X0508 4 2023-08-11 0 0000915912 AVALONBAY COMMUNITIES INC AVB 0001849230 Lockridge Joanne M 4040 WILSON BOULEVARD SUITE 1000 ARLINGTON VA 22203 0 1 0 0 Executive Vice President 0 Common Stock, par value $.01 per share 2023-08-11 4 S 0 3331 186.25 D 21558 D The transaction was executed in multiple trades at prices ranging from $186.20 to $186.395. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected. The amount of securities owned following the reported transaction reflects direct ownership of all shares of common stock, including restricted shares. Edward M. Schulman, as attorney-in-fact under Power of Attorney dated February 28, 2021 2023-08-15