Document:

Option Amendment Agreement

 Exhibit 10.34 
 KAYAK SOFTWARE CORPORATION 
 2005 EQUITY INCENTIVE PLAN 

Option Amendment Agreement 
 This Option Amendment Agreement (this “Option Amendment Agreement”) is made as of July 7, 2009, and amends that certain stock option agreement identified by its date and the shares
subject thereto in the table below (the “Option Agreement”), by and between Kayak Software Corporation, a Delaware corporation (the “Company”), and the Employee identified in the table below. 

The Employee is the holder of an option (the “Option”) under the Company’s Third Amended and Restated 2005 Equity
Incentive Plan (including any predecessor version thereof and as the same may in the future be amended from time to time, the “Plan”) to purchase such number of shares of the Company’s common stock, $0.001 par value per share,
set forth in the table below: 
  

			
	Name of Employee (the “Employee”):	  	Karen Klein
	Date of Option Agreement:	  	November 1, 2007
	Number of shares subject to the Option Agreement (the “Shares”):	  	200,000
	Existing Option Exercise Price Per Share (the “Pre-Amendment Option Exercise Price”):	  	$12.50
	The Initial Vesting Date specified in the Option (the “Former Vest Date”):	  	November 1, 2007

 B. The Company is
willing to reduce the Pre-Amendment Option Exercise Price to $7.50 per share in exchange for a reset of the vesting schedule applicable to the Shares as set forth below, and the Employee is willing to accept such reset of the vesting schedule in
exchange of such reduction of the Pre-Amendment Option Exercise Price. 
 NOW THEREFORE, in consideration of the premises and
the mutual promises herein contained, the parties hereto hereby agree as follows: 
 1. Each party hereto agrees that, effective
as of July 7, 2009 (the “Effective Date”), the Option Agreement be and hereby is amended to decrease the Pre-Amendment Option Exercise Price to an exercise price of $7.50 per Share. 

 2. Each party hereto agrees that, effective as of the Effective Date, the Option Agreement
be and hereby is amended such that, notwithstanding anything to the contrary therein, (x) the Option shall not be exercisable as to any of the Shares (i.e., the Option shall not be vested as to any of the Shares) as of the Effective Date, and
(y) thereafter the Shares shall become exercisable (i) if the Option was exercisable (i.e., vested) as to at least twenty-five percent (25%) of the Shares immediately prior to the Effective Date, then in forty-eight (48) equal
monthly installments with the first such installment occurring on the one-month anniversary of the Effective Date and (y) if the Option was not exercisable (i.e., vested) as to at least twenty-five percent (25%) of the Shares immediately
prior to the Effective Date, then the Option shall be exercisable as to the Applicable Percentage of the Shares on the first monthly anniversary of the Effective Date which occurs after the Former Vest Date, and shall become exercisable as to the
remainder of the Shares in equal monthly installments thereafter through the four-year anniversary of the Effective Date; provided that during any period that the Option remains outstanding after the Employee’s employment or other formal
business association with the Company and its Affiliates ends, the Employee may exercise the Option only to the extent it was exercisable immediately prior to the end of the Employee’s employment or such other association. “Applicable
Percentage” means, as of the vesting date specified above, an amount determined by dividing the number of full months which have passed since the Effective Date by forty-eight (48). 

3. The Employee represents to the Company that: 
 (i) the Employee understands and acknowledges that the aggregate number of Shares underlying the Option has not been increased by this Option Amendment Agreement; 

(ii) the Employee has not exercised the Option, and will not exercise or seek to exercise the Option, in each case at any time prior to
the Effective Date, whether in whole or in part; 
 (iii) the Employee understands that by virtue of the amendment effected
hereby, all or a part of the Option cease to qualify as an “incentive stock option” within the meaning of Section 422 of the Internal Revenue Code; 
 (iv) the Employee has had the opportunity to consult with such tax and legal advisors and consultants, if any, as the Employee deemed advisable in connection with this Option Amendment Agreement;

 (v) the Employee acknowledges and agrees that neither the Plan nor the Option Agreement as amended by this Option Amendment
Agreement imposes any obligation on the Company to continue the Employee in employment or in any other business association; and 
 (vi) the Employee understands that in the event that the Employee’s employment or other formal business association with the Company is terminated, by the Company or by the Employee, with or without
cause, that the aggregate number of Shares which the Employee may be eligible to exercise under the Option as amended hereby may be less than the number of Shares which the Employee may have been eligible to exercise had the Employee elected not to
amend the Option pursuant hereto. 
 4. The terms of the foregoing Sections 1 and 2 supersede any and all provisions of the
Option Agreement. Except to the extent amended hereby, all of the definitions, terms, provisions and conditions set forth in the Option Agreement (including, but not limited to, the incorporated terms and conditions thereof) are hereby ratified and
confirmed and shall remain in full force and effect. The Option Agreement and this Option Amendment Agreement shall be read and construed together as a single instrument. Capitalized terms used herein without definition shall have the respective
meanings for such terms set forth in the Option Agreement. 

  
 2 

 5. This Option Amendment Agreement may be signed in any number of counterparts, each of
which shall be deemed to be an original and all of which together shall constitute one and the same instrument. This Option Amendment Agreement shall be construed and enforced in accordance with the laws of the Commonwealth of Massachusetts, without
regard to the conflict of laws principles thereof, and shall be binding upon and inure to the benefit of any successor or assign of the Company and any executor, administrator, trustee, guardian, or other legal representative of the Employee.

 IN WITNESS WHEREOF, this Option Amendment Agreement has been executed under seal by the parties hereto as of the date and
year first above written. 
  

							
		 		  	 KAYAK SOFTWARE CORPORATION

				
	 /s/ Karen Klein
	 		  		 	
	Signature of Employee	 		  	By:	 	         /s/ D. Steven Hafner

				
	  
	 		  		 	
	  
	 		  		 	
	  
	 		  		 	
	Street Address	 		  		 	

  
 3Stock Option Agreement

 Exhibit 10.35 
 KAYAK SOFTWARE CORPORATION 
 Amended and Restated 2005 EQUITY INCENTIVE
PLAN 
 Non-Qualified Stock Option Agreement 
 THIS AGREEMENT, dated as of October 1, 2010, is by and between Kayak Software Corporation, a corporation organized under the laws of the State of Delaware (the
“Company”), and the individual identified below, residing at the address there set out (the “Optionee”). 
 1. Grant of Option. Pursuant and subject to the Company’s Amended and Restated 2005 Equity Incentive Plan (as the same may be amended from time to time, the “Plan”),
the Company hereby grants to the Optionee an option (the “Option”) to purchase from the Company all or any part of a total of 60,000 shares (the “Optioned Shares”) of the Company’s common stock,
par value $0.001 per share (the “Common Stock”), at a price of $14.82 per share. The Grant Date of this Option is as of the date hereof. 
 2. Character of Option. This Option is not to be treated as an “incentive stock option” within the meaning of Section 422 of the Internal Revenue Code of 1986, as amended.

 3. Duration of Option. Subject to the following sentence, this Option shall expire at 5:00 p.m. on September 30,
2020. However, if the Optionee’s employment or other association with the Company and its Affiliates ends before such date, this Option shall expire at 5:00 p.m. on the earlier to occur of (a) September 30, 2020 and (b) the date
that is ninety (90) days after the date of such termination. 
 4. Exercise of Option. Until this Option expires,
the Optionee may exercise it as to the number of Optioned Shares identified in the table below, in full or in part, at any time on or after the applicable exercise date or dates identified in the table. However, during any period that this Option
remains outstanding after the Optionee’s employment or other association with the Company and its Affiliates ends, the Optionee may exercise it only to the extent it was exercisable immediately prior to the end of the Optionee’s employment
or other association. The procedure for exercising this Option is described in Section 7.1(f) of the Plan, and in accordance with the Plan, no fraction of a share shall be purchasable or deliverable upon exercise. 

 

			
	Date on which vesting begins:	 	September 17, 2010
		
	 Number of Optioned Shares
 in Each Installment
	 	 Initial Exercise Date
 for Shares in Installment

		
	 1,250 Optioned Shares
	 	1,250 Optioned Shares will become exercisable on October 17, 2010 (the “Initial Vesting Date”) and thereafter on each one-month anniversary of the Initial Vesting Date
until September 17, 2014 when all Optioned Shares shall be fully vested.

 Upon the occurrence of a Change of Control, the Option shall become exercisable in
accordance with the terms and conditions of the Plan, including without limitation Section 8.2 therein. 
 5.
Stockholders Agreement; Consent of Spouse. As a condition to exercising this Option and receiving any stock certificates representing the Optioned Shares, (a) the Optionee shall, if so requested by the Company, execute and deliver to the
Company the Stockholders Agreement, and become a “Holder” party thereto, and (b) if and to the extent required by the Committee, each and any person who is a spouse of the Optionee at any time on or after the Grant Date (including any
person who becomes a spouse after the Grant Date) executes the Consent of Spouse attached hereto as Exhibit A. The Optionee shall have none of the rights of a stockholder with respect to the Optioned Shares until full payment therefor
has been made and, if so requested by the Company, the Stockholders Agreement has been executed and delivered to the Company by the Optionee. Notwithstanding the foregoing, to the extent the Optioned Shares have become readily tradable on a
nationally recognized exchange or market, then the foregoing provisions of clause (a) of this Section 5 shall not apply. 
 6. Repurchase of Optioned Shares. If the Optionee incurs a termination of employment or other association with the Company and its Affiliates, all or any portion of the Optioned Shares received by
the Optionee upon exercise of this Option, to the extent held by the Optionee at the time of such termination or received by the Optionee upon exercise of all or part of this Option after such termination, may be purchased by the Company, at its
option, within ninety (90) days after the later of (a) such termination or (b) receipt of such Optioned Shares by the Optionee following exercise of all or part of this Option. If such termination is due to death or Disability or is
by the Company other than for Cause or by the Optionee for Good Reason the amount in cash to be paid for the repurchase of such Optioned Shares shall be equal to the Market Value as of the date of such termination multiplied by the number of
such Optioned Shares. If such termination is by the Company for Cause or by the Optionee for any reason other than death, Disability or Good Reason, the amount in cash to be paid for the repurchase of such Optioned Shares shall be equal to the
aggregate purchase price paid for such Optioned Shares. Notwithstanding the foregoing, the Company’s purchase right set forth in this Section 6 shall lapse to the extent the Optioned Shares become readily tradable on a nationally
recognized exchange or market. 
 7. Transfer of Option. Except as otherwise provided in Section 6.3 (and, if
applicable, Section 15.4) of the Plan, the Optionee may not transfer this Option except by will or the laws of descent and distribution, and, during the Optionee’s lifetime, only the Optionee may exercise this Option. 

8. Incorporation of Plan Terms. This Option is granted subject to, and the Optionee hereby expressly agrees to, all of the
applicable terms and provisions of the Plan, including but not limited to the limitations set forth in Section 9 therein. 

9. Tax Consequences. The Company makes no representation or warranty as to the tax treatment to the Optionee of the
Optionee’s receipt or exercise of this Option or upon the Optionee’s sale or other disposition of the Optioned Shares. The Optionee should rely on the Optionee’s own tax advisors for such advice. 

  
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 10. Miscellaneous. This Agreement shall be construed and enforced in accordance with
the laws of the Commonwealth of Massachusetts, without regard to the conflict of laws principles thereof and shall be binding upon and inure to the benefit of any successor or assign of the Company and any executor, administrator, trustee, guardian,
or other legal representative of you. Capitalized terms used but not defined herein shall have the meanings assigned under the Plan. This Agreement may be executed in one or more counterparts all of which together shall constitute but one
instrument. 
 [signature page follows] 

  
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 IN WITNESS WHEREOF, the
parties have executed this Agreement as a sealed instrument as of the date first above written. 
  

			
	Company:
	
	KAYAK SOFTWARE CORPORATION
		
	By:	 	 /s/ D. Stephen Hafner

		 	Name: D. Stephen Hafner
		 	Title: Chief Executive Officer
	
	Optionee:
	
	 /s/ Karen Klein

	Name: Karen Klein
	Address:

 Exhibit A 
 Consent of Spouse 
 (for Residents of Community Property States Only) 

            , 20     

My name is
                             and I am the spouse of
                             (the “Recipient”), the recipient of the Option
(as defined in the Agreement (as defined below)), which Option was granted pursuant to the Kayak Software Corporation 2005 Equity Incentive Plan (the “Plan”). 
 I have read and understand the attached Non-Qualified Stock Option Agreement (the “Agreement”). 
 I understand that, because I am a resident of the State of                      (the
“State”), the community property laws of the State may provide me with certain rights or interests in the Option and the Optioned Shares (as defined in the Agreement). After having considered the terms of the Agreement and my
rights and interests under the community property laws of the State and for good and valuable consideration, receipt of which is hereby acknowledged: 
  

	 	1.	I hereby consent and agree to each and every term and condition set forth in the Agreement. 

 

	 	2.	I hereby understand and agree that the Recipient may join in any future modification or amendment of the Agreement without any further signature, acknowledgment,
agreement or consent on my part. 

  

	 	3.1I	understand that any interest that the Recipient has in the Option or the Optioned Shares is subject to the terms of the Agreement and the Plan.

  

	 	4.	I understand that, by agreeing to the terms of the Agreement and by executing this Consent of Spouse, I may be waiving certain of my rights and interests under the
community property laws of the State. 

 IN WITNESS WHEREOF, the undersigned has executed this Consent of Spouse,
effective as of the date first above written. 
  

	
	  

	Name:

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