================================================================================ UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 13G (Rule 13d-102) INFORMATION TO BE INCLUDED IN STAEMENTS FILED PURSUANT TO RULES 13d-1 (b) (c), AND (d) AND AMENDMENTS THERETO FILED PURSUANT TO RULE 13d-2(b) (AMENDMENT NO. )* Atheros Communications, Inc. -------------------------------------------------------------------------------- (Name of Issuer) Common Stock, $.0005 par value per share -------------------------------------------------------------------------------- (Title of Class of Securities) 04743P108 --------- (CUSIP Number) December 31, 2004 -------------------------------------------------------------------------------- (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this Schedule is filed: [_] Rule 13d-1(b) [_] Rule 13d-1(c) [X] Rule 13d-1(d) *The remainder of this cover page shall be filled out for a reporting person's initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter the disclosures provided in a prior cover page. The information required in the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes). ================================================================================ ------------------- ------------------ CUSIP No. 04743P108 13G Page 2 of 27 Pages ------------------- ------------------ ================================================================================ 1 NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) New Enterprise Associates 9, Limited Partnership -------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP * (a)[ ] (b)[ ] -------------------------------------------------------------------------------- 3 SEC USE ONLY -------------------------------------------------------------------------------- 4 CITIZENSHIP OR PLACE OF ORGANIZATION Delaware -------------------------------------------------------------------------------- 5 SOLE VOTING POWER 0 shares NUMBER OF ----------------------------------------------------- SHARES 6 SHARED VOTING POWER BENEFICIALLY OWNED BY 3,895,794 shares EACH ----------------------------------------------------- REPORTING 7 SOLE DISPOSITIVE POWER PERSON WITH: 0 shares ----------------------------------------------------- 8 SHARED DISPOSITIVE POWER 3,895,794 shares -------------------------------------------------------------------------------- 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 3,895,794 shares -------------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES * [ ] -------------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 8.2% -------------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON * PN ================================================================================ *SEE INSTRUCTIONS BEFORE FILLING OUT! Page 2 of 27 Pages ------------------- ------------------ CUSIP No. 04743P108 13G Page 3 of 27 Pages ------------------- ------------------ ================================================================================ 1 NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) NEA Partners 9, Limited Partnership -------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP * (a)[ ] (b)[ ] -------------------------------------------------------------------------------- 3 SEC USE ONLY -------------------------------------------------------------------------------- 4 CITIZENSHIP OR PLACE OF ORGANIZATION Delaware -------------------------------------------------------------------------------- 5 SOLE VOTING POWER 0 shares NUMBER OF ----------------------------------------------------- SHARES 6 SHARED VOTING POWER BENEFICIALLY OWNED BY 3,895,794 shares EACH ----------------------------------------------------- REPORTING 7 SOLE DISPOSITIVE POWER PERSON WITH: 0 shares ----------------------------------------------------- 8 SHARED DISPOSITIVE POWER 3,895,794 shares -------------------------------------------------------------------------------- 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 3,895,794 shares -------------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES * [ ] -------------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 8.2% -------------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON * PN ================================================================================ *SEE INSTRUCTIONS BEFORE FILLING OUT! Page 3 of 27 Pages ------------------- ------------------ CUSIP No. 04743P108 13G Page 4 of 27 Pages ------------------- ------------------ ================================================================================ 1 NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) New Enterprise Associates 10, Limited Partnership -------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP * (a)[ ] (b)[ ] -------------------------------------------------------------------------------- 3 SEC USE ONLY -------------------------------------------------------------------------------- 4 CITIZENSHIP OR PLACE OF ORGANIZATION Delaware -------------------------------------------------------------------------------- 5 SOLE VOTING POWER 0 shares NUMBER OF ----------------------------------------------------- SHARES 6 SHARED VOTING POWER BENEFICIALLY OWNED BY 3,895,794 shares EACH ----------------------------------------------------- REPORTING 7 SOLE DISPOSITIVE POWER PERSON WITH: 0 shares ----------------------------------------------------- 8 SHARED DISPOSITIVE POWER 3,895,794 shares -------------------------------------------------------------------------------- 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 3,895,794 shares -------------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES * [ ] -------------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 8.2% -------------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON * PN ================================================================================ *SEE INSTRUCTIONS BEFORE FILLING OUT! Page 4 of 27 Pages ------------------- ------------------ CUSIP No. 04743P108 13G Page 5 of 27 Pages ------------------- ------------------ ================================================================================ 1 NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) NEA Partners 10, Limited Partnership -------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP * (a)[ ] (b)[ ] -------------------------------------------------------------------------------- 3 SEC USE ONLY -------------------------------------------------------------------------------- 4 CITIZENSHIP OR PLACE OF ORGANIZATION Delaware -------------------------------------------------------------------------------- 5 SOLE VOTING POWER 0 shares NUMBER OF ----------------------------------------------------- SHARES 6 SHARED VOTING POWER BENEFICIALLY OWNED BY 3,895,794 shares EACH ----------------------------------------------------- REPORTING 7 SOLE DISPOSITIVE POWER PERSON WITH: 0 shares ----------------------------------------------------- 8 SHARED DISPOSITIVE POWER 3,895,794 shares -------------------------------------------------------------------------------- 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 3,895,794 shares -------------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES * [ ] -------------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 8.2% -------------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON * PN ================================================================================ *SEE INSTRUCTIONS BEFORE FILLING OUT! Page 5 of 27 Pages ------------------- ------------------ CUSIP No. 04743P108 13G Page 6 of 27 Pages ------------------- ------------------ ================================================================================ 1 NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) New Enterprise Associates 11, Limited Partnership -------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP * (a)[ ] (b)[ ] -------------------------------------------------------------------------------- 3 SEC USE ONLY -------------------------------------------------------------------------------- 4 CITIZENSHIP OR PLACE OF ORGANIZATION Delaware -------------------------------------------------------------------------------- 5 SOLE VOTING POWER 0 shares NUMBER OF ----------------------------------------------------- SHARES 6 SHARED VOTING POWER BENEFICIALLY OWNED BY 3,895,794 shares EACH ----------------------------------------------------- REPORTING 7 SOLE DISPOSITIVE POWER PERSON WITH: 0 shares ----------------------------------------------------- 8 SHARED DISPOSITIVE POWER 3,895,794 shares -------------------------------------------------------------------------------- 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 3,895,794 shares -------------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES * [ ] -------------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 8.2% -------------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON * PN ================================================================================ *SEE INSTRUCTIONS BEFORE FILLING OUT! Page 6 of 27 Pages ------------------- ------------------ CUSIP No. 04743P108 13G Page 7 of 27 Pages ------------------- ------------------ ================================================================================ 1 NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) NEA Partners 11, Limited Partnership -------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP * (a)[ ] (b)[ ] -------------------------------------------------------------------------------- 3 SEC USE ONLY -------------------------------------------------------------------------------- 4 CITIZENSHIP OR PLACE OF ORGANIZATION Delaware -------------------------------------------------------------------------------- 5 SOLE VOTING POWER 0 shares NUMBER OF ----------------------------------------------------- SHARES 6 SHARED VOTING POWER BENEFICIALLY OWNED BY 3,895,794 shares EACH ----------------------------------------------------- REPORTING 7 SOLE DISPOSITIVE POWER PERSON WITH: 0 shares ----------------------------------------------------- 8 SHARED DISPOSITIVE POWER 3,895,794 shares -------------------------------------------------------------------------------- 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 3,895,794 shares -------------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES * [ ] -------------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 8.2% -------------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON * PN ================================================================================ *SEE INSTRUCTIONS BEFORE FILLING OUT! Page 7 of 27 Pages ------------------- ------------------ CUSIP No. 04743P108 13G Page 8 of 27 Pages ------------------- ------------------ ================================================================================ 1 NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) NEA 11 GP, LLC -------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP * (a)[ ] (b)[ ] -------------------------------------------------------------------------------- 3 SEC USE ONLY -------------------------------------------------------------------------------- 4 CITIZENSHIP OR PLACE OF ORGANIZATION Delaware -------------------------------------------------------------------------------- 5 SOLE VOTING POWER 0 shares NUMBER OF ----------------------------------------------------- SHARES 6 SHARED VOTING POWER BENEFICIALLY OWNED BY 3,895,794 shares EACH ----------------------------------------------------- REPORTING 7 SOLE DISPOSITIVE POWER PERSON WITH: 0 shares ----------------------------------------------------- 8 SHARED DISPOSITIVE POWER 3,895,794 shares -------------------------------------------------------------------------------- 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 3,895,794 shares -------------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES * [ ] -------------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 8.2% -------------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON * OO ================================================================================ *SEE INSTRUCTIONS BEFORE FILLING OUT! Page 8 of 27 Pages ------------------- ------------------ CUSIP No. 04743P108 13G Page 9 of 27 Pages ------------------- ------------------ ================================================================================ 1 NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) Peter J. Barris -------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP * (a)[ ] (b)[ ] -------------------------------------------------------------------------------- 3 SEC USE ONLY -------------------------------------------------------------------------------- 4 CITIZENSHIP OR PLACE OF ORGANIZATION United States -------------------------------------------------------------------------------- 5 SOLE VOTING POWER 0 shares NUMBER OF ----------------------------------------------------- SHARES 6 SHARED VOTING POWER BENEFICIALLY OWNED BY 3,895,794 shares EACH ----------------------------------------------------- REPORTING 7 SOLE DISPOSITIVE POWER PERSON WITH: 0 shares ----------------------------------------------------- 8 SHARED DISPOSITIVE POWER 3,895,794 shares -------------------------------------------------------------------------------- 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 3,895,794 shares -------------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES * [ ] -------------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 8.2% -------------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON * IN ================================================================================ *SEE INSTRUCTIONS BEFORE FILLING OUT! Page 9 of 27 Pages ------------------- ------------------- CUSIP No. 04743P108 13G Page 10 of 27 Pages ------------------- ------------------- ================================================================================ 1 NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) C. Richard Kramlich -------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP * (a)[ ] (b)[ ] -------------------------------------------------------------------------------- 3 SEC USE ONLY -------------------------------------------------------------------------------- 4 CITIZENSHIP OR PLACE OF ORGANIZATION United States -------------------------------------------------------------------------------- 5 SOLE VOTING POWER 0 shares NUMBER OF ----------------------------------------------------- SHARES 6 SHARED VOTING POWER BENEFICIALLY OWNED BY 3,895,794 shares EACH ----------------------------------------------------- REPORTING 7 SOLE DISPOSITIVE POWER PERSON WITH: 0 shares ----------------------------------------------------- 8 SHARED DISPOSITIVE POWER 3,895,794 shares -------------------------------------------------------------------------------- 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 3,895,794 shares -------------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES * [ ] -------------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 8.2% -------------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON * IN ================================================================================ *SEE INSTRUCTIONS BEFORE FILLING OUT! Page 10 of 27 Pages ------------------- ------------------- CUSIP No. 04743P108 13G Page 11 of 27 Pages ------------------- ------------------- ================================================================================ 1 NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) Peter T. Morris -------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP * (a)[ ] (b)[ ] -------------------------------------------------------------------------------- 3 SEC USE ONLY -------------------------------------------------------------------------------- 4 CITIZENSHIP OR PLACE OF ORGANIZATION United States -------------------------------------------------------------------------------- 5 SOLE VOTING POWER 0 shares NUMBER OF ----------------------------------------------------- SHARES 6 SHARED VOTING POWER BENEFICIALLY OWNED BY 3,895,794 shares EACH ----------------------------------------------------- REPORTING 7 SOLE DISPOSITIVE POWER PERSON WITH: 0 shares ----------------------------------------------------- 8 SHARED DISPOSITIVE POWER 3,895,794 shares -------------------------------------------------------------------------------- 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 3,895,794 shares -------------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES * [ ] -------------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 8.2% -------------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON * IN ================================================================================ *SEE INSTRUCTIONS BEFORE FILLING OUT! Page 11 of 27 Pages ------------------- ------------------- CUSIP No. 04743P108 13G Page 12 of 27 Pages ------------------- ------------------- ================================================================================ 1 NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) John M. Nehra -------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP * (a)[ ] (b)[ ] -------------------------------------------------------------------------------- 3 SEC USE ONLY -------------------------------------------------------------------------------- 4 CITIZENSHIP OR PLACE OF ORGANIZATION United States -------------------------------------------------------------------------------- 5 SOLE VOTING POWER 0 shares NUMBER OF ----------------------------------------------------- SHARES 6 SHARED VOTING POWER BENEFICIALLY OWNED BY 3,594,356 shares EACH ----------------------------------------------------- REPORTING 7 SOLE DISPOSITIVE POWER PERSON WITH: 0 shares ----------------------------------------------------- 8 SHARED DISPOSITIVE POWER 3,594,356 shares -------------------------------------------------------------------------------- 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 3,594,356 shares -------------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES * [ ] -------------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 7.6% -------------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON * IN ================================================================================ *SEE INSTRUCTIONS BEFORE FILLING OUT! Page 12 of 27 Pages ------------------- ------------------- CUSIP No. 04743P108 13G Page 13 of 27 Pages ------------------- ------------------- ================================================================================ 1 NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) Charles W. Newhall III -------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP * (a)[ ] (b)[ ] -------------------------------------------------------------------------------- 3 SEC USE ONLY -------------------------------------------------------------------------------- 4 CITIZENSHIP OR PLACE OF ORGANIZATION United States -------------------------------------------------------------------------------- 5 SOLE VOTING POWER 0 shares NUMBER OF ----------------------------------------------------- SHARES 6 SHARED VOTING POWER BENEFICIALLY OWNED BY 3,895,794 shares EACH ----------------------------------------------------- REPORTING 7 SOLE DISPOSITIVE POWER PERSON WITH: 0 shares ----------------------------------------------------- 8 SHARED DISPOSITIVE POWER 3,895,794 shares -------------------------------------------------------------------------------- 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 3,895,794 shares -------------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES * [ ] -------------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 8.2% -------------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON * IN ================================================================================ *SEE INSTRUCTIONS BEFORE FILLING OUT! Page 13 of 27 Pages ------------------- ------------------- CUSIP No. 04743P108 13G Page 14 of 27 Pages ------------------- ------------------- ================================================================================ 1 NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) Mark W. Perry -------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP * (a)[ ] (b)[ ] -------------------------------------------------------------------------------- 3 SEC USE ONLY -------------------------------------------------------------------------------- 4 CITIZENSHIP OR PLACE OF ORGANIZATION United States -------------------------------------------------------------------------------- 5 SOLE VOTING POWER 0 shares NUMBER OF ----------------------------------------------------- SHARES 6 SHARED VOTING POWER BENEFICIALLY OWNED BY 3,895,794 shares EACH ----------------------------------------------------- REPORTING 7 SOLE DISPOSITIVE POWER PERSON WITH: 0 shares ----------------------------------------------------- 8 SHARED DISPOSITIVE POWER 3,895,794 shares -------------------------------------------------------------------------------- 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 3,895,794 shares -------------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES * [ ] -------------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 8.2% -------------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON * IN ================================================================================ *SEE INSTRUCTIONS BEFORE FILLING OUT! Page 14 of 27 Pages Item 1(a). Name of Issuer: Atheros Communications, Inc. -------------- Item 1(b). Address of Issuer's Principal Executive Offices: ----------------------------------------------- 529 Almanor Avenue, Sunnyvale, CA 94085. Item 2(a). Names of Persons Filing: ----------------------- New Enterprise Associates 9, Limited Partnership ("NEA 9"); New Enterprise Associates 10, Limited Partnership ("NEA 10") and New Enterprise Associates 11, Limited Partnership ("NEA 11"), (collectively, the "Funds"); NEA Partners 9, Limited Partnership ("NEA Partners 9"), which is the sole general partner of NEA 9; NEA Partners 10, Limited Partnership ("NEA Partners 10"), which is the sole general partner of NEA 10; NEA Partners 11, Limited Partnership ("NEA Partners 11"), which is the sole general partner of NEA 11, (collectively, the "GPLPs"); NEA 11 GP, LLC (the "GPLLC") which is the sole general partner of NEA Partners 11; Peter J. Barris ("Barris"), C. Richard Kramlich ("Kramlich"), Peter T. Morris ("Morris"), John M. Nehra ("Nehra"), Charles W. Newhall III ("Newhall") and Mark W. Perry ("Perry"), (each a "General Partner" and collectively, the "General Partners"). Barris, Kramlich, Morris, Nehra, Newhall and Perry are individual general partners of NEA Partners 9. Barris, Kramlich, Morris, Newhall and Perry are individual general partners of NEA Partners 10. Barris, Kramlich, Morris, Newhall and Perry are individual managers of the GPLLC (each a "Manager and collectively the "Managers") The persons named in this paragraph are referred to individually herein as a "Reporting Person" and collectively as the "Reporting Persons." Item 2(b). Address of Principal Business Office or, if None, Residence: ----------------------------------------------------------- The address of the principal business office of NEA 9, NEA Partners 9, NEA 10, NEA Partners 10, NEA 11, NEA Partners 11, the GPLLC, Nehra and Newhall is New Enterprise Associates, 1119 St. Paul Street, Baltimore, Maryland 21202. The address of the principal business office of Kramlich, Morris and Perry is New Enterprise Associates, 2490 Sand Hill Road, Menlo Park, California 94025. The address of the principal business office of Barris is 11951 Freedom Drive, Suite 1240, Reston, Virginia 20190. Item 2(c). Citizenship: ----------- Each of NEA 9, NEA Partners 9, NEA 10, NEA Partners 10, NEA 11 and NEA Partners 11 is a limited partnership organized under the laws of the State of Delaware. The GPLLC is a limited liability company organized under the laws of the state of Delaware. Each of the General Partners and the Managers is a United States citizen. Item 2(d). Title of Class of Securities: ---------------------------- Common Stock, $.0005 par value ("Common Stock"). Item 2(e). CUSIP Number: 04743P108. ------------ Item 3. If this statement is filed pursuant to ss.ss. 240.13d- 1(b) or -------------------------------------------------------------- 240.13d-2(b) or (c), check whether the person filing is a: ---------------------------------------------------------- (a) [_] Broker or Dealer registered under Section 15 of the Securities Exchange Act of 1934 (the "Act"). (b) [_] Bank as defined in Section 3(a)(6) of the Act. (c) [_] Insurance Company as defined in Section 3(a)(19) of the Act. (d) [_] Investment Company registered under Section 8 of the Investment Company Act of 1940. (e) [_] Investment Adviser in accordance with ss.240.13d-1(b)(1)(ii)(E). (f) [_] An employee benefit plan or endowment fund in accordance with ss.240.13d-1(b)(1)(ii)(F). (g) [_] A Parent Holding Company, in accordance with ss.240.13d-1(b)(1)(ii)(G). (h) [_] A savings association as defined in Section 3(b) of the Federal Deposit Insurance Act. (i) [_] A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940. (j) [_] Group, in accordance with ss.240.13d-1(b)(1)(ii)(J). None of the above. Item 4. Ownership. --------- (a) Amount Beneficially Owned: NEA 9 is the record owner of 3,594,356 shares of Common Stock (the "NEA 9 Shares") as of December 31, 2004. As the sole general partner of NEA 9, NEA Partners 9 may be deemed to own beneficially the NEA 9 Shares. NEA 10 is the record owner of 100,478 shares of Common Stock (the "NEA 10 Shares") as of December 31, 2004. As the sole general partner of NEA 10, NEA Partners 10 may be deemed to own beneficially the NEA 10 Shares. NEA 11 is the record owner of 200,960 shares of Common Stock (the "NEA 11 Shares") as of December 31, 2004. As the sole general partner of NEA 11, NEA Partners 11 may be deemed to own beneficially the NEA 11 Shares and as the sole general partner of NEA Partners 11, the GPLLC may be deemed to own beneficially the NEA 11 Shares. By virtue of their relationship as affiliated limited partnerships, whose general partners have overlapping individual general partners, each Fund may be deemed to share the power to direct the disposition and vote of the NEA 9 Shares, the NEA 10 Shares and the NEA 11 Shares for an aggregate of 3,895,794 shares (the "Record Shares"). As general partners of the Funds, the GPLPs and the GPLLC may also be deemed to own beneficially all of the Record Shares. As individual general partners of the GPLPs, each General Partner, except Nehra, may be deemed to own beneficially all of the Record Shares. Nehra may be deemed to own beneficially the NEA 9 Shares. As individual managers of the GPLLC, each Manager may be deemed to own beneficially all of the Record Shares. (b) Percent of Class: See Line 11 of cover sheets. The percentages set forth on the cover sheets are calculated based on 47,591,368 shares of Common Stock reported to be outstanding as of November 1, 2004 in the Issuer's most recently filed Quarterly Statement on Form 10-Q, as adjusted pursuant to Rule 13d-3(d)(1). (c) Number of shares as to which such person has: (i) sole power to vote or to direct the vote: See Line 5 of cover sheets. (ii) shared power to vote or to direct the vote: See Line 6 of cover sheets. (iii) sole power to vote or to direct the vote: See Line 7 of cover sheets. (iv) shared power to dispose or to direct the disposition of: See Line 8 of cover sheets. Each Reporting Person disclaims beneficial ownership of such shares of Common Stock except for the shares, if any, such Reporting Person holds of record. Item 5. Ownership of Five Percent or Less of a Class. --------------------------------------------- Not applicable. Item 6. Ownership of More than Five Percent on Behalf of Another Person. ---------------------------------------------------------------- Not applicable. Item 7. Identification and Classification of the Subsidiary Which Acquired ------------------------------------------------------------------ the Security Being Reported on by the Parent Holding Company. ------------------------------------------------------------- Not applicable. Item 8. Identification and Classification of Members of the Group. ---------------------------------------------------------- Not applicable. The Reporting Persons expressly disclaim membership in a "group" as used in Rule 13d-1(b)(ii)(J). Item 9. Notice of Dissolution of Group. ------------------------------- Not applicable. Item 10. Certification. ------------- Not applicable, this statement on Schedule 13G is not filed pursuant to Rule 13d-1(b) or Rule 13d-1(c). SIGNATURE --------- After reasonable inquiry and to the best of its knowledge and belief, each of the undersigned certifies that the information set forth in this statement is true, complete and correct. Date: February 11, 2005 NEW ENTERPRISE ASSOCIATES 9, LIMITED PARTNERSHIP By: NEA PARTNERS 9, LIMITED PARTNERSHIP By: * ----------------------------------- Charles W. Newhall III General Partner NEA PARTNERS 9, LIMITED PARTNERSHIP By: * ------------------------------------ Charles W. Newhall III General Partner NEW ENTERPRISE ASSOCIATES 10, LIMITED PARTNERSHIP By: NEA PARTNERS 10, LIMITED PARTNERSHIP By: * ----------------------------------- Charles W. Newhall III General Partner NEA PARTNERS 10, LIMITED PARTNERSHIP By: * ------------------------------------ Charles W. Newhall III General Partner NEW ENTERPRISE ASSOCIATES 11, LIMITED PARTNERSHIP By: NEA PARTNERS 11, LIMITED PARTNERSHIP By: * ----------------------------------- Charles W. Newhall III General Partner NEA PARTNERS 11, LIMITED PARTNERSHIP By: NEA 11 GP, LLC, its General Partner By: * ------------------------------------ Charles W. Newhall III Manager NEA 11 GP, LLC By: * ------------------------------------ Charles W. Newhall III Manager * ------------------------------ Peter J. Barris * ------------------------------ C. Richard Kramlich * ------------------------------ Peter T. Morris * ------------------------------ John M. Nehra * ------------------------------ Charles W. Newhall III * ------------------------------ Mark W. Perry *By: /s/ Louis S. Citron ----------------------------------- Louis S. Citron as Attorney-in-Fact -------------------------------------------------------------------------------- This Schedule 13G was executed by Louis S. Citron pursuant to Powers of Attorney which were filed with the Securities and Exchange Commission with the Schedule 13G filing for Myogen, Inc., as of December 31, 2003, which Powers of Attorney are incorporated herein by reference and copies of which are attached hereto as Exhibit 2. Exhibit 1 --------- AGREEMENT Pursuant to Rule 13d-1(k)(1) under the Securities Exchange Act of 1934, the undersigned hereby agree that only one statement containing the information required by Schedule 13G need be filed with respect to the ownership by each of the undersigned of shares of Common Stock of Atheros Communications, Inc. EXECUTED as a sealed instrument this 11th day of February, 2005. NEW ENTERPRISE ASSOCIATES 9, LIMITED PARTNERSHIP By: NEA PARTNERS 9, LIMITED PARTNERSHIP By: * ----------------------------------- Charles W. Newhall III General Partner NEA PARTNERS 9, LIMITED PARTNERSHIP By: * ------------------------------------ Charles W. Newhall III General Partner NEW ENTERPRISE ASSOCIATES 10, LIMITED PARTNERSHIP By: NEA PARTNERS 10, LIMITED PARTNERSHIP By: * ----------------------------------- Charles W. Newhall III General Partner NEA PARTNERS 10, LIMITED PARTNERSHIP By: * ------------------------------------ Charles W. Newhall III General Partner NEW ENTERPRISE ASSOCIATES 11, LIMITED PARTNERSHIP By: NEA PARTNERS 11, LIMITED PARTNERSHIP By: * ----------------------------------- Charles W. Newhall III General Partner NEA PARTNERS 11, LIMITED PARTNERSHIP By: NEA 11 GP, LLC, its General Partner By: * ------------------------------------ Charles W. Newhall III Manager NEA 11 GP, LLC By: * ------------------------------------ Charles W. Newhall III Manager * ------------------------------ Peter J. Barris * ------------------------------ C. Richard Kramlich * ------------------------------ Peter T. Morris * ------------------------------ John M. Nehra * ------------------------------ Charles W. Newhall III * ------------------------------ Mark W. Perry *By: /s/ Louis S. Citron ----------------------------------- Louis S. Citron as Attorney-in-Fact -------------------------------------------------------------------------------- This Schedule 13G was executed by Louis S. Citron pursuant to Powers of Attorney which were filed with the Securities and Exchange Commission with the Schedule 13G filing for Myogen, Inc., as of December 31, 2003 which Powers of Attorney are incorporated herein by reference and copies of which are attached hereto as Exhibit 2. Exhibit 2 --------- POWER OF ATTORNEY KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears below hereby constitutes and appoints Nancy L. Dorman, Charles W. Newhall III, Louis S. Citron and Eugene A. Trainor III, and each of them, with full power to act without the others, his true and lawful attorney-in-fact, with full power of substitution, to sign any and all instruments, certificates and documents that may be necessary, desirable or appropriate to be executed on behalf of himself as an individual or in his capacity as a general partner of any partnership, pursuant to section 13 or 16 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), and any and all regulations promulgated thereunder, and to file the same, with all exhibits thereto, and any other documents in connection therewith, with the Securities and Exchange Commission, and with any other entity when and if such is mandated by the Exchange Act or by the By-laws of the National Association of Securities Dealers, Inc., granting unto said attorney-in-fact full power and authority to do and perform each and every act and thing necessary, desirable or appropriate, fully to all intents and purposes as he might or could do in person, thereby ratifying and confirming all that said attorney-in-fact, or his substitutes, may lawfully do or cause to be done by virtue hereof. IN WITNESS WHEREOF, this Power of Attorney has been signed as of the 1st day of January, 2001. /s/ Stewart Alsop II ------------------------------------ Stewart Alsop II /s/ Peter J. Barris ------------------------------------ Peter J. Barris /s/ Robert T. Coneybeer ------------------------------------ Robert T. Coneybeer /s/ Nancy L. Dorman ------------------------------------ Nancy L. Dorman /s/ Ronald Kase ------------------------------------ Ronald Kase /s/ C. Richard Kramlich ------------------------------------ C. Richard Kramlich /s/ Arthur J. Marks ------------------------------------ Arthur J. Marks /s/ Thomas C. McConnell ------------------------------------ Thomas C. McConnell /s/ Peter T. Morris ------------------------------------ Peter T. Morris /s/ John M. Nehra ------------------------------------ John M. Nehra /s/ Charles W. Newhall ------------------------------------ Charles W. Newhall III /s/ Mark W. Perry ------------------------------------ Mark W. Perry /s/ Scott D. Sandell ------------------------------------ Scott D. Sandell