X0303 4 2010-06-02 0 0000920522 ESSEX PROPERTY TRUST INC ESS 0001318689 Dance Michael T C/O ESSEX PROPERTY TRUST, INC. 925 EAST MEADOW DRIVE PALO ALTO CA 94303 0 1 0 0 Executive V.P. & CFO Common Stock 2010-06-02 4 C 0 6000 A 15275 I Family Trust Incentive Units 2010-06-02 4 C 0 6000 1 D 2010-06-02 Common Stock 6000 0 D The reporting person exchanged 6,000 series Z-1 incentive units of Essex Portfolio, L.P. (EPLP) into 6,000 common units of EPLP and in turn exchanged such common units into 6,000 shares of the issuer. The issuer is the general partner of EPLP. Common units of EPLP have no set expiration date. All of the common stock issued is subject to liquidity restrictions and cannot be sold until December 2014. Represents the number of series Z-1 incentive units held by the reporting person after the transaction covered by this Form 4. /s/ Michael T. Dance 2010-06-03