Form 4 Filing for Conor C. Flynn

This filing details a transaction by Conor C. Flynn, a director at AVALONBAY COMMUNITIES INC. On May 19, 2026, Flynn acquired 135 shares of Common Stock (par value $.01 per share) with a transaction value of $0. This acquisition is part of a grant of Deferred Stock Units (DSUs) under the issuer's equity incentive plan, where Flynn elected to receive DSUs in lieu of his quarterly cash director's fee. These DSUs will convert into common stock on a one-to-one basis after Flynn ceases to be a director. Following this transaction, Flynn directly owns 921.2032 shares, including any vested or unvested DSUs.