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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1140486	Atheros Communications Inc	ATHR	Semiconductors & Related Devices (3674)	770485570

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1339722	D Ben Naskar	C/O Atheros Communications, Inc. 5480 Great America Parkway Santa Clara, CA 95054	Vice President & Gm	No	Yes	No	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership
Common Stock	Acquisiton	2010-02-16	347	$27.37	84,099	No	4	M	Direct
Common Stock	Disposition	2010-02-16	347	$35.30	83,752	No	4	S	Direct
Common Stock	Acquisiton	2010-02-17	174	$27.37	83,926	No	4	M	Direct
Common Stock	Disposition	2010-02-17	174	$36.00	83,752	No	4	S	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership
No	4	M	Direct
No	4	S	Direct
No	4	M	Direct
No	4	S	Direct

Reported Derivative Transactions

Sec. Name	Sec. Type	Acquisiton - Disposition	Date	Amount	Price	Amount - 2	Price - 2
Common Stock	Employee Stock Options (right to buy)	Disposition	2010-02-16	347	$0.00	347	$27.37
Common Stock	Employee Stock Options (right to buy)	Disposition	2010-02-17	174	$0.00	174	$27.37

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
12,674		2015-02-12	No	4	M	Direct
12,500		2015-02-12	No	4	M	Direct

Footnotes

The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan.
Represents the weighted average sales price for a number of sale transactions effected at prices ranging from $35.30 to $35.31. The Reporting Person has provided to the issuer, and undertakes to provide upon request by the SEC staff, or any security holder of the issuer, information regarding the number of shares sold at each separate price within the range.
The options become exercisable in 48 equal monthly installments commencing on March 13, 2008.