Document:

EX-4.9

 Exhibit 4.9 
 ELECTION AND AMENDMENT AGREEMENT 
 KAYAK SOFTWARE CORPORATION

 KAYAK Software Corporation, a Delaware corporation (the “Corporation”), and the undersigned stockholders
of the Corporation hereby enter into this Election and Amendment Agreement as of April 19, 2012 (the “Effective Date”). 
 Whereas, the undersigned stockholders include: (a) (i) the Requisite Holders, as such term is defined in the Corporation’s Amended and Restated Certificate of Incorporation, as
amended (the “Certificate of Incorporation”), (ii) the holders of at least 662/3% of the Corporation’s Series D Convertible Preferred Stock; and (iii) Daniel Stephen Hafner and/or Paul English; (b) the Requisite Investors and each of the Designators, as such terms are
defined in the Sixth Amended and Restated Stock Restriction and Co-Sale Agreement between the Corporation and the other parties thereto (the “Stock Restriction Agreement”); (c) the Requisite Investors and at least one Founder,
as such terms are defined in the Sixth Amended and Restated Investor Rights Agreement, as amended, between the Corporation and the other parties thereto (the “Investor Rights Agreement”) and (d) the Requisite Investors, the
Holders holding at least two-thirds of the Shares held by the Holders and each of the Designators, as such terms are defined in the Stockholders’ Agreement, dated as of May 6, 2010, as amended, between the Corporation and the other parties
thereto (the “Stockholders Agreement”); 
 Whereas, the Corporation, a private corporation, is
contemplating the consummation of a firm commitment underwritten initial public offering of Applicable Common Stock (as defined below) of the Corporation (the “IPO”); 

Whereas, in connection with the consummation of the IPO the Corporation may recapitalize its existing Common Stock (as defined in
the Certificate of Incorporation) into two new classes of common stock (the “Recapitalization”), namely a Class A Common Stock which shall be issued to the public (the Common Stock, or such Class A Common Stock as is
issued in the IPO, as applicable at any time, the “Applicable Common Stock”) and a Class B Common Stock into which all existing capital stock of the Corporation shall be converted prior to the closing of the IPO (the “Class
B Common Stock”); 
 Whereas, the election and agreements set forth herein are important to the IPO process and
are otherwise to the mutual benefit of the Corporation and each of the undersigned stockholders; 
 Now, therefore, in
consideration of the foregoing, the legal sufficiency of which is hereby acknowledged, the parties hereto hereby agree as follows: 
 1. Election to Convert Preferred Stock. 
 a. As used in this Election and
Amendment Agreement, the following terms have the following respective meanings: 
 i. an “Applicable
IPO” means an IPO consummated pursuant to a Registration Statement under the Securities Act of 1933, as amended, with an Effective 

 
Time on or prior to December 31, 2012 and the consummation of which has been approved by the Board of Directors of the Corporation, or by any authorized Committee thereof; 

ii. the “Closing” means the first sale of shares of Applicable Common Stock by the Corporation to the
underwriters pursuant to an Applicable IPO; and 
 iii. the “Effective Time” means with respect
to a Registration Statement, the time that the U.S. Securities and Exchange Commission declares such Registration Statement to be effective. 
 b. Pursuant to Section B.5O(1) of Article FOURTH of the Certificate of Incorporation, the undersigned stockholders hereby elect, such election to be effected immediately prior to but contingent upon the
Closing, that all outstanding shares of Convertible Preferred Stock (as defined in the Certificate of Incorporation) shall automatically convert to shares of Common Stock or, if the Recapitalization has occurred, to shares of Class B Common Stock,
in either case pursuant to the conversion procedures set forth in Section B.5O(2) of Article FOURTH of the Certificate of Incorporation as in effect at such time. 
 c. For purposes of clarity, (i) the foregoing election shall be deemed effected immediately prior to, but contingent upon, the Closing, without any further action by any party hereto, and may not be
withdrawn, conditioned or otherwise modified except as provided in Section 11 hereof and (ii) references above to Section numbers in the Certificate of Incorporation will be deemed to be automatically and appropriately adjusted if and to
the extent such Section numbers are modified by any amendment to the Certificate of Incorporation effected after the date hereof and prior to the Effective Time. 
 2. Amendment to the Stock Restriction Agreement. Pursuant to Section 14 of the Stock Restriction Agreement, Section 7 of the Stock Restriction Agreement is hereby amended to delete the
phrase “of Common Stock in which” appearing therein, and to insert the following text in lieu thereof: 
 “of
Common Stock (or other class of common stock of the Company) either (i) consummated pursuant to a Registration Statement under the Securities Act of 1933, as amended with an effective time on or prior to December 31, 2012 or
(ii) in which”. 
 3. Amendments and Waiver Relating to the Investor Rights Agreement. Pursuant to
Section 15(d) of the Investor Rights Agreement, the parties hereto hereby: 
  

	 	a.	amend the Investor Rights Agreement to delete the definition of “Common Stock” appearing in Section 1 therein and to insert, in lieu thereof, the
following: ““Common Stock” shall mean the Common Stock, $.001 par value, of the Company, as constituted as of the date of this Agreement; provided that if the Company has thereafter recapitalized and converted such Common Stock
into a class of common stock, then “Common Stock” shall mean such class of common stock and/or any other class of common stock into which such class is convertible, as the context may require.” 

 

	 	b.	 amend the Investor Rights Agreement to delete the definition of “Qualified Public Offering” appearing in Section 1 therein and to
insert, in lieu thereof, the following: ““Qualified Public Offering” shall mean a firm commitment underwritten public 

  
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offering of Common Stock which either (i) is consummated pursuant to a Registration Statement under the Securities Act of 1933, as amended with an effective time on or prior to
December 31, 2012 or (ii) results in aggregate gross proceeds to the Company equal to or in excess of $25,000,000 with a price per share paid by the public for such shares equal to or in excess of $31.09 (such price subject to
equitable adjustment in the event of any stock split, stock dividend, combination, reorganization, reclassification or other similar event occurring after March 22, 2010).” 

 

	 	c.	waive the applicability of Section 12 of the Investor Rights Agreement to an Applicable IPO, to any of the securities issuances contemplated under Section 6
hereof, and to all other agreements and transactions contemplated in this Election and Amendment Agreement. 

 4.
Amendment to the Stockholders Agreement. Pursuant to Section 18 of the Stockholders’ Agreement, Section 10 of the Stockholders’ Agreement is hereby amended to delete such Section in its entirety and to insert, in lieu
thereof, the following: 
 “10. Termination. This Agreement, and the respective rights and obligations of the parties
hereto, shall terminate upon the completion of a firm commitment underwritten public offering of Common Stock (or other class of common stock of the Company) which either (i) is consummated pursuant to a Registration Statement under the
Securities Act of 1933, as amended with an effective time on or prior to December 31, 2012 or (ii) results in aggregate gross proceeds to the Company equal to or in excess of $25,000,000 with a price per share paid by the public for
such shares equal or in excess of $31.09 per share (such price subject to equitable adjustment in the event of any stock split, stock dividend, combination, reorganization, reclassification or other similar event occurring after March 22, 2010)
(a “Qualified Public Offering”); provided, however, that (x) Sections 1 through 3 shall terminate on the earlier of (i) the completion of a Qualified Public Offering and (ii) ten (10) years after
the date hereof, (y) Section 8 shall terminate pursuant to the terms as set forth therein and (z) Section 9(a) shall terminate upon the completion of a firm commitment underwritten public offering of Common Stock by the
Company.” 
 5. Amendment to Certificate of Incorporation. Each of the undersigned stockholders hereby consent, in
accordance with Section 228 of the Delaware General Corporation Law, to the following actions by written consent and without a meeting, which actions and resolutions shall have the same force and effect as if duly adopted at a special meeting
duly called and held at which a quorum was present and acting throughout: 
  

	 	a.	That the Amendment to the Amended and Restated Certificate of Incorporation of the Corporation (the “Charter Amendment”), substantially in the form
attached hereto as Exhibit A, be, and hereby is, approved; 

  

	 	b.	That the appropriate officers of the Corporation be, and each of them acting singly hereby is, authorized to execute the Charter Amendment; and that, the Corporation is
hereby authorized to file the Charter Amendment with the Secretary of State of the State of Delaware; and 

  
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	 	c.	That at any time prior to the effectiveness of the filing of the Charter Amendment with the Secretary of State of the State of Delaware, notwithstanding authorization
of the Charter Amendment by the stockholders of the Corporation, the Board of Directors of the Corporation, in its discretion, may abandon and not file such Charter Amendment without further action by the stockholders of the Corporation.

 6. Additional Consideration to Certain Holders of Series D Convertible Preferred Stock. 

 

	 	a.	In further consideration for the elections and agreements set forth herein by the Eligible Series D Holders (as defined below), the Corporation agrees to sell to each
Eligible Series D Holder, upon such Eligible Series D Holder’s valid Election (as defined below), such number of shares of Applicable Common Stock as is determined pursuant to the further provisions of this Section 6; provided that each of
the following holders of Series D Convertible Preferred Stock hereby acknowledge and agree that, notwithstanding their execution of this Election and Amendment Agreement on or prior to May 3, 2012, they shall not be deemed Eligible Series D
Holders solely for the purposes of this Section 6.a and the following Section 6.b, and accordingly shall not be eligible to make an Election nor to purchase any Election Shares: 

 

	
	 Accel London II L.P.

	 Accel London Investors 2006 L.P.

	 GC Entrepreneurs Fund II, L.P.

	 GC Entrepreneurs Fund III, L.P.

	 GC Entrepreneurs Fund V, LP

	 General Catalyst Group II, L.P.

	 General Catalyst Group III, L.P.

	 General Catalyst Group V Supplemental, LP

	 General Catalyst Group V, LP

	 Sequoia Capital Growth Fund III

	 Sequoia Capital Growth III Principals Fund

	 Sequoia Capital Growth Partners III

  

	 	b.	 An “Election” may be made by an Eligible Series D Holder solely upon the terms and conditions set forth in this Section 6.b: such
Eligible Series D Holder must deliver to the Corporation during the Election Period a written notice specifying that such Eligible Series D Holder elects to purchase from the Corporation either all of such Eligible Series D Holder’s Election
Shares or such lesser number of whole Election Shares as is specified therein by such Eligible Series D Holder and, within seven (7) Business Days of the Closing, the payment of the Per Share

  
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Price multiplied by the number of Election Shares specified in such written notice, by wire transfer of immediately available funds pursuant to the wiring instructions of the Corporation attached
hereto as Exhibit B. A written Election notice must be delivered by one of the following methods, and will be deemed delivered solely upon receipt thereof by the Corporation: (a) by-hand delivery to the Chief Financial Officer of the
Corporation (b) by a recognized overnight courier service, with certification of receipt requested, to the Chief Financial Officer of the Corporation at KAYAK Software Corporation, 55 North Water Street, Suite 1, Norwalk CT 06854 or (c) by
email to each of mreiter@kayak.com and kklein@kayak.com. The closing of the purchase of Election Shares by an Eligible Series D Holder pursuant to a properly made Election shall occur upon timely receipt of the purchase price by the Corporation and,
upon receipt of such payment, the Corporation shall issue to such Eligible Series D Holder the Election Shares paid for as evidenced by a stock certificate, with appropriate legends, promptly after such closing. The Corporation hereby expressly
confirms, represents and warrants that the elections and agreements set forth herein by the Eligible Series D Holders and the further cash consideration specified above collectively constitute due and valid consideration in respect of any such
issuance of Election Shares, and that each such share of Applicable Common Stock shall, upon issuance, be validly issued, fully paid and non-assessable. 

  

	 	c.	In the event of a Closing of an Applicable IPO in which the Per Share Price is less than $27.00 (such price subject to equitable adjustment in the event of any
stock split, stock dividend, combination, reorganization, reclassification or other similar event occurring after the date hereof), then in further consideration for the elections and agreements set forth herein by the Eligible Series D Holders, and
without the requirement of any cash payment or any further action by the Eligible Series D Holders, the Corporation agrees to issue to each Eligible Series D Holder (including any Eligible Series D Holder listed in 6.a), within five
(5) Business Days after the Closing, the number of True-Up Shares applicable to such Eligible Series D Holder as evidenced by a stock certificate with appropriate legends. The Corporation hereby expressly confirms, represents and warrants that
the foregoing specified consideration constitutes due and valid consideration in respect of any such issuance of True-Up Shares, and that each such share of Applicable Common Stock shall, upon issuance, be validly issued, fully paid and
non-assessable. 

  

	 	d.	It is expressly understood and agreed that: (i) an Election may only be made during the Election Period, if any; (ii) an Election Period may never occur; and
(iii) the Corporation makes no representation or covenant that an Applicable IPO will be consummated. 

  

	 	e.	 The Corporation shall, not later than two calendar days after the Closing of an Applicable IPO in which the Per Share Price is less than $31.09
(such price subject to equitable adjustment in the event of any stock split, stock dividend, combination, reorganization, reclassification or other similar event occurring after the date hereof), provide by written notice to each Eligible Series D
Holder a copy of the final Exhibit C hereto, reflecting any exercise of the Series D Convertible Preferred Stock warrant held by Gold Hill Venture Lending 03, L.P. Such written

  
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notice shall be provided to each Eligible Series D Holder by email to the address specified by such Eligible Series D Holder on Exhibit C hereto at the time of such stockholder’s execution
hereof; provided that if any Eligible Series D Holder does not provide an email address pursuant to this sentence, the Corporation shall provide such notice to such stockholder by US Mail at the address for such stockholder set forth in the Series D
Convertible Preferred Stock Purchase Agreement dated December 20, 2007. 
  

	 	f.	As used in this Section 6, the following terms have the following meanings: 

i. “Business Day” means any day on which national banking institutions in the State of New York are open
to the public for conducting business and are not required to close. 
 ii. “Election Period”
means the period, if any, commencing the day of the Closing in which the Corporation and the underwriters establish a final Per Share Price which is less than $31.09, and ending at 5:00 p.m., East Coast time, on the fifth Business Day
following such date. Upon request at or after any such Closing, the Corporation will confirm the date of such Closing and the date upon which the Election Period expires. 

iii. “Election Shares” means, with respect to any Eligible Series D Holder, a number of shares of
Applicable Common Stock calculated as follows: (i) dividing Twenty Million Dollars ($20,000,000) by the Per Share Price, and then (ii) multiplying the number determined in clause (i) by a fraction, the numerator of which is the number
of outstanding shares of Series D Convertible Preferred Stock registered in the name of such Eligible Series D Holder at the close of business on May 3, 2012, and the denominator of which is the total number of shares of Series D Convertible
Preferred Stock outstanding at the close of business on May 3, 2012, and finally (iii) rounding the aggregate number determined in clause (ii) up or down, as applicable, to the nearest whole number of shares; 

iv. “Eligible Series D Holder” means each holder of Series D Convertible Preferred Stock of the
Corporation that has executed and delivered to the Corporation this Election and Amendment Agreement on or prior to May 3, 2012. 
 v. “Per Share Price” means the final price per share to the public in the Applicable IPO. 
 vi. “True-Up Shares” means, with respect to any Eligible Series D Holder a number of shares of Applicable Common Stock calculated as follows: (i) determining the amount, if any, by
which $27.00 (such price subject to equitable adjustment in the event of any stock split, stock dividend, combination, reorganization, reclassification or other similar event occurring after the date hereof) exceeds the Per Share Price and then
(ii) dividing such excess amount determined in clause (i) by the Per Share Price, and then (iii) multiplying the amount determined in clause (ii) by the number of outstanding shares of Series D Convertible Preferred Stock
registered in the name of such Eligible Series D Holder at the close of business on May 3, 2012 and finally (iv) rounding the aggregate number determined in clause (iii) up or down, as applicable, to the nearest whole number of
shares. 

  
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 7. Certain Representations and Warranties by the Stockholders. Each of the
undersigned stockholders, severally and not jointly, represents and warrants that: 
  

	 	a.	If such stockholder is an Eligible Series D Holder, then (i) it is an “accredited investor” within the meaning of Rule 501 under the Securities Act
of 1933, as amended (the “Securities Act”); (ii) it will acquire the Applicable Common Stock to be acquired by it hereunder for its own account and that such stock is being and will be acquired by it for the purpose of
investment and not with a view to distribution or resale thereof; (iii) it understands and agrees that, until registered under the Securities Act or transferred pursuant to the provisions of Rule 144 under the Securities Act, all certificates
evidencing any of the Applicable Common Stock purchased hereunder shall bear a legend, prominently stamped or printed thereon, to the effect that such securities may not be sold other than pursuant to a registered offering or an applicable
registration exemption under the Securities Act; and (iv) at the time of execution hereof and through the close of business on May 3, 2012, such Eligible Series D Holder is the owner of the number of shares of Series D Convertible
Preferred Stock set forth opposite such stockholder’s name on Exhibit C hereto; 

  

	 	b.	The execution, delivery and performance by such stockholder of this Election and Amendment Agreement has been duly authorized by all requisite corporate, limited
liability, partnership or other action, as applicable, of such stockholder. Such stockholder has duly authorized, executed and delivered this Election and Amendment Agreement and this Election and Amendment Agreement constitutes the valid and
binding obligation of such stockholder enforceable in accordance with its terms; and 

  

	 	c.	None of (i) the execution and delivery of this Election and Amendment Agreement, (ii) the consummation of the transactions, elections and consents
contemplated by this Election and Amendment Agreement, nor (iii) the purchase (or receipt) of Applicable Common Stock hereunder by such stockholder, has constituted or resulted in or will constitute or result in (A) a default under or
violation of any term or provision of any agreement or arrangement to which such stockholder is a party or by which such stockholder is bound, (B) a default under or violation of such stockholder’s organizational and/or operating documents
or (C) violate any applicable law, statute, rules or regulations. 

 8. Certain Representations and
Warranties by the Corporation. The Corporation represents and warrants that: 
  

	 	a.	The execution, delivery and performance by the Corporation of this Election and Amendment Agreement has been duly authorized by all requisite corporate action of the
Company, including any required stockholder approval. The Corporation has duly authorized, executed and delivered this Election and Amendment Agreement and this Election and Amendment Agreement constitutes the valid and binding obligation of the
Corporation enforceable in accordance with its terms; and 

  
 7 

	 	b.	Subject to the accuracy of the representations and warranties set forth in Section 7.a, none of (i) the execution and delivery of this Election and Amendment
Agreement, (ii) the consummation of the transactions contemplated by this Election and Amendment Agreement, nor (iii) the purchase (or receipt) of Applicable Common Stock hereunder by an Eligible Series D Holder, has constituted or
resulted in or will constitute or result in (A) a default under or violation of any term or provision of any agreement or arrangement to which the Corporation is a party or by which the Corporation is bound, (B) a default under or
violation of the Corporation’s Certificate of Incorporation or By-laws or (C) violate any applicable law, statute, rules or regulations. 

 9. Lock-Up Acknowledgement. Each Eligible Series D Holder hereby affirms and agrees that any shares of Applicable Common Stock that it purchases and/or receives hereunder are bound by the
restrictions set forth in the Lock-Up Letter agreement executed by such Eligible Series D Holder in favor of Morgan Stanley & Co. Incorporated and Deutsche Bank Securities Inc. 

10. Counterparts. This Election and Amendment Agreement may be executed in counterparts. For purposes of clarity, it is understood
and agreed that (i) one or more stockholders listed on the signature pages hereof may not execute this Election and Amendment Agreement and (ii) notwithstanding the foregoing, this Election and Amendment Agreement shall be effective as to
each signatory hereto upon such signatory’s execution hereof. 
 11. Amendments, Waivers, etc.
No provision of this Election and Amendment Agreement may be amended, waived, terminated, withdrawn or otherwise modified except pursuant to, and any provision of this Election and Amendment Agreement may be amended, waived, terminated, withdrawn or
otherwise modified solely by, a written consent executed by the (i) Corporation, (ii) holders of at least
662/3% of the Corporation’s Series D Convertible
Preferred Stock and (iii) the Requisite Investors; provided that the Corporation may update Exhibit C to reflect any exercise of the Series D Convertible Preferred Stock warrant held by Gold Hill Venture Lending 03, L.P. The Corporation may not
assign any of its rights or obligations hereunder without the prior written consent of (i) holders of at least 80% of the Corporation’s Series D Convertible Preferred Stock and (ii) the Requisite Investors; none of the undersigned
stockholders may assign any of its rights or obligations hereunder without the prior written consent of the Corporation. 
 12.
Governing Law. This Election and Amendment Agreement shall be construed and enforced in accordance with and governed by the laws of the General Corporation Law of the State of Delaware as to matters within the scope thereof, and as to all
other matters shall be governed by and construed in accordance with the internal laws of the Commonwealth of Massachusetts, without regard to its principles of conflicts of laws. 

13. Expenses. Each party shall bear its own expenses and legal fees in connection with the execution of this Election and
Amendment Agreement. If any action at law or in equity is necessary to enforce or interpret the terms of this Election and Amendment Agreement, the prevailing party shall be entitled to reasonable attorneys’ fees, costs and disbursements in
addition to any other relief to which such party may be entitled. 

  
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 14. Survival. All representations and warranties made as set forth in this Election
and Amendment Agreement shall survive the execution of this Election and Amendment Agreement and the consummation of the transactions contemplated herein. 
 In witness whereof, the Corporation and the undersigned stockholders have executed this Election and Amendment Agreement as of the date first written above. 

[signature pages follow] 

  
 9 

			
	CORPORATION:
	
	KAYAK SOFTWARE CORPORATION
		
	By:	 	 /s/ Daniel Stephen Hafner

	Name:	 	Daniel Stephen Hafner
	Title:	 	President

 [The remainder of this page is intentionally left blank] 

 STOCKHOLDERS: 

 

					
	 /s/ Daniel Stephen Hafner
	 		 	  

	Daniel Stephen Hafner	 		 	Paul English

									
	ACCEL LONDON II L.P.	 		 	ACCEL LONDON INVESTORS 2006 L.P.
			
	By: Accel London II Associates L.P.	 		 	By: Accel London II Associates L.L.C.
	Its General Partner	 		 	Its General Partner
				
	By: Accel London II Associates L.L.C.	 		 		 	
	Its General Partner	 		 		 	
					
	By:	 	 /s/ Jonathan Biggs
	 		 	By:	 	 /s/ Jonathan Biggs

	Name:	 	Jonathan Biggs	 		 	Name:	 	Jonathan Biggs
	Title:	 	Attorney in Fact	 		 	Title:	 	Attorney in Fact

									
	GENERAL CATALYST GROUP II, L.P.	 		 	GENERAL CATALYST GROUP III, L.P.
			
	 By: General Catalyst Partners II, L.P.
 Its General Partner
	 		 	 By: General Catalyst Partners III, L.P.
 Its General Partner

			
	 By: General Catalyst GP II, LLC
 Its General Partner
	 		 	 By: General Catalyst GP III, LLC
 Its General Partner

					
	By:	 	 /s/ William J. Fitzgerald
	 		 	By:	 	 /s/ William J. Fitzgerald

	Name:	 	William J. Fitzgerald	 		 	Name:	 	William J. Fitzgerald
	Title:	 	Member and Chief Financial Officer	 		 	Title:	 	Member and Chief Financial Officer
			
	GC ENTREPRENEURS FUND II, L.P.	 		 	GC ENTREPRENEURS FUND III, L.P.
			
	 By: General Catalyst Partners II, L.P.
 Its General Partner
	 		 	 By: General Catalyst Partners III, L.P.
 Its General Partner

			
	 By: General Catalyst GP II, LLC
 Its General Partner
	 		 	 By: General Catalyst GP III, LLC
 Its General Partner

					
	By:	 	 /s/ William J. Fitzgerald
	 		 	By:	 	 /s/ William J. Fitzgerald

	Name:	 	William J. Fitzgerald	 		 	Name:	 	William J. Fitzgerald
	Title:	 	Member and Chief Financial Officer	 		 	Title:	 	Member and Chief Financial Officer
			
	GENERAL CATALYST GROUP V, L.P.	 		 	GC ENTREPRENEURS FUND V, L.P.
			
	 By: General Catalyst Partners V, L.P.
 Its General Partner
	 		 	 By: General Catalyst Partners V, L.P.
 Its General Partner

			
	 By: General Catalyst GP V, LLC
 Its General Partner
	 		 	 By: General Catalyst GP V, LLC
 Its General Partner

					
	By:	 	 /s/ William J. Fitzgerald
	 		 	By:	 	 /s/ William J. Fitzgerald

	Name:	 	William J. Fitzgerald	 		 	Name:	 	William J. Fitzgerald
	Title:	 	Member and Chief Financial Officer	 		 	Title:	 	Member and Chief Financial Officer

			
	GENERAL CATALYST GROUP V SUPPLEMENTAL, L.P.
	
	 By: General Catalyst Partners V, L.P.
 Its General Partner

	
	 By: General Catalyst GP V, LLC
 Its General Partner

		
	By:	 	 /s/ William J. Fitzgerald

	Name:	 	William J. Fitzgerald
	Title:	 	Member and Chief Financial Officer

 SEQUOIA CAPITAL XI 
 SEQUOIA TECHNOLOGY PARTNERS XI 
 SEQUOIA CAPITAL XI PRINCIPALS FUND 

			
	 By: SC XI Management, LLC
 A Delaware Limited Liability Company
 General Partner of Each

		
	By:	 	 /s/ Michael Moritz

	Name:	 	Michael Moritz
	Title:	 	Managing Member

			
	
	SEQUOIA CAPITAL GROWTH FUND III
	SEQUOIA CAPITAL GROWTH PARTNERS III
	SEQUOIA CAPITAL GROWTH III PRINCIPALS FUND

			
		
	By:	 	SCGF III Management, LLC
		 	A Delaware Limited Liability Company
		 	General Partner of Each
		
	By:	 	 /s/ Michael Moritz

	Name:	 	Michael Moritz
	Title:	 	Managing Member

	
	TRIDENT CAPITAL FUND-V, L.P
	TRIDENT CAPITAL FUND-V AFFILIATES FUND, L.P.
	TRIDENT CAPITAL FUND-V AFFILIATES FUND (Q), L.P.
	TRIDENT CAPITAL FUND-V PRINCIPALS FUND, L.P.
	TRIDENT CAPITAL PARALLEL FUND-V, C.V.
	
	 Executed on behalf of the foregoing funds
 by the undersigned, as an authorized signatory
 of the respective general partner of each such
fund:

  

	
	  

	    (signature)
	
	  
	    (print name)

									
	NORWEST VENTURE PARTNERS VII-A, LP	  		  	NORWEST VENTURE PARTNERS X, LP
			
	By: Itasca VC Partners VII-A, LLC	  		  	By: Genesis VC Partners X, LLC
	Its General Partner	  		  	Its General Partner
					
	By:	  	  
	  		  	By:	  	  

	Name:	  	  
	  		  	Name:	  	  

	Title:	  	  
	  		  	Title:	  	  

			
	OAK INVESTMENT PARTNERS XII, LIMITED PARTNERSHIP

			
	
	By: Oak Associates XII, LLC, its General Partner
		
	By:	 	 /s/ Iftikar A. Ahmed

	Name:	 	Iftikar A. Ahmed
	Title:	 	Managing Member

			
	TENAYA CAPITAL V, L.P.
		
	By:	 	Tenaya Capital V GP, L.P., its General Partner
		
	By:	 	Tenaya Capital V GP, LLC, its General Partner
		
	By:	 	  

		
	Name:	 	  

		
	Title:	 	  

	
	TENAYA CAPITAL V-P, L.P.
		
	By:	 	Tenaya Capital V GP, L.P., its General Partner
		
	By:	 	Tenaya Capital V GP, LLC, its General Partner
		
	By:	 	  

		
	Name:	 	  

		
	Title:	 	  

	
	TENAYA CAPITAL B, LP
		
	By:	 	  

		
	By:	 	  

		
	By:	 	  

		
	Name:	 	  

		
	Title:	 	  

			
	GOLD HILL VENTURE LENDING 03, L.P.
		
	By:	 	  

	Name:	 	
	Title:	 	

	
	  

	Matthias Zahn
	
	  

	Wolfgang Heigl
	
	  

	Andreas Stegmann
	
	  

	Pierre Jacoby-Schrade
	
	  

	Christian Saller

 Exhibit A 
 Charter Amendment 
 EIGHTH AMENDMENT TO 

AMENDED AND RESTATED 
 CERTIFICATE OF INCORPORATION 
 OF 

KAYAK SOFTWARE CORPORATION 
 (Pursuant to Sections 242 of the 
 General Corporation Law of the State of Delaware)

 KAYAK Software Corporation, a corporation organized and existing under and by virtue of the provisions of the General
Corporation Law of the State of Delaware (the “Corporation”), 
 DOES HEREBY CERTIFY: 

1) That the name of this corporation is KAYAK Software Corporation, and that this corporation was originally incorporated pursuant
to the General Corporation Law of the State of Delaware (the “DGCL”) on January 14, 2004 under the name Travel Search Company, Inc.; 
 2) That the Board of Directors duly adopted resolutions proposing to amend the Amended and Restated Certificate of Incorporation of this corporation, declaring said amendment to be advisable and in
the best interests of this corporation and its stockholders, and authorizing the appropriate officers of this corporation to solicit the consent of the stockholders therefor; 
 3) That the Board of Directors of the Corporation directed that such amendment be submitted to the stockholders of the Corporation for their consent and approval and, in lieu of a meeting and vote
of stockholders, the stockholders have given written consent to said amendment in accordance with the provisions of Section 228 of the DGCL. 
 4) That said amendment was duly adopted in accordance with the provisions of Sections 242 and 228 of the DGCL; which resolutions and consent setting forth the proposed amendment and restatement is
as follows: 
 RESOLVED, that the Amended and Restated Certificate of Incorporation of this Corporation, as amended, be
further amended to delete the word “and” appearing immediately 

 
before clause (ix) in subparagraph B.5E of Article FOURTH and to insert the following new clause (x) in such subparagraph B.5E of Article FOURTH: 

“; and (x) shares of Common Stock issued, or deemed issued, pursuant to (A) a firm commitment underwritten public offering
consummated pursuant to a Registration Statement under the Securities Act of 1933, as amended, with an effective time on or prior to December 31, 2012 and/or (B) pursuant to the terms of that certain Election and Amendment Agreement, dated
on or about April 19, 2012, by and between the Corporation and the other parties thereto”. 
 [The remainder
of this page is intentionally left blank. Signature page follows.] 

 IN WITNESS WHEREOF this Eighth Amendment to Amended and Restated
Certificate of Incorporation has been executed by the undersigned this 18th day of April, 2012. 
  

			
	KAYAK SOFTWARE CORPORATION
	
	  

	Name:	 	Daniel Stephen Hafner
	Title:	 	Chief Executive Officer

 Exhibit B 
 Wire Instructions 
 Remit payment by wire as follows: 

Silicon Valley Bank 
 3003 Tasman Drive

 Santa Clara, CA 95054 

Routing & Transit #: 
 Swift Code:

 Beneficiary: Kayak Software Corporation 
 Beneficiary Account #: 

 Exhibit C 
 Holders of Series D Convertible Preferred Stock 
  

							
	 HOLDER
	  	Series D
Shares	 	 	 Email address (optional)

	 Accel London II L.P.
	  	 	472,567	  	 	
	 Accel London Investors 2006 L.P.
	  	 	9,890	  	 	
	 GC Entrepreneurs Fund II, L.P.
	  	 	8,770	  	 	
	 GC Entrepreneurs Fund III, L.P.
	  	 	8,423	  	 	
	 GC Entrepreneurs Fund V, LP
	  	 	29,594	  	 	
	 General Catalyst Group II, L.P.
	  	 	232,461	  	 	
	 General Catalyst Group III, L.P.
	  	 	232,808	  	 	
	 General Catalyst Group V Supplemental, LP
	  	 	945,196	  	 	
	 General Catalyst Group V, LP
	  	 	472,598	  	 	
	 Gold Hill Venture Lending 03, L.P.
	  	 	48,246 	* 	 	
	 Norwest Venture Partners VII-A, LP
	  	 	120,615	  	 	
	 Norwest Venture Partners X, LP
	  	 	120,615	  	 	
	 Oak Investment Partners XII, Limited Partnership
	  	 	2,171,058	  	 	
	 Sequoia Capital Growth Fund III
	  	 	1,816,181	  	 	
	 Sequoia Capital Growth III Principals Fund
	  	 	93,790	  	 	
	 Sequoia Capital Growth Partners III
	  	 	19,877	  	 	
	 Tenaya Capital B, LP
	  	 	241,231	  	 	
	 Tenaya Capital V, LP
	  	 	567,163	  	 	
	 Tenaya Capital V-P, LP
	  	 	156,531	  	 	
	 Trident Capital Fund-V Affiliates Fund (Q), L.P.
	  	 	1,199	  	 	

							
	 Trident Capital Fund-V Affiliates Fund, L.P.
	  	 	1,256	  	  	
	 Trident Capital Fund-V Principals Fund, L.P.
	  	 	6,255	  	  	
	 Trident Capital Fund-V, L.P.
	  	 	216,100	  	  	
	 Trident Capital Parallel Fund-V, C.V.
	  	 	16,418	  	  	

  

	*	Subject to increase to up to 110,246 shares in total, if and to the extent an outstanding warrant to purchase 62,000 shares of Series D Convertible Preferred Stock is
exercised.EX-10.66

 Exhibit 10.66 
 CONFIDENTIAL TREATMENT 
 AMADEUS PRODUCTS AND SERVICES AGREEMENT

 This Products and Services Agreement (“Agreement”) is effective as of 1st day of January, 2012 (“Effective Date”) and is made
between: 
 Amadeus IT Group, S.A., a Spanish company with principal offices at Salvador de Madariaga, 1—28027 Madrid, Spain
(“Amadeus”) including its group entities, and 
 KAYAK Software Corporation, a Delaware, U.S.A. corporation with principal
offices at 55 North Water Street, Suite 1, Norwalk, CT 06854 USA (“Kayak” or “Subscriber”); 
 (each a “Party” and
collectively the “Parties”). 
 RECITALS 
 WHEREAS, Amadeus has developed and is operating a fully automated global reservations and distribution system (the “Amadeus System”), with the ability to perform comprehensive
information, communications, and related functions; and 
 WHEREAS, Subscriber wishes to access and use the Amadeus System and
other related products and services, solely for the purposes set forth in this Agreement; 
 IT IS AGREED: 

 

	1.	DEFINITIONS 

 The following
definitions shall apply to the terms used in this Agreement: 
  

	1.1	“Affiliates” means in respect of a Party, an entity in which a party owns more than fifty percent of the voting rights. 

 

	1.2	“Agreement” means this Products and Services Agreement, and any Exhibit attached hereto, as amended or supplemented from time to time.

  

	1.3	“Amadeus Data” means all information, results, or data provided by Amadeus in the course of Subscriber’s use of the Software and/or access to the
Amadeus System. 

  

	1.4	“Amadeus Group” means the group of legal entities founded to organize, develop, operate and distribute the Amadeus System. 

 

	1.5	“Amadeus System” or “System” means the advanced computer reservation system for the travel industry developed, owned, operated and/or
distributed by Amadeus. 

  

	1.6	“Amadeus Web Services” means the Amadeus web services interface and related infrastructure, including but not limited to hardware, software and
services, made available by the Amadeus Group to Subscriber for the development of certain applications as referenced in Attachment B hereto. 

  
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 * CONFIDENTIAL TREATMENT REQUESTED. OMITTED PORTIONS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION
PURSUANT TO RULE 406 PROMULGATED UNDER THE SECURITIES ACT OF 1933, AS AMENDED. 

	1.7	“Non-Air Booking” means an individual car or hotel reservation entry, or entries, in the itinerary portion of a PNR processed / booked in the Amadeus
System which has not been cancelled, unconfirmed or unfulfilled. 

  

	1.8	“[            ]*” means the process by which search data for
[            ]* MetaPricer Queries is [            ]* sent by Amadeus to Subscriber at
[            ]*. 

  

	1.9	“Content” means provider data available to Subscriber in the Amadeus System. 

 

	1.10	“Customer Equipment” means equipment, hardware, software and any other material that is not provided by Amadeus. 

 

	1.11	“Internet User” means an individual that accesses Amadeus System at the Subscriber Sites. 

 

	1.12	“MetaPricer” means a tool that enables searching, selecting or sorting for low fare air travel options that include (i) one-way, round trip and
multiple segment trips, (ii) with travel ranging from multiple hours to multiple days, (iii) involving departure and/or arrival at single or multiple airports, and (iv) including all passenger types, as well as up to 9 passengers. Any
reference to MetaPricer includes MasterPricer. 

  

	1.13	“MetaPricer Query” means a Search submitted to MetaPricer for information including air carriers, lowest fares, and fare availability between two or
more cities or airports. MetaPricer Query will exclude: (i) test queries performed in a testing environment, (ii) queries posed to MetaPricer by Amadeus in connection with its monitoring of the MetaPricer usage, and (iii) queries that
return no Content or result in error messages that are not attributable to a Search for which there are no viable results. 

  

	1.14	“North America Domestic Query” means a MetaPricer Query with travel origin located within the United States or Canada and the destination located in
the United States or Canada. 

  

	1.15	“PNR” means passenger name record. 

  

	1.16	“Provider” means a provider of travel related services that makes its data available through the Amadeus System. 

 

	1.17	“Search” means a request from an Internet User to Subscriber for information about airfare, hotels or rental car rates. 

 

	1.18	“Software” means software and related documentation provided by Amadeus to Subscriber under this Agreement, including MetaPricer,
[            ]*, and Amadeus Web Services. 

  

	1.19	 “Split-Query” means a Search for which Subscriber submits more than one MetaPricer Query; provided that if more than 30% of Split
Queries specify more than one carrier, then the parties will discuss in good faith a revision of this definition. For the avoidance of doubt, each MetaPricer Query in a Split Query must have

  
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 * CONFIDENTIAL TREATMENT REQUESTED. OMITTED PORTIONS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION
PURSUANT TO RULE 406 PROMULGATED UNDER THE SECURITIES ACT OF 1933, AS AMENDED. 

	 	
substantially similar search parameters as those supplied by the Internet User for the underlying Search. 

 

	1.20	“Subscriber Sites” means the website Kayak.com and all of the websites and mobile applications owned, operated or powered by Subscriber.

  

	1.21	“Supplier Direct Partners” means specific hotel suppliers with whom Subscriber has direct distribution agreements. 

 

	1.22	“ Transaction” or “Central System Transaction” means a request to process data that is transmitted to the Amadeus System. Multiple
data elements transmitted to the Amadeus System in a string will be counted as one Transaction. Data elements transmitted via wizards, macros, robotics and similar means may result in multiple Transactions that are not apparent to the Amadeus System
user. However, reporting or other data consolidation seeking commands from Amadeus system will not be counted as transactions. 

  

	1.23	“Web Services Message” means a grammar describing a dialogue in XML format (request/ response) that can be used to interact with the Amadeus Platform.

  

	1.24	“Year” means each successive twelve month period from the Effective Date. 

 

	2.	TERM 

 This Agreement
shall be effective from 1st of January 2012 for a period
of five (5) years (the “Initial Term”), and will thereafter automatically renew for six (6) month periods (“Renewal Term(s)”) unless terminated by either Party with thirty (30) days written notice prior to the
expiration of the Initial Term or any Renewal Term. 
  

	3.	PRODUCTS AND SERVICES 

  

	3.1	License 

 Amadeus hereby grants to
Subscriber, subject to the terms and conditions stated herein, a limited, non-transferable and non-exclusive right to use, perform and display the Software. 
  

	3.2	Products 

  

	 	3.2.1	MetaPricer 

 For each MetaPricer Query
submitted, Amadeus will endeavour to return as many low fare air travel information results as possible; provided that Subscriber acknowledges that the maximum number of itineraries returned in response to a particular MetaPricer Query shall be
[            ]* and the maximum number of airlines listed in such results shall be [            ]* airlines. This information
will include airline code, departure time, airport code, arrival time, code share information, equipment type, fare availability, flight duration, base prices, applicable taxes and fees, and any other information required by law to be displayed to
users or mutually agreed to between the Parties. 
 The list of itineraries and fares returned by MetaPricer will be computed by Amadeus in
order to return the itineraries that are identical to the itineraries returned individually 

  
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 * CONFIDENTIAL TREATMENT REQUESTED. OMITTED PORTIONS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION
PURSUANT TO RULE 406 PROMULGATED UNDER THE SECURITIES ACT OF 1933, AS AMENDED. 

 
by the Internet web site of each Amadeus System Provider, subject to Subscriber having an agreement in place with the Provider as necessary. Amadeus will monitor the accuracy of the data returned
by MetaPricer Queries and Subscriber shall have the right to use such data to benchmark Amadeus’s accuracy against competitors and Provider websites. 
 At a regular interval period of time, Amadeus and Subscriber will meet to review and assess the quality of the data provided and discuss potential improvements. 

For each six month period of the Agreement beginning with the Effective Date, Amadeus shall allow Subscriber to conduct a number of queries per second
based on the volume projections provided by Subscriber at the beginning of each such f six (6) month period. Subscriber’s access will be limited to the numbers that it has provided. However, if Subscriber determines that it needs or wants
a higher query per second ratio, it can submit a revised projection to Amadeus. Amadeus agrees to accommodate any such revised projection unless it can demonstrate to Subscriber that a higher query per second ratio would result in a greater than
[            ]* increase in volume, in which case the parties will agree in good faith upon a timeframe within which to accommodate the increase in volume. 

 

	 	3.2.2	[            ]* 

 [            ]* 
 During these
[            ]*, Subscriber will be authorised to perform up to [            ]* MetaPricer Queries (which may be performed as
Split Queries) per month. Amadeus may restrict the times during the day at which Subscriber can send these Queries: for example peak hour of traffic might be excluded; provided, however, that such restrictions shall not exceed three consecutive
hours at any time and in aggregate shall not exceed 5 hours in any 24 hour period. 
  

	 	3.2.3	Amadeus Web Services 

 Amadeus Web
Services will be provided pursuant to the terms of the Amadeus Web Services agreement included herein as Attachment B. 
 It will be
Subscriber’s responsibility to create, support and maintain the Graphical User Interface (“GUI”), which uses the Amadeus Data provided. 
  

	3.3	Services  

  

	 	3.3.1	Maintenance and Enhancements  

 Software
maintenance is included as part of the MetaPricer fee, without additional charge. MetaPricer [            ]* will include such enhancements and updates, including industry changes, as
Amadeus shall, at no additional charge, make generally available to other customers of MetaPricer [            ]*, respectively. 

  
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 * CONFIDENTIAL TREATMENT REQUESTED. OMITTED PORTIONS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION
PURSUANT TO RULE 406 PROMULGATED UNDER THE SECURITIES ACT OF 1933, AS AMENDED. 

	 	3.3.2	Service Levels 

 Amadeus shall provide the
services in accordance with the service levels to be agreed and set out in Attachment C to this Agreement. 
  

	 	3.3.3	Additional Services 

 Subscriber may
request and Amadeus may agree, but by no means would be obliged, to perform additional services relating to MetaPricer [            ]* outside the scope of Amadeus’s obligations under
this Agreement, including but not limited to development and operations support required by Subscriber to develop or customize to Subscriber’s requirements. The provision of such services shall be governed by a Statement of Work
(“SOW”) agreed to by both Parties. Subscriber shall pay Amadeus the fees (based on Amadeus’ standard rates, as charged to its customers generally) set forth in the applicable SOW. 

 

	4.	SYSTEM ACCESS 

  

	4.1	General 

 Amadeus will grant access
to the Amadeus System via a separate Amadeus Web Services Agreement included herein as Attachment B. Subscriber will use its own or a third party software interface to connect to Amadeus System and will be solely responsible for the integration of
the interface. 
  

	4.2	System Modifications 

 Amadeus may
in its discretion modify, substitute and/or upgrade or enhance the functions and components of, and data provided through, the Amadeus System; provided that each such modification, substitution, upgrade or enhancement shall not result in any
reduction in functionality or data as compared to that available to Subscriber prior to such release, Amadeus will provide all necessary support to enable Subscriber to implement such release, and that there will be no additional charge Subscriber.

  

	4.3	Scheduled Downtime  

 Amadeus may
schedule System and Amadeus Web Services downtime for maintenance after giving prior written notice of at least 72 hours. Amadeus shall use its reasonable commercial efforts to ensure that the occurrence and duration of any such periods of downtime
shall be minimized. 
  

	4.4	Suspension of Access  

AMADEUS may suspend access to the Amadeus System without liability if: 
  

	 	(1)	Amadeus reasonably believes that an abuse or misuse of the Amadeus System is being caused, permitted or enabled by Subscriber or on Subscriber’s behalf; or

  

	 	(2)	Subscriber attempts unauthorized modifications to the System; or 

  

	 	(3)	Subscriber fails to pay Amadeus any Charges under this Agreement for more than ninety (90) days after payment is due. 

  
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PURSUANT TO RULE 406 PROMULGATED UNDER THE SECURITIES ACT OF 1933, AS AMENDED. 

 In all cases where Amadeus takes any action to suspend access above it will use best efforts to first
provide ten (10) days prior notice to Subscriber so that the System abuse/misuse or unauthorized use may be cured prior to any suspension. If Amadeus suspends access pursuant to this provision, then: (i) it will use best efforts to restore
Subscriber’s access immediately upon correction of the problem, and (ii) Subscriber shall not be liable for minimum fees for the period of the suspension. 
  

	4.5	Use Restrictions  

 Subscriber
shall take reasonable precautions to prevent unauthorized access to the Amadeus System. Further, Subscriber agrees not to use the Amadeus System for: 
  

	 	(1)	Reservation of space in anticipation of demand; 

  

	 	(2)	Improper creation or modification of records; 

  

	 	(3)	Disclosure of the systems to persons other than Subscriber employees; except for contractors or other third parties engaged by Subscriber; 

 

	 	(4)	Caching of data that is not expressly authorized by Amadeus. 

  

	 	(5)	Access via third party products (e.g. robotic tools) that are not expressly authorized and certified by Amadeus 

 

	4.6	Transaction Counts 

 Amadeus shall provide Subscriber with detailed Transaction reports, including detailed break-down and usage with respect to the preceding month by the 20th of each calendar month. Subscriber will have the right to request
any additional records upon which the Transactions were based. If Subscriber does not raise any objections with the reports within fifteen (15) business days, then Subscriber shall pay the Transaction Fees as set forth on Exhibit A, based on
the reports and invoices provided by Amadeus. In the event Subscriber determines that the Transaction reports differ by more than 5% from Subscriber’s own data, Subscriber shall notify Amadeus and the parties will defer resolution to the
Quarterly Status Meeting (as defined in Section 15.12). 
  

	5.	SCOPE OF USE 

  

	5.1	General  

 Subscriber agrees to use
the Amadeus System and the Software solely as follows 
  

	 	(a)	only for informational purposes to search, select and sort low fare air travel options. 

  
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	 	(b)	for searching, selecting and sorting for non-air travel options, as well as to facilitate Non-Air Bookings by allowing Internet Users to complete transactions directly
with Providers without leaving a Subscriber Site. 

  

	5.2	Provider Agreements 

 Amadeus will
include airlines’ airfares in MetaPricer provided that if any particular airline or travel agency requires Subscriber to have its own direct agreement with airline or travel agency in order to access the airline’s fares through the Amadeus
System, then access will be provided to that airline’s fares only if Subscriber enters into such a direct agreement. Amadeus agrees to use commercially reasonable efforts to assist Subscriber in obtaining direct agreements. Amadeus will include
search data from all Subscriber partners (airline or travel agency) [            ]* unless a particular partner requests that its data not be included
[            ]*, in which case Amadeus will notify Subscriber that particular partner has made such a request. 
 Amadeus will not be liable for the accuracy of Content available in the Amadeus System provided that any such inaccuracy is caused by the Provider and not by Amadeus. 

 

	5.3	Use of Data 

 Subscriber may use
the Amadeus Data that it obtains under this Agreement only for the purpose of providing Subscriber’s services via the Subscriber Sites, including Subscriber powered co-branded and affiliated sites (the “Authorized Use”). Amadeus
acknowledges and agrees that Subscriber’s services shall include facilitated booking functionality pursuant to which an Internet User may complete a Non-Air Booking or an air fare booking directly with a Provider without leaving the Subscriber
Sites. 
 Amadeus Data may not be published, distributed or otherwise provided outside of the Subscriber Sites, nor may it be redistributed in
any form to any person or entity (including, but not limited to, any other GDS, airline, consumer or travel agency); provided that Amadeus agrees that Amadeus Data may be used in Subscriber’s email communications to its Internet Users, such as,
for example, confirmation emails and weekly deals emails to Internet Users. 
  

	6.	INTELLECTUAL PROPERTY 

 6.1 Subscriber
hereby acknowledges that the Amadeus System and the Software are Amadeus’ proprietary information whether or not any portion thereof is or may be validly copyrighted or patented. 
 6.2 Any and all intellectual and other proprietary rights to the Amadeus System and the Software, Equipment, documentation and know-how related thereto constitutes Amadeus’ or its licensors
intellectual property. 
 6.3 Amadeus will retain ownership of all Amadeus Software, including any new versions, enhancements or modifications
as may be developed by Amadeus and made available to Subscriber. In the event Amadeus performs any additional services under Section 3.3.2, ownership of any intellectual property created pursuant to such SOW shall be as set forth in the SOW.

  
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PURSUANT TO RULE 406 PROMULGATED UNDER THE SECURITIES ACT OF 1933, AS AMENDED. 

 6.4 Subscriber shall take the same security measures to protect the Software that Subscriber uses to protect
its own confidential and proprietary information, but in no event less than the use of reasonable efforts to protect the Software from unauthorized disclosure or use. 
 6.5 The parties undertake, at their own costs, to perform all further acts and things and execute and deliver all further documents, reasonably requested by the other party, to vest in the requesting
party the full benefit of the right, title and interest expressed as being owned by the requesting party in any intellectual property pursuant to this Section 6 (including any position on ownership agreed between the parties pursuant to
Section 6.3 above in relations to any intellectual property created pursuant to any additional services) or Section 11 below. 
  

	7.	CHARGES and PAYMENT 

  

	7.1	Charges 

 The Charges are defined
in Attachment A to this Agreement. 
  

	7.2	Late Payment 

 If any undisputed
sum payable under the Agreement is not paid by the due date. Amadeus shall be entitled to charge Subscriber interest on such sum, at the rate of 2 percentage points above the three month Euribor rate effective on that value date. Such interest shall
be charged on any unpaid amounts from and including the first value date until the date of payment of the amount due. 
  

	8.	TAXES 

 8.1 Except as otherwise set forth
in this Clause, each party is responsible for and must pay any taxes for which that party is assessed in relation to the fulfilment of this Agreement. 
 8.2 Charges are exclusive of VAT which shall be chargeable to Subscriber at the then current rate if Amadeus is subject to VAT for the supply of goods or services to Subscriber. If VAT is chargeable to
Subscriber, Subscriber shall pay such VAT together with the respective Charges for the Services that have given rise to the obligation to pay VAT. 
 8.3 The parties agree to use reasonable endeavours to do everything required by the relevant VAT legislation to enable or assist the other party to claim or verify any input tax credit, set off, rebate or
refund in respect of any VAT paid or payable in connection with Services under this Agreement. 
 8.4 Should Subscriber be required under any
applicable Law to withhold or deduct any portion of the payments due to Amadeus, then the sum payable to Amadeus will be increased by the amount necessary to yield to Amadeus an amount equal to the sum it would have received had no withholdings or
deductions been made. 
  

	9.	WARRANTIES & INDEMNITIES 

  

	9.1	Warranties 

  
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PURSUANT TO RULE 406 PROMULGATED UNDER THE SECURITIES ACT OF 1933, AS AMENDED. 

 Amadeus makes no warranties under this agreement including, without limitation, any warranty or
representation with respect to any Software or any other product or service provided under or in connection with this Agreement, any express or implied warranty of merchantability or fitness for a particular purpose, accuracy and completeness of the
data derived from the system, non-infringement, or any implied warranties arising out of course of performance, course of dealing or usage of trade, or that Amadeus will make the data of any particular provider available to Subscriber on the Amadeus
System. 
  

	9.2	Indemnities 

  

	 	9.2.1	General 

  

	 	(a)	Each party shall indemnify and defend the other party and its Affiliates and its and their officers, directors, employees, agents, representatives, successors and
assignees against any and all liabilities, damages, awards, losses, costs and expenses, including court costs and reasonable attorneys’ fees (“Losses”) arising out of any claim, demand, suit or cause of action brought by a third party
(“Third Party Claim”) relating to or arising from any breach by the indemnifying party of its confidentiality obligations under Article 11 (including Losses arising from any unauthorized disclosure of Confidential Information by the
indemnifying party). 

  

	 	(b)	Amadeus shall indemnify and defend Subscriber and its Affiliates and its and their officers, directors, employees, agents representatives, successor and assignees
against any and all Losses arising out of any Third Party Claim that any use by Subscriber in accordance with this Agreement of the Software, the Amadeus System or any other materials supplied by Amadeus pursuant to this Agreement infringes any
intellectual property rights of such Third Party. 

  

	 	(c)	Subscriber shall indemnify and defend Amadeus and its Affiliates and its and their officers, directors, employees, agents, representative, successor and assignees
against any and all Losses arising out of any Third Party Claim that any use by Subscriber other than in accordance with this Agreement infringers any intellectual property rights of such Third Party. 

 

	 	9.2.2	Exclusions 

 The
Indemnitor shall have no liability under the indemnity granted above to the extent that any Third Party Claim arises as a result of: 
  

	 	(a)	modifications made by the Indemnitee or its sub-contractors; 

  

	 	(b)	the Indemnitee’s combination of the Indemnitor’s work product, software or materials with items not provided for under this Agreement;

  

	 	(c)	a breach of this Agreement by the Indemnitee; or 

  
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	 	(d)	failure of the Indemnitee immediately to use corrections or Modifications provided by the Indemnitor offering equivalent features and functionality (except where the
correction or Modification provided by the Indemnitor does not relate to such failure). 

  

	 	9.2.3	Consequences of IPR Infringement 

Amadeus may, in its sole discretion, perform one or more of the following to minimize or eliminate the disturbance to Subscriber’s
business activities, if it becomes aware of any Claim for IPR infringement under this Agreement: 
  

	 	(a)	obtain for Subscriber the right to continue using any infringing materials, equipment or software; or 

 

	 	(b)	modify the item(s) in question so that it is no longer infringing, and the relevant Indemnitee shall implement any such Modifications immediately; or

  

	 	(c)	replace such item(s) with a non-infringing replacement item without loss of functionality, and the Subscriber shall implement any such replacements immediately

 9.2.4 If any party entitled to indemnification under this section (an “Indemnified Party”) makes an
indemnification request to the other, the Indemnified Party shall permit the other party (the “Indemnifying Party”) to control the defense, disposition or settlement of the matter at its own expense; provided that the Indemnifying Party
shall not, without the consent of the Indemnified Party, enter into any settlement or agree to any disposition that imposes any conditions or obligations on the Indemnified Party (other than the payment of monies that are immediately paid by the
Indemnifying Party pursuant to the reimbursement obligations of the Indemnifying Party) or affect the rights of the Indemnified Party. Counsel selected by the Indemnifying Party shall be reasonably acceptable to the Indemnified Party. The
Indemnified Party shall notify the Indemnifying Party promptly within 10 business days after receipt of any claim or as soon thereafter as reasonably practicable, for which the Indemnifying Party is responsible and shall reasonably
cooperate with the Indemnifying Party to facilitate the defense of any such claim. An Indemnified Party shall at all times have the option to participate in any Claim through counsel of its own selection and at its own expense. 

 

	10.	LIMITATION OF LIABILITY 

 IN NO EVENT
SHALL EITHER PARTY BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL OR CONSEQUENTIAL DAMAGES OR FOR ANY DAMAGES RESULTING FROM LOSS OF USE, DATA, OPPORTUNITY OR PROFITS, WHETHER IN CONTRACT, TORT, STRICT LIABILITY OR OTHERWISE (AND WHETHER SUFFERED
BY THE PARTY, ITS AFFILIATES OR CUSTOMERS), EVEN IF SUCH PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. IN NO EVENT SHALL EITHER PARTY’S LIABILITY TO THE OTHER PARTY FOR DAMAGES IN CONNECTION WITH THIS AGREEMENT IN THE AGGREGATE
EXCEED THE AMOUNT OF FEES PAID BY KAYAK TOAMADEUS DURING THE 12 MONTHS PRECEDING THE FIRST CLAIM PURSUANT TO THIS AGREEMENT, WHETHER IN CONTRACT, TORT, STRICT LIABILITY OR OTHERWISE. THE LIMITATIONS CONTAINED IN THIS SECTION

  
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SHALL NOT APPLY TO THE PARTIES’ INDEMNIFICATION OBLIGATIONS SET FORTH IN SECTION 9, A BREACH BY EITHER PARTY OF SECTION 11 (CONFIDENTIALITY), A BREACH BY KAYAK OF SECTION 7 (CHARGES) OR
LIABILITIES FOR WILFUL MISCONDUCT, FRAUD OR DEATH OR PERSONAL INJURY. 
  

	11.	CONFIDENTIALITY 

 The Parties will not
disclose any of the terms and conditions of this Agreement, including but not limited to pricing or Incentive terms, to any third party without other Party’s written consent. Further, both Parties agree not to disclose the other Party’s
Confidential Information without written consent except as otherwise required by law (including or in connection with a public offering of shares of stock). “Confidential Information” includes the terms and conditions of this Agreement and
otherwise means information, not generally known in the relevant trade or industry, which was received by a Party (the “Receiving Party”) from the other Party (the “Disclosing Party”), and which is information relating to:
(1) trade secrets of the Disclosing Party (including, without limitation, the source code and object code of the Software); (2) existing or contemplated products, services, technology, designs, processes, formulae, computer systems,
algorithms, research or developments of the Disclosing Party; or (3) business plans, sales or marketing methods, methods of doing business, customer lists or requirements, and supplier information of the Disclosing Party. “Confidential
Information” does not include information (1) already known to the Receiving Party at the time of disclosure (unless under a pre-existing obligation of confidence); (2) that becomes publicly available (other than due to a breach by
the Receiving Party); (3) is rightfully received by the Receiving Party from a third party without an obligation of confidentiality; (4) is independently developed by the Receiving Party without reference to the Disclosing Party’s
Confidential Information, or (5) relates to data generated through the System which is disclosed by Amadeus to or as required by third parties in the normal and customary course of Amadeus’ business. Amadeus understands and acknowledges
that Kayak, in the course of its business may (i) manage, modify, maintain and update pre-existing data and information about Internet Users for use with the Amadeus System and/or Software, and (ii) generate, manage, modify, maintain and
update such additional data and information (such pre-existing data and information and such additional data and information are referred to collectively as “Kayak Data”; provided that schedule, fare and availability data used by the
Amadeus System and/or Software, the MetaPricer Queries submitted to the Amadeus System, and the responses thereto shall not constitute Kayak Data). Kayak shall retain all right, title and interest in and to all Kayak Data. In no event shall Amadeus
be permitted access to any Kayak Data containing personally identifiable information regarding Internet Users. Notwithstanding anything to the contrary herein, all such Kayak Data consisting of, without limitation, transactional or financial
information, Internet User names and addresses, passwords, registration information, and cookie information, shall be subject to Kayak’s privacy policy as set forth on the Subscriber Sites, and Kayak shall not provide any such data to Amadeus.

  

	12.	TERMINATION/EFFECT OF TERMINATION  

  

	12.1	Termination 

 In addition to any
other termination rights expressly provided for in this Agreement, this Agreement may be terminated by either Party (i) for a material breach of any term of the Agreement by the other Party, in the event that the other Party fails to cure such
breach 

  
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PURSUANT TO RULE 406 PROMULGATED UNDER THE SECURITIES ACT OF 1933, AS AMENDED. 

 
within thirty (30) days after receipt of notice; or (ii) upon notice if the other Party breaches Section 11 above and fails to cure all consequences arising from such breach within
five (5) days notice of the breach; or (iii) as otherwise expressly provided in this Agreement; or (iv) the Service Levels to be included as Attachment C are not agreed and initialled by the Parties within forty-five (45) days of
the Signature Date of the Agreement; or (iv) if the other party becomes insolvent, makes an assignment for the benefit of creditors, suffers the appointment of a receiver, a trustee, a creditors committee, or a petition in bankruptcy or seeks
reorganization, or readjustment of its debts or its dissolution or liquidation or for any other relief under any bankruptcy or insolvency law, or has entered against it a judgement or decree for its dissolution which remains undismissed or
undischarged or unbonded for a period of thirty (30) days, or if the other Party shall take any step leading to the cessation as a going concern, or ceases operations for reasons other than a strike, or (v) a Force Majeure event, or
(vi) as may be provided by applicable regulatory law. 
 Notwithstanding the foregoing, if the parties jointly develop a solution to
replace MetaPricer, the parties anticipate amending or replacing this Agreement. 
  

	12.2	Effect of Termination. 

 In the
event of termination of this Agreement, the Parties will promptly return all Confidential Information to the Disclosing Party, 
  

	13.	NOTICES 

 NOTICES AND CONSENTS
UNDER THIS AGREEMENT MUST BE IN WRITING, AND WILL BE DEEMED DELIVERED: (1) FIVE BUSINESS DAYS AFTER BEING SENT BY FIRST CLASS MAIL TO THE ADDRESS BELOW (OR IDENTIFIED ON THE FORM ATTACHED AS EXHIBIT 1); OR (2) TWO BUSINESS DAYS AFTER BEING
SENT BY WAY OF A NATIONALLY RECOGNIZED OVERNIGHT DELIVERY SERVICE TO THE ADDRESS BELOW (OR IDENTIFIED ON THE FORM ATTACHED AS EXHIBIT 1); OR (3) IMMEDIATELY UPON HAND DELIVERY OR EMAILING, IN EACH CASE TO THE PERSON IDENTIFIED BELOW.

  

			
	 To: Amadeus
  

Same address as above.
  
 Attn: Director, Leisure and Online Travel
  
 For any claims hereunder, a copy to General Counsel.
	  	 To: Kayak
  

Same address as above.
  
 Attn: Chief Commercial Officer
  

For any claims hereunder, a copy to General Counsel.

 Either Party may give written notice to the other Party of such other address(es) to which notices shall be sent, and
thereafter notices shall be sent to such new or additional addresses. 
  

	14.	ARBITRATION  

 14.1 Any question
concerning the existence, validity, or termination of this Agreement, and any other dispute arising out of or relating to this Agreement, that cannot be resolved by agreement between the Parties shall be finally settled by arbitration according to
the ICC Rules and the following: 

  
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PURSUANT TO RULE 406 PROMULGATED UNDER THE SECURITIES ACT OF 1933, AS AMENDED. 

 14.2 The number of arbitrators shall be three. Each Party shall nominate one arbitrator for confirmation by
the ICC. If a Party fails to nominate an arbitrator within the time period specified by the ICC Rules, the ICC Court of Arbitration shall appoint an arbitrator for that Party. The arbitrators nominated by (or on behalf of) the Parties shall, within
twenty one (21) days after their confirmation by the ICC Court of Arbitration, agree on a third arbitrator who shall act as the chairman. 
  

	14.3	The language of the arbitration shall be English. 

 14.4 The decision of the arbitrators shall be final, conclusive and binding on the Parties. Any award rendered by the arbitrators may be enforced by any court or authority of competent jurisdiction.

  

	14.5	The place of the arbitration shall be London, England. 

  

	14.6	Any monetary award shall be denominated in USD. 

  

	14.7	The arbitrators shall be bound to follow the terms and conditions of this Agreement including, but not limited to, all limitations of liability provided herein.

  

	15.	GENERAL PROVISIONS 

 15.1
Assignment. Subscriber may not assign this Agreement or any right or obligation under this Agreement without Amadeus’ consent. If Amadeus permits an assignment, the assignee will be deemed to have assumed and be bound by all of
Subscriber obligations under this Agreement. Amadeus may assign this Agreement to (i) a company within the Amadeus Group, and (ii) to any entity that acquires substantially all of Amadeus’ assets. 

15.2 Force Majeure. Neither Party shall be responsible for, nor be deemed to be in default under this Agreement on account of, any failure
to perform or delay in performance hereunder caused directly or indirectly by any fact beyond such Party’s reasonable control including, but not limited to, acts of God, war, terrorism, criminal acts of third parties, embargo, strikes or, work
stoppage riots, civil unrest, fires or acts of government (“Force Majeure”). The Party claiming that Force Majeure has occurred shall without unnecessary delay notify the other Party in writing of the cause and effect of the Force Majeure.
The Parties shall use their best efforts to avoid, overcome and offset the effects of any cause or potential cause of an event of Force Majeure. The Party claiming Force Majeure shall notify the other Party immediately of the cessation of the Force
Majeure. Upon cessation of the cause of the Force Majeure, this Agreement shall again become fully operative up to the original term of the agreement. In the event any Force Majeure continues beyond 60 days, either Party shall have the right to
terminate this Agreement without any pecuniary liability. 
  

	15.3	Governing Law. This Agreement is governed by and construed in accordance with the laws of England. 

15.4 Public Communications. All public communications that mention both Parties shall be mutually agreed upon. The Parties will work
together to draft a joint press release to be issued following the execution of the Definitive Agreement. 
 15.5 Waiver. No
waiver of any provision or of any breach of this Agreement shall constitute a waiver of any other provision or of any subsequent breach. 

  
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PURSUANT TO RULE 406 PROMULGATED UNDER THE SECURITIES ACT OF 1933, AS AMENDED. 

 15.6 Independence. In no event shall either Party act as an agent of the other. The Parties
are entirely independent from the other and this Agreement in no manner creates a partnership, joint venture or similar relationship. 
 15.7
Entire Agreement / Modification. This Agreement constitutes the entire agreement between the Parties with respect to this subject matter and supersedes and cancels all prior agreements or understandings, oral or written, including that
certain Term Sheet entered into between the parties effective 3 November 2006, as amended. This Agreement may not be modified or amended except in writing, signed by authorized representatives of each Party. 

15.8 Third Party Beneficiary. This Agreement is for the benefit of the Parties only. It does not confer any rights or benefits on any other
party including any Franchisee. 
 15.9 Severability. If any provision of this Agreement shall be invalid, illegal, or
unenforceable in any respect, it shall be ineffective only to the extent of such invalidity, illegality or unenforceability and shall not in any way affect or impair the validity, legality and enforceability of the balance of such provision or any
other provision of this Agreement. The Parties shall endeavour in good faith negotiations to replace the invalid, illegal or unenforceable provision(s) or such portion thereof with such valid, legal and enforceable provision(s) the economic effect
or which is as close as possible to that of the invalid, illegal or unenforceable provision(s). 
 15.10 Captions. The captions
appearing in this Agreement have been inserted as a matter of convenience and in no way define, limit or enlarge the scope of any provision of this Agreement. 
 15.11 Counterparts. This Agreement may be executed in one or more counterparts, each of which shall be deemed an original, but all of which together shall constitute one and the same
instrument. 
 15.12 Quarterly Status Meeting. Each party shall designate representatives to attend a quarterly status meeting to
review performance and discuss on-going collaboration. 
 IN WITNESS THEREOF, the Parties hereto have executed this Agreement as of the
day and year first below written. 
  

									
	Amadeus IT Group, S.A.	 		 	KAYAK Software Corporation
					
	Name:	 	Stephane Durand	 		 	Name:	 	Keith Melnick
	 Title:
 Date:
	 	 Director, Leisure & Online

3 April 2012
	 		 	 Title:
 Date:
	 	 Chief Commercial Officer
 3
April 2012

	 /s/ Stephane Durand
	 		 	 /s/ Keith Melnick

	Signature	 		 	Signature

  
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PURSUANT TO RULE 406 PROMULGATED UNDER THE SECURITIES ACT OF 1933, AS AMENDED. 

 Attachment A – Charges 

 

	1.	MetaPricer 

  

	1.1	MetaPricer Fees 

  

	 	(a)	Kayak will pay a MetaPricer Query fee based on the number of MetaPricer Queries as set out below (the “MetaPricer Query Charge”). 

 

	 	(b)	Up to a monthly average of [            ]* Split Queries per MetaPricer Query can be sent to Amadeus, such
monthly average to be measured on a rolling quarterly basis; provided that this provision does not apply to [            ]*. 

 

	 	(c)	Kayak will pay the MetaPricer Query Charge for [            ]*. 

 

	 	(d)	For all non-North America Domestic Queries and Split Queries, Kayak will pay a premium of [            ]*
over the MetaPricer Query Charge as set forth below. 

 1.1.1 Non North America Domestic Queries will be charged
at the following rates until [            ]* or such earlier time as Amadeus [            ]* (“the Interim Period”):

  

													
	 Queries per month
Non US
Domestic
	  	 0 to 1,000,000
	  	1,000,001 to
3,000,000	  	3,000,001 to
6,000,000	  	6,000,001 to
12,000,000	  	12,000,001 to
20,000,000	  	20,000,001 and
above
	MetaPricer Query Charge	  	[        ]*	  	[        ]*	  	[        ]*	  	[        ]*	  	[        ]*	  	[        ]*
							
	Premium price for non-North America Domestic Queries and Split Queries (up to [        ]* split queries per MetaPricer Query)	  	[        ]* over the MetaPricer Query Charge	  	[        ]* over
the
MetaPricer
Query Charge	  	[        ]* over
the
MetaPricer
Query Charge	  	[        ]* over
the
MetaPricer
Query Charge	  	[        ]* over
the
MetaPricer
Query Charge	  	[        ]* over
the
MetaPricer
Query Charge

  
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 * CONFIDENTIAL TREATMENT REQUESTED. OMITTED PORTIONS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION
PURSUANT TO RULE 406 PROMULGATED UNDER THE SECURITIES ACT OF 1933, AS AMENDED. 

 For the avoidance of doubt, the charges above will apply according to their volume level. For example, a
monthly volume of [          ]* million transactions will generate [            ]* million transactions in the first column prices, and
[            ]* million in the second column prices. 
 No volume queries from North
America Domestic Queries will contribute to the table bands above. 
 1.1.2 North America Domestic Queries will be charged at
the following rates during the Interim Period: 
 Per MetaPricer Query for North America Domestic Queries =
[            ]* 
 Per MetaPricer Query for North America Domestic Split Queries (up
to [            ]* Split Queries per MetaPricer Query) = [            ]* 

Up to a monthly average of [            ]* North America Domestic Split Queries per
MetaPricer Query can be sent to Amadeus, such monthly average to be measured on a rolling quarterly basis. The total excess North America Domestic Split Queries per MetaPricer Query per month will be divided by
[            ]*, and the remainder will be charged as per the applicable MetaPricer Query charge. 
 1.1.3 All MetaPricer Queries (both North America Domestic and Non-North America) after the Interim Period: 
  

													
	 Queries per month
	  	 0 to 2,000,000
	  	2,000,001 to
5,000,000	  	5,000,001 to
10,000,000	  	10,000,001 to
20,000,000	  	20,000,001 to
30,000,000	  	30,000,001 and
above
	MetaPricer Query Charge	  	[        ]*	  	[        ]*	  	[        ]*	  	[        ]*	  	[        ]*	  	[        ]*
							
	Premium price for non-North America Domestic Queries and Split Queries (up to [            ]* split queries per
MetaPricer Query)	  	[        ]* over the MetaPricer Query Charge	  	[        ]* over
the
MetaPricer
Query Charge	  	[        ]* over
the
MetaPricer
Query Charge	  	[        ]* over
the
MetaPricer
Query Charge	  	[        ]* over
the
MetaPricer
Query Charge	  	[        ]* over
the
MetaPricer
Query Charge

  
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 * CONFIDENTIAL TREATMENT REQUESTED. OMITTED PORTIONS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION
PURSUANT TO RULE 406 PROMULGATED UNDER THE SECURITIES ACT OF 1933, AS AMENDED. 

 For the avoidance of doubt, the charges above will apply according to their volume level. For example, a
monthly volume of [          ]* million transactions will generate [            ]* million transactions in the first column prices, and
[            ]* million in the second column prices. 
 Each column above will be
allotted the corresponding percentage of North America Domestic Queries and Non-North America Domestic Queries according to the ratio between them in that month. For example, where a monthly volume of
[            ]* million transactions consists of [            ]* North America Domestic Queries and
[            ]* Non-North America Domestic Queries, 
[            ]* of the first column volume will be assigned to North
American Domestic Queries and [            ]* will be assigned to Non-North American Domestic Queries. 
  

	1.2	Minimum Fees 

 Kayak will guarantee
minimum fees as set forth below: 
  

																	
	 	  	2012	 	  	2013	 	  	2014	 	  	2015	 
	 Minimum fees per year
	  	 
 	[        ]*
million	  
  	  	 
 	[        ]*
million	  
  	  	 
 	[        ]*
million	  
  	  	 
 	[        ]*
million	  
  

  

	1.3	Excess Query Fee  

 Up to a
monthly average of [            ]* Split Queries per MetaPricer Query can be sent to Amadeus, such monthly average to be measured on a rolling quarterly basis. The total excess Split
Queries per MetaPricer Query per month will be divided by [            ]*, and the remainder will be charged as per the applicable MetaPricer Query charge. 

 

	2.	[            ]* 

 [            ]* will be charged as follows: 
 [            ]* price: 

[            ]* Split Queries per month =
[            ]* 

[            ]* Split Queries per month =
[            ]* 
 The monthly fee related to the first two months of live
production usage will be waived. In the event Kayak needs more than [          ]* MetaPricer Queries per month, the parties will meet to discuss a new monthly fee which, once agreed, will be
documented in an Amendment to this Agreement. Likewise, if Subscriber requires the use of the [            ]* solution beyond the
[            ]*, the parties will meet to discuss a replacement solution. 
  

	3.	Amadeus Web Services pricing 

  

	3.1	Ongoing Fees 

 A monthly fee of
[            ]* will be charged per Application for the use of Amadeus Web Services, with transaction reporting and help desk support included. However, for any month that Kayak pays more
than the monthly minimum fees as defined in Article 1.2 above, these Amadeus Web Services Ongoing fees will be waived. 

  
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PURSUANT TO RULE 406 PROMULGATED UNDER THE SECURITIES ACT OF 1933, AS AMENDED. 

 Attachment B 
 Amadeus Web Services Agreement 
 ARTICLE 1: DEFINITIONS 

For the purposes of this Attachment B, the following terms are defined as follows: 
 “Certification Schedule” means a timeframe during which Amadeus shall attempt to certify the Client Applications submitted by the Subscriber. 

“Client Application User” means any legal entity that contracts (i) with Subscriber to receive a license for the Client Application
in accordance with the terms of this Agreement and (ii) with Amadeus or any of its authorized affiliates or entities to receive access to the Amadeus System when using a Client Application in accordance with the terms of the applicable Access
Agreement (as defined herein). 
 “Client Application” means any developments using the Web Services, performed by Subscriber
and certified by Amadeus under the terms of this Agreement. For the avoidance of doubt, Subscriber shall maintain sole ownership, right, title and interest in the Client Application. 
 “Test System” means the system used to test and validate any developments by Subscriber before these developments are certified by Amadeus. 

“Web Services” means the Amadeus Web Services Program and related infrastructure, including but not limited to hardware, software and
services, made available by the Amadeus Group to Subscriber for the development of Client Applications, and to Client Application Users for providing access to the Amadeus System using Client Applications. 

ARTICLE 2: CERTIFICATION & TEST SYSTEM ACCESS 
 2.1 The Client Application developed must be certified by Amadeus in accordance with the Certification Guidelines Document provided by Amadeus. 
 2.2 Subscriber shall receive access to the Test System under this Agreement only for the development purposes described herein (which, subject to Amadeus’ written authorization, may include
performing test searches and bookings in order to determine the functionality of the Client Application) and not for any other purposes. 
 2.3
Upon Amadeus’ request, Subscriber shall inform Amadeus of the progress and status of the development of the Client Application. 
 2.4
Subscriber may subcontract the support and performance of the Client Application development work to a third-party developer; provided that (i) Subscriber first obtains Amadeus’ prior written consent; and (ii) Subscriber uses best
efforts to ensure that any such designated third party subcontractor complies with all the obligations stated herein. Notwithstanding the foregoing and despite Amadeus’ consent to Subscriber’s use of

  
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PURSUANT TO RULE 406 PROMULGATED UNDER THE SECURITIES ACT OF 1933, AS AMENDED. 

 
subcontractors, Subscriber shall at all times remain liable to Amadeus for the acts and omissions of its subcontractors. 
 2.5 In the event that Amadeus authorizes the subcontracting of the Client Application development work, Amadeus shall deliver the Software to that designated third party contractor subject to the terms
and conditions stated herein. 
 2.6 The Client Application shall be developed and submitted to Amadeus for Certification as further specified
in the Certification Guidelines provided by Amadeus within a maximum period of one (1) year after Amadeus delivers the Software to Subscriber. 
 ARTICLE 3: ACCESS TO THE WEB SERVICES BY DEVELOPER 
 3.1 Amadeus agrees to provide
Subscriber access to the Web Services under the terms and conditions described herein only for the development purposes described in this Attachment B. In the event that the establishment of a communication link between the Test System and the
equipment used for development is necessary, Subscriber shall be responsible for the ordering, maintenance, use and payment of such link and the costs arising therefrom. 
 3.2 Subscriber shall take all reasonable precautions necessary to prevent unauthorized access to the Test System through its connection to the Web Services. 

ARTICLE 4: MAINTENANCE AND SUPPORT 
  

	4.1	Amadeus’ responsibility for maintenance of the Software shall be as follows: 

 

	 	4.1.1	Amadeus shall provide maintenance services for only the latest release of the Software. It is the Developer’s responsibility to ensure that it is utilizing the
latest version of the Software concerning new releases or updated versions of the Software is available to Developer via the Web Services Developer website. 

 

	4.2	Amadeus shall have no responsibility to provide maintenance and support for the Client Application. 

 

	 	4.2.1	Developer shall be responsible to Amadeus and its contracted Client Application Users for maintaining and providing support for the Client Application it has developed
as well as any Client Application developed by any of its subcontractors or third party developers. 

  

	 	4.2.2	Amadeus shall not be responsible for providing support to the Client Application Users for problems regarding the Client Application. 

  
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PURSUANT TO RULE 406 PROMULGATED UNDER THE SECURITIES ACT OF 1933, AS AMENDED. 

 Attachment C 
 Service Level Agreement 
 To be completed in 45 days after signature date 

  
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PURSUANT TO RULE 406 PROMULGATED UNDER THE SECURITIES ACT OF 1933, AS AMENDED.

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