Document:

EX-10.6

 Exhibit 10.6 

ST FINANCIAL GROUP, INC. 

AMENDMENT TO 2008 STOCK PLAN 

On May 17, 2012, the shareholders of ST Financial Group, Inc. (the “Company”) at a duly called annual meeting of
shareholders approved an amendment to the ST Financial Group, Inc. 2008 Stock Plan (the “Plan”) to increase the number of shares of Company common stock available for issuance under the Plan from 1,078,938 shares to 1,828,938
shares. 
  

	
	
	/s/ Dean O. Bass
	Dean O. Bass, Chairman and CEOEX-10.7

 Exhibit 10.7 

ST FINANCIAL GROUP, INC. 

AMENDMENT TO 2008 STOCK PLAN 

On May 23, 2013, the shareholders of ST Financial Group, Inc. (the “Company”) at a duly called annual meeting of
shareholders approved an amendment to the ST Financial Group, Inc. 2008 Stock Plan (the “Plan”) to increase the number of shares of Company common stock available for issuance under the Plan from 1,828,938 to 2,600,000 shares. 

 

	
	
	/s/ Dean O. Bass
	Dean O. Bass, Chairman and CEOEX-10.8

 Exhibit 10.8 

ST FINANCIAL GROUP, INC. 

AMENDMENT TO 2008 STOCK PLAN 

On May 21, 2015, the shareholders of ST Financial Group, Inc. (the “Company”) at a duly called annual meeting of
shareholders approved an amendment to the ST Financial Group, Inc. 2008 Stock Plan (the “Plan”) to increase the number of shares of Company common stock available for issuance under the Plan from 2,600,000 to 3,500,000 shares. 

 

	
	
	/s/ Dean O. Bass
	Dean O. Bass, Chairman and CEOEX-10.9

 Exhibit 10.9 

SECOND AMENDMENT TO THE 

ST FINANCIAL GROUP, INC. 2008 STOCK PLAN 

This Second Amendment (this “Second Amendment”) to the ST Financial Group, Inc. 2008 Stock Plan (as amended, the
“Plan”) is made by ST Financial Group, Inc., a Texas corporation (the “Company”), pursuant to the authorization of the Board of Directors of the Company (the “Board”). 

WHEREAS, the Board deems it to be in the Company’s best interest to amend the Plan to (1) provide that Shares covered by an
award of Shares or Options will be counted as used only to the extent actually issued under the Plan, (2) prohibit Option exercise arrangements to the extent such arrangements are prohibited by applicable law, (3) provide for a Plan
termination date, (4) provide for shareholder approval when required by applicable law or regulation and (5) provide for the prohibition on repricings of Options without shareholder approval; and 

WHEREAS, Section 11(b) of the Plan authorizes the Board to amend the Plan. 

NOW, THEREFORE, pursuant to the authority granted to the Board in Section 11(b) of the Plan, the Plan is hereby amended as
follows: 
 1. The first sentence of Section 4(b) of the Plan is hereby amended by deleting it in its entirety and replacing it with the
following: 
 “The Shares attributable to the nonvested, unpaid, unexercised, unconverted or otherwise unsettled portion of any award of
Shares or Options that is forfeited or cancelled or expires or terminates for any reason without becoming vested, paid, exercised, converted or otherwise settled in full will again be available for purposes of the Plan. Shares withheld as full or
partial payment to the Company for the purchase or exercise price relating to an award of Shares or Options, or to satisfy tax withholding obligations, shall again be available for grant under the Plan.” 

2. The first sentence of Section 6(k) of the Plan is hereby amended by deleting it in its entirety and replacing it with the following:

 “After the date of grant of an award of Shares or Options, the Board of Directors may, in its sole discretion, modify the terms and
conditions of an award, except to the extent that such modification is prohibited under Section 11(b) or would be inconsistent with other provisions of the Plan.” 

3. Section 7 of the Plan is hereby amended by adding a new Section 7(g) following Section 7(f) therein: 

“(g) Exercise Prohibitions. Notwithstanding the foregoing, no such loans, notes, or other exercise arrangements described above
will be permitted to the extent such arrangement is prohibited by applicable law, including but not limited to Section 13(k) of the Securities Exchange Act of 1934.” 

 4. The third sentence of Section 11(a) of the Plan is hereby amended by deleting it in
its entirety and replacing it with the following: 
 “The Plan shall terminate automatically on May 21, 2025, which is 10 years
after the most recent increase in the number of Shares reserved under Section 4 that was approved by the Company’s stockholders.” 

5. The first sentence of Section 11(b) is hereby amended by adding the following after the reference to “ISOs” in subsection
(ii) thereof: 
 “or (iii) is required under applicable law or regulation” 

6. Section 11(b) of the Plan is hereby amended by adding the following sentence at the end of such Section 11(b): 

“Except in connection with a corporate transaction involving the Company (including, without limitation, any stock dividend, stock split,
subdivision, extraordinary cash dividend, recapitalization, reclassification, reorganization, merger, consolidation, split-up, spin-off, combination, or exchange of
shares or other transaction referred to in Section 8 hereof), the terms of outstanding awards of Options may not be amended to reduce the exercise price of outstanding Options or cancel outstanding Options in exchange for cash, other awards of
Shares of Options, or Options with an exercise price that is less than the exercise price of the original Options without stockholder approval.” 

Except as provided above, the Plan shall remain unchanged and in full force and effect. 

IN WITNESS WHEREOF, the Company, by its duly authorized officer, has executed this Second Amendment on this 19th day of January,
2017. 
  

			
	 ST FINANCIAL GROUP, INC.

		
	 By:
	 	 /s/ Dean O. Bass

	 Name: Dean O. Bass

	 Title: Chairman and Chief Executive Officer

  
 2EX-10.10

 Exhibit 10.10 

ST FINANCIAL GROUP, INC. 2008 STOCK PLAN 

NOTICE OF STOCK OPTION GRANT 

You have been granted the following option to purchase shares of the Common Stock of ST Financial Group, Inc. (the
“Company”): 
  

			
		
	Name of Optionee:	  	
		
	Total Number of Shares:	  	
		
	Type of Option: ISO	  	Incentive Stock Option (ISO)
		
	Exercise Price Per Share:	  	$8.00
		
	Date of Grant:	  	
		
	Date Exercisable:	  	This option may be exercised at any time after the Date of Grant for all or any part of the Shares subject to this option.
		
	Vesting Commencement Date:	  	
		
	Vesting Schedule:	  	The options will vest at 20% per year for a five year period subject when the Optionee completes twelve months continuous service after the Vesting Commencement Date.
		
	Expiration Date:	  	This option expires earlier if the Optionee’s Service terminates earlier, as provided in Section 6 of the Stock Option Agreement.

 By your signature and the signature of the Company’s representative below, you and the Company agree that this option is
granted under and governed by the terms and conditions of the 2008 Stock Plan and the Stock Option Agreement, both of which are attached to and made a part of this document. 
  

									
	OPTIONEE:	 		 	ST FINANCIAL GROUP, INC.
			
	                                    
                                 	 		 	By:                                   
                                         
   
			
		 		 	Title:                                   
                                         

			
	Date:                                   
                         	 		 	Date:                                   
                                         

 THE OPTION GRANTED PURSUANT TO THIS AGREEMENT AND THE SHARES ISSUABLE UPON THE EXERCISE THEREOF HAVE NOT BEEN
REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED, AND MAY NOT BE SOLD, PLEDGED, OR OTHERWISE TRANSFERRED WITHOUT AN EFFECTIVE REGISTRATION THEREOF UNDER SUCH ACT OR AN OPINION OF COUNSEL, SATISFACTORY TO THE COMPANY AND ITS COUNSEL, THAT SUCH
REGISTRATION IS NOT REQUIRED. 
 ST FINANCIAL GROUP, INC. 2008 STOCK
PLAN: 
 STOCK OPTION AGREEMENT 

SECTION 1. GRANT OF OPTION. 
 (a)
Option. On the terms and conditions set forth in the Notice of Stock Option Grant and this Agreement, the Company grants to the Optionee on the Date of Grant the option to purchase at the Exercise Price the number of Shares set forth
in the Notice of Stock Option Grant. The Exercise Price is agreed to be at least 100% of the Fair Market Value per Share on the Date of Grant (110% of Fair Market Value if this option is designated as an ISO in the Notice of Stock Option Grant and
Section 3(b) of the Plan applies). This option is intended to be an ISO or an NSO, as provided in the Notice of Stock Option Grant. 

(b) $100,000 Limitation. Even if this option is designated as an ISO in the Notice of Stock Option Grant, it shall be deemed to be an
NSO to the extent (and only to the extent) required by the $100,000 annual limitation under Section 422(d) of the Code. 
 (c) Stock
Plan and Defined Terms. This option is granted pursuant to the Plan, a copy of which the Optionee acknowledges having received. The provisions of the Plan are incorporated into this Agreement by this reference. Capitalized terms are defined in
Section 14 of this Agreement. 
 SECTION 2. RIGHT TO EXERCISE. 

(a) Exercisability. Subject to Subsection (b) below and the other conditions set forth in this Agreement, all or part of this
option may be exercised prior to its expiration at the time or times set forth in the Notice of Stock Option Grant. Shares purchased by exercising this option may be subject to the Right of Repurchase under Section 7. 

(b) Stockholder Approval. Any other provision of this Agreement notwithstanding, no portion of this option shall be exercisable at any
time prior to the approval of the Plan by the Company’s stockholders. 

 SECTION 3. NO TRANSFER OR ASSIGNMENT OF OPTION. 

Except as otherwise provided in this Agreement, this option and the rights and privileges conferred hereby shall not be sold, pledged or
otherwise transferred (whether by operation of law or otherwise) and shall not be subject to sale under execution, attachment, levy or similar process. 

SECTION 4. EXERCISE PROCEDURES. 
 (a)
Notice of Exercise. The Optionee or the Optionee’s representative may exercise this option by giving written notice to the Company pursuant to Section 14(c). The notice shall specify the election to exercise this option, the number
of Shares for which it is being exercised and the form of payment. The person exercising this option shall sign the notice. In the event that this option is being exercised by the representative of the Optionee, the notice shall be accompanied by
proof (satisfactory to the Company) of the representative’s right to exercise this option. The Optionee or the Optionee’s representative shall deliver to the Company, at the time of giving the notice, payment in a form permissible under
Section 5 for the full amount of the Purchase Price. 
 (b) Issuance of Shares. After receiving a proper notice of exercise, the
Company shall cause to be issued one or more certificates evidencing the Shares for which this option has been exercised. Such Shares shall be registered (i) in the name of the person exercising this option, (ii) in the names of such
person and his or her spouse as community property or as joint tenants with the right of survivorship or (iii) with the Company’s consent, in the name of a revocable trust. In the case of Restricted Shares, the Company shall cause such
certificates to be deposited in escrow under Section 7(c). In the case of other Shares, the Company shall cause such certificates to be delivered to or upon the order of the person exercising this option. 

(c) Withholding Taxes. In the event that the Company determines that it is required to withhold any tax as a result of the exercise of
this option, the Optionee, as a condition to the exercise of this option, shall make arrangements satisfactory to the Company to enable it to satisfy all withholding requirements. The Optionee shall also make arrangements satisfactory to the Company
to enable it to satisfy any withholding requirements that may arise in connection with the vesting or disposition of Shares purchased by exercising this option. 

SECTION 5. PAYMENT FOR STOCK. 
 (a)
Cash. All or part of the Purchase Price may be paid in cash or cash equivalents. 
 (b) Surrender of Stock. All or any part of
the Purchase Price may be paid by surrendering, or attesting to the ownership of, Shares that are already owned by the Optionee. Such Shares shall be surrendered to the Company in good form for transfer and shall be valued at their Fair Market Value
on the date when this option is exercised. The Optionee shall not surrender, or attest to the ownership of, Shares in payment of the Purchase Price if such action would cause the Company to recognize compensation expense (or additional compensation
expense) with respect to this option for financial reporting purposes. 

  
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 (c) Exercise/Sale. If Stock is publicly traded, all or part of the Purchase Price and any
withholding taxes may be paid by the delivery (on a form prescribed by the Company) of an irrevocable direction to a securities broker approved by the Company to sell Shares and to deliver all or part of the sales proceeds to the Company. 

(d) Exercise/Pledge. If Stock is publicly traded, all or part of the Purchase Price and any withholding taxes may be paid by the
delivery (on a form prescribed by the Company) of an irrevocable direction to pledge Shares to a securities broker or lender approved by the Company, as security for a loan, and to deliver all or part of the loan proceeds to the Company. 

SECTION 6. TERM AND EXPIRATION. 
 (a)
Basic Term. This option shall in any event expire on the expiration date set forth in the Notice of Stock Option Grant, which date is 10 years after the Date of Grant (five years after the Date of Grant if this option is designated as an ISO
in the Notice of Stock Option Grant and Section 3(b) of the Plan applies). 
 (b) Termination of Service (Except by Death). If
the Optionee’s Service terminates for any reason other than death, then this option shall expire on the earliest of the following occasions: 

(i) The expiration date determined pursuant to Subsection (a) above; 

(ii) The date three months after the termination of the Optionee’s Service for any reason other than Disability; or 

(iii) The date 12 months after the termination of the Optionee’s Service by reason of Disability. 

The Optionee may exercise all or part of this option at any time before its expiration under the preceding sentence, but only to the extent that this option
had become exercisable for vested Shares before the Optionee’s Service terminated. When the Optionee’s Service terminates, this option shall expire immediately with respect to the number of Shares for which this option is not yet
exercisable and with respect to any Restricted Shares. In the event that the Optionee dies after termination of Service but before the expiration of this option, all or part of this option may be exercised (prior to expiration) by the executors or
administrators of the Optionee’s estate or by any person who has acquired this option directly from the Optionee by beneficiary designation, bequest or inheritance, but only to the extent that this option had become exercisable for vested
Shares before the Optionee’s Service terminated. 
 (c) Death of the Optionee. If the Optionee dies while in Service, then this
option shall expire on the earlier of the following dates: 
 (i) The expiration date determined pursuant to
Subsection (a) above; or 

  
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 (ii) The date 12 months after the Optionee’s death. 

All or part of this option may be exercised at any time before its expiration under the preceding sentence by the executors or administrators of the
Optionee’s estate or by any person who has acquired this option directly from the Optionee by beneficiary designation, bequest or inheritance, but only to the extent that this option had become exercisable for vested Shares before the
Optionee’s death. When the Optionee dies, this option shall expire immediately with respect to the number of Shares for which this option is not yet exercisable and with respect to any Restricted Shares. 

(d) Leaves of Absence. For any purpose under this Agreement, Service shall be deemed to continue while the Optionee is on a bona
fide leave of absence, if such leave was approved by the Company in writing and if continued crediting of Service for such purpose is expressly required by the terms of such leave or by applicable law (as determined by the Company). 

(e) Notice Concerning ISO Treatment. Even if this option is designated as an ISO in the Notice of Stock Option Grant, it ceases to
qualify for favorable tax treatment as an ISO to the extent that it is exercised: 
 (i) More than three months after the
date when the Optionee ceases to be an Employee for any reason other than death or Disability; 
 (ii) More than 12 months
after the date when the Optionee ceases to be an Employee by reason of Disability; or 
 (iii) More than three months after
the date when the Optionee has been on a leave of absence for 90 days, unless the Optionee’s reemployment rights following such leave were guaranteed by statute or by contract. 

SECTION 7. RIGHT OF REPURCHASE. 
 (a)
Scope of Repurchase Right. Until they vest in accordance with the Notice of Stock Option Grant and Subsection (b) below, the Shares acquired under this Agreement shall be Restricted Shares and shall be subject to the Company’s Right
of Repurchase. The Company, however, may decline to exercise its Right of Repurchase or may exercise its Right of Repurchase only with respect to a portion of the Restricted Shares. The Company may exercise its Right of Repurchase only during the
Repurchase Period following the termination of the Optionee’s Service. The Right of Repurchase may be exercised automatically under Subsection (d) below. If the Right of Repurchase is exercised, the Company shall pay the Optionee an amount
equal to the Exercise Price for each of the Restricted Shares being repurchased. 
 (b) Lapse of Repurchase Right. The Right of
Repurchase shall lapse with respect to the Restricted Shares in accordance with the vesting schedule set forth in the Notice of Stock Option Grant. 

  
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 (c) Escrow. Upon issuance, the certificate(s) for Restricted Shares shall be deposited in
escrow with the Company to be held in accordance with the provisions of this Agreement. Any additional or exchanged securities or other property described in Subsection (f) below shall immediately be delivered to the Company to be held in
escrow. All ordinary cash dividends on Restricted Shares (or on other securities held in escrow) shall be paid directly to the Optionee and shall not be held in escrow. Restricted Shares, together with any other assets held in escrow under this
Agreement, shall be (i) surrendered to the Company for repurchase upon exercise of the Right of Repurchase or the Right of First Refusal or (ii) released to the Optionee upon his or her request to the extent that the Shares have ceased to
be Restricted Shares (but not more frequently than once every six months). In any event, all Shares that have ceased to be Restricted Shares, together with any other vested assets held in escrow under this Agreement, shall be released within
90 days after the earlier of (i) the termination of the Optionee’s Service or (ii) the lapse of the Right of First Refusal. 

(d) Exercise of Repurchase Right. The Company shall be deemed to have exercised its Right of Repurchase automatically for all
Restricted Shares as of the commencement of the Repurchase Period, unless the Company during the Repurchase Period notifies the holder of the Restricted Shares pursuant to Section 14(c) that it will not exercise its Right of Repurchase for some
or all of the Restricted Shares. During the Repurchase Period, the Company shall pay to the holder of the Restricted Shares the purchase price determined under Subsection (a) above for the Restricted Shares being repurchased. Payment shall be
made in cash or cash equivalents and/or by canceling indebtedness to the Company incurred by the Optionee in the purchase of the Restricted Shares. The certificate(s) representing the Restricted Shares being repurchased shall be delivered to the
Company properly endorsed for transfer. 
 (e) Termination of Rights as Stockholder. If the Right of Repurchase is exercised in
accordance with this Section 7 and the Company makes available the consideration for the Restricted Shares being repurchased, then the person from whom the Restricted Shares are repurchased shall no longer have any rights as a holder of the
Restricted Shares (other than the right to receive payment of such consideration). Such Restricted Shares shall be deemed to have been repurchased pursuant to this Section 7, whether or not the certificate(s) for such Restricted Shares have
been delivered to the Company or the consideration for such Restricted Shares has been accepted. 
 (f) Additional or Exchanged
Securities and Property. In the event of a merger or consolidation of the Company with or into another entity, any other corporate reorganization, a stock split, the declaration of a stock dividend, the declaration of an extraordinary dividend
payable in a form other than stock, a spin-off, an adjustment in conversion ratio, a recapitalization or a similar transaction affecting the Company’s outstanding securities, any securities or other
property (including cash or cash equivalents) that are by reason of such transaction exchanged for, or distributed with respect to, any Restricted Shares shall immediately be subject to the Right of Repurchase. Appropriate adjustments to reflect the
exchange or distribution of such securities or property shall be made to the number and/or class of the Restricted Shares. Appropriate adjustments shall also be made to the price per share to be paid upon the exercise of the Right of Repurchase,
provided that the aggregate purchase price payable for the Restricted Shares shall remain the same. In the event of a merger or consolidation of the Company with or into another entity or any other corporate reorganization, the Right of Repurchase
may be exercised by the Company’s successor. 

  
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 (g) Transfer of Restricted Shares. The Optionee shall not transfer, assign, encumber or
otherwise dispose of any Restricted Shares without the Company’s written consent, except as provided in the following sentence. The Optionee may transfer Restricted Shares to one or more members of the Optionee’s Immediate Family or to a
trust established by the Optionee for the benefit of the Optionee and/or one or more members of the Optionee’s Immediate Family, provided in either case that the Transferee agrees in writing on a form prescribed by the Company to be bound by
all provisions of this Agreement. If the Optionee transfers any Restricted Shares, then this Agreement shall apply to the Transferee to the same extent as to the Optionee. 

(h) Assignment of Repurchase Right. The Board of Directors may freely assign the Company’s Right of Repurchase, in whole or in
part. Any person who accepts an assignment of the Right of Repurchase from the Company shall assume all of the Company’s rights and obligations under this Section 7. 

SECTION 8. RIGHT OF FIRST REFUSAL. 
 (a)
Right of First Refusal. In the event that the Optionee proposes to sell, pledge or otherwise transfer to a third party any Shares acquired under this Agreement, or any interest in such Shares, the Company shall have the Right of First Refusal
with respect to all (and not less than all) of such Shares. If the Optionee desires to transfer Shares acquired under this Agreement, the Optionee shall give a written Transfer Notice to the Company describing fully the proposed transfer, including
the number of Shares proposed to be transferred, the proposed transfer price, the name and address of the proposed Transferee and proof satisfactory to the Company that the proposed sale or transfer will not violate any applicable federal or state
securities laws. The Transfer Notice shall be signed both by the Optionee and by the proposed Transferee and must constitute a binding commitment of both parties to the transfer of the Shares. The Company shall have the right to purchase all, and
not less than all, of the Shares on the terms of the proposal described in the Transfer Notice (subject, however, to any change in such terms permitted under Subsection (b) below) by delivery of a notice of exercise of the Right of First
Refusal within 30 days after the date when the Transfer Notice was received by the Company. 
 (b) Transfer of Shares. If the Company
fails to exercise its Right of First Refusal within 30 days after the date when it received the Transfer Notice, the Optionee may, not later than 90 days following receipt of the Transfer Notice by the Company, conclude a transfer of the
Shares subject to the Transfer Notice on the terms and conditions described in the Transfer Notice, provided that any such sale is made in compliance with applicable federal and state securities laws and not in violation of any other contractual
restrictions to which the Optionee is bound. Any proposed transfer on terms and conditions different from those described in the Transfer Notice, as well as any subsequent proposed transfer by the Optionee, shall again be subject to the Right of
First Refusal and shall require compliance with the procedure described in Subsection (a) above. If the Company exercises its Right of First Refusal, the parties shall consummate the sale of the Shares on the terms set forth in the Transfer
Notice within 60 days after the date when the Company received the Transfer Notice (or within such longer period as may have been specified in the Transfer Notice); provided, however, that in the event the Transfer Notice provided that payment
for the Shares was to be made in a form other than cash or cash equivalents paid at the time of transfer, the Company shall have the option of paying for the Shares with cash or cash equivalents equal to the present value of the consideration
described in the Transfer Notice. 

  
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 (c) Additional or Exchanged Securities and Property. In the event of a merger or
consolidation of the Company with or into another entity, any other corporate reorganization, a stock split, the declaration of a stock dividend, the declaration of an extraordinary dividend payable in a form other than stock, a spin-off, an adjustment in conversion ratio, a recapitalization or a similar transaction affecting the Company’s outstanding securities, any securities or other property (including cash or cash equivalents)
that are by reason of such transaction exchanged for, or distributed with respect to, any Shares subject to this Section 8 shall immediately be subject to the Right of First Refusal. Appropriate adjustments to reflect the exchange or
distribution of such securities or property shall be made to the number and/or class of the Shares subject to this Section 8. 
 (d)
Termination of Right of First Refusal. Any other provision of this Section 8 notwithstanding, in the event that the Stock is readily tradable on an established securities market when the Optionee desires to transfer Shares, the Company
shall have no Right of First Refusal, and the Optionee shall have no obligation to comply with the procedures prescribed by Subsections (a) and (b) above. 

(e) Permitted Transfers. This Section 8 shall not apply to (i) a transfer by beneficiary designation, will or intestate
succession or (ii) a transfer to one or more members of the Optionee’s Immediate Family or to a trust established by the Optionee for the benefit of the Optionee and/or one or more members of the Optionee’s Immediate Family, provided
in either case that the Transferee agrees in writing on a form prescribed by the Company to be bound by all provisions of this Agreement. If the Optionee transfers any Shares acquired under this Agreement, either under this Subsection (e) or
after the Company has failed to exercise the Right of First Refusal, then this Agreement shall apply to the Transferee to the same extent as to the Optionee prior to the transfer. 

(f) Termination of Rights as Stockholder. If the Company makes available, at the time and place and in the amount and form provided in
this Agreement, the consideration for the Shares to be purchased in accordance with this Section 8, then after such time the person from whom such Shares are to be purchased shall no longer have any rights as a holder of such Shares (other than
the right to receive payment of such consideration in accordance with this Agreement). Such Shares shall be deemed to have been purchased in accordance with the applicable provisions hereof, whether or not the certificate(s) therefor have been
delivered as required by this Agreement. 
 (g) Assignment of Right of First Refusal. The Board of Directors may freely assign the
Company’s Right of First Refusal, in whole or in part. Any person who accepts an assignment of the Right of First Refusal from the Company shall assume all of the Company’s rights and obligations under this Section 8. 

  
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 SECTION 9. LEGALITY OF INITIAL ISSUANCE. 

No Shares shall be issued upon the exercise of this option unless and until the Company has determined that: 

(a) It and the Optionee have taken any actions required to register the Shares under the Securities Act or to perfect an
exemption from the registration requirements thereof; 
 (b) Any applicable listing requirement of any stock exchange or
other securities market on which Stock is listed has been satisfied; and 
 (c) Any other applicable provision of federal,
state or foreign law has been satisfied. 
 SECTION 10. NO REGISTRATION RIGHTS. 

The Company may, but shall not be obligated to, register or qualify the sale of Shares under the Securities Act or any other applicable law.
The Company shall not be obligated to take any affirmative action in order to cause the sale of Shares under this Agreement to comply with any law. 

SECTION 11. RESTRICTIONS ON TRANSFER. 

(a) Securities Law Restrictions. Regardless of whether the offering and sale of Shares under the Plan have been registered under the
Securities Act or have been registered or qualified under the securities laws of any state, the Company at its discretion may impose restrictions upon the sale, pledge or other transfer of such Shares (including the placement of appropriate legends
on stock certificates or the imposition of stop-transfer instructions) if, in the judgment of the Company, such restrictions are necessary or desirable in order to achieve compliance with the Securities Act,
the securities laws of any state or any other law. 
 (b) Market Stand-Off. In connection
with any underwritten public offering by the Company of its equity securities pursuant to an effective registration statement filed under the Securities Act, including the Company’s initial public offering, the Optionee or a Transferee shall
not directly or indirectly sell, make any short sale of, loan, hypothecate, pledge, offer, grant or sell any option or other contract for the purchase of, purchase any option or other contract for the sale of, or otherwise dispose of or transfer, or
agree to engage in any of the foregoing transactions with respect to, any Shares acquired under this Agreement without the prior written consent of the Company or its underwriters. Such restriction (the “Market
Stand-Off”) shall be in effect for such period of time following the date of the final prospectus for the offering as may be requested by the Company or such underwriters. In no event, however, shall
such period exceed 185 days. The Market Stand-Off shall in any event terminate two years after the date of the Company’s initial public offering. In the event of the declaration of a stock dividend, a spin-off, a stock split, an adjustment in conversion ratio, a recapitalization or a similar transaction affecting the Company’s outstanding securities without receipt of consideration, any new, substituted or
additional securities which are by reason of such transaction distributed with respect to any Shares subject to the Market Stand-Off, or into which such Shares thereby become convertible, shall

  
 8 

 
immediately be subject to the Market Stand-Off. In order to enforce the Market Stand-Off, the Company may impose
stop-transfer instructions with respect to the Shares acquired under this Agreement until the end of the applicable stand-off period. The Company’s underwriters shall be beneficiaries of the agreement set
forth in this Subsection (b). This Subsection (b) shall not apply to Shares registered in the public offering under the Securities Act, and the Optionee or a Transferee shall be subject to this Subsection (b) only if the directors and
officers of the Company are subject to similar arrangements. 
 (c) Investment Intent at Grant. The Optionee represents and agrees
that the Shares to be acquired upon exercising this option will be acquired for investment, and not with a view to the sale or distribution thereof. 

(d) Investment Intent at Exercise. In the event that the sale of Shares under the Plan is not registered under the Securities Act but
an exemption is available which requires an investment representation or other representation, the Optionee shall represent and agree at the time of exercise that the Shares being acquired upon exercising this option are being acquired for
investment, and not with a view to the sale or distribution thereof, and shall make such other representations as are deemed necessary or appropriate by the Company and its counsel. 

(e) Legends. All certificates evidencing Shares purchased under this Agreement shall bear the following legend: 

“THE SHARES REPRESENTED HEREBY MAY NOT BE SOLD, ASSIGNED, TRANSFERRED, ENCUMBERED OR IN ANY MANNER DISPOSED OF, EXCEPT IN COMPLIANCE WITH
THE TERMS OF A WRITTEN AGREEMENT BETWEEN THE COMPANY AND THE REGISTERED HOLDER OF THE SHARES (OR THE PREDECESSOR IN INTEREST TO THE SHARES). SUCH AGREEMENT GRANTS TO THE COMPANY CERTAIN RIGHTS OF FIRST REFUSAL UPON AN ATTEMPTED TRANSFER OF THE
SHARES AND CERTAIN REPURCHASE RIGHTS UPON TERMINATION OF SERVICE WITH THE COMPANY. THE SECRETARY OF THE COMPANY WILL UPON WRITTEN REQUEST FURNISH A COPY OF SUCH AGREEMENT TO THE HOLDER HEREOF WITHOUT CHARGE.” 

All certificates evidencing Shares purchased under this Agreement in an unregistered transaction shall bear the following legend (and such other restrictive
legends as are required or deemed advisable under the provisions of any applicable law): 
 “THE SHARES REPRESENTED HEREBY HAVE NOT BEEN
REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED, AND MAY NOT BE SOLD, PLEDGED, OR OTHERWISE TRANSFERRED WITHOUT AN EFFECTIVE REGISTRATION THEREOF UNDER SUCH ACT OR AN OPINION OF COUNSEL, SATISFACTORY TO THE COMPANY AND ITS COUNSEL, THAT SUCH
REGISTRATION IS NOT REQUIRED.” 

  
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 (f) Removal of Legends. If, in the opinion of the Company and its counsel, any legend
placed on a stock certificate representing Shares sold under this Agreement is no longer required, the holder of such certificate shall be entitled to exchange such certificate for a certificate representing the same number of Shares but without
such legend. 
 (g) Administration. Any determination by the Company and its counsel in connection with any of the matters set forth
in this Section 11 shall be conclusive and binding on the Optionee and all other persons. 
 SECTION 12. ADJUSTMENT OF SHARES. 

In the event of any transaction described in Section 8(a) of the Plan, the terms of this option (including, without limitation, the number
and kind of Shares subject to this option and the Exercise Price) shall be adjusted as set forth in Section 8(a) of the Plan. In the event that the Company is a party to a merger or consolidation, this option shall be subject to the agreement
of merger or consolidation, as provided in Section 8(b) of the Plan. 
 SECTION 13. TAX CONSEQUENCES. 

(a) Consult Tax Advisor. The Optionee may incur tax liability as a result of the Optionee’s purchase or disposition of
Shares. THE OPTIONEE SHOULD CONSULT A TAX ADVISER BEFORE EXERCISING THE OPTION OR DISPOSING OF SHARES. 
 (b) Impact of Fair
Market Value on the Option. Notwithstanding the Company’s good faith determination of the Fair Market Value of the Company’s Shares for purposes of determining the Exercise Price Per Share of the Option as set forth in the Notice,
taxing authorities may assert that the Fair Market Value of the Shares on the Date of Grant was greater than the Exercise Price Per Share. If designated in the Notice as an Incentive Stock Option, the Option may fail to qualify as an Incentive
Stock Option if the Exercise Price Per Share of the Option is less than the Fair Market Value of the Shares on the Date of Grant. In addition, under Section 409A of the Code, if the Exercise Price Per Share of the Option is less than the
Fair Market Value of the Shares on the Date of Grant, the Option may be treated as a form of deferred compensation and the Optionee may be subject to an additional 20% tax, plus interest and possible penalties. The Optionee is encouraged to
consult a tax adviser regarding the potential impact of Section 409A of the Code. 
 (c) Amendment to Meet the Requirements of
Section 409A. The Optionee acknowledges that the Company, in the exercise of its sole discretion and without the consent of the Optionee, may amend or modify this Option Agreement in any manner and delay the payment of
any amounts payable pursuant to this Option Agreement to the minimum extent necessary to meet the requirements of Section 409A of the Code as amplified by any Internal Revenue Service or U.S. Treasury Department regulations or guidance as the
Company deems appropriate or advisable. 
 SECTION 14. MISCELLANEOUS PROVISIONS. 

(a) Rights as a Stockholder. Neither the Optionee nor the Optionee’s representative shall have any rights as a stockholder with
respect to any Shares subject to this option until the Optionee or the Optionee’s representative becomes entitled to receive such Shares by filing a notice of exercise and paying the Purchase Price pursuant to Sections 4 and 5. 

  
 10 

 (b) No Retention Rights. Nothing in this option or in the Plan shall confer upon the
Optionee any right to continue in Service for any period of specific duration or interfere with or otherwise restrict in any way the rights of the Company (or any Parent or Subsidiary employing or retaining the Optionee) or of the Optionee, which
rights are hereby expressly reserved by each, to terminate his or her Service at any time and for any reason, with or without cause. 
 (c)
Notice. Any notice required by the terms of this Agreement shall be given in writing. It shall be deemed effective upon (i) personal delivery, (ii) deposit with the United States Postal Service, by registered or certified mail, with
postage and fees prepaid or (iii) deposit with Federal Express Corporation, with shipping charges prepaid. Notice shall be addressed to the Company at its principal executive office and to the Optionee at the address that he or she most
recently provided to the Company in accordance with this Subsection (c). 
 (d) Entire Agreement. The Notice of Stock Option
Grant, this Agreement and the Plan constitute the entire contract between the parties hereto with regard to the subject matter hereof. They supersede any other agreements, representations or understandings (whether oral or written and whether
express or implied) which relate to the subject matter hereof. 
 (e) Choice of Law. This Agreement shall be governed by, and
construed in accordance with, the laws of the State of Texas, as such laws are applied to contracts entered into and performed in such State. 
 SECTION
15. DEFINITIONS. 
 (a) “Agreement” shall mean this Stock Option Agreement. 

(b) “Board of Directors” shall mean the Board of Directors of the Company, as constituted from time to time or, if a
Committee has been appointed, such Committee. 
 (c) “Code” shall mean the Internal Revenue Code of 1986, as amended. 

(d) “Committee” shall mean a committee of the Board of Directors, as described in Section 2 of the Plan. 

(e) “Company” shall means ST Financial Group, Inc., a Texas corporation. 

(f) “Consultant” shall mean a person who performs bona fide services for the Company, a Parent or a Subsidiary as a
consultant or advisor, excluding Employees and Outside Directors. 
 (g) “Date of Grant” shall mean the date specified in
the Notice of Stock Option Grant, which date shall be the later of (i) the date on which the Board of Directors resolved to grant this option, (ii) the first day of the Optionee’s Service or (iii) the latest date which the Notice
of Stock Option Grant is signed by the Optionee and the Company. 
 (h) “Disability” shall mean that the Optionee is 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 which has lasted, or can be expected to last, for a continuous period of not less than 3
months. 

  
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 (i) “Employee” shall mean any individual who is a
common-law employee of the Company, a Parent or a Subsidiary. 
 (j) “Exercise
Price” shall mean the amount for which one Share may be purchased upon exercise of this option, as specified in the Notice of Stock Option Grant. 

(k) “Fair Market Value” shall mean the fair market value of a Share, as determined by the Board of Directors in good faith.
Such determination shall be conclusive and binding on all persons. 
 (l) “Immediate Family” shall mean any child,
stepchild, grandchild, parent, stepparent, grandparent, spouse, sibling, mother-in-law,
father-in-law, son-in-law, daughter-in-law, brother-in-law or sister-in-law
and shall include adoptive relationships. 
 (m) “ISO” shall mean an employee incentive stock option described in
Section 422(b) of the Code. 
 (n) “Notice of Stock Option Grant” shall mean the document so entitled to which this
Agreement is attached. 
 (o) “NSO” shall mean a stock option not described in Sections 422(b) or 423(b) of the Code.

 (p) “Optionee” shall mean the person named in the Notice of Stock Option Grant. 

(q) “Outside Director” shall mean a member of the Board of Directors who is not an Employee. 

(r) “Parent” shall mean any corporation (other than the Company) in an unbroken chain of corporations ending with the
Company, if each of the corporations other than the Company owns stock possessing 50% or more of the total combined voting power of all classes of stock in one of the other corporations in such chain. 

(s) “Plan” shall mean the ST Financial Group, Inc. 2008 Stock Plan, as in effect on the Date of Grant. 

(t) “Purchase Price” shall mean the Exercise Price multiplied by the number of Shares with respect to which this option is
being exercised. 
 (u) “Repurchase Period” shall mean a period of 90 consecutive days commencing on the date when the
Optionee’s Service terminates for any reason, including (without limitation) death or disability. 

  
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 (v) “Restricted Share” shall mean a Share that is subject to the Right of
Repurchase. 
 (w) “Right of First Refusal” shall mean the Company’s right of first refusal described in
Section 8. 
 (x) “Right of Repurchase” shall mean the Company’s right of repurchase described in Section 7.

 (y) “Securities Act” shall mean the Securities Act of 1933, as amended. 

(z) “Service” shall mean service as an Employee, Outside Director or Consultant. 

(aa) “Share” shall mean one share of Stock, as adjusted in accordance with Section 8 of the Plan (if applicable). 

(bb) “Stock” shall mean the Common Stock of the Company, with a par value of $____ per Share. 

(cc) “Subsidiary” shall mean any corporation (other than the Company) in an unbroken chain of corporations beginning with the
Company, if each of the corporations other than the last corporation in the unbroken chain owns stock possessing 50% or more of the total combined voting power of all classes of stock in one of the other corporations in such chain. 

(dd) “Transferee” shall mean any person to whom the Optionee has directly or indirectly transferred any Share acquired under
this Agreement. 
 (ee) “Transfer Notice” shall mean the notice of a proposed transfer of Shares described in
Section 8. 

  
 13

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