section 8 of the Plan: (a) you may not exercise your Option unless the applicable tax withholding obligations are satisfied, and (b) at the time you
exercise your Option, in whole or in part, or at any time thereafter as requested by the Company, you hereby authorize withholding from payroll and any other amounts payable to you, and otherwise agree to make adequate provision for (including by
means of a “cashless exercise” pursuant to a program developed under Regulation T as promulgated by the Federal Reserve Board to the extent permitted by the Company), any sums required to satisfy the federal, state, local and foreign tax
withholding obligations, if any, which arise in connection with the exercise of your Option in accordance with the withholding procedures established by the Company. Accordingly, you may not be able to exercise your Option even though the Option is
vested, and the Company shall have no obligation to issue shares of Common Stock subject to your Option, unless and until such obligations are satisfied. In the event that the amount of the Company’s withholding obligation in connection with
your Option was greater than the amount actually withheld by the Company, you agree to indemnify and hold the Company harmless from any failure by the Company to withhold the proper amount. 

6. TRANSFERABILITY. Except as otherwise provided in Section 4(e) of the Plan, your Option is not transferable,
except by will or by the applicable laws of descent and distribution, and is exercisable during your life only by you. 
 7.
CORPORATE TRANSACTION. Your Option is subject to the terms of any agreement governing a Corporate Transaction involving the Company, including, without limitation, a provision for the appointment of a stockholder
representative that is authorized to act on your behalf with respect to any escrow, indemnities and any contingent consideration. 

8. NO LIABILITY FOR TAXES. As a condition to
accepting the Option, you hereby (a) agree to not make any claim against the Company, or any of its Officers, Directors, Employees or Affiliates related to tax liabilities arising from the Option or other Company compensation and
(b) acknowledge that you were advised to consult with your own personal tax, financial and other legal advisors regarding the tax consequences of the Option and have either done so or knowingly and voluntarily declined to do so. Additionally,
you acknowledge that the Option is exempt from Section 409A only if the exercise price is at least equal to the “fair market value” of the Common Stock on the date of grant as determined by the Internal Revenue Service and there is no
other impermissible deferral of compensation associated with the Option. Additionally, as a condition to accepting the Option, you agree not make any claim against the Company, or any of its Officers, Directors, Employees or Affiliates in the event
that the Internal Revenue Service asserts that such exercise is less than the “fair market value” of the Common Stock on the date of grant as subsequently determined by the Internal Revenue Service. 

9. SEVERABILITY. If any part of this Option Agreement or the Plan is declared by any court
or governmental authority to be unlawful or invalid, such unlawfulness or invalidity will not invalidate any portion of this Option Agreement or the Plan not declared to be unlawful or invalid. Any Section of this Option Agreement (or part of such a
Section) so declared to be unlawful or invalid will, if possible, be construed in a manner which will give effect to the terms of such Section or part of a Section to the fullest extent possible while remaining lawful and valid 

  
 4 

 10. OTHER
DOCUMENTS. You hereby acknowledge receipt of or the right to receive a document providing the information required by Rule 428(b)(1) promulgated under the Securities Act, which includes the Prospectus.
In addition, you acknowledge receipt of the Company’s Trading Policy. 
 11.
QUESTIONS. If you have questions regarding these or any other terms and conditions applicable to your Option, including a summary of the applicable federal income tax consequences please see the
Prospectus. 
 * * * * 

  
 5 

 Non-Employee Director 

ATTACHMENT II 

2021 EQUITY INCENTIVE PLAN 

 Non-Employee Director 

ATTACHMENT III 

NOTICE OF EXERCISE 

 Non-Employee Director 

ADAGIO THERAPEUTICS, INC. 

2021 EQUITY INCENTIVE PLAN 

NOTICE OF EXERCISE 

 

			
	 ADAGIO THERAPEUTICS, INC.

303 WYMAN STREET, SUITE 300

WALTHAM, MA 02451
	  	Date of Exercise:
                                

 This constitutes notice to Adagio Therapeutics, Inc. (the “Company”) that I elect to
purchase the below number of shares of Common Stock of the Company (the “Shares”) by exercising my Option for the price set forth below. Capitalized terms not explicitly defined in this Notice of Exercise but defined in the
Stock Option Grant Notice, Stock Option Agreement or 2021 Equity Incentive Plan (the “Plan”) shall have the meanings set forth in the Stock Option Grant Notice, Stock Option Agreement or Plan, as applicable. Use of certain
payment methods is subject to Company and/or Committee consent and certain additional requirements set forth in the Stock Option Agreement and the Plan. 
  

					
	 Type of option:
	  	 	Nonstatutory	 
	 Date of Grant:
	  			
	 Number of Shares as to which Option is exercised:
	  			
	 Certificates to be issued in name of:
	  			
	 Total exercise price:
	  	$	                       	 
	 Cash, check, bank draft or money order delivered herewith:
	  	$	                       	 
	 Value of
                                         
   
 Shares delivered herewith:
	  	$	                       	 
	 Regulation T Program (cashless exercise)
	  	$	                       	 
	 Value of
                                         
   
 Shares pursuant to net exercise:
	  	$	                       	 

 By this exercise, I agree (i) to provide such additional documents as you may require
pursuant to the terms of the Plan and (ii) to satisfy the tax withholding obligations, if any, relating to the exercise of this Option as set forth in the Stock Option Agreement. 

 

	
	Very truly yours,
	
	              

 ADAGIO THERAPEUTICS, INC. 

RSU AWARD GRANT NOTICE 

(2021 EQUITY INCENTIVE PLAN) 

Adagio Therapeutics, Inc. (the “Company”) has awarded to you (the “Participant”) the number of restricted
stock units specified and on the terms set forth below in consideration of your services (the “RSU Award”). Your RSU Award is subject to all of the terms and conditions as set forth herein and in the Adagio Therapeutics, Inc.
2021 Equity Incentive Plan (the “Plan”) and the Award Agreement (the “Agreement”), which are attached hereto and incorporated herein in their entirety. Capitalized terms not explicitly defined herein
but defined in the Plan or the Agreement shall have the meanings set forth in the Plan or the Agreement. 
  

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

  

			
	Vesting Schedule:	  	[
                                        
                                         
               ].
		  	Notwithstanding the foregoing, vesting shall terminate upon the Participant’s termination of Continuous Service.
		
	Issuance Schedule:	  	One share of Common Stock will be issued at the time set forth in Section 5 of the Agreement for each restricted stock unit which vests.

 Participant Acknowledgements: By your signature below or by electronic acceptance or authentication in a form
authorized by the Company, you understand and agree that: 
  

	 	•	 	 The RSU Award is governed by this RSU Award Grant Notice (the “Grant Notice”), and the
provisions of the Plan and the Agreement, all of which are made a part of this document. Unless otherwise provided in the Plan, this Grant Notice and the Agreement (together, the “RSU Award Agreement”) may not be modified,
amended or revised except in a writing signed by you and a duly authorized officer of the Company. 

  

	 	•	 	 You have read and are familiar with the provisions of the Plan, the RSU Award Agreement and the Prospectus. In
the event of any conflict between the provisions in the RSU Award Agreement, or the Prospectus and the terms of the Plan, the terms of the Plan shall control. 

 

	 	•	 	 The RSU Award Agreement sets forth the entire understanding between you and the Company regarding the acquisition
of Common Stock and supersedes all prior oral and written agreements, promises and/or representations on that subject with the exception of: (i) other equity awards previously granted to you, and (ii) any written employment agreement, offer
letter, severance agreement, written severance plan or policy, or other written agreement between the Company and you in each case that specifies the terms that should govern this RSU Award. 

									
	ADAGIO THERAPEUTICS, INC.:	 		 	PARTICIPANT:
				
	By:	 	  
	 		 	  

		 	Signature	 		 		 	Signature
					
	Title:	 	  
	 		 	Date:	 	  

					
	Date:	 	  
	 		 		 	

 ATTACHMENTS: Award Agreement, 2021 Equity Incentive Plan 

 ATTACHMENT I 

AWARD AGREEMENT 

 ADAGIO THERAPEUTICS, INC. 

AWARD AGREEMENT 
 (2021
EQUITY INCENTIVE PLAN) 
 As reflected by your RSU Award Grant Notice (“Grant Notice”), Adagio Therapeutics,
Inc. (the “Company”) has granted you a RSU Award under the Adagio Therapeutics, Inc. 2021 Equity Incentive Plan (the “Plan”) for the number of restricted stock units as indicated in your Grant Notice
(the “RSU Award”). The terms of your RSU Award as specified in this Award Agreement for your RSU Award (this “Agreement”) and the Grant Notice constitute your “RSU Award
Agreement”. Defined terms not explicitly defined in this Agreement but defined in the Grant Notice or the Plan shall have the same definitions as in the Grant Notice or Plan, as applicable. 

The general terms applicable to your RSU Award are as follows: 

1. GOVERNING PLAN
DOCUMENT. Your RSU Award is subject to all the provisions of the Plan, including but not limited to the provisions in: 

(a) Section 6 of the Plan regarding the impact of a Capitalization Adjustment, dissolution, liquidation, or Corporate Transaction on
your RSU Award; 
 (b) Section 9(e) of the Plan regarding the Company’s retained rights to terminate your Continuous Service
notwithstanding the grant of the RSU Award; and 
 (c) Section 8 of the Plan regarding the tax consequences of your RSU
Award. 
 Your RSU Award is further subject to all interpretations, amendments, rules and regulations, which may from time to time be promulgated and
adopted pursuant to the Plan. In the event of any conflict between the RSU Award Agreement and the provisions of the Plan, the provisions of the Plan shall control. 

2. GRANT OF THE RSU AWARD.
This RSU Award represents your right to be issued on a future date the number of shares of the Company’s Common Stock that is equal to the number of restricted stock units indicated in the Grant Notice as modified to reflect any
Capitalization Adjustment and subject to your satisfaction of the vesting conditions set forth therein (the “Restricted Stock Units”). Any additional Restricted Stock
Units that become subject to the RSU Award pursuant to Capitalization Adjustments as set forth in the Plan and the provisions of Section 3 below, if any, shall be subject, in a manner determined by the Board, to the same forfeiture
restrictions, restrictions on transferability, and time and manner of delivery as applicable to the other Restricted Stock Units covered by your RSU Award. 

3. DIVIDENDS. You shall receive no benefit or adjustment to this RSU Award
with respect to any cash dividend, stock dividend or other distribution that does not result from a Capitalization Adjustment; provided, however, that this sentence will not apply with respect to any shares of Common Stock that are delivered to you
in connection with your RSU Award after such shares have been delivered to you. 
 4. WITHHOLDING
OBLIGATIONS. As further provided in Section 8 of the Plan, you hereby authorize withholding from payroll and any other amounts payable to you, and otherwise agree to make adequate provision for,
any sums required to satisfy the federal, state, local and foreign tax withholding obligations, if any, which arise in connection with your RSU Award (the “Withholding Obligation”) in accordance with the withholding
procedures established by the Company. Unless the Withholding Obligation is satisfied, the Company shall have no obligation to deliver to you any Common Stock in respect of the RSU Award. In the event the Withholding Obligation of the Company arises
prior to the delivery to you of Common Stock or it is determined after the delivery of Common Stock to you that the amount of the Withholding Obligation was greater than the amount withheld by the Company, you agree to indemnify and hold the Company
harmless from any failure by the Company to withhold the proper amount. 

  
 1. 

 5. DATE OF ISSUANCE. 

(a) The issuance of shares in respect of the Restricted Stock Units is intended to comply with Treasury Regulations Section 1.409A-1(b)(4) and will be construed and administered in such a manner. Subject to the satisfaction of the Withholding Obligation, if any, in the event one or more Restricted Stock Units vests, the
Company shall issue to you one (1) share of Common Stock for each Restricted Stock Unit that vests on the applicable vesting date(s) (subject to any adjustment under Section 3 above, and subject to any different provisions in the Grant
Notice). Each issuance date determined by this paragraph is referred to as an “Original Issuance Date.” 

(b) If the Original Issuance Date falls on a date that is not a business day, delivery shall instead occur on the next following
business day. In addition, if: 
 (i) the Original Issuance Date does not occur (1) during an “open window
period” applicable to you, as determined by the Company in accordance with the Company’s then-effective policy on trading in Company securities, or (2) on a date when you are otherwise permitted to sell shares of Common Stock on an
established stock exchange or stock market (including but not limited to under a previously established written trading plan that meets the requirements of Rule 10b5-1 under the Exchange Act and was entered
into in compliance with the Company’s policies (a “10b5-1 Arrangement)), and 

(ii) either (1) a Withholding Obligation does not apply, or (2) the Company decides, prior to the Original Issuance Date,
(A) not to satisfy the Withholding Obligation by withholding shares of Common Stock from the shares otherwise due, on the Original Issuance Date, to you under this Award, and (B) not to permit you to enter into a “same day sale”
commitment with a broker-dealer (including but not limited to a commitment under a 10b5-1 Arrangement) and (C) not to permit you to pay your Withholding Obligation in cash, 

then the shares that would otherwise be issued to you on the Original Issuance Date will not be delivered on such Original Issuance Date and will
instead be delivered on the first business day when you are not prohibited from selling shares of the Company’s Common Stock in the open public market, but in no event later than December 31 of the calendar year in which the Original
Issuance Date occurs (that is, the last day of your taxable year in which the Original Issuance Date occurs), or, if and only if permitted in a manner that complies with Treasury Regulations
Section 1.409A-1(b)(4), no later than the date that is the 15th day of the third calendar month of the applicable year following the year in which the shares of Common Stock under this Award are no longer
subject to a “substantial risk of forfeiture” within the meaning of Treasury Regulations Section 1.409A-1(d). 

(c) To the extent the RSU Award is a Non-Exempt RSU Award, the provisions of Section 11 of
the Plan shall apply. 
 6. TRANSFERABILITY. Except as otherwise provided
in the Plan, your RSU Award is not transferable, except by will or by the applicable laws of descent and distribution. 
 7.
CORPORATE TRANSACTION. Your RSU Award is subject to the terms of any agreement governing a Corporate Transaction involving the Company, including, without limitation, a
provision for the appointment of a stockholder representative that is authorized to act on your behalf with respect to any escrow, indemnities and any contingent consideration. 

8. NO LIABILITY FOR TAXES. As a condition to
accepting the RSU Award, you hereby (a) agree to not make any claim against the Company, or any of its Officers, Directors, Employees or Affiliates related to tax liabilities arising from the RSU Award or other Company compensation and
(b) acknowledge that you were advised to consult with your own personal tax, financial and other legal advisors regarding the tax consequences of the RSU Award and have either done so or knowingly and voluntarily declined to do so. 

  
 2. 

 9. SEVERABILITY. If any part of this Agreement
or the Plan is declared by any court or governmental authority to be unlawful or invalid, such unlawfulness or invalidity will not invalidate any portion of this Agreement or the Plan not declared to be unlawful or invalid. Any Section of this
Agreement (or part of such a Section) so declared to be unlawful or invalid will, if possible, be construed in a manner which will give effect to the terms of such Section or part of a Section to the fullest extent possible while remaining lawful
and valid. 
 10. OTHER DOCUMENTS. You hereby acknowledge
receipt of or the right to receive a document providing the information required by Rule 428(b)(1) promulgated under the Securities Act, which includes the Prospectus. In addition, you acknowledge receipt of the Company’s Trading Policy. 

11. QUESTIONS. If you have questions regarding these or any other terms and
conditions applicable to your RSU Award, including a summary of the applicable federal income tax consequences please see the Prospectus. 

  
 3. 

 Attachment II 

2021 EQUITY INCENTIVE PLANEX-10.3

 Exhibit 10.3 

ADAGIO THERAPEUTICS, INC. 

2021 EMPLOYEE STOCK PURCHASE PLAN 

ADOPTED BY THE BOARD OF DIRECTORS:
JULY 27, 2021 
 APPROVED BY THE STOCKHOLDERS:
JULY 29, 2021 
  

	1.	 GENERAL; PURPOSE. 

(a) The Plan provides a means by which Eligible Employees of the Company and certain Designated Companies may be given an opportunity to
purchase shares of Common Stock. The Plan permits the Company to grant a series of Purchase Rights to Eligible Employees under an Employee Stock Purchase Plan. In addition, the Plan permits the Company to grant a series of Purchase Rights to
Eligible Employees that do not meet the requirements of an Employee Stock Purchase Plan. 
 (b) The Plan includes two components: a
423 Component and a Non-423 Component. The Company intends (but makes no undertaking or representation to maintain) the 423 Component to qualify as an Employee Stock Purchase Plan. The provisions of the 423
Component, accordingly, will be construed in a manner that is consistent with the requirements of Section 423 of the Code. In addition, this Plan authorizes grants of Purchase Rights under the Non-423
Component that do not meet the requirements of an Employee Stock Purchase Plan. Except as otherwise provided in the Plan or determined by the Board, the Non-423 Component will operate and be administered in
the same manner as the 423 Component. In addition, the Company may make separate Offerings which vary in terms (provided that such terms are not inconsistent with the provisions of the Plan or the requirements of an Employee Stock Purchase Plan to
the extent the Offering is made under the 423 Component), and the Company will designate which Designated Company is participating in each separate Offering. 

(c) The Company, by means of the Plan, seeks to retain the services of Eligible Employees, to secure and retain the services of new
Employees and to provide incentives for such persons to exert maximum efforts for the success of the Company and its Related Corporations. 
  

	2.	 ADMINISTRATION. 

(a) The Board will administer the Plan unless and until the Board delegates administration of the Plan to a Committee or Committees, as
provided in Section 2(c). 
 (b) The Board will have the power, subject to, and within the limitations of, the express
provisions of the Plan: 
 (i) To determine how and when Purchase Rights will be granted and the provisions of each Offering (which
need not be identical). 
 (ii) To designate from time to time (A) which Related Corporations of the Company will be eligible to
participate in the Plan as Designated 423 Companies, (B) which Related Corporations or Affiliates will be eligible to participate in the Plan as Designated Non-423 Companies, (C) which Affiliates or
Related Corporations may be excluded from participation in the Plan, and (D) which Designated Companies will participate in each separate Offering (to the extent that the Company makes separate Offerings). 

(iii) To construe and interpret the Plan and Purchase Rights, and to establish, amend and revoke rules and regulations for its
administration. The Board, in the exercise of this power, may correct any defect, omission or inconsistency in the Plan, in a manner and to the extent it deems necessary or expedient to make the Plan fully effective. 

  
 1 

 (iv) To settle all controversies regarding the Plan and Purchase Rights granted under
the Plan. 
 (v) To suspend or terminate the Plan at any time as provided in Section 12. 

(vi) To amend the Plan at any time as provided in Section 12. 

(vii) Generally, to exercise such powers and to perform such acts as it deems necessary or expedient to promote the best interests of
the Company and its Related Corporations and to carry out the intent that the Plan be treated as an Employee Stock Purchase Plan with respect to the 423 Component. 

(viii) To adopt such rules, procedures and sub-plans as are necessary or appropriate to permit
or facilitate participation in the Plan by Employees who are foreign nationals or employed or located outside the United States. Without limiting the generality of, and consistent with, the foregoing, the Board specifically is authorized to adopt
rules, procedures, and sub-plans regarding, without limitation, eligibility to participate in the Plan, the definition of eligible “earnings,” handling and making of Contributions, 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 share issuances, any of
which may vary according to applicable requirements, and which, if applicable to a Designated Non-423 Company, do not have to comply with the requirements of Section 423 of the Code. 

(c) The Board may delegate some or all of the administration of the Plan to a Committee or Committees. If administration is delegated
to a Committee, the Committee will have, in connection with the administration of the Plan, the powers theretofore possessed by the Board that have been delegated to the Committee, including the power to delegate to a subcommittee any of the
administrative powers the Committee is authorized to exercise (and references in this Plan and any applicable Offering Document to the Board will thereafter be to the Committee or subcommittee), subject, however, to such resolutions, not
inconsistent with the provisions of the Plan, as may be adopted from time to time by the Board. Further, to the extent not prohibited by Applicable Law, the Board or Committee may, from time to time, delegate some or all of its authority under the
Plan to one or more officers of the Company or other persons or groups of persons as it deems necessary, appropriate or advisable under conditions or limitations that it may set at or after the time of the delegation. The Board may retain the
authority to concurrently administer the Plan with the Committee and may, at any time, revest in the Board some or all of the powers previously delegated. Whether or not the Board has delegated administration of the Plan to a Committee, the Board
will have the final power to determine all questions of policy and expediency that may arise in the administration of the Plan. 

(d) All determinations, interpretations and constructions made by the Board in good faith will not be subject to review by any person
and will be final, binding and conclusive on all persons. 
  

	3.	 SHARES OF COMMON STOCK SUBJECT
TO THE PLAN. 

 (a) Subject to the provisions of Section 11(a)
relating to Capitalization Adjustments, the maximum number of shares of Common Stock that may be issued under the Plan will not exceed 1,342,773 shares of Common Stock, plus the number of shares of Common Stock that are automatically added on
January 1st of each year for a period of up to ten years, commencing on January 1, 2022 and ending on (and including) January 1, 2031, in an amount equal to the lesser of (x) one percent (1%) of the total number of

  
 2 

 
shares of Common Stock outstanding on December 31st of the preceding calendar year, and (y) 2,685,546 shares of Common Stock. Notwithstanding the foregoing, the Board may act prior to the
first day of any calendar year to provide that there will be no January 1st increase in the share reserve for such calendar year or that the increase in the share reserve for such calendar year
will be a lesser number of shares of Common Stock than would otherwise occur pursuant to the preceding sentence. For the avoidance of doubt, up to the maximum number of shares of Common Stock reserved under this Section 3(a) may be used to
satisfy purchases of Common Stock under the 423 Component and any remaining portion of such maximum number of shares may be used to satisfy purchases of Common Stock under the Non-423 Component. 

(b) If any Purchase Right granted under the Plan terminates without having been exercised in full, the shares of Common Stock not
purchased under such Purchase Right will again become available for issuance under the Plan. 
 (c) The stock purchasable under the
Plan will be shares of authorized but unissued or reacquired Common Stock, including shares repurchased by the Company on the open market. 
  

	4.	 GRANT OF PURCHASE RIGHTS;
OFFERING. 

 (a) The Board may from time to time grant or provide for the grant of Purchase
Rights to Eligible Employees under an Offering (consisting of one or more Purchase Periods) on an Offering Date or Offering Dates selected by the Board. Each Offering will be in such form and will contain such terms and conditions as the Board will
deem appropriate, and with respect to the 423 Component, will comply with the requirement of Section 423(b)(5) of the Code that all Employees granted Purchase Rights will have the same rights and privileges. The terms and conditions of an
Offering shall be incorporated by reference into the Plan and treated as part of the Plan. The provisions of separate Offerings need not be identical, but each Offering will include (through incorporation of the provisions of this Plan by reference
in the document comprising the Offering or otherwise) the period during which the Offering will be effective, which period will not exceed 27 months beginning with the Offering Date, and the substance of the provisions contained in Sections 5
through 8, inclusive. 
 (b) If a Participant has more than one Purchase Right outstanding under the Plan, unless he or she otherwise
indicates in forms delivered to the Company or a third party designated by the Company (each, a “Company Designee”): (i) each form will apply to all of his or her Purchase Rights under the Plan, and (ii) a Purchase Right
with a lower exercise price (or an earlier-granted Purchase Right, if different Purchase Rights have identical exercise prices) will be exercised to the fullest possible extent before a Purchase Right with a higher exercise price (or a later-granted
Purchase Right if different Purchase Rights have identical exercise prices) will be exercised. 
 (c) The Board will have the
discretion to structure an Offering so that if the Fair Market Value of a share of Common Stock on the first Trading Day of a new Purchase Period within that Offering is less than or equal to the Fair Market Value of a share of Common Stock on the
Offering Date for that Offering, then (i) that Offering will terminate immediately as of that first Trading Day, and (ii) the Participants in such terminated Offering will be automatically enrolled in a new Offering beginning on the first
Trading Day of such new Purchase Period. 
  

	5.	 ELIGIBILITY. 

(a) Purchase Rights may be granted only to Employees of the Company or, as the Board may designate in accordance with Section 2(b),
to Employees of a Related Corporation or an Affiliate. Except as provided in Section 5(b) or as required by Applicable Law, an Employee will not be eligible to be granted Purchase Rights unless, on the Offering Date, the Employee has been in
the employ of the Company, the 

  
 3 

 
Related Corporation or the Affiliate, as the case may be, for such continuous period preceding such Offering Date as the Board may (unless prohibited by Applicable Law) require, but in no event
will the required period of continuous employment be equal to or greater than two years. In addition, the Board may provide that no Employee will be eligible to be granted Purchase Rights under the Plan unless, on the Offering Date, such
Employee’s customary employment with the Company, the Related Corporation or the Affiliate is more than 20 hours per week and more than five months per calendar year or such other criteria as the Board may determine consistent with
Section 423 of the Code with respect to the 423 Component. The Board may also exclude from participation in the Plan or any Offering Employees who are “highly compensated employees” (within the meaning of Section 423(b)(4)(D) of
the Code) of the Company or a Related Corporation or a subset of such highly compensated employees. 
 (b) The Board may provide that
each person who, during the course of an Offering, first becomes an Eligible Employee will, on a date or dates specified in the Offering which coincides with the day on which such person becomes an Eligible Employee or which occurs thereafter,
receive a Purchase Right under that Offering, which Purchase Right will thereafter be deemed to be a part of that Offering. Such Purchase Right will have the same characteristics as any Purchase Rights originally granted under that Offering, as
described herein, except that: 
 (i) the date on which such Purchase Right is granted will be the “Offering Date” of such
Purchase Right for all purposes, including determination of the exercise price of such Purchase Right; 
 (ii) the period of the
Offering with respect to such Purchase Right will begin on its Offering Date and end coincident with the end of such Offering; and 

(iii) the Board may provide that if such person first becomes an Eligible Employee within a specified period of time before the end of
the Offering, he or she will not receive any Purchase Right under that Offering. 
 (c) No Employee will be eligible for the grant of
any Purchase Rights under the 423 Component if, immediately after any such Purchase Rights are granted, such Employee owns stock possessing five percent or more of the total combined voting power or value of all classes of stock of the Company or of
any Related Corporation. For purposes of this Section 5(c), the rules of Section 424(d) of the Code will apply in determining the stock ownership of any Employee, and stock which such Employee may purchase under all outstanding Purchase
Rights and options will be treated as stock owned by such Employee. 
 (d) As specified by Section 423(b)(8) of the Code, an
Eligible Employee may be granted Purchase Rights under the 423 Component only if such Purchase Rights, together with any other rights granted under all Employee Stock Purchase Plans of the Company and any Related Corporations, do not permit such
Eligible Employee’s rights to purchase stock of the Company or any Related Corporation to accrue at a rate which, when aggregated, exceeds $25,000 of Fair Market Value of such stock (determined at the time such rights are granted, and which,
with respect to the Plan, will be determined as of their respective Offering Dates) for each calendar year in which such rights are outstanding at any time. 

(e) Officers of the Company and any Designated Company, if they are otherwise Eligible Employees, will be eligible to participate in
Offerings under the Plan. Notwithstanding the foregoing, the Board may (unless prohibited by Applicable Law) provide in an Offering that Employees who are highly compensated Employees within the meaning of Section 423(b)(4)(D) of the Code will
not be eligible to participate. 

  
 4 

 (f) Notwithstanding anything in this Section 5 to the contrary, in the case of
an Offering under the Non-423 Component, an Eligible Employee (or group of Eligible Employees) may be excluded from participation in the Plan or an Offering if the Board has determined, in its sole discretion,
that participation of such Eligible Employee(s) is not advisable or practical for any reason. 
  

	6.	 PURCHASE RIGHTS; PURCHASE PRICE.

 (a) On each Offering Date, each Eligible Employee, pursuant to an Offering made under the Plan, will be
granted a Purchase Right to purchase up to that number of shares of Common Stock purchasable either with a percentage of earnings or with a maximum dollar amount, as designated by the Board during the period that begins on the Offering Date (or such
later date as the Board determines for a particular Offering) and ends on the date stated in the Offering, which date will be no later than the end of the Offering. 

(b) The Board will establish one or more Purchase Dates during an Offering on which Purchase Rights granted for that Offering will be
exercised and shares of Common Stock will be purchased in accordance with such Offering. 
 (c) In connection with each Offering made
under the Plan, the Board may specify (i) a maximum number of shares of Common Stock that may be purchased by any Participant on any Purchase Date during such Offering, (ii) a maximum aggregate number of shares of Common Stock that may be
purchased by all Participants pursuant to such Offering and/or (iii) a maximum aggregate number of shares of Common Stock that may be purchased by all Participants on any Purchase Date under the Offering. If the aggregate purchase of shares of
Common Stock issuable upon exercise of Purchase Rights granted under the Offering would exceed any such maximum aggregate number, then, in the absence of any Board action otherwise, a pro rata (based on each Participant’s accumulated
Contributions) allocation of the shares of Common Stock (rounded down to the nearest whole share) available will be made in as nearly a uniform manner as will be practicable and equitable. 

(d) The purchase price of shares of Common Stock acquired pursuant to Purchase Rights will be specified by the Board prior to
commencement of an Offering and will not be less than the lesser of: 
 (i) an amount equal to 85% of the Fair Market Value of the
shares of Common Stock on the Offering Date; or 
 (ii) an amount equal to 85% of the Fair Market Value of the shares of Common Stock
on the applicable Purchase Date. 
  

	7.	 PARTICIPATION; WITHDRAWAL; TERMINATION.

 (a) An Eligible Employee may elect to participate in an Offering and authorize payroll deductions as the
means of making Contributions by completing and delivering to the Company or a Company Designee, within the time specified in the Offering, an enrollment form provided by the Company or Company Designee. The enrollment form will specify the amount
of Contributions not to exceed the maximum amount specified by the Board. Each Participant’s Contributions will be credited to a bookkeeping account for such Participant under the Plan and will be deposited with the general funds of the Company
except where Applicable Law requires that Contributions be deposited with a third party. If permitted in the Offering, a Participant may begin such Contributions with the first payroll occurring on or after the Offering Date (or, in the case of a
payroll date that occurs after the end of the prior Offering but before the Offering Date of the next new Offering, Contributions from such payroll will be included in the new Offering). If permitted in the Offering, a Participant may thereafter
reduce (including to zero) or 

  
 5 

 
increase his or her Contributions. If required under Applicable Law or if specifically provided in the Offering and to the extent permitted by Section 423 of the Code with respect to the 423
Component, in addition to or instead of making Contributions by payroll deductions, a Participant may make Contributions through payment by cash, check or wire transfer prior to a Purchase Date. 

(b) During an Offering, a Participant may cease making Contributions and withdraw from the Offering by delivering to the Company or a
Company Designee a withdrawal form provided by the Company. The Company may impose a deadline before a Purchase Date for withdrawing. Upon such withdrawal, such Participant’s Purchase Right in that Offering will immediately terminate and the
Company will distribute as soon as practicable to such Participant all of his or her accumulated but unused Contributions and such Participant’s Purchase Right in that Offering shall thereupon terminate. A Participant’s withdrawal from
that Offering will have no effect upon his or her eligibility to participate in any other Offerings under the Plan, but such Participant will be required to deliver a new enrollment form to participate in subsequent Offerings. 

(c) Unless otherwise required by Applicable Law, Purchase Rights granted pursuant to any Offering under the Plan will terminate
immediately if the Participant either (i) is no longer an Employee for any reason or for no reason (subject to any post-employment participation period required by Applicable Law) or (ii) is otherwise no longer eligible to participate. The
Company will distribute as soon as practicable to such individual all of his or her accumulated but unused Contributions. 
 (d)
Unless otherwise determined by the Board, a Participant whose employment transfers or whose employment terminates with an immediate rehire (with no break in service) by or between the Company and a Designated Company or between Designated Companies
will not be treated as having terminated employment for purposes of participating in the Plan or an Offering; however, if a Participant transfers from an Offering under the 423 Component to an Offering under the
Non-423 Component, the exercise of the Participant’s Purchase Right will be qualified under the 423 Component only to the extent such exercise complies with Section 423 of the Code. If a Participant
transfers from an Offering under the Non-423 Component to an Offering under the 423 Component, the exercise of the Purchase Right will remain non-qualified under the Non-423 Component. The Board may establish different and additional rules governing transfers between separate Offerings within the 423 Component and between Offerings under the 423 Component and Offerings under the
Non-423 Component. 
 (e) During a Participant’s lifetime, Purchase Rights will be
exercisable only by such Participant. Purchase Rights are not transferable by a Participant, except by will, by the laws of descent and distribution, or, if permitted by the Company, by a beneficiary designation as described in Section 10. 

(f) Unless otherwise specified in the Offering or as required by Applicable Law, the Company will have no obligation to pay interest on
Contributions. 
  

	8.	 EXERCISE OF PURCHASE RIGHTS.

 (a) On each Purchase Date, each Participant’s accumulated Contributions will be applied to the purchase
of shares of Common Stock, up to the maximum number of shares of Common Stock permitted by the Plan and the applicable Offering, at the purchase price specified in the Offering. No fractional shares will be issued unless specifically provided for in
the Offering. 
 (b) Unless otherwise provided in the Offering, if any amount of accumulated Contributions remains in a
Participant’s account after the purchase of shares of Common Stock and such remaining amount is less than the amount required to purchase one share of Common Stock on the final Purchase Date of an Offering, then such remaining amount will be
held in such Participant’s account for the purchase of 

  
 6 

 
shares of Common Stock under the next Offering under the Plan, unless such Participant withdraws from or is not eligible to participate in such next Offering, in which case such amount will be
distributed to such Participant after the final Purchase Date without interest (unless the payment of interest is otherwise required by Applicable Law). If the amount of Contributions remaining in a Participant’s account after the purchase of
shares of Common Stock is at least equal to the amount required to purchase one (1) whole share of Common Stock on the final Purchase Date of an Offering, then such remaining amount will be distributed in full to such Participant after the
final Purchase Date of such Offering without interest (unless otherwise required by Applicable Law). 
 (c) No Purchase Rights may be
exercised to any extent unless the shares of Common Stock to be issued upon such exercise under the Plan are covered by an effective registration statement pursuant to the Securities Act and the Plan is in material compliance with all applicable
U.S. federal and state, foreign and other securities, exchange control and other laws applicable to the Plan. If on a Purchase Date the shares of Common Stock are not so registered or the Plan is not in such compliance, no Purchase Rights will be
exercised on such Purchase Date, and, subject to Section 423 of the Code with respect to the 423 Component, the Purchase Date will be delayed until the shares of Common Stock are subject to such an effective registration statement and the Plan
is in material compliance, except that the Purchase Date will in no event be more than 27 months from the Offering Date. If, on the Purchase Date, as delayed to the maximum extent permissible, the shares of Common Stock are not registered and the
Plan is not in material compliance with all Applicable Laws, as determined by the Company in its sole discretion, no Purchase Rights will be exercised and all accumulated but unused Contributions will be distributed to the Participants without
interest (unless the payment of interest is otherwise required by Applicable Law). 
  

	9.	 COVENANTS OF THE COMPANY.

 The Company will seek to obtain from each U.S. federal or state, foreign or other regulatory commission, agency or
other Governmental Body having jurisdiction over the Plan such authority as may be required to grant Purchase Rights and issue and sell shares of Common Stock thereunder unless the Company determines, in its sole discretion, that doing so is not
practical or would cause the Company to incur costs that are unreasonable. If, after commercially reasonable efforts, the Company is unable to obtain the authority that counsel for the Company deems necessary for the grant of Purchase Rights or the
lawful issuance and sale of Common Stock under the Plan, and at a commercially reasonable cost, the Company will be relieved from any liability for failure to grant Purchase Rights and/or to issue and sell Common Stock upon exercise of such Purchase
Rights. 
  

	10.	 DESIGNATION OF BENEFICIARY. 

(a) The Company may, but is not obligated to, permit a Participant to submit a form designating a beneficiary who will receive any
shares of Common Stock and/or Contributions from the Participant’s account under the Plan if the Participant dies before such shares and/or Contributions are delivered to the Participant. The Company may, but is not obligated to, permit the
Participant to change such designation of beneficiary. Any such designation and/or change must be on a form approved by the Company. 

(b) If a Participant dies, and in the absence of a valid beneficiary designation, the Company will deliver any shares of Common Stock
and/or Contributions to the executor or administrator of the estate of the Participant. If no executor or administrator has been appointed (to the knowledge of the Company), the Company, in its sole discretion, may deliver such shares of Common
Stock and/or Contributions, without interest (unless the payment of interest is otherwise required by Applicable Law), to the Participant’s spouse, dependents or relatives, or if no spouse, dependent or relative is known to the Company, then to
such other person as the Company may designate. 

  
 7 

	11.	 ADJUSTMENTS UPON CHANGES IN
COMMON STOCK; CORPORATE TRANSACTIONS. 

 (a) In the
event of a Capitalization Adjustment, the Board will appropriately and proportionately adjust: (i) the class(es) and maximum number of securities subject to the Plan pursuant to Section 3(a), (ii) the class(es) and maximum number of
securities by which the share reserve is to increase automatically each year pursuant to Section 3(a), (iii) the class(es) and number of securities subject to, and the purchase price applicable to outstanding Offerings and Purchase Rights, and
(iv) the class(es) and number of securities that are the subject of the purchase limits under each ongoing Offering. The Board will make these adjustments, and its determination will be final, binding and conclusive. 

(b) In the event of a Corporate Transaction, then: (i) any surviving corporation or acquiring corporation (or the surviving or
acquiring corporation’s parent company) may assume or continue outstanding Purchase Rights or may substitute similar rights (including a right to acquire the same consideration paid to the stockholders in the Corporate Transaction) for
outstanding Purchase Rights, or (ii) if any surviving or acquiring corporation (or its parent company) does not assume or continue such Purchase Rights or does not substitute similar rights for such Purchase Rights, then the
Participants’ accumulated Contributions will be used to purchase shares of Common Stock (rounded down to the nearest whole share) within ten business days (or such other period specified by the Board) prior to the Corporate Transaction under
the outstanding Purchase Rights, and the Purchase Rights will terminate immediately after such purchase. 
  

	12.	 AMENDMENT, TERMINATION OR SUSPENSION
OF THE PLAN. 

 (a) The Board may amend the Plan at any time in any
respect the Board deems necessary or advisable. However, except as provided in Section 11(a) relating to Capitalization Adjustments, stockholder approval will be required for any amendment of the Plan for which stockholder approval is required
by Applicable Law. 
 (b) The Board may suspend or terminate the Plan at any time. No Purchase Rights may be granted under the Plan
while the Plan is suspended or after it is terminated. 
 (c) Any benefits, privileges, entitlements and obligations under any
outstanding Purchase Rights granted before an amendment, suspension or termination of the Plan will not be materially impaired by any such amendment, suspension or termination except (i) with the consent of the person to whom such Purchase
Rights were granted, (ii) as necessary to facilitate compliance with any laws, listing requirements, or governmental regulations (including, without limitation, the provisions of Section 423 of the Code and the regulations and other
interpretive guidance issued thereunder relating to Employee Stock Purchase Plans) including without limitation any such regulations or other guidance that may be issued or amended after the date the Plan is adopted by the Board, or (iii) as
necessary to obtain or maintain favorable tax, listing, or regulatory treatment. To be clear, the Board may amend outstanding Purchase Rights without a Participant’s consent if such amendment is necessary to ensure that the Purchase Right
and/or the Plan complies with the requirements of Section 423 of the Code with respect to the 423 Component or with respect to other Applicable Laws. Notwithstanding anything in the Plan or any Offering Document to the contrary, the Board will
be entitled to: (i) establish the exchange ratio applicable to amounts withheld in a currency other than U.S. dollars; (ii) permit Contributions in excess of the amount designated by a Participant in order to adjust for mistakes in the
Company’s processing of properly completed Contribution elections; (iii) 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 amounts withheld from the Participant’s Contributions; (iv) amend any outstanding Purchase Rights or clarify any ambiguities regarding the terms of any Offering to enable the Purchase Rights to
qualify under and/or comply with Section 423 of the Code with respect to the 423 

  
 8 

 
Component; and (v) establish other limitations or procedures as the Board determines in its sole discretion advisable that are consistent with the Plan. The actions of the Board pursuant to
this paragraph will not be considered to alter or impair any Purchase Rights granted under an Offering as they are part of the initial terms of each Offering and the Purchase Rights granted under each Offering. 

 

	13.	 TAX QUALIFICATION; TAX WITHHOLDING.

 (a) Although the Company may endeavor to (i) qualify a Purchase Right for special tax treatment under
the laws of the United States or jurisdictions outside of the United States or (ii) avoid adverse tax treatment, the Company makes no representation to that effect and expressly disavows any covenant to maintain special or to avoid unfavorable
tax treatment, notwithstanding anything to the contrary in this Plan. The Company will be unconstrained in its corporate activities without regard to the potential negative tax impact on Participants. 

(b) Each Participant will make arrangements, satisfactory to the Company and any applicable Related Corporation, to enable the Company
or the Related Corporation to fulfill any withholding obligation for Tax-Related Items. Without limitation to the foregoing, in the Company’s sole discretion and subject to Applicable Law, such
withholding obligation may be satisfied in whole or in part by (i) withholding from the Participant’s salary or any other cash payment due to the Participant from the Company or a Related Corporation; (ii) withholding from the
proceeds of the sale of shares of Common Stock acquired under the Plan, either through a voluntary sale or a mandatory sale arranged by the Company; or (iii) any other method deemed acceptable by the Board. The Company shall not be required to
issue any shares of Common Stock under the Plan until such obligations are satisfied. 
 (c) The 423 Component is exempt from the
application of Section 409A of the Code, and any ambiguities herein shall be interpreted to so be exempt from Section 409A of the Code. The Non-423 Component is intended to be exempt from the
application of Section 409A of the Code under the short-term deferral exception and any ambiguities shall be construed and interpreted in accordance with such intent. In furtherance of the foregoing and notwithstanding any provision in the Plan
to the contrary, if the Committee determines that an option granted under the Plan may be subject to Section 409A of the Code or that any provision in the Plan would cause an option under the Plan to be subject to Section 409A, the
Committee may amend the terms of the Plan and/or of an outstanding option granted under the Plan, or take such other action the Committee 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 of the Code, but only to the extent any such amendments or action by the Committee would not violate
Section 409A of the Code. Notwithstanding the foregoing, the Company shall have no liability to a participant or any other party if the option under the Plan that is intended to be exempt from or compliant with Section 409A of the Code is
not so exempt or compliant or for any action taken by the Committee with respect thereto. 
  

	14.	 EFFECTIVE DATE OF PLAN.

 The Plan will become effective immediately prior to and contingent upon the IPO Date. No Purchase Rights will be
exercised unless and until the Plan has been approved by the stockholders of the Company, which approval must be within 12 months before or after the date the Plan is adopted (or if required under Section 12(a) above, materially amended) by the
Board. 
  

	15.	 MISCELLANEOUS PROVISIONS. 

(a) Proceeds from the sale of shares of Common Stock pursuant to Purchase Rights will constitute general funds of the Company. 

  
 9 

 (b) A Participant will not be deemed to be the holder of, or to have any of the
rights of a holder with respect to, shares of Common Stock subject to Purchase Rights unless and until the Participant’s shares of Common Stock acquired upon exercise of Purchase Rights are recorded in the books of the Company (or its transfer
agent). 
 (c) The Plan and Offering do not constitute an employment contract. Nothing in the Plan or in the Offering will in any way
alter the at will nature of a Participant’s employment or amend a Participant’s employment contract, if applicable, or be deemed to create in any way whatsoever any obligation on the part of any Participant to continue in the employ of the
Company or a Related Corporation or an Affiliate, or on the part of the Company, a Related Corporation or an Affiliate to continue the employment of a Participant. 

(d) The provisions of the Plan will be governed by the laws of the State of Delaware without resort to that state’s conflicts of
laws rules. 
 (e) If any particular provision of the Plan is found to be invalid or otherwise unenforceable, such provision will not
affect the other provisions of the Plan, but the Plan will be construed in all respects as if such invalid provision were omitted. 

(f) If any provision of the Plan does not comply with Applicable Law, such provision shall be construed in such a manner as to comply
with Applicable Law. 
  

	16.	 DEFINITIONS. 

As used in the Plan, the following definitions will apply to the capitalized terms indicated below: 

(a) “423 Component” means the part of the Plan, which excludes the
Non-423 Component, pursuant to which Purchase Rights that satisfy the requirements for an Employee Stock Purchase Plan may be granted to Eligible Employees. 

(b) “Affiliate” means any entity, other than a Related Corporation, whether now or subsequently established,
which is at the time of determination, a “parent” or “subsidiary” of the Company as such terms are defined in Rule 405 promulgated under the Securities Act. The Board may determine the time or times at which “parent” or
“subsidiary” status is determined within the foregoing definition. 
 (c) “Applicable Law” means
shall mean the Code and any applicable securities, federal, state, foreign, material local or municipal or other law, statute, constitution, principle of common law, resolution, ordinance, code, edict, decree, rule, listing rule, regulation,
judicial decision, ruling or requirement issued, enacted, adopted, promulgated, implemented or otherwise put into effect by or under the authority of any Governmental Body (or under the authority of the New York Stock Exchange, NASDAQ Stock Market
or the Financial Industry Regulatory Authority). 
 (d) “Board” means the Board of Directors of the
Company. 
 (e) “Capitalization Adjustment” means any change that is made in, or other events that occur with
respect to, the Common Stock subject to the Plan or subject to any Purchase Right after the date the Plan is adopted by the Board without the receipt of consideration by the Company through merger, consolidation, reorganization, recapitalization,
reincorporation, stock dividend, dividend in property other than cash, large nonrecurring cash dividend, stock split, liquidating dividend, combination of shares, exchange of shares, change in corporate structure or other similar equity
restructuring transaction, as that term is used in Financial Accounting Standards Board Accounting Standards Codification Topic 718 (or any successor thereto). Notwithstanding the foregoing, the conversion of any convertible securities of the
Company will not be treated as a Capitalization Adjustment. 

  
 10 

 (f) “Code” means the U.S. Internal Revenue Code of
1986, as amended, including any applicable regulations and guidance thereunder. 
 (g) “Committee”
means a committee of one or more members of the Board to whom authority has been delegated by the Board in accordance with Section 2(c). 

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

(i) “Company” means Adagio Therapeutics, Inc., a Delaware corporation. 

(j) “Contributions” means the payroll deductions and other additional payments specifically provided for in the
Offering that a Participant contributes to fund the exercise of a Purchase Right. A Participant may make additional payments into his or her account if specifically provided for in the Offering, and then only if the Participant has not already had
the maximum permitted amount withheld during the Offering through payroll deductions and, with respect to the 423 Component, to the extent permitted by Section 423. 

(k) “Corporate Transaction” means the consummation, in a single transaction or in a series of related
transactions, of any one or more of the following events: 
 (i) a sale or other disposition of all or substantially all, as
determined by the Board in its sole discretion, of the consolidated assets of the Company and its subsidiaries; 
 (ii) a sale or
other disposition of more than 50% of the outstanding securities of the Company; 
 (iii) a merger, consolidation or similar
transaction following which the Company is not the surviving corporation; or 
 (iv) a merger, consolidation or similar transaction
following which the Company is the surviving corporation but the shares of Common Stock outstanding immediately preceding the merger, consolidation or similar transaction are converted or exchanged by virtue of the merger, consolidation or similar
transaction into other property, whether in the form of securities, cash or otherwise. 
 (l) “Designated 423
Company” means any Related Corporation selected by the Board as participating in the 423 Component. 
 (m)
“Designated Company” means any Designated Non-423 Corporation or Designated 423 Company, provided, however, that at any given time, a Related Corporation participating in the 423
Component shall not be a Related Corporation participating in the Non-423 Component. 
 (n)
“Designated Non-423 Company” means any Related Corporation or Affiliate selected by the Board as participating in the Non-423 Component. 

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

  
 11 

 (p) “Eligible Employee” means an Employee who meets
the requirements set forth in the document(s) governing the Offering for eligibility to participate in the Offering, provided that such Employee also meets the requirements for eligibility to participate set forth in the Plan. 

(q) “Employee” means any person, including an Officer or Director, who is “employed” for
purposes of Section 423(b)(4) of the Code by the Company or a Related Corporation or solely with respect to the Non-423 Component, an Affiliate. However, service solely as a Director, or payment of a fee
for such services, will not cause a Director to be considered an “Employee” for purposes of the Plan. 
 (r)
“Employee Stock Purchase Plan” means a plan that grants Purchase Rights intended to be options issued under an “employee stock purchase plan,” as that term is defined in Section 423(b) of the Code. 

(s) “Exchange Act” means the U.S. Securities Exchange Act of 1934, as amended and the rules and
regulations promulgated thereunder. 
 (t) “Fair Market Value” means, as of any date, the value of the Common
Stock determined as follows: 
 (i) If the Common Stock is listed on any established stock exchange or traded on any established
market, the Fair Market Value of a share of Common Stock will be, unless otherwise determined by the Board, the closing sales price for such stock as quoted on such exchange or market (or the exchange or market with the greatest volume
of trading in the Common Stock) on the date of determination, as reported in such source as the Board deems reliable. Unless otherwise provided by the Board, if there is no closing sales price for the Common Stock on the date of
determination, then the Fair Market Value will be the closing sales price on the last preceding date for which such quotation exists. 

(ii) In the absence of such markets for the Common Stock, the Fair Market Value will be determined by the Board in good faith in
compliance with Applicable Laws and regulations and, to the extent applicable as determined in the sole discretion of the Board, in a manner that complies with Sections 409A of the Code 

(iii) Notwithstanding the foregoing, for any Offering that commences on the IPO Date, the Fair Market Value of the shares of Common
Stock on the Offering Date will be the price per share at which shares are first sold to the public in the Company’s initial public offering as specified in the final prospectus for that initial public offering. 

(u) “Governmental Body” means any: (a) nation, state, commonwealth, province,
territory, county, municipality, district or other jurisdiction of any nature; (b) federal, state, local, municipal, foreign or other government; (c) governmental or regulatory body, or quasi-governmental body of any nature (including any
governmental division, department, administrative agency or bureau, commission, authority, instrumentality, official, ministry, fund, foundation, center, organization, unit, body or entity and any court or other tribunal, and for the avoidance of
doubt, any tax authority) or other body exercising similar powers or authority; or (d) self-regulatory organization (including the New York Stock Exchange, the NASDAQ Stock Market and the Financial Industry Regulatory Authority). 

(v) “IPO Date” means the date of the underwriting agreement between the Company and the underwriter(s) managing
the initial public offering of the Common Stock, pursuant to which the Common Stock is priced for the initial public offering. 

  
 12 

 (w) “Non-423 Component” means the
part of the Plan, which excludes the 423 Component, pursuant to which Purchase Rights that are not intended to satisfy the requirements for an Employee Stock Purchase Plan may be granted to Eligible Employees. 

(x) “Offering” means the grant to Eligible Employees of Purchase Rights, with the exercise of those
Purchase Rights automatically occurring at the end of one or more Purchase Periods. The terms and conditions of an Offering will generally be set forth in the “Offering Document” approved by the Board for that Offering. 

(y) “Offering Date” means a date selected by the Board for an Offering to commence. 

(z) “Officer” means a person who is an officer of the Company or a Related Corporation within the
meaning of Section 16 of the Exchange Act. 
 (aa) “Participant” means an Eligible Employee who
holds an outstanding Purchase Right. 
 (bb) “Plan” means this Adagio Therapeutics, Inc. 2021 Employee
Stock Purchase Plan, as amended from time to time, including both the 423 Component and the Non-423 Component. 

(cc) “Purchase Date” means one or more dates during an Offering selected by the Board on which Purchase
Rights will be exercised and on which purchases of shares of Common Stock will be carried out in accordance with such Offering. 

(dd) “Purchase Period” means a period of time specified within an Offering, generally beginning on the Offering
Date or on the first Trading Day following a Purchase Date, and ending on a Purchase Date. An Offering may consist of one or more Purchase Periods. 

(ee) “Purchase Right” means an option to purchase shares of Common Stock granted pursuant to the Plan.

 (ff) “Related Corporation” means any “parent corporation” or “subsidiary
corporation” of the Company whether now or subsequently established, as those terms are defined in Sections 424(e) and (f), respectively, of the Code. 

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

(hh) “Tax-Related Items” means any income tax, social insurance,
payroll tax, fringe benefit tax, payment on account or other tax-related items arising out of or in relation to a Participant’s participation in the Plan, including, but not limited to, the exercise of a
Purchase Right and the receipt of shares of Common Stock or the sale or other disposition of shares of Common Stock acquired under the Plan. 

(ii) “Trading Day” means any day on which the exchange(s) or market(s) on which shares of Common Stock
are listed, including but not limited to the New York Stock Exchange, Nasdaq Global Select Market, the Nasdaq Global Market, the Nasdaq Capital Market or any successors thereto, is open for trading. 

  
 13

Source: [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00331-of-00352.parquet"}, [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00331-of-00352.parquet"}]]