Document:

Exhibit

Exhibit 4.4
AMENDMENT TO THE 
POST OAK BANCSHARES, INC. 
STOCK OPTION PLAN
W I T N E S S E T H:
WHEREAS, Post Oak Bancshares, Inc. (the "Company") presently maintains the Post Oak Bancshares, Inc. Stock Option Plan (the "Plan"); and
WHEREAS, the Company, pursuant to Section 7 of the Plan, has the right to amend the Plan from time to time subject to certain limitations.
NOW, THEREFORE, in order to increase the number of shares of common stock, $0.01 par value, of the Company ("Common Stock") reserved for issuance pursuant to the exercise of options under the Plan, the Plan is hereby amended in the following manner:
1.Subject to the approval of this amendment by the stockholders of the Company, effective as of March 17, 2016, the date this amendment was approved by the Board of Directors of the Company, Section 3 is hereby amended in its entirety to read as follows:
SECTION 3.  Stock Reserved for the Plan.  Subject to adjustment as provided in Section 6 hereof, the aggregate number of shares of Common Stock that may be issued under the Plan is 1,800,000, less the number of shares subject to Adjusted Company Options as of the Effective Date of the Share Exchange pursuant to the Exchange Agreement, any or all of which may be issued through ISOs.  The shares subject to the Plan shall consist of authorized but unissued shares of Common Stock and such number of shares shall be and is hereby reserved for sale for such purpose.  Any of such shares which may remain unsold and which are not subject to outstanding options at the termination of the Plan shall cease to be reserved for the purpose of the Plan, but until termination of the Plan or the termination of the last of the options granted under the Plan, whichever last occurs, the Company shall at all times reserve a sufficient number of shares to meet the requirements of the Plan.  Should any option expire or be canceled prior to its exercise in full, the shares theretofore subject to such option may again be made subject to an option under the Plan.
IN WITNESS WHEREOF, the Company has executed this Amendment to the Post Oak Bancshares, Inc. Stock Option Plan on this 17th day of March, 2016.
POST OAK BANCSHARES, INC.

By: /s/ Roland L. Williams

Name: Roland L. Williams

Title: PresidentExhibit

Exhibit 4.5
AMENDMENT TO THE 
POST OAK BANCSHARES, INC. STOCK OPTION PLAN, AS AMENDED 

This Amendment (this “Amendment”) to the Post Oak Bancshares, Inc. 2004 Stock Option Plan (the “Plan”) is made effective as of the 19th day of September 2018.
W I T N E S S E T H:
WHEREAS, Post Oak Bancshares, Inc. (the “Company”) currently maintains the Plan; 
WHEREAS, the Company desires to provide its option holders with the ability to exercise the options under the Plan through a cashless process; and 
WHEREAS, the Company, pursuant to Section 7 of the Plan, has the right to amend the Plan from time to time subject to certain limitations.
NOW, THEREFORE, the Plan is amended as follows, effective as of the date set forth above:
1.Section 6(d) of the Plan is amended in its entirety to read as follows:
(d)  Procedure for Exercise.  Options shall be exercised by the delivery of written notice to the Secretary of the Company setting forth the number of shares with respect to which the option is being exercised.  Such notice shall be accompanied by (i) cash, cashier’s check, bank draft, or postal or express money order payable to the order of the Company, (ii) subject to the approval by the Committee, certificates representing shares of Common Stock theretofore owned by the Optionee duly endorsed for transfer to the Company, (iii) a combination of (i) and (ii); or (iv) if allowed under the terms of the option agreement, upon conditions established by the Committee, surrender of the options without payment of any other consideration, commission or remuneration (“Cashless Net Exercise”). 
(A)  In the event the options are exercised by Cashless Net Exercise, the number of shares of Common Stock that will be received upon such exercise shall equal (x) the number of shares of Common Stock as to which the options are being exercised, multiplied by (y) a fraction, the numerator of which is the fair market value per share of Common Stock (on such date as is determined by the Committee) less the exercise price, and the denominator of which is such fair market value per share of Common Stock, rounded down to the nearest whole number of shares (the “Cashless Net Exercise Formula”), and the Company shall pay the Optionee cash in an amount equal to the fair market value of any fractional shares.
(B)  In the event the options are exercised by Cashless Net Exercise, such exercise will disqualify the options from being treated for tax purposes as “incentive stock options” under Section 422 of the Internal Revenue Code and such options shall be treated as Nonqualified Options.  As a result, the exercise of the options by Cashless Net Exercise will (x) cause the Optionee to recognize a gain taxable as ordinary income for federal income 

tax purposes; and (y) be subject to applicable tax withholding requirements which may be satisfied as set forth in Section 10(b).
Notice may also be delivered by fax or telecopy provided that the exercise price of such shares is delivered to the Company via wire transfer on the same day the fax is received by the Company.  The notice shall specify the address to which the certificates for such shares are to be mailed.  An Optionee shall be deemed to be a shareholder with respect to shares covered by an option on the date the Company receives such written notice and such option payment.  As promptly as practicable after receipt of such written notification and payment, the Company shall deliver to the Optionee certificates for the number of shares with respect to which such option has been so exercised, issued in the Optionee’s name or such other name as Optionee directs; provided, however, that such delivery shall be deemed effected for all purposes when a stock transfer agent of the Company shall have deposited such certificates in the United States mail, addressed to the Optionee at the address specified pursuant to this Section 6(d).”
2.    Continuing Effect.  All other terms, provisions, conditions, covenants, representations and warranties contained in the Plan are not modified by this Amendment and shall continue in full force and effect as originally written.  As hereby modified and amended, all of the terms and provisions of the Plan are ratified and confirmed.
IN WITNESS WHEREOF, the Company, acting by and through its duly authorized officer, has executed this Amendment as of the date first above written.
POST OAK BANCSHARES, INC.

By: /s/ Roland L. Williams

Name: Roland L. Williams

Title: PresidentExhibit

    

Exhibit 4.6
POST OAK BANCSHARES, INC. 
INCENTIVE STOCK OPTION AGREEMENT
This Incentive Stock Option Agreement ("Option Agreement") is between Post Oak Bancshares, Inc., a Texas corporation, (the "Company"), and _____________________("Optionee"), who agree as follows:
1.Introduction.  The Company heretofore adopted the Post Oak Bank, National Association 2004 Stock Option Plan (the "Plan") for the purpose of providing employees of the Company and its Affiliates (as defined in the Plan) with increased incentive to render services, to exert maximum effort for the business success of the Company and to strengthen the identification of employees with the shareholders.  The Company, acting through the Compensation Committee of its Board of Directors (the "Committee"), has determined that its interests will be advanced by the issuance to Optionee of an incentive stock option under the Plan.
2.    Option.  Subject to the terms and conditions contained herein, the Company hereby irrevocably grants to Optionee the right and option ("Option") to purchase from the Company _______ shares of the Company's common stock, $.01 par value ("Common Stock"), at a price of $_____ per share, which is deemed to be not less than the fair market value of the Common Stock at the date of grant of this Option.
3.    Option Period.  The Option herein granted may be exercised by Optionee in whole or in part at any time during a ten year period beginning on _________________, (the "Option Period"), subject to the limitation that such Option shall be exercisable on or after the specified date for not more than the percentage of the aggregate number of shares of Common Stock granted by this Option Agreement, in accordance with the following schedule:
	
			
	Date
	 
	Percentage of 
Shares Purchasable

	 
	

	20%
40%
60%
80%
                      100%

	 
	 
	 

	 
	 
	 

Notwithstanding anything in this Option Agreement to the contrary, the Committee, in its sole discretion, may waive the foregoing schedule of vesting and upon written notice to Optionee, accelerate the earliest date or dates on which any of the Options granted hereunder are exercisable.
4.    Procedure for Exercise.  The Option herein granted may be exercised by the delivery by Optionee of written notice to the Secretary of the Company setting forth the number of shares of Common Stock with respect to which the Option is being exercised.  The notice shall be accompanied (i) at the election of the Optionee, by cash, cashier's check, bank draft, or postal or express money order payable to the order of the Company, (ii) as allowed by the Committee, by certificates representing "mature shares" of Common Stock theretofore owned by Optionee duly endorsed for transfer to the Company, or (iii) any combination of the preceding, equal in value to the aggregate exercise price.  For purposes of this Option Agreement, "mature shares" means shares of Common Stock that Optionee has held free of any transferability restrictions or risk of forfeiture for at least six (6) months.  Notice may also be delivered by fax or telecopy provided that the exercise price of such shares is received by the Company via wire transfer on the same day the fax or telecopy transmission is received by the Company.  The notice shall specify the address to which the certificates for such shares are to be mailed.  An option to purchase shares of Common Stock in accordance with this Plan shall be deemed to have been exercised immediately prior to the close of business on the date (i) written notice of such exercise and (ii) payment in full of the exercise price for the number of shares for which Options are being 

exercised are both received by the Company and Optionee shall be treated for all purposes as the record holder of such shares of Common Stock as of such date.
As promptly as practicable after receipt of such written notice and payment, the Company shall deliver to Optionee certificates for the number of shares with respect to which such Option has been so exercised, issued in Optionee's name or such other name as Optionee directs; provided, however, that such delivery shall be deemed effected for all purposes when a stock transfer agent of the Company shall have deposited such certificates in the United States mail, addressed to Optionee at the address specified pursuant to this Section 4.
5.    Termination of Employment.  If Optionee ceases to be employed by the Company or its Affiliates for any reason other than death or disability, to the extent the Option is exercisable on the date of such termination of employment, the Option may be exercised during a three month period after such termination of employment and shall expire at the end of such three month period, but in no event may the Option be exercised after the end of the Option Period.  To the extent the Option is not yet exercisable pursuant to Section 3 hereof on the date of such termination of employment, the Option shall terminate on the date of termination of employment.  If Optionee's employment is terminated because of Optionee's theft or embezzlement from the Company or an Affiliate, disclosure of trade secrets of the Company or an Affiliate or the commission of a willful, felonious act while in the employment of the Company or an Affiliate (such reasons shall hereinafter be collectively be referred to as "for cause"), then any Option or unexercised portion thereof granted to Optionee shall expire upon such date of such termination of employment.
6.    Disability or Death.  In the event Optionee dies or is determined to be disabled while Optionee is employed by the Company or its Affiliates, the Option may be exercised (to the extent Optionee would have been entitled to do so at the date of death or the determination of disability) at any time and from time to time, within a one year period after such death or determination of disability, by the Optionee, the guardian of Optionee's estate, the executor or administrator of Optionee's estate or by the person or persons to whom Optionee's rights under this Option Agreement shall pass by will or the laws of descent and distribution and shall expire at the end of such one year period, but in no event may the Option be exercised after the end of the Option Period.  An Optionee shall be deemed to be disabled if, in the opinion of a physician selected by the Committee, Optionee is incapable of performing services for the Company or its Affiliates of the kind Optionee was performing at the time the disability occurred by reason of any medically determinable physical or mental impairment which can be expected to result in death or to be of long, continued and indefinite duration.  The date of determination of disability for purposes hereof shall be the date of such determination by such physician.  To the extent the Option is not yet exercisable pursuant to Section 3 hereof on the date of such death or date of determination of disability, the Option shall terminate on the date of death or determination of disability.
7.    Transferability.  This Option shall not be transferable by Optionee otherwise than by Optionee's will or by the laws of descent and distribution.  During the lifetime of Optionee, the Option shall be exercisable only by Optionee or his or her authorized legal representative.  Any heir or legatee of Optionee shall take rights herein granted subject to the terms and conditions hereof.  No such transfer of this Option Agreement to heirs or legatees of Optionee shall be effective to bind the Company unless the Company shall have been furnished with written notice thereof and a copy of such evidence as the Committee may deem necessary to establish the validity of the transfer and the acceptance by the transferee or transferees of the terms and conditions hereof.
8.    No Rights as Stockholder.  Optionee shall have no rights as a stockholder with respect to any shares of Common Stock covered by this Option Agreement until the Option is exercised by written notice and accompanied by payment as provided in Section 4 of this Option Agreement.
9.    Extraordinary Corporate Transactions.  The existence of outstanding Options shall not affect in any way the right or power of the Company or its stockholders to make or authorize any or all adjustments, recapitalizations, reorganizations or other changes in the Company's capital structure or its business, or any merger or consolidation of the Company, or any issuance of Common Stock or subscription rights thereto, or any issuance of bonds, debentures, preferred or prior preference stock ahead of or affecting the Common Stock or the rights thereof, or the dissolution or liquidation of the Company, or any sale or transfer of all or any part of its assets or business, or 

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any other corporate act or proceedings, whether of a similar character or otherwise.  If the Company undergoes a "Fundamental Change" or a "Corporate Change" (as defined in the Plan), the Options granted hereunder shall be governed by Section 6(j) of the Plan.
10.    Changes in Capital Structure.  If the outstanding shares of Common Stock or other securities of the Company, or both, for which the Option is then exercisable shall at any time be changed or exchanged by declaration of a stock dividend, stock split, combination of shares, recapitalization or reorganization, the number and kind of shares of Common Stock or other securities subject to the Plan or subject to the Option and the exercise price shall be appropriately and equitably adjusted so as to maintain the proportionate number of shares or other securities without changing the aggregate exercise price.
11.    Compliance With Securities Laws.  Upon the acquisition of any shares pursuant to the exercise of the Option herein granted, Optionee (or any person acting under Section 7) will enter into such written representations, warranties and agreements as the Company may reasonably request in order to comply with applicable securities laws or with this Option Agreement.
12.    Compliance With Laws.  Notwithstanding any of the other provisions hereof, Optionee agrees that he or she will not exercise the Option granted hereby, and that the Company will not be obligated to issue any shares pursuant to this Option Agreement, if the exercise of the Option or the issuance of such shares of Common Stock would constitute a violation by Optionee or by the Company of any provision of any law or regulation of any governmental authority.
13.    No Right to Employment.  Optionee who is an employee shall be considered to be in the employment of the Company or its Affiliates so long as he or she remains an employee of the Company or its Affiliates.  Any questions as to whether and when there has been a termination of such employment and the cause of such termination shall be determined by the Committee, and its determination shall be final.  Nothing contained herein shall be construed as conferring upon Optionee the right to continue in the employ of the Company or an Affiliate, nor shall anything contained herein be construed or interpreted to limit the "employment at will" relationship between Optionee and the Company or an Affiliate.
14.    Resolution of Disputes.  As a condition of the granting of the Option hereby, Optionee, and Optionee's heirs, personal representatives and successors agree that any dispute or disagreement which may arise hereunder shall be determined by the Committee in its sole discretion and judgment, and that any such determination and any interpretation by the Committee of the terms of this Option Agreement shall be final and shall be binding and conclusive, for all purposes, upon the Company, Optionee and Optionee's heirs, personal representatives and successors.
15.    Legends on Certificate.  The certificates representing the shares of Common Stock purchased by exercise of the Option will be stamped or otherwise imprinted with legends in such form as the Company or its counsel may require with respect to any applicable restrictions on sale or transfer and the stock transfer records of the Company will reflect stop‐transfer instructions with respect to such shares.
16.    Notices.  Every notice hereunder shall be in writing and shall be given by personal delivery, registered or certified mail, or by fax.  All notices of the exercise of any Option hereunder shall be directed to Post Oak Bancshares, Inc., 2000 West Loop South, Suite 100, Texas 77027, Attention:  Secretary.  Any notice given by the Company to Optionee directed to Optionee at the address on file with the Company shall be effective to bind Optionee and any other person who shall acquire rights hereunder.  The Company shall be under no obligation whatsoever to advise Optionee of the existence, maturity or termination of any of Optionee's rights hereunder and Optionee shall be deemed to have familiarized himself or herself with all matters contained herein and in the Plan which may affect any of Optionee's rights or privileges hereunder.
17.    Construction and Interpretation.  Whenever the term "Optionee" is used herein under circumstances applicable to any other person or persons to whom this award, in accordance with the provisions of 

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Section 7 hereof, may be transferred, the word "Optionee" shall be deemed to include such person or persons.  References to the masculine gender herein also include the feminine gender for all purposes.
18.    Notice of Disposition.  If Optionee disposes of any shares of Common Stock acquired pursuant to the exercise of an Option granted hereunder prior to the earlier of (i) two years from the date of this Option Agreement or (ii) one year from the date the shares of Common Stock are acquired, Optionee shall notify the Company of such disposition within ten days of its occurrence and deliver to the Company any amount of federal or state income tax withholding required by law.  Payment of the withholding shall be made in accordance with Section 10 of the Plan.  If the Optionee fails to pay the withholding tax, the Company is authorized to withhold from any cash remuneration then or thereafter payable to the Optionee any tax required to be withheld by reason of any disposition named herein.
19.    Agreement Subject to Plan.  This Option Agreement is subject to the Plan.  The terms and provisions of the Plan (including any subsequent amendments thereto) are hereby incorporated herein by reference thereto.  In the event of a conflict between any term or provision contained herein and a term or provision of the Plan, the applicable terms and provisions of the Plan will govern and prevail.  All definitions of words and terms contained in the Plan shall be applicable to this Option Agreement.
20.    Binding Effect.  This Option Agreement shall be binding upon and inure to the benefit of any successors to the Company and all persons lawfully claiming under Optionee as provided herein.
21.    Exercise or Forfeit.  The Option shall be subject to the conditions provided in this Section, to which the Optionee agrees.  If the Company's capital falls below the minimum requirements contained in the regulations of the applicable regulatory authority, or falls below a higher requirement as determined by such authority in connection with a cease and desist order, consent order, formal written agreement or Prompt Corrective Action directive, the regulatory authority may direct the Company to require the Optionee to exercise or forfeit its rights pursuant to the Option.  The Company will notify the Optionee within 45 days from the date the regulatory authority notifies the Company in writing that the Optionee must exercise or forfeit its rights pursuant to the Option.  The Company will cancel the Option if it is not exercised within 21 days of the Company's notification.  The Company has agreed to comply with the regulatory authority's request that the Company invoke its right to require the Optionee to exercise or forfeit its rights pursuant to the Option under the circumstances stated herein.
IN WITNESS WHEREOF, this Incentive Stock Option Agreement has been executed as of the _____ day of ___________, 201_.
POST OAK BANCSHARES, INC.
By:        
        
Name:    
        
Title:    
        
OPTIONEE
        
___________________________________________

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