EX-10.3





 EXHIBIT 10.3 

HEALTH SCIENCES ACQUISITIONS CORPORATION 

2019 EQUITY INCENTIVE PLAN 

ADOPTED BY THE BOARD OF DIRECTORS:
DECEMBER 16, 2019 
 APPROVED BY THE SHAREHOLDERS:
DECEMBER 16, 2019 
 EFFECTIVE DATE: DECEMBER 18, 2019 

1. GENERAL. 

(a) Eligible Award Recipients. Employees, Directors and Consultants are eligible to receive Awards. 

(b) Available Awards. The Plan provides for the grant of the following types of Awards: (i) Incentive Stock Options,
(ii) Nonstatutory Stock Options, (iii) Stock Appreciation Rights, (iv) Restricted Stock Awards, (v) Restricted Stock Unit Awards, (vi) Performance Stock Awards, (vii) Performance Cash Awards, and (viii) Other Stock
Awards. 
 (c) Purpose. The Plan, through the granting of Awards, is intended to help the Company and its Affiliates secure and
retain the services of eligible award recipients, provide incentives for such persons to exert maximum efforts for the success of the Company and any Affiliate and provide a means by which the eligible recipients may benefit from increases in value
of the Common Stock. 
 2. ADMINISTRATION. 

(a) Administration by Board. The Board will administer the Plan. The Board may delegate administration of the Plan to a Committee or
Committees, as provided in Section 2(c). 
 (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: (A) who will be granted Awards; (B) when and how
each Award will be granted; (C) what type of Award will be granted; (D) the provisions of each Award (which need not be identical), including when a person will be permitted to exercise or otherwise receive cash or Common Stock under the
Award; (E) the number of shares of Common Stock subject to, or the cash value of, an Award; and (F) the Fair Market Value applicable to an Award. 

(ii) To construe and interpret the Plan and Awards granted under it, and to establish, amend and revoke rules and regulations for
administration of the Plan and Awards. The Board, in the exercise of these powers, may correct any defect, omission or inconsistency in the Plan or in any Award Agreement or in the written terms of a Performance


  
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Cash Award, 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, in whole or in part, the time at which an Award may be exercised or vest (or at which cash or shares of Common
Stock may be issued). 
 (v) To suspend or terminate the Plan at any time. Except as otherwise provided in the Plan or an Award
Agreement, suspension or termination of the Plan will not impair a Participant’s rights under his or her then-outstanding Award without his or her written consent, except as provided in subsection (viii) below. 

(vi) To amend the Plan in any respect the Board deems necessary or advisable, including, without limitation, by adopting amendments
relating to Incentive Stock Options and certain nonqualified deferred compensation under Section 409A of the Code and/or to make the Plan or Awards granted under the Plan compliant with the requirements for Incentive Stock Options or exempt
from or compliant with the requirements for nonqualified deferred compensation under Section 409A of the Code, subject to the limitations, if any, of applicable law. However, if required by applicable law or listing requirements, and except as
provided in Section 9(a) relating to Capitalization Adjustments, the Company will seek shareholder approval of any amendment of the Plan that: (A) materially increases the number of shares of Common Stock available for issuance under the
Plan, (B) materially expands the class of individuals eligible to receive Awards under the Plan, (C) materially increases the benefits accruing to Participants under the Plan, (D) materially reduces the price at which shares of Common
Stock may be issued or purchased under the Plan, (E) materially extends the term of the Plan, or (F) materially expands the types of Awards available for issuance under the Plan. Except as otherwise provided in the Plan or an Award
Agreement, no amendment of the Plan will materially impair a Participant’s rights under an outstanding Award unless (1) the Company requests the consent of the affected Participant, and (2) such Participant consents in writing. 

(vii) To submit any amendment to the Plan for shareholder approval, including, but not limited to, amendments to the Plan intended to
satisfy the requirements of (A) Section 422 of the Code regarding Incentive Stock Options, or (B) Rule 16b-3. 

(viii) 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 impaired by any such amendment unless: (A) the Company requests the consent of the affected Participant, and (B) such Participant consents in writing. Notwithstanding the foregoing,
(1) a Participant’s rights will not be deemed to have been 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, and
(2) subject to the limitations of applicable law, if any, the Board may amend the terms of any one or more Awards without the affected Participant’s consent (A) to 

  
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maintain the qualified status of the Award as an Incentive Stock Option under Section 422 of the Code; (B) to change the terms of an Incentive Stock Option, if such change results in
impairment of the Stock Award solely because it impairs the qualified status of the Stock Award as an Incentive Stock Option under Section 422 of the Code; (C) to clarify the manner of exemption from, or to bring the Award into compliance
with, Section 409A of the Code; or (D) to comply with other applicable laws or listing requirements. 
 (ix) 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. 

(x) To adopt such procedures and sub-plans as are necessary or appropriate to permit
participation in the Plan by 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 that
are required for compliance with the laws of the relevant foreign jurisdiction). 
 (xi) To effect, with the consent of any
adversely affected Participant, (A) the reduction of the exercise, purchase or strike price of any outstanding Award; (B) the cancellation of any outstanding Stock Award and the grant in substitution therefor of a new (1) Option or
SAR, (2) Restricted Stock Award, (3) Restricted Stock Unit Award, (4) Other Stock Award, (5) cash and/or (6) other valuable consideration determined by the Board, in its sole discretion, with any such substituted award
(x) covering the same or a different number of shares of Common Stock as the cancelled Stock Award and (y) granted under the Plan or another equity or compensatory plan of the Company; or (C) 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 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, as applicable). Any delegation of administrative
powers will be reflected in resolutions, not inconsistent with the provisions of the Plan, adopted from time to time by the Board or Committee (as applicable). 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. 
 (ii) Rule
16b-3 Compliance. The Committee may consist solely of two or more Non-Employee Directors, in accordance with Rule 16b-3. 

(d) Delegation to an Officer. The Board may delegate to one (1) 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, 

  
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other Stock Awards) and, to the extent permitted by applicable law, the terms of such Stock Awards, and (ii) determine the number of shares of Common Stock to be subject to such Stock Awards
granted to such Employees; provided, however, that the Board resolutions regarding such delegation will specify the total number of shares of Common Stock that may be subject to the Stock Awards granted by such Officer and that such Officer may not
grant a Stock Award to himself or herself. Any such Stock Awards will be granted on the form of Stock Award Agreement most recently approved for use by the Committee or the Board, unless otherwise provided in the resolutions approving the delegation
authority. The Board may not delegate authority to an Officer who is acting solely in the capacity of an Officer (and not also as a Director) to determine the Fair Market Value pursuant to clause (iii) of the definition thereof. 

(e) Effect of Board’s Decision. 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
SUBJECT TO THE PLAN. 
 (a) Share Reserve. 

(i) Subject to Section 9(a) relating to Capitalization Adjustments, and the following sentence regarding the annual increase, the
aggregate number of shares of Common Stock that may be issued pursuant to Stock Awards will not exceed 5,500,000 shares (the “Share Reserve”). In addition, the Share Reserve will automatically increase on April 1st of each
year, for the period commencing on (and including) April 1, 2020 and ending on (and including) April 1, 2029, in an amount equal to four percent (4%) of the total number of shares of Capital Stock outstanding on the last day of the
preceding month. Notwithstanding the foregoing, the Board may act on or prior to March 31st of a given year to provide that there will be no increase in the Share Reserve effective on the subsequent April 1 or that the increase in the Share
Reserve for such period commencing on the subsequent April 1 will be a lesser number of shares of Common Stock than would otherwise occur pursuant to the preceding sentence. 

(ii) For clarity, the Share Reserve in this Section 3(a) is a limitation on the number of shares of Common Stock that may be
issued pursuant to the Plan. Accordingly, this Section 3(a) does not limit the granting of Stock Awards except as provided in Section 7(a). 

(iii) Shares may be issued in connection with a merger or acquisition as permitted by Nasdaq Listing Rule 5635(c) or, if applicable,
NYSE Listed Company Manual Section 303A.08, AMEX Company Guide Section 711 or other applicable rule, and such issuance will not reduce the number of shares available for issuance under the Plan. 

(b) Reversion of Shares to the Share Reserve. If a Stock Award or any portion thereof (i) expires or otherwise terminates without
all of the shares covered by such Stock Award having been issued or (ii) is settled in cash (i.e., the Participant receives cash rather than stock), such expiration, termination or settlement will not reduce (or otherwise offset) the number of
shares of Common Stock that may be available for issuance under the Plan. If any shares of Common Stock issued pursuant to a Stock Award are forfeited back to or repurchased by the Company because of the failure to meet a contingency or condition
required to vest such 

  
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shares in the Participant, then the shares that are forfeited or repurchased will revert to and again become available for issuance under the Plan. Any shares reacquired by the Company in
satisfaction of tax withholding obligations with respect to a Stock Award or as consideration for the exercise or purchase price of a Stock Award will again become available for issuance under the Plan. 

(c) Incentive Stock Option Limit. Subject to the provisions of Section 9(a) relating to Capitalization Adjustments, the aggregate
maximum number of shares of Common Stock that may be issued pursuant to the exercise of Incentive Stock Options will be 16,500,000 shares of Common Stock. 

(d) Limitation on Grants to Non-Employee Directors. The maximum number of shares of Common
Stock subject to Stock Awards granted under the Plan or otherwise during any one calendar year to any Non-Employee Director, taken together with any cash fees paid by the Company to such Non-Employee Director during such calendar year for service on the Board, will not exceed $1,000,000 in total value (calculating the value of any such Stock Awards based on the grant date fair value of such Stock
Awards for financial reporting purposes). 
 (e) 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. 
 4.
ELIGIBILITY. 
 (a) Eligibility for Specific Stock Awards. 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 424(f) of the Code). Stock Awards other than Incentive Stock Options may be
granted to Employees, Directors and Consultants; provided, however, that Stock Awards may not be granted to Employees, Directors and Consultants who are providing Continuous Service only to any “parent” of the Company, as such term
is defined in Rule 405, unless (i) the stock underlying such Stock Awards is treated as “service recipient stock” under Section 409A of the Code (for example, because the Stock Awards are granted pursuant to a corporate
transaction such as a spin off transaction), or (ii) the Company, in consultation with its legal counsel, has determined that such Stock Awards are otherwise exempt from Section 409A of the Code, or (iii) the Company, in consultation
with its legal counsel, has determined that such Stock Awards comply with the distribution requirements of Section 409A of the Code. 

(b) Ten Percent Shareholders. A Ten Percent Shareholder will not be granted an Incentive Stock Option unless the exercise price of such
Option is at least one hundred ten percent (110%) of the Fair Market Value on the date of grant and the Option is not exercisable after the expiration of five (5) years from the date of grant. 

5. PROVISIONS RELATING TO OPTIONS AND
STOCK APPRECIATION RIGHTS. 
 Each Option or SAR will be in such form and will contain such
terms and conditions as the Board or its authorized delegee deems appropriate. All Options will be separately designated 

  
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Incentive Stock Options or Nonstatutory Stock Options at the time of grant, and, if certificates are issued, a separate certificate or certificates will be issued for shares of Common Stock
purchased on exercise of each type of Option. If an Option is not specifically designated as an Incentive Stock Option, or if an Option is designated as an Incentive Stock Option but some portion or all of the Option fails to qualify as an Incentive
Stock Option under the applicable rules, then the Option (or portion thereof) will be a Nonstatutory Stock Option. The provisions of separate Options or SARs need not be identical; provided, however, that each Stock Award Agreement will
conform to (through incorporation of provisions hereof by reference in the applicable Stock Award Agreement or otherwise) the substance of each of the following provisions: 

(a) Term. Subject to the provisions of Section 4(b) regarding Ten Percent Shareholders, no Option or SAR will be exercisable after
the expiration of ten (10) years from the date of its grant or such shorter period specified in the Stock Award Agreement. 
 (b)
Exercise Price. Subject to the provisions of Section 4(b) regarding Ten Percent Shareholders, the exercise or strike price of each Option or SAR will be not less than one hundred percent (100%) of the Fair Market Value of the Common Stock
subject to the Option or SAR on the date the Stock Award is granted. Notwithstanding the foregoing, an Option or SAR may be granted with an exercise or strike price lower than one hundred percent (100%) of the Fair Market Value of the Common Stock
subject to the Stock Award if such Stock Award is granted pursuant to an assumption of or substitution for another option or stock appreciation right pursuant to a Transaction and in a manner consistent with the provisions of Section 409A of
the Code and, if applicable, Section 424(a) of the Code. Each SAR will be denominated in shares of Common Stock equivalents. 
 (c)
Purchase Price for Options. The purchase price of Common Stock acquired pursuant to the exercise of an Option may be paid, to the extent permitted by applicable law and as determined by the Board in its sole discretion, by any combination of the
methods of payment set forth below. The Board will have 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 use a particular method of payment. The permitted methods of payment are as follows: 
 (i) by cash, check,
bank draft or money order payable to the Company; 
 (ii) pursuant to a program developed under Regulation T as promulgated by the
Federal Reserve Board that, prior to the issuance of the 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 aggregate 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; 

  
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 (iv) if an 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 that does not exceed the aggregate exercise price; provided, however,
that the Company will accept a cash or other payment from the Participant to the extent of any remaining balance of the aggregate exercise price not satisfied by such reduction in the number of whole shares to be issued. Shares of Common Stock will
no longer be subject to an Option and will not be exercisable thereafter to the extent that (A) shares issuable upon exercise are used to pay the exercise price pursuant to the “net exercise,” (B) shares are delivered to the
Participant as a result of such exercise, and (C) shares are withheld to satisfy tax withholding obligations; or 
 (v) in any
other form of legal consideration that may be acceptable to the Board and specified in the applicable Stock Award Agreement. 
 (d)
Exercise and Payment of a SAR. To exercise any outstanding SAR, the Participant must provide written notice of exercise to the Company in compliance with the provisions of the Stock Appreciation Right Agreement evidencing such SAR. The
appreciation distribution payable on the exercise of a SAR will be not greater than an amount equal to the excess of (A) the aggregate Fair Market Value (on the date of the exercise of the SAR) of a number of shares of Common Stock equal to the
number of Common Stock equivalents in which the Participant is vested under such SAR, and with respect to which the Participant is exercising the SAR on such date, over (B) the aggregate strike price of the number of Common Stock equivalents
with respect to which the Participant is exercising the SAR on such date. The appreciation distribution may be paid in Common Stock, in cash, in any combination of the two or in any other form of consideration, as determined by the Board and
contained in the Stock Award Agreement evidencing such SAR. 
 (e) Transferability of Options and SARs. The Board may, in its sole
discretion, impose such limitations on the transferability of Options and SARs as the Board will determine. In the absence of such a determination by the Board to the contrary, the following restrictions on the transferability of Options and SARs
will apply: 
 (i) Restrictions on Transfer. An Option or SAR will not be transferable except by will or by the laws of descent and
distribution (or pursuant to subsections (ii) and (iii) below), and will be exercisable during the lifetime of the Participant only by the Participant. The Board may permit transfer of the Option or SAR in a manner that is not prohibited by
applicable tax and securities laws. Except as explicitly provided herein, neither an Option nor a SAR may be transferred for consideration. 

(ii) Domestic Relations Orders. Subject to the approval of the Board or a duly authorized Officer, an Option or SAR may be transferred
pursuant to the terms of a domestic relations order, official marital settlement agreement or other divorce or separation instrument as permitted by Treasury Regulation 1.421-1(b)(2). 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. 

  
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 (iii) Beneficiary Designation. Subject to the approval of the Board or a duly
authorized Officer, a Participant may, by delivering written notice to the Company, in a form approved by the Company (or the designated broker), designate a third party who, upon the death of the Participant, will thereafter be entitled to exercise
the Option or SAR and receive the Common Stock or other consideration resulting from such exercise. In the absence of such a designation, upon the death of the Participant, the executor or administrator of the Participant’s estate will be
entitled to exercise the Option or SAR and receive the Common Stock or other consideration resulting from such exercise. However, the Company may prohibit designation of a beneficiary at any time, including due to any conclusion by the Company that
such designation would be inconsistent with the provisions of applicable laws. 
 (f) Vesting Generally. The total number of shares
of Common Stock subject to an Option or SAR may vest and become exercisable in periodic installments that may or may not be equal. The Option or SAR may be subject to such other terms and conditions on the time or times when it may or may not be
exercised (which may be based on the satisfaction of Performance Goals or other criteria) as the Board may deem appropriate. The vesting provisions of individual Options or SARs may vary. The provisions of this Section 5(f) are subject to any
Option or SAR provisions governing the minimum number of shares of Common Stock as to which an Option or SAR may be exercised. 
 (g)
Termination of Continuous Service. Except as otherwise provided in the applicable Stock Award Agreement or other agreement between the Participant and the Company, if a Participant’s Continuous Service terminates (other than for Cause and
other than upon the Participant’s death or Disability), the Participant may exercise his or her Option or SAR (to the extent that the Participant was entitled to exercise such Stock Award as of the date of termination of Continuous Service)
within the period of time ending on the earlier of (i) the date three (3) months following the termination of the Participant’s Continuous Service (or such longer or shorter period specified in the applicable Stock Award Agreement),
and (ii) the expiration of the term of the Option or SAR as set forth in the Stock Award Agreement. If, after termination of Continuous Service, the Participant does not exercise his or her Option or SAR within the applicable time frame, the
Option or SAR (as applicable) will terminate. 
 (h) Extension of Termination Date. If the exercise of an Option or SAR following the
termination of the Participant’s Continuous Service (other than for Cause and other than upon the Participant’s death or Disability) would be prohibited at any time solely because the issuance of shares of Common Stock would violate the
registration requirements under the Securities Act, then the Option or SAR will terminate on the earlier of (i) the expiration of a total period of time (that need not be consecutive) equal to the applicable post termination exercise period, as
set forth in Section 5(g), after the termination of the Participant’s Continuous Service during which the exercise of the Option or SAR would not be in violation of such registration requirements, or (ii) the expiration of the term of
the Option or SAR as set forth in the applicable Stock Award Agreement. In addition, unless otherwise provided in a Participant’s Stock Award Agreement, if the sale of any Common Stock received upon exercise of an Option or SAR following the
termination of the Participant’s Continuous Service (other than for Cause) would violate the Company’s insider trading policy, then the Option or SAR will terminate on the earlier of (i) the expiration of a period of time (that need
not be consecutive) equal to the applicable post-termination exercise period, as set forth in Section 5(g), after the termination of 

  
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the Participant’s Continuous Service during which the sale of the Common Stock received upon exercise of the Option or SAR would not be in violation of the Company’s insider trading
policy, or (ii) the expiration of the term of the Option or SAR as set forth in the applicable Stock Award Agreement. 
 (i)
Disability of Participant. Except as otherwise provided in the applicable Stock Award Agreement or other agreement between the Participant and the Company, if a Participant’s Continuous Service terminates as a result of the
Participant’s Disability, the Participant may exercise his or her Option or SAR (to the extent that the Participant was entitled to exercise such Option or SAR as of the date of termination of Continuous Service), but only within such period of
time ending on the earlier of (i) the date twelve (12) months following such termination of Continuous Service (or such longer or shorter period specified in the Stock Award Agreement), and (ii) the expiration of the term of the
Option or SAR as set forth in the Stock Award Agreement. If, after termination of Continuous Service, the Participant does not exercise his or her Option or SAR within the applicable time frame, the Option or SAR (as applicable) will terminate. 

(j) Death of Participant. Except as otherwise provided in the applicable Stock Award Agreement or other agreement between the
Participant and the Company, if (i) a Participant’s Continuous Service terminates as a result of the Participant’s death, or (ii) the Participant dies within the period (if any) specified in the Stock Award Agreement for
exercisability after the termination of the Participant’s Continuous Service (for a reason other than death), then the Option or SAR may be exercised (to the extent the Participant was entitled to exercise such Option or SAR as of the date of
death) by the Participant’s estate, by a person who acquired the right to exercise the Option or SAR by bequest or inheritance or by a person designated to exercise the Option or SAR upon the Participant’s death, but only within the period
ending on the earlier of (i) the date eighteen (18) months following the date of death (or such longer or shorter period specified in the Stock Award Agreement), and (ii) the expiration of the term of such Option or SAR as set forth
in the Stock Award Agreement. If, after the Participant’s death, the Option or SAR is not exercised within the applicable time frame, the Option or SAR (as applicable) will terminate. 

(k) Termination for Cause. Except as explicitly provided otherwise in a Participant’s Stock Award Agreement or other individual
written agreement between the Company or any Affiliate and the Participant, if a Participant’s Continuous Service is terminated for Cause, the Option or SAR will terminate immediately upon such Participant’s termination of Continuous
Service, and the Participant will be prohibited from exercising his or her Option or SAR from and after the time of such termination of Continuous Service. 

(l) Non-Exempt Employees. If an Option or SAR is granted to an Employee who is a non-exempt employee for purposes of the Fair Labor Standards Act of 1938, as amended, the Option or SAR will not be first exercisable for any shares of Common Stock until at least six (6) months following the
date of grant of the Option or SAR (although the Stock Award may vest prior to such date). Consistent with the provisions of the Worker Economic Opportunity Act, (i) if such non-exempt Employee dies or
suffers a Disability, (ii) upon a Transaction in which such Option or SAR is not assumed, continued, or substituted, (iii) upon a Change in Control, or (iv) upon the Participant’s retirement (as such term may be defined in the


  
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Participant’s Stock Award Agreement, in another agreement between the Participant and the Company, or, if no such definition, in accordance with the Company’s then current employment
policies and guidelines), the vested portion of any Options and SARs may be exercised earlier than six (6) months following the date of grant. The foregoing provision 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. To the extent permitted and/or required for compliance with the Worker Economic
Opportunity Act to ensure that any income derived by a non-exempt employee in connection with the exercise, vesting or issuance of any shares under any other Stock Award will be exempt from the employee’s
regular rate of pay, the provisions of this Section 5(l) will apply to all Stock Awards and are hereby incorporated by reference into such Stock Award Agreements. 

6. PROVISIONS OF STOCK AWARDS OTHER THAN
OPTIONS AND SARS. 
 (a) Restricted Stock Awards. Each Restricted
Stock Award Agreement will be in such form and will contain such terms and conditions as the Board deems appropriate. To the extent consistent with the Company’s bylaws, at the Board’s election, shares of Common Stock underlying a
Restricted Stock Award may be (i) held in book entry form subject to the Company’s instructions until any restrictions relating to the Restricted Stock Award lapse; or (ii) evidenced by a certificate, which certificate will be held in
such form and manner as determined by the Board. The terms and conditions of Restricted Stock Award Agreements may change from time to time, and the terms and conditions of separate Restricted Stock Award Agreements need not be identical. Each
Restricted Stock Award Agreement will conform to (through incorporation of the provisions hereof by reference in the agreement or otherwise) the substance of each of the following provisions: 

(i) Consideration. A Restricted Stock Award may be awarded in consideration for (A) cash, check, bank draft or money order payable
to the Company, (B) past services to the Company or an Affiliate, or (C) any other form of legal consideration that may be acceptable to the Board, in its sole discretion, and permissible under applicable law. 

(ii) Vesting. Shares of Common Stock awarded under the Restricted Stock Award Agreement may be subject to forfeiture to the Company in
accordance with a vesting schedule to be determined by the Board. 
 (iii) Termination of Participant’s Continuous Service. If
a Participant’s Continuous Service terminates, 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 as of the date of termination of Continuous Service
under the terms of the Restricted Stock Award Agreement. 
 (iv) Transferability. Rights to acquire shares of Common Stock under the
Restricted Stock Award Agreement will be transferable by the Participant only upon such terms and conditions as are set forth in the Restricted Stock Award Agreement, as the Board will determine in its sole discretion, so long as Common Stock
awarded under the Restricted Stock Award Agreement remains subject to the terms of the Restricted Stock Award Agreement. 

  
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 (v) Dividends. A Restricted Stock Award Agreement may provide that any dividends
paid on Restricted Stock will be subject to the same vesting and forfeiture restrictions as apply to the shares subject to the Restricted Stock Award to which they relate. 

(b) Restricted Stock Unit Awards. Each Restricted Stock Unit Award Agreement will be in such form and will contain such terms and
conditions as the Board deems appropriate. The terms and conditions of Restricted Stock Unit Award Agreements may change from time to time, and the terms and conditions of separate Restricted Stock Unit Award Agreements need not be identical. Each
Restricted Stock Unit Award Agreement will conform to (through incorporation of the provisions hereof by reference in the Agreement or otherwise) the substance of each of the following provisions: 

(i) Consideration. At the time of grant of a Restricted Stock Unit Award, the Board will determine the consideration, if any, to be
paid by the Participant upon delivery of each share of Common Stock subject to the Restricted Stock Unit Award. The consideration to be paid (if any) by the Participant for each share of Common Stock subject to a Restricted Stock Unit Award may be
paid in any form of legal consideration that may be acceptable to the Board, in its sole discretion, and permissible under applicable law. 

(ii) Vesting. At the time of the grant of a Restricted Stock Unit Award, the Board may impose such restrictions on or conditions to
the vesting of the Restricted Stock Unit Award as it, in its sole discretion, deems appropriate. 
 (iii) Payment. A Restricted
Stock Unit Award may be settled by the delivery of shares of Common Stock, their cash equivalent, any combination thereof or in any other form of consideration, as determined by the Board and contained in the Restricted Stock Unit Award Agreement.

 (iv) Additional Restrictions. At the time of the grant of a Restricted Stock Unit Award, the Board, as it deems appropriate, may
impose such restrictions or conditions that delay the delivery of the shares of Common Stock (or their cash equivalent) subject to a Restricted Stock Unit Award to a time after the vesting of such Restricted Stock Unit Award. 

(v) Dividend Equivalents. Dividend equivalents may be credited in respect of shares of Common Stock covered by a Restricted Stock Unit
Award, as determined by the Board and contained in the Restricted Stock Unit Award Agreement. At the sole discretion of the Board, such dividend equivalents may be converted into additional shares of Common Stock covered by the Restricted Stock Unit
Award in such manner as determined by the Board. Any additional shares covered by the Restricted Stock Unit Award credited by reason of such dividend equivalents will be subject to all of the same terms and conditions of the underlying Restricted
Stock Unit Award Agreement to which they relate. 
 (vi) Termination of Participant’s Continuous Service. Except as otherwise
provided in the applicable Restricted Stock Unit Award Agreement, such portion of the Restricted Stock Unit Award that has not vested will be forfeited upon the Participant’s termination of Continuous Service. 

  
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 (c) Performance Awards. 

(i) Performance Stock Awards. A Performance Stock Award is a Stock Award that is payable or that may be granted, may vest or may be
exercised, contingent upon the attainment during a Performance Period of certain Performance Goals. A Performance Stock Award may, but need not, require the Participant’s completion of a specified period of Continuous Service. The length of any
Performance Period, the Performance Goals to be achieved during the Performance Period, and the measure of whether and to what degree such Performance Goals have been attained will be conclusively determined by the Board in its sole discretion. In
addition, to the extent permitted by applicable law and the applicable Award Agreement, the Board may determine that cash may be used in payment of Performance Stock Awards. 

(ii) Performance Cash Awards. A Performance Cash Award is a cash award that is payable contingent upon the attainment during a
Performance Period of certain Performance Goals. A Performance Cash Award may also require the completion of a specified period of Continuous Service. At the time of grant of a Performance Cash Award, the length of any Performance Period, the
Performance Goals to be achieved during the Performance Period, and the measure of whether and to what degree such Performance Goals have been attained will be conclusively determined by the Board in its sole discretion. The Board may specify the
form of payment of Performance Cash Awards, which may be cash or other property, or may provide for a Participant to have the option for his or her Performance Cash Award, or such portion thereof as the Board may specify, to be paid in whole or in
part in cash or other property. 
 (iii) Board Discretion. The Board retains the discretion to equitably adjust the compensation or
economic benefit due upon attainment of Performance Goals to take into account unforeseen circumstances (e.g., acquisitions and dispositions) and to define the manner of calculating the Performance Criteria it selects to use for a 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 Stock Award Agreement or the written terms of a Performance Cash Award. 

(d) Other Stock Awards. Other forms of Stock Awards 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 one hundred percent (100%) of the Fair Market Value of the Common Stock at the time of grant) may be granted either alone or
in addition to Stock Awards provided for under Section 5 and the preceding provisions of this Section 6. Subject to the provisions of the Plan, the Board will have sole and complete authority to determine the persons to whom and the time
or times at which such Other Stock Awards will be granted, the number of shares of Common Stock (or the cash equivalent thereof) to be granted pursuant to such Other Stock Awards and all other terms and conditions of such Other Stock Awards. 

  
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 7. COVENANTS OF THE
COMPANY. 
 (a) Availability of Shares. The Company will keep available at all times the number of
shares of Common Stock reasonably required to satisfy then-outstanding Stock Awards. 
 (b) Securities Law Compliance. The Company
will seek to obtain from each regulatory commission or agency having jurisdiction over the Plan such authority as may be required to grant Stock Awards and to issue and sell shares of Common Stock upon exercise or vesting of the Stock Awards;
provided, however, that this undertaking will not require the Company to register under the Securities Act (or other applicable law) the Plan, any Stock Award or any Common Stock issued or issuable pursuant to any such Stock 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 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 of such Stock Awards unless and until such authority is obtained. A Participant will not be eligible for the grant of an Award or the subsequent
issuance of cash or Common Stock pursuant to the Award if such grant or issuance would be in violation of any applicable securities law. 

(c) No Obligation to Notify or Minimize Taxes. The Company will have no duty or obligation to any Participant to advise such holder as
to the time or manner of exercising such Stock Award. Furthermore, the Company will have 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. 
 8.
MISCELLANEOUS. 
 (a) Use of Proceeds from Sales of Common Stock. Proceeds from the sale of
shares of Common Stock pursuant to Stock Awards will constitute general funds of the Company. 
 (b) 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
constituting 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 papering of 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. 

(c) Shareholder 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 an Award unless and until (i) such Participant has satisfied all requirements for exercise of, or the issuance of shares of Common Stock under, the Award pursuant to its terms, and (ii) the issuance


  
 13. 













 
of the Common Stock subject to the Award has been entered into the books and records of the Company. 

(d) No Employment or Other Service Rights. Nothing in the Plan, any Award Agreement or any other instrument executed thereunder or in
connection with any Stock 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 will affect the right of the Company
or an Affiliate to terminate (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 domiciled or
incorporated, as the case may be. 
 (e) 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) after the date of grant of any Award to the Participant, the Board has the right in its sole discretion to (x) 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 (y) 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. 
 (f)
Incentive Stock Option Limitations. 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 one hundred thousand dollars ($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). 
 (g) Investment Assurances. The Company may require a Participant, as a condition of exercising or acquiring
Common Stock under any Award, (i) to give written assurances satisfactory to the Company as to the Participant’s knowledge and experience in financial and business matters and/or to employ a purchaser representative reasonably satisfactory
to the Company who is knowledgeable and experienced in financial and business matters and that he or she is capable of evaluating, alone or together with the purchaser representative, the merits and risks of exercising the Award; and (ii) to
give written assurances satisfactory to the Company stating that the Participant is acquiring Common Stock subject to the Award for the Participant’s own account and not with any present intention of selling or otherwise distributing the Common
Stock. The foregoing requirements, and any assurances given pursuant to such requirements, will be inoperative if (A) the issuance of the shares upon 

  
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the exercise or acquisition of Common Stock under the Award has been registered under a then currently effective registration statement under the Securities Act, or (B) as to any particular
requirement, a determination is made by counsel for the Company that such requirement need not be met in the circumstances under the then applicable securities laws. The Company may, upon advice of counsel to the Company, place legends on stock
certificates issued under the Plan as such counsel deems necessary or appropriate in order to comply with applicable securities laws, including, but not limited to, legends restricting the transfer of the Common Stock. 

(h) Withholding Obligations. Unless prohibited by the terms of an Award Agreement, the Company may, in its sole discretion, satisfy any
federal, state or local tax 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; provided, however, that no shares of Common Stock are withheld with a value exceeding the maximum amount of tax required to be withheld by
law (or such lesser amount as may be necessary to avoid classification of the Award as a liability for financial accounting purposes); (iii) withholding cash from an Award settled in cash; (iv) withholding payment from any amounts otherwise
payable to the Participant; or (v) by such other method as may be set forth in the Award Agreement. 
 (i) Electronic Delivery.
Any reference herein 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). 
 (j) 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 Stock Award may be deferred and may establish programs and
procedures for deferral elections to be made by Participants. Deferrals by Participants will be made in accordance with Section 409A of the Code. Consistent with Section 409A of the Code, the Board may provide for distributions while a
Participant is still an employee or otherwise providing services to the Company. The Board is authorized to make deferrals of Stock Awards and determine when, and in what annual percentages, Participants may receive payments, including lump sum
payments, following the Participant’s termination of Continuous Service, and implement such other terms and conditions consistent with the provisions of the Plan and in accordance with applicable law. 

(k) Compliance with Section 409A of the Code. 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 of the Code, and, to the extent not so exempt, in compliance with
Section 409A of the Code. If the Board determines that any Award granted hereunder is not exempt from and is therefore subject to Section 409A of the Code, 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 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 

  
 15. 













 
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 of the Code is a “specified employee” for purposes of Section 409A of the Code, no distribution or payment of any amount that is due because of a “separation from service” (as
defined in Section 409A of the Code without regard to alternative definitions thereunder) will be issued or paid before the date that is six (6) months 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 of the Code, and any amounts so deferred will be paid in a lump sum on the day after such six
(6) month period elapses, with the balance paid thereafter on the original schedule. 
 (l) 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. 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 an event constituting Cause. No
recovery of compensation under such a clawback policy will be an event giving rise to a right to resign for “good reason” or “constructive termination” (or similar term) under any agreement with the Company or an Affiliate. 

9. ADJUSTMENTS UPON CHANGES IN COMMON
STOCK; OTHER CORPORATE EVENTS. 
 (a) Capitalization
Adjustments. 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 that may be issued pursuant to the exercise of Incentive Stock Options pursuant to Section 3(c) and, (iii) the class(es) and number of securities and price per share of stock subject to outstanding Stock
Awards. The Board will make such adjustments, and its determination will be final, binding and conclusive. 
 (b) Dissolution. Except
as otherwise provided in the Stock Award Agreement, in the event of a Dissolution of the Company, all outstanding Stock Awards (other than Stock 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, 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 Stock Award is providing Continuous Service, provided, however, that the Board may, in its sole discretion, cause some or all Stock Awards to become fully vested,
exercisable and/or no longer subject to repurchase or forfeiture (to the extent such Stock Awards have not previously expired or terminated) before the Dissolution is completed but contingent on its completion. 

  
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 (c) Transactions. The following provisions will apply to Stock Awards in the event of
a Transaction unless otherwise provided in the Stock Award Agreement 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 a Stock Award.
In the event of a Transaction, then, notwithstanding any other provision of the Plan, the Board may take one or more of the following actions with respect to Stock Awards, contingent upon the closing or completion of the Transaction: 

(i) arrange for the surviving corporation or acquiring corporation (or the surviving or acquiring corporation’s parent company) to
assume or continue the Stock Award or to substitute a similar stock award for the Stock Award (including, but not limited to, an award to acquire the same consideration paid to the shareholders of the Company pursuant to the Transaction); 

(ii) arrange for the assignment of any reacquisition or repurchase rights held by the Company in respect of Common Stock issued
pursuant to the Stock Award to the surviving corporation or acquiring corporation (or the surviving or acquiring corporation’s parent company); 

(iii) accelerate the vesting, in whole or in part, of the Stock Award (and, if applicable, the time at which the Stock Award may be
exercised) to a date prior to the effective time of such Transaction as the Board determines (or, if the Board does not determine such a date, to the date that is five (5) days prior to the effective date of the Transaction), with such Stock
Award terminating if not exercised (if applicable) at or prior to the effective time of the Transaction; provided, however, that the Board may require Participants to complete and deliver to the Company a notice of exercise before the effective date
of a Transaction, which exercise is contingent upon the effectiveness of such Transaction; 
 (iv) arrange for the lapse, in whole
or in part, of any reacquisition or repurchase rights held by the Company with respect to the Stock Award; 
 (v) cancel or arrange
for the cancellation of the Stock Award, to the extent not vested or not exercised prior to the effective time of the Transaction, in exchange for such cash consideration, if any, as the Board, in its sole discretion, determines is appropriate; and

 (vi) make a payment, in such form as may be determined by the Board equal to the excess, if any, of (A) the value of the
property the Participant would have received upon the exercise of the Stock Award immediately prior to the effective time of the Transaction, over (B) any exercise price payable by such holder in connection with such exercise. For clarity, this
payment may be zero ($0) if the value of the property is equal to or less than the exercise price. Payments under this provision may be delayed to the same extent that payment of consideration to the holders of the Company’s Common Stock in
connection with the Transaction is delayed as a result of escrows, earn outs, holdbacks or any other contingencies. 
 The Board need not take the same
action or actions with respect to all Stock Awards or portions thereof or with respect to all Participants. The Board may take different actions with respect to the vested and unvested portions of a Stock Award. 

  
 17. 













 (d) Change in Control. A Stock Award may be subject to additional acceleration of
vesting and exercisability upon or after a Change in Control as may be provided in the Stock Award Agreement for such Stock Award or as may be provided in any other written agreement between the Company or any Affiliate and the Participant, but in
the absence of such provision, no such acceleration will occur. 
 10. PLAN TERM;
EARLIER TERMINATION OR SUSPENSION OF THE PLAN. 

The Board may suspend or terminate the Plan at any time. No Incentive Stock Option will be granted after the tenth (10th) anniversary of the
earlier of (i) the date the Plan is adopted by the Board, or (ii) the date the Plan is approved by the shareholders of the Company. No Stock Awards may be granted under the Plan while the Plan is suspended or after it is terminated. 

11. EXISTENCE OF THE PLAN. The Plan will take effect concurrently
with the closing of the share exchange pursuant to that certain Share Exchange Agreement (the “Share Exchange Agreement”), dated September 29, 2019, between and among the Company, Immunovant Sciences Ltd., a Bermuda
exempted limited company, and the shareholders named therein (the “Effective Date”). 
 12.
CHOICE OF LAW. 
 The laws of the State of Delaware will govern all
questions concerning the construction, validity and interpretation of this Plan, without regard to that state’s conflict of law rules. 

13. DEFINITIONS. As used in the Plan, the following definitions will apply to the capitalized
terms indicated below: 
 (a) “Affiliate” means, at the time of determination, any “parent”
or “subsidiary” of the Company as such terms are defined in Rule 405. The Board will have the authority to determine the time or times at which “parent” or “subsidiary” status is determined within the foregoing
definition. 
 (b) “Award” means a Stock Award or a Performance Cash Award. 

(c) “Award Agreement” means a written agreement between the Company and a Participant evidencing the
terms and conditions of an Award. 
 (d) “Board” means the Board of Directors of the Company. 

(e) “Capital Stock” means each and every class of common stock of the Company, regardless of the number of
votes per share. 
 (f) “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 Stock Award after the Effective Date without the receipt of consideration by the Company through 

  
 18. 













 
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. 

(g) “Cause” will have the meaning ascribed to such term in any written agreement between the 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) such Participant’s willful and continued failure substantially to
perform his or her duties and responsibilities to the Company or deliberate violation of a Company policy; (ii) such Participant’s commission of any (a) act of fraud, embezzlement, dishonesty or any other willful misconduct or gross
negligence that has caused or is reasonably expected to result in material injury to the Company or (b) any felony; (iii) unauthorized use or disclosure by such Participant of any proprietary information or trade secrets of the Company or
any other party to whom the Participant owes an obligation of nondisclosure as a result of his or her relationship with the Company; or (iv) such Participant’s willful breach of any of his or her obligations under any written agreement or
covenant with the Company. The determination that a termination of the Participant’s Continuous Service is either for Cause or without Cause will be made by the Company, in its sole discretion. Any determination by the Company that the
Continuous Service of a Participant was terminated with or without Cause for the purposes of outstanding Stock 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. 
 (h) “Change in 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 fifty percent (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 will 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; (C) on account of the future acquisition of securities of the Company by an Effective Date Majority Owner (as defined herein); or (D) 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, 

  
 19. 













 
increases the percentage of the then outstanding voting securities Owned by the Subject Person over the designated percentage threshold, then a Change in Control will be deemed to occur; 

(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 with another entity (the “Surviving Entity”), the shareholders of the Company immediately prior thereto do not Own, directly or
indirectly, either (A) outstanding voting securities representing more than fifty percent (50%) of the combined outstanding voting power of the Surviving Entity or (B) more than fifty percent (50%) of the combined outstanding voting power
of the parent of the Surviving Entity, in each case in substantially the same proportions as their Ownership of the outstanding voting securities of the Company immediately prior to such transaction; provided, however, that a merger,
consolidation or similar transaction will not constitute a Change in Control under prong (A) or (B) herein, if either (a) the outstanding voting securities representing more than fifty percent (50%) of the combined voting power of the
Surviving Entity or the parent of the Surviving Entity are owned, directly or indirectly, by an Effective Date Majority Owner or (B) the right to appoint directors entitled to cast a majority of the votes on each matter presented to the board
of directors of the Surviving Entity or the parent of the Surviving Entity is held, directly or indirectly, by an Effective Date Majority Owner; 

(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 (the “Acquiring
Entity”) of which more than fifty percent (50%) of the combined voting power of the voting securities 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; provided, however, that a sale, lease, license or other disposition of all or substantially all of the consolidated assets of the Company and its Subsidiaries
will not constitute a Change in Control under this subsection if either (a) the outstanding voting securities representing more than fifty percent (50%) of the combined voting power of the Acquiring Entity or the parent of the Acquiring Entity
are owned, directly or indirectly, by an Effective Date Majority Owner or (B) the right to appoint directors entitled to cast a majority of the votes on each matter presented to the board of directors of the Acquiring Entity or the parent of
the Acquiring Entity is held, directly or indirectly, by an Effective Date Majority Owner; or 
 (iv) individuals who, on the
Effective Date, are members of the Board entitled to cast a majority of the votes on each matter presented to the Board (the “Incumbent Board”) cease for any reason to be entitled to cast a majority of the votes on each
matter presented to 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 will, for purposes of this Plan, be considered as a member of the Incumbent Board. 
 Notwithstanding the foregoing definition or
any other provision of the Plan, (A) the term Change in Control will not include a change in the ownership of any Effective Date Majority Owner or a sale of assets, merger or other transaction effected exclusively for the purpose of changing
the 

  
 20. 













 
domicile of the Company, and (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 will
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 will apply. 
 (i) “Code” means the Internal Revenue Code of 1986, as amended, including any
applicable regulations and guidance thereunder. 
 (j) “Committee” means a committee of two (2) or more
Directors to whom authority has been delegated by the Board in accordance with Section 2(c). 
 (k) “Common
Stock” means the common shares of the Company. 
 (l) “Company” means, prior to
the Effective Date, Health Sciences Acquisitions Corporation, a Delaware corporation, and immediately following the Effective Date, the combined company after giving effect to the share exchange pursuant to the Share Exchange Agreement, which
company shall be renamed Immunovant, Inc. 
 (m) “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. 

(n) “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 in its sole discretion, 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 the Company or an Affiliate, or to a Director will not constitute an interruption of Continuous Service.
Notwithstanding the foregoing, to the extent permitted by law, the Board or the chief executive officer of the Company or any of its Subsidiaries, as applicable, in that party’s sole discretion, may determine (at any time, including upon the
date of a grant of the applicable Award or upon the commencement of the applicable leave of absence or the date of transfer) whether Continuous Service will be considered interrupted and when Continuous Service will be considered terminated in the
case of (i) any leave of absence approved by the Board or the chief executive officer, including sick leave, military leave or any other personal leave, or (ii) transfers between the Company, an Affiliate, or their successors;


  
 21. 













 
provided, further, that 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 of
the Code, 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). 

(o) “Corporate Transaction” means a sale of all or substantially all of the Company’s assets, or a
merger, consolidation or other capital reorganization or business combination transaction of the Company with or into another corporation, entity or person, or the direct or indirect acquisition (including by way of a tender or exchange offer) by
any person, or persons acting as a group, of beneficial ownership or a right to acquire beneficial ownership of shares representing a majority of the voting power of the then outstanding shares of capital stock of the Company. 

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

(q) “Disability” means, with respect to a Participant, the inability of such Participant to engage in
any substantial gainful activity by reason of any medically determinable physical or mental impairment that can be expected to result in death or that has lasted or can be expected to last for a continuous period of not less than twelve
(12) months as provided in Sections 22(e)(3) and 409A(a)(2)(c)(i) 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. 

(r) “Dissolution” means when the Company, after having executed a certificate of dissolution with the
State of Delaware (or other applicable state), has completely wound up its affairs. 
 (s) “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. 

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

(u) “Exchange Act” means the Securities Exchange Act of 1934, as amended, and the rules and regulations
promulgated thereunder. 
 (v) “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 an
offering of such securities, (iv) an Entity Owned, directly or indirectly, by the shareholders of the Company in substantially the same proportions as their Ownership of stock of the Company; or (v) any


  
 22. 













 
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, (A) is the Owner, directly or indirectly,
of securities of the Company representing more than fifty percent (50%) of the combined voting power of the Company’s then outstanding securities or (B) has the right to appoint directors entitled to cast a majority of the votes on each
matter presented to the Board (such natural person, Entity or Group described in this prong (v), an “Effective Date Majority Owner”). 

(w) “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 a source the Board deems reliable. 
 (ii) 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 selling price on the last preceding date for which such quotation exists. 

(iii) In the absence of such markets for the Common Stock, 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. 
 (x) “Incentive Stock Option” means an
option granted pursuant to Section 5 of the Plan that is intended to be, and that qualifies as, an “incentive stock option” within the meaning of Section 422 of the Code. 

(y) “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. 
 (z) “Nonstatutory Stock
Option” means any option granted pursuant to Section 5 of the Plan that does not qualify as an Incentive Stock Option. 

(aa) “Officer” means a person who is an officer of the Company or an Affiliate within the meaning of
Section 16 of the Exchange Act. 
 (bb) “Option” means an Incentive Stock Option or a Nonstatutory Stock
Option to purchase shares of Common Stock granted pursuant to the Plan. 

  
 23. 













 (cc) “Option Agreement” means a written agreement
between the Company and an Optionholder evidencing the terms and conditions of an Option grant. Each Option Agreement will be subject to the terms and conditions of the Plan. 

(dd) “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. 
 (ee) “Other Stock Award” means an award based in whole
or in part by reference to the Common Stock which is granted pursuant to the terms and conditions of Section 6(c). 
 (ff)
“Other Stock Award Agreement” means a written agreement between the Company and a holder of an Other Stock Award evidencing the terms and conditions of an Other Stock Award grant. Each Other Stock Award Agreement
will be subject to the terms and conditions of the Plan. 
 (gg) “Own,”
“Owned,” “Owner,” “Ownership” 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. 
 (hh) “Participant” means a person to whom an
Award is granted pursuant to the Plan or, if applicable, such other person who holds an outstanding Award. 
 (ii)
“Performance Cash Award” means an award of cash granted pursuant to the terms and conditions of Section 6(c)(ii). 

(jj) “Performance Criteria” means the 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: (1) earnings
(including earnings per share and net earnings); (2) earnings before interest, taxes and depreciation; (3) earnings before interest, taxes, depreciation and amortization; (4) earnings before interest, taxes, depreciation, amortization and
legal settlements; (5) earnings before interest, taxes, depreciation, amortization, legal settlements and other income (expense); (6) earnings before interest, taxes, depreciation, amortization, legal settlements, other income (expense) and
stock-based compensation; (7) earnings before interest, taxes, depreciation, amortization, legal settlements, other income (expense), stock-based compensation and changes in deferred revenue; (8) total shareholder return; (9) return
on equity or average shareholders’ equity; (10) return on assets, investment, or capital employed; (11) stock price; (12) margin (including gross margin); (13) income (before or after taxes); (14) operating income;
(15) operating income after taxes; (16) pre-tax profit; (17) operating cash flow; (18) sales or revenue targets; (19) increases in revenue or product revenue; (20) expenses and
cost reduction goals; (21) improvement in or attainment of working capital levels; (22) economic value added (or an equivalent metric); (23) market share; (24) cash flow; (25) cash flow per share; (26) share price
performance; (27) debt reduction; (28) implementation or completion of projects or processes; (29) employee retention; (30) 

  
 24. 













 
shareholders’ equity; (31) capital expenditures; (32) debt levels; (33) operating profit or net operating profit; (34) workforce diversity; (35) growth of net income
or operating income; (36) billings; (37) bookings; (38) initiation or completion of phases of clinical trials and/or studies by specified dates; (39) patient enrollment rates, (40) budget management; (41) regulatory body
and/or pricing approval with respect to products, studies and/or trials; (42) commercial launch of products; (43) progress of partnered programs; (44) strategic partnerships or transactions; and (45) any other measures of
performance selected by the Board. 
 (kk) “Performance Goals” means, for a Performance Period, the
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, or 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 dilutive effects of acquisitions or joint ventures; (6) 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; (7) 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 shareholders other than regular cash dividends; (8) to
exclude the effects of stock based compensation and the award of bonuses under the Company’s bonus plans; (9) to exclude costs incurred in connection with potential acquisitions or divestitures that are required to be expensed under
generally accepted accounting principles; (10) to exclude the goodwill and intangible asset impairment charges that are required to be recorded under generally accepted accounting principles; (11) to exclude the effects of items that are
“unusual” in nature or occur “infrequently” as determined under generally accepted accounting principles; (12) to exclude the effect of any other unusual, non-recurring gain or loss;
(13) to exclude the effects of the timing of acceptance for review and/or approval of submissions to the Food and Drug Administration or any other regulatory body and (14) to exclude the effects of entering into or achieving milestones
involved in licensing, collaboration, or other business development transactions. 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 Stock
Award Agreement or the written terms of a Performance Cash Award. 
 (ll) “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 and the payment of a Stock Award or a Performance Cash


  
 25. 













 
Award. Performance Periods may be of varying and overlapping duration, at the sole discretion of the Board. 

(mm) “Performance Stock Award” means a Stock Award granted under the terms and conditions of
Section 6(c)(i). 
 (nn) “Plan” means this Health Sciences Acquisition Corporation 2019 Equity Incentive
Plan, as it may be amended from time to time. 
 (oo) “Restricted Stock Award” means an award of shares of
Common Stock which is granted pursuant to the terms and conditions of Section 6(a). 
 (pp) “Restricted Stock Award
Agreement” means a written agreement between the Company and a holder of a Restricted Stock Award evidencing the terms and conditions of a Restricted Stock Award grant. Each Restricted Stock Award Agreement will be subject to the terms
and conditions of the Plan. 
 (qq) “Restricted Stock Unit Award” means a right to receive shares of
Common Stock which is granted pursuant to the terms and conditions of Section 6(b). 
 (rr) “Restricted Stock Unit
Award Agreement” means a written agreement between the Company and a holder of a Restricted Stock Unit Award evidencing the terms and conditions of a Restricted Stock Unit Award grant. Each Restricted Stock Unit Award Agreement
will be subject to the terms and conditions of the Plan. 
 (ss) “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. 
 (tt) “Rule 405” means Rule 405 promulgated under the Securities Act. 

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

(vv) “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 5. 
 (ww) “Stock
Appreciation Right Agreement” means a written agreement between the Company and a holder of a Stock Appreciation Right evidencing the terms and conditions of a Stock Appreciation Right grant. Each Stock Appreciation Right
Agreement will be subject to the terms and conditions of the Plan. 
 (xx) “Stock Award” means any
right to receive Common Stock granted under the Plan, including an Incentive Stock Option, a Nonstatutory Stock Option, a Restricted Stock Award, a Restricted Stock Unit Award, a Stock Appreciation Right, a Performance Stock Award, or any Other
Stock Award. 
 (yy) “Stock Award Agreement” means a written agreement between the Company and a
Participant evidencing the terms and conditions of a Stock Award grant. Each Stock Award Agreement will be subject to the terms and conditions of the Plan. 

  
 26. 













 (zz) “Subsidiary” means, with respect to the Company,
(i) any corporation of which more than fifty percent (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 fifty percent (50%) . 

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

(bbb) “Transaction” means a Corporate Transaction or a Change in Control. To the extent required for
compliance with Section 409A of the Code, in no event will a Transaction be deemed to have occurred if such transaction is not also a “change in the ownership or effective control of” the Company or “a change in the ownership of
a substantial portion of the assets of” the Company as determined under Treasury Regulations Section 1.409A-3(i)(5) (without regard to any alternative definition thereunder). The Board may, in its
sole discretion and without a Participant’s consent, amend the definition of “Transaction” to conform to the definition of “Change in Control” under Section 409A of the Code, and the regulations thereunder, to the
extent required for compliance with Section 409A of the Code. 

  
 27. 













 HEALTH SCIENCES ACQUISITIONS
CORPORATION 
 STOCK OPTION GRANT NOTICE 

(2019 EQUITY INCENTIVE PLAN) 

Health Sciences Acquistions Corporation (the “Company”), pursuant to its 2019 Equity Incentive Plan (the
“Plan”), hereby grants to Optionholder an option to purchase the number of shares of the Company’s Common Stock set forth below. This option is subject to all of the terms and conditions as set forth in this notice, in
the Option Agreement, the Plan 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 Option Agreement will have the same
definitions as in the Plan or the Option Agreement. If there is any conflict between the terms in this notice and the Plan, the terms of the Plan will control. 
  

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

  

					
	Type of Grant:	  	☐ Incentive Stock Option1	  	☐ Nonstatutory Stock Option
		
	Exercise Schedule:	  	Same as Vesting Schedule
		
	Vesting Schedule:	  	[____________________________, subject to Optionholder’s Continuous Service as of each such date]
		
	Payment:	  	By one or a combination of the following items (described in the Option Agreement):
		
		  	☐    By cash, check, bank draft or money order payable to the Company
		
		  	☐    Pursuant to a Regulation T Program if the shares are publicly traded
		
		  	☐    By delivery of already-owned shares if the shares are publicly traded
		
		  	☐    If and only to the extent this option is a Nonstatutory Stock Option, and subject to the Company’s consent at the time of exercise, by a “net exercise” arrangement

 Additional Terms/Acknowledgements: Optionholder acknowledges receipt of, and understands and agrees to, this Stock
Option Grant Notice, the Option Agreement and the Plan. Optionholder acknowledges and agrees that this Stock Option Grant Notice and the Option Agreement may not be modified, amended or revised except as provided in the Plan. Optionholder further
acknowledges that as of the Date of Grant, this Stock Option Grant Notice, the Option Agreement, and the Plan set forth the entire understanding between Optionholder and the Company regarding this option award and supersede all prior oral and
written agreements, promises and/or representations on that subject with the exception, 
  

	1 	 If this is an Incentive Stock Option, it (plus other outstanding Incentive Stock Options) 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. 



  
 1. 













 
if applicable, of (i) equity awards previously granted and delivered to Optionholder, (ii) any compensation recovery policy that is adopted by the Company or is otherwise required by
applicable law and (iii) any written employment or severance arrangement that would provide for vesting acceleration of this option upon the terms and conditions set forth therein. 

By accepting this option, Optionholder consents to receive such documents by electronic delivery and to participate in the Plan through an online or
electronic system established and maintained by the Company or another third party designated by the Company. 
  

									
	HEALTH SCIENCES ACQUISITIONS CORPORATION	 		 	OPTIONHOLDER:
				
	By:	 	 	 		 	 
		 	Signature	 		 		 	Signature
					
	Title:	 	 	 		 	Date:	 	 
					
	Date:	 	 	 		 		 	

 ATTACHMENTS: Option Agreement, 2019 Equity Incentive Plan and Notice of Exercise 

  
 2. 













 ATTACHMENT I 

OPTION AGREEMENT 












 HEALTH SCIENCES ACQUISITIONS
CORPORATION 
 2019 EQUITY INCENTIVE PLAN 

OPTION AGREEMENT 

(INCENTIVE STOCK OPTION OR NONSTATUTORY STOCK
OPTION) 
 Pursuant to your Stock Option Grant Notice (“Grant Notice”) and this Option Agreement,
Health Sciences Acquisitions Corporation (the “Company”) has granted you an option under its 2019 Equity Incentive Plan (the “Plan”) to purchase the number of shares of the Company’s Common Stock
(the “Shares”) indicated in your Grant Notice at the exercise price indicated in your Grant Notice. The option is granted to you effective as of the date of grant set forth in the Grant Notice (the “Date of
Grant”). If there is any conflict between the terms in this Option Agreement and the Plan, the terms of the Plan will control. Capitalized terms not explicitly defined in this Option Agreement or in the Grant Notice but defined in the
Plan will have the same definitions as in the Plan. 
 The details of your option, in addition to those set forth in the Grant Notice and
the Plan, are as follows: 
 1. VESTING. Subject to the provisions contained herein, your option will vest as
provided in your Grant Notice. Vesting will cease upon the termination of your Continuous Service. 
 2. NUMBER
OF SHARES AND EXERCISE PRICE. The number of Shares subject to your option and your exercise price per share in your Grant Notice will be adjusted for
Capitalization Adjustments. 
 3. EXERCISE RESTRICTION FOR
NON-EXEMPT EMPLOYEES. If you are an Employee eligible for overtime compensation under the Fair Labor Standards Act of 1938, as amended (that is, a “Non-Exempt Employee”), and except as otherwise provided in the Plan, you may not exercise your option until you have completed at least six (6) months of Continuous Service measured from the Date
of Grant, even if you have already been an employee for more than six (6) months. Consistent with the provisions of the Worker Economic Opportunity Act, you may exercise your option as to any vested portion prior to such six (6) month
anniversary in the case of (i) your death or disability, (ii) a Corporate Transaction in which your option is not assumed, continued or substituted, (iii) a Change in Control or (iv) your termination of Continuous Service on your
“retirement” (as defined in the Company’s benefit plans). 
 4. METHOD OF
PAYMENT. You must pay the full amount of the exercise price for the shares you wish to exercise. You may pay the exercise price in cash or by check, bank draft or money order payable to the Company or in any other
manner permitted by your Grant Notice, which may include one or more of the following: 
 (a) Provided that at
the time of exercise the Shares are publicly traded, pursuant to a program developed under Regulation T as promulgated by the Federal Reserve Board that, prior to the issuance of Shares, results in either the receipt of cash (or check) by the
Company or the receipt of irrevocable instructions to pay the aggregate exercise price to the Company from the sales proceeds. This manner of payment is also known as a “broker-assisted exercise”, “same day sale”, or “sell
to cover”. 
 (b) Provided that at the time of exercise the Shares are publicly traded, by delivery to the Company (either by
actual delivery or attestation) of already-owned Shares that are owned free and clear of any liens, claims, encumbrances or security interests, and that are valued at Fair Market Value on the date of exercise. “Delivery” for these
purposes, in the sole discretion of the Company at the time you 

  
 1. 













 
exercise your option, will include delivery to the Company of your attestation of ownership of such Shares in a form approved by the Company. You may not exercise your option by delivery to the
Company of Shares if doing so would violate the provisions of any law, regulation or agreement restricting the redemption of the Company’s Common Stock. 

(c) If this option is a Nonstatutory Stock Option, subject to the consent of the Company at the time of exercise, by a “net
exercise” arrangement pursuant to which the Company will reduce the number of Shares issued upon exercise of your option by the largest whole number of shares with a Fair Market Value that does not exceed the aggregate exercise price. You must
pay any remaining balance of the aggregate exercise price not satisfied by the “net exercise” in cash or other permitted form of payment. Shares will no longer be outstanding under your option and will not be exercisable thereafter if
those shares (i) are used to pay the exercise price pursuant to the “net exercise,” (ii) are delivered to you as a result of such exercise, and (iii) are withheld to satisfy your tax withholding obligations. 

5. WHOLE SHARES. You may exercise your option only for whole Shares. 

6. SECURITIES LAW COMPLIANCE. In no event may you exercise your
option unless the Shares issuable upon exercise are then registered under the Securities Act or, if not registered, the Company has determined that your exercise and the issuance of the shares would be exempt from the registration requirements of
the Securities Act. The exercise of your option also must comply with all other applicable laws and regulations governing your option, and you may not exercise your option if the Company determines that such exercise would not be in material
compliance with such laws and regulations (including any restrictions on exercise required for compliance with Treas. Reg. 1.401(k)-1(d)(3), if applicable). 

7. TERM. You may not exercise your option before the Date of Grant or after the expiration of the
option’s term. The term of your option expires, subject to the provisions of Sections 5(h) and 9(c) of the Plan, upon the earliest of the following: 

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

(b) three (3) months after the termination of your Continuous Service for any reason other than Cause, your Disability or your
death (except as otherwise provided in Section 7(d) below); provided, however, that if during any part of such three (3) month period your option is not exercisable solely because of the condition set forth in the section above
relating to “Securities Law Compliance,” your option will not expire until the earlier of the Expiration Date or until it has been exercisable for an aggregate period of three (3) months after the termination of your Continuous
Service; provided further, if during any part of such three (3) month period, the sale of any Shares received upon exercise of your option would violate the Company’s insider trading policy, then your option will not expire until
the earlier of the Expiration Date or until it has been exercisable for an aggregate period of three (3) months after the termination of your Continuous Service during which the sale of the Shares received upon exercise of your option would not
be in violation of the Company’s insider trading policy. Notwithstanding the foregoing, if (i) you are a Non-Exempt Employee, (ii) your Continuous Service terminates within six (6) months
after the Date of Grant, and (iii) you have vested in a portion of your option at the time of your termination of Continuous Service, your option will not expire until the earlier of (x) the later of (A) the date that is seven
(7) months after the Date of Grant, and (B) the date that is three (3) months after the termination of your Continuous Service, and (y) the Expiration Date; 

(c) twelve (12) months after the termination of your Continuous Service due to your Disability (except as otherwise provided in
Section 7(d)) below; 

  
 2. 













 (d) eighteen (18) months after your death if you die either during your
Continuous Service or within three (3) months after your Continuous Service terminates for any reason other than Cause; 
 (e)
the Expiration Date indicated in your Grant Notice; or 
 (f) the day before the tenth (10th) anniversary of the Date of Grant. 

If your option is an Incentive Stock Option, note that 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 and ending on the day three (3) 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. The Company has provided for extended exercisability of your option under certain circumstances for your benefit but cannot guarantee that your option will necessarily be treated as an Incentive Stock Option if you continue to provide
services to the Company or an Affiliate as a Consultant or Director after your employment terminates or if you otherwise exercise your option more than three (3) months after the date your employment with the Company or an Affiliate terminates.

 8. EXERCISE. 

(a) You may exercise the vested portion of your option (and the unvested portion of your option if your Grant Notice so permits) during
its term by (i) delivering a Notice of Exercise (in a form designated by the Company) or completing such other documents and/or procedures designated by the Company for exercise and (ii) paying the exercise price and any applicable
withholding taxes to the Company’s Secretary, stock plan administrator, or such other person as the Company may designate, together with such additional documents as the Company may then require. 

(b) By exercising your option you agree that, as a condition to any exercise of your option, the Company may require you to enter into
an arrangement providing for the payment by you to the Company of any tax withholding obligation of the Company arising by reason of (i) the exercise of your option, (ii) the lapse of any substantial risk of forfeiture to which the Shares
are subject at the time of exercise, or (iii) the disposition of Shares acquired upon such exercise. 
 (c) If your option is an
Incentive Stock Option, by exercising your option you agree that you will notify the Company in writing within fifteen (15) days after the date of any disposition of any of the Shares issued upon exercise of your option that occurs within two
(2) years after the Date of Grant or within one (1) year after such Shares are transferred upon exercise of your option. 

9. TRANSFERABILITY. Except as otherwise provided in this Section 9, your option is not
transferable, except by will or by the laws of descent and distribution, and is exercisable during your life only by you. 
 (a)
Certain Trusts. Upon receiving written permission from the Board or its duly authorized designee, you may transfer your option to a trust if you are considered to be the sole beneficial owner (determined under Section 671 of the Code and
applicable state law) while the option is held in the trust. You and the trustee must enter into transfer and other agreements required by the Company. 

(b) Domestic Relations Orders. Upon receiving written permission from the Board or its duly authorized designee, and provided
that you and the designated transferee enter into transfer and other agreements required by the Company, you may transfer your option pursuant to the terms of a domestic relations order, official marital settlement agreement or other divorce or
separation instrument 

  
 3. 













 
as permitted by Treasury Regulation 1.421-1(b)(2) that contains the information required by the Company to effectuate the transfer. You are encouraged to
discuss the proposed terms of any division of this option with the Company prior to finalizing the domestic relations order or marital settlement agreement to help ensure the required information is contained within the domestic relations order or
marital settlement agreement. If this option is an Incentive Stock Option, this option may be deemed to be a Nonstatutory Stock Option as a result of such transfer. 

(c) Beneficiary Designation. Upon receiving written permission from the Board or its duly authorized designee, you may, by
delivering written notice to the Company, in a form approved by the Company and any broker designated by the Company to handle option exercises, designate a third party who, on your death, will thereafter be entitled to exercise this option and
receive the Shares or other consideration resulting from such exercise. In the absence of such a designation, your executor or administrator of your estate will be entitled to exercise this option and receive, on behalf of your estate, the Shares or
other consideration resulting from such exercise. 
 10. OPTION NOT A
SERVICE CONTRACT. Your option is not an employment or service contract, and nothing in your option will be deemed to create in any way whatsoever any obligation on your part to continue in the employ
of the Company or an Affiliate, or of the Company or an Affiliate to continue your employment. In addition, nothing in your option will obligate the Company or an Affiliate, their respective stockholders, boards of directors, officers or employees
to continue any relationship that you might have as a Director or Consultant for the Company or an Affiliate. 
 11.
WITHHOLDING OBLIGATIONS. 
 (a) At the time you exercise your option, in whole or
in part, and 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 “same day
sale” 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 of the
Company or an Affiliate, if any, which arise in connection with the exercise of your option. 
 (b) If this option is a Nonstatutory
Stock Option, then upon your request and subject to approval by the Company, and compliance with any applicable legal conditions or restrictions, the Company may withhold from fully vested Shares otherwise issuable to you upon the exercise of your
option a number of whole Shares having a Fair Market Value, determined by the Company as of the date of exercise, not in excess of the minimum amount of tax required to be withheld by law (or such lower amount as may be necessary to avoid
classification of your option as a liability for financial accounting purposes). Notwithstanding the filing of such election, Shares shall be withheld solely from fully vested Shares determined as of the date of exercise of your option that are
otherwise issuable to you upon such exercise. Any adverse consequences to you arising in connection with such share withholding procedure shall be your sole responsibility. 

(c) You may not exercise your option unless the tax withholding obligations of the Company and/or any Affiliate are satisfied.
Accordingly, you may not be able to exercise your option when desired even though your option is vested, and the Company will have no obligation to issue a certificate for such Shares or release such Shares from any escrow provided for herein, if
applicable, unless such obligations are satisfied. 
 12. TAX CONSEQUENCES. You
hereby agree that the Company does not have a duty to design or administer the Plan or its other compensation programs in a manner that minimizes your tax 

  
 4. 













 
liabilities. You will not make any claim against the Company, or any of its Officers, Directors, Employees or Affiliates related to tax liabilities arising from your option or your other
compensation. In particular, you acknowledge that this option is exempt from Section 409A of the Code only if the exercise price per share specified in the Grant Notice is at least equal to the “fair market value” per
share of the Company’s Common Stock on the Date of Grant and there is no other impermissible deferral of compensation associated with the option. 

13. NOTICES. Any notices provided for in your option or the Plan will be given in writing
(including electronically) and will be deemed effectively given upon receipt or, in the case of notices delivered by mail by the Company to you, five (5) days after deposit in the United States mail, postage prepaid, addressed to you at the
last address you provided to the Company. The Company may, in its sole discretion, decide to deliver any documents related to participation in the Plan and this option by electronic means or to request your consent to participate in the Plan by
electronic means. By accepting this option, you consent to receive such 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. 
 14. GOVERNING PLAN
DOCUMENT. Your option is subject to all the provisions of the Plan, the provisions of which are hereby made a part of your option, and is further subject to all interpretations, amendments, rules and regulations,
which may from time to time be promulgated and adopted pursuant to the Plan. If there is any conflict between the provisions of your option and those of the Plan, the provisions of the Plan will control. In addition, your option (and any
compensation paid or shares issued under your option) is subject to recoupment in accordance with The Dodd–Frank Wall Street Reform and Consumer Protection Act and any implementing regulations thereunder, any clawback policy adopted by the
Company and any compensation recovery policy otherwise required by applicable law. No recovery of compensation under such a clawback policy will be an event giving rise to a 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. 

15. OTHER DOCUMENTS. You hereby acknowledge receipt of and the right to receive a
document providing the information required by Rule 428(b)(1) promulgated under the Securities Act, which includes the Plan prospectus. In addition, you acknowledge receipt of the Company’s policy permitting certain individuals to sell shares
only during certain “window” periods and the Company’s insider trading policy, in effect from time to time. 
 16.
EFFECT ON OTHER EMPLOYEE BENEFIT PLANS. The value of this option will not be included as compensation, earnings, salaries, or other
similar terms used when calculating your 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. 
 17. VOTING
RIGHTS. You will not have voting or any other rights as a stockholder of the Company with respect to the shares to be issued pursuant to this option until such shares are issued to you. Upon such issuance, you will
obtain full voting and other rights as a stockholder of the Company. Nothing contained in this option, 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 you
and the Company or any other person. 
 18. SEVERABILITY. If all or 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


  
 5. 













 
Section of this Option 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. 
 19.
MISCELLANEOUS. 
 (a) The rights and obligations of the Company under your option will be
transferable to any one or more persons or entities, and all covenants and agreements hereunder will inure to the benefit of, and be enforceable by the Company’s successors and assigns. 

(b) You agree upon request to execute any further documents or instruments necessary or desirable in the sole determination of the
Company to carry out the purposes or intent of your option. 
 (c) You acknowledge and agree that you have reviewed your option in
its entirety, have had an opportunity to obtain the advice of counsel prior to executing and accepting your option, and fully understand all provisions of your option. 

(d) This Option Agreement will be subject to all applicable laws, rules, and regulations, and to such approvals by any governmental
agencies or national securities exchanges as may be required. 
 (e) All obligations of the Company under the Plan and this Option
Agreement will be binding on any successor to the Company, whether the existence of such successor is the result of a direct or indirect purchase, merger, consolidation, or otherwise, of all or substantially all of the business and/or assets of the
Company. 
 *        *        * 

This Option Agreement will be deemed to be signed by you upon the signing by you of the Grant Notice to which it is attached. 

  
 6. 













 ATTACHMENT II 

2019 EQUITY INCENTIVE PLAN 












 ATTACHMENT III 

NOTICE OF EXERCISE 












 NOTICE OF EXERCISE 

Health Sciences Acquisitions Corporation 
 Attention: Stock Plan
Administrator 
 Date of Exercise: ______________ 

This constitutes notice to Health Sciences Acquisitions Corporation (the “Company”) under my stock option that I elect
to purchase the below number of shares of Common Stock of the Company (the “Shares”) for the price set forth below. 
  

									
	Type of option (check one):	  	Incentive ☐	 	  	Nonstatutory ☐	 
	 Stock option dated:
	  	 	________	 	  	 	________	 
	 Number of Shares as to which option is exercised:
	  	 	________	 	  	 	________	 
	 Certificates to be issued in name of:
	  	 	________	 	  	 	________	 
	 Total exercise price:
	  	$	________	 	  	$	________	 
	 Cash payment delivered herewith:
	  	$	________	 	  	$	________	 
	 [Value of ________ Shares delivered
herewith2:
	  	$	________	 	  	$	________	] 
	 [Value of ________ Shares pursuant to net
exercise3:
	  	$	________	 	  	$	________	] 
	 [Regulation T Program (cashless exercise):
	  	$	________	 	  	$	________	]4 

 By this exercise, I agree (i) to provide such additional documents as you may require pursuant to the
terms of the Health Sciences Acquisitions Corporation 2019 Equity Incentive Plan, (ii) to provide for the payment by me to you (in the manner designated by you) of your withholding obligation, if any, relating to the exercise of this option,
and (iii) if this exercise relates to an Incentive Stock Option, to notify you in writing within fifteen (15) days after the date of any disposition of any of the Shares issued upon exercise of this option that occurs within two
(2) years after the date of grant of this option or within one (1) year after such Shares are issued upon exercise of this option. 
  

	
	Very truly yours,
	
	 


  

	2 	 Shares must meet the public trading requirements set forth in the option. Shares must be valued in accordance
with the terms of the option being exercised, and must be owned free and clear of any liens, claims, encumbrances or security interests. Certificates must be endorsed or accompanied by an executed assignment separate from certificate.




	3 	 The option must be a Nonstatutory Stock Option, and the Company must have established net exercise procedures
at the time of exercise, in order to utilize this payment method. 



	4 	 Delete bracketed methods of payment that are not provided for in the grant notice. 














 HEALTH SCIENCES ACQUISITIONS
CORPORATION 
 STOCK OPTION GRANT NOTICE (NON-EMPLOYEE DIRECTOR) 
 (2019 EQUITY
INCENTIVE PLAN) 
 Health Sciences Acquisitions Corporation (the “Company”), pursuant to its 2019
Equity Incentive Plan (the “Plan”), hereby grants to Optionholder an option to purchase the number of shares of the Company’s Common Stock set forth below. This option is subject to all of the terms and conditions as set
forth in this notice, in the Option Agreement, the Plan 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 Option
Agreement will have the same definitions as in the Plan or the Option Agreement. If there is any conflict between the terms in this notice and the Plan, the terms of the Plan will control. 

 

			
	Optionholder:	  	  

	ID:	  	  

	Date of Grant:	  	  

	Grant Number:	  	  

	Vesting Commencement Date:	  	  

	Number of Shares Subject to Option:	  	  

	Exercise Price (Per Share):	  	  

	Total Exercise Price:	  	  

	Expiration Date:	  	  



 

			
	Type of Grant:	  	☐ Nonstatutory Stock Option
		
	Exercise Schedule:	  	Same as Vesting Schedule
		
	Vesting Schedule:	  	[____________________________, subject to Optionholder’s Continuous Service as of each such date]
		
	Payment:	  	By one or a combination of the following items (described in the Option Agreement):
		
		  	☐ By cash, check, bank draft or money order payable to the Company
		
		  	☐ Pursuant to a Regulation T Program if the shares are publicly traded
		
		  	☐ By delivery of already-owned shares if the shares are publicly traded
		
		  	☐ If and only to the extent this option is a Nonstatutory Stock Option, and subject to the Company’s consent at the time of exercise, by a “net exercise” arrangement

 Additional Terms/Acknowledgements: Optionholder acknowledges receipt of, and understands and agrees to, this Stock
Option Grant Notice, the Option Agreement and the Plan. Optionholder acknowledges and agrees that this Stock Option Grant Notice and the Option Agreement may not be modified, amended or revised except as provided in the Plan. Optionholder further
acknowledges that as of the Date of Grant, this Stock Option Grant Notice, the Option Agreement, and the Plan set forth the entire understanding between Optionholder and the Company regarding this option award and supersede all prior oral and
written agreements, promises and/or representations on that subject with the exception, if applicable, of (i) equity awards previously granted and delivered to Optionholder, (ii) any compensation recovery policy that is adopted by the
Company or is otherwise required by applicable law and (iii) any written employment or severance arrangement that would provide for vesting acceleration of this option upon the terms and conditions set forth therein. 

  
 1. 













 By accepting this option, Optionholder consents to receive such documents by electronic delivery and to
participate in the Plan through an online or electronic system established and maintained by the Company or another third party designated by the Company. 
  

									
	HEALTH SCIENCES ACQUISITIONS CORPORATION	 	            	  	OPTIONHOLDER:
				
	By:	 	  
	 		  	  

		 	Signature	 		  		  	Signature
					
	Title:	 	  
	 		  	Date:	  	  

					
	Date:	 	  
	 		  		  	

 ATTACHMENTS: Option Agreement, 2019 Equity Incentive Plan and Notice of Exercise 

  
 2. 













 ATTACHMENT I 

OPTION AGREEMENT 












 HEALTH SCIENCES ACQUISITIONS
CORPORATION 
 2019 EQUITY INCENTIVE PLAN 

NON-EMPLOYEE DIRECTOR OPTION
AGREEMENT 
 (NONSTATUTORY STOCK OPTION) 

Pursuant to your Stock Option Grant Notice (“Grant Notice”) and this Option Agreement, Health Sciences Acquisitions
Corporation (the “Company”) has granted you an option under its 2019 Equity Incentive Plan (the “Plan”) to purchase the number of shares of the Company’s Common Stock (the
“Shares”) indicated in your Grant Notice at the exercise price indicated in your Grant Notice. The option is granted to you effective as of the date of grant set forth in the Grant Notice (the “Date of
Grant”). If there is any conflict between the terms in this Option Agreement and the Plan, the terms of the Plan will control. Capitalized terms not explicitly defined in this Option Agreement or in the Grant Notice but defined in the
Plan will have the same definitions as in the Plan. 
 The details of your option, in addition to those set forth in the Grant Notice and
the Plan, are as follows: 
 1. VESTING. Subject to the provisions contained herein, your option will vest as
provided in your Grant Notice. Vesting will cease upon the termination of your Continuous Service. 
 2. NUMBER
OF SHARES AND EXERCISE PRICE. The number of Shares subject to your option and your exercise price per share in your Grant Notice will be adjusted for
Capitalization Adjustments. 
 3. EXERCISE RESTRICTION FOR
NON-EXEMPT EMPLOYEES. If you are an Employee eligible for overtime compensation under the Fair Labor Standards Act of 1938, as amended (that is, a “Non-Exempt Employee”), and except as otherwise provided in the Plan, you may not exercise your option until you have completed at least six (6) months of Continuous Service measured from the Date
of Grant, even if you have already been an employee for more than six (6) months. Consistent with the provisions of the Worker Economic Opportunity Act, you may exercise your option as to any vested portion prior to such six (6) month
anniversary in the case of (i) your death or disability, (ii) a Corporate Transaction in which your option is not assumed, continued or substituted, (iii) a Change in Control or (iv) your termination of Continuous Service on your
“retirement” (as defined in the Company’s benefit plans). 
 4. METHOD OF
PAYMENT. You must pay the full amount of the exercise price for the shares you wish to exercise. You may pay the exercise price in cash or by check, bank draft or money order payable to the Company or in any other
manner permitted by your Grant Notice, which may include one or more of the following: 
 (a) Provided that at
the time of exercise the Shares are publicly traded, pursuant to a program developed under Regulation T as promulgated by the Federal Reserve Board that, prior to the issuance of Shares, results in either the receipt of cash (or check) by the
Company or the receipt of irrevocable instructions to pay the aggregate exercise price to the Company from the sales proceeds. This manner of payment is also known as a “broker-assisted exercise”, “same day sale”, or “sell
to cover”. 
 (b) Provided that at the time of exercise the Shares are publicly traded, by delivery to the Company (either by
actual delivery or attestation) of already-owned Shares that are owned free and clear of any liens, claims, encumbrances or security interests, and that are valued at Fair Market Value on the date of exercise. “Delivery” for these
purposes, in the sole discretion of the Company at the time you 

  
 1. 













 
exercise your option, will include delivery to the Company of your attestation of ownership of such Shares in a form approved by the Company. You may not exercise your option by delivery to the
Company of Shares if doing so would violate the provisions of any law, regulation or agreement restricting the redemption of the Company’s Common Stock. 

(c) If this option is a Nonstatutory Stock Option, subject to the consent of the Company at the time of exercise, by a “net
exercise” arrangement pursuant to which the Company will reduce the number of Shares issued upon exercise of your option by the largest whole number of shares with a Fair Market Value that does not exceed the aggregate exercise price. You must
pay any remaining balance of the aggregate exercise price not satisfied by the “net exercise” in cash or other permitted form of payment. Shares will no longer be outstanding under your option and will not be exercisable thereafter if
those shares (i) are used to pay the exercise price pursuant to the “net exercise,” (ii) are delivered to you as a result of such exercise, and (iii) are withheld to satisfy your tax withholding obligations. 

5. WHOLE SHARES. You may exercise your option only for whole Shares. 

6. SECURITIES LAW COMPLIANCE. In no event may you exercise your
option unless the Shares issuable upon exercise are then registered under the Securities Act or, if not registered, the Company has determined that your exercise and the issuance of the shares would be exempt from the registration requirements of
the Securities Act. The exercise of your option also must comply with all other applicable laws and regulations governing your option, and you may not exercise your option if the Company determines that such exercise would not be in material
compliance with such laws and regulations (including any restrictions on exercise required for compliance with Treas. Reg. 1.401(k)-1(d)(3), if applicable). 

7. TERM. You may not exercise your option before the Date of Grant or after the expiration of the
option’s term. The term of your option expires, subject to the provisions of Sections 5(h) and 9(c) of the Plan, upon the earliest of the following: 

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

(b) five (5) years after the termination of your Continuous Service for any reason other than Cause; 

(c) twelve (12) months after the termination of your Continuous Service due to your Disability (except as otherwise provided in
Section 7(d) below); 
 (d) eighteen (18) months after your death if you die either during your Continuous Service or within
three (3) months after your Continuous Service terminates for any reason other than Cause; 
 (e) the Expiration Date indicated
in your Grant Notice; or 
 (f) the day before the tenth (10th) anniversary of the Date of Grant. 

8. EXERCISE. 

(a) You may exercise the vested portion of your option (and the unvested portion of your option if your Grant Notice so permits) during
its term by (i) delivering a Notice of Exercise (in a form designated by the Company) or completing such other documents and/or procedures designated by the Company for exercise and (ii) paying the exercise price and any applicable
withholding taxes to the 

  
 2. 













 
Company’s Secretary, stock plan administrator, or such other person as the Company may designate, together with such additional documents as the Company may then require. 

(b) By exercising your option you agree that, as a condition to any exercise of your option, the Company may require you to enter into
an arrangement providing for the payment by you to the Company of any tax withholding obligation of the Company arising by reason of (i) the exercise of your option, (ii) the lapse of any substantial risk of forfeiture to which the Shares
are subject at the time of exercise, or (iii) the disposition of Shares acquired upon such exercise. 
 9.
TRANSFERABILITY. Except as otherwise provided in this Section 9, your option is not transferable, except by will or by the laws of descent and distribution, and is exercisable during your life only by
you. 
 (a) Certain Trusts. Upon receiving written permission from the Board or its duly authorized designee, you may transfer your
option to a trust if you are considered to be the sole beneficial owner (determined under Section 671 of the Code and applicable state law) while the option is held in the trust. You and the trustee must enter into transfer and other agreements
required by the Company. 
 (b) Domestic Relations Orders. Upon receiving written permission from the Board or its duly authorized
designee, and provided that you and the designated transferee enter into transfer and other agreements required by the Company, you may transfer your option pursuant to the terms of a domestic relations order, official marital settlement agreement
or other divorce or separation instrument as permitted by Treasury Regulation 1.421-1(b)(2) that contains the information required by the Company to effectuate the transfer. You are encouraged to discuss the
proposed terms of any division of this option with the Company prior to finalizing the domestic relations order or marital settlement agreement to help ensure the required information is contained within the domestic relations order or marital
settlement agreement. 
 (c) Beneficiary Designation. Upon receiving written permission from the Board or its duly authorized
designee, you may, by delivering written notice to the Company, in a form approved by the Company and any broker designated by the Company to handle option exercises, designate a third party who, on your death, will thereafter be entitled to
exercise this option and receive the Shares or other consideration resulting from such exercise. In the absence of such a designation, your executor or administrator of your estate will be entitled to exercise this option and receive, on behalf of
your estate, the Shares or other consideration resulting from such exercise. 
 10. OPTION NOT
A SERVICE CONTRACT. Your option is not an employment or service contract, and nothing in your option will be deemed to create in any way whatsoever any obligation on your part to
continue in the employ of the Company or an Affiliate, or of the Company or an Affiliate to continue your employment. In addition, nothing in your option will obligate the Company or an Affiliate, their respective stockholders, boards of directors,
officers or employees to continue any relationship that you might have as a Director or Consultant for the Company or an Affiliate. 

11. WITHHOLDING OBLIGATIONS. 

(a) At the time you exercise your option, in whole or in part, and 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 “same day sale” 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, 

  
 3. 













 
local and foreign tax withholding obligations of the Company or an Affiliate, if any, which arise in connection with the exercise of your option. 

(b) If this option is a Nonstatutory Stock Option, then upon your request and subject to approval by the Company, and compliance with
any applicable legal conditions or restrictions, the Company may withhold from fully vested Shares otherwise issuable to you upon the exercise of your option a number of whole Shares having a Fair Market Value, determined by the Company as of the
date of exercise, not in excess of the minimum amount of tax required to be withheld by law (or such lower amount as may be necessary to avoid classification of your option as a liability for financial accounting purposes). Notwithstanding the
filing of such election, Shares shall be withheld solely from fully vested Shares determined as of the date of exercise of your option that are otherwise issuable to you upon such exercise. Any adverse consequences to you arising in connection with
such share withholding procedure shall be your sole responsibility. 
 (c) You may not exercise your option unless the tax withholding
obligations of the Company and/or any Affiliate are satisfied. Accordingly, you may not be able to exercise your option when desired even though your option is vested, and the Company will have no obligation to issue a certificate for such Shares or
release such Shares from any escrow provided for herein, if applicable, unless such obligations are satisfied. 
 12.
TAX CONSEQUENCES. You hereby agree that the Company does not have a duty to design or administer the Plan or its other compensation programs in a manner that minimizes your tax liabilities. You
will not make any claim against the Company, or any of its Officers, Directors, Employees or Affiliates related to tax liabilities arising from your option or your other compensation. In particular, you acknowledge that this option is exempt from
Section 409A of the Code only if the exercise price per share specified in the Grant Notice is at least equal to the “fair market value” per share of the Company’s Common Stock on the Date of Grant and there is no
other impermissible deferral of compensation associated with the option. 
 13. NOTICES. Any
notices provided for in your option or the Plan will be given in writing (including electronically) and will be deemed effectively given upon receipt or, in the case of notices delivered by mail by the Company to you, five (5) days after
deposit in the United States mail, postage prepaid, addressed to you at the last address you provided to the Company. The Company may, in its sole discretion, decide to deliver any documents related to participation in the Plan and this option by
electronic means or to request your consent to participate in the Plan by electronic means. By accepting this option, you consent to receive such 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. 

14. GOVERNING PLAN DOCUMENT. Your option is subject to all the
provisions of the Plan, the provisions of which are hereby made a part of your option, and is further subject to all interpretations, amendments, rules and regulations, which may from time to time be promulgated and adopted pursuant to the Plan. If
there is any conflict between the provisions of your option and those of the Plan, the provisions of the Plan will control. In addition, your option (and any compensation paid or shares issued under your option) is subject to recoupment in
accordance with The Dodd–Frank Wall Street Reform and Consumer Protection Act and any implementing regulations thereunder, any clawback policy adopted by the Company and any compensation recovery policy otherwise required by applicable law. No
recovery of compensation under such a clawback policy will be an event giving rise to a 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. 

  
 4. 













 15. OTHER DOCUMENTS. You hereby
acknowledge receipt of and the right to receive a document providing the information required by Rule 428(b)(1) promulgated under the Securities Act, which includes the Plan prospectus. In addition, you acknowledge receipt of the Company’s
policy permitting certain individuals to sell shares only during certain “window” periods and the Company’s insider trading policy, in effect from time to time. 

16. EFFECT ON OTHER EMPLOYEE BENEFIT
PLANS. The value of this option will not be included as compensation, earnings, salaries, or other similar terms used when calculating your 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. 

17. VOTING RIGHTS. You will not have voting or any other rights as a stockholder of
the Company with respect to the shares to be issued pursuant to this option until such shares are issued to you. Upon such issuance, you will obtain full voting and other rights as a stockholder of the Company. Nothing contained in this option, 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 you and the Company or any other person. 

18. SEVERABILITY. If all or 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 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. 

19. MISCELLANEOUS. 

(a) The rights and obligations of the Company under your option will be transferable to any one or more persons or entities, and all
covenants and agreements hereunder will inure to the benefit of, and be enforceable by the Company’s successors and assigns. 
 (b)
You agree upon request to execute any further documents or instruments necessary or desirable in the sole determination of the Company to carry out the purposes or intent of your option. 

(c) You acknowledge and agree that you have reviewed your option in its entirety, have had an opportunity to obtain the advice of
counsel prior to executing and accepting your option, and fully understand all provisions of your option. 
 (d) This Option Agreement
will be subject to all applicable laws, rules, and regulations, and to such approvals by any governmental agencies or national securities exchanges as may be required. 

(e) All obligations of the Company under the Plan and this Option Agreement will be binding on any successor to the Company, whether the
existence of such successor is the result of a direct or indirect purchase, merger, consolidation, or otherwise, of all or substantially all of the business and/or assets of the Company. 

*         *         * 

  
 5. 













 This Option Agreement will be deemed to be signed by you upon the signing by you of the Grant Notice to
which it is attached. 
  

  
 6. 













 ATTACHMENT II 

2019 EQUITY INCENTIVE PLAN 












 ATTACHMENT III 

NOTICE OF EXERCISE 












 NOTICE OF EXERCISE 

Health Sciences Acquisitions Corporation 
 Attention: Stock Plan
Administrator 
 Date of Exercise: ______________ 

This constitutes notice to Health Sciences Acquisitions Corporation (the “Company”) under my stock option that I elect
to purchase the below number of shares of Common Stock of the Company (the “Shares”) for the price set forth below. 
  

									
	Type of option (check one):	  	Incentive ☐	 	  	Nonstatutory ☐	 
	 Stock option dated:
	  	 	________	 	  	 	________	 
	 Number of Shares as to which option is exercised:
	  	 	________	 	  	 	________	 
	 Certificates to be issued in name of:
	  	 	________	 	  	 	________	 
	 Total exercise price:
	  	$	________	 	  	$	________	 
	 Cash payment delivered herewith:
	  	$	________	 	  	$	________	 
	 [Value of ________ Shares delivered
herewith3:
	  	$	________	 	  	$	________	] 
	 [Value of ________ Shares pursuant to net
exercise2:
	  	$	________	 	  	$	________	] 
	 [Regulation T Program (cashless exercise):
	  	$	________	 	  	$	________	]1 

 By this exercise, I agree (i) to provide such additional documents as you may require pursuant to the
terms of the Health Sciences Acquisitions Corporation 2019 Equity Incentive Plan, (ii) to provide for the payment by me to you (in the manner designated by you) of your withholding obligation, if any, relating to the exercise of this option,
and (iii) if this exercise relates to an Incentive Stock Option, to notify you in writing within fifteen (15) days after the date of any disposition of any of the Shares issued upon exercise of this option that occurs within two
(2) years after the date of grant of this option or within one (1) year after such Shares are issued upon exercise of this option. 
  

	
	 Very truly yours,
  



  

	3 	 Shares must meet the public trading requirements set forth in the option. Shares must be valued in accordance
with the terms of the option being exercised, and must be owned free and clear of any liens, claims, encumbrances or security interests. Certificates must be endorsed or accompanied by an executed assignment separate from certificate.




	2 	 The option must be a Nonstatutory Stock Option, and the Company must have established net exercise procedures
at the time of exercise, in order to utilize this payment method. 



	1 	 Delete bracketed methods of payment that are not provided for in the grant notice.