SEC Form 4
FORM 4 UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
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 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
1. Name and Address of Reporting Person*
TACHNER ADAM H
(Last) (First) (Middle)
C/O ATHEROS COMMUNICATIONS, INC.
1700 TECHNOLOGY DRIVE
(Street)
SAN JOSE, CA 95110
(City) (State) (Zip)
2. Issuer Name and Ticker or Trading Symbol
ATHEROS COMMUNICATIONS INC [ ATHR ] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director 10% Owner
X Officer (give title below) Other (specify below)
VP & General Counsel
3. Date of Earliest Transaction (Month/Day/Year)
05/24/2011
4. If Amendment, Date of Original Filed (Month/Day/Year)
 6. Individual or Joint/Group Filing (Check Applicable Line)
X Form filed by One Reporting Person
Form filed by More than One Reporting Person
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V Amount (A) or (D) Price
Common Stock 05/24/2011 A 23,200(1) A $0(1) 65,091 D
Common Stock 05/24/2011 D 11,000(2) D $0(2) 65,091 D
Common Stock 05/24/2011 D 49,993(3) D $0(3) 15,098 D
Common Stock 05/24/2011 D 15,098 D $45(4) 0 D
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 6. Date Exercisable and Expiration Date (Month/Day/Year) 7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Employee Stock Options (right to buy) $3.34 05/24/2011 D 4,500 (5) 11/11/2013 Common Stock 4,500 $0(6) 0 D
Employee Stock Options (right to buy) $10.03 05/24/2011 D 50,000 (5) 01/20/2015 Common Stock 50,000 $0(6) 0 D
Employee Stock Options (right to buy) $24.4 05/24/2011 D 30,000 (5) 02/01/2014 Common Stock 30,000 $0(6) 0 D
Employee Stock Options (right to buy) $27.37 05/24/2011 D 30,000 (7) 02/12/2015 Common Stock 30,000 $0(6) 0 D
Employee Stock Options (right to buy) $34.02 05/24/2011 D 25,000 (8) 02/10/2017 Common Stock 25,000 $0(6) 0 D
Explanation of Responses:
1. Consists of restricted stock units ("RSUs") that were granted on 5/24/2011.
2. Consists of RSUs that were granted on 1/16/2011, that would vest subject to the Issuer's satisfaction of certain performance criteria for the fiscal year ended 12/31/2011; provided, however, that upon the closing of the merger contemplated by that certain Agreement and Plan of Merger dated as of January 5, 2011 (the "Merger Agreement"), by and among the Issuer, Qualcomm Incorporated ("Qualcomm") and T Merger Sub, Inc., a Delaware corporation and a wholly owned subsidiary of Qualcomm ("Merger Sub"), pursuant to which Merger Sub merged with and into the Issuer with the Issuer surviving as a wholly owned subsidiary of Qualcomm (the "Merger"), these RSUs were cancelled and converted into RSUs for a number of shares of Qualcomm common stock determined by multiplying the number of shares of Issuer common stock subject to these RSUs by approximately 0.791. These RSUs will vest on a time-based schedule.
3. Consists of RSUs that were cancelled and converted into RSUs for a number of shares of Qualcomm common stock determined by multiplying the number of shares of Issuer common stock subject to these RSUs by approximately 0.791, subject to substantially the same terms and conditions as applied to these RSUs, pursuant to the Merger Agreement.
4. Disposed of pursuant to the Merger Agreement in exchange for $45.00 per share on the effective date of the Merger.
5. The options are fully vested and exercisable.
6. This option was cancelled and converted into an option to purchase a number of shares of Qualcomm common stock determined by multiplying the number of shares of Issuer common stock underlying the option by approximately 0.791, subject to substantially the same terms and conditions as applied to this option, pursuant to the Merger Agreement.
7. The options become exercisable in 48 equal monthly installments commencing on 3/13/2008.
8. The options become exercisable in 48 equal monthly installments commencing on 3/11/2010.
Remarks:
Bruce P. Johnson, Attorney-in-fact 05/24/2011
** Signature of Reporting Person Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
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