Document:

3rd Amended and Restated 2005 Equity Incentive Plan

  
 Exhibit 10.2

 KAYAK SOFTWARE CORPORATION 
 THIRD AMENDED AND RESTATED 2005 EQUITY INCENTIVE PLAN 

  
 TABLE
OF CONTENTS 
  

					
	1.	  	 Purpose
	  	1
			
	2.	  	 Definitions
	  	1
			
	3.	  	 Term of the Plan
	  	4
			
	4.	  	 Stock Subject to the Plan
	  	4
			
	5.	  	 Administration
	  	4
			
	6.	  	 Authorization and Eligibility of Grants
	  	5
			
	7.	  	 Specific Terms of Awards
	  	5
			
	8.	  	 Adjustment Provisions
	  	9
			
	9.	  	 Settlement of Awards
	  	11
			
	10.	  	 Reservation of Stock
	  	13
			
	11.	  	 No Special Employment or Other Rights
	  	13
			
	12.	  	 Nonexclusivity of the Plan
	  	13
			
	13.	  	 Termination and Amendment of the Plan
	  	13
			
	14.	  	 Notices and Other Communications
	  	14
			
	15.	  	 Provisions Applicable to Award Recipients Resident in California
	  	14
			
	16.	  	 Governing Law
	  	15

  
 KAYAK SOFTWARE
CORPORATION 
 THIRD AMENDED AND RESTATED 2005
EQUITY INCENTIVE PLAN 
  

	1.	 Purpose 

 This Plan is intended to encourage ownership of Stock by employees, consultants and directors of the Company and its Affiliates and to provide additional incentive for them to promote the success of the
Company’s business. The Plan is intended to be an incentive stock option plan within the meaning of Section 422 of the Code, but not all Awards are required to be Incentive Options. 

 

	2.	 Definitions 

 As used in this Plan, the following terms shall have the following meanings: 
 2.1. Accelerate, Accelerated, and Acceleration, when used with respect to an Option, means that as of the time of reference the Option will become exercisable with respect to some or
all of the shares of Stock for which it was not then otherwise exercisable by its terms, and, when used with respect to Restricted Stock, means that the Risk of Forfeiture otherwise applicable to the Stock shall expire with respect to some or all of
the shares of Restricted Stock then still otherwise subject to the Risk of Forfeiture. 
 2.2. Affiliate
means any corporation, partnership, limited liability company, business trust, or other entity controlling, controlled by or under common control with the Company. 

2.3. Award means any grant or sale pursuant to the Plan of Options, Restricted Stock or Stock Grants. 

2.4. Award Agreement means an agreement between the Company and the recipient of an Award, setting forth
the terms and conditions of the Award. 
 2.5. Board means the Company’s Board of Directors.

 2.6. Cause means, with respect to a Participant, any one or more of the following: (i) failure or
refusal to perform the Participant’s reasonably assigned duties to the Company; (ii) material breach of any employment agreement, any consulting or services agreement, any non-disclosure or non-competition agreement or any other agreement
between the Optionee and the Company relating to the Participant’s employment or other association with the Company and its Affiliates; (iii) embezzlement, misappropriation of assets or property (tangible or intangible) of the Company;
(iv) gross negligence, misconduct, neglect of duties, theft, dishonesty or fraud with respect to the Company, or breach of fiduciary duty to the Company; or (v) the indictment or conviction of a felony, or any crime involving moral
turpitude, including a plea of guilty or nolo contendre. Notwithstanding the foregoing, if the Participant and the Company or an Affiliate have entered into an employment, consulting or services agreement that defines the term “Cause” (or
a similar term), such definition shall govern for purposes of determining whether the Participant has been terminated for Cause for purposes of the Plan. The determination of Cause shall be made by the Committee, in its sole discretion. 

2.7. Change of Control means (a) any merger or consolidation of the Company with or into
another person or entity, other than a merger or consolidation in which the holders of capital stock of the Company immediately prior to such merger or consolidation will hold more than fifty percent (50%) of

 
the capital stock or equity interests of the surviving corporation or the surviving entity, as the case may be, immediately after such merger or consolidation, (b) any sale, transfer or
other disposition of all or substantially all the assets of the Company to one or more persons or entities in a single transaction or a series of related transactions or (c) any person or group of persons (within the meaning of
Section 13(d)(3) of the Securities Exchange Act of 1934, as amended (the “Exchange Act”)), directly or indirectly acquires, including but not limited to by means of a merger or consolidation, beneficial ownership
(determined pursuant to Securities and Exchange Commission Rule 13d-3 promulgated under the Exchange Act) of securities possessing more than fifty percent (50%) of the total combined voting power of the Company’s outstanding
securities, other than (i) the Company or any of its Affiliates, (ii) an employee benefit plan of the Company or any of its Affiliates, (iii) a trustee or other fiduciary holding securities under an employee benefit plan
of the Company or any of its Affiliates or (iv) an underwriter temporarily holding securities pursuant to an offering of such securities. 
 2.8. Code means the Internal Revenue Code of 1986, as amended from time to time, or any successor statute thereto, and any regulations issued from time to time thereunder. 

2.9. Committee means any committee of the Board delegated responsibility by the Board for the administration of
the Plan, as provided in Section 5 hereof. For any period during which no such committee is in existence “Committee” shall mean the Board and all authority and responsibility assigned to the Committee under the Plan shall be
exercised, if at all, by the Board. 
 2.10. Company means Kayak Software Corporation, a corporation
organized under the laws of the State of Delaware. 
 2.11. Disability means any physical incapacity or
mental incompetence (i) as a result of which a Participant is unable to perform the essential functions of the Participant’s job or duties for an aggregate of ninety (90) days, whether or not consecutive, during any 180-day period and
the Company determines in good faith that such incapacity or incompetence is likely to continue for at least the next thirty (30) days, and (ii) which cannot be reasonably accommodated by the Company without undue hardship. Notwithstanding
the foregoing, if the Participant and the Company or an Affiliate have entered into an employment, consulting or services agreement which defines the term ““Disability” (or a similar term), such definition shall govern for purposes of
determining whether the Participant suffers a Disability for purposes of the Plan. The determination of Disability shall be made by the Committee, in its sole discretion. The determination of Disability for purposes of the Plan shall not be
construed to be an admission of disability for any other purpose. 
 2.12. Good Reason means
(i) mutual written agreement by a Participant and the Board that Good Reason exists; (ii) a material violation by the Company of its employment, consulting or services agreement with the Participant that continues uncured for a period of
thirty (30) days after notice thereof by the Participant; (iii) if such Participant is an executive officer of the Company, demotion of the Participant, without the Participant’s prior consent, to a position that does not include
significant managerial responsibilities; (iv) reduction in the Participant’s base salary, other than in connection with, and substantially proportionate to, a general salary reduction program that applies to the Company’s similar
class of officers or employees; or (v) a relocation of the Company that requires the Participant to commute to an office that is more than sixty (60) miles away from the Participant’s then current place of employment. Notwithstanding
the foregoing, if the Participant and the Company or an Affiliate have entered into an employment, consulting or services agreement that defines the term “Good Reason” (or a similar term), such definition shall govern for purposes of
determining whether the Participant has been terminated for Good Reason for purposes of the Plan. The determination of Good Reason shall be made by the Committee, in its sole discretion. 

  
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 2.13.
Grant Date means the date as of which an Option is granted, as determined under Section 7.1(a) hereof. 
 2.14. Incentive Option means an Option that by its terms is to be treated as an “incentive stock option” within the meaning of Section 422 of the Code. 

2.15. Market Value means the value of a share of Stock on any date as determined by the Committee.

 2.16. Nonstatutory Option means any Option that is not an Incentive Option. 

2.17. Option means an option to purchase shares of Stock. 

2.18. Optionee means a Participant to whom an Option shall have been granted under the Plan. 

2.19. Participant means any holder of an outstanding Award under the Plan. 

2.20. Plan means this Second Amended and Restated 2005 Equity Incentive Plan of the Company, as amended from time
to time, and including any attachments or addenda hereto. 
 2.21. Restricted Stock means a grant
or sale of shares of Stock to a Participant subject to a Risk of Forfeiture. 
 2.22. Restriction
Period means the period of time, established by the Committee in connection with an Award of Restricted Stock, during which the shares of Restricted Stock are subject to a Risk of Forfeiture described in the applicable Award Agreement.

 2.23. Risk of Forfeiture means a limitation on the right of the Participant to retain
Restricted Stock, including a right in the Company to reacquire the Shares at less than their then Market Value, arising because of the occurrence or non-occurrence of specified events or conditions. 

2.24. Stock means common stock, par value $0.001 per share, of the Company and such other securities as may be
substituted for Stock pursuant to Section 8 hereof. 
 2.25. Stock Grant means the grant of
shares of Stock not subject to restrictions or other forfeiture conditions. 
 2.26. Stockholders
Agreement means that certain Stock Restriction and Co-Sale Agreement, dated as of March 2, 2004, by and among the Company and the other parties thereto (as may be amended and/or modified and in effect from time to time) or any successor
or similar agreement by and among the holders of at least a majority of the outstanding voting securities of the Company and setting forth, among other provisions, restrictions upon the transfer of shares of Stock or on the exercise of rights
appurtenant thereto (including but not limited to voting rights). 
 2.27. Ten Percent
Owner means a person who owns, or is deemed within the meaning of Section 422(b)(6) of the Code to own, stock possessing more than ten percent (10%) of the total combined voting power of all classes of stock of the Company (or any
parent or subsidiary corporations of the Company, as defined in Sections 424(e) and (f), respectively, of the Code). Whether a person is a Ten Percent Owner shall be determined with respect to an Option based on the facts existing immediately
prior to the Grant Date of the Option. 

  
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	3.	 Term of the Plan 

 Unless the Plan shall have been earlier terminated by the Board, Awards may be granted under this Plan at any time in the period commencing on the date of approval of the Plan by the Board and ending
immediately prior to the tenth anniversary of the earlier of the adoption of the Plan by the Board or approval of the Plan by the Company’s stockholders. Awards granted pursuant to the Plan within that period shall not expire solely by reason
of the termination of the Plan. Awards of Incentive Options granted prior to stockholder approval of the Plan are expressly conditioned upon such approval, but in the event of the failure of the stockholders to approve the Plan shall thereafter and
for all purposes be deemed to constitute Nonstatutory Options. 
  

	4.	 Stock Subject to the Plan 

 At no time shall the number of shares of Stock issued pursuant to or subject to outstanding Awards granted under the Plan, including, without limitation, the number of shares of Stock issued pursuant to
Incentive Options, exceed the number which a number of shares equal 12,000,000 minus the Outstanding 2004 Amount; subject, however, to the provisions of Section 8 hereof. For purposes of applying the foregoing limitation, if (a) any
Option expires, terminates, or is cancelled for any reason without having been exercised in full, or if any Award of Restricted Stock is forfeited by the recipient or repurchased by the Company, the shares not purchased by the Optionee, forfeited by
the recipient or repurchased by the Company shall again be available for Awards to be granted under the Plan, and (b) if any Option is exercised by delivering previously owned shares of Stock in payment of the exercise price therefor, only the
net number of shares of Stock issued upon such exercise (i.e., the number of shares of Stock issued by the Company minus the number of shares of Stock delivered by the Optionee in payment of the exercise price) shall be considered to have
been issued pursuant to such Option. “Outstanding 2004 Amount” means at any time a number of shares of Stock equal to the sum of (i) the aggregate number, as of such time, of unpurchased shares of Stock underlying all options
previously granted and outstanding as of such time under the Company’s 2004 Stock Incentive Plan, (ii) the aggregate number of shares of Stock previously issued in respect of any exercise of options previously granted under under the
Company’s 2004 Stock Incentive Plan, whether or not such shares of Stock are outstanding as of such time, and (iii) the aggregate number, as of such time, of shares of Stock which were issued as Awards of Restricted Stock under the
Company’s 2004 Stock Incentive Plan excluding any such shares of Stock which have been forfeited by the recipient or repurchased by the Company pursuant to the terms of such Award. Shares of Stock issued pursuant to the Plan may be either
authorized but unissued shares or shares held by the Company in its treasury. 
  

	5.	 Administration 

 The Plan shall be administered by the Committee; provided, however, that at any time and on any one or more occasions the Board may itself exercise any of the powers and responsibilities assigned
the Committee under the Plan and when so acting shall have the benefit of all of the provisions of the Plan pertaining to the Committee’s exercise of its authorities hereunder; and provided further, however, that the Committee may
delegate to an executive officer or officers the authority to grant Awards hereunder to employees who are not officers, and to consultants, in accordance with such guidelines as the Committee shall set forth at any time or from time to time. Subject
to the provisions of the Plan, the Committee shall have complete authority, in its discretion, to make or to select the manner of making all determinations with respect to each Award to be granted by the Company under the Plan including the
employee, consultant or director to receive the Award and the form of Award. In making such determinations, the Committee may take into account the nature of the services rendered by the respective employees, consultants, and directors, their
present and potential contributions to the success of the Company and its Affiliates, and such other factors as the Committee in its discretion shall deem relevant. Subject to the 

  
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provisions of the Plan, the Committee shall also have complete authority to interpret the Plan, to prescribe, amend and rescind rules and regulations relating to it, to determine the terms and
provisions of the respective Award Agreements (which need not be identical), and to make all other determinations necessary or advisable for the administration of the Plan. The Committee’s determinations made in good faith on matters referred
to in the Plan shall be final, binding and conclusive on all persons having or claiming any interest under the Plan or an Award made pursuant hereto. 
  

	6.	 Authorization and Eligibility of Grants 

6.1. Eligibility. The Committee may grant from time to time and at any time prior to the termination of the Plan
one or more Awards, either alone or in combination with any other Awards, to any employee of or consultant to one or more of the Company and its Affiliates or to any non-employee member of the Board or of any board of directors (or similar governing
authority) of any Affiliate. However, only employees of the Company, and of any parent or subsidiary corporations of the Company, as defined in Sections 424(e) and (f), respectively, of the Code, shall be eligible for the grant of an Incentive
Option. Further, in no event shall the number of shares of Stock covered by Options or other Awards granted to any one person in any one calendar year exceed twenty-five percent (25%) of the aggregate number of shares of Stock subject to the
Plan. 
 6.2. General Terms of Awards. Each grant of an Award shall be subject to
all applicable terms and conditions of the Plan (including but not limited to any specific terms and conditions applicable to that type of Award set out in the following Section), and such other terms and conditions, not inconsistent with the terms
of the Plan, as the Committee may prescribe. No prospective Participant shall have any rights with respect to an Award, unless and until such Participant has executed an agreement evidencing the Award, delivered a fully executed copy thereof to the
Company, and otherwise complied with the applicable terms and conditions of such Award. 
 6.3.
Non-Transferability of Awards. Except as otherwise provided in this Section 6.3, Awards shall not be transferable, and no Award or interest therein may be sold, transferred, pledged, assigned or otherwise alienated or
hypothecated, other than by will or by the laws of descent and distribution. All of a Participant’s rights in any Award may be exercised during the life of the Participant only by the Participant or the Participant’s legal representative.
However, the Committee may, at or after the grant of an Award of a Nonstatutory Option, or shares of Restricted Stock, provide that such Award may be transferred by the recipient to a family member; provided, however, that any such transfer
is without payment of any consideration whatsoever and that no transfer shall be valid unless first approved by the Committee, acting in its sole discretion. For this purpose, “family member” means any child, stepchild, grandchild, parent,
stepparent, spouse, former spouse, sibling, niece, nephew, mother-in-law, father-in-law, son-in-law, daughter-in-law, brother-in-law or sister-in-law, including adoptive relationships, any person sharing the employee’s household (other than a
tenant or employee), a trust in which the foregoing persons have more than fifty percent (50%) of the beneficial interests, a foundation in which the foregoing persons (or the Participant) control the management of assets, and any other entity
in which these persons (or the Participant) own more than fifty percent (50%) of the voting interests. 
  

	7.	 Specific Terms of Awards 

 7.1. Options. 
 (a) Date of Grant. The
granting of an Option shall take place at the time specified in the Award Agreement. Only if expressly so provided in the applicable Award Agreement shall the Grant Date be the date on which the Award Agreement shall have been duly executed and
delivered by the Company and the Optionee. 

  
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 (b)
Exercise Price. The price at which shares of Stock may be acquired under each Incentive Option shall be not less than one hundred percent (100%) of the Market Value of Stock on the Grant Date, or not less than one hundred ten
percent (110%) of the Market Value of Stock on the Grant Date if the Optionee is a Ten Percent Owner. The price at which shares may be acquired under each Nonstatutory Option shall not be so limited solely by reason of this Section. 

(c) Option Period. No Incentive Option may be exercised on or after the tenth anniversary of the Grant
Date, or on or after the fifth anniversary of the Grant Date if the Optionee is a Ten Percent Owner. The Option period under each Nonstatutory Option shall not be so limited solely by reason of this Section 7.1(c). 

(d) Exercisability. An Option may be immediately exercisable or become exercisable in such installments,
cumulative or non-cumulative, as the Committee may determine. In the case of an Option not otherwise immediately exercisable in full, the Committee may Accelerate such Option in whole or in part at any time; provided, however, that in the
case of an Incentive Option, any such Acceleration of the Option would not cause the Option to fail to comply with the provisions of Section 422 of the Code or the Optionee consents to the Acceleration. 

(e) Termination of Association with the Company. Unless the Committee shall
provide otherwise with respect to any Option, if the Optionee’s employment or other association with the Company and its Affiliates ends for any reason, including because of the Optionee’s employer ceasing to be an Affiliate, any
outstanding Option of the Optionee shall cease to be exercisable in any respect not later than ninety (90) days following that event and, for the period it remains exercisable following that event, shall be exercisable only to the extent
exercisable at the date of that event. Military or sick leave or other bona fide leave shall not be deemed a termination of employment or other association, provided that it does not exceed the longer of ninety (90) days or the period
during which the absent Optionee’s reemployment rights, if any, are guaranteed by statute or by contract. 

(f) Method of Exercise. An Option may be exercised by the Optionee giving written notice, in the
manner provided in Section 14 hereof, specifying the number of shares with respect to which the Option is then being exercised. The notice shall be accompanied by payment in the form of cash or check payable to the order of the Company in an
amount equal to the exercise price of the shares to be purchased or, if the Committee had so authorized on the grant of an Incentive Option or on or after the grant of a Nonstatutory Option (and subject to such conditions, if any, as the Committee
may deem necessary to avoid adverse accounting effects to the Company), by delivery to the Company of: 
 (a) shares of Stock having a Market Value equal to the exercise price of the shares to be purchased, or 

(b) the Optionee’s executed promissory note in the principal amount equal to the exercise price of
the shares to be purchased and otherwise in such form as the Committee shall have approved. 
 If the Stock becomes traded on an
established market, payment of any exercise price may also be made through and under the terms and conditions of any formal cashless exercise program authorized by the Company entailing the sale of the Stock subject to an Option in a brokered
transaction (other than to the Company). Receipt by the Company of such notice and payment in any authorized or combination of authorized means shall constitute the exercise of the Option. Within thirty (30) days thereafter but subject to the
remaining provisions of the Plan, the Company shall deliver or cause to be delivered to the Optionee or his agent a certificate or certificates for the number of shares then being purchased. Such shares shall be fully paid and nonassessable.

  
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 (g)
Limit on Incentive Option Characterization. An Incentive Option shall be considered to be an Incentive Option only to the extent that the number of shares of Stock for which the Option first becomes exercisable in
a calendar year do not have an aggregate Market Value (as of the date of the grant of the Option) in excess of the “current limit.” The current limit for any Optionee for any calendar year shall be $100,000 minus the aggregate
Market Value at the date of grant of the number of shares of Stock available for purchase for the first time in the same year under each other Incentive Option previously granted to the Optionee under the Plan, and under each other incentive stock
option previously granted to the Optionee under any other incentive stock option plan of the Company and its Affiliates, after December 31, 1986. Any shares of Stock that would cause the foregoing limit to be violated shall be deemed to have
been granted under a separate Nonstatutory Option, otherwise identical in its terms to those of the Incentive Option. 
 (h) Notification of Disposition. Each person exercising any Incentive Option granted under the Plan shall be deemed to have covenanted with the Company to report to the Company any
disposition of such shares prior to the expiration of the holding periods specified by Section 422(a)(1) of the Code and, if and to the extent that the realization of income in such a disposition imposes upon the Company federal, state, local
or other withholding tax requirements, or any such withholding is required to secure for the Company an otherwise available tax deduction, to remit to the Company an amount in cash sufficient to satisfy those requirements. 

(i) Rights Pending Exercise. No person holding an Option shall be deemed for any purpose to be a
stockholder of the Company with respect to any of the shares of Stock issuable pursuant to his Option, except to the extent that the Option shall have been exercised with respect thereto and, in addition, a certificate shall have been issued
therefor and delivered to such holder or his agent. 
 7.2. Restricted Stock. 

(a) Purchase Price. Shares of Restricted Stock shall be issued under the Plan for such consideration, in
cash, other property or services, or any combination thereof, as is determined by the Committee. 
 (b)
Issuance of Certificates. Each Participant receiving a Restricted Stock Award, subject to subsection (c) below, shall be issued a stock certificate in respect of such shares of Restricted Stock. Such certificate shall be
registered in the name of such Participant, and, if applicable, shall bear an appropriate legend referring to the terms, conditions, and restrictions applicable to such Award substantially in the following form: 

 

	
	 THE TRANSFERABILITY OF THIS CERTIFICATE AND THE SHARES REPRESENTED BY THIS CERTIFICATE ARE SUBJECT TO THE TERMS AND CONDITIONS OF THE KAYAK SOFTWARE CORPORATION
SECOND AMENDED AND RESTATED 2005 EQUITY INCENTIVE PLAN AND AN AWARD AGREEMENT ENTERED INTO BY THE REGISTERED OWNER AND KAYAK SOFTWARE CORPORATION. COPIES OF SUCH PLAN AND AGREEMENT ARE ON FILE IN THE OFFICES OF KAYAK SOFTWARE
CORPORATION.

 (c) Escrow of Shares. The Committee may require that the
stock certificates evidencing shares of Restricted Stock be held in custody by a designated escrow agent (which may, but need not be, the Company) until the restrictions thereon shall have lapsed, and that the Participant deliver a stock power,
endorsed in blank, relating to the Stock covered by such Award. 

  
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 (d)
Restrictions and Restriction Period. During the Restriction Period applicable to shares of Restricted Stock, such shares shall be subject to limitations on transferability and a Risk of Forfeiture arising on the basis of
such conditions related to the performance of services, Company or Affiliate performance or otherwise as the Committee may determine and provide for in the applicable Award Agreement. Any such Risk of Forfeiture may be waived or terminated, or the
Restriction Period shortened, at any time by the Committee on such basis as it deems appropriate. 
 (e)
Rights Pending Lapse of Risk of Forfeiture or Forfeiture of Award. Except as otherwise provided in the Plan or the applicable Award Agreement, at all times prior to lapse
of any Risk of Forfeiture applicable to, or forfeiture of, an Award of Restricted Stock, the Participant shall have all of the rights of a stockholder of the Company, including the right to vote, and the right to receive any dividends with respect
to, the shares of Restricted Stock. The Committee, as determined at the time of Award, may permit or require the payment of cash dividends to be deferred and, if the Committee so determines, reinvested in additional Restricted Stock to the extent
shares are available under Section 4 hereof. 
 (f) Termination of Association
with the Company. Unless the Committee shall provide otherwise for any Award of Restricted Stock, upon termination of a Participant’s employment or other association with the Company and its Affiliates for any reason during
the Restriction Period, including because of the Participant’s employer ceasing to be an Affiliate during the Restriction Period, all shares of Restricted Stock still subject to Risk of Forfeiture shall be forfeited or otherwise subject to
return to or repurchase by the Company on the terms specified in the Award Agreement; provided, however, that military or sick leave or other bona fide leave shall not be deemed a termination of employment or other association, if it does not
exceed the longer of ninety (90) days or the period during which the absent Participant’s reemployment rights, if any, are guaranteed by statute or by contract. 

(g) Lapse of Restrictions. If and when the Restriction Period expires without a prior forfeiture of
the Restricted Stock, the certificates for such shares shall be delivered to the Participant promptly if not theretofore so delivered. 
 7.3. Stock Grants. Stock Grants shall be awarded solely in recognition of significant contributions to the success of the Company or its Affiliates in lieu of compensation otherwise already
due and in such other limited circumstances as the Committee deems appropriate. Stock Grants shall be made without forfeiture conditions of any kind. 
 7.4. Awards to Participants Outside the United States. The Committee may modify the terms of any Award under the Plan granted to a Participant who is, at
the time of grant or during the term of the Award, resident or primarily employed outside of the United States in any manner deemed by the Committee to be necessary or appropriate in order that the Award shall conform to laws, regulations, and
customs of the country in which the Participant is then resident or primarily employed, or so that the value and other benefits of the Award to the Participant, as affected by foreign tax laws and other restrictions applicable as a result of the
Participant’s residence or employment abroad, shall be comparable to the value of such an Award to a Participant who is resident or primarily employed in the United States. The Committee may establish supplements to, or amendments, restatements
or alternative versions of the Plan for the purpose of granting and administrating any such modified Award. No such modification, supplement, amendment, restatement or alternative version may increase the share limit set forth in Section 4
hereof. 

  
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	8.	 Adjustment Provisions 

 8.1. Adjustment for Corporate Actions. All of the share numbers set forth in the Plan reflect the capital structure of the Company as of November 10, 2004. Subject to
Section 8.2 hereof, if subsequent to such date the outstanding shares of Stock (or any other securities covered by the Plan by reason of the prior application of this Section) are increased, decreased or exchanged for a different number or kind
of shares or other securities, or if additional shares or new or different shares or other securities are distributed with respect to shares of Stock through merger, consolidation, sale of all or substantially all the property of the Company,
reorganization, recapitalization, reclassification, stock dividend, stock split, reverse stock split or other distribution with respect to such shares of Stock, an appropriate and proportionate adjustment will be made in (a) the maximum numbers
and kinds of shares provided in Section 4 hereof, (b) the numbers and kinds of shares or other securities subject to the then outstanding Awards, (c) the exercise price for each share or other unit of any other securities subject to
then outstanding Options (without change in the aggregate purchase price as to which such Options remain exercisable), and (d) the repurchase price of each share of Restricted Stock then subject to a Risk of Forfeiture in the form of a Company
repurchase right. 
 8.2. Treatment Upon Change of Control. Subject to any
provisions of then outstanding Awards granting greater rights to the holders thereof, in the event of a Change of Control: 
 (a) (i) fifty percent (50%) of the then unvested portion of all Options held by an Optionee and outstanding as of the date such Change in Control is determined to have occurred shall Accelerate as of
such date and (ii) the remaining outstanding Options held by such Optionee to the extent not exercisable and vested shall Accelerate (A) upon such Optionee’s employment or other association with the Company and its Affiliates being
terminated by the Company without Cause or by such Optionee for Good Reason or upon such Optionee’s position, duties, authority or responsibilities, taken as a whole and other than on an isolated, temporary basis, being materially diminished,
in either case within one year after the date such Change of Control is determined to have occurred, or (B) upon the date such Change in Control is determined to have occurred if such termination or dimunition occurs within sixty (60) days
prior to the date on which such Change of Control is determined to have occurred and such Optionee reasonably demonstrates that such termination or dimunition was at the request of a third party that took actions to effect the Change of Control or
otherwise arose in connection with or anticipation of such Change of Control; 
 (b) (i) with respect to all
Awards of Restricted Stock still then subject to a Risk of Forfeiture held by a Participant and outstanding as of the date of such Change in Control, the Risk of Forfeiture applicable to fifty percent (50%) of such Awards of Restricted Stock
shall lapse, and the Stock relating to such Awards shall become free of all restrictions and become fully vested and transferable, as of the date such Change in Control is determined to have occurred, and (ii) the Risk of Forfeiture applicable
to the remaining Awards of Restricted Stock held by such Participant shall lapse, and the Stock relating to such Awards shall become fully vested and transferable, (A) upon such Participant’s employment or other association with the
Company and its Affiliates being terminated by the Company without Cause or by such Participant for Good Reason or upon such Participant’s position, duties, authority or responsibilities, taken as a whole and other than on an isolated,
temporary basis, being materially diminished, in either case within one year after the date such Change of Control is determined to have occurred, or (B) upon the date such Change in Control is determined to have occurred if such termination or
dimunition occurs within sixty (60) days prior to the date on which such Change of Control is determined to have occurred and such Participant reasonably demonstrates that such termination or dimunition was at the request of a third party that
took actions to effect the Change of Control or otherwise arose in connection with or anticipation of the Change of Control; 

  
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 (c)
(i) all outstanding repurchase rights of the Company with respect to fifty percent (50%) of all outstanding Awards held by a Participant and outstanding as of the date of such Change in Control shall terminate as of the date such Change in
Control is determined to have occurred, and (ii) all outstanding repurchase rights of the Company with respect to the remaining outstanding Awards held by such Participant shall terminate (A) upon such Participant’s employment or
other association with the Company and its Affiliates being terminated by the Company without Cause or by the Participant for Good Reason or upon such Participant’s position, duties, authority or responsibilities, taken as a whole and other
than on an isolated, temporary basis, being materially diminished, in either case within one year after the date such Change of Control is determined to have occurred, or (B) upon the date such Change in Control is determined to have occurred
if such termination or dimunition occurs within sixty (60) days prior to the date on which the Change of Control is determined to have occurred and such Participant reasonably demonstrates that such termination or dimunition was at the request
of a third party that took actions to effect the Change of Control or otherwise arose in connection with or anticipation of the Change of Control; and 
 (d) (i) Outstanding Awards shall be subject to any agreement of merger or reorganization that effects such Change in Control, which agreement may provide for any of the following: 

(A) the continuation of the outstanding Awards by the Company, if the Company is a surviving corporation; 

(B) the assumption of the outstanding Awards by the surviving corporation or its parent or subsidiary; 

(C) the substitution by the surviving corporation or its parent or subsidiary of equivalent awards for the outstanding
Awards; or 
 (D) settlement of each share of Stock subject to an outstanding Award for the Change in Control
Price (as defined below) (less, to the extent applicable, the per share exercise price) or, to the extent applicable, if the per share exercise price equals or exceeds the Change in Control Price, the outstanding Award shall terminate and be
canceled. 
 (ii) In the absence of any agreement of merger or reorganization effecting such Change in Control,
each share of Stock subject to an outstanding Award shall be settled for the Change in Control Price (less, to the extent applicable, the per share exercise price). 

As used herein, “Change in Control Price” means the highest of (a) the highest
reported sales price, regular way, of a share of Stock in any transaction reported on the principal securities exchange or market on which such shares are listed during the 60-day period prior to and including the date of a Change in Control,
(b) if the Change in Control is the result of a tender or exchange offer, the highest price per share of Stock paid in such tender or exchange offer, and (c) the Market Value of a share of Stock upon the Change in Control. To the extent
that the consideration paid in any such transaction described above consists all or in part of securities or other non-cash consideration, the value of such securities or other non-cash consideration shall be determined in the sole discretion of the
Board. 
 8.3. Dissolution or Liquidation. Upon dissolution or liquidation of the Company,
other than as part of an Acquisition or similar transaction, each outstanding Option shall terminate, but the Optionee (if at the time in the employ of or otherwise associated with the Company or any of its Affiliates) shall have the right,
immediately prior to the dissolution or liquidation, to exercise the Option to the extent exercisable on the date of dissolution or liquidation. 

  
 - 10 -

  
 8.4.
Adjustment of Awards Upon the Occurrence of Certain Unusual or Nonrecurring Events. In the event of any corporate action not specifically covered by Sections 8.1,
8.2 or 8.3 hereof, including but not limited to an extraordinary cash distribution on Stock, a corporate separation or other reorganization or liquidation, the Committee may make such adjustment of outstanding Awards and their terms, if any, as it,
in its sole discretion, may deem equitable and appropriate in the circumstances. 
 8.5. Related
Matters. Any adjustment in Awards made pursuant to this Section 8 shall be determined and made, if at all, by the Committee and shall include any correlative modification of terms, including of Option exercise prices, rates of vesting or
exercisability, Risks of Forfeiture and applicable repurchase prices for Restricted Stock, which the Committee may deem necessary or appropriate so as to ensure the rights of the Participants in their respective Awards are not substantially
diminished nor enlarged as a result of the adjustment and corporate action other than as expressly contemplated in this Section 8. No fraction of a share shall be purchasable or deliverable upon exercise, but in the event any adjustment
hereunder of the number of shares covered by an Award shall cause such number to include a fraction of a share, such number of shares shall be adjusted to the nearest smaller whole number of shares. No adjustment of an Option exercise price per
share pursuant to this Section 8 shall result in an exercise price that is less than the par value of the Stock. 
  

	9.	 Settlement of Awards 

 9.1. Violation of Law. Notwithstanding any other provision of the Plan or the relevant Award Agreement, if, at any time, in the reasonable opinion of the Company, the issuance of
shares of Stock covered by an Award may constitute a violation of law, then the Company may delay such issuance and the delivery of a certificate for such shares until (a) approval shall have been obtained from such governmental agencies, other
than the Securities and Exchange Commission, as may be required under any applicable law, rule, or regulation and (b) in the case where such issuance would constitute a violation of a law administered by or a regulation of the Securities and
Exchange Commission, one of the following conditions shall have been satisfied: 
 (a) the shares are at the
time of the issue of such shares effectively registered under the Securities Act of 1933, as amended; or 
 (b)
the Company shall have determined, on such basis as it deems appropriate (including an opinion of counsel in form and substance satisfactory to the Company) that the sale, transfer, assignment, pledge, encumbrance or other disposition of such shares
or such beneficial interest, as the case may be, does not require registration under the Securities Act of 1933, as amended, or any applicable State securities laws. 
 The Company shall make all reasonable efforts to bring about the occurrence of said events. 
 9.2. Corporate Restrictions on Rights in Stock. Any Stock to be issued pursuant to Awards granted under the Plan shall be subject to all restrictions upon the
transfer thereof that may be now or hereafter imposed by the certificate of incorporation and by-laws of the Company. Whenever Stock is to be issued pursuant to an Award, if the Committee so directs at or after grant, the Company shall be under no
obligation to issue such shares until such time, if ever, as the recipient of the Award (and any person who exercises any Option, in whole or in part), shall have become a party to and bound by the Stockholders Agreement, if any. In the event of any
conflict between the provisions of this Plan and the provisions of the Stockholders Agreement, the provisions of the Stockholders Agreement shall control except as required to fulfill the intention that this Plan constitute an incentive stock option
plan within the meaning of Section 422 of the Code, but insofar as possible the provisions of the Plan and such Agreement shall be construed so as to give full force and effect to all such provisions. 

  
 - 11 -

  
 9.3.
Investment Representations. The Company shall be under no obligation to issue any shares covered by any Award unless the shares to be issued pursuant to Awards granted under the Plan have been effectively registered under the
Securities Act of 1933, as amended, or the Participant shall have made such written representations to the Company (upon which the Company believes it may reasonably rely) as the Company may deem necessary or appropriate for purposes of confirming
that the issuance of such shares will be exempt from the registration requirements of that Act and any applicable state securities laws and otherwise in compliance with all applicable laws, rules and regulations, including but not limited to that
the Participant is acquiring the shares for his or her own account for the purpose of investment and not with a view to, or for sale in connection with, the distribution of any such shares. 

9.4. Registration. If the Company shall deem it necessary or desirable to register under the Securities Act of
1933, as amended, or other applicable statutes any shares of Stock issued or to be issued pursuant to Awards granted under the Plan, or to qualify any such shares of Stock for exemption from the Securities Act of 1933, as amended, or other
applicable statutes, then the Company shall take such action at its own expense. The Company may require from each recipient of an Award, or each holder of shares of Stock acquired pursuant to the Plan, such information in writing for use in any
registration statement, prospectus, preliminary prospectus or offering circular as is reasonably necessary for that purpose and may require reasonable indemnity to the Company and its officers and directors from that holder against all losses,
claims, damage and liabilities arising from use of the information so furnished and caused by any untrue statement of any material fact therein or caused by the omission to state a material fact required to be stated therein or necessary to make the
statements therein not misleading in the light of the circumstances under which they were made. In addition, the Company may require of any such person that he or she agree that, without the prior written consent of the Company or the managing
underwriter in any public offering of shares of Stock, he or she will not sell, make any short sale of, loan, grant any option for the purchase of, pledge or otherwise encumber, or otherwise dispose of, any shares of Stock during the one hundred
eighty (180) day period commencing on the effective date of the registration statement relating to the underwritten public offering of securities. Without limiting the generality of the foregoing provisions of this Section 9.4, if in
connection with any underwritten public offering of securities of the Company the managing underwriter of such offering requires that the Company’s directors and officers enter into a lock-up agreement containing provisions that are more
restrictive than the provisions set forth in the preceding sentence, then (a) each holder of shares of Stock acquired pursuant to the Plan (regardless of whether such person has complied or complies with the provisions of clause (b) below)
shall be bound by, and shall be deemed to have agreed to, the same lock-up terms as those to which the Company’s directors and officers are required to adhere; and (b) at the request of the Company or such managing underwriter, each such
person shall execute and deliver a lock-up agreement in form and substance equivalent to that which is required to be executed by the Company’s directors and officers. 

9.5. Placement of Legends; Stop Orders; etc. Each share of Stock to be issued
pursuant to Awards granted under the Plan may bear a reference to the investment representation made in accordance with Section 9.3 hereof in addition to any other applicable restriction under the Plan, the terms of the Award and, if
applicable, under the Stockholders Agreement and to the fact that no registration statement has been filed with the Securities and Exchange Commission in respect to such shares of Stock. All certificates for shares of Stock or other securities
delivered under the Plan shall be subject to such stock transfer orders and other restrictions as the Committee may deem advisable under the rules, regulations, and other requirements of any stock exchange or market upon which the Stock is then
listed, and any applicable federal or state securities law, and the Committee may cause a legend or legends to be put on any such certificates to make appropriate reference to such restrictions. 

9.6. Tax Withholding. Whenever shares of Stock are issued or to be issued pursuant to Awards granted under
the Plan, the Company shall have the right to require the recipient to remit to the 

  
 - 12 -

 
Company an amount sufficient to satisfy federal, state, local or other withholding tax requirements if, when, and to the extent required by law (whether so required to secure for the Company an
otherwise available tax deduction or otherwise) prior to the delivery of any certificate or certificates for such shares. The obligations of the Company under the Plan shall be conditional on satisfaction of all such withholding obligations and the
Company shall, to the extent permitted by law, have the right to deduct any such taxes from any payment of any kind otherwise due to the recipient of an Award. However, in such cases Participants may elect, subject to the approval of the Committee,
acting in its sole discretion, to satisfy an applicable withholding requirement, in whole or in part, by having the Company withhold shares to satisfy their tax obligations. Participants may only elect to have shares withheld having a Market Value
on the date the tax is to be determined equal to the minimum statutory total tax which could be imposed on the transaction. All elections shall be irrevocable, made in writing, signed by the Participant, and shall be subject to any restrictions or
limitations that the Committee deems appropriate. 
  

	10.	 Reservation of Stock 

 The Company shall at all times during the term of the Plan and any outstanding Options granted hereunder reserve or otherwise keep available such number of shares of Stock as will be sufficient to satisfy
the requirements of the Plan (if then in effect) and the Options and shall pay all fees and expenses necessarily incurred by the Company in connection therewith. 
  

	11.	 No Special Employment or Other Rights 

Nothing contained in the Plan or in any Award Agreement shall confer upon any recipient of an Award any right with respect
to the continuation of his or her employment or other association with the Company (or any Affiliate), or interfere in any way with the right of the Company (or any Affiliate), subject to the terms of any separate employment or consulting agreement
or provision of law or certificate of incorporation or by-laws of the Company, to the contrary, at any time to terminate such employment or consulting agreement or to increase or decrease, or otherwise adjust, the other terms and conditions of the
recipient’s employment or other association with the Company and its Affiliates. 
  

	12.	 Nonexclusivity of the Plan 

 Neither the adoption of the Plan by the Board nor the submission of the Plan to the stockholders of the Company shall be construed as creating any limitations on the power of the Board to adopt such other
incentive arrangements as it may deem desirable, including without limitation, the granting of stock options and restricted stock other than under the Plan, and such arrangements may be either applicable generally or only in specific cases.

  

	13.	 Termination and Amendment of the Plan 

The Board may at any time terminate the Plan or make such modifications of the Plan as it shall deem advisable. Unless the
Board otherwise expressly provides, no amendment of the Plan shall affect the terms of any Award outstanding on the date of such amendment. In any case, no termination or amendment of the Plan may, without the consent of any recipient of an Award
granted hereunder, adversely affect the rights of the recipient under such Award. 
 The Committee may amend the
terms of any Award theretofore granted, prospectively or retroactively, provided that the Award as amended is consistent with the terms of the Plan, but no such amendment shall impair the rights of the recipient of such Award without his or her
consent. 

  
 - 13 -

  

	14.	 Notices and Other Communications 

 Any notice, demand, request or other communication hereunder to any party shall be deemed to be sufficient if contained in a written instrument delivered in person or duly sent by first class registered,
certified or overnight mail, postage prepaid, or telecopied with a confirmation copy by regular, certified or overnight mail, addressed or telecopied, as the case may be, (a) if to the recipient of an Award, at his or her residence address last
filed with the Company and (b) if to the Company, at its principal place of business, addressed to the attention of its Treasurer, or to such other address or telecopier number, as the case may be, as the addressee may have designated by notice
to the addressor. All such notices, requests, demands and other communications shall be deemed to have been received: (a) in the case of personal delivery, on the date of such delivery; (b) in the case of mailing, when received by the
addressee; and (c) in the case of facsimile transmission, when confirmed by facsimile machine report. 
  

	15.	 Provisions Applicable to Award Recipients Resident in California 

Until such time as the Company’s Stock has been effectively registered under the Securities Act of 1933, as amended,
and if required by any applicable law, the following additional terms shall apply to Awards, and Stock issued pursuant to such Awards, granted under the Plan to persons resident in California as of the date of grant of the Award (each such person, a
“California Recipient”). 
 15.1. In the event of an Option that is: 

(a) granted to a California Recipient who, as of the Grant Date, owns securities possessing more than ten percent
(10%) of the total combining voting power to vote for the election of directors of the Company (a “CA Ten Percent Owner”), the price at which shares of Stock may be acquired under such Option shall not be
less than one hundred ten percent (110%) of the “fair value” (determined consistent with Section 260.140.50 of the California Code of Regulations) of the Stock on the Grant Date; and 

(b) granted to any other California Recipient, the price at which shares of Stock may be acquired under such Option shall
not be less than eighty five percent (85%) of the “fair value” (similarly determined) of the Stock on the Grant Date. 
 15.2. In the event that an Award of Restricted Stock is granted to a California Recipient, the price at which shares of Stock may be acquired under such Award shall not be less than eighty five percent
(85%) of the Market Value of the Stock on the date such award is granted, or, in the case of a Ten Percent Owner, the price shall not be less than one hundred percent (100%) of the Market Value of the Stock on the date such Award is
granted. Stock Grants shall not be available to California Recipients. 
 15.3. If an Option is issued to any
California Recipient who is not an officer, director, manager or consultant of the Company, such Option shall become exercisable at the rate of at least twenty percent (20%) per year over five years from the Grant Date. If an Award of
Restricted Stock is issued to any California Recipient who is not an officer, director, manager or consultant of the Company, any repurchase option in favor of the Company shall lapse at the rate of at least twenty percent (20%) per year over
five (5) years from the date of the Award, shall be exercisable for at most ninety (90) days following termination of employment (or if the Award is issued after termination of employment, following the date of issuance) and shall be
exercisable (at a repurchase price that is (a) not less than the fair market value of the Restricted Stock on the date of such termination or (b) at least the original purchase price) solely for cash or cancellation of purchase money
indebtedness. 

  
 - 14 -

  
 15.4.
No Option issued to any California Recipient shall be transferable other than by gift to an immediate family member as that term is defined under applicable California securities law (or by will or the laws of descent and distribution). No other
right to acquire Stock pursuant to an Award granted a California Recipient shall be transferable other than by will or the laws of descent and distribution. 
 15.5. The following limitations shall apply to the early expiration of Options granted California Recipients on account of termination of employment (unless employment is terminated for cause as defined
by applicable law): 
 (a) Subject to Section 15.5(b) below, in the event the employment or other
association with the Company and its Affiliates of an Optionee who is a California Recipient is terminated, whether voluntary or otherwise and including on account of an entity ceasing to be an Affiliate of the Company, such California Recipient
shall have at least thirty (30) days after the date of such termination (but in no event later than the expiration of the term of such Option as set forth in the Award Agreement) to exercise such Option to the extent exercisable as of the date
of such termination. 
 (b) In the event that the employment or association with the Company and its Affiliates
of an Optionee who is a California Recipient is terminated as a result of death or disability, such California Recipient shall have at least six (6) months after the date of such termination (but in no event later than the expiration of the
term of such Option as set forth in the Award Agreement) to exercise such Option to the extent exercisable as of the date of such termination. 
 15.6. The Company shall provide financial statements at least annually to each California Recipient during the period he or she holds any Award under the Plan, or any Stock acquired pursuant to an Award
granted under the Plan. The Company shall not be required to provide such information if the issuance of Awards under the Plan is limited to key employees whose duties in connection with the Company assure their access to equivalent information. All
information provided to California Recipients under the Plan shall be confidential information of the Company and may not be used or disclosed by any California Recipient, unless and until such information is made publicly available by the Company.
The Company may require any California Recipient to acknowledge in writing the foregoing obligations. 
 15.7.
The Plan must be approved by the holders of a majority of the outstanding securities entitled to vote within twelve (12) months before or after the date the Plan is adopted by the Company. 

 

	16.	 Governing Law 

 The Plan and all Award Agreements and actions taken thereunder shall be governed, interpreted and enforced in accordance with the laws of the Commonwealth of Massachusetts without regard to the conflict
of laws principles thereof. 

  
 - 15 -

  
 KAYAK SOFTWARE
CORPORATION 
 FIRST AMENDMENT 
 TO THE 
 2005 THIRD AMENDED AND RESTATED EQUITY INCENTIVE PLAN 

WHEREAS, up to 5,364,496 shares of Common Stock, par value $0.001 per share, of Kayak Software Corporation, a Delaware
corporation (the “Company”), are currently reserved under the Company’s 2005 Third Amended and Restated Equity Incentive Plan (the “Plan”); and 

WHEREAS, the Board of Directors of the Company, at a meeting held January 31 2008, and the stockholders of the
Company, by written consent dated as of April 15, 2008 approved and authorized this First Amendment to the Plan, pursuant to which the number of shares reserved under the Plan shall be increased as set forth herein. 

NOW THEREFORE, the Plan is hereby amended and restated as follows: 

In Section 4 of the Plan, the number “5,364,496” is hereby deleted and replaced with the number
“5,614,496.” 
 Except as expressly set forth above, all of the terms and provisions of the Plan shall
remain in full force and effect and all references to the Plan shall hereinafter be deemed to be references to the Plan as amended by this First Amendment. 

  
 KAYAK SOFTWARE
CORPORATION 
 SECOND AMENDMENT 
 TO THE 
 2005 THIRD AMENDED AND RESTATED EQUITY INCENTIVE PLAN 

WHEREAS, up to 5,614,496 shares of Common Stock, par value $0.001 per share, of Kayak Software Corporation, a Delaware
corporation (the “Company”), are currently reserved under the Company’s 2005 Third Amended and Restated Equity Incentive Plan (the “Plan”); and 

WHEREAS, the Board of Directors of the Company, at a meeting held January 31 2008, and the stockholders of the
Company, by written consent dated as of April 15, 2008 approved and authorized this First Amendment to the Plan, pursuant to which the number of shares reserved under the Plan shall be increased as set forth herein. 

NOW THEREFORE, the Plan is hereby amended and restated as follows: 

In Section 4 of the Plan, the number “5,614,496” is hereby deleted and replaced with the number
“6,614,496.” 
 Except as expressly set forth above, all of the terms and provisions of the Plan shall
remain in full force and effect and all references to the Plan shall hereinafter be deemed to be references to the Plan as amended by this First Amendment. 

  
 KAYAK SOFTWARE
CORPORATION 
 THIRD AMENDMENT 
 TO THE 
 2005 THIRD AMENDED AND RESTATED EQUITY INCENTIVE PLAN 

WHEREAS, up to 6,614,496 shares of Common Stock, par value $0.001 per share, of Kayak Software Corporation, a Delaware
corporation (the “Company”), are currently reserved under the Company’s 2005 Third Amended and Restated Equity Incentive Plan (the “Plan”); and 

WHEREAS, the Board of Directors of the Company, at a meeting held August 27, 2008, and the stockholders of the
Company, by written consent dated as of October 16, 2008 approved and authorized this Third Amendment to the Plan, pursuant to which the number of shares reserved under the Plan shall be increased as set forth herein. 

NOW THEREFORE, the Plan is hereby amended and restated as follows: 

In Section 4 of the Plan, the number “6,614,496” is hereby deleted and replaced with the number
“7,814,496.” 
 Except as expressly set forth above, all of the terms and provisions of the Plan shall
remain in full force and effect and all references to the Plan shall hereinafter be deemed to be references to the Plan as amended by this Third Amendment. 

  
 KAYAK SOFTWARE
CORPORATION 
 FOURTH AMENDMENT 
 TO THE 
 2005 THIRD AMENDED AND RESTATED EQUITY INCENTIVE PLAN 

WHEREAS, up to 7,814,496 shares of Common Stock, par value $0.001 per share, of Kayak Software Corporation, a Delaware
corporation (the “Company”), are currently reserved under the Company’s 2005 Third Amended and Restated Equity Incentive Plan, as amended (the “Plan”); and 

WHEREAS, the Board of Directors of the Company, at a meeting held July 22, 2009, and the stockholders of the
Company, by written consent dated as of October 30, 2009 approved and authorized this Fourth Amendment to the Plan, pursuant to which the number of shares reserved under the Plan shall be increased as set forth herein. 

NOW THEREFORE, the Plan is hereby amended and restated as follows: 

In Section 4 of the Plan, the number “7,814,496” is hereby deleted and replaced with the number
“8,214,496.” 
 Except as expressly set forth above, all of the terms and provisions of the Plan shall
remain in full force and effect and all references to the Plan shall hereinafter be deemed to be references to the Plan as amended by this Fourth Amendment. 

  
 KAYAK SOFTWARE
CORPORATION 
 FIFTH AMENDMENT 
 TO THE 
 2005 THIRD AMENDED AND RESTATED EQUITY INCENTIVE PLAN 

WHEREAS, up to 8,214,496 shares of Common Stock, par value $0.001 per share, of Kayak Software Corporation, a Delaware
corporation (the “Company”), are currently reserved under the Company’s 2005 Third Amended and Restated Equity Incentive Plan, as amended (the “Plan”); and 

WHEREAS, the Board of Directors of the Company, at a meeting held on December 9, 2009, and the stockholders of the
Company, by written consent dated as of February 11, 2010 approved and authorized this Fifth Amendment to the Plan, pursuant to which the number of shares reserved under the Plan shall be increased as set forth herein. 

NOW THEREFORE, the Plan is hereby amended and restated as follows: 

In Section 4 of the Plan, the number “8,214,496” is hereby deleted and replaced with the number
“10,000,000.” 
 Except as expressly set forth above, all of the terms and provisions of the Plan
shall remain in full force and effect and all references to the Plan shall hereinafter be deemed to be references to the Plan as amended by this Fifth Amendment. 

  
 KAYAK SOFTWARE
CORPORATION 
 SIXTH AMENDMENT 
 TO THE 
 2005 THIRD AMENDED AND RESTATED EQUITY INCENTIVE PLAN 

WHEREAS, up to 10,000,000 shares of Common Stock, par value $0.001 per share, of Kayak Software Corporation, a Delaware
corporation (the “Company”), are currently reserved under the Company’s 2005 Third Amended and Restated Equity Incentive Plan, as amended (the “Plan”); and 

WHEREAS, the Board of Directors of the Company, at a meeting held on September 17, 2010, 2010, and the stockholders
of the Company, by written consent dated as of October 1, 2010 approved and authorized this Sixth Amendment to the Plan, pursuant to which the number of shares reserved under the Plan shall be increased as set forth herein. 

NOW THEREFORE, the Plan is hereby amended and restated as follows: 

In Section 4 of the Plan, the number “10,000,000” is hereby deleted and replaced with the number
“12,000,000.” 
 Except as expressly set forth above, all of the terms and provisions of the Plan
shall remain in full force and effect and all references to the Plan shall hereinafter be deemed to be references to the Plan as amended by this Sixth Amendment.Services Agreement

  
 Exhibit 10.4

 CONFIDENTIAL TREATMENT 
 SERVICES AGREEMENT 
 This SERVICES AGREEMENT
(“Agreement”), made as of the 3rd day of March, 2005 by and between Kayak Software Corporation. a Delaware corporation with its address at 27 Ann Street, Norwalk, CT 06854 (“Kayak”) and ITA Software, Inc., a Delaware corporation
with its address at 141 Portland Street, 7th Floor, Cambridge, MA 02139 (“ITA”). 
 WHEREAS, ITA has developed a
software product known as “ITA Travel Planning Software”, which has a capability to search, select, sort and price air fares and determine seat availability; and 
 WHEREAS, Kayak operates internet web sites, such as http://www.kayak.com, that allow users to search for travel-related fare and booking information from a variety of airlines and other travel
service providers, and facilitates bookings by connecting users to those airlines and other travel service providers; 

WHEREAS, Kayak wishes to obtain the ability to submit queries to ITA’s software and to receive responses thereto, and to use the
information obtained from ITA to support its customers and end users; 
 NOW, THEREFORE, in consideration of the foregoing the parties hereby
agree as follows: 
 1. DEFINITIONS 
 (a) Agreement Month” means each one-month period during an Agreement Year. The first Agreement Month will be prorated if the date of this Agreement does not occur on the first day of a calendar
month. 
 (b) “Agreement Year” means, (i) in the case of the first Agreement Year, the period beginning on the
Service Fee Commencement Date and ending on the last day of the twelfth Agreement Month; and (ii) thereafter, each successive period of twelve Agreement Months during the term of this Agreement. 

(C) “Documentation” means functional specifications, user manuals, flow diagrams, file descriptions, and similar written
materials relating to the operation of the ITA Software. Current versions of such Documentation are made available at http://doc.itasoftware.com. 
 (d) “Domestic Location” means a location that is within the United States (including Hawaii, Puerto Rico and the US Virgin Islands) or Canada. 

(e) []*. 

  
 * 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. 

  
 (f) “Insolvency
Event”, with respect to either party, means any of the following: (i) such party at any time ceases to conduct business in the ordinary course; (ii) such party files a voluntary petition in bankruptcy or any voluntary proceeding
relating to insolvency, receivership, liquidation or composition for the benefit of creditors; or (iii) such party becomes the subject of an involuntary petition in bankruptcy or any involuntary proceeding relating to insolvency, receivership,
liquidation or composition ion for the benefit of creditors, if such petition or proceeding is not dismissed within sixty (60) days of filing. 
 (g) ‘‘International Location” means a location that is not a Domestic Location. 
 (h) []*. 
 (i )“ITA Software” means, at any time, the then-current
version of ITA’s Travel Planning Software product and related software products (including availability management software), all as described more fully in the Documentation. The ITA Software does not include the following: (i) fare
management capabilities that are part of ITA’s Rule and Fare Display system, and (ii) refund/reissue capability using ATPCO Category 31. 
 (j ) “Online Users” means end users (i.e. persons not in the business of providing travel services to others) who access the ITA Software at the Site for the purpose of viewing fares, schedules,
seat availability, or purchasing air travel. 
 (k) “Participating Carrier” means any airline which has consented in
writing, in form and substance reasonably satisfactory to ITA, to ITA’s unconditional use of the airline’s fare, schedule and availability data for the provision of services to Kayak described herein, which consent shall be Kayak’s
responsibility to obtain; provided, however, that in the case of carriers which use “seamless availability”, ITA’s Dynamic Availability Calculating Server (DACS) or numeric availability (NAVS), Kayak will be granted until
April 1, 2005 to obtain such consents; and provided further, however, that in the case of carriers which use “AVS” availability messaging, such carriers shall be assumed to have consented unless they have informed either ITA or Kayak
of their withholding of such consent. If, at any time, an airline informs Kayak and/or ITA that it no longer consents to ITA’s use of its data on behalf of Kayak and/or demands that ITA cease its provision of such data to Kayak, the party to
whom such notice has been given shall inform the other within seven days, and such airline shall not be considered a Participating Carrier for the purposes of this Agreement unless and until such time as Kayak obtains fresh consent for the use of
its data as set forth in this definition. 
 (l) []* has the meaning set forth in Section 4(b)(ii). 

(m )“Query” means either a “Fare Search”, a “Low Fare Search”, or a “Schedule Search” (as such
terms are defined in the Documentation) by an Online User to the ITA Software; provided, that “Query” will exclude (i) test queries posed by Kayak to the Licensed Software and (ii) queries posed to the Licensed Software by ITA in
connection with its monitoring of the Licensed Software, “Query” will also include the functionality known as “text rule lookup.” 
 (n) “Service Fee Commencement Date” means March 15, 2005. 

  
 -2-

 * 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. 

  
 (o) “Site”
means any interactive product, site or area, including, by way of example and without limitation, a site on the World Wide Web portion of the Internet, that is managed, maintained, owned, powered, or controlled by Kayak or its agents, including the
web site located at the URL address www.kayak.com and any third party sites that utilize functionality provided by Kayak (e.g. AOL Pinpoint Travel). Notwithstanding the above, “Site” specifically excludes interactive products,
sites, or areas operated by airlines, global distribution systems (GDSs), travel agencies, corporate travel departments, and other persons or entities other than Kayak or its agents who are in the business of providing travel-related services to end
users of such services. 
 (p) “SOWs” has the meaning set forth in Section 3(h). 

(q) “URL” means a uniform resource locator. 
 2. SERVICES TO BE PROVIDED 
 (a) Description of Services. ITA agrees
that Kayak is granted a nonexclusive right to access the ITA Software and submit Queries about Participating Carriers to the ITA Software, and that ITA will operate the ITA Software and return responses about Participating Carriers to Kayak; such
Queries and responses to be in accordance with the Documentation. ITA will not be obligated to return responses that include any carriers other than Participating Carriers. Except as provided herein and in Exhibit B, Kayak will not be obligated to
pay any service, license or other fees for the rights granted hereby. Kayak will use the responses returned by the ITA Software to provide travel planning and related services to Online Users, and for no other purpose. Except as provided herein and
in Exhibit B, Kayak will not be obligated to pay any service, license or other fees for the rights granted hereby. 
 (b)
Excluded Services. Kayak (or its third party vendors, outsourcers and other service providers), and not ITA, will be responsible for creating any graphical user interfaces (GUIs) to the ITA Software, as well as any booking interfaces to be
used with the ITA Software, subject to all the other restrictions and conditions contained in this Agreement. Kayak will be the sole and exclusive owner of all rights in and to any such GUIs and booking interfaces. ITA shall provide reasonable
assistance to Kayak with respect to the application program interface (API) to the ITA Software (but not with respect to any of the other excluded services described in this Section 2(c)), at no additional cost except as agreed to in an SOW.

 (c) Private Fares. ITA Software will process private fares for Kayak if such fares are filed through ATPCO.

 (d) Documentation. When ITA upgrades to a new version of the ITA Software, ITA shall supply to Kayak, at no additional
charge, such Documentation in electronic format) as it provides to its customers generally. Kayak shall have the right to make such additional copies of the Documentation for its own internal use as it may reasonably require. In no event will any
upgrade result in a diminution of the Services provided to Kayak hereunder. 
 (e) Statements of Work. From time to time,
Kayak may request, and ITA may agree to perform, services relating to the ITA Software, including but not limited to development and operations support required by Kayak to develop or customize the ITA Software to Kayak’s

  
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requirements. The provision of such services shall be governed by statements of work agreed to by both parties, a form of which is attached hereto as Exhibit A (“SOWs”). Unless
expressly so stated in an SOW, in the case of any conflict between the terms of an SOW and the terms hereof, the terms of the SOW will govern. 
 (f) Software Maintenance, Data and Operations. ITA shall be solely responsible for (i) operating the ITA Software at its data center, and (ii) providing and managing data required for such
operation of the ITA Software and (iii) providing software maintenance and technical support services, all in accordance with the provisions of Exhibit B. 
 3. OWNERSHIIP OF ITA SOFTWARE 
 Kayak claims no ownership rights in or to
the ITA Software and acknowledges that other than the rights granted hereby, no proprietary rights (including but not limited to copyrights and patents) in the ITA Software are being transferred to Kayak. ITA acknowledges that other than the ITA
Software, all Kayak services and software developed solely by Kayak or its contractors, including any GUI interfaces to the ITA Software or booking interfaces and any other developments b Kayak (“Kayak Developments”) are owned b Kayak and
no proprietary rights in such Kayak Developments are transferred to ITA hereunder. 
 4. FEES AND EXPENSES 

(a) Deposit. Kayak shall pay ITA []* upon the execution of this Agreement. Such payment will be non-refundable in the event of any
termination of this Agreement, other than a termination for cause pursuant to Section 5(c). []* of such payment will be held by ITA as a non-interest-bearing advance payment to be applied to the last payment due hereunder; provided, that if any
payment is not made by Kayak within 30 days of the date due hereunder ITA may, at its option, apply such []* (or any portion thereof) to the payment due and Kayak will, promptly upon notice from ITA, replenish such advance so that []* remains at all
times on deposit. The remaining []* of such payment will be applied to the first payment of the fixed Service Fee pursuant to Section 4(b). 
 (b) Service Fee. Kayak shall pay for use of the ITA Software []*, subject to a monthly Minimum Service Fee as set forth below: 

(i) Minimum Service Fee. Commencing on the Service Fee Commencement Date, Kayak shall pay a minimum service fee for the Software
(the “Minimum Service Fee”) in the amount of []* per Agreement Month, which will be prorated with respect to any partial Agreement Months. The Minimum Service Fee for the first Agreement Month will be paid by crediting the []* advance
payment (or a ratable portion thereof, in the event the first Agreement Month is shorter than a calendar month) pursuant to the last sentence of Section 4(a) and the remainder of the []* if any, following proration, shall be applied to the
Minimum Service Fee for the second Agreement Month. The Minimum Service Fee will be payable monthly in advance, on the first day of each Agreement Month. 
 (ii) [ ]*. 

  
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 (c) Payment
Terms. Within 15 days after the end of each Agreement Month, ITA will inform Kayak of []*. Within 30 days after its receipt of such notification, Kayak will pay ITA []*. 
 (d) Audit Rights. Kayak will have the right, on not more than one occasion during each Agreement Year, to retain a public accounting firm to audit ITA’s calculation of Queries, in which event
ITA will make available to such firm the records upon which such certifications were based. The expense of any such audit will be borne by Kayak, except that ITA will bear the reasonable expense of such audit in the event that such auditors
determine that the number of Queries were overreported by ITA by more than 10%. 
 (e) Services. Kayak shall pay ITA the
fees set forth in the applicable SOW for any services provided pursuant to Section 2(f). ITA’s hourly rate for services is presently []* per hour. 
 (f) Reimbursable Costs and Expenses. Unless otherwise specified in the applicable SOW, in addition to the hourly rates described in the applicable SOW, Kayak shall pay the reasonable actual
out-of-pocket expenses incurred by ITA in rendering services to Kayak pursuant to any SOW, including without limitation costs of travel, provided that such expenses are incurred in accordance with Kayak’s then-current standard policy regarding
such reimbursable expenses. Kayak agrees to provide ITA advance notice of any modifications to such policies. ITA agrees to support its invoices of such expenses with copies of receipts and, upon request. provide Kayak with access to such original
receipts, ledgers, and other records as may be reasonably appropriate for Kayak or its accountants to verify the amount and nature of any such expenses. 
 (g) Maintenance; Data; Operations. Charges relating to provision of maintenance and support, provision and management of data to the ITA Software, and ITA’s operation of the ITA
Software (such as computers. communications, facilities, monitoring, operational support and maintenance, etc.) shall be set forth in Exhibit B. 
 (h) Invoicing. ITA shall invoice Kayak on a monthly basis for all fees and charges accruing hereunder, including under Exhibit B, or pursuant to an SOW, and Kayak shall pay all undisputed portions
of such invoiced amounts within thirty (30) days after receipt of invoice, In the event of a good faith dispute, as to any portion of an invoice, Kayak shall give written notice to ITA, within thirty (30) days after receiving such invoice,
stating the details of any such dispute, and shall pay any undisputed amount in accordance with this Agreement. Failure by Kayak to provide such written notice shall result in a waiver of any dispute with the invoice in question. 

(i) Taxes. Kayak shall be responsible for the payment of any federal, state or local taxes (other than taxes based on ITA’s
income) assessed on the Licensed Software or services provided under this Agreement. 

  
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 5. TERM AND
TERMINATION 
 (a) Term of Agreement. The term of this Agreement shall commence on the date hereof, and this Agreement
and the rights granted to Kayak hereunder and shall terminate at the end of the third Agreement Year. Thereafter, Kayak will have the right to extend this Agreement for additional two-year renewal terms, as follows: at least six months prior to the
expiration of the initial term or any renewal term, Kayak may notify ITA of its intent to renew this Agreement. In such event, ITA and Kayak will work together in good faith to agree upon the pricing terms that will be applicable to the renewal
term, which shall be comparable to terms which ITA makes available to other customers similarly situated. If the parties are unable, despite good faith negotiations, to agree on the pricing terms applicable to the renewal term, then this Agreement
will not renew. 
 (b) Term of SOWs. Unless specified otherwise in an SOW or earlier terminated in accordance with this
Agreement, each SOW shall remain in full force and effect until expiration of this Agreement or until performance is completed and deliverables are accepted, whichever is later. 

(c) Termination for Cause by Kayak, This Agreement and the rights granted hereunder may be terminated by Kayak for cause
immediately by written notice in the event (i) ITA fails to make the ITA Software available to Kayak, and such breach is not cured within thirty (30) days after receipt of written notice thereof from Kayak; (ii) ITA materially
breaches Section 2.1(b) of Exhibit B (which requires ITA to keep the lTA Software current so as to correctly process changes in industry-standard practices and or data formats) and as a result the ITA Software returns answers that are not
“correct” (as declined in Section 5.3(b) of Exhibit B) in a material percentage of cases (i.e. in excess of 15% of results over a 24 four period) and such breach is not cured within thirty (30) days after receipt of written
notice thereof from Kayak; (iii) on more than three occasions within any thirty-day period, ITA fails to respond to and use its reasonable commercial efforts to resolve emergency problems as required by Section 5.3(a) of Exhibit B in
accordance with the standards set forth therein, and such breach is not cured within ten (10) days of written notice thereof from Kayak; (iv) an Insolvency Even occurs with respect to ITA; or (v) there is a default under
Section 6 (b)(v). In the event of termination by Kayak pursuant to this Section 5(c), ITA shall refund to Kayak any Service Fees or other fees paid by Kayak which have been paid in advance by Kayak and have not been earned as of the
effective date of termination. 
 (d) Termination for Cause by ITA. This Agreement may be terminated by ITA for cause
immediately by written notice in the event (i) Kayak materially breaches the payment obligations set forth in Section 4 or in Exhibit B, and such breach is not cured within fifteen (15) days after receipt of written notice thereof
from ITA; (ii) Kayak materially breaches the confidentiality obligations set forth in Section 9, so as to cause material damage to ITA, and such breach is not cured within thirty (30) days after receipt of written notice thereof from
ITA; or (iii) an Insolvency Event occurs with respect to Kayak. 
 (e) Terminations of SOWs. Either party may
terminate an SOW in the event the other party materially breaches any provision thereof and fails to cure such breach within thirty (30) days after receipt of written notice thereof from the non-breaching party. 

  
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 (f) Duties on
Termination. Upon termination of this Agreement for any reason, Kayak shall immediately cease sending Queries to the ITA Software, and all rights granted hereunder shall immediately cease and termination. Notwithstanding the foregoing, upon
termination by Kayak pursuant to Section 5(c), if Kayak so requests. ITA shall provide to Kayak at ITA’s then-standard rates and upon Kayak’s continued payment of the fees provided in Section 5, reasonable termination assistance,
including the right to continue to send Queries the lTA Software as set forth herein, for a period of up to six (6) months following the effective date of termination. 
 (g) Survival. The parties’ rights and obligations under this provision and the following sections shall survive the termination or expiration of this Agreement: 3, 7, 8, 9, 10, 12, and 13.

 6. REPRESENTATIONS AND WARRANTIES 
 (a) By Kayak. Kayak represents and warrants to ITA that it has the full right, power and authority to enter into this Agreement and to perform its obligations hereunder and that Kayak’s
compliance with the terms and conditions of this Agreement will not violate any federal, state or local laws, regulations or ordinances or conflict with any third party agreements. 

(b) By ITA. ITA represents, warrants and covenants to Kayak as follows: 

(i) Authority: That: (1) ITA has the full right, power and authority to enter into this Agreement, to carry out its
obligations under this Agreement and to grant the rights granted to Kayak in this Agreement; and (2) ITA’s compliance with the terms and conditions of this Agreement shall not violate any federal, slate or local laws, regulations or
ordinances or conflict with any third party agreements. 
 (ii) Quality: That ITA shall perform all services in a good,
workmanlike and professional manner using people fully familiar with the ITA Software and the underlying technology. 
 iii)
Century Compliance: That the century change is, and shall be, supported in the Licensed Software’s logic and data, and that the Licensed Software shall support the use, entry or creation of dates prior to, on, after or spanning
January 1, 2000, so that when such a date is either processed including by way calculation, comparison, sequencing, display, storage or otherwise), entered into, or is intended to be generated as a result of the operation of the Licensed
Software, the Licensed Software shall not (I) fail or produce incorrect date results, or (2) cause any other programs, hardware or system to fail or to generate errors. 

(iv) ITA Software. That ITA Software shall perform substantially in accordance with the Documentation; provided,
that Kayak’s sole remedy for breach of this warranty will be to receive Maintenance Services in accordance with Exhibit B. 

(v) Non-Infringement: That the ITA Software is original to ITA and does not infringe, or otherwise violate or misappropriate any
copyright, patent, trade secret, or other proprietary right(s) held by any third party. Kayak’s sole remedy for a breach of the 

  
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foregoing representation shall be to require ITA, at ITA’s expense, to (I) procure for Kayak the right to continue using the ITA Software; (2) replace or modify the ITA Software so
that it becomes non-infringing but remains substantially equivalent in functionality and performance; or (3) in the event (1) and (2) are not commercially practicable within thirty (30) days, permit Kayak to terminate this
Agreement and the license granted hereunder and, within thirty (30) days of the date of such termination, refund to Kayak all unearned fees paid in advance by Kayak. 
 (vi) Documentation. That the Documentation and all modifications or amendments thereto which ITA is required to provide under this Agreement will accurately describe the ITA Software in all
material respects, without reference to any other materials or information; provided, that Kayak’s sole remedy for breach of this warranty will be to receive Maintenance Services in accordance with Exhibit B. 

(c) Disclaimer. EXCEPT FOR THE WARRANTIES SET FORTH IN THIS SECTION 7, EACH PARTY DISCLAIMS ALL OTHER WARRANTIES, EXPRESS AND
IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. 
 7. INDEMNIFICATION

 (a) By ITA. ITA shall, at its own expense, defend, indemnify and hold harmless Kayak and its directors, officers,
employees, successors and permitted assigns from and against any and all liabilities, damages, awards, losses, costs and expenses (including court costs and reasonable attorneys’ fees) arising out of any claim, demand, suit or cause of action
(hereinafter a “Claim”) brought by a third party relating to or resulting from (i) any act or omission of ITA or its employees, agents or contractors, (ii) any breach of the representation or warranty made in Section 6(b) by
ITA, or (iii) any claim by a third party that Kayak’s use of the ITA Software infringes a patent, copyright, trade secret or any other intellectual property right of such third party. 

(b) By Kayak. Kayak shall, at its own expense, defend, indemnify and hold harmless ITA and its directors, officers, employees,
successors and permitted assigns from and against any and all liabilities, damages, awards, losses, costs and expenses (including court costs and reasonable attorneys’ fees) arising out of any Claim brought by a third party relating to or
resulting from (i) any act or omission of Kayak or its employees, agents or contractors, or (ii) any breach of the representation or warranty made in Section 6(a) by Kayak. 

(c) Indemnification Procedures. 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 of any 

  
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claim 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. 
 8.
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 OR PROFITS, WHETHER IN CONTRACT, TORT. STRICT LIABILITY OR OTHERWISE, 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 (INCLUDING EXHIBIT B) IN THE AGGREGATE EXCEED THE []* PURSUANT TO THIS AGREEMENT (INCLUDING EXHIBIT B), WHETHER IN CONTRACT, TORT, STRICT LIABILITY OR OTHERWISE. THE LIMITATIONS
CONTAINED IN THIS SECTION SHALL NOT APPLY TO THE PARTIES’ INDEMNIFICATION OBLIGATIONS SET FORTH IN SECT ION 7, A BREACH BY EITHER PARTY OF SECTION 9 (CONFIDENTIALITY), A BREACH BY KAYAK OF SECTION 5 (FEES AND EXPENSES) OR THE WILLFUL OR
RECKLESS ACTS OF EITHER PARTY. 
 9. CONFIDENTIAL INFORMATION 

(a) Confidential Information. Each party has disclosed (prior to the commencement of this Agreement) and may disclose Confidential
Information to the other party which it intends the other party to maintain in confidence, and each party agrees to comply with the provisions of this Section 9 with respect to all such Confidential Information. As used herein, each party which
discloses such information is referred to as a “Disclosing Party” and each party which receives such information is referred to as a “Receiving Party.” “Confidential Information” means Disclosing Party’s
confidential and proprietary inventions, products, designs and ideas, including computer software, functionality, concepts, processes, internal structure, external elements, user interfaces, technology and documentation, as well as confidential and
proprietary information relating to Disclosing Party’s operations, plans, opportunities, finances, research, technology, developments, know-how, personnel, and any third party confidential information disclosed to Receiving Party. Without
limiting the foregoing definition, the ITA Software and the Documentation (except Documentation reasonably expected to be provided to Online Users regarding the use of the Licensed Software) are “Confidential Information” of ITA. The terms
and conditions of this Agreement are also “Confidential Information.” ITA understands and acknowledges that Kayak, in the course of its business may (i) manage, modify, maintain and update pre-existing data and information about
Online Users for use with the ITA 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 ITA Software, the Queries submitted to the ITA Software, and the responses thereto shall not constitute Kayak Data). Kayak shall retain all right,
title and interest in and to all Kayak 

  
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Data. In no event shall ITA be permitted access to any Kayak Data containing personally identifiable information regarding Online Users. Notwithstanding anything to the contrary herein, all such
Kayak Data, including without limitation, transactional or financial information, User names and addresses, passwords, registration information, and cookie information, shall be subject to Kayak’s privacy policy as set forth on the Site, and
Kayak shall not provide any such data to ITA. Notwithstanding the foregoing , “Confidential Information” shall not include information (a) already lawfully known to Receiving Party if the Receiving Party does not then have a duty to
maintain its confidentiality, (b) developed independently by the Receiving Party, (c) generally known to the public through no fault of the Receiving Party; (d) lawfully obtained from a third party not known to the Receiving Party to
be obligated to preserve its confidentiality; (e) required to be disclosed by law, regulation or order of a court competent jurisdiction or other governmental authority (except that prior to any such disclosure the Receiving Party shall give
the Disclosing Party notice thereof and afford the Disclosing Party the opportunity to oppose any such disclosure). 
 (b)
Non-Disclosure. Receiving Party acknowledges that Confidential Information is confidential, proprietary and/or trade secret information of the Disclosing Party. Receiving Party shall not use the Confidential Information for any purpose other
than in accordance with this Agreement, and shall not disclose Confidential Information to anyone other than its employees, and to contractors who legitimately need access to it and who have signed confidentiality agreements comparable in scope to
this Section 9. Receiving Party shall notify each of its employees and contractors who are given access to Confidential Information that they have an obligation not to disclose Confidential Information and shall take such steps as are
reasonably necessary to insure compliance with this obligation. Receiving Party shall safeguard Confidential Information with reasonable security means at least equivalent to measures that it uses to safeguard its own proprietary information.
Receiving Party shall store Confidential Information in a safe and secure location. Receiving Party may not remove copyright, trademark, trade secret, confidentiality, and patent notices from Confidential Information. 

(c) No Warranties. Except as specifically set forth in Section 6, all Confidential Information is provided “as is,”
without any express or implied warranty of any kind. 
 (d) Breach of Confidentiality Obligations. Receiving Party hereby
acknowledges that unauthorized disclosure or use of Confidential Information shall cause immediate and irreparable harm to Disclosing Party for which it would not have an adequate remedy at law. Accordingly, Disclosing Party shall have the right to
seek and obtain preliminary and final injunctive relief to enforce this Agreement in case of any actual or threatened breach, in addition to other rights and remedies that may be available to Disclosing Party. 

10. RELATIONSHIP OF THE PARTIES 
 The parties shall be treated for all purposes as independent contractors, and no provision of this Agreement shall he construed to constitute or create a partnership, joint venture, agency or formal
business organization of any kind. 

  
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 11. PUBLICITY

 (a) At no time shall either party release a press release that mentions the other party unless the other party has
consented in writing in advance to such press release; provided, however, that following the date Kayak begins using the ITA Software in production the parties will agree upon the terms of a jointly press release; and provided further that either
party may state that Kayak has entered into an arrangement with ITA. 
 (b) Kayak will provide ITA with acknowledgement and
placement on the Partner area (or its equivalent) on www.kayak.com in a manner, placement and presentation acceptable to ITA. 
 12. DISPUTE RESOLUTION 
 (a) In the event of any dispute arising from or in
connection with this Agreement, the parties will use good faith efforts to resolve the dispute in an amicable and businesslike manner through informal discussion in accordance with the following: 

(i) The parties will use diligent business efforts to resolve the dispute at the working level without resort to further dispute
resolution procedures. 
 (ii) Any dispute that is not resolved at the working level may be referred by either party to the
Account Managers appointed pursuant to Exhibit B. Any dispute not resolved by the Account Managers shall be referred to an elected officer of each party. Such officers shall meet in the same room to try to resolve the dispute. 

(iii) If the officers of the parties have not resolved the dispute within 15 days after the dispute is referred to them, then, upon the
request of either party, the dispute will be referred to the Chief Executives of the Parties. 
 (b) During each of these steps,
the applicable representatives of the Parties will discuss the dispute and attempt in good faith to resolve the dispute in a fair and equitable manner. The specific manner of the discussions will be determined by the applicable representatives. No
formal proceeding concerning the dispute may be commenced unless the Chief Executives have not resolved the dispute within 15 days after the dispute is referred to them and the Chief Executive of either Party concludes in good faith that resolution
of the dispute by informal discussion of the Parties is not likely. 
 (c) Any dispute relating to or arising from this
Agreement which is not resolved in accordance with the provisions of paragraphs (a) and (b) of this Section 12 shall be resolved by arbitration under the Commercial Rules of the American Arbitration Association. Three arbitrators shall be
selected. Kayak and ITA shall each select one arbitrator and the two chosen arbitrators shall select the third arbitrator, or failing agreement on the selection of the third arbitrator, the American Arbitration Association shall select the third
arbitrator. Unless otherwise agreed by Kayak and ITA, arbitration will take place in Boston, MA. Any court having jurisdiction over the matter may enter judgment on the award of the arbitrator(s). Service of a petition to confirm the arbitration
award may be made by First Class mail or by commercial express mail, to the attorney for the party or, if unrepresented, to the party at the last known business address. Notwithstanding the foregoing, no party shall be restricted from seeking
injunctive relief from a court empowered to grant such relief. 

  
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 13. MISCELLANEOUS

 (a) Severability. If any provision of this Agreement is declared by a court of competent jurisdiction to be invalid
or unenforceable, such determination shall not affect the validity or enforceability of any other provision hereof. 
 (b)
Entire Agreement. This Agreement represents the entire agreement of the parties with respect to the subject matter hereof and cancels and supersedes any previous understanding, commitments, or agreement, oral or written, between Kayak and
ITA, other than confidential disclosure agreements. 
 (c) Waiver. No failure by either party to insist upon the strict
performance of any covenant, term or condition of this Agreement, or to exercise any right or remedy, shall constitute a waiver of such right or remedy on any subsequent occasion. 

(d) Governing Law. The validity, construction, scope and performance of this Agreement shall be governed by the laws of the
Commonwealth of Massachusetts, exclusive of its choice of law provisions. 
 (e) Amendment. This Agreement may not be
amended except in writing executed by duly authorized representatives of both ITA and Kayak. 
 (I) Notices. Any notices
hereunder shall be given by certified mail (return receipt requested) or overnight mail to the panics at the addresses set forth below, or to such other address as either party may have notified the other. 

 

			
	Kayak Software Corp.	  	ITA Software, Inc.
	27 Ann Street, Suite 300	  	141 Portland Street, 7th Floor
	Norwalk, CT 06S54	  	Cambridge, MA 02139
	Facsimile: (203) S99-3 125	  	Facsimile: (617) 621-3913
	Attention:	  	Attention: VP - General Counsel

 Notices given by
certified mail shall be deemed given three business days after the day mailed; notices given by overnight mail shall be deemed given one business day after the day mailed. 
 (g) Assignment. This Agreement may not be assigned by either party without the other party’s prior written consent; provided that either party shall be permitted to assign its rights and
obligations hereunder, without the other party’s consent, to a third party in the event of a Change in Control or any sale, assignment; transfer or other conveyance to such third party of all or substantially all of the business or assets of
the assigning party, or (in the case of Kayak) any sale, assignment, transfer or other conveyance of the Site to such third party. Subject to the foregoing, this Agreement shall be binding on the parties and their respective successors and permitted
assigns, and such permitted assigns shall expressly agree to be bound by all the terms and conditions herein. No partial assignment of the rights or obligations granted hereunder shall be permitted. 

  
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 (h) Headings.
The headings of the Sections used in this Agreement and the Exhibits attached hereto are for convenience of reference only and shall not be considered in construing this Agreement. 

(i) Counterparts. This Agreement may be signed in one or more counterpart copies, all of which together shall constitute one
Agreement and each of which shall constitute an original. 
 IN WITNESS WHEREOF, the parties have hereunto set their hands and seals as of the
date first above written. 
  

			
	KAYAK SOFTWARE CORP.
		
	By:	 	 /s/ Paul English

		
	Name:	 	Paul English
		
	Title:	 	Chief Technical Officer and Co Founder
	
	ITA SOFTWARE, INC
		
	By:	 	 /s/ Jeremy Wertheimer

		 	Jeremy Wertheimer, President

  
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 EXHIBIT A

 Form of Statement of Work 
 Statement of Work Number                      

This document shall serve as a Statement of Work to that certain Services Agreement dated as of March 3. 2004 by and between Kayak
Software Corp. (“Customer”) and ITA Software, Inc (“ITA”) (the “Agreement”). 
 The undersigned
agree that this Statement of Work and the services to be provided hereunder are subject to the terms and conditions of the Agreement, which terms and conditions are incorporated herein by reference. 

 

	I.	NARRATIVE DESCRIPTION OF PRODUCTS AND SERVICES 

  

	 	A.	Description and Project Scope 

  

	 	B.	ITA Responsibilities 

  

	 	C.	Deliverables 

  

	 	D.	Reporting 

  

	 	E.	Testing 

  

	 	F.	Kayak Responsibilities 

  

	 	G.	Estimated Timeline 

  
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	II.	PRODUCT PRICING AND DELIVERABLES 

  

	 	A.	Work Product to be developed by ITA 

  

	III.	COMPLETION AND ACCEPTANCE CRITERIA 

  

	IV.	FEE SCHEDULE 

  

	V.	EXPENSES 

  

									
	KAYAK SOFTWARE CORP.	 		 	ITA SOFTWARE, INC.
					
	By:	 	  
	 		 	By:	 	  

					
	Name:	 	  
	 		 	Name:	 	  

					
	Title:	 	  
	 		 	Title:	 	  

  
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 EXHIBIT B

 MAINTENANCE, DATA AND OPERATIONS SERVICE LEVELS 
 1. Introduction 
 This Maintenance, Data and Operations Service Level Agreement covers
standards for the provision of maintenance, data and data management and support, and hosting and operations by ITA to Kayak. 
 ITA has granted
to Kayak the right to access and submit Queries to the ITA Software in order to provide travel planning and related services to Online Users, ITA will operate the ITA Software at its locations in the Boston, Massachusetts area (collectively, the
“Data Center”, which shall include any other location(s) to which ITA may move the Data Center in the future). To support Kayak, ITA will: (i) maintain and support the ITA Software, pursuant to Section 2 of this Exhibit B
(“Maintenance Services”), (ii) provide data and data support relating to the ITA Software, pursuant to Section 3 of this Exhibit B (“Data Services”) and (iii) host and operate the ITA Software, pursuant to
Section 4 of this Exhibit B (“Operations Services”). 
 2. Maintenance Services 

2.1 Scope of Services 
 (a) The following
are the Maintenance Services that will be provided by ITA: 
 ITA shall: 

 

	 	(i)	develop and provide corrections, changes, or workarounds (“Corrections”) within a reasonable period of time for any material defects, errors, or malfunctions
in the ITA Software, discovered by Kayak or ITA; 

  

	 	(ii)	make available to Kayak and its Online Users all improvements, modifications and enhancements (other than improvements, modifications or enhancements which are
developed by ITA specifically for its other customers which are specific to the systems or software of such other customers) to the ITA Software which ITA shall make or acquire from time to time and which ITA makes available to its customers
generally (“Improvements”); provided, however, that ITA may, from time to time, offer Improvements which contain significant new or improved functionalities, in which event ITA shall make such Improvements available to Kayak and its Online
Users only upon the payment of additional fees, or upon such other terms, as ITA requires of its other commercial customers generally therefor. 

 (b) In the event that changes in industry-standard practices and/or data formats (such as ATPCO file formats, ATPCO processing, SSIM schedule formats and government or IATA mandates regarding taxes and
passenger facility charges (PFCs)) prevent the ITA Software from functioning as specified in the Services Agreement, ITA shall insure operation of the ITA 

  
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Software in a manner equal to the functionality described in the Services Agreement. ITA will not impose any additional charge upon Kayak so long as the ITA Software does not contain significant
new or improved functionalities (or, if it does contain significant new or improved functionalities, such functionalities will he provided as set forth in Section 2.1 (a)(ii). Any changes to the ITA Software described in this paragraph
(b) will be considered “Improvements” for the purposes of this Section 2, and ITA shall effect such Improvements to the ITA Software within a reasonable time prior to the effective date of such industry change so that such
Improvements may be implemented by the effective date of such change. 
 (c) When a new release is available. ITA will provide release notes
identifying changes comprised in the release, and will thereafter make available to Kayak a test server with such new release for testing by Kayak, and will notify Kayak thereof. ITA will provide such release notes reasonably in advance of the date
the new release is loaded onto the test server. Unless Kayak informs ITA, within 30 days of such notice from ITA as a result of material problems with the new release, of its desire not to implement such new release. ITA will implement such new
release in the production version of the ITA Software operated by ITA on behalf of Kayak. In the event Kayak informs ITA that it believes there is a material problem with the new release, ITA will not implement the new release in production but will
work together with Kayak in good faith to identify and resolve the problem so that the new release may be implemented in production as soon as practicable. ITA will attempt to ensure that new versions of the ITA Software will not require Kayak to
rewrite the Queries it sends to the ITA Software, except as required to utilize new features or functionality that may be contained in such new version. In the event Kayak’s Queries fail when used with a new version of the Software, ITA will
assist Kayak in rewriting such Queries so that they will be compatible with the new version; provided, however, that in order to facilitate such assistance by ITA, Kayak will provide ITA with current copies of all the Queries it uses with the ITA
Software. 
 (d) ITA will provide Kayak with any revisions to the existing Documentation developed or necessary to reflect all Corrections or
Improvements. 
 (e) All Corrections and Improvements shall be considered part of the “ITA Software” and subject to all the terms and
conditions of the Services Agreement. 
 2.2 Software Maintenance 
 ITA shall maintain a technical support entry point in Massachusetts, identified by a dedicated phone number (in the case of emergency problems, as defined in Section 5.1 (a)) and e-mail address (in
the case of non-emergency problems), which will be staffed by knowledgeable employees capable of providing technical assistance regarding the ITA Software, its functionality, databases, operations, utilities and supporting documentation. Normally,
response to non-emergency problems will be by telephone or e-mail by the ITA Account Manager (pursuant to Section 7.2) during regular working hours (9:00 a.m. to 6:00 p.m. Eastern time Monday through Friday). On-call coverage will be in effect
twenty four (24) hours a day, seven (7) days a week in response to emergency problems. These technical support entry points will also coordinate problem resolution and keep Kayak apprised of efforts to remedy any problem situation until
complete restoration of the service. First line of support will be Kayak’s Help Desk, who will contact and escalate problem to ITA when necessary. ITA shall provide Maintenance Services directly to Kayak but not to Kayak Customers or Online
Users. 

  
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 3. Data Services 

3.1 Scope of Services 
 (a) ITA currently
maintains the Data Center in the Safecore facility in Medford, Massachusetts and the WorldCom facility in Billerica, Massachusetts, and may establish alternate or additional data centers. ITA manages data feeds for schedule and faring data and
provides such data to the ITA Software. ITA currently receives fare data from Airline Tariff Publishing Company (“ATPCO”), schedule data from OAG Worldwide, Inc. (“OAG”), and certain industry data from the International Air
Transport Association (“IATA”). In addition, ITA receives seat availability data from the Galileo GDS (“Galileo”) and directly from airlines. 
 (b) The operation of the Data Center (including all software running in such facilities) is the sole responsibility of ITA. 
 (c) As part of the data management services provided hereunder, and subject to the provisions of the Services Agreement, ITA will (i) receive and manage downloads of certain fare, schedule,
availability and industry data (collectively, “Licensed Data”) from ATPCO, OAG, Galileo, individual airlines, and IATA, respectively (or in each case from such other commercially reasonable industry accepted sources as ITA may determine in
its sole discretion, referred to herein as “Data Providers”), and (ii) process such data such that it is in a form suitable for use with the ITA Software. ATPCO international fare data is presently received five times per day; OAG
schedule data is presently received two to three times per week; IATA data is received regularly; and availability data is received on a continuous basis. 
 d) It is a condition of ITA’s providing data services hereunder that Licensed Data he used solely in connection with the operation of the ITA Software, Therefore, Kayak agrees that it will not, and
it will require that Online Users do not, transfer or distribute Licensed Data separately from the responses generated by the ITA Software and that such data only be used for activities that are intended to lead to the bona fide purchase of Queries
or to otherwise enhance the value of the Site to Participating Airlines (not, for example, for purposes such competitive price analysis). 

3.2 Data Providers 
 ITA presently has in
place and will use reasonable commercial efforts to maintain legal agreements, sufficient to cover ITA’s legal obligations to perform hereunder, with Data Providers for the provision of schedule, fare, industry and availability data for the
operation of the ITA Software. However, Kayak acknowledges and agrees that such Data Providers are third parties which are not in ITA’s control and which are subject to delay or failure. While ITA agrees, as part of its obligations under this
Exhibit B, to receive, load and manage such data, neither party warrants the accuracy of such data. In addition, ITA disclaims any and all liability resulting from or related to Data Providers’ failure to provide data to ITA in a timely
fashion. 

  
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 3.3 Availability Data

 (a) ITA supplies availability data to the Licensed Software, which data is received by ITA from carriers and other sources. The quality
and type of such data can vary significantly from carrier to carrier and from time to time. Kayak acknowledges that from time to time carriers change the quality and/or type of availability data they provide, and that such changes may have a
material adverse affect on the “bookability” of certain solutions generated by the Licensed Software. 
 ITA has resources dedicated
to maintenance of ITA’s availability infrastructure, which infrastructure is common to all ITA customers. ITA’s availability team is continually engaged in seeking to optimize the quality of availability data; however, it may be the case
for particular carriers or at particular carries that the quality of availability data provided by the carrier may cause booking failures in a material percentage of cases. While ITA will address availability issues as it determines in its sole
discretion, the Kayak specifically acknowledges that the quality of availability data, or the percentage of booking failures that may be caused by availability data issues, are outside the scope of this Agreement and Kayak will have no remedy
against ITA for ITA’s failure to address availability problems in a manner or with a priority that Kayak may request. Moreover, Kayak specifically agrees that if Kayak reports any problems with availability, or bookability failures that result
from problems with availability, ITA will inform Kayak if it plans to work on these problems of its own accord or on behalf of other customers. If ITA informs Kayak that it does not intend to work on a problem, then Kayak may request that ITA work
on such problem on behalf of Kayak, in which case, if ITA elects to perform such work, its work thereon will be billed to Kayak at ITA’s standard rates (currently $225 per hour) pursuant to an SOW. 

(b) Kayak agrees to make booking data (i.e., information about booking failures) available to ITA, preferably in real time, in such form and through such
means as the parties may together determine, and that ITA may use such data for the sole purpose of improving the quality of availability data and bookability. 
 4. Operations Services 
 4.1 Data Center 

ITA will operate and maintain the Data Center and provide Operations Services on a “24/7/365” basis. Such Operations Services will include,
without limitation, the acquisition, installation, maintenance, upgrading, monitoring and all aspects of the operation of all computer hardware and equipment, and all services related thereto necessary in connection with the operation of the ITA
Software are and the provision by ITA of the Data Services provided hereunder. 
 4.2 Hardware 

Simultaneously with the execution of this Agreement, Kayak and ITA will determine the initial number of dedicated fare searching and availability servers
ITA will operate in order to provide services to Kayak. During the term of this Agreement, ITA will advise Kayak as to changes in the ITA Software or available hardware which would affect Kayak’s server requirements. From time to time, Kayak
may determine (with such assistance from ITA as Kayak may reasonably 

  
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request) to acquire additional servers, and ITA will acquire such number of additional servers as Kayak may direct. ITA will determine, in its reasonable discretion in consultation with Kayak,
the other hardware and equipment (including ancillary equipment such as availability servers and query distributors, etc.) appropriate for ITA to provide services to Kayak using the ITA Software at the Data Center (the “Hardware”);
provided that Kayak will have at least four production servers and at least one test server. (Prior to the Service Fee Commencement Date, Kayak will have at least two test servers.) Servers used to provide services to Kayak shall be contained in a
separate server farm. ITA will replace Hardware when and as warranted in its reasonable judgment; however, servers will be replaced no less frequently than every 24 months. The cost of replacement of servers is included in the per-server charge
described in Section 6.3.1. 
 4.3 Operation of Software 
 ITA will be responsible for all aspects of the operation of the ITA Software and Licensed Data in order to provide services to Kayak, including the installation of Corrections and Improvements. ITA will
also monitor the ITA Software at the Data Center. ITA will not be responsible for Kayak’s (or any Online User’s) operation or use of the Site or for the operation of any software or hardware which is not located at the Data Center.

 ITA will provide by email to ita@kayak.com. on a daily basis, a histogram of server utilization, and a graph that shows the number of Queries
per minute throughout the day. In the event ITA develops other reports to be provided regularly to its customers, it will provide such reports to Kayak as well. ITA will also make available to Kayak, upon Kayak’s request, query logs showing
Kayak’s Queries to the ITA Software. 
 4.4 Communications 
 (a) ITA will receive Queries from Kayak and transmit responses from the ITA Software, from the Data Center via communications channels which may include either a virtual private network or dedicated
point-to-point circuits. 
 (b) All hardware, software and services associated with communications between the Data Center and any facility a
which Kayak (or its Customers) operates web sites or other distribution facilities (the “Kayak Facilities”), including maintenance thereof, will be provided by Kayak (or such Customer) at its own expense. 

(c) Kayak expressly acknowledges that the flow of data to or from the Data (Center will depend in large part on the performance of hardware, software and
services provided or controlled by third party communications providers. ITA disclaims any and all liability resulting from or related to Kayak’s (or its Customers’) inability to communicate with the Data Center. to the extent such
inability is the result of the failure of hardware, software or services provided by such third party. 
 4.5 Disaster Recovery

 ITA will comply with the provisions of the Disaster Recovery Plan (DRP) attached hereto as Appendix A, and shall provide Kayak with
notice of any material change to such DRP. 

  
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 5. Performance Service Levels

  

	5.1	Problem Classification 

 Problems will be
classified in accordance with the following definitions: 
 (a) Emergency Problems. The following will be considered “emergency
problems”: (i) the ITA Software is “unavailable” (as defined in Section 5.3(b)) to answer Queries; (ii) the ITA Software is not being supplied with any fare data, or new fare data is not loaded within four hours after
ITA’s receipt thereof; (iii) the ITA Software is not being supplied with any schedule data, or new schedule data is not loaded within twelve hours after ITA’s receipt thereof; (iv) the ITA Software is not being supplied with any
availability data, or an availability feed from a Participating Carrier to the Data Center is interrupted for a period exceeding four hours; or (v) any of the foregoing types of data is not being properly integrated into the ITA Software, so as
to cause the ITA Software to return answers that are not “correct” (as defined in Section 5.3(b)). 
 (b) Non-Emergency
Problems. All problems that are not emergency problems, as defined in paragraph (a), will be considered “non-emergency problems”. Without limiting the foregoing, the following will be considered “non-emergency problems”:
(i) pricing errors in the ITA Software; (ii) any defects, errors or malfunctions in the ITA Software that do not cause the ITA Software to be “unavailable” (as defined in Section 5.3(b)) to answer Queries; (iii) working
with Data Providers to correct erroneous data (including instances where the ITA Software processes the data correctly, but the data is not what the carrier intended to file); and (iv) the Documentation fails in a material respect accurately to
describe the functionality of the ITA Software. Non-emergency problems may be either software problems, operations problems or data problems. 

Notwithstanding the foregoing definitions, problems caused by or arising from the following will not be considered “problems” (either emergency
or non-emergency) for the purposes hereof: (i) failure of a Data Provider (as defined in Section 3.1(c)) to provide data in a timely fashion; or (ii) failure of telecommunications hardware or equipment which is not within ITA’s
control 
  

	5.2	Response Times and Resolution Targets 

ITA shall respond to and use its reasonable commercial efforts to resolve problems in accordance with the following guidelines, based upon the definitions
set forth in Section 5. 1: 
 (a) Emergency Problems: Emergency problems may be reported by hotline at any time (24 hours/7 days a
week). Relevant resources shall be applied 24/7 until the problem is resolved. The target resolution time for emergency problems will be 90 minutes after the problem is reported. ITA agrees to respond to Kayak by phone within 1/2 hour of
notification of an emergency problem to the Kayak designated contact point and provide updates to on a no less than hourly basis until the emergency problem is resolved, as determined in ITA’s reasonable discretion. Response to emergency
problems will be on a “24/7/365” basis. 
 (b) Non-emergency problems: Non-emergency problems may be reported by e-mail at any
time. ITA will apply appropriate resources (as determined by ITA in its reasonable discretion) during regular working hours until the problem is resolved. The target resolution time for non- emergency

  
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problems will be not later than the next scheduled quarterly upgrade in the case of software problems; provided that rolIci1s which ITA (in its reasonable discretion, after consultation with
Kayak) determines are insignificant may not be addressed by ITA at all. In the case of non-emergency problems which are either operations problems or data problems. ITA will apply relevant resources and make commercially reasonable efforts to
resolve such problems as soon as practicable, and will inform Kayak of its target resolution time (as to which ITA may consult with Kayak at Kayak’s request). 
  

	5.3	Uptime 

 (a) Uptime. ITA shall
maintain a minimum uptime of []* (measured on a monthly basis) for the ITA Software. Failure to meet this uptime shall result in a credit to Kayak (representing a pro rata portion of the monthly Operations Services Fee provided in Section 6.3
below and the Data Services Fee provided in Section 6.2.1 below, payable by Kayak in the month in which the failure occurred) to be applied against future monthly Operations Services Fees and Data Services Fee as provided below: 

 

					
	Uptime	  	 Contractual
Credit
 (as a percentage of
 monthly Operations
 Services Fee and

Base Service Fee to
 be
abated)
	  	
	[	  	 	  	
	 	  	 	  	
	 	  	 	  	
	 	  	 	  	
	 	  	 	  	
	 	  	 	  	
	 	  	 	  	
	 	  	 	  	
	 	  	]*	  	

 (b) As used in paragraph (a) above, “uptime” means the number of minutes that the ITA Software is
not “unavailable”. “Unavailability will be determined as follows: ITA monitors the operation of the ITA Software by sending, not less frequently than once per minute, test Queries from outside the ITA firewall, to the computers
running the ITA Software. If the query generates a correct answer (defined below), the ITA Software is “available”: if it fails to generate correct answers to []* then the ITA Software is “unavailable”. The parties intent with
respect to uptime is that “unavailability” does not represent a software or a data problem, but rather that the computers running the ITA Software are not operating, or are operating so poorly that no answers are generated or the answers
generated are essentially unintelligible. “Correct answers” will be defined as those answers that match the query that was originally requested. For the purposes hereof, an answer will be deemed to match a query if it comprises the same
origin, destination and dates as those in 

  
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the query; provided, that if the ITA Software fails to return an answer because no itinerary with the requested origin, destination and/or dates was possible, such answer will not be considered
incorrect. Answers that match the query originally requested, as described in the preceding sentence, but contain incorrect prices, will not constitute “unavailability” for the purposes of this paragraph. 

(c) If the ITA Software is unavailable, ITA will provide credits pursuant to paragraph (a) unless such failure is due to any of the following:
(i) Force Majeure (as defined in Section 7.4); (ii) acts or omissions of Kayak, or any use or user of the ITA Software authorized by Kayak; or (iii) Kayak’s applications, equipment, or facilities. 

(d) Without limiting Kayak’s rights resulting from any other breach by ITA of the terms hereof or of the Services Agreement, Kayak’s receipt of
the credits set forth in paragraph (a) above shall be Kayak’s sole and exclusive remedy for downtime. 
  

	5.4	Standard Operating Procedures 

 The
procedures for reporting, diagnosing, tracking and responding to problems are set forth in ITA’s standard operating procedures for Kayak (“SOP”), which is attached to this Agreement as Appendix B, as it may be amended by the
parties from time to time; provided, that ITA will give Kayak reasonable prior notice of any anticipated major changes to the SOP. 
 6. Fees
and Expenses 
  

	6.1	Maintenance Services 

 There is no charge
for the Maintenance Services described in Section 2, except as specifically provided therein. 

6.2.1      Data Services 
 The charge for the Data Services described in Section 3.1(c) is []*, beginning on the date (as determined in consultation with Kayak) that the ITA Software is installed in an operational environment
which is equivalent to that in which the ITA Software will be used commercially, and is available for testing by Kayak (the “Initial Software Installation Date”). 

 

	6.2.3      	Increase in Other Data Costs 

 The costs
to ITA of obtaining fare, schedule and other industry data provided hereunder are included in the Service Fee payable by Kayak. However, in the event there is a material (i.e., in excess of 15%) increase in the cost to ITA of the third party data
feeds which are provided hereunder from those presently in effect. ITA reserves the right to impose a separate fee relating to such actual increase in data cost upon 90 days’ prior written notice to Kayak. 

  
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6.2.4      OAG Royalty 
 ITA’s agreement with OAG provides that ITA may provide OAG data to an ITA customer without additional charges “if (i) the customer to which ITA Software is providing the OAG Data is also a
subscriber to the OAG data or (ii) such customer’s use of the ITA Software utilizing the OAG Data is hosted by ITA Software.” In the event the agreement between ITA and OAG then in effect required the payment of a royalty payment by
virtue of the preceding provision, Kayak will reimburse ITA for the actual amount of any such royalty payable to OAG; provided that, in the event of ITA’s notifying Kayak of such a royalty obligation, the parties will use reasonable commercial
efforts to refute the obligation to pay such a royalty or, if such efforts are unsuccessful, Kayak may use reasonable commercial efforts to obtain the right to provide such data to ITA directly without additional cost to Kayak. 

 

	6.3	Operations Services 

6.3.1      Data Center 
 ITA will charge Kayak a monthly charge, which will be based upon the number of dual processor fare searching/pricing and availability servers (including test servers) included in the Hardware from time to
time, as determined pursuant to Section 4.2. Such charge will relate to the cost of operating the ITA Software at the Data Center in order to provide services to Kayak, and will be inclusive of all recurring acquisition, replacement, upgrading,
operation and maintenance costs of the Hardware, rack space, bandwidth, co-location, facility services, performance monitoring, networking charges, telecommunications and other costs associated with operation of the Data Center. The amount of this
fee will be $1,450 per month per dual processor server, payable in equal monthly installments in advance beginning on the Initial Software Installation Date (as defined in Section 6.2.1) and prorated for partial months. 

6.3.2 Communications Costs 
 All
hardware, software and services associated with communications between the Data Center and Kayak Facility, including maintenance thereof, will be the responsibility of Kayak. In the event ITA contracts for such hardware, software and/or services,
Kayak will reimburse ITA for the cost thereof, provided that prior to committing to any such expense ITA will notify Kayak thereof and will not contract for any such expense to which Kayak reasonably objects. 

6.3.3 Other Costs 
 In the event that
Kayak requests that ITA’s personnel travel outside of the greater Boston area in connection with the provision of Maintenance Services, Data Services or Operations Services pursuant to this Exhibit B, Kayak will pay ITA, with respect to such
travel, all reasonable out-of- pocket expenses thereof; provided that (1) ITA obtains Kayak’s prior written approval before incurring such reimbursable expenses; or (2) such expenses are incurred in accordance with Kayak’s
then-current policy regarding such reimbursable expenses (a copy of which Kayak agrees to provide ITA upon request). ITA agrees to provide Kayak with access to such original receipts, ledgers, and other records as may he reasonably appropriate for
Kayak or its accountants to verify the amount and nature of any such expenses. 

  
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	6.4	CPI Increase 

 Upon thirty days’
notice effective at any time beginning January 1, 2006, the hourly rate for software developers set forth in Section 6(f) of the Services Agreement, the fee for data services set forth in Section 6.2.1, and/or the per-server fee for
operations services set forth in Section 6.3.1 may be increased at ITA’s option by an amount equal to the CPI Increase. The “CPI Increase” means the change (as of the date the most recently available) in the Bureau of Labor
Statistics Consumer Price Index – All Items (as reported in the Wall Street Journal) from a base of January, 2005 through January of the year for which such change applies. 

 

	6.5	Payment Terms 

 All fees and expenses
described in this Section 6 will be invoiced by ITA, and each such invoice will be payable thirty (30) days after receipt by Kayak. Any amounts which are not paid when due hereunder will accrue interest at the rate of 1.5% per month
from the date due until the date actually paid. 
  

	7.	General Provisions 

  

	7.1	Warranties 

 ITA shall perform the
Maintenance Services, Data Services, Operations Services and all other services specified herein in a good, workmanlike and professional manner using qualified personnel fully familiar with the ITA Software. 

 

	7.2	Designated Account Managers 

 Kayak and
ITA shall each appoint an account manager (“Account Managers”) who shall be responsible for all administrative matters pertaining to this Agreement. The Account Managers will serve as primary point of contact for the other party for any
matter regarding this Agreement. 
 The Account Managers will initially be the following individuals: 

For ITA: 
 Name: 

Title: 
 E-Mail: 

Phone: (617) 714 -2100 
 Fax:
(617) 621-3913 
 For Kayak: 

Name: Paul Schwenk 
 Title: VP, Engineering

 E-Mail: pschwenk@kayak.com 
 Phone:
(978) 369-8170 
 Fax: (978) 369-8174 

  
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 Either party may replace the appointed
Account Manager upon delivery, prior to such change, to the other party of written notice of such change. 
  

	7.3	Exclusivity of Remedies 

 The provisions
of the Services Agreement and this Exhibit B constitute the exclusive provisions applicable to ITA’s maintenance and support of the ITA Software and the provision and support of data and operations therefor. Except as set forth in the Services
Agreement or herein. ITA disclaims any and all warranties, express or implied, including but not limited to warranties of merchantability or fitness for a particular purpose, except as specifically set forth herein. 

 

	7.4	Testing Period 

 Kayak acknowledges that
it has been informed by ITA that for so long as Kayak communicates with the ITA Data Center over the Internet, the Kayak server farm will he considered a “test farm” and not a “production farm.” Accordingly, while ITA will
exercise reasonable commercial efforts to comply with the various provisions of this Exhibit B. Kayak agrees that, until Kayak has installed and begun using dedicated private lines to communicate with the Data Center, (i) under no circumstances
will ITA le obligated to Kayak for any penalties, liabilities or credits (including but not limited to credits for downtime) resulting from any failure of ITA to comply with this Exhibit 11 and (ii) no problems will be classified as
“emergency problems”. 

  
 * 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.

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