X0206 3 2012-08-03 0 0001312928 KAYAK SOFTWARE Corp KYAK 0001365607 OAK INVESTMENT PARTNERS XII L P 901 MAIN AVENUE, SUITE 600 NORWALK CT 06851 0 0 1 0 CLASS A COMMON STOCK 292027 D CLASS B COMMON STOCK 0 CLASS A COMMON STOCK 3585272 D Represents shares directly owned by Oak Investment Partners XII, Limited Partnership, a Delaware limited partnership ("Oak XII"). 208,525 shares of Class A Common Stock were purchased at $26.00 per share pursuant to a purchase right set forth in the Election and Amendment Agreement, dated April 19, 2012, between the Issuer, Oak XII and certain of its other stockholders (the "Election and Amendment Agreement"), which occurred on August 3, 2012. In addition, 83,502 shares of Class A Common Stock were issued by Issuer to Oak XII for no cash consideration on or about July 25, 2012 in accordance with the Election and Amendment Agreement. Immediately convertible. No expiration date. Oak XII is the direct owner of the securities reported above. This Form 4 is being filed by Oak XII and Oak Associates XII, LLC, a Delaware limited liability company ("Oak Associates" and together with Oak XII, the "Reporting Persons"). Oak Associates, the general partner of Oak XII, may be deemed to be an indirect beneficial owner of such reported securities, and is a Reporting Person hereunder. Each of the Reporting Persons disclaims beneficial ownership (as defined in Rule 16a-1(a)(2)) of the securities reported herein except to the extent of its pecuniary interest therein. /s/Iftikar A. Ahmed, Managing Member of Oak Associates XII, LLC, the general partner of Oak Investment Partners XII, Limited Partnership 2012-08-08 s/Iftikar A. Ahmed, Managing Member of Oak Associates XII, LLC 2012-08-08