KILROY REALTY CORPORATION Common Stock UNDERWRITING AGREEMENT dated April 6, 2011 Merrill Lynch, Pierce, Fenner & Smith Incorporated Barclays Capital Inc. J.P. Morgan Securities LLCUnderwriting Agreement • April 11th, 2011 • Kilroy Realty, L.P. • Real estate investment trusts • New York
participation in the filing of) of a registration statement with the Securities and Exchange Commission in respect of, any shares of Common Stock or Common Units or any securities exchangeable or exercisable for or convertible into shares of Common Stock or Common Units currently or hereafter owned either of record or beneficially (as defined in Rule 13d-3 under the Securities Exchange Act of 1934, as amended) by the undersigned (or such spouse or family member), or publicly announce an intention to do any of the foregoing, for a period commencing on the date hereof and continuing through the close of trading on the date 60 days after the date of the final prospectus relating to the Offering (the “Lock-Up Period”). The restrictions set forth in the immediately preceding sentence shall not apply to (i) the surrender of Common Units to the Company or the Operating Partnership in connection with the redemption of such Common Units pursuant to the Fifth Amended and Restated Agreement of Li
