X0303 4 2010-07-09 0001423689 American Capital Agency Corp AGNC 0001434805 Kain Gary D 2 BETHESDA METRO CENTER 14TH FLOOR BETHESDA MD 20814 0 1 0 0 CIO and SVP Common Stock, par value $0.01 per share 2010-07-09 4 S 0 778 27.455 D 56780.37 D Sales made pursuant to a previously established Rule 10b5-1 Plan. Includes 2,453 shares allocated from the dividend declared by the Company on March 16, 2010, payable to shareholders of record as of March 31, 2010. By Samuel A. Flax, as attorney-in-fact for Gary Kain 2010-07-12