Document:

Form of Acknowledgment

 Exhibit 10.1 
  
 IBERIABANK CORPORATION 
  
 Memorandum 
  

			
	To:	 	All Holders of Outstanding Stock Options
		
	From:	 	IBERIABANK Corporation
		
	Date:	 	January 6, 2006
		
	Re:	 	Accelerated Vesting of Stock Options

  
 The purpose of this
memorandum is to notify you that the Board of Directors of IBERIABANK Corporation (the “Company”) met on December 30, 2005, and decided to accelerate the vesting of all outstanding stock options. 
  
 As a result, all stock options became immediately exercisable on December 31,
2005, and some may have ceased to qualify for the special tax treatment that is available for incentive stock options (“ISOs”). Attached is a spreadsheet that shows how the acceleration of vesting has affected your stock options, including
their status as ISOs or non-ISOs. All other terms and conditions of your stock option agreements remain unchanged. 
  
 The attached spreadsheet is based on our records, and we ask that you now review it carefully. If you have any questions about this matter,
please contact Mike Pelletier either by calling at 337-521-4038 or by sending an email to mpelletier@iberiabank.com. If you are in agreement, please send your executed agreement to Mike Pelletier by inter-office or regular mail on or before January
31, 2006. 
  
 AGREED TO AND ACKNOWLEDGED this
         day of January, 2006. 
  

											
	 Holder’s Signature:
	 	  

	  	 	  	 	  	 
					
	 Holder’s Printed Name:THIRD ADDENDUM
                                       TO
                                CREDIT AGREEMENT

      This Third Addendum to Credit Agreement ("Third Addendum") is made this
28th day of December, 2005, between Wells Fargo Bank, National Association
("Bank") and John Pappajohn ("Borrower").

                                   RECITALS:

A.    The Bank and the Borrower entered into a Credit Agreement, dated August 9,
      2005 (the "Credit Agreement"), as amended by a First Addendum to Credit
      Agreement dates October 26, 2005, and by a Second Addendum to Credit
      Agreement dated December 15, 2005.

B.    The Bank and the Borrower wish to amend the Credit Agreement pursuant to
      the terms of this Third Addendum.

NOW, THEREFORE, in consideration of the premises and mutual covenants contained
herein it is agreed:

1.    All terms not otherwise defined in this Third Addendum shall have the
      meaning given to such term in the Credit Agreement, as amended. The
      recital paragraphs are hereby incorporated as though fully set forth in
      this Third Addendum.

2.    The table set out in Section 1.4 of the Credit Agreement is hereby deleted
      in its entirety and the following new table is inserted in lieu thereof:

--------------------------------------------------------------------------------
Guaranteed Company                      Guaranteed Amount or Support Obligation
--------------------------------------------------------------------------------
   1. Patient Infosystems, Inc.                      $3,750,000.00
--------------------------------------------------------------------------------
   2. Origix Corp.                                   $1,000,000.00
--------------------------------------------------------------------------------
   3. American CareSource, Inc.                      $3,925,000.00
--------------------------------------------------------------------------------
Total Reduction:                                     $8,675,000.00
--------------------------------------------------------------------------------

3.    Except as modified by this Third Addendum, all the terms and conditions of
      the Credit Agreement, as amended, shall remain in full force and effect.

4.    This Third Addendum may be executed in one or more identical counterparts,
      which, when executed by all parties, shall constitute one and the same
      agreement.

5.    The Credit Agreement, as amended, embodies the entire agreement and
      understanding between the Borrower and the Bank with respect to the
      subject matter thereof and supercedes all prior agreements and
      understandings among such parties with respect to the subject matters
      thereof.

                                        1
<PAGE>

IMPORTANT: READ BEFORE SIGNING. THE TERMS OF THIS AGREEMENT SHOULD BE READ
CAREFULLY BECAUSE ONLY THOSE TERMS IN WRITING ARE ENFORCEABLE. NO OTHER TERMS OR
ORAL PROMISES NOT CONTAINED IN THIS WRITTEN CONTRACT MAY BE LEGALLY ENFORCED.
YOU MAY CHANGE THE TERMS OF THIS AGREEMENT ONLY BY ANOTHER WRITTEN AGREEMENT.
THIS NOTICE ALSO APPLIES TO ANY OTHER CREDIT AGREEMENTS (EXCEPT CONSUMER LOANS
OR OTHER EXEMPT TRANSACTIONS) NOW IN EFFECT BETWEEN YOU AND THIS LENDER.

      IN WITNESS WHEREOF, the parties have executed this Third Addendum as of
the day and year first above written.

BANK:

WELLS FARGO BANK, NATIONAL ASSOCIATION

By /s/ Mark E. Conway
   -----------------------------------
   Mark E. Conway, Vice President

BORROWER:

/s/ John Pappajohn
--------------------------------------
John Pappajohn

                                       2CONSENT TO THIRD ADDENDUM TO CREDIT AGREEMENT,
                  RATIFICATION OF GUARANTY AND WAIVER OF CLAIMS

THIS CONSENT TO THIRD ADDENDUM TO CREDIT AGREEMENT, RATIFICATION OF GUARANTY AND
WAIVER OF CLAIMS ("Consent and Ratification") is made by John Pappajohn
("Personal Guarantor") and delivered to Wells Fargo Bank, National Association
("Bank") effective as of December 28, 2005.

RECITALS:

A.    American CareSource Holdings, Inc. ("Borrower) and the Bank entered into a
      Credit Agreement, dated as of December 1, 2004, as amended from time to
      time ("Credit Agreement") pursuant to which the Bank has made the Line
      available to the Borrower. The Borrower has requested that the Bank
      increase the Line and extend the Line Availability Period, as evidenced
      by a promissory note, dated December 28, 2005, in the original principal
      amount of Five Million Dollars ($5,000,000.00) ("New Revolving Note"). In
      conjunction with the New Revolving Note, the Borrower and Bank entered
      into a Third Addendum to Credit Agreement, dated as of December 28,2005
      (the "Third Addendum").

B.    At the Borrowers request, the Personal Guarantor has agreed to (i)
      unconditionally guaranty the repayment of the New Revolving Note pursuant
      to a written guaranty, dated December 28, 2005, a copy of which is
      attached hereto as Exhibit "A" (the "Guaranty") and (ii) authorize the
      Bank to make, upon the occurrence of an Event of Default, an advance under
      the Personal Guarantor's personal line of credit at the Bank and use the
      proceeds of such advance to reduce the Borrower's obligations under the
      New Revolving Note.

C.    The Bank has agreed to increase the credit amount of the Line and extend
      the Line Availability Period in accordance with the terms of the Third
      Addendum, provided that all of the conditions precedent set out in the
      Third Addendum are satisfied in full, including, without limitation, the
      execution and delivery to the Bank of (i) the Guaranty and (ii) this
      Consent and Ratification by the Personal Guarantor.

NOW THEREFORE, the Personal Guarantor agrees:

1.    The Recital Paragraphs are incorporated in this Consent and Ratification
      as though fUlly set forth herein. The Personal Guarantor has been provided
      with a copy of the New Revolving Note and Third Addendum and acknowledges
      receipt of the same.

2.    The Personal Guarantor hereby consents to the Third Addendum and the New
      Revolving Note.

<PAGE>

3.    The Guarantor hereby acknowledges that the Guaranty secures the New
      Revolving Note, including all extensions, renewals, replacements or
      refinancings thereof, which may be owed by the Borrower to the Bank now or
      in the future.

4.    The Guarantor hereby acknowledges and agrees that his personal line of
      credit with the Bank that is evidenced by a promissory note, dated August
      9, 2005, in the initial principal amount of $15,000,000.00 (and any
      extensions, renewals, replacements or refinancings thereof) ("Guarantor
      Line of Credit") will be reduced by Three Million Nine Hundred Twenty-Five
      Thousand Dollars ($3925,000.00) to effect the Guarantor's support of the
      New Revolving Note and all extensions, renewals, replacements or
      refinancings thereof. The Guarantor further agrees that upon (i) a default
      by the Borrower under the terms of the Credit Agreement and/or the New
      Revolving Note or (ii) the maturity date of the New Revolving Note, the
      Bank is hereby authorized to make an advance under the Guarantor Line of
      Credit and apply the proceeds of such advance to the New Revolving Note.

      The Guarantor further agrees that in the event the Guarantor Line of
      Credit is not renewed or extended upon its expiration or is otherwise
      terminated, the Guarantor shall provide to the Bank a standby letter of
      credit, or some other form of collateral that would be acceptable to the
      Bank in its sole discretion in support of the obligations owed by the
      Borrower under the New Revolving Note, issued by a banking institution
      acceptable to the Bank in an amount not less than Three Million Nine
      Hundred Twenty-Five Thousand Dollars ($3,925,000.00), naming the Bank as
      the beneficiary thereunder.

5.    The Guarantor shall, within 150 days of each calendar year end, provide
      his current personal financial statement certified as correct and promptly
      provide upon filing, a copy of his most recent annual federal income tax
      return and all schedules attached to it.

6.    Except for "Core Proceedings" under the United States Bankruptcy Code, the
      Bank and the Guarantor agree to submit to binding arbitration all claims,
      disputes and controversies between or among them, whether in tort,
      contract or otherwise (and their respective employees, officers,
      directors, attorneys, and other agents) arising out of or relating to in
      any way the Guaranty, this Consent and Ratification, the Credit Agreement,
      and/or other documents and agreements executed in conjunction therewith
      and their negotiation, execution, collateralization, administration,
      repayment, modification, extension, substitution, formation, inducement,
      enforcement, default or termination. Any arbitration proceeding will (i)
      proceed in Des Moines, Iowa; (ii) be governed by the Federal Arbitration
      Act (Title 9 of the United States Code); and (iii) be conducted in
      accordance with the Commercial Arbitration rules of the American
      Arbitration Association ("AAA").

      This arbitration requirement does not limit the right of either party to
      (i) foreclose against collateral; (ii) exercise self-help remedies
      relating to collateral or proceeds of collateral such as setoff or
      repossession; or (iii) obtain provisional ancillary remedies

                                       2
<PAGE>

      such as replevin, injunctive relief, attachment or the appointment of a
      receiver before, during or after the pendency or any arbitration
      proceeding. This exclusion does not constitute a waiver of the right or
      obligation of either party to submit any dispute to arbitration, including
      those arising from the exercise of the actions detailed in sections (i),
      (ii) and (iii) of this Section.

      Any arbitration proceeding will be before a single arbitrator selected
      according to the Commercial Arbitration Rules of the AAA. The arbitrator
      will be a neutral attorney who has practiced in the area of commercial law
      for a minimum of ten years. The arbitrator will determine whether or not
      an issue is arbitratable and will give effect to the statutes of
      limitation in determining any claim. Judgment upon the award rendered by
      the arbitrator may be entered in any court having jurisdiction.

      In any arbitration proceeding the arbitrator will decide (by documents
      only or with a hearing at the arbitrators discretion) any pre-hearing
      motions which are similar to motions to dismiss for failure to state a
      claim or motions for summary adjudication.

      In any arbitration proceeding, discovery will be permitted and will be
      governed by the Iowa Rules of Civil Procedure. All, discovery must be
      completed no later than 20 days before the hearing date and within 180
      days of the commencement of arbitration proceedings. Any requests for an
      extension of the discovery periods, or any discovery disputes, will be
      subject to final determination by the arbitrator upon a showing that the
      request for discovery is essential for the party's presentation and that
      no alternative means for obtaining information is available.

      The arbitrator shall award costs, and expenses of the arbitration
      proceeding in accordance with the provisions of the New Revolving Note.

      This Section shall survive the payment of all obligations to the Bank.

7.    The Guarantor does hereby release and forever discharge the Bank, Wells
      Fargo & Company and their respective affiliates and their officers,
      directors, attorneys, agents, employees, successors and assigns from all
      causes of action, suits, claims and demands of every kind and character,
      liquidated or unliquidated, fixed, contingent, direct or indirect without
      limit, including any action in law or equity, which the Guarantor now has
      or may ever have had against them, if the circumstances giving rise to
      such causes of action, suits, claims and demands (a) are related in any
      manner whatsoever to the transactions which are the subject of this
      Consent and Ratification and (b) arose prior to the date of this Consent
      and Ratification.

8.    This Consent and Ratification shall be binding upon and inure to the
      benefit of the Guarantor and the Sank and their respective successors and
      assigns.

                                       3
<PAGE>

9.    This Consent and Ratification shall be construed in accordance with the
      laws of Iowa applicable to contracts performed entirely within the State.
      Any action to enforce the provisions of this Consent and Ratification
      or arising from the actions of any party in connection therewith, shall be
      brought in the United States District Court for the Southern District of
      Iowa or in the Iowa District Court in Polk County, Iowa, except such
      action as may be necessary by the Bank to protect, preserve and realize
      its security interest in collateral located in another jurisdiction.

      IMPORTANT: READ BEFORE SIGNING. THE TERMS OF THIS AGREEMENT SHOULD BE READ
      CAREFULLY BECAUSE ONLY THOSE TERMS IN WRITING ARE ENFORCEABLE. NO OTHER
      TERMS OR ORAL PROMISES NOT CONTAINED IN THIS WRITTEN CONTRACT MAY BE
      LEGALLY ENFORCED. YOU MAY CHANGE THE TERMS OF THIS AGREEMENT ONLY BY
      ANOTHER WRITTEN AGREEMENT. THIS NOTICE ALSO APPLIES TO ANY OTHER CREDIT
      AGREEMENTS (EXCEPT CONSUMER LOANS OR OTHER EXEMPT TRANSACTIONS) NOW IN
      EFFECT BETWEEN YOU AND THIS LENDER.

IN WITNESS WHEREOF, this Consent and Ratification was executed effective as of
the day and year first above written.

/s/ John Pappajohn
----------------------------
John Pappajohn

                                       4

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