Document:

EX-10.1(a)

 Exhibit 10.1(a) 

4D MOLECULAR THERAPEUTICS, INC. 

2015 EQUITY INCENTIVE PLAN 

Adopted by Board and Stockholders on March 20, 2015, as amended on March 10, 2016 and August 27, 2018 

Termination Date: March 20, 2025 

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

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

  

	 	•	 	 to provide incentives that align the interests of Employees, Directors and Consultants with those of the
Company’s stockholders; and 

  

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

The Plan permits the grant of Incentive Stock Options, Nonstatutory Stock Options, Stock Appreciation Rights, Restricted Stock and Restricted
Stock Units. 
 2. Definitions. As used herein, the following definitions will apply: 

(a) “Administrator” means the Committee; provided, however, that “Administrator”
means the Board if (i) no Committee is appointed by the Board or (ii) the Board terminates the Committee’s responsibilities hereunder and revests in the Board the administration of the Plan; provided, further, that
“Administrator” may be comprised of different Committees with respect to different groups of Service Providers. 

(b) “Affiliate” means a parent corporation (or other entity) of the Company, a
majority-owned subsidiary of the Company or a majority-owned subsidiary of the Company’s parent corporation (or other entity). 

(c) “Applicable Laws” means the requirements related to or implicated by the administration of the Plan under U.S.
state corporate laws, U.S. federal and state securities laws, the Code, state and local tax laws, any stock exchange or quotation system on which the Common Stock is listed or quoted and the applicable laws of any foreign country or jurisdiction
where Awards are granted. 
 (d) “Award” means any right granted under the Plan, including an Incentive Stock Option,
a Nonstatutory Stock Option, a Stock Appreciation Right, Restricted Stock or a Restricted Stock Unit. 
 (e) “Award
Agreement” means a written or electronic agreement, contract, certificate or other instrument or document setting forth the terms and conditions applicable to an Award. Each Award Agreement will be subject to the terms and conditions of
the Plan. 
 (f) “Board” means the board of directors of the Company. 

 

 (g) “Certificate of Incorporation” means the Company’s
Certificate of Incorporation, as may be amended from time to time. 
 (h) “Change in Control” means the occurrence of
either of the following events: 
 (i) a merger or consolidation in which the Company is a constituent party (or a subsidiary of the Company
is a constituent party and the Company issues shares of its capital stock pursuant to such merger or consolidation), except any such merger or consolidation (A) effected exclusively for the purpose of changing the Company’s domicile or
(B) involving the Company (or a subsidiary of the Company) in which the shares of capital stock of the Company outstanding immediately prior to such merger or consolidation continue to represent, or are converted into or exchanged for shares of
capital stock that represent, immediately following such merger or consolidation, at least a majority, by voting power, of the capital stock of (x) the surviving or resulting corporation or (y) if the surviving or resulting corporation is
a wholly owned subsidiary of another corporation immediately following such merger or consolidation, the parent corporation of such surviving or resulting corporation; or 

(ii) the sale, lease, transfer, exclusive license or other disposition, in a single transaction or series of related transactions, by the
Company (or any subsidiary of the Company) of all or substantially all of the assets of the Company and its subsidiaries taken as a whole or the sale or disposition (whether by merger or otherwise) of one or more subsidiaries of the Company if
substantially all of the assets of the Company and its subsidiaries taken as a whole are held by such subsidiary or subsidiaries, except where such sale, lease, transfer, exclusive license or other disposition is to a wholly owned subsidiary of the
Company; 
 provided, however, that any transaction or series of transactions principally for bona fide equity financing
purposes in which cash is received by the Company or indebtedness of the Company is cancelled or converted (or a combination thereof) will not be deemed to be a Change in Control. 

(i) “Code” means the Internal Revenue Code of 1986, as it may be amended from time to time. Any reference to a section
of the Code will be deemed to include a reference to any regulations and Internal Revenue Service guidance promulgated thereunder. 
 (j)
“Committee” means the compensation committee of the Board or other committee of one or more Directors appointed by the Board to administer the Plan in accordance with Section 4. 

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

(l) “Company” means 4D Molecular Therapeutics, Inc., a Delaware corporation, and any successor thereto. 

  
 -2- 

 (m) “Consultant” means any Person (i) engaged by the Company or
any Affiliate to render consulting or advisory services to such entity and who is compensated for such services or (ii) serving as a member of the board of directors of any Affiliate and who is compensated for such services; provided,
however, that the term “Consultant” will not include Directors who are not compensated by the Company for their services as Directors, and the payment of a director’s fee by the Company for services as a Director
will not cause a Director to be considered a “Consultant” for purposes of the Plan. 
 (n) “Director” means
a member of the Board. 
 (o) “Disability” has the meaning ascribed to that term under Section 22(e)(3) of the
Code; provided, however, that, in the case of Awards other than Incentive Stock Options or Awards subject to Section 409A of the Code, the Administrator, in its sole discretion, may determine whether a Disability exists in
accordance with uniform and non-discriminatory standards adopted by the Administrator from time to time. 

(p) “Employee” means any individual, including an officer or director, employed by the Company or any Affiliate;
provided, however, that, for purposes of determining eligibility to receive Incentive Stock Options, “Employee” means an employee of the Company or a parent or subsidiary corporation within the meaning of
Section 424 of the Code. Neither service as a Director nor payment of a director’s fee by the Company for such service or for service as a member of the board of directors of any Affiliate will be sufficient to constitute
“employment” by the Company or any Affiliate. 
 (q) “Exchange Act”
means the Securities Exchange Act of 1934, as amended. 
 (r) “Exchange Program” means a program
under which (i) outstanding Awards are surrendered or cancelled in exchange for cash, Awards of the same type (which may have higher or lower purchase, exercise or base prices and different terms) or Awards of a different type, and/or
(ii) Participants would have the opportunity to transfer any outstanding Awards to a financial institution or other Person selected by the Administrator, and/or (iii) the purchase, exercise or base price of an outstanding Award is reduced
or increased. 
 (s) “Fair Market Value” means, as of any date, the value
of the Common Stock determined in good faith by the Administrator and in a manner consistent with Section 260.140.50 of Title 10 of the California Code of Regulations and, with respect to Nonstatutory Stock Options and Stock Appreciation
Rights, in compliance with Section 409A of the Code. 
 (t) “Incentive Stock Option” means a stock option
granted pursuant to the Plan that by its terms qualifies and is otherwise intended to qualify as an incentive stock option within the meaning of Section 422 of the Code. 

(u) “Nonstatutory Stock Option” means a stock option granted pursuant to the Plan that by its terms does not qualify or
is not intended to qualify as an Incentive Stock Option. 
 (v) “Option” means an Incentive Stock Option or a
Nonstatutory Stock Option. 
 (w) “Participant” means an eligible person to whom an Award is granted pursuant to the
Plan or, if applicable, such other person who holds an outstanding Award. 

  
 -3- 

 (x) “Period of Restriction” means the period during which the
transfer of Restricted Stock is subject to restrictions and, therefore, the Restricted Stock is subject to a substantial risk of forfeiture. Such restrictions may be based on the passage of time, the achievement of target levels of performance or
the occurrence of other events as determined by the Administrator. 
 (y) “Person” means any individual, firm,
corporation, association, partnership, limited liability company, trust, joint venture, governmental entity or other entity. 
 (z)
“Plan” means this 2015 Equity Incentive Plan, as amended from time to time in accordance herewith. 
 (aa)
“Restricted Stock” means Shares issued pursuant to an Award granted under Section 8 or issued pursuant to the early exercise of an Option. 

(bb) “Restricted Stock Unit” means a bookkeeping entry representing an amount equal to the Fair Market Value of one
Share granted under Section 9 and payable in cash, in Shares or in a combination thereof, as specified in the applicable Award Agreement. Each Restricted Stock Unit represents an unfunded and unsecured obligation of the Company. 

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

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

(ee) “Share” means a share of the Common Stock, as adjusted in accordance with Section 13. 

(ff) “Stock Appreciation Right” means the right pursuant to an Award granted under Section 7 to receive, upon
exercise, payment from the Company (in cash, in Shares or in a combination thereof, as specified in the applicable Award Agreement) in an amount determined by multiplying (i) the difference between the Fair Market Value of a Share on the date
of exercise over the base price by (ii) the number of Shares with respect to which the Stock Appreciation Right is exercised. 
 (gg)
“Stock Sale” means a change in ownership of the Company, other than a Change in Control, that occurs when one Person, or more than one Person acting as a group, acquires ownership of stock of the Company, in a stock sale or
exchange, that, together with the stock held by such Person or group, constitutes more than 50% of the total voting power of the stock of the Company; provided, however, that a Stock Sale will not occur if any Person, or more than one
Person acting as a group, owns more than 50% of the total voting power of the stock of the Company and acquires additional stock of the Company; provided, further, that any change in the ownership of the stock of the Company as a
result of a private financing of the Company that is approved by the Board will not be considered a Stock Sale. 

  
 -4- 

 3. Shares Subject to the Plan. 

(a) Share Reserve; Source of Shares. Subject to adjustment as provided in Section 13, the maximum aggregate number of Shares
that are available for all Awards is Two Million Six Hundred Ninety-Four Thousand Five Hundred Twenty-Eight (2,694,528) Shares. During the term of the Awards, the Company shall at all times reserve and keep available such number of Shares as will be
sufficient to satisfy such Awards. The Shares may be authorized but unissued Shares, reacquired Shares or a combination thereof. 
 (b)
Reversion of Shares to the Share Reserve. If Shares subject to an outstanding Award are not issued or delivered or are returned to the Company by reason of (i) the expiration, termination, cancellation or forfeiture of such Award,
(ii) the settlement of such Award in cash, or (iii) the delivery or withholding of Shares to pay all or a portion of the exercise price of an Award, if any, or to satisfy all or a portion of the tax withholding obligations relating to an
Award, then such Shares will revert to and again become available for issuance under the Plan. If the exercise price of any Award is satisfied by tendering Shares held by the Participant, then the number of such tendered Shares will revert to and
again become available for issuance under the Plan. With respect to Stock Appreciation Rights, only Shares actually issued pursuant to a Stock Appreciation Right will cease to be available under the Plan; all remaining Shares under Stock
Appreciation Rights will remain available for future grant or sale under the Plan. Shares that have actually been issued under any Award will not be returned to the Plan and will not again become available for Awards; provided,
however, that if Shares issued pursuant to Awards of Restricted Stock or Restricted Stock Units are repurchased by, or forfeited to, the Company due to the failure to vest, such Shares will become available for future grant under the Plan.

 (c) Other Limits. Subject to adjustment as provided in Section 13, the maximum aggregate number of Shares that may be
issued upon the exercise of Incentive Stock Options will equal the aggregate Share number stated in Section 3(a) plus, to the extent allowable under Section 422 of the Code, any Shares that become available for issuance under the Plan
pursuant to Section 3(b) by reason of the expiration, termination, cancellation or forfeiture of an Award. 
 4. Administration
of the Plan. 
 (a) Procedure. The Plan shall be administered by the Administrator. The Board may terminate the
Committee’s responsibilities hereunder at any time and revest in the Board the administration of the Plan. The members of the Committee will be appointed by, and serve at the pleasure of, the Board. From time to time, the Board may increase or
decrease the size of the Committee and add additional members to, remove members (with or without cause) from, appoint new members in substitution therefor and fill vacancies, however caused, in the Committee. The Committee will act pursuant to a
vote (or written consent) of the majority of its members or, if the Committee is comprised of only two members, the unanimous vote (or written consent) of its members, whether present or not. Minutes will be kept of all of meetings of the Committee,
and copies thereof will be provided to the Board. 
 (b) Powers of the Administrator. Subject to the provisions of the Plan and
Applicable Laws and, if applicable, specific duties delegated by the Board to the relevant Committee, the Administrator will have the authority: 

(i) to determine the Fair Market Value; 

  
 -5- 

 (ii) to select the Service Providers to whom Awards will be granted and the type of Award
that will be granted; 
 (iii) to determine when Awards are to be granted, the applicable grant date and the number of Shares to be covered
by each Award; 
 (iv) to approve forms of Award Agreements for use under the Plan; 

(v) to determine the terms and conditions of any Award, including the purchase, exercise or base price, the time or times when Awards may be
exercised (which may be based on performance criteria), any forfeiture events, any vesting acceleration or waiver of forfeiture restrictions, and any restriction or limitation regarding any Award or the Shares relating thereto, based in each case on
such factors as the Administrator determines; 
 (vi) to institute and determine the terms and conditions of any Exchange Program; 

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

(viii) to establish sub-plans under the Plan, containing such limitations and other terms and
conditions as the Administrator determines are necessary or desirable, for the purpose of satisfying blue sky, securities, tax or other laws of various jurisdictions in which the Company intends to grant Awards or qualifying for favorable tax
treatment under applicable foreign laws; 
 (ix) to prescribe, amend and rescind rules and regulations relating to the Plan, including rules
and regulations relating to sub-plans; 
 (x) to correct any defect, omission or inconsistency in
the Plan or any Award Agreement, in a manner and to the extent it deems necessary or advisable to make the Plan fully effective; 
 (xi) to
amend any outstanding Award, including the discretionary authority to accelerate the time at which an Award may first be exercised or the time during which an Award or any part thereof will vest in accordance with the Plan or to extend the post-termination exercisability period of Awards (subject to Section 409A of the Code) and to extend the maximum term of an Option; 

(xii) to allow Participants to satisfy tax withholding obligations in a manner prescribed by Section 14; 

(xiii) to authorize any individual to execute, on behalf of the Company, any instrument required to carry out the purposes of the Plan; 

(xiv) to allow a Participant to defer the receipt of the payment of cash or the delivery of Shares that otherwise would be due to such
Participant under an Award (subject to Section 409A of the Code); and 

  
 -6- 

 (xv) to make all other determinations deemed necessary or advisable for administering the
Plan. 
 (c) Effect of Administrator’s Decision. Subject to Section 4(a), the Administrator’s decisions,
determinations and interpretations will be final, binding and conclusive on all Persons. 
 5. Eligibility. Nonstatutory Stock
Options, Stock Appreciation Rights, Restricted Stock and Restricted Stock Units may be granted to Service Providers. Incentive Stock Options may be granted only to Employees. 

6. Stock Options. 

(a) Grant of Options. Subject to the terms and conditions of the Plan, the Administrator, at any time and from time to time, may
grant Options in such amounts as the Administrator, in its sole discretion, will determine. 
 (b) Option Agreement. Each Award
of an Option will be evidenced by an Award Agreement that will specify the exercise price, the term of the Option, the number of Shares subject to the Option, the exercise restrictions, if any, applicable to the Option, and such other terms and
conditions as the Administrator, in its sole discretion, will determine. 
 (c) Limitations. Each Option will be designated in
the applicable Award Agreement as either an Incentive Stock Option or a Nonstatutory Stock Option. Notwithstanding such designation, however, to the extent that the aggregate Fair Market Value (determined at the time of grant) of the Shares with
respect to which Incentive Stock Options are exercisable for the first time by any Participant during any calendar year (under all plans of the Company and any Affiliate) exceeds $100,000, such Options or portions thereof that exceed such limit
(according to the order in which they were granted) will be treated as Nonstatutory Stock Options. For purposes of this Section 6(c), calculations will be performed in accordance with Section 422 of the Code. 

(d) Term of Option. The term of each Option will be stated in the applicable Award Agreement; provided, however,
that the term will be no more than ten years from the date of grant thereof; provided, further, that, in the case of an Incentive Stock Option granted to an Employee who, at the time the Incentive Stock Option is granted, owns (or,
pursuant to Section 424(d) of the Code, is deemed to own) stock representing more than 10% of the total combined voting power of all classes of stock of the Company or any Affiliate, the term of the Incentive Stock Option will be five years
from the date of grant thereof or such shorter term as may be provided in the applicable Award Agreement. 
 (e) Exercise Price and
Consideration. 
 (i) Exercise Price. The per Share exercise price for the Shares to be issued pursuant to the
exercise of an Option will be determined by the Administrator, but will be no less than 100% of the Fair Market Value per Share on the date of grant. In addition, in the case of an Incentive Stock Option granted to an Employee who, at the time the
Incentive Stock Option is granted, owns (or, pursuant to Section 424(d) of the Code, is deemed to own) stock representing more than 10% of the total combined voting power of all classes of stock of the Company or any Affiliate, the per Share
exercise price will be no less than 110% of the Fair Market Value per Share on the date of grant. 

  
 -7- 

 (ii) Waiting Period and Exercise Dates. The period during which an Option may
be exercised will be determined by the Administrator at the time such Option is granted; provided, however, that no Option may be exercised after the expiration of its term. The Administrator may, in its sole discretion, determine any
other conditions that must be satisfied before an Option may be exercised. 
 (iii) Form of Consideration. The Administrator
will determine the acceptable form of consideration for exercising an Option, including the method of payment. In the case of an Incentive Stock Option, the Administrator will determine the acceptable form of consideration at the time of grant. To
the extent permitted by Applicable Laws, such consideration, in the Administrator’s sole discretion, may consist entirely of: (1) cash; (2) check; (3) promissory note; (4) other Shares owned by the Participant free and clear
of any liens, claims, encumbrances or security interests, provided that such Shares have a Fair Market Value on the date of surrender equal to the aggregate exercise price of the Shares as to which such Option will be exercised and provided further
that accepting such Shares will not result in any adverse accounting consequences to the Company, as the Administrator determines in its sole discretion; (5) consideration received by the Company under a cashless exercise program (whether
through a broker or otherwise) implemented by the Company in connection with the Plan; (6) a net exercise; (7) such other consideration and method of payment for the issuance of Shares; or (8) any combination of the foregoing methods
of payment. In making its determination as to the type of consideration to accept, the Administrator will consider if acceptance of such consideration may be reasonably expected to benefit the Company. 

(f) Exercise of Option. 

(i) Procedure for Exercise. Any Option will be exercisable according to the terms of the Plan and at such times and under such
conditions as determined by the Administrator and set forth in the applicable Award Agreement. 
 An Option will be deemed exercised when
the Company receives: (1) a notice of exercise (in such form as the Administrator may specify from time to time) from the person entitled to exercise the Option; and (2) full payment for the Shares with respect to which the Option is
exercised (together with applicable tax withholding). Full payment will consist of any consideration and method of payment authorized by the Administrator and permitted by the applicable Award Agreement and the Plan. Shares issued upon exercise of
an Option will be issued in the name of the Participant or, if requested by the Participant, in the name of the Participant and his or her spouse. The Company will issue (or cause to be issued) such Shares as soon as practicable after the Option is
exercised. 
 Exercising an Option in any manner will decrease the number of Shares thereafter available, both for purposes of the Plan and
for sale under the Option, by the number of Shares as to which the Option is exercised. 

  
 -8- 

 (ii) Termination of Relationship as a Service Provider. If a Participant
ceases to be a Service Provider, other than upon the Participant’s termination as the result of his or her death or Disability, the Participant may exercise his or her Option, to the extent it is vested on the date of termination, within 30
days following termination or such longer period of time as is specified in the applicable Award Agreement (but in no event later than the expiration of the term of such Option as set forth in the applicable Award Agreement). If, after such
termination, the Participant does not exercise his or her Option within the time specified in the preceding sentence, the Option will terminate and the Shares covered by such Option will revert to the Plan. Unless otherwise provided by the
Administrator, if on the date of termination the Participant is not vested as to his or her entire Option, the Shares covered by the unvested portion of the Option will revert to the Plan. 

(iii) Disability of Participant. If a Participant ceases to be a Service Provider as a result of his or her Disability, the
Participant may exercise his or her Option, to the extent it is vested on the date of termination, within six months following termination or such longer period of time as is specified in the applicable Award Agreement (but in no event later than
the expiration of the term of such Option as set forth in the applicable Award Agreement). If, after such termination, the Participant does not exercise his or her Option within the time specified in the preceding sentence, the Option will terminate
and the Shares covered by such Option will revert to the Plan. Unless otherwise provided by the Administrator, if on the date of termination the Participant is not vested as to his or her entire Option, the Shares covered by the unvested portion of
the Option will revert to the Plan. 
 (iv) Death of Participant. If a Participant dies while he or she is a Service Provider,
the Participant’s designated beneficiary (provided such beneficiary has been designated, in a form acceptable to the Administrator, prior to the Participant’s death) may exercise the Participant’s Option, to the extent it is vested on
the date of death, within six months following the Participant’s death or such longer period of time as is specified in the applicable Award Agreement (but in no event later than the expiration of the term of such Option as set forth in the
applicable Award Agreement). If no such beneficiary was designated by the Participant prior to his or her death, then the Participant’s Option may be exercised by the personal representative of the Participant’s estate or by the person(s)
to whom the Option is transferred pursuant to the Participant’s will or in accordance with the laws of descent and distribution. If, after death, the Participant’s Option is not so exercised within the time specified in this
Section 6(f)(iv), the Option will terminate and the Shares covered by such Option will revert to the Plan. Unless otherwise provided by the Administrator, if at the time of death the Participant is not vested as to his or her entire Option, the
Shares covered by the unvested portion of the Option will revert to the Plan. 
 7. Stock Appreciation Rights. 

(a) Grant of Stock Appreciation Rights. Subject to the terms and conditions of the Plan, the Administrator, at any time and from
time to time, may grant Stock Appreciation Rights in such amounts as the Administrator, in its sole discretion, will determine. 

  
 -9- 

 (b) Stock Appreciation Rights Agreement. Each Award of a Stock Appreciation
Right will be evidenced by an Award Agreement that will specify the base price, the term of the Stock Appreciation Right, the number of Shares subject to the Award, the conditions of exercise (including vesting criteria), whether the Award is
settled in cash, in Shares or in a combination thereof, and such other terms and conditions as the Administrator, in its sole discretion, will determine. 

(c) Term and Exercise of Stock Appreciation Rights. The term of each Stock Appreciation Right will be stated in the applicable
Award Agreement. Notwithstanding the foregoing, the rules of Section 6(d) relating to the maximum term of an Option and Section 6(f) relating to the exercise of Options also will apply to Stock Appreciation Rights. 

(d) Base Price. The per Share base price for the Shares that will determine the amount of the payment to be received upon
exercise of a Stock Appreciation Right as set forth in Section 7(e) will be determined by the Administrator at the time of grant of the Stock Appreciation Right, but will be no less than 100% of the Fair Market Value per Share on the date of
grant. 
 (e) Payment of Stock Appreciation Right Amount. Upon a Participant’s exercise of a Stock Appreciation Right in
accordance with the applicable Award Agreement, the Participant will be entitled to receive payment from the Company in an amount determined by multiplying: 

(i) the difference between the Fair Market Value of a Share on the date of exercise over the per Share base price determined by the
Administrator in accordance with Section 7(d); by 
 (ii) the number of vested Shares with respect to which the Stock Appreciation
Right is exercised. 
 The payment upon exercise of a Stock Appreciation Right may, in the Administrator’s sole discretion, be in cash,
in Shares of equivalent value or in some combination thereof, as set forth in the applicable Award Agreement. 
 8. Restricted
Stock. 
 (a) Grant of Restricted Stock. Subject to the terms and conditions of the Plan, the Administrator, at any
time and from time to time, may grant Restricted Stock in such amounts as the Administrator, in its sole discretion, will determine. 
 (b)
Restricted Stock Agreement. Each Award of Restricted Stock will be evidenced by an Award Agreement that will specify the Period of Restriction, the number of Shares granted, and such other terms and conditions as the Administrator, in
its sole discretion, will determine. Unless the Administrator determines otherwise, as set forth in the applicable Award Agreement, the Company will hold Restricted Stock, as escrow agent, until the restrictions on such Shares have lapsed. 

(c) Removal of Restrictions. Except as otherwise provided in this Section 8, Shares covered by each grant of Restricted
Stock will be released from escrow as soon as practicable after the last day of the applicable Period of Restriction or at such other time as the Administrator may determine. The Administrator, in its sole discretion, may accelerate the time at
which any restrictions will lapse or be removed. 

  
 -10- 

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

9. Restricted Stock Units. 

(a) Grant of Restricted Stock Units. Subject to the terms and conditions of the Plan, the Administrator, at any time and from
time to time, may grant Restricted Stock Units in such amounts as the Administrator, in its sole discretion, will determine. No Shares will be issued at the time a Restricted Stock Unit is granted, and the Company will not be required to set aside a
fund for the payment of any such Award. 
 (b) Restricted Stock Unit Agreement. Each Award of a Restricted Stock Unit will be
evidenced by an Award Agreement that will specify the number of Shares subject to the Award, the vesting criteria, whether the Award is settled in cash, in Shares or in a combination thereof, and such other terms and conditions as the Administrator,
in its sole discretion, will determine. 
 (c) Vesting Criteria. The Administrator, in its sole discretion, will set vesting
criteria which, depending on the extent to which the criteria are met, will determine the number of Restricted Stock Units that will be paid out to the Participant. The Administrator, in its sole discretion, may set vesting criteria based upon the
achievement of Company-wide, business unit or individual goals (including continued employment or service), or any other basis determined by the Administrator. 

(d) Earning Restricted Stock Units. Upon meeting the applicable vesting criteria, the Participant will be entitled to receive a
payout as determined by the Administrator. Notwithstanding the foregoing, at any time after the grant of a Restricted Stock Unit, the Administrator, in its sole discretion, may reduce or waive any vesting criteria that must be met to receive a
payout. 
 (e) Timing and Form of Payment. Payment of earned Restricted Stock Units will be made at the time, and in the form,
set forth in the applicable Award Agreement, but in no event later than the 15th day of the third month following the end of the calendar year in which such Restricted Stock Units became vested,
except to the extent payment is deferred under an arrangement approved by the Administrator, in accordance with Section 409A of the Code. Settlement of earned Restricted Stock Units may, in the Administrator’s sole discretion, be in cash,
in Shares or in some combination thereof. 
 (f) Return of Restricted Stock Units to Company. On the date set forth in the
applicable Award Agreement, all unearned Restricted Stock Units will revert to the Company and will again become available for grant under the Plan. 

10. Compliance With Section 409A of the Code. Awards will be designed and operated in such a
manner that they are either exempt from the application of, or comply with, the requirements of Section 409A of the Code. The Plan and each Award Agreement are intended to meet the requirements of Section 409A of the Code and will be
construed and interpreted in accordance with such intent, except as otherwise determined in the Administrator’s sole discretion. 

  
 -11- 

 11. Leaves of Absence/Transfer Between Locations. Unless the Administrator
provides otherwise, vesting of a Participant’s Awards will be suspended during his or her unpaid leave of absence from the Company or any Affiliate. A Participant will not cease to be an Employee in the case of (i) any leave of absence
approved by the Company or (ii) transfers between locations of the Company or between the Company and any Affiliate. For purposes of Incentive Stock Options, no such leave of absence may exceed three months, unless reemployment upon expiration
of such leave is guaranteed by statute or contract. If reemployment upon expiration of a leave of absence approved by the Company is not so guaranteed, then six months following the 1st day of
such leave, any Incentive Stock Option held by the Participant will cease to be treated as an Incentive Stock Option and will be treated for tax purposes as a Nonstatutory Stock Option. 

12. Limited Transferability of Awards. Unless determined otherwise by the Administrator, (i) Awards (and, in the case of
Options, the Shares subject to such Options prior to exercise) may not be sold, pledged, assigned, hypothecated or otherwise transferred in any manner, including by entering into any short position, any “put equivalent
position” or any “call equivalent position” (as defined in Rule 16a-1(h) and Rule 16a-1(b), respectively, of the Exchange Act), whether by operation of law or otherwise, other than by will or by the
laws of descent and distribution, and may be exercised, during the lifetime of the Participant, only by the Participant and (ii) Restricted Stock may not be sold, pledged, assigned, hypothecated or otherwise transferred in any manner until the
end of the applicable Period of Restriction. If the Administrator makes an Award transferable, such Award may only be transferred (1) by will, (2) by the laws of descent and distribution, (3) to a revocable trust, or (4) as
permitted by Rule 701 of the Securities Act. The terms of the Plan will be binding upon the executors, administrators, heirs, successors and assigns of the Participants. Notwithstanding the foregoing, the Administrator, in its sole discretion,
may determine to permit transfers to the Company or in connection with a Change in Control, a Stock Sale or other acquisition transaction involving the Company. 

13. Adjustments; Dissolution or Liquidation; Merger, Change in Control or Stock Sale. 

(a) Adjustments. In the event of any dividend or other distribution (whether in the form of cash, Shares, other securities or
other property), recapitalization, reincorporation, stock split, reverse stock split, reorganization, merger, consolidation, split-up, spin-off, combination,
reclassification, repurchase or exchange of Shares or other securities of the Company, or other change in the corporate structure of the Company affecting the Shares, the Administrator, in order to prevent diminution or enlargement of the benefits
or potential benefits intended to be made available under the Plan, will appropriately adjust the number and class of Shares available under the Plan and the number, class and price of Shares subject to each outstanding Award; provided,
however, that (i) the Administrator will make such adjustments to an Award required by Section 25102(o) of the California Corporations Code to the extent the Company is relying upon the exemption afforded thereby with respect to the
Award and (ii) in the case of outstanding Awards consisting of Options and Stock Appreciation Rights, the Administrator will make such adjustments in accordance with Section 409A of the Code. 

  
 -12- 

 (b) Dissolution or Liquidation. In the event of the proposed dissolution or
liquidation of the Company, the Administrator will notify each Participant as soon as practicable prior to the effective date of such proposed transaction. To the extent it has not been previously exercised, the Administrator may cause an Award to
terminate immediately prior to the consummation of such proposed dissolution or liquidation of the Company. 
 (c) Merger, Change in
Control or Stock Sale. In the event of a merger involving the Company, a Change in Control or a Stock Sale, each outstanding Award will be treated as the Administrator (as constituted prior to such merger, Change in Control or Stock Sale)
may determine without the Participant’s consent, subject to such Participant’s Award Agreement. Without limiting the generality of the foregoing sentence, in the event of a merger involving the Company, a Change in Control or a Stock Sale,
the Administrator may, in its sole discretion but subject to such Participant’s Award Agreement, provide that: 
 (i) Awards will be
assumed, or substantially equivalent Awards will be substituted, by the acquiring or succeeding entity (or any affiliate thereof) with appropriate adjustments as to the number and kind of shares and prices; 

(ii) all outstanding Awards, in whole or in part, will be surrendered to the Company by the holder thereof and immediately cancelled by the
Company, with the holder thereof receiving (A) an amount of cash, if any, equal to the amount that would have been attained upon the exercise of such Award or realization of the Participant’s rights as of the date of the occurrence of such
merger, Change in Control or Stock Sale (and, for the avoidance of doubt, if as of the date of the occurrence of such merger, Change in Control or Stock Sale the Administrator determines in good faith that no amount would have been attained upon the
exercise of such Award or realization of the Participant’s rights, then such Award may be terminated by the Company without payment), (B) such other rights or property selected by the Administrator in its sole discretion, or (C) a
combination of (A) and (B); 
 (iii) all outstanding Options and Stock Appreciation Rights will immediately vest and become
exercisable, in whole or in part, all restrictions on Restricted Stock and Restricted Stock Units will lapse, and, with respect to Awards subject to performance-based vesting, all performance goals or other
vesting criteria will be deemed achieved at 100% of target level (or such other level specified by the Administrator) and all other terms and conditions met, in whole or in part, prior to or upon consummation of such merger, Change in Control or
Stock Sale; and/or 
 (iv) any combination of the foregoing. 

In taking any of the actions permitted under this Section 13(c), the Administrator will not be obligated to treat all Awards, all Awards
held by a Participant, or all Awards of the same type, similarly. 
 Notwithstanding anything in this Section 13(c) to the contrary, if
a payment under an Award Agreement is subject to Section 409A of the Code and if the Change in Control or Stock Sale does not constitute a “change in control event” as defined in Section 409A of the Code, then any payment of an
amount that is otherwise accelerated under this Section 13(c) will be delayed until the earliest time that such payment would be permissible under Section 409A of the Code without triggering any penalties applicable under Section 409A
of the Code. 

  
 -13- 

 14. Tax Withholding. 

(a) Withholding Requirements. Prior to the delivery of any Shares or cash pursuant to an Award (or exercise thereof), the Company
will have the power and the right to deduct or withhold, or require a Participant to remit to the Company, an amount sufficient to satisfy federal, state, local, foreign or other taxes (including the Participant’s FICA obligation) required to
be withheld with respect to such Award (or exercise thereof). 
 (b) Withholding Arrangements. The Administrator, in its sole
discretion and pursuant to such procedures as it may specify from time to time, may permit a Participant to satisfy the tax withholding obligations described in Section 14(a), in whole or in part, by (without limitation) (i) paying cash,
(ii) electing to have the Company withhold otherwise deliverable Shares having a Fair Market Value equal to the minimum statutory amount required to be withheld, (iii) delivering to the Company previously owned and unencumbered Shares
having a Fair Market Value equal to the minimum statutory amount required to be withheld, provided the delivery of such Shares will not result in any adverse accounting consequences to the Company, as determined by the Administrator in its sole
discretion, or (iv) selling a sufficient number of otherwise deliverable Shares through such means as the Administrator may determine in its sole discretion (whether through a broker or otherwise) equal to the minimum statutory amount required
to be withheld. The Fair Market Value of the Shares to be withheld or delivered will be determined as of the date that the taxes are required to be withheld. Any fraction of a Share that would be required to satisfy such an obligation will be
disregarded, and the remaining amount due will be paid in cash by the Participant. 
 15. No Effect on Employment or Service.
Nothing in the Plan or any instrument executed, or Award granted, pursuant to the Plan, including any Award Agreement, will confer upon any Participant any right with respect to continuing his or her relationship as a Service Provider, nor will they
interfere in any way with the Participant’s or the Company’s right to terminate such relationship at any time, with or without cause or notice, to the extent permitted by Applicable Laws. 

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

17. Term of Plan. Subject to Section 21, the Plan will become effective upon its adoption by the Board. Unless sooner
terminated under Section 18, the Plan will continue in effect for a term of ten years from the date the Plan is adopted or the date the Plan is approved by the Company’s stockholders, whichever is earlier. No Awards may be granted under
the Plan while the Plan is suspended or after it is terminated. 
 18. Amendment and Termination of the Plan. 

(a) Amendment and Termination. Subject to Section 18(b), the Board may at any time amend, alter, suspend or terminate the
Plan. 

  
 -14- 

 (b) Stockholder Approval. The Company will obtain stockholder approval of any
Plan amendment to the extent necessary and desirable to comply with Applicable Laws. 
 (c) Effect of Amendment or Termination.
Unless the Participant and the Administrator mutually agree otherwise in a written agreement signed by the Participant and the Company, no amendment, alteration, suspension or termination of the Plan will impair the Participant’s rights under
his or her Award. Termination of the Plan will not affect the Administrator’s ability to exercise the powers granted to it hereunder with respect to Awards granted prior to the date of such termination. 

19. Conditions Upon Issuance of Shares. 

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

(b) Investment Representations. As a condition to the exercise of an Award, the Company may require the person exercising such
Award to represent and warrant at the time of any such exercise that the Shares are being purchased only for investment and without any present intention to sell or distribute such Shares if, in the opinion of the Company’s counsel, such a
representation is required. 
 20. Inability to Obtain Authority. The Company’s inability to obtain, after reasonable
efforts, authority from any regulatory body having jurisdiction, which authority is deemed by the Company’s counsel to be necessary for the lawful issuance and sale of any Shares hereunder, will relieve the Company of any liability for failure
to issue or sell such Shares as to which such requisite authority has not been obtained. The Company will not be required to register under the Securities Act the Plan, any Award or any Share issued or issuable pursuant to any Award. 

21. Stockholder Approval of Plan. The Plan must be approved by a majority of the outstanding securities entitled to vote by the
later of (i) within 12 months before or after the date the Plan is adopted by the Board or (ii) prior to or within 12 months of the granting of any Option or issuance of any Share under the Plan in the State of California. Such stockholder
approval will be obtained in the manner, and to the degree, required under Applicable Laws. 
 22. Miscellaneous. 

(a) Stockholder Rights; Voting Rights. Except as otherwise provided in the Plan or the applicable Award Agreement, 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 subject to his or her Award unless and until the Shares underlying the Award are actually issued (as evidenced by the appropriate entry on the
books of the Company or of a duly authorized transfer agent of the Company) notwithstanding the exercise of the Award. During the Period of Restriction, Participants holding Restricted Stock may exercise full voting rights with respect to such
Shares, unless the Administrator, in its sole discretion, determines otherwise. A Participant will have no voting rights with respect to any Restricted Stock Units. 

  
 -15- 

 (b) Dividends and Other Distributions. Unless and until the Shares underlying
an Award are actually issued (as evidenced by the appropriate entry on the books of the Company or of a duly authorized transfer agent of the Company), no right to receive dividends or other distributions will exist with respect to the Shares
underlying such Award, notwithstanding the exercise of the Award. During the Period of Restriction, Participants holding Restricted Stock will be entitled to receive all dividends and other distributions paid with respect to such Shares, unless the
Administrator, in its sole discretion, determines otherwise. If any such dividends or distributions are paid in Shares, such Shares will be subject to the same restrictions on transferability and forfeitability as the Restricted Stock with respect
to which they were paid. 
 (c) No Fractional Shares. No fractional Shares will be issued or delivered pursuant to the Plan.
Except as otherwise provided in the Plan or applicable Award Agreement, the Administrator will determine whether cash, additional Awards or other securities or property will be issued or paid in lieu of fractional Shares or whether any fractional
Shares should be rounded, forfeited or otherwise eliminated. 
 (d) Severability. If any provision of the Plan is held to be
invalid, illegal or unenforceable, in whole or in part, such provision will be deemed modified to the extent, but only to the extent, of such invalidity, illegality or unenforceability, and the remaining provisions will not be affected thereby. 

(e) Headings. The headings contained herein are for purposes of convenience only and are not intended to define or limit the
construction of the provisions hereof. 
 (f) Non-Uniform Treatment. The
Administrator’s determinations under the Plan need not be uniform and may be made by it selectively among persons who are eligible to receive, or actually receive, Awards. Without limiting the generality of the foregoing, the Administrator will
be entitled to make non-uniform and selective determinations, amendments and adjustments and to enter into non-uniform and selective Award Agreements. 

(g) Governing Law. The laws of the State of California will govern all questions concerning the construction, validity and
interpretation of the Plan, without regard to such state’s conflict of law rules. 

  
 -16-EX-10.1(b)

 Exhibit 10.1(b) 

4D MOLECULAR THERAPEUTICS, INC. 

2015 EQUITY INCENTIVE PLAN 

STOCK OPTION AGREEMENT 

This Stock Option Agreement (this “Agreement”) is made and entered into as of «Date_of_Grant» by and
between 4D Molecular Therapeutics, Inc., a Delaware corporation (the “Company”), and «Participant» (“Participant”). Unless otherwise defined herein, capitalized terms used herein shall have
the same defined meanings as set forth in the 4D Molecular Therapeutics, Inc. 2015 Equity Incentive Plan attached hereto as Exhibit A (the “Plan”). 

 

	I.	 NOTICE OF STOCK OPTION GRANT 

Participant has been granted an option to purchase Common Stock, subject to the terms and conditions of the Plan and this Agreement, as
follows: 
  

					
	 Participant:
 Address:
	  		 	 «Participant» 

«Address»

		  		 	«City»
		
	Grant Number:	 	«Grant_Number»
	Grant Date:	 	«Date_of_Grant»
	Vesting Commencement Date:	 	«Vesting_Commencement_Date»
	Exercise Price per Share:	 	$«Exercise_Price_per_Share»
	Number of Shares Subject to Option:	 	«Total_Shares»
	Total Exercise Price:	 	$«Total_Exercise_Price»
	Type of Option:	 	☐ ISO ☐ NSO
	Term/Expiration Date:	 	«Expiration_Date», or earlier as provided in the Plan or this Agreement

 Vesting Schedule: 

This Option shall become vested and exercisable, in whole or in part, according to the following vesting schedule: 

25% of the Shares subject to this Option on the Grant Date shall vest on the one-year anniversary of
the Vesting Commencement Date, and 1/48th of the Shares subject to this Option on the Grant Date shall vest each month thereafter on the same day of the month as the Vesting Commencement Date (or
if there is no corresponding day, on the last day of such month), subject to Participant continuing to be a Service Provider through each such date. 

Termination Period: 

This Option shall be exercisable for three months after Participant ceases to be a Service Provider, unless such termination is due to
Participant’s death or Disability, in which case this Option shall be exercisable for 12 months after Participant ceases to be a Service Provider. Notwithstanding the foregoing sentence, in no event may this Option be exercised after the
Term/Expiration Date as provided above, and this Option may be subject to earlier termination as provided in the Plan. 
  

	II.	 AGREEMENT 

1. Grant of Option. In consideration of the services to be rendered by Participant to the Company or any Affiliate and subject to
the terms and conditions of the Plan and this Agreement, the Administrator hereby grants to Participant an option (this “Option”) to purchase the number of Shares set forth in the Notice of Stock Option Grant in Part I of
this Agreement, at the Exercise Price per Share set forth in the Notice of Stock Option Grant in Part I of this Agreement (the “Exercise Price”). 

If designated as an ISO in the Notice of Stock Option Grant in Part I of this Agreement, this Option is intended to qualify as an Incentive
Stock Option; provided, however, that, to the extent that the aggregate Fair Market Value (determined at the time of grant) of the Shares with respect to which Incentive Stock Options are exercisable for the first time by Participant
during any calendar year (under all plans of the Company and any Affiliate) exceeds $100,000, such Options or portions thereof that exceed such limit (according to the order in which they were granted) shall be treated as Nonstatutory Stock Options.
Further, if for any reason this Option (or portion thereof) shall not qualify as an Incentive Stock Option, then, to the extent of such nonqualification, this Option (or portion thereof) shall be regarded as a Nonstatutory Stock Option. In no event
shall the Administrator, the Company or any Affiliate, or any of their respective employees or directors, have any liability to Participant (or any other Person) due to the failure of this Option (or portion thereof) to qualify for any reason as an
Incentive Stock Option. 
 2. Exercise of Option. 

(a) Right to Exercise. This Option shall be exercisable during its term in accordance with (i) the Vesting Schedule set out
in the Notice of Stock Option Grant in Part I of this Agreement and (ii) the applicable provisions of the Plan and this Agreement. This Option may not be exercised for a fraction of a Share. 

(b) Method of Exercise. This Option shall be exercisable by delivery of an option exercise notice in the form attached hereto as
Exhibit B (the “Option Exercise Notice”) or in a manner and pursuant to such procedures as the Administrator may determine, which shall state the election to exercise this
Option, the whole number of Shares with respect to which this Option is being exercised, and such other representations and agreements as may be required by the Company. If someone other than Participant exercises this Option, as permitted by the
Plan, then such Person must submit documentation reasonably acceptable to the Company verifying that such Person has the legal right to exercise this Option. The Option Exercise Notice shall be accompanied by payment of the aggregate Exercise Price
as to all exercised Shares, together with any applicable tax withholding. This Option shall be deemed to be exercised upon receipt by the Company of such fully executed Option Exercise Notice accompanied by the aggregate Exercise Price, together
with any applicable tax withholding. 
 3. Participant’s Representations. If the Common Stock has not been registered
under the Securities Act at the time this Option is exercised, Participant shall concurrently with the exercise of all or any portion of this Option, if required by the Company, deliver to the Company Participant’s Investment Representation
Statement in the form attached hereto as Exhibit C. 

  
 2 

 4. Lock-Up Period.
Participant will not, during the period commencing on the date of the final prospectus relating to the registration by the Company for its own behalf of shares of its Common Stock or any other equity securities under the Securities Act on a Form S-1 (excluding a registration relating solely to employee benefit plans on Form S-1) or Form S-3 and ending on the
date specified by the Company and the underwriter(s) (such period not to exceed 180 days in the case of the Company’s IPO or 90 days in the case of any registration other than the Company’s IPO, or such other period as may be requested by
the Company or the underwriters to accommodate regulatory restrictions on (i) the publication or other distribution of research reports and (ii) analyst recommendations and opinions, including the restrictions contained in NASD
Rule 2711(f)(4) or NYSE Rule 472(f)(4) (or any successor provisions or amendments thereto), as applicable), (A) sell, dispose of, make any short sale of, offer, hypothecate, pledge, contract to sell, grant any option or contract to
purchase, purchase any option or contract to sell, grant any right or warrant to purchase, lend or otherwise transfer or encumber, directly or indirectly, any Shares or other securities convertible into or exercisable or exchangeable (directly or
indirectly) for shares of Common Stock (whether such Shares or other securities are then held by Participant or thereafter acquired) (such Shares and other securities, the “Lock-Up
Shares”) or (B) enter into any swap, hedging or other arrangement that transfers to another, in whole or in part, any of the economic consequences of ownership of any Lock-Up Shares. The
foregoing provisions of this Section II.4 shall not prevent the exercise of any repurchase option in favor of the Company or apply to the sale of any Lock-Up Shares to an underwriter pursuant to an
underwriting agreement or to the Transfer (as defined in Section II.7) of any Lock-Up Shares by Participant to any trust for the direct or indirect benefit of Participant or an Immediate Family Member (as
defined in the Option Exercise Notice) of Participant (provided that the trustee of the trust agrees, in writing, to be bound by the restrictions set forth herein and provided further that any such Transfer (as
defined in Section II.7) does not involve a disposition for value). Participant shall execute such documents as may be reasonably requested by the Company or the underwriters in connection with any registered offering described in this
Section II.4 and that are consistent with this Section II.4 or necessary to give further effect thereto. 
 5. Method of
Payment. To the extent permitted by Applicable Laws, payment of the aggregate Exercise Price as to all exercised Shares shall be by any of the following methods, or a combination thereof, at Participant’s election: 

(a) cash; 
 (b) check; 

(c) surrender of other Shares which (i) shall be valued at their Fair Market Value on the date of exercise and (ii) must be owned by
Participant free and clear of any liens, claims, encumbrances or security interests, if accepting such Shares, in the Administrator’s sole discretion, will not result in any adverse accounting consequences to the Company; or 

  
 3 

 (d) consideration received by the Company under a cashless exercise program (whether through
a broker or otherwise) implemented by the Company in connection with the Plan. 
 Any fraction of a Share which would be required to pay
such aggregate Exercise Price shall be disregarded, and the remaining amount due shall be paid in cash by Participant. 
 6.
Restrictions on Exercise. This Option may not be exercised unless the issuance of Shares upon such exercise, or the method of payment of consideration for such Shares, complies with Applicable Laws. Assuming such compliance, Shares
shall be considered transferred to Participant, for income tax purposes, on the date on which this Option is exercised with respect to such Shares. 

7. Non-Transferability of Option. This Option (or, prior to exercise, the
Shares subject to this Option) may not be sold, pledged, assigned, hypothecated or otherwise transferred in any manner, including by entering into any short position, any “put equivalent position” or any “call
equivalent position” (as defined in Rule 16a-1(h) and Rule 16a-1(b), respectively, of the Exchange Act), whether by operation of law or otherwise
(“Transfer”), other than by will or by the laws of descent and distribution, and may be exercised, during the lifetime of Participant, only by Participant. The terms of the Plan and this Agreement shall be binding upon the
executors, administrators, heirs, successors and assigns of Participant. 
 8. Term of Option. This Option may be exercised
only (i) within the term set out in the Notice of Stock Option Grant in Part I of this Agreement and (ii) in accordance with the terms and conditions of the Plan and this Agreement. 

9. Tax Obligations. 

(a) Tax Withholding. Participant agrees to make appropriate arrangements satisfactory to the Company to pay or provide for the
satisfaction of all federal, state, local, foreign and other taxes (including Participant’s FICA obligation) required to be withheld with respect to the exercise of this Option. Participant acknowledges and agrees that the Company may refuse to
honor the exercise of this Option, and refuse to deliver the Shares, if such withholding amounts are not delivered by Participant at the time of exercise. 

(b) Notice of Disqualifying Disposition of ISO Shares. If this Option is an Incentive Stock Option, and if Participant makes a
“disposition” (as defined in Section 424 of the Code) of all or any portion of the Shares acquired upon exercise of this Option within two years from the Grant Date set out in the Notice of Stock Option Grant in Part I of this
Agreement or within one year after issuance of the Shares acquired upon exercise of this Option, then Participant shall immediately notify the Company in writing as to the occurrence of, and the price realized upon, such disposition. Participant
agrees that Participant may be subject to income tax withholding by the Company on the compensation income recognized by Participant. 
 (c)
Section 409A of the Code. Under Section 409A of the Code, an Option that was granted with a per Share exercise price that is determined by the U.S. Internal Revenue Service (the
“IRS”) to be less than the Fair Market Value of a Share on the date of grant (a “discount option”) may be considered “deferred compensation.” An Option that is a
“discount option” may result in (i) income recognition by Participant prior to the exercise of this Option, 

  
 4 

 
(ii) an additional 20% federal income tax, (iii) potential penalty and interest charges, and (iv) additional state income, penalty and interest tax to Participant (collectively,
“409A Penalties”). Participant acknowledges that the Company cannot guarantee, and has not guaranteed, that the IRS will agree, in a later examination, that the per Share exercise price of this Option equals or exceeds the
Fair Market Value of a Share on the date of grant. Participant agrees that, if the IRS determines that this Option is a “discount option,” Participant shall be solely responsible for Participant’s costs related to such a
determination, including any 409A Penalties. 
 10. Agreement to Participate. 

(a) Each Holder (as defined in the Option Exercise Notice) agrees that, in the event a Change in Control or Stock Sale is approved by the Board
(if required) and the requisite vote of the Company’s stockholders, and upon receipt from the Company of a Participation Notice (as defined below), such Holder shall (1) vote (in person, by proxy or by written consent, as applicable) all
securities of the Company the holders of which are entitled to vote for members of the Board, including securities of the Company acquired upon exercise or conversion of any options (including this Option), warrants or other convertible securities,
owned by such Holder, or over which such Holder has voting control, in favor of such Change in Control or Stock Sale (together with any related amendment to the Certificate of Incorporation required in order to implement such Change in Control or
Stock Sale) and in opposition to any and all other proposals that could delay or impair the ability of the Company or its stockholders to consummate such Change in Control or Stock Sale and (2) sell or exchange all securities of the Company,
including securities of the Company acquired upon exercise or conversion of any options (including this Option), warrants or other convertible securities (collectively, “Subject Shares”), that such Holder then beneficially
holds pursuant to the terms and conditions of such Change in Control or, in the case of a Stock Sale, sell or otherwise transfer to the acquiring Person all Subject Shares that such Holder then beneficially holds (or in the event that the
Company’s stockholders that approved such Stock Sale are selling fewer than all of their Subject Shares, shares in the same proportion as such stockholders are selling to the acquiring Person) for the same per share consideration in accordance
with the provisions of the Certificate of Incorporation, and on the same terms and conditions (except as otherwise permitted by this Section II.10(a)), as such stockholders, subject to the following conditions: 

(i) such Holder shall not be required in his or her capacity as a stockholder to make any representation or warranty in connection with such
Change in Control or Stock Sale, other than as to such Holder’s ownership and authority to sell, exchange or otherwise transfer such Holder’s Subject Shares in such Change in Control or Stock Sale, free and clear of all claims, rights,
obligations, liens and encumbrances of any nature whatsoever; 
 (ii) such Holder shall not be liable for the inaccuracy of any
representation or warranty made by any other Person in connection with such Change in Control or Stock Sale, other than the Company (except to the extent that funds may be paid out of an escrow established to cover breach of representations,
warranties and covenants of the Company as well as breach by any stockholder of any identical representations, warranties and covenants provided by all stockholders); 

  
 5 

 (iii) the liability for indemnification, if any, of such Holder in such Change in Control
or Stock Sale, and for the inaccuracy of any representations and warranties made by the Company or its stockholders in connection with such Change in Control or Stock Sale, shall be several and not joint with any other Person (except to the extent
that funds may be paid out of an escrow established to cover breach of representations, warranties and covenants of the Company as well as breach by any stockholder of any identical representations, warranties and covenants provided by all
stockholders) and, subject to any provisions of the Certificate of Incorporation relating to the allocation of the escrow, shall be pro rata in proportion to, and shall not exceed, the amount of consideration paid to such Holder in connection with
such Change in Control or Stock Sale; 
 (iv) liability shall be limited to such Holder’s applicable share (determined based on the
respective proceeds payable to each stockholder of the Company in connection with such Change in Control or Stock Sale in accordance with the Certificate of Incorporation) of a negotiated aggregate indemnification amount that applies equally to all
stockholders of the Company but that in no event exceeds the amount of consideration otherwise payable to such Holder in connection with such Change in Control or Stock Sale, except with respect to claims related to fraud by such Holder, the
liability for which need not be limited as to such Holder; 
 (v) as a result of such Change in Control or Stock Sale, (A) each holder
of each class or series of capital stock of the Company shall be entitled to receive the same form of consideration (and be subject to the same indemnity and escrow provisions) for their shares of such class or series as is received by other holders
with respect to their shares of such same class or series of stock, (B) each holder of a series of Preferred Stock of the Company shall receive the same amount of consideration per share of such series of Preferred Stock of the Company as is
received by other holders with respect to their shares of such same series, (C) each holder of Common Stock shall receive the same amount of consideration per share of Common Stock as is received by other holders with respect to their shares of
Common Stock, and (D) unless the holders of each series of Preferred Stock of the Company agree otherwise by legally sufficient amendment or waiver of the provisions of the Certificate of Incorporation then in effect, the aggregate
consideration receivable by all holders of Common Stock and Preferred Stock of the Company shall be allocated among the holders of Common Stock and Preferred Stock of the Company on the basis of the relative liquidation preferences to which the
holders of each respective series of Preferred Stock of the Company and the holders of Common Stock are entitled in a Deemed Liquidation Event (assuming for this purpose that such Change in Control or Stock Sale is a Deemed Liquidation Event (as
defined in the Certificate of Incorporation)) in accordance with the Certificate of Incorporation in effect immediately prior to such Change in Control or Stock Sale; provided, however, that, notwithstanding the foregoing, if the
consideration to be paid in exchange for the Subject Shares pursuant to such Change in Control or Stock Sale includes any securities and due receipt thereof by such Holder would require, under applicable law, (x) the registration or
qualification of such securities or of any Person as a broker, dealer or agent with respect to such securities or (y) the provision to such Holder of any information other than such information as a prudent issuer would generally furnish in an
offering made solely to “accredited investors” as defined in Regulation D promulgated under the Securities Act, then the Company may cause to be paid to such Holder, in lieu of such securities, against surrender of the Subject Shares which
would have otherwise been sold by such Holder, an amount in cash equal to the fair market value (as determined in good faith by the Company) of the securities that such Holder would otherwise receive as of the date of issuance of such securities in
exchange for such Holder’s Subject Shares; and 

  
 6 

 (vi) subject to clause (v) above requiring the same form of consideration to be
available to the holders of any single class or series of capital stock, if any holders of any capital stock of the Company are given an option as to the form and amount of consideration to be received as a result of such Change in Control or Stock
Sale, all holders of such capital stock shall be given the same option; provided, however, that nothing in this Section II.10(a)(vi) shall entitle any holder to receive any form of consideration that such holder would be
ineligible to receive as a result of such holder’s failure to satisfy any condition, requirement or limitation that is generally applicable to the Company’s stockholders. 

The provisions of this Section II.10 shall not be deemed to require any Holder to approve any amendment or waiver of any provision of the
Certificate of Incorporation or otherwise approve a Change in Control or Stock Sale that would not allocate the consideration in accordance with the Certificate of Incorporation. 

“Participation Notice” means a written notice from the Company to such Holder, which notice includes: (x) a
summary of the material terms of the proposed Change in Control or Stock Sale; (y) information relating to any stockholder meeting or action by written consent and instructions with respect to the voting of such Holder’s Subject Shares as
required by this Section II.10(a); and (z) such other information as the Board shall determine is necessary or appropriate. 
 (b)
Each Holder further agrees, with respect to any Change in Control or Stock Sale approved in accordance with Section II.10(a), to (i) refrain from exercising any dissenters’ rights or rights of appraisal under applicable law (if any),
(ii) execute and deliver all related documentation and take such other actions as may be reasonably requested, in writing, by the Company or the acquiring Person in support of such Change in Control or Stock Sale, including executing and
delivering instruments of conveyance and transfer, any purchase agreement, merger agreement, indemnity agreement, escrow agreement, consent, waiver, governmental filing and share certificates duly endorsed for transfer (free and clear of
impermissible liens, claims and encumbrances), and any similar or related documents, and (iii) refrain from entering into any agreement or understanding (including any proxy or voting trust) that would be inconsistent with, or violate, the
provisions of this Section II.10, unless specifically requested to do so, in writing, by the acquiring Person in connection with such Change in Control or Stock Sale. 

(c) In the event that a stockholder representative (the “Stockholder Representative”) is appointed with respect to
matters affecting the Company’s stockholders under the applicable definitive transaction agreements relating to any Change in Control or Stock Sale approved in accordance with Section II.10(a), each Holder agrees (i) to consent to
(x) the appointment of such Stockholder Representative, (y) the establishment of any applicable escrow, expense or similar fund in connection with any indemnification or similar obligations, and (z) the payment of such Holder’s
pro rata portion (from the applicable escrow or expense fund or otherwise) of any and all of such Stockholder Representative’s reasonable fees and expenses arising out of such Stockholder Representative’s services and duties as the
representative of the 

  
 7 

 
Company’s stockholders in connection with such Change in Control or Stock Sale, and (ii) not to assert any claim, or commence any suit, against the Stockholder Representative or any
other stockholder of the Company with respect to any action or inaction by the Stockholder Representative in connection with his or her service as the Stockholder Representative, absent fraud, gross negligence or willful misconduct. 

(d) Participant hereby constitutes and appoints as his or her proxies, and hereby grants a power of attorney to, the Company’s President
and Chief Executive Officer, and each of them, with full power of substitution, to represent and to vote or act by written consent with respect to all securities of the Company that Participant beneficially holds, either as of the date of this
Agreement or at any time thereafter (collectively, the “Proxy Shares”), in accordance with this Section II.10, if and only if Participant or any transferee of any Proxy Shares (i) fails to vote all of the Proxy
Shares in accordance with this Section II.10, (ii) attempts to vote any of the Proxy Shares (whether in person, by proxy or by written consent) in a manner that is inconsistent with this Section II.10, or (iii) fails to take any
action necessary to effect the provisions of this Section II.10. This proxy and power of attorney is given to secure the performance of each Holder’s duties under this Section II.10, and each Holder shall take such further action and
execute such other instruments as may be necessary to effectuate the intent of this proxy. This proxy and power of attorney is coupled with an interest, shall be irrevocable and shall be valid for so long as any of the Proxy Shares are outstanding
until the closing date of the first sale of the Common Stock to the general public pursuant to a registration statement filed with and declared effective by the U.S. Securities and Exchange Commission under the Securities Act (the
“Company IPO”). The authority vested in this proxy shall run with the Proxy Shares regardless of any change in legal ownership thereof. The power of attorney granted by Participant herein is a durable power of attorney and
shall survive Participant’s bankruptcy, death or incapacity. Each party hereto hereby revokes any and all previous proxies and powers of attorney with respect to the Proxy Shares. Each party hereto and each Holder shall not hereafter or after
consummation of the Transfer of Exercised Shares (as defined in the Option Exercise Notice) to such Holder in accordance with Section 5 of the Option Exercise Notice, as applicable, until the Company IPO, (x) purport to grant any other
proxy or power of attorney with respect to any of the Proxy Shares, (y) deposit any of the Proxy Shares into a voting trust, or (z) enter into any agreement, arrangement or understanding with any Person (other than the Company), directly
or indirectly, to vote, grant any proxy or give instructions with respect to the voting of any of the Proxy Shares, in each case, with respect to any of the matters set forth in this Section II.10 

11. General Provisions. 

(a) Power and Authority. Participant hereby represents to the Company that (i) Participant has full power and authority and
legal capacity to enter into, execute and deliver this Agreement and to perform fully Participant’s obligations hereunder (including the proxy appointment described in Section II.10), (ii) the execution, delivery and performance of
this Agreement by Participant does not conflict with, constitute a breach of or violate any arrangement, understanding or agreement to which Participant is a party or by which Participant is bound, and (iii) this Agreement has been duly and
validly executed and delivered by Participant and constitutes the legal, valid and binding obligation of Participant, enforceable against Participant in accordance with its terms. 

  
 8 

 (b) Survival. The representations, warranties, covenants and agreements made
in or pursuant to this Agreement shall survive the execution and delivery hereof and shall not be affected by any investigation made by or on behalf of any party hereto. 

(c) Governing Law. This Agreement shall be governed by and construed in accordance with the laws of the State of California
without regard to conflict-of-law principles; provided, however, that Section II.10 shall be governed by the laws of the State of Delaware without
regard to conflict-of-law principles. 
 (d) Entire
Agreement. This Agreement, together with the attached Exhibits, sets forth the entire agreement and understanding between the parties hereto relating to the subject matter hereof and supersedes all prior and contemporaneous understandings,
agreements, discussions, representations and warranties, both written and oral, between the parties hereto, including any representations made during any interviews or relocation negotiations, with respect to such subject matter. In the event of a
conflict between the terms and conditions of the Plan and this Agreement, the terms and conditions of the Plan shall prevail. 
 (e)
Notices. All notices or other communications required or permitted hereunder shall be in writing and shall be deemed given or delivered (i) when delivered personally, (ii) one business day after being deposited with an
overnight courier service (costs prepaid), (iii) when sent by facsimile or e-mail if sent during normal business hours and on the next business day if sent after normal business hours, in each case with
confirmation of transmission by the transmitting equipment, or (iv) when received or rejected by the addressee, if sent by certified mail, return receipt requested, postage prepaid, in each case to the addresses, facsimile numbers or e-mail addresses and marked to the attention of the persons designated (by name or title) on the signature page hereto, as applicable, or to such other address, facsimile number,
e-mail address or person as such party may designate by a notice delivered to the other party hereto. 

(f) Successors and Assigns; Transfers. The Company may assign this Agreement, and its rights and obligations hereunder, in
whole or in part, to any successor or assign (whether direct or indirect, by purchase, merger, consolidation, sale of assets or stock or otherwise). Except as set forth herein, (x) neither this Agreement nor any rights, duties and obligations
hereunder shall be assigned, transferred, delegated or sublicensed by Participant without the Company’s prior written consent and (y) any attempt by Participant to assign, transfer, delegate or sublicense this Agreement or any rights,
duties or obligations hereunder, without the Company’s prior written consent, shall be void. Subject to any restrictions on transfer set forth herein, this Agreement shall be binding upon, and enforceable against, (i) the Company and its
successors and assigns and (ii) Participant and his or her heirs, executors, successors, assigns, administrators and other legal representatives. Except as set forth herein, any transfer in violation of any restriction upon transfer contained
in any provision hereof shall be void, unless such restriction is waived in accordance with the terms hereof. 
 (g) Modification and
Waiver. This Agreement may not be amended, modified or supplemented except by a written instrument signed by an authorized representative of each party hereto. Any term or provision hereof may be waived, or the time for its performance may
be extended, by the party or parties entitled to the benefit thereof. Any such waiver or extension shall be validly and sufficiently authorized for the purposes hereof if, as to any party, it 

  
 9 

 
is authorized in writing by an authorized representative of such party. The failure or delay of any party to enforce at any time any provision hereof shall not be construed to be a waiver of such
provision, nor in any way to affect the validity of this Agreement or any part hereof or the right of any party thereafter to enforce each and every such provision. No waiver of any breach hereof shall be held to constitute a waiver of any other or
subsequent breach. 
 (h) Further Assurances. Participant shall execute and deliver such additional documents, instruments,
conveyances and assurances and take such further actions as may reasonably be necessary or desirable in the view of the Company to carry out the purposes or intent hereof, including the applicable Exhibits attached hereto. 

(i) Severability. Should any provision contained herein be held as invalid, illegal or unenforceable, such
holding shall not affect the validity of the remainder of this Agreement, the balance of which shall continue to be binding upon the parties with any such modification to become a part hereof and treated as though originally set forth herein. 

(j) Interpretation. For purposes of this Agreement, (i) the words “include,” “includes” and
“including” shall be deemed to be followed by the words “without limitation,” (ii) the word “or” is not exclusive, (iii) the words “herein,” “hereof,” “hereby,”
“hereto,” “hereunder” and words of similar import refer to this Agreement as a whole, and (iv) with respect to the determination of any period of time, “from” means “from and including” and “to”
means “to but excluding.” Unless the context otherwise requires, references herein: (A) to a Section or an Exhibit mean a Section or an Exhibit of, or attached to, this Agreement; (B) to agreements, instruments and other
documents shall be deemed to include all subsequent amendments, supplements and other modifications thereto; (C) to statutes or regulations are to be construed as including all statutory and regulatory provisions consolidating, amending or
replacing the statute or regulation referred to; (D) to any Person includes such Person’s successors and assigns, but, if applicable, only if such successors and assigns are not prohibited by this Agreement; and (E) to any gender
includes each other gender. The Exhibits attached hereto shall be construed with, and as an integral part of, this Agreement to the same extent as if they were set forth verbatim herein. The titles, captions and headings herein are for convenience
of reference only and shall not affect the meaning or interpretation hereof. This Agreement shall be construed without regard to any presumption or rule requiring construction or interpretation against the party drafting an instrument or causing any
instrument to be drafted. 
 (k) Counterparts. This Agreement may be executed in counterparts, each of which shall be
considered an original, but all of which, when taken together, shall be considered one and the same agreement, and shall become binding when one or more counterparts have been signed by each party hereto and delivered to the other party hereto.
Delivery of an executed counterpart of a signature page to this Agreement shall be as effective as delivery of a manually executed counterpart of this Agreement. The exchange of copies of this Agreement and of signature pages hereto by facsimile
transmission or e-mail shall constitute effective execution and delivery of this Agreement and may be used in lieu of the original Agreement for all purposes. Signatures transmitted by facsimile or e-mail shall be deemed to be original signatures for all purposes. 

  
 10 

 (l) Service Relationship At Will. Participant acknowledges and agrees
that the vesting of this Option pursuant hereto is earned only by his or her continuing service as a Service Provider at will (and not through the act of being hired, being granted this Option or acquiring Shares hereunder). Participant further
acknowledges and agrees that this Agreement, the transactions contemplated hereby and the vesting schedule set forth herein do not constitute an express or implied promise of continued engagement as a Service Provider for the vesting period, or for
any period at all, and shall not interfere with the right of either the Company or Participant to terminate Participant’s relationship as a Service Provider at any time, with or without cause or notice. 

(m) Third Party Beneficiary Rights. No provisions hereof are intended, nor shall be interpreted, to provide or create any third
party beneficiary rights or any other rights of any kind in any client, customer, affiliate, stockholder, partner or employee of any party hereto or any other Person, unless specifically provided otherwise herein; provided, however,
that Section II.4 is intended to benefit the underwriters for any registered offering described in Section II.4, and such underwriters shall have the right, power and authority to enforce the provisions of Section II.4 as though they
were parties hereto. 
 (n) Adjustments. In the event of any dividend or other distribution (whether in the form of
cash, Shares, other securities or other property), recapitalization, reincorporation, stock split, reverse stock split, reorganization, merger, consolidation, split-up,
spin-off, combination, reclassification, repurchase or exchange of Shares or other securities of the Company, or other change in the corporate structure of the Company affecting the Shares, the Administrator
will appropriately adjust the number, class and price of Shares subject to this Option, with such adjustment to be made in accordance with Section 25102(o) of the California Corporations Code (to the extent the Company is relying upon the
exemption afforded thereby with respect thereto) and Section 409A of the Code. 
 (o) No Impact on Other Benefits.
The value of this Option is not part of Participant’s normal or expected compensation for purposes of calculating any severance, retirement, welfare, insurance or similar employee benefit. 

(p) Acceptance. Participant acknowledges receipt of a copy of the Plan and represents that he or she is familiar with the
terms and provisions thereof and hereby accepts this Option subject to all of the terms and provisions of the Plan and this Agreement (including all Exhibits attached hereto). Participant has reviewed, and fully understands all provisions of, the
Plan and this Agreement in their entirety (including all Exhibits attached hereto) and has had an opportunity to obtain the advice of his or her own legal counsel, tax advisors and other advisors prior to executing this Agreement. Any questions or
disputes regarding the interpretation of the Plan or this Agreement (including all Exhibits attached hereto), or arising hereunder or thereunder, shall be submitted by the Company or Participant to the Administrator, and Participant hereby agrees to
accept as final, binding and conclusive all decisions, determinations and interpretations of the Administrator upon any such questions or disputes. 

  
 11 

 (q) Equitable Relief. In the event of a breach or threatened breach by
Participant of any provision hereof, Participant hereby consents and agrees that the Company may seek, in addition to other available remedies, injunctive or other equitable relief from any court of competent jurisdiction, without the necessity of
showing any actual damages or that money damages would not afford an adequate remedy, and without the necessity of posting any bond or other security. Participant understands that any breach or threatened breach of this Agreement will cause
irreparable injury and that money damages will not provide an adequate remedy therefor, and Participant hereby consents to the issuance of an injunction or other equitable relief. The aforementioned equitable relief shall be in addition to, and not
in lieu of, legal remedies, monetary damages or other available forms of relief. 
 (signature page follows) 

  
 12 

 IN WITNESS WHEREOF, the undersigned have executed this Stock Option Agreement as of the date first above
written. 
  

			
	COMPANY
	
	4D MOLECULAR THERAPEUTICS, INC.
		
	By:	 	  

	Name:	 	David Kirn
	Title:	 	Chief Executive Officer

			
		
	Notice Address:	 	5980 Horton Street
		 	Suite 460
		 	Emeryville, CA 94608
	Facsimile:	 	
	E-mail:	 	
	Attention:	 	Chief Executive Officer
		
	PARTICIPANT	 	
	
	  

	«Participant»
		
	Notice Address:	 	  

		 	  

		 	  

 Facsimile: 
 E-mail: 
 Attention: 

Exhibits: 
 A – 2015 Equity Incentive Plan 

B – Option Exercise Notice 
 C – Investment
Representation Statement 
 [Signature Page to Stock Option Agreement] 

 EXHIBIT A 

4D MOLECULAR THERAPEUTICS, INC. 

2015 EQUITY INCENTIVE PLAN 

 EXHIBIT B 

OPTION EXERCISE NOTICE 
 4D Molecular
Therapeutics, Inc. 
 5980 Horton Street, Suite 460 

Emeryville, CA 94608 
 Attention: Secretary 

1. Exercise of Option. Effective as of today,
                    , the undersigned (“Participant”) hereby elects to exercise Participant’s option (the
“Option”) to purchase                      shares (the “Exercised Shares”) of the common stock
of 4D Molecular Therapeutics, Inc., a Delaware corporation (the “Company”), under and pursuant to the Company’s 2015 Equity Incentive Plan (the “Plan”) and that certain Stock Option Agreement made
and entered into as of «Date_of_Grant» by and between the Company and Participant (the “Option Agreement”). 

2. Delivery of Payment. Participant herewith delivers to the Company the full exercise price of the Exercised Shares, as set
forth in the Option Agreement, and any and all withholding taxes due in connection with the exercise of the Option. 
 3.
Representations of Participant. Participant acknowledges that Participant has received, read and understood the Plan and the Option Agreement and agrees to abide, and be bound, by their terms and conditions. 

4. Rights as Stockholder. Until the issuance of the Exercised Shares (as evidenced by the appropriate entry on the books of the
Company or of a duly authorized transfer agent of the Company), no right to vote or receive dividends or other distributions or any other rights as a stockholder shall exist with respect to the Exercised Shares, notwithstanding the exercise of the
Option. The Exercised Shares shall be issued to Participant as soon as practicable after the Option is exercised in accordance with the Option Agreement. No adjustment shall be made for a dividend or distribution or other right for which the record
date is prior to the date of issuance, except as provided in Section 13 of the Plan. 
 5.
Company’s Right of First Refusal. Before any Exercised Shares (or any beneficial interest therein) may be Transferred by Participant or any subsequent transferee (each, a
“Holder”), such Holder must first offer such Exercised Shares to the Company and/or its assignee(s) as follows: 

(a) Notice of Proposed Transfer. The Holder shall deliver to the Company a written notice pursuant to Section II.11(e) of
the Option Agreement (a “Transfer Notice”) stating: (i) the Holder’s bona fide intention to Transfer the Exercised Shares; (ii) the name and address of the proposed transferee; (iii) the number of
Exercised Shares to be Transferred to the proposed transferee; (iv) the bona fide cash price or other consideration for which the Holder proposes to Transfer the Exercised Shares; and (v) that, by delivering the Transfer Notice, the Holder
offers all such Exercised Shares to the Company and/or its assignee(s) pursuant to this Section 5 and on the same terms described in the Transfer Notice. 
  

 (b) Exercise of Right of First Refusal. At any time within 30 days after
receipt of a Transfer Notice, the Company and/or its assignee(s) may, by giving written notice pursuant to Section II.11(e) of the Option Agreement (the “Exercise Notice”) to the Holder, elect to purchase any or all of
the Exercised Shares proposed to be Transferred to the proposed transferee, at the purchase price determined in accordance with Section 5(c). 

(c) Purchase Price. The per share purchase price for any Exercised Shares purchased by the Company and/or its assignee(s) under
this Section 5 (the “Company Shares”) shall be the per share price listed in the applicable Transfer Notice. If the price listed in such Transfer Notice includes consideration other than cash, the cash equivalent value
of the non-cash consideration shall be determined by the Board in its sole discretion. 
 (d)
Payment. Payment of the purchase price for any Company Shares shall be made, at the option of the Company and/or its assignee(s), in cash (by check), by cancellation of all or a portion of any outstanding indebtedness of the Holder to
the Company and/or its assignee(s), or by any combination thereof, in any such case within ten days after delivery to the Holder of the applicable Exercise Notice and, at such time, if the Company Shares are certificated shares, the Holder shall
deliver to the Company and/or its assignee(s) the certificate(s) representing the Company Shares, each certificate to be properly endorsed for transfer. 

(e) Holder’s Right to Transfer. If the Company and/or its assignee(s) elects to purchase less than all of the Exercised
Shares proposed in a Transfer Notice to be Transferred to a given proposed transferee, then the Holder (x) may Transfer to the proposed transferee any of such Exercised Shares that the Company and/or its assignee(s) elected not to purchase (the
“Non-Company Shares”); provided, however, that: (i) the Transfer is made only on the terms provided for in the applicable Transfer Notice, with the
exception of the purchase price, which may be either the price listed in such Transfer Notice or any higher price; (ii) the Transfer is consummated within 60 days after the date the applicable Transfer Notice was delivered to the Company;
(iii) the Transfer is effected in accordance with any applicable securities laws and, if requested (in writing) by the Company, the Holder shall have delivered a written opinion of counsel acceptable to the Company to that effect; and
(iv) the proposed transferee agrees in writing to receive and hold the Non-Company Shares so Transferred subject to all of the provisions hereof (including this Section 5) and of the Option Agreement
(including Section II.4 and Section II.10 thereof), and there shall be no further Transfer of any Exercised Shares except in accordance with this Section 5, and (y) shall, in accordance with the other provisions of this
Section 5, sell to the Company and/or its assignee(s) the portion of such Exercised Shares that the Company and/or its assignee(s) has elected to purchase. If any Non-Company Shares are not Transferred to
the proposed transferee within the period provided in clause (ii) above, then, before any such shares may be Transferred, a new Transfer Notice shall be given to the Company, and the Company and/or its assignee(s) shall again be offered the
right of first refusal described in this Section 5. 
 (f) Exception for Certain Family Transfers. Notwithstanding
anything to the contrary contained elsewhere in this Section 5, the Transfer of any or all of the Exercised Shares during the Holder’s lifetime, or on the Holder’s death by will or intestacy, to the Holder’s spouse (or former
spouse) or domestic partner, child or stepchild, grandchild, parent, stepparent, sibling, father-in-law,
mother-in-law, son-in-law, daughter-in-law, brother-in-law, sister-in-law,
grandparent, niece or nephew, including adoptive relationships (each such person, an “Immediate  

  
 2 

 
Family Member”), or to a trust or other similar estate planning vehicle for the benefit of the Holder or any such Immediate Family Member, shall be exempt from the provisions
of this Section 5; provided, however, that, in each such case, the transferee agrees in writing to receive and hold the Exercised Shares so Transferred subject to all of the provisions hereof (including this Section 5) and of
the Option Agreement (including Section II.4 and Section II.10 thereof), and there shall be no further Transfer of such Exercised Shares except in accordance with this Section 5; provided, further, that, without the
Company’s prior written consent, which may be withheld in its sole discretion, no more than three Transfers may be made pursuant to this Section 5(f), including all Transfers by the Holder and all Transfers by any transferee. For purposes
hereof, a person shall be deemed to be a “domestic partner” of another person if the two persons (i) reside in the same residence and plan to do so indefinitely, (ii) have resided together for at least one year, (iii) are
each at least 18 years of age and mentally competent to consent to contract, (iv) are not blood relatives closer than would prohibit legal marriage in the state in which they reside, (v) are financially interdependent, as demonstrated to
the Company’s reasonable satisfaction, and (vi) have each been the sole spousal equivalent of the other for the year prior to the Transfer and plan to remain so indefinitely; provided, however, that a person shall not be
deemed to be a “domestic partner” if he or she is married to another person or has any other spousal equivalent. 
 (g)
Termination of Right of First Refusal. The right of first refusal contained in this Section 5 shall terminate as to all Exercised Shares upon the earlier of: (i) the Company IPO; and (ii) the closing date of a Change in
Control or Stock Sale pursuant to which the holders of the outstanding voting securities of the Company receive securities of a class registered pursuant to Section 12 of the Exchange Act. 

6. Tax Consultation. Participant understands that Participant may suffer adverse tax consequences as a result of
Participant’s purchase or disposition of the Exercised Shares. Participant represents that Participant has consulted with any tax consultants Participant deems advisable in connection with the purchase or disposition of the Exercised Shares and
that Participant is not relying on the Company for any tax advice. 
 7. Restrictive Legends and Stop-Transfer Orders. 
 (a) Legends. Participant understands and agrees that the Company
shall cause the legends set forth below, or substantially equivalent legends, to be placed upon any certificate(s) evidencing ownership of the Exercised Shares, together with any other legends that may be required by the Company or by applicable
federal or state securities laws: 
 THE SECURITIES REPRESENTED BY THIS CERTIFICATE HAVE BEEN ACQUIRED FOR INVESTMENT AND NOT WITH A VIEW TO,
OR IN CONNECTION WITH, THE SALE OR DISTRIBUTION THEREOF AND HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE “ACT”), OR ANY STATE SECURITIES LAWS. THEY MAY NOT BE OFFERED, SOLD OR OTHERWISE TRANSFERRED, PLEDGED OR
HYPOTHECATED EXCEPT AS PERMITTED UNDER THE ACT AND APPLICABLE STATE SECURITIES LAWS PURSUANT TO AN EFFECTIVE REGISTRATION STATEMENT OR AN EXEMPTION THEREFROM. THE ISSUER OF THESE SECURITIES MAY REQUIRE AN OPINION OF COUNSEL SATISFACTORY TO THE
ISSUER THAT SUCH OFFER, SALE, TRANSFER, PLEDGE OR HYPOTHECATION OTHERWISE COMPLIES WITH THE ACT AND ANY APPLICABLE STATE SECURITIES LAWS. 

  
 3 

 THE SECURITIES REPRESENTED BY THIS CERTIFICATE ARE SUBJECT TO CERTAIN RESTRICTIONS ON
TRANSFER, A RIGHT OF FIRST REFUSAL, AN AGREEMENT TO PARTICIPATE AND A LOCK-UP PERIOD IN THE EVENT OF A PUBLIC OFFERING AS SET FORTH IN AGREEMENTS BETWEEN THE ISSUER AND THE ORIGINAL HOLDER OF THESE SECURITIES,
COPIES OF WHICH MAY BE OBTAINED AT THE PRINCIPAL OFFICE OF THE ISSUER. SUCH RESTRICTIONS ON TRANSFER, RIGHT OF FIRST REFUSAL, AGREEMENT TO PARTICIPATE AND LOCK-UP PERIOD ARE BINDING ON TRANSFEREES OF THESE
SECURITIES. 
 (b) Stop-Transfer Notices. In order to ensure compliance
with the restrictions referred to herein and in the Option Agreement, including the provisions of Section II.4 of the Option Agreement, the Company may issue appropriate stop-transfer instructions to its
transfer agent, if any, and, if the Company transfers its own securities, it may make appropriate notations to the same effect in its own records. 

(c) Refusal to Transfer. The Company shall not be required to transfer on its books any Exercised Shares that have been
Transferred in violation of any provision hereof or to treat as owner of such Exercised Shares, or otherwise to accord voting or dividend rights to, any purchaser or other transferee to whom such Exercised Shares shall have been so Transferred. Any
attempt to Transfer Exercised Shares in violation hereof shall be null and void and shall be disregarded by the Company. 
 8.
Capitalized Terms. Unless otherwise defined herein, capitalized terms used herein shall have the same defined meanings as set forth in the Plan or, if not defined therein, in the Option Agreement. 

9. Governing Law; Severability. This Option Exercise Notice shall be governed by and construed in accordance with the laws of the
State of California without regard to conflict-of-law principles. Should any provision contained herein be held as invalid, illegal or unenforceable, such holding shall
not affect the validity of the remainder of this Option Exercise Notice, the balance of which shall continue to be binding upon the parties with any such modification to become a part hereof and treated as though originally set forth herein. 

10. Consent to Notices by Electronic Transmission. Upon becoming a stockholder of the Company and without limiting the
manner by which notice otherwise may be given effectively to Participant, Participant hereby consents in accordance with Section 232 of the Delaware General Corporation Law to stockholder notices given by the Company to Participant by any of
the following forms of electronic transmission: (i) by facsimile telecommunications to the facsimile number set forth on the signature page hereto or to such other facsimile number as Participant may designate by a written notice delivered
to the Company; (ii) by electronic mail to the e-mail address set forth on the signature page hereto or to such other e-mail address as Participant may designate by
a written notice delivered to the Company; (iii) by a posting on an electronic network together with separate notice to Participant of such specific posting; and (iv) by any other form of electronic transmission when directed to
Participant. 

  
 4 

							
	Submitted by:	 	                        	  	Accepted by:
			
	PARTICIPANT	 		  	 COMPANY
  

4D MOLECULAR THERAPEUTICS, INC.

				
	  
	 		  		  	
	Signature	 		  	By:
                                         
                                       
		 		  	Name:
	 «Participant»
	 		  	Title:
	Print Name	 		  		  	
		 		  	Date Received:

  
 5 

 EXHIBIT C 

INVESTMENT REPRESENTATION STATEMENT 
  

					
	PARTICIPANT	 	:    	 	«Participant» (“Participant”)
	COMPANY	 	:    	 	4D Molecular Therapeutics, Inc. (the “Company”)
	SECURITY	 	:    	 	COMMON STOCK
	AMOUNT	 	:    	 	_________________ shares (the “Shares”)
	DATE	 	:	 	_________________

 Unless otherwise defined in this Investment Representation Statement (this “Statement”), capitalized
terms used herein shall have the same defined meanings as set forth in the 4D Molecular Therapeutics, Inc. 2015 Equity Incentive Plan or, if not defined therein, in that certain Stock Option Agreement made and entered into as of
«Date_of_Stock_Option_Agreement» by and between the Company and Participant. 
 In connection with Participant’s purchase of the Shares,
Participant hereby makes the following representations to the Company: 
 1. Investment Intent. Participant is purchasing the Shares solely for
investment for his or her own account, not as a nominee or agent, and not with a view to the resale or distribution (within the meaning of the Securities Act) of any part thereof, except to the extent Participant intends to hold the Shares jointly
with his or her spouse. Participant has no present intention of selling, transferring, granting any participation in, or otherwise distributing any Shares. Participant does not have, with respect to any of the Shares, any contract or other
arrangement with any Person to sell, transfer, grant participations or otherwise distribute the same to such Person or to any third Person. Participant’s investment intent is not limited to Participant’s present intention to hold the
Shares for the minimum capital gains period specified under any applicable tax law, for a deferred sale, for a specified increase or decrease in the market price of the Shares or for any other fixed period in the future. 

2. Participant is Informed About the Company. Participant is sufficiently aware of the Company’s business affairs and financial condition, and has
acquired sufficient information he or she considers necessary or appropriate, to make an informed and knowledgeable investment decision with respect to the Shares. 

3. Participant Can Protect Participant’s Own Interests. Participant can properly evaluate the merits and risks of an investment in the Shares and
can protect his or her own interests in this regard, whether by reason of Participant’s own business and financial expertise, the business and financial expertise of certain professional advisors unaffiliated with the Company (and not
compensated by the Company, directly or indirectly) with whom Participant has consulted, or Participant’s preexisting business or personal relationship with the Company or any of its directors, officers or controlling persons. Participant
acknowledges that the purchase of the Shares involves an extremely high degree of risk and that the Company’s future prospects are uncertain. Participant is able, without materially impairing his or her financial condition, to hold the Shares
for an indefinite period of time and to suffer a complete loss of his or her entire investment. Participant’s purchase of the Shares was not accomplished by a general solicitation or general advertising. 

 4. Participant Knows the Shares are Restricted Securities. Participant understands that the Shares
are “restricted securities” under applicable federal and state securities laws inasmuch as they have not been (i) registered under the Securities Act in reliance upon a specific exemption therefrom, which exemption depends upon, among
other things, the bona fide nature of Participant’s investment intent as expressed in this Statement or (ii) registered or qualified in any state in which they are offered. In this regard, Participant further understands and agrees that:
(i) Participant must hold the Shares indefinitely unless they are registered with the U.S. Securities and Exchange Commission and qualified by state authorities or an exemption from such registration and qualification requirements is available;
(ii) the Company has no obligation to register or qualify Shares for resale; and (iii) the certificate(s) evidencing the Shares, if certificated, will be imprinted with a legend which prohibits the transfer of the Shares unless the Shares
are registered under the Securities Act and applicable state securities laws or such registration is not required in the written opinion of counsel for the Company. 

5. Participant is Familiar With Rule 701 and Rule 144. Participant is familiar with Rule 701 and
Rule 144, each promulgated under the Securities Act (“Rule 701” and “Rule 144”, respectively), which in some circumstances permit
limited public resales of “restricted securities” like the Shares acquired from an issuer in a non-public offering. Rule 701 provides that if the issuer of the Shares qualifies under
Rule 701 at the time of grant of the option to purchase the Shares (the “Option”), the exercise of the Option will be exempt from registration under the Securities Act. If the Company becomes subject to the reporting
requirements of Section 13 or 15(d) of the Exchange Act, 90 days thereafter (or such longer period as any market stand-off agreement may require) the Shares exempt under Rule 701 may be resold,
subject to the satisfaction of the applicable conditions specified by Rule 144, including, in the case of affiliates, (i) the availability of certain current public information about the Company, (ii) the amount of Shares being sold
during any three-month period not exceeding specified limitations, (iii) the sale being made in an unsolicited “broker’s transaction,” transactions directly with a “market maker”
or “riskless principal transactions,” as those terms are defined under the Exchange Act, and (iv) the timely filing of a notice of proposed sale on Form 144, if applicable. If the Company does not qualify under Rule 701 at
the time of grant of the Option, then the Shares may be resold in certain limited circumstances subject to the provisions of Rule 144, which may require, among other things, (i) the availability of certain current public information about
the Company, (ii) the resale occurring more than a specified period after the purchase and full payment (within the meaning of Rule 144) for the Shares, and (iii) in the case of the sale of Shares by an affiliate, the satisfaction of
the conditions set forth in clauses (ii), (iii) and (iv) of the preceding sentence. Participant understands that (x) current public information about the Company is not now available, and the Company has no present plans to make such
information available, (y) the requirements of Rule 144 may never be met and the Shares may never be saleable under Rule 144, and (z) at the time Participant wishes to sell the Shares, there may be no public market for the
Company’s stock upon which to make such a sale or the current public information requirements of Rule 144 may not be satisfied, any of which may preclude Participant from selling the Shares under Rule 144 even if the relevant holding
period has been satisfied. 
 6. Participant Knows that Participant is Subject to Further Restrictions on Resale. Participant understands that, if
Rule 701 or Rule 144 is not available, any future proposed disposition of any of the Shares will not be possible without prior registration under the Securities Act or compliance with some other registration exemption (which may or may not be
available). 

  
 2 

 
Participant understands that, although Rule 701 and Rule 144 are not exclusive, the Staff of the U.S. Securities and Exchange Commission has stated that Persons proposing to sell
private placement securities other than in a registered offering or pursuant to Rule 701 or Rule 144 will have a substantial burden of proof in establishing that an exemption from registration is available for such offers or sales and that
such Persons and their respective brokers who participate in such transactions do so at their own risk. 
 7. Address. The address of
Participant’s principal residence is set forth on the signature page of this Statement. Participant shall promptly inform the Company, in writing, of any change in Participant’s principal residence. 

By signing below, Participant acknowledges Participant’s agreement with each of the statements contained in this Statement as of the date first set forth
above and Participant’s intent for the Company to rely on such statements in issuing the Shares to Participant. 
  

					
	Participant’s Address:	 	                                    	  	  

	  
	 		  	Participant’s Signature
	  
	 		  	
	  
	 		  	 «Participant»

		 		  	Print Name

  
 3

Source: [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00300-of-00352.parquet"}, [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00300-of-00352.parquet"}]]