X0202 4 2007-02-01 0001140486 ATHEROS COMMUNICATIONS INC ATHR 0001277624 LAZAR JACK R C/O ATHEROS COMMUNICATIONS, INC. 5480 GREAT AMERICA PARKWAY SANTA CLARA, CA 95054 0 1 0 0 Chief Financial Officer and VP Common Stock 2007-02-01 4 M 0 37500 2.26 A 37500 D Common Stock 2007-02-01 4 S 0 800 24.27 D 36700 D Common Stock 2007-02-01 4 S 0 280 24.26 D 36420 D Common Stock 2007-02-01 4 S 0 260 24.25 D 36160 D Common Stock 2007-02-01 4 S 0 320 24.24 D 35840 D Common Stock 2007-02-01 4 S 0 260 24.23 D 35580 D Common Stock 2007-02-01 4 S 0 700 24.22 D 34880 D Common Stock 2007-02-01 4 S 0 2903 24.21 D 31977 D Common Stock 2007-02-01 4 S 0 20 24.209 D 31957 D Common Stock 2007-02-01 4 S 0 20 24.205 D 31937 D Common Stock 2007-02-01 4 S 0 4720 24.20 D 27217 D Common Stock 2007-02-01 4 S 0 920 24.19 D 26297 D Common Stock 2007-02-01 4 S 0 1060 24.18 D 25237 D Common Stock 2007-02-01 4 S 0 280 24.17 D 24957 D Common Stock 2007-02-01 4 S 0 540 24.16 D 24417 D Common Stock 2007-02-01 4 S 0 180 24.15 D 24237 D Common Stock 2007-02-01 4 S 0 300 24.13 D 23937 D Common Stock 2007-02-01 4 S 0 417 24.12 D 23520 D Common Stock 2007-02-01 4 S 0 20 24.11 D 23500 D Common Stock 2007-02-01 4 S 0 702 24.10 D 22798 D Common Stock 2007-02-01 4 S 0 180 24.099 D 22618 D Common Stock 2007-02-01 4 S 0 762 24.09 D 21856 D Common Stock 2007-02-01 4 S 0 301 24.089 D 21555 D Common Stock 2007-02-01 4 S 0 659 24.08 D 20896 D Common Stock 2007-02-01 4 S 0 340 24.06 D 20556 D Common Stock 2007-02-01 4 S 0 760 24.05 D 19796 D Common Stock 2007-02-01 4 S 0 860 24.03 D 18936 D Common Stock 2007-02-01 4 S 0 520 24.02 D 18416 D Common Stock 2007-02-01 4 S 0 1656 24.01 D 16760 D Common Stock 2007-02-01 4 S 0 160 24.009 D 16600 D Employee Stock Options (right to buy) 2.26 2007-02-01 4 M 0 37500 0 D 2003-10-03 2013-10-03 Common Stock 37500 159882 D The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan. All of the options became exercisable on 10/03/2003. The shares underlying the options are subject to the issuer's right of repurchase which lapsed as to 25% of the shares on 09/29/2004, and lapses as to the remaining shares in 36 equal monthly installments beginning on 10/29/2004. Remarks: Form 4 Filing 1 of 2 (continuation report): Related transactions effected by the Reporting Person on February 1, 2007 are reported on additional Forms 4. Bruce P. Johnson, Attorney-in-fact 2007-02-02