Document:

EX-10.6

 Exhibit 10.6 

EXECUTIVE EMPLOYMENT AGREEMENT 

This EXECUTIVE EMPLOYMENT AGREEMENT
(“Agreement”) is entered into effective February 19, 2018 (“Effective Date”), by and between Mark Gergen (“Executive”) and Poseida Therapeutics, Inc.
(“Company”). 
 The Company desires to employ Executive and, in connection with such employment, to
compensate Executive for Executive’s personal services to the Company; and 
 Executive desires to provide personal
services to the Company in return for certain compensation. 
 Accordingly, in consideration of the mutual promises and
covenants contained herein, the parties agree to the following: 
 1.    EMPLOYMENT
BY THE COMPANY. 

1.1    At-Will Employment. Executive
shall be employed by the Company on an “at will” basis, meaning either the Company or Executive may terminate Executive’s employment at any time, with or without cause or advanced notice. Any contrary representations that may have
been made to Executive shall be superseded by this Agreement. This Agreement shall constitute the full and complete agreement between Executive and the Company on the “at will” nature of Executive’s employment with the Company, which
may be changed only in an express written agreement signed by Executive and a duly authorized officer of the Company. Executive’s rights to any compensation following a termination shall be only as set forth in Section 6. 

1.2    Position. Subject to the terms set forth herein, the Company agrees to
employ Executive in the position of Chief Financial Officer and Chief Business Officer, and Executive hereby accepts such employment. 

1.3    Duties. As CFO and CBO, Executive will report to the
Chief Executive Officer (“CEO”) and/or such executive designated by the CEO, performing such duties as are normally associated with his position and such duties as are assigned to him from time to time, subject to the
oversight and direction of the CEO or his designee, including work for or on behalf of affiliates of the Company such as its parent, subsidiaries or other group affiliates (together, the “Affiliates”). During the term of Executive’s
employment with the Company, Executive will work on a full-time basis for the Company and will devote Executive’s best efforts and substantially all of Executive’s business time and attention to the business of the Company. Executive shall
perform Executive’s duties under this Agreement principally out of the Company’s corporate headquarters in San Diego, California. In addition, Executive shall make such business trips to such places as may be necessary or advisable for the
efficient operations of the Company. 
 1.4    Company Policies and Benefits. The
employment relationship between the parties shall also be subject to the Company’s personnel policies and procedures as they may be interpreted, adopted, revised or deleted from time to time in the Company’s sole discretion. Executive will
be eligible to participate on the same basis as similarly situated employees in the Company’s benefit 

  
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plans in effect from time to time during his employment. All matters of eligibility for coverage or benefits under any benefit plan shall be determined in accordance with the provisions of such
plan. The Company reserves the right to change, alter, or terminate any benefit plan in its sole discretion. Notwithstanding the foregoing, in the event that the terms of this Agreement differ from or are in conflict with the Company’s general
employment policies or practices, this Agreement shall control. 

2.    COMPENSATION. 

2.1    Salary. Executive shall receive for Executive’s services to be rendered
under this Agreement an initial base salary of $390,000 on an annualized basis, subject to review and adjustment by the Company in its sole discretion, payable subject to standard federal and state payroll withholding requirements in accordance with
the Company’s standard payroll practices (“Base Salary”). 

2.2    Annual Incentive Compensation. During the period Executive employed with the
Company, Executive shall be eligible to earn for Executive’s services to be rendered under this Agreement a discretionary annual incentive compensation in the form of a cash bonus of up to forty percent (40%) of earned Base Salary
(“Target Amount”), based on achievement of individual and corporate performance targets, metrics and/or management-by-objectives
(“MBOs”) to be determined and approved by the Company’s Board of Directors (the “Board”) or the Compensation Committee thereof. Annual incentive compensation is paid on an annual basis, after the close of the fiscal year and
after determination by the Board (or the Compensation Committee thereof) of (i) the level of achievement of the applicable individual and corporate performance targets, metrics and/or MBOs, and (ii) the amount of the annual incentive
compensation earned by Executive (if any). No annual incentive compensation is guaranteed and, in addition to the other conditions for earning such compensation, Executive must remain an employee in good standing of the Company (or one of its
Affiliates) on the scheduled annual incentive compensation payment date in order to be eligible for any annual incentive compensation. This annual incentive compensation program will be the only incentive compensation, commissions, or other bonus
program that will apply to Executive. The annual period over which performance is measured for purposes of this bonus is January 1 through December 31. Any bonus for the first year of employment will be
pro-rated based on the number of days employed during the year in which Executive commences employment. 

2.3    Stock Option. Subject to approval of the Board, Executive will be
granted an option to purchase 375,000 shares of the Company’s common stock pursuant and subject to the Company’s 2015 Equity Incentive Plan (“Plan”) and the Company’s standard form of stock option
agreement (“Option”). The Option shall be an incentive stock option to the extent permissible under Section 422 of the Internal Revenue Code of 1986, as amended (“Code”) and will have an exercise
price per share equal to the fair market value of a share of common stock of the Company as of the date of grant. The Option shall vest according to the following schedule: one-eighth will vest as of the six
month anniversary of the date of grant, and the remaining shares will then vest in equal installments on the final day of each month thereafter over the next 42 months, subject to continuous employment with the Company on such dates. 

2.4    Expense Reimbursement. The Company will reimburse Executive for reasonable
business expenses in accordance with the Company’s standard expense reimbursement policy, as the same may be modified by the Company from time to time. For the avoidance of doubt, to the extent that any reimbursements payable to Executive are
subject to the provisions of Section 409A of 

  
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the Code: (a) any such reimbursements will be paid no later than December 31 of the year following the year in which the expense was incurred, (b) the amount of expenses
reimbursed in one year will not affect the amount eligible for reimbursement in any subsequent year, and (c) the right to reimbursement under this Agreement will not be subject to liquidation or exchange for another benefit. 

3.    PROPRIETARY INFORMATION, INVENTIONS,
AND NON-COMPETITION OBLIGATIONS. As a condition of employment, Executive agrees to execute and
abide by an Employee Proprietary Information and Invention Assignment Agreement attached as Exhibit A (“Proprietary Information Agreement”), which may be amended by the parties from time to time without regard to this
Agreement. The Proprietary Information Agreement contains provisions that are intended by the parties to survive and do survive termination of this Agreement. During Executive’s employment by the Company, Executive will not, without the
express written consent of the Company, directly or indirectly serve as an officer, director, stockholder, employee, partner, proprietor, investor, joint venture, associate, representative or consultant of any person or entity engaged in, or
planning or preparing to engage in, business activity competitive with any line of business engaged in (or planned to be engaged in) by the Company or its Affiliates; provided, however, that Executive may purchase or otherwise acquire up to (but not
more than) one percent (1%) of any class of securities of any enterprise (without participating in the activities of such enterprise) if such securities are listed on any national or regional securities exchange. In addition, Executive will be
subject to certain restrictions (including restrictions continuing after Executive’s employment ends) under the terms of Executive’s Proprietary Information Agreement. 

4.    OUTSIDE ACTIVITIES DURING
EMPLOYMENT. Throughout Executive’s employment by the Company, Executive may engage in civic and
not-for-profit activities so long as such activities do not interfere with the performance of Executive’s duties hereunder or present a conflict of interest with
the Company or its Affiliates. Subject to the restrictions set forth herein, and only with prior written disclosure to and consent of the Board, Executive may engage in other types of business or public activities. The Board may withdraw such
consent, if the Board determines, in its sole discretion, that such activities compromise or threaten to compromise the Company’s or its Affiliates’ business interests or conflict with Executive’s duties to the Company or its
Affiliates. This restriction shall not, however, preclude Executive (i) from owning less than one percent (1%) of the total outstanding shares of a publicly traded company, or (ii) from employment or service in any capacity with Affiliates
of the Company. 
 5.    NO CONFLICT WITH
EXISTING OBLIGATIONS. Executive represents that Executive’s performance of all the terms of this Agreement does not and will not breach any agreement or obligation of any kind
made prior to Executive’s employment by the Company, including agreements or obligations Executive may have with prior employers or entities for which Executive has provided services. Executive has not entered into, and Executive agrees that
Executive will not enter into, any agreement or obligation, either written or oral, in conflict herewith. In Executive’s work for the Company and its Affiliates, Executive will be expected not to make any unauthorized use or disclosure of any
confidential information or materials, including trade secrets, or any former employer or other third party; and not to violate any lawful agreement that Executive may have with any third party. By signing this Agreement, Executive represents that
Executive is able to perform Executive’s job duties within these guidelines, and Executive is not in unauthorized possession or control of any confidential documents, information, or other property of any former employer or third party. In
addition, Executive represents that Executive has disclosed to the Company in writing any agreement Executive may have with any third party (e.g., a former employer) which may limit Executive’s ability to perform

  
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Executive’s duties to the Company or its Affiliates or which could present a conflict of interest with the Company or its Affiliates, including but not limed to disclosure (and a copy) or
any contractual restrictions on solicitations or competitive activities. 

6.    TERMINATION OF
EMPLOYMENT. The parties acknowledge that Executive’s employment relationship with the Company is at-will. The provisions in this Section
govern the amount of compensation, if any, to be provided to Executive upon termination of employment and do not alter this at-will status. 

6.1    Termination by the Company Without Cause. 

(a)    The Company shall have the right to terminate Executive’s employment with the Company
pursuant to this Section 6.1 at any time without “Cause” (as defined in Section 6.2(b) below). A termination pursuant to Sections 6.5 and/or 6.6 below is not a termination without “Cause” for purposes of receiving the
benefits described in this Section 6.1. 
 (b)    If the Company terminates Executive’s
employment at any time without Cause and provided that such termination constitutes a “separation from service” (as defined under Treasury Regulation Section 1.409A-1(h), without regard to any
alternative definition thereunder, a “Separation from Service”), then Executive shall be entitled to receive the Accrued Obligations (defined below) and, subject to Executive’s compliance with the obligations in
Section 6.1(c) below, Executive shall be eligible to receive an amount equal to Executive’s then current Base Salary for six (6) months, less all applicable withholdings and deductions (“Severance”), paid in
equal installments beginning on the Company’s first regularly scheduled payroll date following the Release Effective Date (as defined in Section 6.1(c) below), with the remaining installments occurring on the Company’s regularly
scheduled payroll dates thereafter. All vested options and restricted stock shall be treated in accordance with the terms of the Plan and the applicable stock option agreement or restricted stock agreement. The Company shall pay the premiums for
Executive and his dependents of Executive’s group health insurance COBRA continuation coverage for six (6) months following the date of Executive’s termination of employment, or, if earlier, until the date on which Executive becomes
eligible to receive comparable benefits from another employer. 
 (c)    Executive will be paid all of
the Accrued Obligations on the Company’s first payroll date after Executive’s date of termination from employment or earlier if required by law. Executive shall receive the Severance pursuant to Section 6.1(b) of this Agreement if:
(i) by the 60th day following the date of Executive’s Separation from Service, he has signed and delivered to the Company an effective, general release of claims in favor of the Company
and its affiliates and representatives, in a form acceptable to the Company (the “Release”), which cannot be revoked in whole or part by such date (the date that the Release can no longer be revoked is referred to as the
“Release Effective Date”); and (ii) if he holds any other positions with the Company, he resigns such position(s) to be effective no later than the date of Executive’s termination date (or such other date as
requested by the Board); (iii) he returns all Company property; (iv) he complies with his post-termination obligations under this Agreement and the Proprietary Information Agreement; and (v) he complies with the terms of the Release,
including without limitation any non-disparagement and confidentiality provisions contained in the Release. To the extent that any severance payments are deferred compensation under Section 409A of the
Code, and are not otherwise exempt from the application of Section 409A, then, if the period during which Executive may consider and sign the Release spans two calendar years, the payment of 

  
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Severance will not be made or begin until the later calendar year. 

(d)    For purposes of this Agreement, “Accrued Obligations” are
(i) Executive’s accrued but unpaid salary through the date of termination, (ii) any unreimbursed business expenses incurred by Executive payable in accordance with the Company’s standard expense reimbursement policies, and
(iii) benefits owed to Executive under any qualified retirement plan or health and welfare benefit plan in which Executive was a participant in accordance with applicable law and the provisions of such plan. 

(e)    The severance benefits provided to Executive pursuant to this Section 6.1 are in lieu of, and
not in addition to, any benefits to which Executive may otherwise be entitled under any Company severance plan, policy or program. 

(f)    Any damages caused by the termination of Executive’s employment without Cause would be
difficult to ascertain; therefore, the severance benefits which Executive is eligible pursuant to Section 6.1(b) above in exchange for the Release is agreed to by the parties as liquidated damages, to serve as full compensation, and not a
penalty. 
 6.2    Termination by the Company for Cause. 

(a)    Subject to Section 6.2(c) below, the Company shall have the right to terminate
Executive’s employment with the Company at any time for Cause by giving notice thereof. 

(b)    “Cause” for termination shall mean that the Company has determined in its
sole discretion that the Executive has engaged in any of the following: (i) a material breach of any covenant or condition under this Agreement or any other agreement between the parties; (ii) any act constituting dishonesty,
insubordination, fraud, immoral or disreputable conduct; (iii) any conduct which constitutes a felony under applicable law; (iv) violation of any written Company policy or any act of misconduct; (v) negligence or incompetence
in the performance of Executive’s duties or failure to perform such duties in a manner satisfactory to the Company after the expiration of ten (10) days without cure after written notice of such failure; or (vii) breach of fiduciary
duty or the duty of loyalty. 
 (c)    In the event Executive’s employment is terminated at any
time for Cause, Executive will not receive Severance or any other severance compensation or benefits, except that, pursuant to the Company’s standard payroll policies, the Company shall pay to Executive the Accrued Obligations. 

6.3    Resignation by Executive. 

(a)    Executive may resign from Executive’s employment with the Company at any time by giving
notice. 
 (b)    In the event Executive resigns from Executive’s employment with the Company for
any reason (other than a resignation for Good Reason as described in Section 6.4 below), Executive will not receive Severance or any other severance compensation or benefits, except that, pursuant to the Company’s standard payroll
policies, the Company shall pay to Executive the Accrued Obligations as required by law. 

  
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 6.4    Resignation by Executive for Good
Reason. 
 (a)    Provided Executive has not previously been notified of the Company’s
intention to terminate Executive’s employment, Executive may resign from employment with the Company for Good Reason (as defined in Section 6.4(b) below. 

(b)    “Good Reason” for resignation shall mean the occurrence of any of the
following without Executive’s prior written consent: (i) a material reduction in Executive’s Base Salary of at least 10% of Executive’s Base Salary (unless pursuant to a salary reduction program applicable generally to the
Company’s similarly situated employees); (ii) relocation of Executive’s principal place of employment to a place that is more than fifty (50) miles from his then-current principal place of employment immediately prior to such
relocation; or (iii) the assignment to Executive of any duties or responsibilities which result in the material diminution of Executive’s then current position; provided, however, that the acquisition of the Company and subsequent
conversion of the Company to a division or unit of the acquiring company will not by itself result in a diminution of Executive’s position. Notwithstanding the foregoing, in order to resign for Good Reason, Executive must (1) provide
written notice to the Company within 30 days after the first occurrence of the event giving rise to Good Reason setting forth the basis for Executive’s resignation, (2) allow the Company at least 30 days from receipt of such written notice
to cure such event, and (3) if such event is not reasonably cured within such period, Executive’s resignation from all positions Executive then holds with the Company is effective not later than 30 days after the expiration of the cure
period. Any actions taken by the Company to accommodate a disability of Executive or pursuant to the Family and Medical Leave Act shall not be a Good Reason for purposes of this Agreement. 

(c)    In the event Executive resigns from Executive’s employment for Good Reason, and provided that
such termination constitutes a Separation from Service, then subject to Executive’s compliance with the obligations in Section 6.4(d) below, Executive shall be eligible to receive the same payments and benefits as described in
Section 6.1 and on the same conditions as if Executive had been terminated by the Company without Cause. 

(d)    Executive shall not receive any of the Severance pursuant to Section 6.4(c) unless
(i) he delivers to the Company an effective, general release of claims in favor of the Company in a form acceptable to the Company within sixty (60) days following the date of Executive’s Separation from Service; and (ii) if he
is a member of the Board, he resigns from the Board to be effective no later than the date of Executive’s termination date (or such other date as requested by the Board). Executive’s ability to receive benefits pursuant to
Section 6.4(c) is further conditioned upon his: returning all Company property; complying with his post-termination obligations under this Agreement and the Proprietary Information Agreement; and complying with the general release of claims
including without limitation any non-disparagement and confidentiality provisions contained therein. 

(e)    The benefits provided to Executive pursuant to this Section 6.4 are in lieu of, and not in
addition to, any benefits to which Executive may otherwise be entitled under any Company severance plan, policy or program. 

6.5    Change in Control. Notwithstanding anything herein to the contrary, if the Company
terminates Executive’s employment without Cause or Executive resigns for Good Reason within one (1) month prior to or one (1) year following a Change in Control, in lieu of any payments that

  
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Executive would have been entitled to receive pursuant to Section 6.1 or Section 6.4 herein, Executive shall be entitled to receive: 

(i)    the Accrued Obligations, which shall be paid within thirty (30) days after the date of
Executive’s termination of employment; 
 (ii)    a
lump-sum cash payment in an amount equal to Executive’s then current Base Salary for nine (9) months; 

(iii)    immediate vesting of all outstanding stock options; and 

(iv)    the Company shall pay the premiums for Executive and his dependents of Executive’s
group health insurance COBRA continuation coverage for nine (9) months following the date of Executive’s termination of employment, or, if earlier, until the date on which Executive become eligible to receive comparable benefits from
another employer. 
 “Change in Control” means 

(i)    a sale, lease, exchange or other transfer in one transaction or a series of related
transactions of all or substantially all of the assets of the Company (other than the transfer of the Company’s assets to a majority-owned subsidiary corporation); 

(ii)    a merger or consolidation in which the Company is not the surviving corporation (unless
the holders of the Company’s outstanding voting stock immediately prior to such transaction own, immediately after such transaction, securities representing at least fifty percent (50%) of the voting power of the corporation or other entity
surviving such transaction); 
 (iii)    a reverse merger in which the Company is the surviving
corporation but the shares of the Company’s common stock outstanding immediately preceding the merger are converted by virtue of the merger into other property, whether in the form of securities, cash or otherwise (unless the holders of the
Company’s outstanding voting stock immediately prior to such transaction own, immediately after such transaction, securities representing at least fifty percent (50%) of the voting power of the Company); 

(iv)    any transaction or series of related transactions in which in excess of 50% of the
Company’s voting power is transferred; or 
 (v)    the acquisition by any individual,
entity or group (a “Person”), including any “person” within the meaning of Section 13(d) (3) or 14(d) (2) of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), of beneficial ownership
within the meaning of Rule 13d-3 promulgated under the Exchange Act, of 50% or more of either (1) the then outstanding shares of common stock of the Company (the “Outstanding Common Stock”) or
(2) the combined voting power of the then outstanding securities of the Company entitled to vote generally in the election of directors (the “Outstanding Voting Securities”); excluding, however, the following: (A) any acquisition
directly from the Company (excluding any acquisition resulting from the exercise of an exercise, conversion or exchange privilege unless the security being so exercised, converted or exchanged was acquired directly from the Company), (B) any
acquisition by the Company, (C) any acquisition by an employee benefit plan (or related trust) sponsored or maintained by the Company or any corporation controlled by the Company or (D) any acquisition by any corporation if the holders of
the Company’s outstanding voting 

  
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stock immediately prior to such transaction own, immediately after such transaction, securities representing at least fifty percent (50%) of the voting power of the corporation or other entity
surviving such transaction; provided further that, for purposes of clause (B), if any Person (other than the Company or any employee benefit plan (or related trust) sponsored or maintained by the Company or any corporation controlled by the Company)
shall become the beneficial owner of 50% or more of the Outstanding Common Stock or 50% or more of the Outstanding Voting Securities by reason of an acquisition by the Company and such Person shall, after such acquisition by the Company, become the
beneficial owner of any additional shares of the Outstanding Common Stock or any additional Outstanding Voting Securities and such beneficial ownership is publicly announced, such additional beneficial ownership shall constitute a Change in Control.

 Following such termination of Executive’s employment by the Company without Cause or by executive for Good Reason within one
(1) month prior to or one year following a Change in Control, except as set forth in this Section, Executive shall have no further rights to any compensation or any other benefits under this Agreement. 

6.6    Termination by Virtue of Death or Disability of Executive. 

(a)    In the event of Executive’s death while employed pursuant to this Agreement, all obligations
of the parties hereunder shall terminate immediately, and the Company shall, pursuant to the Company’s standard payroll policies, pay to Executive’s legal representatives all Accrued Obligations. 

(b)    Subject to applicable state and federal law, the Company shall at all times have the right, upon
written notice to Executive, to terminate this Agreement based on Executive’s Disability. Termination by the Company of Executive’s employment based on “Disability” shall mean termination because Executive is unable
due to a physical or mental condition to perform the essential functions of his position with or without reasonable accommodation for 180 days in the aggregate during any twelve (12) month period or based on the written certification by two
licensed physicians of the likely continuation of such condition for such period. This definition shall be interpreted and applied consistent with the Americans with Disabilities Act, the Family and Medical Leave Act, and other applicable law. In
the event Executive’s employment is terminated based on Executive’s Disability, Executive will not receive Severance or any other severance compensation or benefit, except that, pursuant to the Company’s standard payroll policies, the
Company shall pay to Executive the Accrued Obligations. 
 6.7    Termination Due to
Discontinuance of Business. Anything in this Agreement to the contrary notwithstanding, in the event the Company’s business is discontinued because rendered impracticable by substantial financial losses, lack of funding, legal
decisions, administrative rulings, declaration of war, dissolution, national or local economic depression or crisis or any reasons beyond the control of the Company, then this Agreement shall terminate as of the day the Company determines to cease
operation, and Executive will not receive severance payments, or any other severance compensation or benefit, except that, pursuant to the Company’s standard payroll policies, the Company shall pay to Executive the Accrued Obligations. 

6.8    Cooperation With Company After Termination of Employment. Following
termination of Executive’s employment for any reason, Executive agrees to cooperate fully with the 

  
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Company in connection with its actual or contemplated defense, prosecution, or investigation of any claims or demands by or against third parties, or other matters arising from events, acts, or
failures to act that occurred during the period of Executive’s employment by the Company. Such cooperation includes, without limitation, making Executive available to the Company upon reasonable notice, without subpoena, to provide complete,
truthful and accurate information in witness interviews, depositions and trial testimony. In addition, for six months after Executive’s employment with the Company ends for any reason, Executive agrees to cooperate fully with the Company in all
matters relating to the transition of Executive’s work and responsibilities on behalf of the Company, including, but not limited to, any present, prior or subsequent relationships and the orderly transfer of any such work and institutional
knowledge to such other persons as may be designated by the Company. The Company will reimburse Executive for reasonable out-of-pocket expenses Executive incurs in
connection with any such cooperation (excluding forgone wages, salary, or other compensation) and will make reasonable efforts to accommodate Executive’s scheduling needs. 

6.9    Application of Section 409A. It is intended
that all of the severance payments payable under this Agreement satisfy, to the greatest extent possible, the exemptions from the application of Section 409A of the Code and the regulations and other guidance thereunder and any state law of
similar effect (collectively, “Section 409A”) provided under Treasury Regulations Sections 1.409A-1(b)(4) and
1.409A-1(b)(9), and this Agreement will be construed in a manner that complies with Section 409A. If not so exempt, this Agreement (and any definitions hereunder) will be construed in a manner that
complies with Section 409A, and incorporates by reference all required definitions and payment terms. No severance payments will be made under this Agreement unless Executive’s termination of employment constitutes a “separation from
service” (as defined under Treasury Regulation Section 1.409A-1(h)). For purposes of Section 409A (including, without limitation, for purposes of Treasury Regulations Section 1.409A-2(b)(2)(iii)), Executive’s right to receive any installment payments under this Agreement (whether severance payments or otherwise) shall be treated as a right to receive a series of
separate payments and, accordingly, each installment payment hereunder shall at all times be considered a separate and distinct payment. If the Company determines that the severance benefits provided under this Agreement constitutes “deferred
compensation” under Section 409A and if Executive is a “specified employee” of the Company, as such term is defined in Section 409A(a)(2)(B)(i) of the Code at the time of Executive’s Separation from Service, then,
solely to the extent necessary to avoid the incurrence of the adverse personal tax consequences under Section 409A, the timing of the Severance will be delayed as follows: on the earlier to occur of (a) the date that is six months and one
day after Executive’s Separation from Service, and (b) the date of Executive’s death (such earlier date, the “Delayed Initial Payment Date”), the Company will (i) pay to Executive a lump sum amount equal
to the sum of the severance benefits that Executive would otherwise have received through the Delayed Initial Payment Date if the commencement of the payment of the severance benefits had not been delayed pursuant to this Section 6.8 and
(ii) commence paying the balance of the severance benefits in accordance with the applicable payment schedule set forth in Section 6.1. No interest shall be due on any amounts deferred pursuant to this Section 6.8. 

7.    PARACHUTE
PAYMENTS. Except as otherwise provided in an agreement between Executive and the Company, if any payment or benefit Executive would receive from the Company or otherwise in
connection with a Change in Control (“Payment”) would (i) constitute a “parachute payment” within the meaning of Section 280G of the Code, and (ii) but for this sentence, be subject to the excise tax
imposed by Section 4999 of the Code (the “Excise Tax”), then such Payment shall be equal to the Reduced Amount (as defined herein). The “Reduced Amount” shall be either (x) the largest

  
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portion of the Payment that would result in no portion of the Payment being subject to the Excise Tax, or (y) the largest portion, up to and including the total, of the Payment, whichever
amount, after taking into account all applicable federal, state and local employment taxes, income taxes, and the Excise Tax (all computed at the highest applicable marginal rate), results in Executive’s receipt, on an after-tax basis, of the greater amount of the Payment notwithstanding that all or some portion of the Payment may be subject to the Excise Tax. If a reduction in payments or benefits constituting
“parachute payments” is necessary so that the Payment equals the Reduced Amount, reduction shall occur in the manner that results in the greatest economic benefit to Executive. 

The independent registered public accounting firm engaged by the Company for general audit purposes as of the day prior to the effective date
of the event described in Section 280G(b)(2)(A)(i) of the Code shall perform the foregoing calculations. If the independent registered public accounting firm so engaged by the Company is serving as accountant or auditor for the individual,
entity or group effecting such event, the Company shall appoint a nationally recognized independent registered public accounting firm to make the determinations required hereunder. The Company shall bear all expenses with respect to the
determinations by such independent registered public accounting firm required to be made hereunder. The independent registered public accounting firm engaged to make the determinations hereunder shall provide its calculations, together with
detailed supporting documentation, to the Company and Executive within thirty (30) calendar days after the date on which Executive’s right to a Payment is triggered (if requested at that time by the Company or Executive) or such other time
as reasonably requested by the Company or Executive. Any good faith determinations of the independent registered public accounting firm made hereunder shall be final, binding and conclusive upon the Company and Executive. 

8.    GENERAL PROVISIONS. 

8.1    Notices. Any notices required hereunder to be in writing shall be deemed
effectively given: (a) upon personal delivery to the party to be notified, (b) when sent by electronic mail or confirmed facsimile if sent during normal business hours of the recipient, and if not, then on the next business day,
(c) five (5) days after having been sent by registered or certified mail, return receipt requested, postage prepaid, or (d) one (1) day after deposit with a nationally recognized overnight courier, specifying next day delivery, with
written verification of receipt. All communications shall be sent to the Company at its primary office location and to Executive at Executive’s address as listed on the Company payroll, or at such other address as the Company or Executive may
designate by ten (10) days advance written notice to the other. 

8.2    Severability. Whenever possible, each provision of this Agreement will be
interpreted in such manner as to be effective and valid under applicable law, but if any provision of this Agreement is held to be invalid, illegal or unenforceable in any respect under any applicable law or rule in any jurisdiction, such
invalidity, illegality or unenforceability will not affect any other provision or any other jurisdiction, but this Agreement will be reformed, construed and enforced in such jurisdiction as if such invalid, illegal or unenforceable provisions had
never been contained herein. 
 8.3    Survival. Provisions of this
Agreement which by their terms must survive the termination of this Agreement in order to effectuate the intent of the parties will survive any such termination, whether by expiration of the term, termination of Executive’s employment, or
otherwise, for such period as may be appropriate under the circumstances. 

  
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 8.4    Dispute Resolution. To ensure the
rapid and economical resolution of disputes that may arise in connection with Executive’s employment with and services for the Company and its Affiliates, Executive and the Company both agree that any and all disputes, claims, or causes of
action, in law or equity, including but limited to statutory claims, arising from or relating to the enforcement, breach performance, or interpretation of this Agreement, Executive’s employment with and services for the Company and its
Affiliates, will be resolved pursuant to the Federal Arbitration Act, 9 U.S.C. §1-16, and to the fullest extent permitted by (JAMS”) or its successors by a single arbitrator. Both
Executive and the Company acknowledge that by agreeing to this arbitration procedure, each waives the right to resolve any such dispute through a trial by jury or judge or administrative proceeding. 

Any such arbitration proceeding will be governed by JAMS’ then applicable rules and procedures for employment disputes, which can be
found at http://www.jamsadr.com/rules-clauses/ and which will be provided to Executive upon request. In any such proceeding, the arbitrator shall: (a) have the authority to compel adequate discovery for the resolution of the dispute and to
award such relief as would otherwise be permitted by law; and (b) issue a written arbitration decision including the arbitrator’s essential findings and conclusions and a statement of the award. Executive and the Company each shall be
entitled to all rights and remedies that either would be entitled to pursue in a court of law. Nothing in this Agreement is intended to prevent either the Company or Executive from obtaining injunctive relief in court to prevent irreparable harm
pending the conclusion of any such arbitration pursuant to applicable law. The Company shall pay all filing fees in excess of those which would be required if the dispute were decided in a court of law, and shall pay the arbitrator’s fees any
other fees or costs unique to arbitration. Any award or orders in such arbitrations may be entered and enforced as judgments in the federal and state courts of any competent jurisdiction. 

8.5    Waiver. If either party should waive any breach of any provisions of this
Agreement, it shall not thereby be deemed to have waived any preceding or succeeding breach of the same or any other provision of this Agreement. 

8.6    Complete Agreement. This Agreement constitutes the entire agreement between
Executive and the Company with regard to the subject matter hereof. This Agreement is the complete, final, and exclusive embodiment of their agreement with regard to this subject matter and supersedes any prior oral discussions or written
communications and agreements. This Agreement is entered into without reliance on any promise or representation other than those expressly contained herein, and it cannot be modified or amended except in writing signed by Executive and an authorized
officer of the Company. The parties have entered into a separate Proprietary Information Agreement and have or may enter into separate agreements related to equity. These separate agreements govern other aspects of the relationship between the
parties, have or may have provisions that survive termination of Executive’s employment under this Agreement, may be amended or superseded by the parties without regard to this Agreement and are enforceable according to their terms without
regard to the enforcement provision of this Agreement. 
 8.7    Amendment. This
Agreement may not be amended or modified except in a written instrument signed by both Executive and the CEO, with the exception of those changes expressly reserved to the Company’s discretion. 

8.8    Counterparts. This Agreement may be executed in separate counterparts, any one
of which need not contain signatures of more than one party, but all of which taken together will 

  
 11 

 
constitute one and the same Agreement. The parties agree that facsimile and scanned image copies of signatures will suffice as original signatures. 

8.9    Headings. The headings of the sections hereof are inserted for convenience
only and shall not be deemed to constitute a part hereof nor to affect the meaning thereof. 

8.10    Successors and Assigns. The Company shall assign this Agreement and its
rights and obligations hereunder in whole, but not in part, to any Company or other entity with or into which the Company may hereafter merge or consolidate or to which the Company may transfer all or substantially all of its assets, if in any such
case said Company or other entity shall by operation of law or expressly in writing assume all obligations of the Company hereunder as fully as if it had been originally made a party hereto, but may not otherwise assign this Agreement or its rights
and obligations hereunder. The Executive may not assign or transfer this Agreement or any rights or obligations hereunder, other than to his estate upon his death. 

8.11    Choice of Law. All questions concerning the construction, validity and
interpretation of this Agreement will be governed by the laws of the State of California. 

8.12    Interpretation. Any ambiguity in this Agreement shall not be construed
against either party as the drafter. 

  
 12 

 IN WITNESS WHEREOF, the
parties have executed this Executive Employment Agreement on the day and year first written above. 
  

			
	Poseida Therapeutics, Inc.

 
			
		
	By:	 	             /s/ Eric
Ostertag

		 	         Name: Eric Ostertag

        Title: CEO

	
	Executive:
	
	 /s/ Mark Gergen

  
 13 

 Exhibit A 

PROPRIETARY INFORMATION AND INVENTION ASSIGNMENT AGREEMENTEX-10.7

 Exhibit 10.7 

POSEIDA THERAPEUTICS, INC. 

June 13, 2016 
 Matthew Spear, M.D. 

4 Top of State Lane 
 Wilmington, DE 19807 

Re:    Employment Terms 
 Dear
Matthew: 
 On behalf of Poseida Therapeutics, Inc. (the “Company”), I am pleased to offer you employment under the terms set forth in this
offer letter agreement (the “Agreement”). These employment terms will be effective as of your start date, which is anticipated to be June 27, 2016. 

1.    Employment Position; Duties. You will be employed as the Company’s Chief Medical Officer
(“CMO”). In this position, you will report directly to the Company’s President and Chief Operating Officer (the “COO”) and you will have those duties and responsibilities as customary for this position and as
may be directed by the Company or the COO. Your work duties will include work for, or on behalf of, affiliates of the Company, such as its parent, subsidiaries and other group affiliates (together, the “Affiliates”). You will work
from the Company’s offices in San Diego, California beginning no later than August 1, 2016. During your employment, you will devote your full-time best efforts to the business of the Company. 

2.    Base Salary; Employee Benefits; and Business Expenses. 

(a)    Base Salary. Your initial base salary will be paid at the annual rate of $370,000.00, less standard
payroll deductions and tax withholdings. Your base salary will be paid on the Company’s normal payroll schedule. As an exempt salaried employee, you will be required to work the Company’s normal business hours, and such additional time as
appropriate for your work assignments and position. You will not be eligible for extra payment under the overtime laws. 

(b)    Employee Benefits. As a regular full-time employee, you will be eligible to participate in the
Company’s standard employee benefits (pursuant to the terms and conditions of the benefit plans and applicable policies), as they may be terminated or changed from time to time within the Company’s discretion. 

(c)    Business Expenses. Your legitimate and documented business expenses will be reimbursed by the Company
as provided under its business expense reimbursement policies. You will be reimbursed for documented moving expenses to San Diego up to a maximum amount of $20,000. Any such reimbursement is subject to your completion of your relocation by
March 31, 2017 and submission of documentation sufficient to substantiate any such expenses and compliance with the Company’s expense reimbursement policies and procedures. In the event that your employment with the Company is terminated
by the Company for cause or you voluntarily resign, in any event within twenty four months after the date that you relocate, you shall no longer be eligible for any such reimbursements and you shall repay to the Company any relocation expenses
previously reimbursed by the Company. 

 3.    Incentive Compensation. In addition to base salary,
you will be eligible to earn discretionary incentive compensation at an annual target amount of up to thirty percent (30%) of your base salary, based on achievement of individual and corporate performance targets, metrics and/or management-by-objectives (“MBO”) to be determined and approved by the Company’s Board of Directors (the “Board”) or the Compensation
Committee thereof. Annual incentive compensation is paid on an annual basis, after the close of the fiscal year and after determination by the Board (or the Compensation Committee thereof) of (i) the level of achievement of the applicable
individual and corporate performance targets, metrics and/or MBOs, and (ii) the amount of the annual incentive compensation earned by you (if any). No annual incentive compensation is guaranteed and, in addition to the other conditions for
earning such compensation, you must remain an employee in good standing of the Company (or one of its Affiliates) on the scheduled annual incentive compensation payment date in order to be eligible for any annual incentive compensation. This annual
incentive compensation program will be the only incentive compensation, commissions, or other bonus program that will apply to you. 

4.    Equity Award. Subject to approval by the Board, you will be granted an option to purchase 180,000
shares of the Company’s common stock pursuant and subject to the Company’s 2015 Equity Incentive Plan (the “Plan”) and the Company’s standard form of stock option agreement (the “Option”). The Option
shall be an incentive stock option to the extent permissible under Section 422 of the Internal Revenue Code of 1986, as amended (the “Code”) and will have an exercise price per share equal to the fair market value of one share
of the Company’s common stock as of the date of grant. 
 5.    Compliance With Proprietary Information
Agreement and Company Policies. As a condition of employment, you shall sign and comply with the Employee Proprietary Information and Inventions Agreement (the “Proprietary Information Agreement”) which is attached as Exhibit A.
In addition, you are expected to follow the policies and procedures of the Company and its Affiliates, as modified from time to time within the Company’s or Affiliates’ discretion. 

6.    Protection of Third Party Information and Outside Activities. 

(a)    Third Party Information. In your work for the Company and its Affiliates, you will be expected not to
make any unauthorized use or disclosure of any confidential information or materials, including trade secrets, of any former employer or other third party; and not to violate any lawful agreement that you may have with any third party. By signing
this Agreement, you represent that you are able to perform your job duties within these guidelines, and you are not in unauthorized possession or control of any confidential documents, information, or other property of any former employer or third
party. In addition, you represent that you have disclosed to the Company in writing any agreement you may have with any third party (e.g., a former employer) which may limit your ability to perform your duties to the Company or its Affiliates
or which could present a conflict of interest with the Company or its Affiliates, including but not limited to disclosure (and a copy) of any contractual restrictions on solicitations or competitive activities. 

(b)    Outside Activities. Throughout your employment with the Company, you may engage in civic and not-for-profit activities so long as such activities do not interfere with the performance of your duties hereunder or present a conflict of interest with the Company or its
Affiliates. Subject to the restrictions set forth herein, and only with prior written disclosure to and consent of the Board, you may engage in other types of business or public activities. The Board may withdraw such consent, if the Board
determines, in its sole discretion, that such activities compromise or threaten to compromise the Company’s or its Affiliates’ business interests or conflict with your duties to the Company or its Affiliates. 

(c)    Non-Competition. During your employment by the Company, you
will not, without the express written consent of the Company; directly or indirectly serve as an officer, director, 

 
stockholder, employee, partner, proprietor, investor, joint venturer, associate, representative or consultant of any person or entity engaged in, or planning or preparing to engage in, business
activity competitive with any line of business engaged in (or planned to be engaged in) by the Company or its Affiliates; provided, however, that you may purchase or otherwise acquire up to (but not more than) one percent (1%) of any class of
securities of any enterprise (without participating in the activities of such enterprise) if such securities are listed on any national or regional securities exchange. In addition, you will be subject to certain restrictions (including restrictions
continuing after your employment ends) under the terms of your Proprietary Information Agreement. 
 7.    At-Will Employment Relationship. Your employment relationship with the Company is employment at-will. Accordingly, you may terminate your employment with the Company at
any time and for any reason whatsoever simply by notifying the Company; and the Company may terminate your employment at any time with or without cause or prior notice. In addition, the Company retains the discretion to modify your other employment
terms from time to time, including but not limited to your position, duties, reporting relationship, work location, compensation (including base salary and bonus terms), and benefits. 

8.    Dispute Resolution. To ensure the rapid and economical resolution of disputes that may arise in connection
with your employment with and services for the Company and its Affiliates, you and the Company both agree that any and all disputes, claims, or causes of action, in law or equity, including but not limited to statutory claims, arising from or
relating to the enforcement, breach, performance, or interpretation of this Agreement, your employment with and services for the Company and its Affiliates, or the termination of your employment with and services for the Company and its Affiliates,
will be resolved pursuant to the Federal Arbitration Act, 9 U.S.C. §1-16, and to the fullest extent permitted by law, by final, binding and confidential arbitration conducted in San Diego, California by
JAMS, Inc. (“JAMS”) or its successors by a single arbitrator. Both you and the Company acknowledge that by agreeing to this arbitration procedure, you each waive the right to resolve any such dispute through a trial by jury or
judge or administrative proceeding. 
 Any such arbitration proceeding will be governed by JAMS’ then applicable rules and procedures for
employment disputes, which can be found at http://www.jamsadr.com/rules-clauses/ and which will be provided to you upon request. In any such proceeding, the arbitrator shall: (a) have the authority to compel adequate discovery for the
resolution of the dispute and to award such relief as would otherwise be permitted by law; and (b) issue a written arbitration decision including the arbitrator’s essential findings and conclusions and a statement of the award. You and the
Company each shall be entitled to all rights and remedies that either would be entitled to pursue in a court of law. Nothing in this Agreement is intended to prevent either the Company or you from obtaining injunctive relief in court to prevent
irreparable harm pending the conclusion of any such arbitration pursuant to applicable law. The Company shall pay all filing fees in excess of those which would be required if the dispute were decided in a court of law, and shall pay the
arbitrator’s fees and any other fees or costs unique to arbitration. Any awards or orders in such arbitrations may be entered and enforced as judgments in the federal and state courts of any competent jurisdiction. 

9.    General. This Agreement, along with Exhibit A, forms the complete and exclusive statement of
your agreement with the Company regarding the subject matter hereof. It supersedes and replaces any other agreements or promises made to you by anyone concerning your employment terms, whether oral or written. This Agreement may not be amended or
modified except by a written modification signed by you and a duly authorized officer of the Company, with the exception of those changes expressly reserved to the Company’s discretion in this Agreement. This Agreement is governed by the laws
of the state of California, without reference to conflicts of law principles. If any provision of this Agreement shall be held invalid or unenforceable in any respect, such invalidity or unenforceability shall not affect the other

 
provisions of this Agreement, and such provision will be reformed, construed and enforced so as to render it valid and enforceable consistent with the general intent of the parties insofar as
possible under applicable law. With respect to the enforcement of this Agreement, no waiver of any right hereunder shall be effective unless it is in writing. Any ambiguity in this Agreement shall not be construed against either party as the
drafter. This Agreement may be executed in counterparts which shall be deemed to be part of one original, and facsimile signatures shall be equivalent to original signatures. 

This offer is contingent on the successful completion of a background check. To confirm your terms of employment, please sign and date this letter and sign
and date the Proprietary Information Agreement attached as Exhibit A, and return one signed copy of both documents to me by close of business on June 15, 2016. Please let me know if you have any questions. 

Sincerely, 
  

									
	POSEIDA THERAPEUTICS, INC.	 		 	
					
	By:	 	 /s/ Nishan de Silva
	 		 		 	
		 	 Nishan de Silva, M.D.
	 		 		 	
		 	 President and Chief Operating Officer
	 		 		 	
				
	Reviewed, Understood, and Accepted:	 		 		 	
				
	/s/ Matthew Spear, M.D.	 		 	 	 	16 June 19
	 Matthew Spear, M.D.
	 		 		 	Date
				
	Exhibit A: Proprietary Information Agreement	 		 		 	

 Exhibit A 

PROPRIETARY INFORMATION AGREEMENT

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