EX-10.4



 Exhibit 10.4 

EXECUTIVE EMPLOYMENT AGREEMENT 

(TIER II) 
 This Executive
Employment Agreement (this “Agreement”) is by and between Spirit of Texas Bancshares, Inc., a Texas corporation (the “Company”), and Jeffrey A. Powell, an individual (referred to herein as
“Executive” or “you”), and shall be effective as of July 10, 2017 (the “Effective Date”). 

Preliminary Statements 

Executive desires to be employed by the Company upon the terms and conditions stated herein, and the Company desires to employ Executive
provided that, in so doing, it can protect its confidential information, business, accounts, patronage and goodwill. 
 Executive and the
Company have specifically determined that the terms of this Agreement are fair and reasonable. 
 Agreement 

NOW, THEREFORE, in consideration of the mutual agreements and covenants contained in this Agreement, the Company and you agree as follows:

 1. EMPLOYMENT. On the terms and subject to the conditions in this Agreement, the Company hereby employs you and engages your
services to serve as Executive Vice President/Chief Financial Officer of the Company. You hereby accept employment with the Company according to the terms set forth in this Agreement. 

2. DUTIES. You are hereby employed and shall work at the location (or locations) of the Company as may be directed by the Chief
Executive Officer of the Company (the “Chief Executive Officer”) (subject to your rights under Section 6.4). You shall have the position (including status, offices and reporting requirements), authority,
duties and responsibilities usually associated with your position in a financial services company having assets similar in value and nature to the assets of the Company. Additionally, while employed by the Company, you shall: 

(i) perform the duties required of you hereunder and shall devote your best efforts and exclusive business time, energy and skill to
performing such duties; 
 (ii) report to, and your authority and responsibilities will be subject to the supervision of the Chief Executive
Officer; 
 (iii) not make any disparaging remarks regarding the Company to any person with whom the Company has business relations,
including any employee or vendor of the Company; 
 (iv) use the Confidential Information (as defined in
Section 9.1) and the Goodwill (as defined in Section 9.2) between the Company and its customers and vendors solely for the benefit of the Company; 









 (v) not interfere in such Goodwill, either during or following your employment with the
Company; 
 (vi) shall not take any action for the benefit of any competitor of the Company or any other Entity (as defined in
Section 9.4(ii)), other than the Company, engaged in business similar to that engaged in by the Company; and 

(vii) shall not recruit or otherwise facilitate the hiring of any Company employee by any Entity, other than the Company and its affiliates.

 3. COMPENSATION AND BENEFITS. Your compensation and other benefits shall include, in addition to any further benefits and
compensation as later approved by the Board, the following: 
 3.1. Base Salary. You will be paid an annual salary of
$240,000.00, subject to annual increases as determined by the Compensation Committee and/or the Chairman/CEO of the Company and approved by the Board of the Company. Your annual salary shall be payable in accordance with the Company’s
customary policies, subject to payroll and withholding deductions as may be required by law. In addition, you will receive a signing bonus of $10,000.00 to be paid immediately on the next regularly scheduled pay date after you start
employment and an additional $10,000.00 after the first six months of satisfactory employment. In the event that you leave the Company within 6 months of your date of hire, you will be responsible for reimbursing the Company on a pro-rata basis for any months not worked. 
 3.2. Annual Incentive Program. You shall participate
in an equitable manner with all other senior management employees in the annual discretionary incentive program approved by the Board or the Compensation Committee. No other compensation provided for in this Agreement shall be deemed a substitute
for your right to participate in such annual incentive program. 
 3.3. Long Term Incentive Program. You will be entitled to
participate in the Company’s long term discretionary incentive program as approved by the Board or the Compensation Committee. 
 3.4.
Expenses. You shall be reimbursed for any and all reasonable expenses incurred by you in the performance of your duties and services as specified in this Agreement or incurred by you on behalf of, or in furtherance of the business of, the
Company, including, but not limited to, business expenses incurred in connection with travel and entertainment, provided that you shall submit to the Company satisfactory supporting receipts and other information with respect to reimbursable costs
and expenses. 
 3.5. Other Benefits. During your term of employment, you shall be entitled to participate in any benefit plan or
arrangement that the Company or its subsidiaries now or hereafter maintains that relates to (i) pension, profit sharing or other retirement benefits, (ii) medical insurance or reimbursement of medical or dependent care expenses, or
(iii) other group benefits, including disability and other life insurance plans, in the same manner as other senior management employees of the Company. You may also be reimbursed for expenses incurred in connection with your club dues at a
club approved by the Board. In addition, you will be provided with (i) the use of an automobile and reimbursed for all costs and expenses related to operating the vehicle or (ii) an annual vehicle allowance in an amount up to $1000.00 per month
as approved by the Board or Compensation Committee. 

  
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 4. TERM. This Agreement shall have an initial term beginning on July 10, 2017,
and shall expire on the first anniversary of such date; provided, however, that the term shall be automatically extended for successive periods of one (1) year on a continuing basis unless either you or the Company shall give written notice of
intention not to so extend at least ninety (90) days prior to the end of the initial one (1) year period or any renewal period (the “Term”). 

5. CHANGE IN CONTROL. For purposes of this Agreement, “Change in Control” of the Company means the occurrence of any
of the following events: (i) any merger, consolidation or other reorganization whereby the Company’s equity holders existing immediately prior to such merger, consolidation or reorganization do not, immediately after consummation of such
merger, consolidation or reorganization, beneficially own (within the meaning of Rule 13d-3 promulgated under the Securities Exchange Act of 1934 (as amended, the “Exchange Act”)) more than
50% of the combined voting power of the surviving entity’s then outstanding voting securities; (ii) the Bank is merged or consolidated into, or otherwise acquired by, an entity other than a wholly-owned subsidiary of the Company;
(iii) the Company sells, leases or exchanges all or substantially all of its assets to any other person or entity in which the Company, any subsidiary of the Company, or the Company’s equity holders existing immediately prior to such sale,
lease or exchange beneficially own less than 50% of the combined voting power of such acquiring entity’s then outstanding voting securities; (iv) the Company is dissolved and liquidated; (v) any person or entity, including a
“group” as contemplated by Section 13(d)(3) of the Exchange Act, acquires or gains beneficial ownership of more than 50% of the combined voting power of the Company’s then outstanding voting securities; or (vi) any change in
the identity of directors constituting a majority of the Board within a twenty-four month period unless the change was approved by a majority of the Incumbent Directors, where “Incumbent Director” means a member of the Board at the
beginning of the period in question, including any director who was not a member of the Board at the beginning of such period but was elected or nominated to the Board by, or on the recommendation of or with the approval of, at least two-thirds of the directors who then qualified as Incumbent Directors. 
 6. TERMINATION OF
EMPLOYMENT. 
 6.1. Death. Your employment under this Agreement shall terminate upon your death during the term of this
Agreement. 
 6.2. Disability. If, as a result of your incapacity due to physical or mental illness, you (i) are unable to
engage in any substantial gainful activity by reason of any medically determinable physical or mental impairment which can be expected to result in death or can be expected to last for a continuous period of not less than twelve (12) months, or
(ii) are, by reason of any medically determinable physical or mental impairment which can be expected to result in death or can be expected to last for a continuous period of not less than twelve (12) months, receiving income replacement
benefits for a period of not less than three (3) months under a disability plan of the Company, and within thirty (30) days after written notice of termination is given you shall not have returned to the performance of your essential
duties, with or without an accommodation, the Company may terminate your employment for “Disability.” 

  
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 6.3. Cause. The Company may terminate your employment for Cause as provided below.
Termination of your employment by the Company for “Cause” shall mean termination upon (A) your breach of this Agreement, (B) your failure to satisfactorily perform your duties under this Agreement, to follow the direction
(consistent with your duties) of the Board or any other individual to whom you report, or to follow the procedures, policies and rules of the Company, (C) any willful act or omission by you that is, or is likely to be, injurious to the Company
or the business reputation of the Company, (D) your dishonesty, fraud, malfeasance, negligence or misconduct, including the delay of information delivered to the Board or any other individual to whom you report, the incompleteness of reporting
to the Board or any other individual to whom you report, or any effort to mislead or improperly influence the Board or any other individual to whom you report, (E) your arrest, indictment for, or conviction of, or your entry of a plea of guilty
or no contest to, a felony or a crime involving moral turpitude, or (F) your resignation or failure to perform services under this Agreement. For a termination of employment to constitute “Cause” under
Section 6.3(A) through (D), the Company must provide you with written notice of the event or condition constituting Cause, and you shall have the right to cure the event or condition, if curable, within thirty
(30) days of receipt of the notice. 
 6.4. Good Reason. You may terminate your employment for Good Reason as provided below.
“Good Reason” for you to terminate your employment shall exist if, at any time during the term of this Agreement, any of the following events shall occur: 

(i) Any material diminution in your authority, duties or responsibilities; 

(ii) A change in your business location of more than thirty (30) miles; 

(iii) A diminution by the Company in your (a) base salary; or (b) prior to and in connection with a Change in Control or within two
years after a Change in Control, a reduction in the target annual bonus amount under any annual incentive plan in a manner inconsistent with other senior management employees; or 

(iv) Any action or inaction that constitutes a material breach of this Agreement by the Company, including but not limited to as provided in
Section 14(i). 
 For a termination of employment to constitute “Good Reason”, you must provide the
Company with notice of the event or condition constituting Good Reason within ninety (90) days of the occurrence of the event or condition, and the Company shall have the right to cure the event or condition with thirty (30) days of the
receipt of such notice. 
 6.5. Voluntary Resignation. You may voluntarily resign from employment for other than Good Reason by
giving the Company thirty days prior written notice. 
 6.6. Termination for Reason Other Than Cause. The Company may terminate your
employment for any reason other than Cause by giving thirty days written notice to you. 

  
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 6.7. Notice of Termination. Any termination by the Company or by you pursuant to
Sections 6.1 through 6.6 above shall be communicated by written Notice of Termination to the other party hereto. For purposes of this Agreement, a “Notice of Termination” shall mean a notice specifying the termination
provision in this Agreement relied upon and, for purposes of Sections 6.1 through 6.6 above, setting forth in reasonable detail the facts and circumstances claimed to provide a basis for termination of your employment under the provision so
specified. 
 6.8. Date of Termination. “Date of Termination” shall mean (A) if your employment is terminated
for Disability, thirty (30) days after Notice of Termination is given (provided that you shall not have returned to the performance of your duties on a full-time basis during such thirty (30) day period); (B) if you terminate your
employment pursuant to Section 6.4 above, the date specified in the Notice of Termination; (C) if your employment is terminated for death, the date of your death; and (D) if your employment is terminated for any
other reason, the date on which Notice of Termination is given. 
 7. RIGHTS AND OBLIGATIONS DURING DISABILITY. During any period
that you fail to perform your duties hereunder as a result of incapacity due to physical or mental illness, you shall continue to receive your full base salary at the rate then in effect, and any time of service for vesting purposes under any plan
shall continue to accrue during such period of incapacity until and if your employment is terminated pursuant to Section 6.2 hereof (and for any longer period as may be provided under applicable plans). 

8. RIGHTS AND OBLIGATIONS UPON TERMINATION. 

8.1. Termination Related to Death or Disability. If your employment is terminated pursuant to Sections 6.1 or 6.2, the Company
shall pay you, or shall cause to be paid to you, your full Base Salary and accrued vacation pay through the Date of Termination at the rate in effect at the time Notice of Termination is given, plus any benefits or awards (including both the cash
and stock components) which pursuant to the terms of any plans have been earned or become payable, but which have not yet been paid to you, and the Company shall have no further obligations to you under this Agreement. In addition, if your
employment is terminated pursuant to Sections 6.1 or 6.2, the Company will have the option, but not the obligation, to pay you a pro rata portion of the target annual incentive bonus for the period in which the termination occurred (pro rata
based on the number of days during such period up to the Date of Termination to the total number of days in such period). 
 8.2.
Termination Related to Cause or Voluntary Termination. If your employment is terminated pursuant to Section 6.3, or you resign voluntarily pursuant to Section 6.5, the Company shall pay you,
or shall cause to be paid to you, your full Base Salary and accrued vacation pay through the Date of Termination at the rate in effect at the time Notice of Termination is given, plus any benefits or awards (including both the cash and stock
components) which pursuant to the terms of any plans have been earned or become payable, but which have not yet been paid to you, and the Company shall have no further obligations to you under this Agreement. 

  
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 8.3. Termination for Reasons Other Than Cause or by Executive for Good Reason not in
connection with a Change in Control. If your employment is terminated (x) by the Company for reasons other than death, Disability or Cause pursuant to Section 6.6 or (y) by Executive for Good Reason pursuant
to Section 6.4, not in connection with a Change in Control or not within two years after the occurrence of a Change in Control, then the Company shall pay you or cause to be paid to you the following: 

(i) Your full Base Salary through the Date of Termination at the rate in effect just prior thereto (not taking into account any reduction in
your base salary that constitutes Good Reason for your termination), plus any earned vacation time, plus any benefits or awards (including both the cash and stock components) which pursuant to the terms of any plans have been earned or become
payable, but which have not yet been paid to you, to be paid within six days of the Date of Termination, plus 
 (ii) an amount equal to
your Base Salary for the calendar year in which the Date of Termination occurs, to be paid within thirty (30) days following the Date of Termination or, if the Company elects, such amount to be paid in twelve equal installments during the
twelve-month period following the Date of Termination, plus 
 (iii) benefits equal in value to each life, health, accident, or disability
benefit to which you were entitled (through insurance, direct reimbursement, or otherwise) immediately before the Date of Termination. The value of the foregoing benefits shall be determined individually rather than in the aggregate, and shall be
compared after subtracting applicable income and employment taxes. The Company shall provide the benefits described in this subsection for a period of one year after the Date of Termination. 

8.4. Termination by the Company for Reason Other Than Death, Disability or Cause or by Executive for Good Reason in connection with a
Change in Control. If (a) prior to and in connection with a Change in Control or (b) within two years after the occurrence of a Change in Control, (i) the Company terminates your employment for a reason other than for death,
Disability or Cause pursuant to Section 6.6 hereof, or (ii) if you terminate your employment for Good Reason as provided for in Section 6.4, then the Company shall pay you or cause to be paid
to you the following: 
 (i) Your full Base Salary through the Date of Termination at the rate in effect just prior thereto (not taking into
account any reduction in your base salary that constitutes Good Reason for your termination), plus any earned vacation time, plus any benefits or awards (including both the cash and stock components) which pursuant to the terms of any plans have
been earned or become payable, but which have not yet been paid to you, to be paid within six days of the Date of Termination, plus 
 (ii)
An amount equal to the aggregate of (y) your Base Salary for the calendar year in which the Date of Termination occurs and (z) all bonus, profit sharing, and other annual incentive payments made by the Company to you with respect to the
most recent full year preceding the year in which the Date of Termination occurs, to be paid within thirty (30) days following the Date of Termination; plus 

  
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 (iii) Benefits equal in value to each life, health, accident, or disability benefit to which you
were entitled (through insurance, direct reimbursement, or otherwise) immediately before the Date of Termination (not taking into account any reduction in such benefit that constitutes Good Reason for your termination). The value of the foregoing
benefits shall be determined individually rather than in the aggregate, and shall be compared after subtracting applicable income and employment taxes. The Company shall provide the benefits described in this subsection for a period terminating one
year after the Date of Termination. An election by you to terminate for Good Reason shall not be deemed a voluntary termination of employment by you for purposes of this Agreement or of any plan or practice of the Company. At the end of the period
of coverage, you shall have the option to have assigned to you, at no cost and with no apportionment of prepaid premiums, any assignable insurance policy owned by the Company or relating specifically to you. 

8.5. Release. As a condition to receiving the severance payments provided in Section 8.3 or 8.4, Executive
must (a) execute a full release and waiver of all claims against the Company and its affiliates in a form reasonably satisfactory to the Company (excluding claims for amounts required under this Agreement to be paid as severance and existing
indemnification obligations to Executive) and (b) comply with the terms of Section 9 hereof. 
 8.6. Base
Salary Defined. For purposes of this Agreement, the term “Base Salary” shall include any amounts deducted pursuant to Sections 125 and 401(k) of the Internal Revenue Code of 1986, as amended (the “Code”).
Amounts paid pursuant to this Section 8 shall be deemed severance pay and in lieu of any further salary for periods subsequent to the Date of Termination. 

8.7. Parachute Payment. Notwithstanding anything in this Section 8 to the contrary, if you are a
“Disqualified Individual” (as defined in Section 280G(c) of the Code) and the payment provided for in this Section 8, together with any other payments which you have the right to receive from the
Company (including without limitation the payments under Section 8.4 and the acceleration of vesting of equity awards under Company equity incentive plans) would constitute a “Parachute Payment” (as defined
in Section 280G(b)(2) of the Code), the total amounts received by you from the Company which constitute Parachute Payments shall be reduced to be one dollar ($1.00) less than three (3) times your base amount (as defined in
Section 280G of the Code) so that no portion of such amounts received by you shall be subject to the excise tax imposed by Section 4999 of the Code if and only if (i) such reduction in the amount paid produces a better net after tax
position (taking into account any applicable excise tax under Section 4999 of the Code and any applicable income tax) than the total payment provided for herein and (ii) there are no other amounts receivable by you from the Company which,
by their terms, may not be reduced such that no portion of such amounts received by you shall be subject to the excise tax under Section 4999 of the Code. 

8.8. Tax Issues. To the extent that the payment provided for herein results in compensation income to you for federal or state income
tax purposes, you shall pay to the Company at the time of such event such amount of money as the Company may require to meet its withholding obligation under applicable tax laws or regulations, if any, and, if you fail to do so, the Company is
authorized to withhold from any cash remuneration then or thereafter payable to you, any tax required to be withheld by reason of such resulting compensation income. If you make the election authorized by Section 83(b) of the Code, you shall
submit to the Company a copy of the statement filed to make such election. 

  
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 9. PROMISES AND COVENANTS REGARDING CONFIDENTIAL INFORMATION AND GOODWILL; POST-EMPLOYMENT
RESTRICTIONS. In consideration of your promises and covenants contained in this Agreement, including your promise and covenant not to disclose Confidential Information set forth in Section 9.3, and in connection with
your continued employment with the Company, the Company will provide you with Confidential Information necessary for you to execute your duties hereunder. In further consideration of your promises and covenants contained in this Agreement, including
your promise and covenant to utilize the Goodwill exclusively for the benefit of the Company set forth in Section 2, and in connection with the Company’s continued employment of you, the Company will provide to you and
allow you to utilize the Confidential Information and Goodwill in the performance of your duties hereunder. 
 9.1. Confidential
Information Defined. You acknowledge that the Company’s business is highly competitive; that the Company has and will give you immediate access to Confidential Information of the Company that is a valuable, special, and unique asset used by
the Company in its business; and that protection of such Confidential Information against unauthorized disclosure and use is of critical importance to the Company. “Confidential Information” of the Company (or any affiliate) means
and includes confidential and/or proprietary information and/or trade secrets of the Company and its affiliates and subsidiaries that have been and/or will be developed or used and that cannot be obtained readily by third parties from outside
sources. Confidential Information includes, but is not limited to, the following: information regarding customers, employees, contractors and the industry not generally known to the public: strategies, methods, books, records and documents;
technical information concerning products, equipment, services and processes; procurement procedures, pricing and pricing techniques; information concerning past, current and prospective customers, investors and business affiliates (such as contact
name, service provided, pricing, type and amount of services used, financial data and/or other such information); pricing strategies and price curves; positions; plans or strategies for expansion or acquisitions; budgets; research; financial and
sales data; trading methodologies and terms; communications information; evaluations, opinions and interpretations of information and data; marketing and merchandising techniques; electronic databases; models; specifications; computer programs;
contracts; bids or proposals; technologies and methods; training methods and processes; organizational structure; personnel information; payments or rates paid to consultants or other service providers; and other such confidential or proprietary
information. 
 9.2. Goodwill Defined. “Goodwill” means the value of the relationships between the Company and its
customers, vendors and employees. 
 9.3. Non-Disclosure Obligations. The parties acknowledge
that the Company is the sole and exclusive owner of the Confidential Information, and that the Company has legitimate business interests in protecting Confidential Information. The parties further acknowledge that the Company has invested, and
continues to invest, considerable amounts of time and money in obtaining, developing, and preserving the confidentiality of Confidential Information and that, by reason of the trust relationship arising between you and the Company, you owe the
Company a fiduciary duty to preserve and protect Confidential Information from all unauthorized disclosure and unauthorized use. You shall not, directly or indirectly, disclose Confidential Information to any third party or use Confidential
Information for any purpose other than for the direct benefit of 

  
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the Company while in the Company’s employ and thereafter. You also agree that you shall deliver promptly to the Company at the termination of employment or at any other time at the
Company’s request, without retaining any copies, all documents and other material in your possession relating, directly or indirectly, to any Confidential Information or other information of the Company, or Confidential Information or other
information regarding third parties learned as an employee of the Company. 
 9.4.
Non-Competition and Non-Solicitation Obligations. In order to protect the Confidential Information and Goodwill and in order to enforce your agreement not to
disclose Confidential Information, the Company and you agree that, during the term of your employment with the Company and for twelve (12) months after the termination of your employment with the Company pursuant to Sections 6.2, 6.3, 6.4,
6.5 or 6.6, you will not, except in your capacity as an employee of the Company, in any capacity for you or others, directly or indirectly: 

(i) compete or engage, anywhere in the geographic area comprised of Brazos, Dallas, Harris, Montgomery, Fort Bend and Tarrant Counties in
Texas, and any additional county in which the Company has established a branch office (the “Market Area”), in a financial services business similar to that of the Company; 

(ii) take any action to invest in, own, manage, operate, control, participate in, be employed or engaged by or be connected in any manner with
any partnership, association, corporation, limited liability company, trust, unincorporated organization or any other business entity (an “Entity”) engaging in a financial or depository institution, financial planning or investment
advisory business similar to that of the Company anywhere within the Market Area; except that you are permitted to own, directly or indirectly, up to two percent (2%) of the issued and outstanding securities of any publicly traded financial
institution conducting business in the Market Area; 
 (iii) Within the Market Area (i) enter into, or facilitate any other Entity to
enter into, an agreement with any customer of the Company to provide goods and services of the same or similar type as the Company provides, (ii) accept business from, or facilitate any other Entity to gain or accept such business from or with
any customer of the Company, (iii) assist a competitor of the Company in the sale to any customer of the Company of business of the same or similar type as the Company provides, or (iv) encourage or facilitate any customer of the Company
to purchase goods and services of the same or similar type as the Company provides from a competitor of the Company. 
 (iv) Within the
geographic Market Area, call on, service or solicit competing business from any customers of the Company if, within the twelve (12) months before your termination, you had or made contact with the customer, or had access to information and
files about the customer; or 
 (v) call on, solicit or induce any employee of the Company whom you had contact, knowledge of, or
association with in the course of employment with the Company to terminate employment from the Company, and will not assist any other person or entity in such activities. 

  
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 9.5. Permissible Business Interests. Your involvement in the business interests listed in
Exhibit A to this Agreement shall not be deemed to compete with the interests of the Company. 
 9.6. Injunctive Relief. You
and the Company acknowledge and agree that breach of any of the covenants made by you in this Section 9 would cause irreparable injury to the Company, which could not sufficiently be remedied by monetary damages; and,
therefore, that the Company shall be entitled to obtain such equitable relief as declaratory judgments; temporary, preliminary and permanent injunctions; and order of specific performance to enforce those covenants or to prohibit any act or omission
that constitutes a breach thereof or any other equitable remedies. If a party must bring suit to enforce this Agreement or to defend any such action, the prevailing party shall be entitled to recover its attorneys’ fees and costs related
thereto. 
 9.7. Tolling. In the event that the Company shall file a lawsuit in any court of competent jurisdiction alleging a breach
of any of the obligations under this Section of this Agreement, any time period you are in breach of this Agreement shall be deemed tolled as of the time such lawsuit is filed, and shall remain tolled until such dispute finally is resolved. 

10. ACKNOWLEDGEMENTS REGARDING OTHER PROMISES AND COVENANTS. With regard to the promises and covenants set forth herein, you
acknowledge and agree that: 
 (i) the restrictions are ancillary to an otherwise enforceable agreement including the provisions of this
Agreement regarding the disclosure, ownership and use of the Confidential Information and Goodwill; 
 (ii) the limitations as to time,
geographical area, and scope of activity to be restricted are reasonable and acceptable to you, and do not impose any greater restraint than is reasonably necessary to protect the Goodwill and other legitimate business interests of the Company; 

(iii) your performance, and the enforcement by the Company, of such promises and covenants will cause no undue hardship on you; and 

(iv) the time periods covered by the promises and covenants will not include any period(s) of violation of, or any period(s) of time required
for litigation brought by the Company to enforce any such promise or covenant. 
 11. DUTY TO GIVE NOTICE OF AGREEMENT. During
employment by the Company and the period of any post-employment obligation applicable hereunder, you shall provide written notice to any prospective employer of your obligations under this Agreement, and shall provide a true copy hereof to such
prospective employer at the outset of any communications about employment. 
 12. INDEPENDENT ELEMENTS. The parties
acknowledge that the promises and covenants contained in Sections 9 and 10 above are essential independent elements of this Agreement and that, but for Executive agreeing to comply with them, the Company would not employ Executive.
Accordingly, the existence or assertion of any claim by Executive against the 

  
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Company, whether based on this Agreement or otherwise, shall not operate as a defense to the Company’s enforcement of the promises and covenants in Sections 9 and 10. An alleged or
actual breach of the Agreement by the Company will not be a defense to enforcement of any such promise or covenant, or other obligations of Executive to the Company. The promises and covenants in Sections 9 and 10 will remain in full force
and effect whether Executive is terminated by the Company or voluntarily resigns. 
 13. INDEMNIFICATION. The Company’s Bylaws
provide for indemnification of directors and officers of the Company, including you, during the full term of this Agreement, and at all times to provide adequate insurance for such purposes. Further, you shall, to the extent permitted by law, be
indemnified from and against any and all cost or expense incurred by you as a result of being made a party or threatened to be made a party or involved in any way in any threatened, pending or contemplated action, suit or proceeding, whether civil,
criminal, administrative, arbitrative or investigative (herein a “Proceeding”), or any appeal related to such a Proceeding, or any inquiry or investigation that could lead to such a Proceeding by reason of the fact of your
relationship with the Company. You shall be indemnified to the full extent permitted by law, against any and all costs, expenses, judgments, penalties (including excise and similar taxes and punitive damages, fines, settlements and reasonable
expenses (including without limitation, attorneys’ fees)) incurred (or reasonably anticipated to be incurred) by you in connection with such Proceeding. Notwithstanding the above, the Company shall not be obligated to indemnify you in
connection with any Proceeding or claim initiated by you against the Company or its subsidiaries, officers, directors or employees. 
 14.
SUCCESSOR’S BINDING AGREEMENT. 
 (i) The Company will cause any entity that becomes a Successor (as hereinafter defined) to
expressly assume the Company’s obligations under this Agreement and acknowledge that the Successor is contractually bound to perform all of such obligations. Failure of such entity to furnish such assumption and acknowledgement by the time such
entity becomes a Successor shall constitute Good Reason for termination by you of your employment if a Change in Control of the Company occurs or has occurred. For purposes of this Agreement, “Successor” shall mean any entity that
succeeds to, or has the practical ability to control (either immediately or with the passage of time), the Company’s business directly, by merger or consolidation, or indirectly, by purchase of the Company’s voting securities or otherwise.

 (ii) This Agreement shall inure to the benefit of and be enforceable by your personal or legal representatives, executors,
administrators, successors, heirs, distributees, devisees and legatees. If you should die before all amounts that would still be payable to you hereunder if you had continued to live are paid, all such unpaid amounts, unless otherwise provided
herein, shall he paid in accordance with the terms of this Agreement to your devisee, legatee, or other designee or, if there be no such designee, to your estate. 

  
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 15. TAXES. All payments to be made to you under this Agreement will be subject to required
withholding of applicable federal, state and local taxes. 
 16. SECTION 409A. 

16.1. Purpose. This section is intended to help ensure that compensation paid or delivered to you pursuant to this Agreement
either is paid in compliance with, or is exempt from, Section 409A of the Code and the rules and regulations promulgated thereunder (collectively, “Section 409A”). However, the Company does not warrant that
all compensation paid or delivered to you will be exempt from, or paid in compliance with, Section 409A. 
 16.2.
Interpretation. Notwithstanding anything herein to the contrary, this Agreement is intended to be interpreted and applied so that the payments and benefits set forth herein shall either be exempt from the requirements of Section 409A, or
shall comply with the requirements of Section 409A, and, accordingly, to the maximum extent permitted, this Agreement shall be interpreted to be exempt from or in compliance with Section 409A. For purposes of the application of Treas. Reg.
§ 1.409A-1(b)(4) (or any successor provision), each payment under this Agreement (including any installment payments) shall be deemed a separate payment. 

16.3. Amounts Payable On Account of Termination. For the purposes of determining when amounts otherwise payable on account of your
termination of employment under this Agreement will be paid, which amounts become due because of your termination of employment, “termination of employment” or words of similar import, as used in this Agreement, shall be construed as the
date that you first incur a “separation from service” for purposes of Section 409A on or following termination of employment. Notwithstanding any provision in this Agreement or elsewhere to the contrary, if on your Date of Termination
you are deemed to be a “specified employee” within the meaning of Section 409A, any payments or benefits due upon a termination of your employment under any arrangement that constitutes a “deferral of compensation” within
the meaning of Section 409A (whether under this Agreement, any other plan, program, payroll practice or any equity grant) and which do not otherwise qualify under the exemptions under Treas. Reg. §
1.409A-1 (including, without limitation, the short-term deferral exemption and the permitted payments under Treas. Reg. § 1.409A-1(b)(9)(iii)(A)), shall be delayed
and paid or provided to you in a lump sum (whether they would have otherwise been payable in a single sum or in installments in the absence of such delay) on the earlier of (i) the date which is six months and one day after your
“separation from service” (as such term is defined in Section 409A of the Code) for any reason other than death, and (ii) the date of your death, and any remaining payments and benefits shall be paid or provided in accordance
with the normal payment dates specified for such payment or benefit. 
 16.4. Reimbursements. With respect to any expense,
reimbursement or in-kind benefit provided pursuant to this Agreement that constitutes a “deferral of compensation” within the meaning of Section 409A, (i) the expenses eligible for
reimbursement or in-kind benefits provided to you must be incurred during the Term (or applicable survival period), (ii) the amount of expenses eligible for reimbursement or
in-kind benefits provided to you during any calendar year will not affect the amount of expenses eligible for reimbursement or in-kind benefits provided to you in any
other calendar year, (iii) the reimbursements for expenses for which you are entitled to be reimbursed shall be made on or before the last day of the calendar year following the calendar year in which the applicable expense is incurred, and
(iv) the right to payment or reimbursement or in-kind benefits hereunder may not be liquidated or exchanged for any other benefit. 

  
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 17. SURVIVAL. Any termination of this Agreement and Executive’s employment shall not
release either the Company or Executive from their respective obligations to the date of termination nor from the provisions of this Agreement that, by necessary or reasonable implication, are intended to apply after such termination, including
without limitation the provisions of Section 9. Furthermore, neither the termination of this Agreement nor the termination of Executive’s employment hereunder shall affect, limit or modify in any manner the existence
or enforceability of any other written agreement between Executive and the Company, even if such other agreements provide employment-related benefits to Executive. 

18. NOTICES. Notices and all other communications provided for herein shall be in writing and shall be deemed to have been duly given
when delivered or mailed by certified or registered mail, return receipt requested, postage prepaid addressed to the respective addresses set forth on the signature page of this Agreement or to such other address as either party may have furnished
to the other in writing in accordance herewith, except that notices of change of address shall be effective only upon receipt. All notices to the Company shall be directed to the attention of the Chief Executive Officer of the Company with a copy to
the Corporate Secretary of the Company. 
 19. MISCELLANEOUS. No provision of this Agreement may be modified, waived or discharged
except in writing specifically referring to such provision and signed by you and such officer of the Company as may be specifically designated by the Board. No waiver at any time by either party hereto of the breach of any condition or provision of
this Agreement, or of compliance by the other party with the same, shall be deemed a waiver of any other condition or provision at the same or at any other time. No party hereto shall by any act (except by written instrument pursuant to this
Section), delay, indulgence, omission or otherwise be deemed to have waived any right, power, privilege or remedy hereunder or to have acquiesced in any default in or breach of any of the terms and conditions hereof. No failure to exercise, nor any
delay in exercising, on the part of any party hereto, any right, power, privilege or remedy hereunder shall operate as a waiver thereof. No single or partial exercise of any right, power, privilege or remedy hereunder shall preclude any other or
further exercise thereof or the exercise of any other right, power, privilege or remedy. No remedy set forth in this Agreement or otherwise conferred upon or reserved to any party shall be considered exclusive of any other remedy available to any
party, but the same shall be distinct, separate and cumulative and may be exercised from time to time as often as occasion may arise or as may be deemed expedient. No agreement or representation still in effect, oral or otherwise, express or
implied, with respect to the subject matter hereof has been made by either party other than (i) those set forth expressly in this Agreement or (ii) those in any equity award agreements. Upon termination of your employment, in the event of
any conflict between the terms of this Agreement and the terms of any other agreements between you and the Company, this Agreement shall be controlling. The validity, interpretation, construction and performance of this Agreement shall be governed
by the laws of the State of Texas, without regard to principles of conflicts of laws. Neither party to this Agreement may assign this Agreement or any or all of its rights or obligations hereunder without the prior written consent of the other party
hereto. 

  
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 20. VALIDITY. The invalidity or unenforceability of any provisions of this Agreement shall
not affect the validity or enforceability of any other provision of this Agreement, which shall remain in full force and effect. This Agreement and the agreements contemplated hereby or executed in connection herewith (i) constitute the entire
agreement of the parties hereto regarding the subject matter hereof, and (ii) supersede all prior employment agreements, both written and oral, among the parties hereto, or any of them. 

21. COUNTERPARTS. This Agreement may be executed in one or more counterparts, each of which shall be deemed to be an original but all
of which together will constitute one and the same instrument. 
 [Signature page follows] 

  
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 Dated to be effective as of the Effective Date. 

 

			
	COMPANY:
	
	Spirit of Texas Bancshares, Inc.
		
	By:	 	        /s/ Dean O. Bass
		 	Name: Dean O. Bass
		 	Title: Chairman/CEO
		 	Address:
		
		 	        /s/ Jeffrey A. Powell
		 	Jeffrey A. Powell
		 	Address:


 Signature Page 










 EXHIBIT A 

Permissible Business Interests 

Exhibit A