Document:

FOR VALIDATION PURPOSES ONLY - [657001.EX10_55]

 Exhibit 10.55 

SEVERANCE AGREEMENT AND GENERAL RELEASE 

This Severance Agreement and Mutual Release (“Severance Agreement”) is made by and between Dallas G, Caudle, Jr., Internal Loan
Review Manager/Rutherford County Market President (hereinafter “Mr. Caudle”) and Franklin Synergy Bank, a Tennessee banking holding company corporation (hereinafter the “Bank”) (and Mr. Caudle and Bank sometimes
hereinafter collectively referred to as the “Parties”). 
 WHEREAS, Mr. Caudle has been an employee of the Bank pursuant to
which Mr. Caudle has served as the [position] of the Bank; 
 WHEREAS, the Bank and Mr. Caudle are parties to that certain
Confidentiality, Non-Competition and Non-solicitation Agreement dated July 1, 2014 (the “Non-Compete Agreement”) pursuant to which the Bank and
Mr. Caudle have certain obligations to each other following Mr. Caudle’s separation from employment with the Bank; 

WHEREAS, Mr. Caudle desires to voluntarily resign his employment to retire; and 

WHEREAS the Bank wishes to accept Mr. Caudle’s retirement and resolve any and all issues surrounding the termination of
Mr. Caudle’s employment with the Bank in this Severance Agreement. 
 NOW, THEREFORE, in consideration of the foregoing promises
and the terms stated herein, it is mutually agreed between the parties as follows: 
 1. Separation From Employment.
Mr. Caudle’s separation from employment with the Bank is effective on January 15, 2019 (the “Separation Date”), and all obligations between the parties under the Employment Agreement and the
Non-Competition Agreement subsequent to Mr. Caudle’s separation will be calculated, applied and interpreted based upon such Separation Date. 

2. Cessation of Regular Compensation. The Company will pay Mr. Caudle all earned wages up to his Separation Date, and all
accrued but unused paid time off, but excluding unused “banked” time (as that term is used in the Bank’s employment policies). These wages and paid time off payments will be paid through the normal payroll processes, including tax
withholding. Except as provided in Section 5 (a) of the Non-Competition Agreement, Mr. Caudle shall not be entitled to any additional compensation from the Bank from and after the Separation Date
under the Employment Agreement. 
 3. Non-Compete Agreement. Mr. Caudle’s
obligations under Section 4 of the Non-Competition Agreement shall continue until the one year anniversary of Mr. Caudle’s Separation Date. The Company’s obligations to Mr. Caudle
pursuant to Section 5 (a) of the Non-Compete Agreement shall continue for the period provided therein so long as Mr. Caudle is not in violation of his obligations under Section 4 of the Non-Compete Agreement; provided, it is understood that the sole payment that the Bank is obligated to pay to Mr. Caudle under the Non-Compete Agreement is the
payment referenced in Paragraph 4 herein. For purposes of paragraphs 3 and 4 hereof, Sections 4 and 5 of the Non-Competition Agreement are incorporated herein in their entirety by reference. 

  
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 4. Total Severance Payment. In consideration for Mr. Caudle’s
obligations under the Non-Competition Agreement, the Company shall pay Mr. Caudle twelve (12) months of Mr. Caudle’s current base pay of $200,000 less applicable taxes and withholdings. The
severance amount less the deductions noted above will be payable to Mr. Caudle in equal bi-monthly installments of $8,333,33 on the 15th day and the
last day of each calendar month commencing January 31, 2019. Additionally, the Company shall pay Mr. Caudle one (1) times the average cash incentive bonus based on the last three (3) years averaged cash incentive bonus pay (which
is equal to a total of $5,934.25 less applicable taxes and withholdings) and will be paid in equal bi-monthly installments of $247,26 on the 15th day of the
month and the last day of each month beginning on the next regular pay date following Mr. Caudle’s termination of employment; 

5. Treatment of Stock Options and Restricted Stock. As a result of Mr. Caudle’s retirement, any unvested awards of
options, restricted stock, stock appreciation rights, or other forms of equity compensation or awards shall become fully vested as of Mr. Caudle’s Separation Date regardless of the terms of the 2017 Omnibus Equity Incentive Plan and any
Awards and Award Notices (as defined in such plan), and any other documents and plans pursuant to which such award of equity compensation was awarded. Except as described in this Paragraph 4, the Bank has no other payment obligations to
Mr. Caudle under the Employment Agreement Non-Compete Agreement or otherwise. 
 6.
Termination of AH Fringe Benefits at Separation Date. Mr. Caudle’s coverage under the Bank’s group insurance programs, including medical, dental, vision with cease on January 31, 2019; short term disability, long
term disability, executive life and other employee benefit programs will cease as of the Separation Date. Mr. Caudle shall be eligible to continue health insurance coverage for himself and his family through COBRA for as long as otherwise
provided under COBRA, and subject to Mr. Caudle’s payment of any required premiums. 
 7. Release of Age and All Other
Claims: Mr. Caudle agrees not to file, pursue or prosecute any suit, charge, complaint, action or claim of any nature whatsoever arising out of Mr. Caudle’s employment with the Bank, its subsidiaries, parent companies, and
affiliated companies, or Mr. Caudle’s separation from such employment. Mr. Caudle further hereby individually and collectively, for himself, his estate, agents, attorneys, successors, heirs, executors, administrators, insurers and
assignees, irrevocably and unconditionally release and discharge the Bank and its respective related subsidiaries, parent companies, and their respective agents, directors, parent corporations, sister corporations, subsidiary corporations,
affiliates, officers, employees, representatives, attorneys, insurers, predecessors and successors (hereinafter collectively referred to as “the Releasees”) from any and all actions, causes of action, suits, debts, charges, complaints,
claims, liabilities, obligations, promises, agreements, controversies, damages and expenses (including attorney’s fees and cost actually incurred) of any nature whatsoever, in law or equity, whether known or unknown, which Mr. Caudle ever had,
or may have had, against Releasees since the beginning of time to the execution of this Severance Agreement. 

  
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 Claims being released under this Severance Agreement include, but are not limited to, any
and all claims against the Releasees arising under any federal, state, or local statutes, ordinances, resolutions, regulations, constitutional provisions and/or common law(s), from any and all actions, causes of action, lawsuits, debts, charges,
complaints, liabilities, obligations, promises, agreements, controversies, damages and expenses of any and every nature whatsoever, both legal and equitable, whether known or unknown, which Mr. Caudle had, has ever had, now has or may have
against the Releasees as of the date of execution of this Agreement, including, but not limited to: 
 (i) any and all claims which were, or
could have been, asserted in any lawsuit or administrative action or proceeding; 
 (ii) any and all claims arising out of
Mr. Caudle’s employment by the Releasees and Mr. Caudle’s separation from that employment; 
 (iii) any and all claims
of discrimination or retaliation arising under local, state or federal law including, but not limited to, Title VII of the Civil Rights Act of 1964; 42 U.S.C. §§ 1981,1981 A, 1983 and 1985; the Age Discrimination in Employment Act; the
Americans With Disabilities Act; the Federal Rehabilitation Act of 1973; the Older Workers Benefit Protection Act; the Family and Medical Leave Act of 1993; the Genetic Information Nondiscrimination Act; the Employee Retirement Income Security Act
of 1974; Executive Order 11246; the Tennessee Human Rights Act; each, as amended, and all other such similar statutes, city or county ordinances or resolutions and applicable anti-discrimination laws; 

(iv) any and all tort claims including, but not limited to, claims of wrongful termination, constructive discharge, defamation, invasion of
privacy, interference with contract, interference with prospective economic advantage, and intentional or negligent infliction of emotional distress and outrage; 

(v) any and all contract claims whether express or implied; 

(vi) any and all claims for unpaid benefits or entitlements asserted under any Company plan, policy, benefits offering or program except any
vested retirement or pension benefits, if any, or as otherwise required by law or preserved in this Severance Agreement; and 
 (vii) any
and all claims for attorneys’ fees, interest, costs, injunctive relief or reinstatement to which Mr. Caudle is, claims to be or may be, entitled. 

8. Agreement Not to Sue: In consideration of the Company’s promises, payments and other consideration contained herein,
Mr. Caudle hereby further agrees that if any claim referenced herein is filed, pursued, or otherwise prosecuted by Mr. Caudle, individually or collectively, or by any persons or entities, by or through him or on his behalf, individually or
collectively, Mr. Caudle waives his rights to relief from such claim, including the right to attorneys’ fees, costs and any and all other relief whether legal or equitable, sought in such claim, and agrees to indemnify and hold Releasees
harmless from such claim, including attorneys’ fees and costs. If Mr. Caudle violates this Severance Agreement by suing the Bank or the Releasees, Mr. Caudle agrees that he will pay all costs and expenses of defending against the suit
incurred by the Bank or the Releasees. Nothing in this Section 7 will prevent Mr. Caudle from bringing claims against the Bank arising out of a breach of this Agreement. 

  
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 9. Absence of Claims. Mr. Caudle also acknowledges, represents and
warrants that he has not filed or assigned any claims, charges, complaints, or grievances against the Bank. 
 10. No Unreimbursed
Expenses. Mr. Caudle has no outstanding business expenses which he has incurred on behalf of the Bank, and has been fully reimbursed for any previously submitted expenses. 

11. Return of Property: Mr. Caudle further acknowledges and agrees that he shall return to the Bank, or its appropriate
related and/or subsidiary companies, any and all the Bank property, including but not limited to, keys to the Bank properties, passwords, electronic passwords, documents, handbooks, policies and procedures, client lists, personnel ID’s, all
written or electronically recorded materials that Mr. Caudle has in his possession or control concerning information that relates to the business of the Bank, including without limitation, all financial information, budgets, projections,
personnel information, insurance records, information relating to any lawsuits, customer information, and all summaries, extracts and notes relating thereto. In addition, Mr. Caudle agrees that neither he nor his attorneys or other agents will
keep any originals or copies of the foregoing retained or acquired by Mr. Caudle during or following Mr. Caudle’s employment with the Bank. Mr. Caudle further acknowledges that he will not destroy any information in his custody
or possession relating to or belonging to the Bank. 
 12. Non-Disparagement: In consideration of the Company’s promises,
payments and other consideration contained herein, Mr. Caudle further agrees he will not do or say anything that would have the effect of diminishing or damaging the goodwill and good reputation of the Bank, its related or subsidiary companies,
officers, directors, employees, or the Bank’s products and services. 
 13. Cooperation: In consideration of the
Company’s promises, payments and other consideration contained herein, Mr. Caudle agrees to cooperate fully and assist the Bank in connection with any current or subsequent legal, administrative or regulatory matter or other proceedings
involving the Bank. 
 14. Advice to Seek Counsel/Time to Consider: Mr. Caudle further acknowledges that the Bank has
advised Mr. Caudle that he may consult an attorney of Mr. Caudle’s choosing, at his own expense and that he has been given at least twenty-one (21) calendar days to consider the terms of
this Severance Agreement. 
 15. Revocation Period: Mr. Caudle acknowledges that he has been advised that he may revoke
this Severance Agreement at any time during a period of seven (7) calendar days following Mr. Caudle’s execution of it, by notifying the Bank both via email copy and by overnight mail, of his intent to do so. Any revocation must be in
writing and received by the Bank by the close of business (5:00 p.m. Central time) of the 7th day after Mr. Caudle has signed the Severance Agreement. As of the close of business of the 7th day, if Mr. Caudle has not previously revoked
this Severance Agreement or the waiver of claims contained therein, it will be effective and enforceable. 

  
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 16. No Admission of Wrongdoing. It is understood and agreed that this
Severance Agreement does not and shall not constitute an admission by the Bank or Mr. Caudle that it or he has violated any law or any right of the other. 

17. Confidentiality. In consideration of the Company’s promises, payments and other consideration contained herein,
Mr. Caudle agrees to hold this Agreement and its terms in confidence and not to disclose or discuss the existence of this Agreement or its contents with anyone, including employees of the Bank and its affiliates, except his attorneys and
immediate family members. 
 18. Severability/Enforcement: Should this Severance Agreement be held invalid or unenforceable,
(in whole or in part), with respect to any particular claims or circumstances, it shall remain fully valid and enforceable as to all other claims and circumstances. As to any actions or claims which would be released because of the invalidity or
unenforceability of this Severance Agreement and Mutual Release, it is agreed that all monies paid hereunder to Mr. Caudle be returned with interest at ten percent (10%) per annum as a prerequisite to bringing or asserting any such claims. 

19. Applicable Law: This Severance Agreement shall be construed in accordance with the laws of the State of Tennessee, and its
terms shall in all cases be interpreted as a whole, according to its fair meaning, and not strictly for or against either of the Bank or Mr. Caudle. 

20. Whole Agreement: The Parties further agree that this Severance Agreement sets forth the entire agreement between the Parties
hereto and fully supersedes any and all prior agreements or understandings between them which have not been fully incorporated by reference into this document. This Severance Agreement may be amended or superseded only by a subsequent writing
executed by all Parties. 
 21. Knowing and Voluntary Agreement: The Parties represent and certify that they have carefully
read and fully understand all of the provisions of this Severance Agreement, that they have had ample and adequate opportunity to thoroughly discuss all aspects of this Severance Agreement with legal counsel of their own choosing, that they are
voluntarily entering into this Severance Agreement and that no representations have been made other than those set forth explicitly herein. 

22. Internal Revenue Code Section 409A: the Bank intends that if any payments and benefits are provided under this
Severance Agreement they shall either be exempt from the application of, or comply with, the requirements of Code Section 409A. The Severance Agreement shall be construed in a manner that supports the Bank’s intent to be exempt from or
comply with Code Section 409A. Notwithstanding anything in the Severance Agreement to the contrary, the Bank may amend the Severance Agreement, to take effect retroactively or otherwise, as deemed necessary or advisable for the purpose of
remaining exempt from or complying with the requirements of Code Section 409A, provided however that any such amendment will not otherwise modify the material financial terms of this Severance Agreement. Whenever payments under the Severance
Agreement are to be made in installments, each such installment shall be deemed to be a separate payment for purposes of Code Section 409A. Further, (a) in the event that Code Section 409A requires that any special terms, provisions
or 

  
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conditions be included in this Severance Agreement, then such terms, provisions and conditions shall, to the extent practicable, be deemed to be made a part of this Severance Agreement, and
(b) terms used in this Severance Agreement shall be construed in accordance with Code Section 409A if and to the extent required. Further, in the event that this Severance Agreement or any benefit thereunder shall be deemed not to comply
with Code Section 409A, then neither the Bank, its Board, its officers, its employees, any of the Bank’s committees nor its or their designees or agents shall be liable to Mr. Caudle or other persons for actions, decisions or
determinations made in good faith. If this provision prevents the payment or distribution of any non-exempt deferred compensation, such payment or distribution shall be made on the date, if any, on which an
event occurs that constitutes a Code Section 409A-compliant “separation from service.” Finally, neither the Bank nor Mr. Caudle shall accelerate the timing of any payment to be made under this Severance Agreement, and neither may
defer any payment to a future date, except as may be expressly permitted by regulations issued under IRS Code Section 409A. 

(Signature page follows) 
 I UNDERSTAND
AND AGREE THAT THIS SEVERANCE AGREEMENT CONSTITUTES A FULL AND FINAL RELEASE OF ALL CLAIMS, INCLUDING KNOWN AND UNKNOWN CLAIMS, WHICH I MIGHT HAVE AS OF THIS DATE. 
  

			
	/s/ Dallas G. Caudle
	Dallas G. Caudle, Jr.
	Date:	 	1-7-2019

 FRANKLIN SYNERGY BANK 
  

			
	By:	 	/s/ Jan Carlson
	Date:	 	3/13/19

  
 6Exhibit

Exhibit 10.4(a)

FIRST AMENDMENT TO
GUARDANT HEALTH, INC. 
2018 EMPLOYEE STOCK PURCHASE PLAN
 
This First Amendment (“First Amendment”) to the Guardant Health, Inc. 2018 Employee Stock Purchase Plan (the “Plan”), is adopted by the Compensation Committee of the Board of Directors (the “Committee”) of Guardant Health, Inc., a Delaware corporation (the “Company”), effective as of March 11, 2019. Capitalized terms used in this First Amendment and not otherwise defined shall have the same meanings assigned to them in the Plan. 

RECITALS

		
	A. 
	The Company currently maintains the Plan.

		
	B.
	Pursuant to Section 9.1 of the Plan, the Committee has the authority to amend the Plan at any time and from time to time. 

		
	C.
	The Committee believes it to be in the best interest of the Company and its stockholders to amend the Plan to revise the definition of “Compensation” in the Plan. 

AMENDMENT

1.    Section 2.8 of the Plan is hereby amended and restated in its entirety to read as follows:

“Compensation” of an Eligible Employee shall mean the gross cash compensation received by such Eligible Employee as compensation for services to the Company or any Designated Subsidiary, including prior week adjustment, overtime payments, commissions, periodic bonuses, jury duty and bereavement pay but excluding pay during a leave of absence, one-time bonuses (e.g., retention or sign on bonuses), education or tuition reimbursements, travel expenses, business and moving reimbursements, income received in connection with any stock options, stock appreciation rights, restricted stock, restricted stock units or other compensatory equity awards, fringe benefits, other special payments and all contributions made by the Company or any Designated Subsidiary for the Employee’s benefit under any employee benefit plan now or hereafter established.”

		
	2.
	This First Amendment shall be and hereby is incorporated in and forms a part of the Plan.  Except as expressly provided herein, all terms and conditions of the Plan shall remain in full force and effect.

IN WITNESS WHEREOF, the Committee has caused this First Amendment to be executed by a duly authorized officer of the Company as of the 11th day of March, 2019.

Guardant Health, Inc.                

By: /s/ Helmy Eltoukhy
Helmy Eltoukhy
Chief Executive Officer
                
Date: March 11, 2019

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