Document:

Master Confirmation of Capped Accelerated Stock Buyback dated 2/7/2007

 EXHIBIT 10.37 
 GOLDMAN, SACHS & CO. | 85 BROAD STREET | NEW YORK, NEW YORK 10004 | TEL: 212 902 1000 
 Opening Transaction

  

			
	To:	  	 Ambac Financial Group, Inc.
 One State Street
Plaza
 New York, New York 10004

		
	A/C:	  	[                    ]
		
	From:	  	Goldman, Sachs & Co.
		
	Re:	  	Capped Accelerated Stock Buyback
		
	Ref. No:	  	As provided in the Supplemental Confirmation
		
	Date:	  	February 7, 2007

 This master confirmation (this “Master Confirmation”), dated as of
February 7, 2007 is intended to supplement the terms and provisions of certain Transactions (each, a “Transaction”) entered into from time to time between Goldman, Sachs & Co. (“GS&Co.”) and Ambac
Financial Group, Inc. (“Counterparty”). This Master Confirmation, taken alone, is neither a commitment by either party to enter into any Transaction nor evidence of a Transaction. The terms of any particular Transaction shall be set
forth in (i) a Supplemental Confirmation in the form of Schedule A hereto (a “Supplemental Confirmation”), which shall reference this Master Confirmation and supplement, form a part of, and be subject to this Master
Confirmation and (ii) a Trade Notification in the form of Schedule B hereto (a “Trade Notification”), which shall reference the relevant Supplemental Confirmation and supplement, form a part of, and be subject to such
Supplemental Confirmation. This Master Confirmation, each Supplemental Confirmation and the related Trade Notification together shall constitute a “Confirmation” as referred to in the Agreement specified below. 
 The definitions and provisions contained in the 2002 ISDA Equity Derivatives Definitions (the “Equity Definitions”), as published by the
International Swaps and Derivatives Association, Inc., are incorporated into this Master Confirmation. This Master Confirmation, each Supplemental Confirmation and the related Trade Notification evidence a complete binding agreement between
Counterparty and GS&Co. as to the subject matter and terms of each Transaction to which this Master Confirmation, such Supplemental Confirmation and Trade Notification relate and shall supersede all prior or contemporaneous written or oral
communications with respect thereto. 
 This Master Confirmation, each Supplemental Confirmation and each Trade Notification supplement, form
a part of, and are subject to an agreement in the form of the 1992 ISDA Master Agreement (Multicurrency –Cross Border) (the “Agreement”) as if GS&Co. and Counterparty had executed the Agreement on the date of this Master
Confirmation (but without any Schedule except for (i) the election of Loss and Second Method, New York law (without regard to the conflicts of law principles) as the governing law and US Dollars (“USD”) as the Termination Currency,
(ii) the election that subparagraph (ii) of Section 2(c) will not apply to the Transactions, (iii) the replacement of the word “third” in the last line of Section 5(a)(i) with the word “first” and
(iv) the election that the “Cross Default” provisions of Section 5(a)(vi) shall apply to Counterparty, with a “Threshold Amount” of USD50 million). 
 All provisions contained or incorporated by reference in the Agreement shall govern this Master Confirmation, each Supplemental Confirmation and each
Trade Notification except as expressly modified herein. 

 If, in relation to any Transaction to which this Master Confirmation, a Supplemental Confirmation and a
Trade Notification relate, there is any inconsistency between the Agreement, this Master Confirmation, any Supplemental Confirmation, any Trade Notification and the Equity Definitions, the following will prevail for purposes of such Transaction in
the order of precedence indicated: (i) such Trade Notification, (ii) such Supplemental Confirmation; (iii) this Master Confirmation; (iv) the Agreement; and (v) the Equity Definitions. 
 1. Each Transaction constitutes a Share Forward Transaction for the purposes of the Equity Definitions. Set forth below are the terms and conditions which, together with
the terms and conditions set forth in the related Supplemental Confirmation and Trade Notification (in respect of the relevant Transaction), shall govern each such Transaction. 
 General Terms: 
  

			
		
	Trade Date:	  	For each Transaction, as set forth in the Supplemental Confirmation.
		
	Buyer:	  	Counterparty
		
	Seller:	  	GS&Co.
		
	Shares:	  	Common Stock, $0.01 par value of Counterparty (Ticker: ABK)
		
	Forward Price:	  	The average of the VWAP Prices for each Exchange Business Day in the Calculation Period.
		
	VWAP Price:	  	For any Exchange Business Day, as determined by the Calculation Agent based on the New York Stock Exchange 10b-18 Volume Weighted Average Price per Share for the regular trading session
(including any extensions thereof) of the Exchange on such Exchange Business Day (without regard to pre-open or after hours trading outside of such regular trading session for such Exchange Business Day), as published by Bloomberg at 4:15 p.m. New
York time (or 15 minutes following the end of any extension of the regular trading session) on such Exchange Business Day, on Bloomberg page “ABK.N <Equity> AQR_SEC” (or any successor thereto). For purposes of calculating the VWAP
Price, the Calculation Agent will include only those trades that are reported during the period of time during which Counterparty could purchase its own shares under Rule 10b-18(b)(2) and pursuant to the conditions of Rule 10b-18(b)(3), each under
the Exchange Act (as defined herein) (such trades, “Rule 10b-18 eligible transactions”).
		
	Forward Price
Adjustment Amount:	  	
 For each Transaction, as set forth in the Supplemental Confirmation.

		
	Calculation Period:	  	The period from and including the first Exchange Business Day immediately following the Hedge Completion Date to and including the Termination Date (as adjusted in accordance with the provisions
hereof).
		
	Termination Date:	  	For each Transaction, the Scheduled Termination Date set forth in the Supplemental Confirmation (as the same may be postponed in accordance with the provisions hereof); provided that
GS&Co. shall have the right to designate any date on or after the First Acceleration Date to be the Termination Date by providing notice to Counterparty of any such designation on such date.
		
	First Acceleration Date:	  	For each Transaction, as set forth in the Supplemental Confirmation.

  

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	Hedge Period:	  	The period from and including the day immediately after the Trade Date to and including the Hedge Completion Date (as adjusted in accordance with the provisions hereof).
		
	Hedge Completion Date:	  	For each Transaction, as set forth in the Trade Notification, to be the Exchange Business Day on which GS&Co. finishes establishing its initial Hedge Positions in respect of such
Transaction, as determined by GS&Co. in its sole discretion, which date shall be subject to any limitations set forth in the Supplemental Confirmation.
		
	Hedge Period Reference
Price:	  	  
 For each Transaction, as set forth in the Trade Notification, to be the
average of the VWAP Prices for each Exchange Business Day in the Hedge Period.

		
	Market Disruption Event:	  	The definition of “Market Disruption Event” in Section 6.3(a) of the Equity Definitions is hereby amended by deleting the words “at any time during the one-hour period that ends
at the relevant Valuation Time” and inserting the words “at any time on any Scheduled Trading Day during the Hedge Period or Calculation Period or” after the word “material,” in the third line thereof.
		
		  	Notwithstanding anything to the contrary in the Equity Definitions, to the extent that a Disrupted Day occurs in the Hedge Period or the Calculation Period, the Calculation Agent may in good
faith and acting in a commercially reasonable manner postpone the Hedge Completion Date or the Termination Date, as the case may be. In such event, the Calculation Agent must determine whether (i) such Disrupted Day is a Disrupted Day in full, in
which case the VWAP Price for such Disrupted Day shall not be included for purposes of determining the Hedge Period Reference Price or the Forward Price, as the case may be, or (ii) such Disrupted Day is a Disrupted Day only in part, in which case
the VWAP Price for such Disrupted Day shall be determined by the Calculation Agent based on Rule 10b-18 eligible transactions in the Shares on such Disrupted Day effected before the relevant Market Disruption Event occurred and/or after the relevant
Market Disruption Event ended, and the weighting of the VWAP Price for the relevant Exchange Business Days during the Hedge Period or the Calculation Period, as the case may be, shall be adjusted in a commercially reasonable manner by the
Calculation Agent for purposes of determining the Hedge Period Reference Price or the Forward Price, as the case may be, with such adjustments based on, among other factors, the duration of any Market Disruption Event and the volume, historical
trading patterns and price of the Shares.
		
		  	If a Disrupted Day occurs during the Hedge Period or the Calculation Period, as the case may be, and each of the nine immediately following Scheduled Trading Days is a Disrupted Day, then the
Calculation Agent, in its good faith and commercially reasonable discretion, may either (i) deem such ninth Scheduled Trading Day to be an Exchange Business Day and determine the VWAP Price for such ninth Scheduled Trading Day using its good faith
estimate of the value of the Shares on such ninth Scheduled Trading Day based on the volume, historical trading patterns and price of the Shares and such other factors as it deems appropriate or (ii) further extend the Hedge Period or the
Calculation Period, as the case may be, as it deems necessary to determine the VWAP Price.
		
	Exchange:	  	New York Stock Exchange
		
	Related Exchange(s):	  	All Exchanges.

  

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	        Prepayment\Variable
        Obligation:	  	Applicable
		
	        Prepayment Amount:	  	For each Transaction, as set forth in the Supplemental Confirmation.
		
	        Prepayment Date:	  	Three (3) Exchange Business Days following the Trade Date.
		
	        Counterparty Additional
        Payment:	  	Counterparty shall pay GS&Co. the Counterparty Additional Payment Amount on the Counterparty Additional Payment Date.
		
	        Counterparty Additional
        Payment
Amount:	  	For each Transaction, as set forth in the Supplemental Confirmation.
		
	        Counterparty Additional
        Payment
Date:	  	The Prepayment Date
		
	Settlement Terms:	  	
		
	        Physical Settlement:	  	Applicable; provided that GS&Co. does not, and shall not, make the agreement or the representations set forth in Section 9.11 of the Equity Definitions related to the restrictions
imposed by applicable securities laws with respect to any Shares delivered by GS&Co. to Counterparty under any Transaction.
		
	        Number of Shares
        to be Delivered:	  	  
 A number of Shares equal to (a) the Prepayment Amount divided by (b) the
Forward Price minus the Forward Price Adjustment Amount; provided that the Number of Shares to be Delivered shall not be less than the Minimum Shares. The Number of Shares to be Delivered on the Settlement Date shall be reduced, but
not below zero, by any Shares delivered pursuant to the Minimum Share Delivery described below.

		
	        Excess Dividend Amount:	  	For the avoidance of doubt, all references to the Excess Dividend Amount shall be deleted from Section 9.2(a)(iii) of the Equity Definitions.
		
	        Settlement Date:	  	Three (3) Exchange Business Days following the Termination Date.
		
	        Settlement Currency:	  	USD
		
	        Initial Share Delivery:	  	GS&Co. shall deliver a number of Shares equal to the Initial Shares to Counterparty on the Initial Share Delivery Date in accordance with Section 9.4 of the Equity Definitions, with the
Initial Share Delivery Date deemed to be a “Settlement Date” for purposes of such Section 9.4.
		
	        Initial Share Delivery Date:	  	The Prepayment Date
		
	        Initial Shares:	  	For each Transaction, as set forth in the Supplemental Confirmation.
		
	        Minimum Share Delivery:	  	GS&Co. shall deliver a number of Shares equal to the excess, if any, of the Minimum Shares over the Initial Shares on the Minimum Share Delivery Date in accordance with Section 9.4 of the
Equity Definitions, with the Minimum Share Delivery Date deemed to be a “Settlement Date” for purposes of such Section 9.4.

  

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	        Minimum Share Delivery Date:	  	Three (3) Exchange Business Days following the Hedge Completion Date.
		
	        Minimum Shares:	  	For each Transaction, as set forth in the Supplemental Confirmation.
		
	Share Adjustments:	  	
		
	        Potential Adjustment Event:	  	Notwithstanding anything to the contrary in Section 11.2(e) of the Equity Definitions, an Extraordinary Dividend shall not constitute a Potential Adjustment Event.
		
	        Extraordinary Dividend:	  	For any calendar quarter occurring (in whole or in part) during the period from and including the first day of the Hedge Period to and including the Termination Date, any dividend or
distribution on the Shares with an ex-dividend date occurring during such calendar quarter (other than any dividend or distribution of the type described in Section 11.2(e)(i) or Section 11.2(e)(ii)(A) or (B) of the Equity Definitions) (a
“Dividend”) the amount or value of which (as determined by the Calculation Agent), when aggregated with the amount or value (as determined by the Calculation Agent) of any and all previous Dividends with ex-dividend dates occurring
in the same calendar quarter, exceeds the Ordinary Dividend Amount.
		
	        Ordinary Dividend Amount:	  	For each Transaction, as set forth in the Supplemental Confirmation.
		
	        Method of Adjustment:	  	Calculation Agent Adjustment
		
	Extraordinary Events:	  	
		
	Consequences of
Merger Events and
Tender Offers:	  	
		
	        (a) Share-for-Share:	  	Modified Calculation Agent Adjustment; provided that Sections 12.2(e) and 12.3(d) shall each be amended hereby to delete the words “, expected dividends, stock loan
rate”.
		
	        (b) Share-for-Other:	  	Cancellation and Payment
		
	        (c) Share-for-Combined:	  	Component Adjustment
		
	        Determining Party:	  	GS&Co.
		
	        Tender Offer:	  	Applicable
		
	        Cancellation Amount:	  	Section 12.8 of the Equity Definitions is hereby amended by deleting the second sentence in paragraph (d) thereof and by deleting paragraph (e) thereof.
		
	        Nationalization,
        Insolvency or
Delisting:	  	  
 Cancellation and Payment; provided that in addition to the provisions of
Section 12.6(a)(iii) of the Equity Definitions, it shall also constitute a Delisting if the Exchange is located in the United States and the Shares are not immediately re-listed, re-traded or re-quoted on any of the New York Stock Exchange, the
American Stock Exchange, The NASDAQ Global Select Market or The NASDAQ Global Market (or their respective successors); if the Shares are immediately re-listed, re-traded or re-quoted on any such exchange or quotation system, such exchange or
quotation system shall be deemed to be the Exchange.

  

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 Notwithstanding anything to the contrary in the Equity Definitions, if, as a result of a Nationalization, an Insolvency
or a Delisting, Cancellation and Payment applies to one or more Transactions hereunder (whether in whole or in part), an Additional Termination Event (with the Transactions (or portions thereof) to which Cancellation and Payment applies being the
Affected Transactions, Counterparty being the sole Affected Party and the Early Termination Date being the date on which such Transactions would be cancelled pursuant to Article 12 of the Equity Definitions) shall be deemed to occur, and, in lieu of
Sections 12.7 and 12.8 of the Equity Definitions, Section 6 of the Agreement shall apply to such Affected Transactions. 
 Additional Disruption Events: 
  

			
	(a) Change in Law:	  	Applicable
		
	(b) Failure to Deliver:	  	Applicable
		
	(c) Insolvency Filing:	  	Applicable
		
	(d) Loss of Stock Borrow:	  	Applicable; provided that Sections 12.9(a)(vii) and 12.9(b)(iv) of the Equity Definitions shall be amended by deleting the words “at a rate equal to or less than the Maximum Stock
Loan Rate” and replacing them with “at a rate of return equal to or greater than zero”.
		
	      Hedging Party:	  	GS&Co.
		
	      Determining Party:	  	GS&Co.

 Notwithstanding anything to the contrary in the Equity Definitions, if, as a result of an Additional Disruption
Event, any Transaction is cancelled or terminated, an Additional Termination Event (with such terminated Transaction(s) being the Affected Transaction(s), Counterparty being the sole Affected Party and the Early Termination Date being the date on
which such Transaction(s) would be cancelled or terminated pursuant to Article 12 of the Equity Definitions) shall be deemed to occur, and, in lieu of Sections 12.7 and 12.8 of the Equity Definitions, Section 6 of the Agreement shall apply to
such Affected Transaction(s). 
  

			
	 Non-Reliance/Agreements and
 Acknowledgements Regarding
 Hedging Activities/Additional
 Acknowledgements:
	  	Applicable
		
	 Transfer:
	  	Notwithstanding anything to the contrary in the Agreement, GS&Co. may assign, transfer and set over all rights, title and interest, powers, privileges and remedies of GS&Co. under
this Transaction, in whole or in part, to an affiliate of GS&Co. whose obligations are guaranteed by The Goldman Sachs Group, Inc. without the consent of Counterparty.
		
	 GS&Co. Payment Instructions:
	  	
		  	
		  	
		  	
		
	 Counterparty’s Contact Details
 for Purpose of Giving Notice:
	  	
		  	
		  	

  

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		  	With a copy to:
		  	
		  	
		  	
		  	Telephone No.:     
		  	Facsimile No.:       
		
	GS&Co.’s Contact Details for
Purpose of Giving Notice:	  	

Telephone No.:     
		  	Facsimile No.:       
		  	Attention: Equity Operations: Options and Derivatives
		
		  	With a copy to:
		  	
		  	
		  	
		  	
		  	
		  	
		
	2. Calculation Agent.	  	GS&Co.

 3. Additional Mutual Representations, Warranties and Covenants. In addition to the representations and
warranties in the Agreement, each party represents, warrants and covenants to the other party that: 
 (a) Eligible
Contract Participant. It is an “eligible contract participant”, as defined in the U.S. Commodity Exchange Act (as amended), and is entering into each Transaction hereunder as principal and not for the benefit of any third party.

 (b) Accredited Investor. Each party acknowledges that the offer and sale of each Transaction to it is intended to
be exempt from registration under the Securities Act of 1933, as amended (the “Securities Act”), by virtue of Section 4(2) thereof and the provisions of Regulation D thereunder (“Regulation D”). Accordingly,
each party represents and warrants to the other that (i) it has the financial ability to bear the economic risk of its investment in each Transaction and is able to bear a total loss of its investment, (ii) it is an “accredited
investor” as that term is defined under Regulation D and (iii) the disposition of each Transaction is restricted under this Master Confirmation, the Securities Act and state securities laws. 
 4. Additional Representations, Warranties and Covenants of Counterparty. In addition to the representations, warranties and covenants in the Agreement and those
contained herein, as of (i) the date hereof, (ii) the Trade Date for each Transaction hereunder and (iii) to the extent indicated below, each day during the Hedge Period and Calculation Period for each Transaction hereunder,
Counterparty represents, warrants and covenants to GS&Co. that: 
 (a) the purchase or writing of each Transaction and
the transactions contemplated hereby will not violate Rule 13e-1 or Rule 13e-4 under the Securities Exchange Act of 1934, as amended (the “Exchange Act”); 
 (b) it is not entering into any Transaction (i) on the basis of, and is not aware of, any material non-public information with
respect to the Shares (ii) in anticipation of, in connection with, or to facilitate, a distribution of its securities, a self tender offer or a third-party tender offer or (iii) to create actual or apparent trading activity in the Shares
(or any security convertible into or exchangeable for the Shares) or to raise or depress or otherwise manipulate the price of the Shares (or any security convertible into or exchangeable for the Shares); 
 (c) each Transaction is being entered into pursuant to a publicly disclosed Share buy-back program and its Board of Directors has
approved the use of derivatives to effect the Share buy-back program; 
 (d) without limiting the generality of
Section 13.1 of the Equity Definitions, it acknowledges that GS&Co. is not making any representations or warranties with respect to the treatment of any Transaction under 

  

 7 

 
FASB Statements 128, 133 as amended, or 149, 150, EITF 00-19, EITF 03-6 (or any successor issue statements) or under Financial Accounting Standards
Board’s Liabilities & Equity Project; 
 (e) Counterparty is in compliance with its reporting obligations under
the Exchange Act and its most recent Annual Report on Form 10-K, together with all reports subsequently filed by it pursuant to the Exchange Act, taken together and as amended and supplemented to the date of this representation, do not, as of their
respective filing dates, contain any untrue statement of a material fact or omit to state any material fact required to be stated therein or necessary to make the statements therein, in the light of the circumstances under which they were made, not
misleading; 
 (f) Counterparty shall report each Transaction as required under Regulation S-K and/or Regulation S-B under
the Exchange Act, as applicable; 
 (g) Counterparty is not, and will not be, engaged in a “distribution” of Shares
or securities that are convertible into, or exchangeable or exercisable for Shares for purposes of Regulation M promulgated under the Exchange Act (“Regulation M”) at any time during the Hedge Period or the Relevant Period for any
Transaction unless Counterparty has provided written notice to GS&Co. of such distribution (a “Regulation M Distribution Notice”) not later than the Scheduled Trading Day immediately preceding the first day of the relevant
“restricted period” (as defined in Regulation M); Counterparty acknowledges that any such notice may cause the Hedge Period or the Calculation Period to be extended or suspended pursuant to Section 5 below; accordingly, Counterparty
acknowledges that its delivery of such notice must comply with the standards set forth in Section 6 below; “Relevant Period” means, for any Transaction, the period commencing on the first day of the Calculation Period and
ending on the 20th Exchange Business Day immediately following the end of the Calculation Period, or such earlier day as elected by GS&Co. and communicated to Counterparty on such day; 
 (h) Counterparty acknowledges that each Transaction is a derivatives transaction in which it has granted GS&Co. an option; GS&Co.
may purchase shares for its own account at an average price that may be greater than, or less than, the price paid by Counterparty under the terms of the related Transaction; 
 (i) as of the Trade Date, the Prepayment Date, the Initial Share Delivery Date, the Minimum Share Delivery Date and the Settlement Date
for each Transaction, Counterparty is not “insolvent” (as such term is defined under Section 101(32) of the U.S. Bankruptcy Code (Title 11 of the United States Code) (the “Bankruptcy Code”)) and Counterparty would be
able to purchase Shares for the Prepayment Amount for such Transaction in compliance with the laws of the jurisdiction of Counterparty’s incorporation; 
 (j) Counterparty is not and, after giving effect to any Transaction, will not be, required to register as an “investment
company” as such term is defined in the Investment Company Act of 1940, as amended; 
 (k) Counterparty will not take
any action or refrain from taking any action that would limit or in any way adversely affect GS&Co.’s rights under the Agreement, this Master Confirmation, any Supplemental Confirmation or any Trade Notification; and 
 (l) it has not and, during the Hedge Period or Relevant Period for any Transaction, will not enter into agreements similar to the
Transactions described herein where any initial hedge period (however defined), the calculation period (however defined) or the relevant period (however defined) in such other transaction will overlap at any time (including as a result of extensions
in such initial hedge period, calculation period or relevant period as provided in the relevant agreements) with any Hedge Period or Relevant Period under this Master Confirmation. In the event that the initial hedge period, calculation period or
relevant period in any other similar transaction overlaps with any Hedge Period or Relevant Period under this Master Confirmation as a result of an extension of the Termination Date pursuant to Section 5 herein, Counterparty shall promptly
amend such transaction to avoid any such overlap. 
 5. Suspension of Hedge Period or Calculation Period. 
  

 8 

 (a) If Counterparty concludes that it will be engaged in a distribution of the Shares for
purposes of Regulation M, Counterparty agrees that it will, on a day no later than the Scheduled Trading Day immediately preceding the start of the relevant restricted period, provide GS&Co. with a Regulation M Distribution Notice. If on any
Scheduled Trading Day Counterparty delivers the Regulation M Distribution Notice in writing (and confirms by telephone) by 8:30 a.m. New York Time (the “Notification Time”), then such notice shall be effective as of such
Notification Time. In the event that Counterparty delivers such Regulation M Distribution Notice in writing and/or confirms by telephone after the Notification Time, then such notice shall be effective as of 8:30 a.m. New York Time on the following
Scheduled Trading Day or as otherwise required by law or agreed between Counterparty and GS&Co. Upon the effectiveness of such Regulation M Distribution Notice, the Calculation Period or the Hedge Period, as the case may be, shall be suspended
and the Termination Date or the Hedge Completion Date or both, as the case may be, shall postponed for each Scheduled Trading Day in such restricted period; accordingly, Counterparty acknowledges that its delivery of such notice must comply with the
standards set forth in Section 6 below, including, without limitation, the requirement that such notice be made at a time at which none of Counterparty or any officer, director, manager or similar person of Counterparty is aware of any material
non-public information regarding Counterparty or the Shares. 
 (b) In the event that GS&Co. concludes, in its sole
discretion, that it is appropriate with respect to any legal, regulatory or self-regulatory requirements or related policies and procedures (whether or not such requirements, policies or procedures are imposed by law or have been voluntarily adopted
by GS&Co.), for it to refrain from purchasing Shares on any Scheduled Trading Day during the Hedge Period or the Calculation Period, GS&Co. may by written notice to Counterparty elect to suspend the Hedge Period or the Calculation Period, or
both, as the case may be, for such number of Scheduled Trading Days as is specified in the notice. The notice shall not specify, and GS&Co. shall not otherwise communicate to Counterparty, the reason for GS&Co.’s election to suspend the
Hedge Period or the Calculation Period, or both, as the case may be. The Hedge Period or the Calculation Period, or both, as the case may be, shall be suspended and the Termination Date shall be extended for each Scheduled Trading Day occurring
during any such suspension. 
 (c) In the event that the Calculation Period or the Hedge Period, as the case may be, is
suspended pursuant to Section 5(a) or 5(b) above during the regular trading session on the Exchange, such suspension shall be deemed to be an additional Market Disruption Event, and the second and third paragraphs under “Market Disruption
Event” shall apply. 
 (d) In the event that the Calculation Period is extended pursuant to any provision hereof
(including, without limitation, pursuant to Section 9(d) below), the Calculation Agent, in its commercially reasonable discretion, shall adjust any relevant terms of the related Transaction if necessary to preserve as nearly as practicable the
economic terms of such Transaction prior to such extension; provided that Counterparty shall not be required to make any additional cash payments or deliver any Shares in connection with any such adjustments. 
 6. 10b5-1 Plan. Counterparty represents, warrants and covenants to GS&Co. that for each Transaction: 
 (a) Counterparty is entering into this Master Confirmation and each Transaction hereunder in good faith and not as part of a plan or
scheme to evade the prohibitions of Rule 10b5-1 under the Exchange Act (“Rule 10b5-1”). It is the intent of the parties that each Transaction entered into under this Master Confirmation comply with the requirements of Rule
10b5-1(c)(1)(i)(A) and (B) and each Transaction entered into under this Master Confirmation shall be interpreted to comply with the requirements of Rule 10b5-1(c). 
 (b) Counterparty will not seek to control or influence GS&Co. to make “purchases or sales” (within the meaning of Rule
10b5-1(c)(1)(i)(B)(3)) under any Transaction entered into under this Master Confirmation, including, without limitation, GS&Co.’s decision to enter into any hedging transactions. Counterparty represents and warrants that it has consulted
with its own advisors as to the legal aspects of its adoption and implementation of this Master Confirmation, each Supplemental Confirmation and each Trade Notification under Rule 10b5-1. 
 (c) Counterparty acknowledges and agrees that any amendment, modification, waiver or termination of this Master Confirmation, the
relevant Supplemental Confirmation or Trade Notification must be effected in accordance with the requirements for the amendment or termination of a “plan” as defined in Rule 10b5-1(c). Without limiting the generality of the
foregoing, any such amendment, modification, waiver or termination shall be 

  

 9 

 
made in good faith and not as part of a plan or scheme to evade the prohibitions of Rule 10b-5, and no such amendment, modification, waiver or termination
shall be made at any time at which Counterparty or any officer, director, manager or similar person of Counterparty is aware of any material non-public information regarding Counterparty or the Shares. 
 7. Counterparty Purchases. 
 Counterparty (or any “affiliated purchaser” as defined in Rule 10b-18 under the Exchange Act (“Rule 10b-18”)) shall not, without the prior written consent of GS&Co., directly or
indirectly purchase any Shares, listed contracts on the Shares or securities that are convertible into, or exchangeable or exercisable for Shares (including, without limitation, any Rule 10b-18 purchases of blocks (as defined in Rule 10b-18)) during
any Hedge Period or Relevant Period (as extended pursuant to the provisions hereof). During this time, any such purchases by Counterparty shall be made through GS&Co., or if not through GS&Co., with the prior written consent of GS&Co.,
and in compliance with Rule 10b-18 or otherwise in a manner that Counterparty and GS&Co. believe is in compliance with applicable requirements. 
 8. Additional Termination Event. The declaration of any Extraordinary Dividend by the Issuer during the Hedge Period and the Calculation Period will constitute an Additional Termination Event, with Counterparty as the sole Affected
Party and all Transactions hereunder as the Affected Transactions. 
 9. Special Provisions for Merger Transactions. Notwithstanding anything to the
contrary herein or in the Equity Definitions, 
 (a) Counterparty shall, prior to the opening of trading in the Shares on any
day during any Hedge Period or Relevant Period on which Counterparty makes, or expects to be made, any public announcement (as defined in Rule 165(f) under the Securities Act of 1933, as amended) of any Merger Transaction, notify GS&Co. of such
public announcement; 
 (b) promptly notify GS&Co. following any such announcement that such announcement has been made;
and 
 (c) promptly provide GS&Co. with written notice specifying (i) Counterparty’s average daily Rule 10b-18
Purchases (as defined in Rule 10b-18) during the three full calendar months immediately preceding the Announcement Date that were not effected through GS&Co. or its affiliates and (ii) the number of Shares purchased pursuant to the proviso
in Rule 10b-18(b)(4) under the Exchange Act for the three full calendar months preceding the Announcement Date. Such written notice shall be deemed to be a certification by Counterparty to GS&Co. that such information is true and correct. In
addition, Counterparty shall promptly notify GS&Co. of the earlier to occur of the completion of such transaction and the completion of the vote by target shareholders. Counterparty acknowledges that any such notice may cause the terms of any
Transaction to be adjusted or such Transaction to be terminated; accordingly, Counterparty acknowledges that its delivery of such notice must comply with the standards set forth in Section 6; and 
 (d) GS&Co. in its sole discretion may (i) make adjustments to the terms of any Transaction, including, without limitation, the
Termination Date and the Forward Price Adjustment Amount to account for the number of Shares that could be purchased on each day during the Hedge Period or the Calculation Period in compliance with Rule 10b-18 following such public announcement,
provided that Counterparty shall not be required to make any additional cash payments or deliver any Shares in connection with any such adjustments or (ii) treat the occurrence of such public announcement as an Additional Termination
Event with Counterparty as the sole Affected Party. 
 “Merger Transaction” means any merger, acquisition or
similar transaction involving a recapitalization as contemplated by Rule 10b-18(a)(13)(iv) under the Exchange Act. 
 10.
Acknowledgments. The parties hereto intend for: 
  

 10 

 (a) Each Transaction to be a “securities contract” as defined in
Section 741(7) of the Bankruptcy Code, a “swap agreement” as defined in Section 101(53B) of the Bankruptcy Code and a “forward contract” as defined in Section 101(25) of the Bankruptcy Code, and the parties hereto
to be entitled to the protections afforded by, among other Sections, Sections 362(b)(6), 362(b)(17), 362(b)(27), 362(o), 546(e), 546(g), 546(j), 555, 556, 560 and 561 of the Bankruptcy Code; 
 (b) The Agreement to be a “master netting agreement” as defined in Section 101(38A) of the Bankruptcy Code; 
 (c) A party’s right to liquidate or terminate any Transaction, net out or offset termination values or payment amounts, and to
exercise any other remedies upon the occurrence of any Event of Default or Termination Event under the Agreement with respect to the other party or any Extraordinary Event that results in the termination or cancellation of any Transaction to
constitute a “contractual right” (as defined in the Bankruptcy Code); and 
 (d) All payments for, under or in
connection with each Transaction, all payments for the Shares and the transfer of such Shares to constitute “settlement payments” and “transfers” (as defined in the Bankruptcy Code). 
 11. Credit Support Documents. The parties hereto acknowledge that no Transaction hereunder is secured by any collateral that would otherwise secure the
obligations of Counterparty herein or pursuant to the Agreement. 
 12. Limitation on Set-off. (a) Notwithstanding anything to the contrary in
the Agreement or the Equity Definitions, the calculation of any Settlement Amounts and Unpaid Amounts shall be calculated separately for (A) all Terminated Transactions in the Shares of the Issuer that qualify as equity under applicable
accounting rules (collectively, the “Equity Shares”) as determined by the Calculation Agent and (B) all other Terminated Transactions under the Agreement including, without limitation, Transactions in Shares other than those of
the Issuer (collectively, the “Other Shares”) and the netting and set-off provisions of the Agreement shall only operate to provide netting and set-off (i) among Terminated Transactions in the Equity Shares and (ii) among
Terminated Transactions in the Other Shares. In no event shall the netting and set-off provisions of the Agreement operate to permit netting and set-off between Terminated Transactions in the Equity Shares and Terminated Transactions in the Other
Shares. 
 (b) The parties agree that upon the occurrence of an Event of Default or Termination Event with respect to a party who is the
Defaulting Party or an Affected Party (“X”), the other party (“Y”) will have the right (but not be obliged) without prior notice to X or any other person to set-off or apply any obligation of X owed to Y (or any
Affiliate of Y) (whether or not matured or contingent and whether or not arising under the Agreement, and regardless of the currency, place of payment or booking office of the obligation) against any obligation of Y (or any Affiliate of Y) owed to X
(whether or not matured or contingent and whether or not arising under the Agreement, and regardless of the currency, place of payment or booking office of the obligation). Y will give notice to the other party of any set-off effected under this
Section 12. 
 Amounts (or the relevant portion of such amounts) subject to set-off may be converted by Y into the Termination Currency
at the rate of exchange at which such party would be able, acting in a reasonable manner and in good faith, to purchase the relevant amount of such currency. If any obligation is unascertained, Y may in good faith estimate that obligation and
set-off in respect of the estimate, subject to the relevant party accounting to the other when the obligation is ascertained. Nothing in this Section 12 shall be effective to create a charge or other security interest. This Section 12
shall be without prejudice and in addition to any right of set-off, combination of accounts, lien or other right to which any party is at any time otherwise entitled (whether by operation of law, contract or otherwise). 
 (c) Notwithstanding anything to the contrary in the foregoing, GS&Co. agrees not to set off or net amounts due from Counterparty with respect to any
Transaction against amounts due from GS&Co. to Counterparty with respect to contracts or instruments that are not Equity Contracts. “Equity Contract” means any transaction or instrument that does not convey rights to GS&Co.
senior to claims of common stockholders in the event of Counterparty’s bankruptcy. 
  

 11 

 13. Staggered Delivery of Shares. (a) GS& Co. may satisfy its obligation to deliver the Initial Shares on
the Initial Share Delivery Date by making separate deliveries of Shares at more than one time on the Initial Share Delivery Date, so long as the aggregate number of Shares so delivered is equal to the number of Initial Shares. 
 (b) GS&Co. may, by prior notice to Counterparty, elect to deliver the Shares it is required to deliver under “Minimum Share Delivery”
(above) and/or the Number of Shares to be Delivered, as the case may be, on two or more dates (each, a “Staggered Delivery Date”) and/or at two or more times on the Staggered Delivery Date as follows: 
 (i) in such notice, GS&Co. will specify to Counterparty the related Staggered Delivery Dates (each of which will be on or prior to
the Minimum Share Delivery Date or the Settlement Date, as the case may be) or delivery times and how it will allocate the Shares it is required to deliver among the Staggered Delivery Dates or delivery times; and 
 (ii) the aggregate number of Shares that GS&Co. will deliver to Counterparty hereunder on all such Staggered Delivery Dates and
delivery times relating to the Minimum Share Delivery Date will equal the number of Shares that GS&Co. would otherwise be required to deliver on the Minimum Share Delivery Date, and the aggregate number of Shares that GS&Co. will deliver to
Counterparty hereunder on all such Staggered Delivery Dates and delivery times relating to the Settlement Date will equal the Number of Shares to be Delivered that GS&Co. would otherwise be required to deliver on the Settlement Date. 

14. Early Termination. In the event that an Early Termination Date (whether as a result of an Event of Default or a Termination Event) occurs or is designated
with respect to any Transaction (except as a result of a Merger Event in which the consideration or proceeds to be paid to holders of Shares consists solely of cash), if GS&Co. would owe any amount to Counterparty pursuant to
Section 6(d)(ii) of the Agreement (calculated as if the Transactions being terminated on such Early Termination Date were the sole Transactions under the Agreement) (any such amount, a “GS&Co. Amount”), then, in lieu of any
payment of such GS&Co. Amount, Counterparty may, no later than the Early Termination Date or the date on which such Transaction is terminated, elect for GS&Co. to deliver to Counterparty a number of Shares (or, in the case of a Merger Event,
a number of units, each comprising the number or amount of the securities or property that a hypothetical holder of one Share would receive in such Merger Event (each such unit, an “Alternative Delivery Unit” and, the securities or
property comprising such unit, “Alternative Delivery Property”)) with a value equal to the GS&Co. Amount, as determined by the Calculation Agent (and the parties agree that, in making such determination of value, the Calculation
Agent may take into account a number of factors, including the market price of the Shares or Alternative Delivery Property on the date of early termination and the prices at which GS&Co. purchases Shares or Alternative Delivery Property to
fulfill its delivery obligations under this Section 14); provided that in determining the composition of any Alternative Delivery Unit, if the relevant Merger Event involves a choice of consideration to be received by holders, such
holder shall be deemed to have elected to receive the maximum possible amount of cash. If Counterparty so elects for GS&Co. to deliver Alternative Delivery Property and such Alternative Delivery Property consists of or includes Shares not owned
by GS&Co. or its affiliates in connection with the hedging of such Transaction as of such Early Termination Date, then GS&Co. shall effect any purchases of such Shares in a manner that would, if such purchases were made by Counterparty,
satisfy the requirements of paragraphs (b)(2), (3) and (4) of Rule 10b-18, taking into account any Securities and Exchange Commission no-action letters as appropriate, except that GS&Co. shall not be responsible for any delays in
between the execution and reporting of a trade of Shares on the Exchange and other circumstances beyond its control. In addition, if Counterparty so elects for GS&Co. to deliver Alternative Delivery Property and such Alternative Delivery
Property consists of or includes securities of Counterparty, Counterparty shall be deemed to have repeated the representations and warranties contained in paragraph 4(b) of this Confirmation as of the time of such election. 
 15. Payment Date upon Early Termination. Notwithstanding anything to the contrary in Section 6(d)(ii) of the Agreement, all amounts calculated as being due
in respect of an Early Termination Date under Section 6(e) of the Agreement will be payable on the day that notice of the amount payable is effective; provided that if Counterparty elects to receive Shares or Alternative Delivery
Property in accordance with Section 14, such Shares or Alternative Delivery Property shall be delivered on a date selected by GS&Co as promptly as practicable. 
  

 12 

 16. Special Provisions for Counterparty Payments. The parties hereby agree that, notwithstanding anything to the
contrary herein or in the Agreement, in the event that an Early Termination Date (whether as a result of an Event of Default or a Termination Event) occurs or is designated with respect to any Transaction and, as a result, Counterparty owes to
GS&Co. an amount calculated under Section 6(e) of the Agreement (calculated as if the Transactions being terminated on such Early Termination Date were the sole Transactions under the Agreement), such amount shall be deemed to be zero.

 17. Claim in Bankruptcy. GS&Co. agrees that in the event of the bankruptcy of Counterparty, GS&Co. shall not have rights or assert a claim
that is senior in priority to the rights and claims available to the shareholders of the common stock of Counterparty. 
 18. Governing Law. The
Agreement, this Master Confirmation, each Supplemental Confirmation, each Trade Notification and all matters arising in connection with the Agreement, this Master Confirmation, each Supplemental Confirmation and each Trade Notification shall be
governed by, and construed and enforced in accordance with, the laws of the State of New York (without reference to its choice of laws doctrine). 
 19. Offices. 
 (a) The Office of GS&Co. for each Transaction is: One New York Plaza, New York,
New York 10004. 
 (b) The Office of Counterparty for each Transaction is: One State Street Plaza, New York, New York 10004. 
 20. Arbitration. The Agreement, this Master Confirmation, each Supplemental Confirmation and each Trade Notification are subject to the following arbitration
provisions: 
 (a) All parties to this Confirmation are giving up the right to sue each other in court, including the right to a trial
by jury, except as provided by the rules of the arbitration forum in which a claim is filed. 
 (b) Arbitration awards are generally
final and binding; a party’s ability to have a court reverse or modify an arbitration award is very limited. 
 (c) The ability
of the parties to obtain documents, witness statements and other discovery is generally more limited in arbitration than in court proceedings. 
 (d) The arbitrators do not have to explain the reason(s) for their award. 
 (e) The panel of arbitrators will typically
include a minority of arbitrators who were or are affiliated with the securities industry, unless Counterparty is a member of the organization sponsoring the arbitration facility, in which case all arbitrators may be affiliated with the securities
industry. 
 (f) The rules of some arbitration forums may impose time limits for bringing a claim in arbitration. In some cases, a
claim that is ineligible for arbitration may be brought in court. 
 (g) The rules of the arbitration forum in which the claim is
filed, and any amendments thereto, shall be incorporated into this Confirmation. 
 Counterparty agrees that any and all controversies
that may arise between Counterparty and GS&Co., including, but not limited to, those arising out of or relating to the Agreement or any Transaction hereunder, shall be determined by arbitration conducted before The New York Stock Exchange, Inc.
(“NYSE”) or NASD Dispute Resolution (“NASD-DR”), or, if the NYSE and NASD-DR decline to hear the matter, before the American Arbitration Association, in accordance with their arbitration rules then in force. The award of the
arbitrator shall be final, and judgment upon the award rendered may be entered in any court, state or federal, having jurisdiction. 
  

 13 

 No person shall bring a putative or certified class action to arbitration, nor seek to enforce any
pre-dispute arbitration agreement against any person who has initiated in court a putative class action or who is a member of a putative class who has not opted out of the class with respect to any claims encompassed by the putative class action
until: (i) the class certification is denied; (ii) the class is decertified; or (iii) Counterparty is excluded from the class by the court. 
 Such forbearance to enforce an agreement to arbitrate shall not constitute a waiver of any rights under this Confirmation except to the extent stated herein.” 
 21. Counterparts. This Master Confirmation may be executed in any number of counterparts, all of which shall constitute one and the same instrument, and any party
hereto may execute this Master Confirmation by signing and delivering one or more counterparts. 
  

 14 

 Counterparty hereby agrees (a) to check this Master Confirmation carefully and immediately upon
receipt so that errors or discrepancies can be promptly identified and rectified and (b) to confirm that the foregoing (in the exact form provided by GS&Co.) correctly sets forth the terms of the agreement between GS&Co. and
Counterparty with respect to any particular Transaction to which this Master Confirmation relates, by manually signing this Master Confirmation or this page hereof as evidence of agreement to such terms and providing the other information requested
herein and immediately returning an executed copy to Equity Derivatives Documentation Department, Facsimile No. 212-428-1980/83. 
  
  
  

			
	 Yours faithfully,
  
 GOLDMAN, SACHS & CO.

		
	 By:
	 	/DAVID GOLDENBERG/
		 	Authorized Signatory

 Agreed and accepted by: 
 AMBAC FINANCIAL GROUP, INC. 
  

			
	 By:
	 	/DAVID TRICK/
		 	Name: David Trick
		 	Title: Managing Director

  

 15 

 SCHEDULE A  
 SUPPLEMENTAL CONFIRMATION 
  

			
	To:	  	 Ambac Financial Group, Inc.
 One State Street
Plaza
 New York, New York 10004

		
	From:	  	Goldman, Sachs & Co.
		
	Subject:	  	Capped Accelerated Stock Buyback
		
	Ref. No:	  	[Insert Reference No.]
		
	Date:	  	[                    ], 2007

  

 The purpose of this Supplemental Confirmation is to confirm the terms and conditions of the Transaction entered into between Goldman, Sachs & Co. (“GS&Co.”) and Ambac Financial Group,
Inc. (“Counterparty”) (together, the “Contracting Parties”) on the Trade Date specified below. This Supplemental Confirmation is a binding contract between GS&Co. and Counterparty as of the relevant Trade Date
for the Transaction referenced below. 
 1. This Supplemental Confirmation supplements, forms part of, and is subject to the Master Confirmation dated as of
February 7, 2007 (the “Master Confirmation”) between the Contracting Parties, as amended and supplemented from time to time. All provisions contained in the Master Confirmation govern this Supplemental Confirmation except as
expressly modified below. 
  

	2.	The terms of the Transaction to which this Supplemental Confirmation relates are as follows: 

  

	 Trade Date: 
	 [            ], 2007 

  

	 Forward Price Adjustment Amount: 
	 [            ]% of the Hedge Period Reference Price 

  

	 Hedge Completion Date: 
	 As set forth in the Trade Notification, but in no event later than [            ].

  

	 Scheduled Termination Date: 
	 As set forth in the Trade Notification, to be the date that follows the Hedge Completion Date by
[            ]. 

  

	 First Acceleration Date: 
	 As set forth in the Trade Notification, to be the date that follows the Hedge Completion Date by
[            ]. 

  

	 Prepayment Amount: 
	 USD[            ] 

  

	 Counterparty Additional Payment Amount: 
	 USD[            ] 

  

	 Initial Shares: 
	 [            ] 

  

	 Minimum Shares: 
	 As set forth in the Trade Notification, to be a number of Shares equal to (a) the Prepayment Amount divided by
(b) [            ]% of the Hedge Period Reference Price. 

  

	 Ordinary Dividend Amount: 
	 For any calendar quarter, USD[            ] 

  

 3. Counterparty represents and warrants to GS&Co. that neither it nor any “affiliated purchaser” (as
defined in Rule 10b-18 under the Exchange Act) has made any purchases of blocks pursuant to the proviso in Rule 10b-18(b)(4) under the Exchange Act during the four full calendar weeks immediately preceding the Trade Date. 
 4. This Supplemental Confirmation may be executed in any number of counterparts, all of which shall constitute one and the same instrument, and any party hereto may
execute this Supplemental Confirmation by signing and delivering one or more counterparts. 
 Counterparty hereby agrees (a) to check
this Supplemental Confirmation carefully and immediately upon receipt so that errors or discrepancies can be promptly identified and rectified and (b) to confirm that the foregoing (in the exact form provided by GS&Co.) correctly sets forth
the terms of the agreement between GS&Co. and Counterparty with respect to this Transaction, by manually signing this Supplemental Confirmation or this page hereof as evidence of agreement to such terms and providing the other information
requested herein and immediately returning an executed copy to Equity Derivatives Documentation Department, facsimile No. 212-428-1980/83. 
  

			
	 Yours sincerely,
  
 GOLDMAN, SACHS & CO.

		
	By:	 	  
		 	Authorized Signatory

 Agreed and accepted by: 
 AMBAC FINANCIAL GROUP, INC. 

			
		
	By:	 	  
		 	 Name:

		 	 Title:

 SCHEDULE B 
 TRADE NOTIFICATION 
  

			
	To:	  	 Ambac Financial Group, Inc.
 One State Street
Plaza
 New York, New York 10004

		
	From:	  	Goldman, Sachs & Co.
		
	Subject:	  	Capped Accelerated Stock Buyback
		
	Ref. No:	  	[Insert Reference No.]
		
	Date:	  	[Insert Date]

  

 The purpose of this Trade Notification is to notify you of certain terms in the Transaction entered into between Goldman, Sachs & Co. (“GS&Co.”) and Ambac Financial Group, Inc.
(“Counterparty”) (together, the “Contracting Parties”) on the Trade Date specified below. 
 This Trade
Notification supplements, forms part of, and is subject to the Supplemental Confirmation dated as of [            ], 2007 (the “Supplemental Confirmation”) between the
Contracting Parties, as amended and supplemented from time to time. The Supplemental Confirmation is subject to the Master Confirmation dated as of February 7, 2007 (the “Master Confirmation”) between the Contracting Parties,
as amended and supplemented from time to time. All provisions contained in the Master Confirmation and the Supplemental Confirmation govern this Trade Notification except as expressly modified below. 
  

	 Trade Date: 
	 [            ], 2007 

  

	 Hedge Completion Date: 
	 [            ] 

  

	 Scheduled Termination Date: 
	 [            ] 

  

	 First Acceleration Date: 
	 [            ] 

  

	 Hedge Period Reference Price: 
	 USD[            ] 

  

	 Minimum Shares: 
	 [            ] 

  

			
	 Yours sincerely,
  
 GOLDMAN, SACHS & CO.

		
	By:	 	  
		 	Authorized SignatorySupplemental Confirmation of Capped Accelerated Stock Buyback dated 2/7/2007

 Exhibit 10.38 
 SUPPLEMENTAL CONFIRMATION 
  

																	
	 To:
	 	 Ambac Financial Group, Inc.
 One State Street
Plaza
 New York, New York 10004
	 		 		 		 		 		 		 	
									
	 From:
	 	Goldman, Sachs & Co.	 		 		 		 		 		 		 	
									
	 Subject:
	 	Capped Accelerated Stock Buyback	 		 		 		 		 		 		 	
									
	 Ref. No:
	 	[                ]	 		 		 		 		 		 		 	
									
	 Date:
	 	February 7, 2007	 		 		 		 		 		 		 	

  

 The purpose of this Supplemental Confirmation is to confirm the terms and conditions of the Transaction entered into between Goldman, Sachs & Co. (“GS&Co.”) and Ambac Financial Group,
Inc. (“Counterparty”) (together, the “Contracting Parties”) on the Trade Date specified below. This Supplemental Confirmation is a binding contract between GS&Co. and Counterparty as of the relevant Trade Date
for the Transaction referenced below. 
 1. This Supplemental Confirmation supplements, forms part of, and is subject to the Master Confirmation dated as of
February 7, 2007 (the “Master Confirmation”) between the Contracting Parties, as amended and supplemented from time to time. All provisions contained in the Master Confirmation govern this Supplemental Confirmation except as
expressly modified below. 
 2. The terms of the Transaction to which this Supplemental Confirmation relates are as follows: 
  

	 Trade Date: 
	 February 7, 2007 

  

	 Prepayment Date: 
	 Three (3) Exchange Business Days following the Trade Date; provided that if the closing of the offering and sale of
Counterparty’s USD400,000,000 Directly-Issued Subordinated Capital Securities with a scheduled maturity date of February 15, 2037 pursuant to the Underwriting Agreement dated as of the Trade Date between Counterparty and the underwriters
named therein does not occur on such date, the Prepayment Date shall be the earlier of the date such closing does occur and six (6) Exchange Business Days following the Trade Date. 

  

	 Forward Price Adjustment Amount: 
	 0.115% of the Hedge Period Reference Price 

  

	 Hedge Completion Date: 
	 As set forth in the Trade Notification, but in no event later than the date that follows the Trade Date by four weeks.

  

	 Scheduled Termination Date: 
	 As set forth in the Trade Notification, to be the date that follows the Hedge Completion Date by four months. 

  

	 First Acceleration Date: 
	 As set forth in the Trade Notification, to be the date that follows the Hedge Completion Date by one month. 

	 Prepayment Amount: 
	 USD400,000,000 

  

	 Counterparty Additional Payment Amount: 
	 USD0.00 

  

	 Initial Shares: 
	 2,982,442 

  

	 Minimum Shares: 
	 As set forth in the Trade Notification, to be a number of Shares equal to (a) the Prepayment Amount divided by (b) 104.5% of the
Hedge Period Reference Price. 

  

	 Ordinary Dividend Amount: 
	 For any calendar quarter, USD0.18 

 3. Counterparty represents and warrants to GS&Co. that neither it nor any “affiliated purchaser” (as defined in Rule 10b-18 under the Exchange Act) has made any purchases of blocks pursuant to the proviso in Rule 10b-18(b)(4)
under the Exchange Act during the four full calendar weeks immediately preceding the Trade Date. 
 4. This Supplemental Confirmation may be executed in any
number of counterparts, all of which shall constitute one and the same instrument, and any party hereto may execute this Supplemental Confirmation by signing and delivering one or more counterparts. 

 Counterparty hereby agrees (a) to check this Supplemental Confirmation carefully and immediately
upon receipt so that errors or discrepancies can be promptly identified and rectified and (b) to confirm that the foregoing (in the exact form provided by GS&Co.) correctly sets forth the terms of the agreement between GS&Co. and
Counterparty with respect to this Transaction, by manually signing this Supplemental Confirmation or this page hereof as evidence of agreement to such terms and providing the other information requested herein and immediately returning an executed
copy to Equity Derivatives Documentation Department, facsimile No. 212-428-1980/83. 
  

			
	Yours sincerely,
	
	GOLDMAN, SACHS & CO.
		
	 By:
	 	    /David Goldenberg/
		 	Authorized Signatory

 Agreed and accepted by: 
  

			
	AMBAC FINANCIAL GROUP, INC.
		
	 By:
	 	 /David Trick/        

		 	 Name: David Trick
 Title: Managing
Director

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