Kilroy Realty Corporation announced John B. Kilroy, Jr., chief executive Officer and chairman of the board of directors of the company announced his retirement as chief executive officer effective as of the end of the year. The company's board of directors intends to retain a leading executive search firm to assist in a comprehensive search for the company's next chief executive officer, which will include internal candidates and external candidates, with a targeted start date of January 1, 2024.