X0306 4 2022-02-08 0 0001295810 Sunstone Hotel Investors, Inc. SHO 0001541084 Springer Robert C 200 SPECTRUM CENTER DRIVE 21ST FLOOR IRVINE CA 92618 0 1 0 0 Chief Investment Officer Common Stock 2022-02-08 4 F 0 12548 D 459908 D On February 8, 2022, 22,908 restricted common shares (awarded to the Reporting Person on February 8, 2019) of Sunstone Hotel Investors, Inc. (the "Company") vested, and 12,548 shares of the Company's common stock were withheld to satisfy tax withholding obligations. The closing price on February 8, 2022 of the Company's common stock on the New York Stock Exchange was $11.71 per share. Number of securities rounded to the nearest whole share. /s/ Robert C. Springer 2022-02-10