Document:

Second Amendment to Executive Employment Agreement

 Exhibit 10.27 
 SECOND AMENDMENT 
 TO 

EXECUTIVE EMPLOYMENT AGREEMENT 
 This SECOND AMENDMENT TO EXECUTIVE EMPLOYMENT AGREEMENT (this “Second Amendment”), is made and entered into as of June 26, 2008 (the “Amendment Date”),
between Kayak Software Corporation, a Delaware corporation (the “Company”), and Paul M. English, an individual (the “Executive”). This Second Amendment shall be effective on and as of the date hereof. 

WHEREAS, the Company and the Executive are parties to that certain Executive Employment Agreement, dated as of March 2, 2004
and the First Amendment thereto dated as of March 1, 2007 (together and as may be amended from time to time, the “Agreement”); 
 WHEREAS, the Company and the Employee desire to amend certain provisions of the Agreement; 
 NOW, THEREFORE, in consideration of the foregoing and the agreements herein contained, and intending to be legally bound, the parties hereby agree as follows: 

1. Amendment of Section 3.2 of the Agreement. The Agreement is hereby amended by deleting the text that presently
appears in Section 3.2 thereof in its entirety and inserting in lieu thereof the following: 
 “Bonus.
(a) The Executive shall be eligible to receive an annual bonus of up to 200% of the Executive’s Base Salary, payable at the Executive’s sole discretion either in cash or in the form of an applicable number of shares of Common Stock as
determined in accordance with the following sentence (the “Bonus”). The number of shares of Common Stock to which the Executive shall be entitled with respect to any Bonus shall be equal to the number obtained by
(a) multiplying the aggregate amount of Base Salary earned by the Executive during such year by two (2) and (b) dividing the product thereof by the per share fair market value of one share of the Company’s Common Stock as of the
date of issuance of the Bonus, as determined in good faith by the Board of Directors and (c) multiplying the quotient obtained from clauses (a) and (b) by the percentage of the potential full Bonus actually awarded by the Company. The
Bonus shall be issued or paid as promptly as reasonably practicable after the end of each calendar year, pursuant to, and shall be subject to the terms and restrictions of, the Company’s bonus plan and as applicable, the Amended and Restated
2005 Equity Incentive Plan, as may be amended from time to time. In order to be eligible to receive a Bonus with respect to any calendar year, the Executive must be employed by the Company as of December 31 of such year; provided,
however, that if, prior to the date of actual issuance or payment of any Bonus with respect to a calendar year, the Executive’s employment is terminated for Cause (as defined below), then the Company shall not be obligated to issue, or pay,
such Bonus to the Executive and all rights of the Executive to such Bonus shall be thereby forfeited.” 

 2. Miscellaneous. Except to the extent amended hereby, all of the definitions,
terms, provisions and conditions set forth in each of the Agreement are hereby ratified and confirmed and shall remain in full force and effect. Capitalized terms used herein without definition shall have the respective meanings for such terms set
forth in the Agreement. This Second Amendment 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. In making proof of this Second
Amendment, it shall not be necessary to produce or account for more than one such counterpart. 
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is intentionally left blank.] 

  
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 IN WITNESS WHEREOF, the undersigned have executed this Second Amendment to Executive
Employment Agreement as of the Amendment Date. 
  

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

	Name: D. Stephen Hafner
	Title: CEO
	
	 /s/ Paul M. English

	Paul M. EnglishOffer Letter

 Exhibit 10.28 
 KAYAK 
 Monday, October 22, 2007 
 Ms. Karen Klein 
 274 Columbine Drive 
 Clarendon Hills, IL 60514 
 Dear Karen: 
 I am pleased to offer you the position of General Counsel at Kayak.com (“Kayak”). This position will report to our Norwalk, CT office although we expect you will elect to continue
spending much of your time in Chicago, IL. This letter sets forth the material terms of our offer of employment to you. 
 Start Date.
Your employment will start on a date to be agreed upon by you and Kayak, and is expected to be no later than December 1, 2008. Your employment with Kayak will be “at will,” meaning that either you or Kayak may terminate, and
that Kayak can change the terms of, our employment relationship at any time and for any reason, with or without notice and with or without cause, provided, however, that you will be entitled to receive six (6) months base salary plus bonus and
payment of COBRA insurance coverage for the six (6) month severance term if your employment is terminated as a result of involuntary termination other than for cause. 
 Base Salary. Your starting salary will be $200,000 on an annualized basis, payable according to Kayak’s normal payroll policy and subject to normal tax withholdings. Your salary will be
reviewed periodically, and any adjustment in your salary will be determined by Kayak management in its sole discretion. 
 Annual Bonus.
You will be eligible for an annual incentive bonus up to 100% of your annual base compensation, payable at Kayak’s sole discretion in either cash or restricted stock. Actual payout will based on performance against goals and objectives
established at the beginning of each fiscal year and will be determined by Kayak management in its sole discretion. 
 Stock Options. You
will be permitted to participate in Kayak’s stack incentive plan. Pursuant to the plan, and subject to Board of Director approval we expect you will be granted 200,000 stock options. We anticipate that the shares of common stock subject
to your stock option will be subject to vesting over four years so long as you continue to be employed with Kayak, according to the following schedule: twenty five percent (25%) of such shares will vest on the first anniversary of the date that
you commence employment with Kayak; and the balance of such shares (75%) will vest on a pro rata basis at the end of each monthly period thereafter for the next thirty-six months. Any stock options and restricted stock granted to you will be on
such terms and conditions, including, but not limited to, exercise price, vesting periods and repurchase rights, as are determined by Kayak management in its sole discretion and reflected in an agreement between Kayak and you. 

  

			
	Kayak.com Confidential	 	Page 1 of 2

 Offer Letter 
 Benefits. During your employment, you will be eligible to participate in family healthcare (medical and dental) insurance plans, employee long-term disability and life insurance plans, flexible
spending plan and Kayak’s 401(k) plan, and other benefits made available to Kayak’s leadership team, subject to the terms and conditions of those plans, which may be changed by Kayak from time to time. You are eligible to participate in
the healthcare insurance plans on the first of the month following 30 days from your hire date and are eligible to participate in the other plans on your hire date. 
 Vacation. You will accrue at least three weeks of paid vacation annually, subject to the terms and conditions of Kayak’s vacation policy. Our current policy offers unlimited vacation days
provided that each employee’s job performance remains acceptable. 
 Agreement Regarding Confidentiality and Inventions. As a
condition of employment, you agree to sign and comply with Kayak’s standard agreement regarding confidentiality and assignment of inventions. 
 This letter supercedes any previous discussions, representations and agreements you may have had about the terms of your possible employment with Kayak. By accepting this offer, you agree and acknowledge
that you have not relied, and are not relying, on any oral or written statements, promises or representations made by any employee, agent, or representative of Kayak that are not expressly set forth in this letter. 

Please indicate your acceptance of the terms of this offer letter by signing and dating this letter and returning it to me by October 24, 2007.

 Please do not hesitate to contact me if you have any questions. 
 Sincerely, 
  

	
	Kayak.com
	
	 /s/ Steve Hafner

	Steve Hafner
	CEO & Cofounder
	Kayak.com
	27 Ann Street
	Norwalk CT 06854 US
	Tel +1 203 899-3104
	Fax +1 203 899-3125

 I have carefully read and fully
understand all of the terms of this offer letter and accept employment with Kayak on those terms. 
  

	
	 /s/ Karen Klein

	Karen Klein

			
	Dated:	 	 10/22/07

  

			
	Kayak.com Confidential	 	Page 2 of 2Offer Letter

 Exhibit 10.29 
 KAYAK 
 Thursday, April 09, 2009 
 Mr. Robert Birge 
 46 Lyons Plain Road 

Weston, CT 06883 
 Dear Rob: 

I am pleased to offer you the position of Chief Marketing Officer at Kayak.com (“Kayak”). This position is located in our Norwalk, CT
office and reports directly to our CEO, Steve Hafner. This letter sets forth the material terms of our offer of employment to you. 
 Start
Date. Your employment will start on a date to be agreed upon by you and Kayak, and is expected to be no later than May 15, 2009. Your employment with Kayak will be “at will,” meaning that either you or Kayak may
terminate, and that Kayak can change the terms of, our employment relationship at any time and for any reason, with or without notice and with or without cause, provided, however, that you will be entitled to receive six (6) months base salary
plus bonus and payment of COBRA insurance coverage for the six (6) month severance term if your employment is terminated as a result of involuntary termination other than for cause. 
 Base Salary. Your starting salary will be $300,000 on an annualized basis, payable according to Kayak’s normal payroll policy and subject to normal tax withholdings. Your salary will be
reviewed periodically, and any adjustment in your salary will be determined by Kayak management in its sole discretion. 
 Annual Bonus.
You will be eligible for an annual incentive bonus up to 100% of your annual base compensation, payable at Kayak’s sole discretion in either cash or restricted stock. Actual payout will based on performance against goals and objectives
established at the beginning of each fiscal year and will be determined by Kayak management in its sole discretion. 
 Stock Options. You
will be permitted to participate in Kayak’s stock incentive plan. Pursuant to the plan, and subject to Board of Director approval we expect you will be granted 150,000 stock options. We anticipate that the shares of common stock subject
to your stock option will be subject to vesting over four years so long as you continue to be employed with Kayak, according to the following schedule: twenty five percent (25%) of such shares will vest on the first anniversary of the date that
you commence employment with Kayak; and the balance of such shares (75%) will vest on a pro rata basis at the end of each monthly period thereafter for the next thirty-six months. Any stock options and restricted stock granted to you will be on
such terms and conditions, including, but not limited to, exercise price, vesting periods and repurchase rights, as are determined by Kayak management in its sole discretion and reflected in an agreement between Kayak and you. 

  

			
	Kayak.com Confidential	 	Page 1 of 2

 Offer Letter 
 Benefits. During your employment, you will be eligible to participate in family healthcare (medical and dental) insurance plans, employee long-term disability and life insurance plans, flexible
spending plan and Kayak’s 401(k) plan, and other benefits made available to Kayak’s leadership team, subject to the terms and conditions of those plans, which may be changed by Kayak from time to time. You are eligible to participate in
the healthcare insurance plans on the first of the month following 30 days from your hire date and are eligible to participate in the other plans on your hire date. 
 Vacation. You will accrue at least three weeks of paid vacation annually, subject to the terms and conditions of Kayak’s vacation policy. Our current policy offers unlimited vacation days
provided that each employee’s job performance remains acceptable. 
 Agreement Regarding Confidentiality and Inventions. As a
condition of employment, you agree to sign and comply with Kayak’s standard agreement regarding confidentiality and assignment of inventions. 
 This letter supersedes any previous discussions, representations and agreements you may have had about the terms of your possible employment with Kayak. By accepting this offer, you agree and acknowledge
that you have not relied, and are not relying, on any oral or written statements, promises or representations made by any employee, agent, or representative of Kayak that are not expressly set forth in this letter. 

Please indicate your acceptance of the terms of this offer letter by signing and dating this letter and returning it to me by
April 10, 2009. 
 Please do not hesitate to contact me if you have any questions. 

Sincerely, 
  

	
	Kayak.com
	
	 /s/ Steve Hafner

	 Steve Hafner

	 CEO & Cofounder

	 Kayak.com

	 55 North Water Street, Suite 1

	 Norwalk CT 06854 US

	 Tel +1 203 899-3104

	 Fax +1 203 899-3125

 I have carefully read and fully understand all of the terms of this offer letter and accept employment with Kayak on those terms. 

 

			
	 /s/ Robert Birge

	Robert Birge

  

			
	Dated:	 	         04/09/09

  

			
	Kayak.com Confidential	 	Page 2 of 2

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