EX-10.29.3



 Exhibit 10.29.3 

REVOLVING CREDIT NOTE 
  

			
	$15,000,000	  	July 22, 2015

 FOR VALUE RECEIVED, INDEPENDENT BANK GROUP, INC., a Texas corporation and a registered bank holding company
(the “Borrower”), hereby promises to pay to the order of FROST BANK, a Texas state bank (“Lender”), at its main office in San Antonio, Texas or at such other place as the holder hereof may from time to time in
writing designate, in lawful money of the United States of America, the principal sum of Fifteen Million Dollars ($15,000,000.00), or so much thereof as has been advanced and remains outstanding pursuant to Section 2.1 of the Credit Agreement
by and between the Borrower and Lender dated as of the date hereof (as the same may be amended, modified, supplemented, extended or restated from time to time, the “Credit Agreement”). The Borrower also promises to pay all accrued
interest on the unpaid principal amount of each Revolving Loan payable at such rates and at such times as provided in the Credit Agreement, and shall pay all other costs, charges and fees due thereunder, all as provided in the Credit Agreement. This
Revolving Credit Note (as the same may be amended, modified, supplemented, extended or restated from time to time, this “Note”) shall bear interest on the unpaid principal balance before maturity (whether upon demand, acceleration
or otherwise) at the rates set forth in the Credit Agreement. Capitalized terms not defined in this Note shall have the meanings ascribed thereto in the Credit Agreement. 

Subject to the provisions of the Credit Agreement with respect to acceleration, prepayment or loan limitations, all unpaid principal with
respect to each Revolving Loan, together with accrued interest and all other costs, charges and fees, shall be due and payable in full on the Termination Date for the Revolving Loans. 

This Note evidences indebtedness incurred under, and is entitled to the benefits of and is subject to, the Credit Agreement, together with all
future amendments, modifications, waivers, supplements and replacements thereof, to which Credit Agreement reference is made for a statement of the terms and provisions applicable to this Note, including those governing payment and acceleration of
this Note. Payment and performance of this Note are secured pursuant to a Negative Pledge Agreement, and reference is made thereto and to the Credit Agreement for a statement of terms and provisions thereof. In the event of any conflict between the
terms of this Note and the Credit Agreement, the Credit Agreement shall control. 
 Subject to the Credit Agreement, the Borrower may, from
time to time and without premium or penalty, borrow, prepay and reborrow all loans evidenced by this Note in whole or in part, pursuant to the terms of the Credit Agreement. 

The Borrower hereby agrees to pay such costs incurred by Lender, including reasonable attorneys’ fees and legal expenses, as are
specified in the Credit Agreement. 
 This Note is issued in and shall be governed by the laws of the State of New York. 

No delay or omission on the part of Lender in exercising any right hereunder shall operate as a waiver of such right or of any other remedy
under this Note. A waiver on any one occasion shall not be construed as a waiver of any such right or remedy on a future occasion. 

  
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 All makers, endorsers, sureties, guarantors and other accommodation parties hereby waive
presentment for payment, protest, notice of demand, notice of dishonor and notice of nonpayment and consent, without affecting their liability hereunder, to any and all extensions, renewals, substitutions and alterations of any of the terms of this
Note and to the release of or failure by Lender to exercise any rights against any party liable for or any property securing payment of this Note. 

[signature page follows] 

  
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	INDEPENDENT BANK GROUP, INC.
		
	By:	 	 /s/ Torry Berntsen

	Name:	 	 Torry Berntsen

	Title:	 	 President



 Signature Page to 

Revolving Credit Note