UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2019 Commission file number 1-12672 AVALONBAY COMMUNITIES, INC. (Exact name of registrant as specified in its charter) Maryland 77-0404318 (State or other jurisdiction of (I.R.S. Employer incorporation or organization) Identification No.) Ballston Tower 671 N. Glebe Rd, Suite 800 Arlington, Virginia 2 ...