X0306 4 2013-10-02 0001428205 Armour Residential REIT, Inc. ARR 0001303087 Zimmer Jeffrey J 3001 OCEAN DRIVE SUITE 201 VERO BEACH FL 32963 1 1 Co-CEO, President & Secretary Common Stock, par value $0.001 per share 2013-10-02 4 M 0 17931 A 102720 D See Remarks On October 2, 2013, the reporting person elected to redeem 2,338 shares out of 4,875 shares of vested phantom stock previously granted under ARMOUR Residential REIT, Inc.'s Amended and Restated 2009 Stock Incentive Plan (the "Incentive Plan") into 2,338 shares of ARMOUR common stock. The reporting person also elected to redeem the remaining 2,537 shares of vested phantom stock, but immediately forfeited those shares to pay income taxes on the vesting grant. The 4,875 shares are part of, and relate to, phantom stock vesting over a 5-year period, which was reported on Form 4s filed by the reporting person on April 4, 2011 and April 3, 2012. In addition, on October 2, 2013, the reporting person elected to redeem 6,725 shares out of 13,450 shares of vested phantom stock into 6,725 shares of ARMOUR common stock. The reporting person also elected to redeem the remaining 6,725 shares of vested phantom stock, but immediately forfeited those shares to pay income taxes on the vesting grant. The 13,450 shares are part of, and relateto, phantom stock vesting over a 5-year period, which was reported on a Form 4 filed by the reporting person on April 11, 2012. On October 2, 2013, the reporting person also elected to redeem 8,868 shares out of 26,504 shares of vested phantom stock into 8,868 shares of ARMOUR common stock. The person also elected to redeem the remaining 17,636 shares of vested phantom stock, but immediately forfeited those shares to pay income taxes on the vesting grant. The 26,504 shares are part of, and relate to, phantom stock vesting over a 5-year period, which was reported on a Form 4 filed by the reporting person on March 21, 2013. /s/ Jeffrey J. Zimmer 2013-10-03