Exhibit 10.4


 


REGISTRATION RIGHTS AGREEMENT


 


THIS REGISTRATION RIGHTS
AGREEMENT (this “Agreement”) is entered into as of the __ day of _________, 2020, by and among LifeSci
Acquisition II Corp., a Delaware corporation (the “Company”) and the undersigned parties listed under
Investor on the signature page hereto (each, an “Investor” and collectively, the “Investors”).


 


WHEREAS, the Investors
and the Company desire to enter into this Agreement to provide the Investors with certain rights relating to the registration of
the securities held by them as of the date hereof.


 


NOW, THEREFORE, in
consideration of the mutual covenants and agreements set forth herein, and for other good and valuable consideration, the receipt
and sufficiency of which are hereby acknowledged, the parties hereto agree as follows:


 


1.                 
DEFINITIONS. The following capitalized terms used herein have the following meanings:


 


“Agreement”
means this Agreement, as amended, restated, supplemented, or otherwise modified from time to time.


 


“Business
Combination” means the acquisition of direct or indirect ownership through a merger, share exchange, asset acquisition,
share purchase, recapitalization, reorganization or other similar type of transaction, of one or more businesses or entities.


 


“Commission”
means the Securities and Exchange Commission, or any other Federal agency then administering the Securities Act or the Exchange
Act.


 


“Common
Stock” means the common stock, par value $0.0001 per share, of the Company.


 


“Company”
is defined in the preamble to this Agreement.


 


“Demand
Registration” is defined in Section 2.1.1.


 


“Demanding
Holder” is defined in Section 2.1.1.


 


“Exchange
Act” means the Securities Exchange Act of 1934, as amended, and the rules and regulations of the Commission promulgated
thereunder, all as the same shall be in effect at the time.


 


“Form S-3”
is defined in Section 2.3.


 


“Indemnified
Party” is defined in Section 4.3.


 


“Indemnifying
Party” is defined in Section 4.3.


 


“Initial
Shares” means all of the outstanding shares of Common Stock issued prior to the consummation of the Company’s
initial public offering.


 






     


     


    

 


“Initial
Shareholders” means LifeSci Holdings LLC and Chardan Healthcare Investments LLC, each an Investor.


 


“Investor”
is defined in the preamble to this Agreement.


 


“Investor
Indemnified Party” is defined in Section 4.1.


 


“Maximum
Number of Shares” is defined in Section 2.1.4.


 


“Notices”
is defined in Section 6.3.


 


“Piggy-Back
Registration” is defined in Section 2.2.1.


 


“Private
Warrants” means the aggregate of 3,033,333 Warrants (or up to 3,283,333 Warrants if the over-allotment option
is exercised in full) LifeSci Holdings LLC is privately purchasing simultaneously with the consummation of the
Company’s initial public offering.


 


“Register,”
 “Registered” and “Registration” mean a registration effected by preparing and
filing a registration statement or similar document in compliance with the requirements of the Securities Act, and the applicable
rules and regulations promulgated thereunder, and such registration statement becoming effective.


 


“Registrable
Securities” means (i) the Initial Shares and (ii) the Private Warrants (and underlying shares of Common Stock). Registrable
Securities include any warrants, shares of capital stock or other securities of the Company issued as a dividend or other distribution
with respect to or in exchange for or in replacement of such Initial Shares and Private Warrants (and underlying shares of Common
Stock). As to any particular Registrable Securities, such securities shall cease to be Registrable Securities when: (a) a Registration
Statement with respect to the sale of such securities shall have become effective under the Securities Act and such securities
shall have been sold, transferred, disposed of or exchanged in accordance with such Registration Statement; (b) such securities
shall have been otherwise transferred, new certificates for them not bearing a legend restricting further transfer shall have been
delivered by the Company and subsequent public distribution of them shall not require registration under the Securities Act; (c)
such securities shall have ceased to be outstanding, or (d) the Registrable Securities are freely saleable under Rule 144 without
volume limitations.


 


“Registration
Statement” means a registration statement filed by the Company with the Commission in compliance with the Securities
Act and the rules and regulations promulgated thereunder for a public offering and sale of equity securities, or securities or
other obligations exercisable or exchangeable for, or convertible into, equity securities (other than a registration statement
on Form S-4 or Form S-8, or their successors, or any registration statement covering only securities proposed to be issued in exchange
for securities or assets of another entity).


 


“Release
Date” means the date on which the Initial Shares are disbursed from escrow pursuant to Section 3 of that certain
Stock Escrow Agreement dated as of ________, 2020 by and among the Initial Shareholders and Continental Stock Transfer & Trust
Company.


 






     


     


    

 


“Securities
Act” means the Securities Act of 1933, as amended, and the rules and regulations of the Commission promulgated thereunder,
all as the same shall be in effect at the time.


 


“Underwriter”
means a securities dealer who purchases any Registrable Securities as principal in an underwritten offering and not as part of
such dealer’s market-making activities.


 


“Warrant(s)”
means the warrants of the Company.


 


2.                 
REGISTRATION RIGHTS.


 


2.1             
Demand Registration.


 


2.1.1       
Request for Registration. At any time and from time to time on or after (i) the date that the Company consummates
a Business Combination with respect to the Private Warrants or (ii) three months prior to the Release Date with respect to all
other Registrable Securities, but prior to the five-year anniversary of the effective date of the Company’s Form S-1 Registration
Statement (File No. 333-_______) (the “Effective Date”), the holders of a majority-in-interest of the
Initial Shares, may make a written demand for registration under the Securities Act of all or part of their Private Warrants or
other Registrable Securities, as the case may be (a “Demand Registration”). Any demand for a Demand Registration
shall specify the number of shares of Registrable Securities proposed to be sold and the intended method(s) of distribution thereof.
The Company will notify all holders of Registrable Securities of the demand, and each holder of Registrable Securities who wishes
to include all or a portion of such holder’s Registrable Securities in the Demand Registration (each such holder including
shares of Registrable Securities in such registration, a “Demanding Holder”) shall so notify the Company
within fifteen (15) days after the receipt by the holder of the notice from the Company. Upon any such request, the Demanding Holders
shall be entitled to have their Registrable Securities included in the Demand Registration, subject to Section 2.1.4 and the provisos
set forth in Section 3.1.1. The Company shall not be obligated to effect more than one (1) Demand Registration under this Section
2.1.1 in respect of all Registrable Securities.


 


2.1.2       
Effective Registration. A registration will not count as a Demand Registration until the Registration Statement
filed with the Commission with respect to such Demand Registration has been declared effective and the Company has complied with
all of its obligations under this Agreement with respect thereto; provided, however, that if, after such Registration Statement
has been declared effective, the offering of Registrable Securities pursuant to a Demand Registration is interfered with by any
stop order or injunction of the Commission or any other governmental agency or court, the Registration Statement with respect to
such Demand Registration will be deemed not to have been declared effective, unless and until, (i) such stop order or injunction
is removed, rescinded or otherwise terminated, and (ii) a majority-in-interest of the Demanding Holders thereafter elect to continue
the offering; provided, further, that the Company shall not be obligated to file a second Registration Statement until a Registration
Statement that has been filed is counted as a Demand Registration or is terminated.


 






     


     


    

 


2.1.3        Underwritten
Offering. If a majority-in-interest of the Demanding Holders so elect and such holders so advise the Company as part of
their written demand for a Demand Registration, the offering of such Registrable Securities pursuant to such Demand
Registration shall be in the form of an underwritten offering. In such event, the right of any holder to include its
Registrable Securities in such registration shall be conditioned upon such holder’s participation in such underwriting
and the inclusion of such holder’s Registrable Securities in the underwriting to the extent provided herein. All
Demanding Holders proposing to distribute their Registrable Securities through such underwriting shall enter into an
underwriting agreement in customary form with the Underwriter or Underwriters selected for such underwriting by a
majority-in-interest of the holders initiating the Demand Registration.


 


2.1.4       
Reduction of Offering. If the managing Underwriter or Underwriters for a Demand Registration that is to be
an underwritten offering advises the Company and the Demanding Holders in writing that the dollar amount or number of shares of
Registrable Securities which the Demanding Holders desire to sell, taken together with all other shares of Common Stock or other
securities which the Company desires to sell and the shares of Common Stock, if any, as to which registration has been requested
pursuant to written contractual piggy-back registration rights held by other shareholders of the Company who desire to sell, exceeds
the maximum dollar amount or maximum number of shares that can be sold in such offering without adversely affecting the proposed
offering price, the timing, the distribution method, or the probability of success of such offering (such maximum dollar amount
or maximum number of shares, as applicable, the “Maximum Number of Shares”), then the Company shall include
in such registration: (i) first, the Registrable Securities as to which Demand Registration has been requested by the Demanding
Holders (pro rata in accordance with the number of shares that each such Person has requested be included in such registration,
regardless of the number of shares held by each such Person (such proportion is referred to herein as “Pro Rata”))
that can be sold without exceeding the Maximum Number of Shares; (ii) second, to the extent that the Maximum Number of Shares has
not been reached under the foregoing clause (i), the shares of Common Stock or other securities that the Company desires to sell
that can be sold without exceeding the Maximum Number of Shares; and (iii) third, to the extent that the Maximum Number of Shares
has not been reached under the foregoing clauses (i) and (ii), the shares of Common Stock or other securities for the account of
other persons that the Company is obligated to register pursuant to written contractual arrangements with such persons and that
can be sold without exceeding the Maximum Number of Shares.


 


2.1.5       
Withdrawal. If a majority-in-interest of the Demanding Holders disapprove of the terms of any underwriting
or are not entitled to include all of their Registrable Securities in any offering, such majority-in-interest of the Demanding
Holders may elect to withdraw from such offering by giving written notice to the Company and the Underwriter or Underwriters of
their request to withdraw prior to the effectiveness of the Registration Statement filed with the Commission with respect to such
Demand Registration. If the majority-in-interest of the Demanding Holders withdraws from a proposed offering relating to a Demand
Registration, then such registration shall not count as a Demand Registration provided for in Section 2.1.


 






     


     


    

 


2.2             
Piggy-Back Registration.


 


2.2.1        Piggy-Back
Rights. If at any time on or after the date the Company consummates a Business Combination the Company proposes to file a
Registration Statement under the Securities Act with respect to an offering of equity securities, or securities or other
obligations exercisable or exchangeable for, or convertible into, equity securities, by the Company for its own account or
for shareholders of the Company for their account (or by the Company and by shareholders of the Company including, without
limitation, pursuant to Section 2.1), other than a Registration Statement (i) filed in connection with any employee stock
option or other benefit plan, (ii) for an exchange offer or offering of securities solely to the Company’s existing
shareholders, (iii) for an offering of debt that is convertible into equity securities of the Company or (iv) for a dividend
reinvestment plan, then the Company shall (x) give written notice of such proposed filing to the holders of Registrable
Securities as soon as practicable but in no event less than ten (10) days before the anticipated filing date, which notice
shall describe the amount and type of securities to be included in such offering, the intended method(s) of distribution, and
the name of the proposed managing Underwriter or Underwriters, if any, of the offering, and (y) offer to the holders of
Registrable Securities in such notice the opportunity to register the sale of such number of shares of Registrable Securities
as such holders may request in writing within five (5) days following receipt of such notice (a “Piggy-Back
Registration”). The Company shall cause such Registrable Securities to be included in such registration and
shall use its best efforts to cause the managing Underwriter or Underwriters of a proposed underwritten offering to permit
the Registrable Securities requested to be included in a Piggy-Back Registration on the same terms and conditions as any
similar securities of the Company and to permit the sale or other disposition of such Registrable Securities in accordance
with the intended method(s) of distribution thereof. All holders of Registrable Securities proposing to distribute their
securities through a Piggy-Back Registration that involves an Underwriter or Underwriters shall enter into an underwriting
agreement in customary form with the Underwriter or Underwriters selected for such Piggy-Back Registration. Notwithstanding
the provisions set forth in the immediately preceding sentences, the right to a Piggy-Back Registration set forth under this
Section 2.2.1 with respect to the Registrable Securities shall terminate on the seventh anniversary of the Effective
Date.


 


2.2.2       
Reduction of Offering. If the managing Underwriter or Underwriters for a Piggy-Back Registration that is to
be an underwritten offering advises the Company and the holders of Registrable Securities in writing that the dollar amount or
number of shares of Common Stock which the Company desires to sell, taken together with the shares of Common Stock, if any, as
to which registration has been demanded pursuant to written contractual arrangements with persons other than the holders of Registrable
Securities hereunder, the Registrable Securities as to which registration has been requested under this Section 2.2, and the shares
of Common Stock, if any, as to which registration has been requested pursuant to the written contractual piggy-back registration
rights of other shareholders of the Company, exceeds the Maximum Number of Shares, then the Company shall include in any such registration:


 


(a)               If
the registration is undertaken for the Company’s account: (A) first, the shares of Common Stock or other securities
that the Company desires to sell that can be sold without exceeding the Maximum Number of Shares; (B) second, to the extent
that the Maximum Number of Shares has not been reached under the foregoing clause (A), the shares of Common Stock or other
securities, if any, comprised of Registrable Securities, as to which registration has been requested pursuant to the
applicable written contractual piggy-back registration rights of such security holders, Pro Rata, that can be sold without
exceeding the Maximum Number of Shares; and (C) third, to the extent that the Maximum Number of shares has not been reached
under the foregoing clauses (A) and (B), the shares of Common Stock or other securities for the account of other persons that
the Company is obligated to register pursuant to written contractual piggy-back registration rights with such persons and
that can be sold without exceeding the Maximum Number of Shares;


 






     


     


    

 


(b)              
If the registration is a “demand” registration undertaken at the demand of persons other than either
the holders of Registrable Securities, (A) first, the shares of Common Stock or other securities for the account of the demanding
persons that can be sold without exceeding the Maximum Number of Shares; (B) second, to the extent that the Maximum Number of Shares
has not been reached under the foregoing clause (A), the shares of Common Stock or other securities that the Company desires to
sell that can be sold without exceeding the Maximum Number of Shares; (C) third, to the extent that the Maximum Number of Shares
has not been reached under the foregoing clauses (A) and (B), collectively the shares of Common Stock or other securities comprised
of Registrable Securities, Pro Rata, as to which registration has been requested pursuant to the terms hereof, that can be sold
without exceeding the Maximum Number of Shares; and (D) fourth, to the extent that the Maximum Number of Shares has not been reached
under the foregoing clauses (A), (B) and (C), the shares of Common Stock or other securities for the account of other persons that
the Company is obligated to register pursuant to written contractual arrangements with such persons, that can be sold without exceeding
the Maximum Number of Shares.


 


2.2.3       
Withdrawal. Any holder of Registrable Securities may elect to withdraw such holder’s request for inclusion
of Registrable Securities in any Piggy-Back Registration by giving written notice to the Company of such request to withdraw prior
to the effectiveness of the Registration Statement. The Company (whether on its own determination or as the result of a withdrawal
by persons making a demand pursuant to written contractual obligations) may withdraw a Registration Statement at any time prior
to the effectiveness of such Registration Statement. Notwithstanding any such withdrawal, the Company shall pay all expenses incurred
by the holders of Registrable Securities in connection with such Piggy-Back Registration as provided in Section 3.3.


 


2.2.4        Registrations
on Form S-3. The holders of Registrable Securities may at any time and from time to time, request in writing that the
Company register the resale of any or all of such Registrable Securities on Form S-3 or any similar short-form registration
which may be available at such time (“Form S-3”); provided, however, that the Company shall not be
obligated to effect such request through an underwritten offering. Upon receipt of such written request, the Company will
promptly give written notice of the proposed registration to all other holders of Registrable Securities, and, as soon as
practicable thereafter, effect the registration of all or such portion of such holder’s or holders’ Registrable
Securities as are specified in such request, together with all or such portion of the Registrable Securities or other
securities of the Company, if any, of any other holder or holders joining in such request as are specified in a written
request given within fifteen (15) days after receipt of such written notice from the Company; provided, however, that the
Company shall not be obligated to effect any such registration pursuant to this Section 2.3: (i) if Form S-3 is not available
for such offering; or (ii) if the holders of the Registrable Securities, together with the holders of any other securities of
the Company entitled to inclusion in such registration, propose to sell Registrable Securities and such other securities (if
any) at any aggregate price to the public of less than $500,000. Registrations effected pursuant to this Section 2.3 shall
not be counted as Demand Registrations effected pursuant to Section 2.1.


 






     


     


    

 



  


3.                 
REGISTRATION PROCEDURES.


 


3.1             
Filings; Information. Whenever the Company is required to effect the registration of any Registrable Securities
pursuant to Section 2, the Company shall use its best efforts to effect the registration and sale of such Registrable Securities
in accordance with the intended method(s) of distribution thereof as expeditiously as practicable, and in connection with any such
request:


 


3.1.1       
Filing Registration Statement. The Company shall use its best efforts to, as expeditiously as possible after
receipt of a request for a Demand Registration pursuant to Section 2.1, prepare and file with the Commission a Registration Statement
on any form for which the Company then qualifies or which counsel for the Company shall deem appropriate and which form shall be
available for the sale of all Registrable Securities to be registered thereunder in accordance with the intended method(s) of distribution
thereof, and shall use its best efforts to cause such Registration Statement to become effective and use its best efforts to keep
it effective for the period required by Section 3.1.3; provided, however, that the Company shall have the right to defer any Demand
Registration for up to thirty (30) days, and any Piggy-Back Registration for such period as may be applicable to deferment of any
demand registration to which such Piggy-Back Registration relates, in each case if the Company shall furnish to the holders a certificate
signed by the President or Chairman of the Company stating that, in the good faith judgment of the Board of Directors of the Company,
it would be materially detrimental to the Company and its shareholders for such Registration Statement to be effected at such time;
provided further, however, that the Company shall not have the right to exercise the right set forth in the immediately preceding
proviso more than once in any 365-day period in respect of a Demand Registration hereunder.


 


3.1.2       
Copies. The Company shall, prior to filing a Registration Statement or prospectus, or any amendment or supplement
thereto, furnish without charge to the holders of Registrable Securities included in such registration, and such holders’
legal counsel, copies of such Registration Statement as proposed to be filed, each amendment and supplement to such Registration
Statement (in each case including all exhibits thereto and documents incorporated by reference therein), the prospectus included
in such Registration Statement (including each preliminary prospectus), and such other documents as the holders of Registrable
Securities included in such registration or legal counsel for any such holders may request in order to facilitate the disposition
of the Registrable Securities owned by such holders.


 


3.1.3        Amendments
and Supplements. The Company shall prepare and file with the Commission such amendments, including post-effective
amendments, and supplements to such Registration Statement and the prospectus used in connection therewith as may be
necessary to keep such Registration Statement effective and in compliance with the provisions of the Securities Act until all
Registrable Securities and other securities covered by such Registration Statement have been disposed of in accordance with
the intended method(s) of distribution set forth in such Registration Statement or such securities have been withdrawn.


 






     


     


    

 


3.1.4       
Notification. After the filing of a Registration Statement, the Company shall promptly, and in no event more
than two (2) business days after such filing, notify the holders of Registrable Securities included in such Registration Statement
of such filing, and shall further notify such holders promptly and confirm such advice in writing in all events within two (2)
business days of the occurrence of any of the following: (i) when such Registration Statement becomes effective; (ii) when any
post-effective amendment to such Registration Statement becomes effective; (iii) the issuance or threatened issuance by the Commission
of any stop order (and the Company shall take all actions required to prevent the entry of such stop order or to remove it if entered);
and (iv) any request by the Commission for any amendment or supplement to such Registration Statement or any prospectus relating
thereto or for additional information or of the occurrence of an event requiring the preparation of a supplement or amendment to
such prospectus so that, as thereafter delivered to the purchasers of the securities covered by such Registration Statement, such
prospectus will not contain an untrue statement of a material fact or omit to state any material fact required to be stated therein
or necessary to make the statements therein not misleading, and promptly make available to the holders of Registrable Securities
included in such Registration Statement any such supplement or amendment; except that before filing with the Commission a Registration
Statement or prospectus or any amendment or supplement thereto, including documents incorporated by reference, the Company shall
furnish to the holders of Registrable Securities included in such Registration Statement and to the legal counsel for any such
holders, copies of all such documents proposed to be filed sufficiently in advance of filing to provide such holders and legal
counsel with a reasonable opportunity to review such documents and comment thereon, and the Company shall not file any Registration
Statement or prospectus or amendment or supplement thereto, including documents incorporated by reference, to which such holders
or their legal counsel shall object.


 


3.1.5       
State Securities Laws Compliance. The Company shall use its best efforts to (i) register or qualify the Registrable
Securities covered by the Registration Statement under such securities or “blue sky” laws of such jurisdictions in
the United States as the holders of Registrable Securities included in such Registration Statement (in light of their intended
plan of distribution) may request and (ii) take such action necessary to cause such Registrable Securities covered by the Registration
Statement to be registered with or approved by such other governmental authorities as may be necessary by virtue of the business
and operations of the Company and do any and all other acts and things that may be necessary or advisable to enable the holders
of Registrable Securities included in such Registration Statement to consummate the disposition of such Registrable Securities
in such jurisdictions; provided, however, that the Company shall not be required to qualify generally to do business in any jurisdiction
where it would not otherwise be required to qualify but for this paragraph or subject itself to taxation in any such jurisdiction.


 






     


     


    

 


3.1.6        Agreements
for Disposition. The Company shall enter into customary agreements (including, if applicable, an underwriting agreement
in customary form) and take such other actions as are reasonably required in order to expedite or facilitate the disposition
of such Registrable Securities. The representations, warranties and covenants of the Company in any underwriting agreement
which are made to or for the benefit of any Underwriters, to the extent applicable, shall also be made to and for the benefit
of the holders of Registrable Securities included in such registration statement. No holder of Registrable Securities
included in such registration statement shall be required to make any representations or warranties in the underwriting
agreement except, if applicable, with respect to such holder’s organization, good standing, authority, title to
Registrable Securities, lack of conflict of such sale with such holder’s material agreements and organizational
documents, and with respect to written information relating to such holder that such holder has furnished in writing
expressly for inclusion in such Registration Statement.


 


3.1.7       
Cooperation. The principal executive officer of the Company, the principal financial officer of the Company,
the principal accounting officer of the Company and all other officers and members of the management of the Company shall cooperate
fully in any offering of Registrable Securities hereunder, which cooperation shall include, without limitation, the preparation
of the Registration Statement with respect to such offering and all other offering materials and related documents, and participation
in meetings with Underwriters, attorneys, accountants and potential investors.


 


3.1.8       
Records. The Company shall make available for inspection by the holders of Registrable Securities included
in such Registration Statement, any Underwriter participating in any disposition pursuant to such registration statement and any
attorney, accountant or other professional retained by any holder of Registrable Securities included in such Registration Statement
or any Underwriter, all financial and other records, pertinent corporate documents and properties of the Company, as shall be necessary
to enable them to exercise their due diligence responsibility, and cause the Company’s officers, directors and employees
to supply all information requested by any of them in connection with such Registration Statement.


 


3.1.9       
Opinions and Comfort Letters. Upon request, the Company shall furnish to each holder of Registrable Securities
included in any Registration Statement a signed counterpart, addressed to such holder, of (i) any opinion of counsel to the Company
delivered to any Underwriter and (ii) any comfort letter from the Company’s independent public accountants delivered to any
Underwriter. In the event no legal opinion is delivered to any Underwriter, the Company shall furnish to each holder of Registrable
Securities included in such Registration Statement, at any time that such holder elects to use a prospectus, an opinion of counsel
to the Company to the effect that the Registration Statement containing such prospectus has been declared effective and that no
stop order is in effect.


 


3.1.10   
Earnings Statement. The Company shall comply with all applicable rules and regulations of the Commission and
the Securities Act, and make available to its shareholders, as soon as practicable, an earnings statement covering a period of
twelve (12) months, which earnings statement shall satisfy the provisions of Section 11(a) of the Securities Act and Rule 158 thereunder.


 


3.1.11    Listing.
The Company shall use its best efforts to cause all Registrable Securities included in any registration to be listed on such
exchanges or otherwise designated for trading in the same manner as similar securities issued by the Company are then listed
or designated or, if no such similar securities are then listed or designated, in a manner satisfactory to the holders of a
majority of the Registrable Securities included in such registration.


 






     


     


    

 


3.1.12   
Road Show. If the registration involves the registration of Registrable Securities involving gross proceeds
in excess of $5,000,000, the Company shall use its reasonable efforts to make available senior executives of the Company to participate
in customary “road show” presentations that may be reasonably requested by the Underwriter in any underwritten offering.


 


3.2             
Obligation to Suspend Distribution. Upon receipt of any notice from the Company of the happening of any event
of the kind described in Section 3.1.4(iv), or, in the case of a resale registration on Form S-3 pursuant to Section 2.3 hereof,
upon any suspension by the Company, pursuant to a written insider trading compliance program adopted by the Company’s Board
of Directors, of the ability of all “insiders” covered by such program to transact in the Company’s securities
because of the existence of material non-public information, each holder of Registrable Securities included in any registration
shall immediately discontinue disposition of such Registrable Securities pursuant to the Registration Statement covering such Registrable
Securities until such holder receives the supplemented or amended prospectus contemplated by Section 3.1.4(iv) or the restriction
on the ability of “insiders” to transact in the Company’s securities is removed, as applicable, and, if so directed
by the Company, each such holder will deliver to the Company all copies, other than permanent file copies then in such holder’s
possession, of the most recent prospectus covering such Registrable Securities at the time of receipt of such notice.


 


3.3             
Registration Expenses. The Company shall bear all costs and expenses incurred in connection with any Demand
Registration pursuant to Section 2.1, any Piggy-Back Registration pursuant to Section 2.2, and any registration on Form S-3 effected
pursuant to Section 2.3, and all expenses incurred in performing or complying with its other obligations under this Agreement,
whether or not the Registration Statement becomes effective, including, without limitation: (i) all registration and filing fees;
(ii) fees and expenses of compliance with securities or “blue sky” laws (including fees and disbursements of counsel
in connection with blue sky qualifications of the Registrable Securities); (iii) printing expenses; (iv) the Company’s internal
expenses (including, without limitation, all salaries and expenses of its officers and employees); (v) the fees and expenses incurred
in connection with the listing of the Registrable Securities as required by Section 3.1.11; (vi) Financial Industry Regulatory
Authority fees; (vii) fees and disbursements of counsel for the Company and fees and expenses for independent certified public
accountants retained by the Company (including the expenses or costs associated with the delivery of any opinions or comfort letters
requested pursuant to Section 3.1.9); (viii) the reasonable fees and expenses of any special experts retained by the Company in
connection with such registration and (ix) the reasonable fees and expenses of one legal counsel selected by the holders of a majority-in-interest
of the Registrable Securities included in such registration. The Company shall have no obligation to pay any underwriting discounts
or selling commissions attributable to the Registrable Securities being sold by the holders thereof, which underwriting discounts
or selling commissions shall be borne by such holders. Additionally, in an underwritten offering, all selling shareholders and
the Company shall bear the expenses of the Underwriter pro rata in proportion to the respective amount of shares each is selling
in such offering.


 






     


     


    

 


3.4             
 Information. The holders of Registrable Securities shall provide such information as may reasonably be requested
by the Company, or the managing Underwriter, if any, in connection with the preparation of any Registration Statement, including
amendments and supplements thereto, in order to effect the registration of any Registrable Securities under the Securities Act
pursuant to Section 2 and in connection with the Company’s obligation to comply with Federal and applicable state securities
laws.


 


4.                 
INDEMNIFICATION AND CONTRIBUTION.


 


4.1             
Indemnification by the Company. The Company agrees to indemnify and hold harmless each Investor and each other
holder of Registrable Securities, and each of their respective officers, employees, affiliates, directors, partners, members, attorneys
and agents, and each person, if any, who controls an Investor and each other holder of Registrable Securities (within the meaning
of Section 15 of the Securities Act or Section 20 of the Exchange Act) (each, an “Investor Indemnified Party”),
from and against any expenses, losses, judgments, claims, damages or liabilities, whether joint or several, arising out of or based
upon any untrue statement (or allegedly untrue statement) of a material fact contained in any Registration Statement under which
the sale of such Registrable Securities was registered under the Securities Act, any preliminary prospectus, final prospectus or
summary prospectus contained in the Registration Statement, or any amendment or supplement to such Registration Statement, or arising
out of or based upon any omission (or alleged omission) to state a material fact required to be stated therein or necessary to
make the statements therein not misleading, or any violation by the Company of the Securities Act or any rule or regulation promulgated
thereunder applicable to the Company and relating to action or inaction required of the Company in connection with any such registration;
and the Company shall promptly reimburse the Investor Indemnified Party for any legal and any other expenses reasonably incurred
by such Investor Indemnified Party in connection with investigating and defending any such expense, loss, judgment, claim, damage,
liability or action; provided, however, that the Company will not be liable in any such case to the extent that any such expense,
loss, claim, damage or liability arises out of or is based upon any untrue statement or allegedly untrue statement or omission
or alleged omission made in such Registration Statement, preliminary prospectus, final prospectus, or summary prospectus, or any
such amendment or supplement, in reliance upon and in conformity with information furnished to the Company, in writing, by such
selling holder expressly for use therein. The Company also shall indemnify any Underwriter of the Registrable Securities, their
officers, affiliates, directors, partners, members and agents and each person who controls such Underwriter on substantially the
same basis as that of the indemnification provided above in this Section 4.1.


 






     


     


    

 


4.2              Indemnification
by Holders of Registrable Securities. Each selling holder of Registrable Securities will, in the event that any
registration is being effected under the Securities Act pursuant to this Agreement of any Registrable Securities held by such
selling holder, indemnify and hold harmless the Company, each of its directors and officers and each Underwriter (if any),
and each other selling holder and each other person, if any, who controls another selling holder or such Underwriter within
the meaning of the Securities Act, against any losses, claims, judgments, damages or liabilities, whether joint or several,
insofar as such losses, claims, judgments, damages or liabilities (or actions in respect thereof) arise out of or are based
upon any untrue statement or allegedly untrue statement of a material fact contained in any Registration Statement under
which the sale of such Registrable Securities was registered under the Securities Act, any preliminary prospectus, final
prospectus or summary prospectus contained in the Registration Statement, or any amendment or supplement to the Registration
Statement, or arise out of or are based upon any omission or the alleged omission to state a material fact required to be
stated therein or necessary to make the statement therein not misleading, if the statement or omission was made in reliance
upon and in conformity with information furnished in writing to the Company by such selling holder expressly for use therein,
and shall reimburse the Company, its directors and officers, and each other selling holder or controlling person for any
legal or other expenses reasonably incurred by any of them in connection with investigation or defending any such loss,
claim, damage, liability or action. Each selling holder’s indemnification obligations hereunder shall be several and
not joint and shall be limited to the amount of any net proceeds actually received by such selling holder.


 


4.3             
Conduct of Indemnification Proceedings. Promptly after receipt by any person of any notice of any loss, claim,
damage or liability or any action in respect of which indemnity may be sought pursuant to Section 4.1 or 4.2, such person (the
 “Indemnified Party”) shall, if a claim in respect thereof is to be made against any other person for indemnification
hereunder, notify such other person (the “Indemnifying Party”) in writing of the loss, claim, judgment,
damage, liability or action; provided, however, that the failure by the Indemnified Party to notify the Indemnifying Party shall
not relieve the Indemnifying Party from any liability which the Indemnifying Party may have to such Indemnified Party hereunder,
except and solely to the extent the Indemnifying Party is actually prejudiced by such failure. If the Indemnified Party is seeking
indemnification with respect to any claim or action brought against the Indemnified Party, then the Indemnifying Party shall be
entitled to participate in such claim or action, and, to the extent that it wishes, jointly with all other Indemnifying Parties,
to assume control of the defense thereof with counsel satisfactory to the Indemnified Party. After notice from the Indemnifying
Party to the Indemnified Party of its election to assume control of the defense of such claim or action, the Indemnifying Party
shall not be liable to the Indemnified Party for any legal or other expenses subsequently incurred by the Indemnified Party in
connection with the defense thereof other than reasonable costs of investigation; provided, however, that in any action in which
both the Indemnified Party and the Indemnifying Party are named as defendants, the Indemnified Party shall have the right to employ
separate counsel (but no more than one such separate counsel) to represent the Indemnified Party and its controlling persons who
may be subject to liability arising out of any claim in respect of which indemnity may be sought by the Indemnified Party against
the Indemnifying Party, with the fees and expenses of such counsel to be paid by such Indemnifying Party if, based upon the written
opinion of counsel of such Indemnified Party, representation of both parties by the same counsel would be inappropriate due to
actual or potential differing interests between them. No Indemnifying Party shall, without the prior written consent of the Indemnified
Party, consent to entry of judgment or effect any settlement of any claim or pending or threatened proceeding in respect of which
the Indemnified Party is or could have been a party and indemnity could have been sought hereunder by such Indemnified Party, unless
such judgment or settlement includes an unconditional release of such Indemnified Party from all liability arising out of such
claim or proceeding.


 






     


     


    

 


4.4             
Contribution.


 


4.4.1        If
the indemnification provided for in the foregoing Sections 4.1, 4.2 and 4.3 is unavailable to any Indemnified Party in
respect of any loss, claim, damage, liability or action referred to herein, then each such Indemnifying Party, in lieu of
indemnifying such Indemnified Party, shall contribute to the amount paid or payable by such Indemnified Party as a result of
such loss, claim, damage, liability or action in such proportion as is appropriate to reflect the relative fault of the
Indemnified Parties and the Indemnifying Parties in connection with the actions or omissions which resulted in such loss,
claim, damage, liability or action, as well as any other relevant equitable considerations. The relative fault of any
Indemnified Party and any Indemnifying Party shall be determined by reference to, among other things, whether the untrue or
alleged untrue statement of a material fact or the omission or alleged omission to state a material fact relates to
information supplied by such Indemnified Party or such Indemnifying Party and the parties’ relative intent, knowledge,
access to information and opportunity to correct or prevent such statement or omission.


 


4.4.2       
The parties hereto agree that it would not be just and equitable if contribution pursuant to this Section 4.4 were
determined by pro rata allocation or by any other method of allocation which does not take account of the equitable considerations
referred to in the immediately preceding Section 4.4.1.


 


4.4.3       
The amount paid or payable by an Indemnified Party as a result of any loss, claim, damage, liability or action referred
to in the immediately preceding paragraph shall be deemed to include, subject to the limitations set forth above, any legal or
other expenses incurred by such Indemnified Party in connection with investigating or defending any such action or claim. Notwithstanding
the provisions of this Section 4.4, no holder of Registrable Securities shall be required to contribute any amount in excess of
the dollar amount of the net proceeds (after payment of any underwriting fees, discounts, commissions or taxes) actually received
by such holder from the sale of Registrable Securities which gave rise to such contribution obligation. No person guilty of fraudulent
misrepresentation (within the meaning of Section 11(f) of the Securities Act) shall be entitled to contribution from any person
who was not guilty of such fraudulent misrepresentation.


 


5.                 
RULE 144.


 


5.1             
Rule 144. The Company covenants that it shall file any reports required to be filed by it under the Securities
Act and the Exchange Act and shall take such further action as the holders of Registrable Securities may reasonably request, all
to the extent required from time to time to enable such holders to sell Registrable Securities without registration under the Securities
Act within the limitation of the exemptions provided by Rule 144 under the Securities Act, as such Rules may be amended from time
to time, or any similar rule or regulation hereafter adopted by the Commission.


 


6.                 
MISCELLANEOUS.


 


6.1             
Other Registration Rights. The Company represents and warrants that, except as disclosed in the Company’s
registration statement on Form S-1 (File No. 333-______), no person, other than the holders of the Registrable Securities, has
any right to require the Company to register any shares of the Company’s capital stock for sale or to include shares of the
Company’s capital stock in any registration filed by the Company for the sale of shares of capital stock for its own account
or for the account of any other person.


  



     


     


    





 


6.2             
 Assignment; No Third Party Beneficiaries. This Agreement and the rights, duties and obligations of the Company
hereunder may not be assigned or delegated by the Company in whole or in part. This Agreement and the rights, duties and obligations
of the holders of Registrable Securities hereunder may be freely assigned or delegated by such holder of Registrable Securities
in conjunction with and to the extent of any transfer of Registrable Securities by any such holder. This Agreement and the provisions
hereof shall be binding upon and shall inure to the benefit of each of the parties, to the permitted assigns of the Investors or
holder of Registrable Securities or of any assignee of the Investors or holder of Registrable Securities. This Agreement is not
intended to confer any rights or benefits on any persons that are not party hereto other than as expressly set forth in Article
4 and this Section 6.2.


 


6.3             
Notices. All notices, demands, requests, consents, approvals or other communications (collectively, “Notices”)
required or permitted to be given hereunder or which are given with respect to this Agreement shall be in writing and shall be
personally served, delivered by reputable air courier service with charges prepaid, or transmitted by hand delivery, telegram,
telex or facsimile, addressed as set forth below, or to such other address as such party shall have specified most recently by
written notice. Notice shall be deemed given on the date of service or transmission if personally served or transmitted by telegram,
telex or facsimile; provided, that if such service or transmission is not on a business day or is after normal business hours,
then such notice shall be deemed given on the next business day. Notice otherwise sent as provided herein shall be deemed given
on the next business day following timely delivery of such notice to a reputable air courier service with an order for next-day
delivery.


 


To the Company:


 


LifeSci Acquisition II Corp.

250 W 55th St., #3401


New York, NY 10019


 


with a copy to:


 


Loeb & Loeb LLP

345 Park Avenue

New York, NY 10154

Attn: Giovanni Caruso, Esq.


 


To an Investor, to the address set forth below such
Investor’s name on Exhibit A hereto.


 


6.4             
Severability. This Agreement shall be deemed severable, and the invalidity or unenforceability of any term
or provision hereof shall not affect the validity or enforceability of this Agreement or of any other term or provision hereof.
Furthermore, in lieu of any such invalid or unenforceable term or provision, the parties hereto intend that there shall be added
as a part of this Agreement a provision as similar in terms to such invalid or unenforceable provision as may be possible that
is valid and enforceable.


 






     


     


    

 


6.5             
 Counterparts. This Agreement may be executed in multiple counterparts, each of which shall be deemed an original,
and all of which taken together shall constitute one and the same instrument.


 


6.6             
Entire Agreement. This Agreement (including all agreements entered into pursuant hereto and all certificates
and instruments delivered pursuant hereto and thereto) constitute the entire agreement of the parties with respect to the subject
matter hereof and supersede all prior and contemporaneous agreements, representations, understandings, negotiations and discussions
between the parties, whether oral or written.


 


6.7             
Term. This Agreement shall terminate on the seven-year anniversary of the date hereof.


 


6.8            
Modifications and Amendments. No amendment, modification or termination of this Agreement shall be binding
upon any party unless executed in writing by such party.


 


6.9             
Titles and Headings. Titles and headings of sections of this Agreement are for convenience only and shall
not affect the construction of any provision of this Agreement. No amendment, modification or termination of this Agreement shall
be binding upon the holders of the Registrable Securities unless executed in writing by the holders of the majority Registrable
Securities.


 


6.10         
Waivers and Extensions. Any party to this Agreement may waive any right, breach or default which such party
has the right to waive, provided that such waiver will not be effective against the waiving party unless it is in writing, is signed
by such party, and specifically refers to this Agreement. Waivers may be made in advance or after the right waived has arisen or
the breach or default waived has occurred. Any waiver may be conditional. No waiver of any breach of any agreement or provision
herein contained shall be deemed a waiver of any preceding or succeeding breach thereof nor of any other agreement or provision
herein contained. No waiver or extension of time for performance of any obligations or acts shall be deemed a waiver or extension
of the time for performance of any other obligations or acts.


 


6.11         
Remedies Cumulative. In the event that the Company fails to observe or perform any covenant or agreement to
be observed or performed under this Agreement, the Investor or any other holder of Registrable Securities may proceed to protect
and enforce its rights by suit in equity or action at law, whether for specific performance of any term contained in this Agreement
or for an injunction against the breach of any such term or in aid of the exercise of any power granted in this Agreement or to
enforce any other legal or equitable right, or to take any one or more of such actions, without being required to post a bond.
None of the rights, powers or remedies conferred under this Agreement shall be mutually exclusive, and each such right, power or
remedy shall be cumulative and in addition to any other right, power or remedy, whether conferred by this Agreement or now or hereafter
available at law, in equity, by statute or otherwise.


 


6.12          Governing
Law. This Agreement shall be governed by, interpreted under, and construed in accordance with the internal laws of the
State of New York applicable to agreements made and to be performed within the State of New York, without giving effect to
any choice-of-law provisions thereof that would compel the application of the substantive laws of any other jurisdiction.


 






     


     


    

 


6.13         
Waiver of Trial by Jury. Each party hereby irrevocably and unconditionally waives the right to a trial by
jury in any action, suit, counterclaim or other proceeding (whether based on contract, tort or otherwise) arising out of, connected
with or relating to this Agreement, the transactions contemplated hereby, or the actions of the Investor in the negotiation, administration,
performance or enforcement hereof.


 


[REMAINDER OF PAGE INTENTIONALLY LEFT BLANK]


 






     


     


    

 


IN WITNESS WHEREOF,
the parties have caused this Registration Rights Agreement to be executed and delivered by their duly authorized representatives
as of the date first written above.


 


	 	COMPANY:
	 	 
	 	LIFESCI
    ACQUISITION II CORP.
	 	 
	 	By:  	 
	 	 	Name:
    Andrew McDonald
	 	 	Title:
    Chief Executive officer
	 	 
	 	INVESTORS:
	 	 
	 	LIFESCI
    HOLDINGS LLC
	 	 
	 	By:  	 
	 	Name:  	 
	 	Title:	 
	 	 
	 	CHARDAN
    HEALTHCARE INVESTMENTS LLC
	 	 
	 	By:  	 
	 	Name:	 
	 	Title:	 




 


[Signature Page to Registration Rights Agreement]


 






     


     


    

 


EXHIBIT A


 


	Name
    of Investor	Address
	 
	LifeSci
    Holdings LLC
	 
	Chardan
    Healthcare Investments LLC