X0203 3 2010-01-22 0 0001140486 ATHEROS COMMUNICATIONS INC ATHR 0001017379 HARRIS CHARLES E C/O ATHEROS COMMUNICATIONS, INC. 5480 GREAT AMERICA PARKWAY SANTA CLARA CA 95054 1 0 0 0 Common Stock 164935 D Employee Stock Options (right to buy) 38.30 2009-12-15 2017-07-26 Common Stock 20563 D Employee Stock Options (right to buy) 8.41 2009-12-15 2019-02-26 Common Stock 31225 D Received in connection with the merger of Intellon Corporation ("Intellon") into the Issuer (the "Merger") on December 15, 2009, in exchange for (a) 1,042,806 shares of Intellon common stock, which converted into common stock of the Issuer at an exchange ratio of 0.134412; (b) 32,830 shares of Intellon common stock, which converted into common stock of the Issuer at an exchange ratio of 0.145039; and (c) 74,940 restricted stock units of Intellon, which converted into restricted stock units of the Issuer at an exchange ratio of 0.267008 and which vested in full immediately upon the Merger. Received in connection with the Merger on December 15, 2009, in exchange for employee stock options to acquire (a) 82,320 shares of Intellon common stock at an exercise price of $9.5664 per share; and (b) 125,000 shares of Intellon common stock at an exercise price of $2.10 per share. The exchange ratio was 0.2498. The options vested in full immediately upon the Merger. Bruce P. Johnson, Attorney-in-fact 2010-01-25