EX-4.19



 Exhibit 4.19 

FIRST SUPPLEMENTAL INDENTURE 

THIS FIRST SUPPLEMENTAL INDENTURE dated as of December 23, 2013 is by and among Wilmington Trust Company, a Delaware
trust company, as Trustee (herein, together with its successors in interest, the “Trustee”), Ameris Bancorp, a Georgia corporation (the “Successor Company”), and The Prosperity Banking Company, a Florida corporation (the
“Company”), under the Indenture referred to below. 
 NOW, THEREFORE, in consideration of the premises and for
other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged by the parties hereto, the Trustee, the Company and the Successor Company hereby agree as follows: 

PRELIMINARY STATEMENTS 

The Trustee and the Company are parties to that certain Indenture dated as of September 20, 2007 (the
“Indenture”), pursuant to which the Company issued U.S. $10,310,000 of its Fixed/Floating Rate Junior Subordinated Deferrable Interest Debentures due 2037. 

As permitted by the terms of the Indenture, the Company, simultaneously with the effectiveness of this First Supplemental
Indenture, shall merge (referred to herein for purposes of Article XI of the Indenture as the “Merger”) with and into the Successor Company with the Successor Company as the surviving corporation. The parties hereto are entering into this
First Supplemental Indenture pursuant to, and in accordance with, Articles IX and XI of the Indenture. 
 SECTION
1.    Definitions.    All capitalized terms used herein that are defined in the Indenture, either directly or by reference therein, shall have the respective meanings assigned them in the Indenture
except as otherwise provided herein or unless the context otherwise requires. 
 SECTION
2.  Interpretation. 
  

	 	(a)	 In this First Supplemental Indenture, unless a clear contrary intention appears: 



 

	 	(i)	 the singular number includes the plural number and vice versa; 



 

	 	(ii)	 reference to any gender includes the other gender; 


  

	 	(iii)	 the words “herein,” “hereof” and “hereunder” and other words of similar import refer to this First Supplemental
Indenture as a whole and not to any particular Section or other subdivision; 


  

	 	(iv)	 reference to any Person includes such Person’s successors and assigns but, if applicable, only if such successors and assigns are permitted by
this First Supplemental Indenture or the Indenture, 










	 	 
and reference to a Person in a particular capacity excludes such Person in any other capacity or individually provided that nothing in this clause (iv) is intended to authorize any
assignment not otherwise permitted by this First Supplemental Indenture or the Indenture; 


  

	 	(v)	 reference to any agreement, document or instrument means such agreement, document or instrument as amended, supplemented or modified and in effect
from time to time in accordance with the terms thereof and, if applicable, the terms hereof, as well as any substitution or replacement therefor and reference to any note includes modifications thereof and any note issued in extension or renewal
thereof or in substitution or replacement therefor; 


  

	 	(vi)	 reference to any Section means such Section of this First Supplemental Indenture; and 



 

	 	(vii)	 the word “including” (and with correlative meaning “include”) means including without limiting the generality of any
description preceding such term. 


  

	 	(b)	 No provision in this First Supplemental Indenture shall be interpreted or construed against any Person because that Person or its legal
representative drafted such provision. 


 SECTION 3.  Assumption of Obligations.

  

	 	(a)	 Pursuant to, and in compliance and accordance with, Section 11.1 and Section 11.2 of the Indenture, the Successor Company hereby
expressly assumes the due and punctual payment of the principal of and premium, if any, and interest on all of the Debentures in accordance with their terms, according to their tenor, and the due and punctual performance and observance of all of the
covenants and conditions of the Indenture to be kept, performed, or observed by the Company under the Indenture. 


  

	 	(b)	 Pursuant to, and in compliance and accordance with, Section 11.2 of the Indenture, the Successor Company succeeds to and is substituted for
the Company, with the same effect as if the Successor Company had originally been named in the Indenture as the Company. 


  

	 	(c)	 The Successor Company also succeeds to and is substituted for the Company with the same effect as if the Successor Company had originally been
named in (i) the Amended and Restated Declaration of Trust of the Trust, dated as of September 20, 2007 (the “Trust Agreement”), as Sponsor (as defined in the Trust Agreement) and (ii) the Guarantee Agreement, dated as of
September 20, 2007 (the “Guarantee”), as Guarantor (as defined in the Guarantee). 



  
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 SECTION 4.  Representations and
Warranties.    The Successor Company represents and warrants that (a) it has all necessary power and authority to execute and deliver this First Supplemental Indenture and to perform the Indenture, (b) that it
is the successor of the Company pursuant to the Merger effected in accordance with applicable law, (c) that it is a corporation organized and existing under the laws of Georgia, (d) that both immediately before and after giving effect to
the Merger and this First Supplemental Indenture, no Default or Event of Default, and no event which, after notice or lapse of time or both, would become an Event of Default, has occurred and is continuing and (e) that this First Supplemental
Indenture is executed and delivered pursuant to Section 9.1 and Article XI of the Indenture and does not require the consent of the Securityholders. 

SECTION 5.  Conditions of Effectiveness.    This First Supplemental Indenture
shall become effective simultaneously with the effectiveness of the Merger, provided, however, that: 
  

	 	(a)	 the Trustee shall have executed a counterpart of this First Supplemental Indenture and shall have received one or more counterparts of this First
Supplemental Indenture executed by the Successor Company and the Company; 


  

	 	(b)	 the Trustee shall have received an Officers’ Certificate stating that (i) this First Supplemental Indenture complies with the
requirements of Article IX of the Indenture; and (ii) in the opinion of the signers, all conditions precedent, if any, provided for in the Indenture relating to the Merger and this First Supplemental Indenture have been complied with;



  

	 	(c)	 the Trustee shall have received an Opinion of Counsel to the effect that (i) all conditions precedent provided for in the Indenture relating
to the Merger and this First Supplemental Indenture have been complied with; (ii) the Merger and this First Supplemental Indenture comply with Articles IX and XI of the Indenture; (iii) this First Supplemental Indenture is authorized or
permitted by, and conforms to, the terms of Article IX of the Indenture; and (iv) it is proper for the Trustee, under the provisions of Article IX of the Indenture, to join in the execution of this First Supplemental Indenture; and



  

	 	(d)	 the Successor Company and the Company shall have duly executed and filed with the Department of the State of the State of Florida and the Secretary
of State of the State of Georgia articles of merger in connection with the Merger. 



  
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 SECTION 6.  Reference to the Indenture. 

 

	 	(a)	 Upon the effectiveness of this First Supplemental Indenture, each reference in the Indenture to “this Indenture,” “hereunder,”
“herein” or words of like import shall mean and be a reference to the Indenture, as affected, amended and supplemented hereby. 


  

	 	(b)	 Upon the effectiveness of this First Supplemental Indenture, each reference in the Debentures to the Indenture including each term defined by
reference to the Indenture shall mean and be a reference to the Indenture or such term, as the case may be, as affected, amended and supplemented hereby. 


  

	 	(c)	 The Indenture, as amended and supplemented hereby shall remain in full force and effect and is hereby ratified and confirmed.



 SECTION 7.  Execution in Counterparts.    This First
Supplemental Indenture may be executed in any number of counterparts and by different parties hereto in separate counterparts, each of which when so executed and delivered shall be deemed to be an original and all of which when taken together shall
constitute but one and the same instrument. 
 SECTION 8.  Governing Law; Binding
Effect.      This First Supplemental Indenture shall be governed by and construed in accordance with the laws of the State of New York and shall be binding upon the parties hereto and their respective successors
and assigns. 
 SECTION 9.    The Trustee.      The Trustee
shall not be responsible in any manner whatsoever for or in respect of the validity or sufficiency of this First Supplemental Indenture or the due execution thereof by the Company or the Successor Company. The recitals of fact contained herein shall
be taken as the statements solely of the Company or the Successor Company, and the Trustee assumes no responsibility for the correctness thereof. 

[Signatures on following page] 

  
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 IN WITNESS WHEREOF, the parties hereto have caused this First Supplemental
Indenture to be duly executed as of the day and year first written above. 
  

									
		 	 THE PROSPERITY BANKING COMPANY

				
		 	 By:
	 	   /s/ James E. Creamer, Jr.
	 	
		 		 	 James E. Creamer, Jr.
	 	
		 		 	 President and Chief Operating Officer
	 	
			
		 	 AMERIS BANCORP
	 	
				
		 	 By:
	 	   /s/ Edwin W. Hortman, Jr.
	 	
		 		 	 Edwin W. Hortman, Jr.
	 	
		 		 	 President and Chief Executive Officer
	 	


									
		
		 	 WILMINGTON TRUST COMPANY, not in its individual

capacity, but solely as Trustee

				
		 	 By:
	 	   /s/ Michael H. Wass
	 	
		 	 Name:
	 	 Michael H. Wass
	 	
		 	 Title:
	 	 Assistant Vice President
	 	


  
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