SEC Filing Summary

Matthew H. Birenbaum, Chief Investment Officer of AvalonBay Communities Inc., reported a series of transactions on August 17, 2026, related to the merger between AvalonBay Communities Inc. and Equity Residential (EQR). Birenbaum acquired 27,735 shares of common stock through the vesting of performance-based restricted stock units (PSUs). Subsequently, his entire holding of 113,020.9425 shares of AvalonBay common stock was converted into EQR common shares as per the merger agreement, with an exchange ratio of 2.793 EQR shares for each AvalonBay share. Additionally, outstanding stock options for AvalonBay common stock were converted into options for EQR common shares, with adjusted share counts and exercise prices. The net effect of these transactions resulted in zero direct ownership of AvalonBay common stock post-merger.