SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 --------- SCHEDULE 13G (RULE 13d-102) INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO RULES 13d-1(b) (c), AND (d) AND AMENDMENTS THERETO FILED PURSUANT TO RULE 13d-2(b) (AMENDMENT NO.____)(1) Wireless Facilities, Inc. - -------------------------------------------------------------------------------- (Name of Issuer) Common Stock Par Value $0.001 - -------------------------------------------------------------------------------- (Title of Class of Securities) 33385515 - -------------------------------------------------------------------------------- (CUSIP Number) - -------------------------------------------------------------------------------- (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) - -------------- (1) 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. 33385515 13G Page 2 of 19 pages - -------------------------------------------------------------------------------- 1. Names of Reporting Persons I.R.S. Identification Nos. of Above Persons (entities only.) Oak Investment Partners X, Limited Partnership 06-1601019 - -------------------------------------------------------------------------------- 2. Check the Appropriate Box if a Member of a Group * (a) |_| (b) |X| - -------------------------------------------------------------------------------- 3. SEC Use Only - -------------------------------------------------------------------------------- 4. Citizenship or Place of Organization Delaware - -------------------------------------------------------------------------------- NUMBER OF 5. SOLE VOTING POWER SHARES 6,263,200 Shares of Common Stock ----------------------------------------------------------------- BENEFICIALLY 6. SHARED VOTING POWER OWNED BY Not applicable ----------------------------------------------------------------- EACH 7. SOLE DISPOSITIVE POWER REPORTING 6,263,200 Shares of Common Stock ----------------------------------------------------------------- PERSON 8. SHARED DISPOSITIVE POWER WITH Not applicable - -------------------------------------------------------------------------------- 9. Aggregate Amount Beneficially Owned by Each Reporting Person 6,263,200 Shares of Common Stock - -------------------------------------------------------------------------------- 10. Check if the Aggregate Amount in Row (9) Excludes Certain Shares * |_| - -------------------------------------------------------------------------------- 11. Percent of Class Represented by Amount in Row 9 12.17% - -------------------------------------------------------------------------------- 12. Type of Reporting Person * PN - -------------------------------------------------------------------------------- * SEE INSTRUCTIONS BEFORE FILLING OUT! Cusip No. 33385515 13G Page 3 of 19 pages - -------------------------------------------------------------------------------- 1. Names of Reporting Persons I.R.S. Identification Nos. of Above Persons (entities only.) Oak Associates X, LLC 06-1630661 - -------------------------------------------------------------------------------- 2. Check the Appropriate Box if a Member of a Group * (a) |_| (b) |X| - -------------------------------------------------------------------------------- 3. SEC Use Only - -------------------------------------------------------------------------------- 4. Citizenship or Place of Organization Delaware - -------------------------------------------------------------------------------- NUMBER OF 5. SOLE VOTING POWER SHARES Not applicable ----------------------------------------------------------------- BENEFICIALLY 6. SHARED VOTING POWER OWNED BY 6,263,200 Shares of Common Stock ----------------------------------------------------------------- EACH 7. SOLE DISPOSITIVE POWER REPORTING Not applicable ----------------------------------------------------------------- PERSON 8. SHARED DISPOSITIVE POWER WITH 6,263,200 Shares of Common Stock - -------------------------------------------------------------------------------- 9. Aggregate Amount Beneficially Owned by Each Reporting Person 6,263,200 Shares of Common Stock - -------------------------------------------------------------------------------- 10. Check if the Aggregate Amount in Row (9) Excludes Certain Shares * |_| - -------------------------------------------------------------------------------- 11. Percent of Class Represented by Amount in Row 9 12.17% - -------------------------------------------------------------------------------- 12. Type of Reporting Person * OO-LLC - -------------------------------------------------------------------------------- * SEE INSTRUCTIONS BEFORE FILLING OUT! Cusip No. 33385515 13G Page 4 of 19 pages - -------------------------------------------------------------------------------- 1. Names of Reporting Persons I.R.S. Identification Nos. of Above Persons (entities only.) Oak X Affiliates Fund, Limited Partnership 06-122220 - -------------------------------------------------------------------------------- 2. Check the Appropriate Box if a Member of a Group * (a) |_| (b) |X| - -------------------------------------------------------------------------------- 3. SEC Use Only - -------------------------------------------------------------------------------- 4. Citizenship or Place of Organization Delaware - -------------------------------------------------------------------------------- NUMBER OF 5. SOLE VOTING POWER SHARES 100,500 Shares of Common Stock ----------------------------------------------------------------- BENEFICIALLY 6. SHARED VOTING POWER OWNED BY Not applicable ----------------------------------------------------------------- EACH 7. SOLE DISPOSITIVE POWER REPORTING 100,500 Shares of Common Stock ----------------------------------------------------------------- PERSON 8. SHARED DISPOSITIVE POWER WITH Not applicable - -------------------------------------------------------------------------------- 9. Aggregate Amount Beneficially Owned by Each Reporting Person 100,500 Shares of Common Stock - -------------------------------------------------------------------------------- 10. Check if the Aggregate Amount in Row (9) Excludes Certain Shares * |_| - -------------------------------------------------------------------------------- 11. Percent of Class Represented by Amount in Row 9 0.22% - -------------------------------------------------------------------------------- 12. Type of Reporting Person * PN - -------------------------------------------------------------------------------- * SEE INSTRUCTIONS BEFORE FILLING OUT! Cusip No. 33385515 13G Page 5 of 19 pages - -------------------------------------------------------------------------------- 1. Names of Reporting Persons I.R.S. Identification Nos. of Above Persons (entities only.) Oak X Affiliates, LLC 06-1630662 - -------------------------------------------------------------------------------- 2. Check the Appropriate Box if a Member of a Group * (a) |_| (b) |X| - -------------------------------------------------------------------------------- 3. SEC Use Only - -------------------------------------------------------------------------------- 4. Citizenship or Place of Organization Delaware - -------------------------------------------------------------------------------- NUMBER OF 5. SOLE VOTING POWER SHARES Not applicable ----------------------------------------------------------------- BENEFICIALLY 6. SHARED VOTING POWER OWNED BY 100,500 Shares of Common Stock ----------------------------------------------------------------- EACH 7. SOLE DISPOSITIVE POWER REPORTING Not applicable ----------------------------------------------------------------- PERSON 8. SHARED DISPOSITIVE POWER WITH 100,500 Shares of Common Stock - -------------------------------------------------------------------------------- 9. Aggregate Amount Beneficially Owned by Each Reporting Person 100,500 Shares of Common Stock - -------------------------------------------------------------------------------- 10. Check if the Aggregate Amount in Row (9) Excludes Certain Shares * |_| - -------------------------------------------------------------------------------- 11. Percent of Class Represented by Amount in Row 9 0.22% - -------------------------------------------------------------------------------- 12. Type of Reporting Person * OO-LLC - -------------------------------------------------------------------------------- * SEE INSTRUCTIONS BEFORE FILLING OUT! Cusip No. 33385515 13G Page 6 of 19 pages - -------------------------------------------------------------------------------- 1. Names of Reporting Persons I.R.S. Identification Nos. of Above Persons (entities only.) Oak Management Corporation 06-0990851 - -------------------------------------------------------------------------------- 2. Check the Appropriate Box if a Member of a Group * (a) |_| (b) |X| - -------------------------------------------------------------------------------- 3. SEC Use Only - -------------------------------------------------------------------------------- 4. Citizenship or Place of Organization Delaware - -------------------------------------------------------------------------------- NUMBER OF 5. SOLE VOTING POWER SHARES Not applicable ----------------------------------------------------------------- BENEFICIALLY 6. SHARED VOTING POWER OWNED BY 6,363,700 Shares of Common Stock ----------------------------------------------------------------- EACH 7. SOLE DISPOSITIVE POWER REPORTING Not applicable ----------------------------------------------------------------- PERSON 8. SHARED DISPOSITIVE POWER WITH 6,363,700 Shares of Common Stock - -------------------------------------------------------------------------------- 9. Aggregate Amount Beneficially Owned by Each Reporting Person 6,363,700 Shares of Common Stock - -------------------------------------------------------------------------------- 10. Check if the Aggregate Amount in Row (9) Excludes Certain Shares * |_| - -------------------------------------------------------------------------------- 11. Percent of Class Represented by Amount in Row 9 12.34% - -------------------------------------------------------------------------------- 12. Type of Reporting Person * CO - -------------------------------------------------------------------------------- * SEE INSTRUCTIONS BEFORE FILLING OUT! Cusip No. 33385515 13G Page 7 of 19 pages - -------------------------------------------------------------------------------- 1. Names of Reporting Persons I.R.S. Identification Nos. of Above Persons (entities only.) Bandel L. Carano - -------------------------------------------------------------------------------- 2. Check the Appropriate Box if a Member of a Group * (a) |_| (b) |X| - -------------------------------------------------------------------------------- 3. SEC Use Only - -------------------------------------------------------------------------------- 4. Citizenship or Place of Organization United States - -------------------------------------------------------------------------------- NUMBER OF 5. SOLE VOTING POWER SHARES 5,582 Shares of Common Stock ----------------------------------------------------------------- BENEFICIALLY 6. SHARED VOTING POWER OWNED BY 6,363,700 Shares of Common Stock ----------------------------------------------------------------- EACH 7. SOLE DISPOSITIVE POWER REPORTING 5,582 Shares of Common Stock ----------------------------------------------------------------- PERSON 8. SHARED DISPOSITIVE POWER WITH 6,363,700 Shares of Common Stock - -------------------------------------------------------------------------------- 9. Aggregate Amount Beneficially Owned by Each Reporting Person 6,369,282 Shares of Common Stock - -------------------------------------------------------------------------------- 10. Check if the Aggregate Amount in Row (9) Excludes Certain Shares * |_| - -------------------------------------------------------------------------------- 11. Percent of Class Represented by Amount in Row 9 12.35% - -------------------------------------------------------------------------------- 12. Type of Reporting Person * IN - -------------------------------------------------------------------------------- * SEE INSTRUCTIONS BEFORE FILLING OUT! Cusip No. 33385515 13G Page 8 of 19 pages - -------------------------------------------------------------------------------- 1. Names of Reporting Persons I.R.S. Identification Nos. of Above Persons (entities only.) Edward F. Glassmeyer - -------------------------------------------------------------------------------- 2. Check the Appropriate Box if a Member of a Group * (a) |_| (b) |X| - -------------------------------------------------------------------------------- 3. SEC Use Only - -------------------------------------------------------------------------------- 4. Citizenship or Place of Organization United States - -------------------------------------------------------------------------------- NUMBER OF 5. SOLE VOTING POWER SHARES Not applicable ----------------------------------------------------------------- BENEFICIALLY 6. SHARED VOTING POWER OWNED BY 6,363,700 Shares of Common Stock ----------------------------------------------------------------- EACH 7. SOLE DISPOSITIVE POWER REPORTING Not applicable ----------------------------------------------------------------- PERSON 8. SHARED DISPOSITIVE POWER WITH 6,363,700 Shares of Common Stock - -------------------------------------------------------------------------------- 9. Aggregate Amount Beneficially Owned by Each Reporting Person 6,363,700 Shares of Common Stock - -------------------------------------------------------------------------------- 10. Check if the Aggregate Amount in Row (9) Excludes Certain Shares * |_| - -------------------------------------------------------------------------------- 11. Percent of Class Represented by Amount in Row 9 12.34% - -------------------------------------------------------------------------------- 12. Type of Reporting Person * IN - -------------------------------------------------------------------------------- * SEE INSTRUCTIONS BEFORE FILLING OUT! Cusip No. 33385515 13G Page 9 of 19 pages - -------------------------------------------------------------------------------- 1. Names of Reporting Persons I.R.S. Identification Nos. of Above Persons (entities only.) Fredric W. Harman - -------------------------------------------------------------------------------- 2. Check the Appropriate Box if a Member of a Group * (a) |_| (b) |X| - -------------------------------------------------------------------------------- 3. SEC Use Only - -------------------------------------------------------------------------------- 4. Citizenship or Place of Organization United States - -------------------------------------------------------------------------------- NUMBER OF 5. SOLE VOTING POWER SHARES Not applicable ----------------------------------------------------------------- BENEFICIALLY 6. SHARED VOTING POWER OWNED BY 6,363,700 Shares of Common Stock ----------------------------------------------------------------- EACH 7. SOLE DISPOSITIVE POWER REPORTING Not applicable ----------------------------------------------------------------- PERSON 8. SHARED DISPOSITIVE POWER WITH 6,363,700 Shares of Common Stock - -------------------------------------------------------------------------------- 9. Aggregate Amount Beneficially Owned by Each Reporting Person 6,363,700 Shares of Common Stock - -------------------------------------------------------------------------------- 10. Check if the Aggregate Amount in Row (9) Excludes Certain Shares * |_| - -------------------------------------------------------------------------------- 11. Percent of Class Represented by Amount in Row 9 12.34% - -------------------------------------------------------------------------------- 12. Type of Reporting Person * IN - -------------------------------------------------------------------------------- * SEE INSTRUCTIONS BEFORE FILLING OUT! Cusip No. 33385515 13G Page 10 of 19 pages - -------------------------------------------------------------------------------- 1. Names of Reporting Persons I.R.S. Identification Nos. of Above Persons (entities only.) Ann H. Lamont - -------------------------------------------------------------------------------- 2. Check the Appropriate Box if a Member of a Group * (a) |_| (b) |X| - -------------------------------------------------------------------------------- 3. SEC Use Only - -------------------------------------------------------------------------------- 4. Citizenship or Place of Organization United States - -------------------------------------------------------------------------------- NUMBER OF 5. SOLE VOTING POWER SHARES Not applicable ----------------------------------------------------------------- BENEFICIALLY 6. SHARED VOTING POWER OWNED BY 6,363,700 Shares of Common Stock ----------------------------------------------------------------- EACH 7. SOLE DISPOSITIVE POWER REPORTING Not applicable ----------------------------------------------------------------- PERSON 8. SHARED DISPOSITIVE POWER WITH 6,363,700 Shares of Common Stock - -------------------------------------------------------------------------------- 9. Aggregate Amount Beneficially Owned by Each Reporting Person 6,363,700 Shares of Common Stock - -------------------------------------------------------------------------------- 10. Check if the Aggregate Amount in Row (9) Excludes Certain Shares * |_| - -------------------------------------------------------------------------------- 11. Percent of Class Represented by Amount in Row 9 12.34% - -------------------------------------------------------------------------------- 12. Type of Reporting Person * IN - -------------------------------------------------------------------------------- * SEE INSTRUCTIONS BEFORE FILLING OUT! Cusip No. 33385515 13G Page 11 of 19 pages - -------------------------------------------------------------------------------- 1. Names of Reporting Persons I.R.S. Identification Nos. of Above Persons (entities only.) David B. Walrod - -------------------------------------------------------------------------------- 2. Check the Appropriate Box if a Member of a Group * (a) |_| (b) |X| - -------------------------------------------------------------------------------- 3. SEC Use Only - -------------------------------------------------------------------------------- 4. Citizenship or Place of Organization United States - -------------------------------------------------------------------------------- NUMBER OF 5. SOLE VOTING POWER SHARES Not applicable ----------------------------------------------------------------- BENEFICIALLY 6. SHARED VOTING POWER OWNED BY 6,363,700 Shares of Common Stock ----------------------------------------------------------------- EACH 7. SOLE DISPOSITIVE POWER REPORTING Not applicable ----------------------------------------------------------------- PERSON 8. SHARED DISPOSITIVE POWER WITH 6,363,700 Shares of Common Stock - -------------------------------------------------------------------------------- 9. Aggregate Amount Beneficially Owned by Each Reporting Person 6,363,700 Shares of Common Stock - -------------------------------------------------------------------------------- 10. Check if the Aggregate Amount in Row (9) Excludes Certain Shares * |_| - -------------------------------------------------------------------------------- 11. Percent of Class Represented by Amount in Row 9 12.34% - -------------------------------------------------------------------------------- 12. Type of Reporting Person * IN - -------------------------------------------------------------------------------- * SEE INSTRUCTIONS BEFORE FILLING OUT! Page 12 of 19 pages Schedule 13G Amendment No. __* Common Stock Par Value $0.001 CUSIP No. 33385515 ITEM 1(a) NAME OF ISSUER: Wireless Facilities, Inc. ITEM 1(b) ADDRESS OF ISSUER'S PRINCIPAL EXECUTIVE OFFICES: 9805 Scranton Road, Suite 100 San Diego, California 92121 ITEM 2(a) NAME OF PERSON FILING: Oak Investment Partners X, Limited Partnership Oak Associates X, LLC Oak X Affiliates Fund, Limited Partnership Oak X Affiliates, LLC Oak Management Corporation Bandel L. Carano Edward F. Glassmeyer Fredric W. Harman Ann H. Lamont David B. Walrod ITEM 2(b) ADDRESS OF PRINCIPAL BUSINESS OFFICE OR, IF NONE, RESIDENCE: c/o Oak Management Corporation One Gorham Island Westport, CT 06880 ITEM 2(c) CITIZENSHIP: Please refer to Item 4 on each cover sheet for each filing person ITEM 2(d) TITLE OF CLASS OF SECURITIES: Common stock, Par Value $0.001 ITEM 2(e) CUSIP NUMBER: 33385515 Page 13 of 19 pages ITEM 3 Not Applicable. ITEM 4 OWNERSHIP. The approximate percentages of shares of Common Stock reported as beneficially owned by the Reporting Entities is based upon 45,198,077 shares outstanding as of August 2, 2001, as reported in the Issuer's Quarterly Report on Form 10-Q for the fiscal quarter ended June 30, 2001, plus shares issuable upon conversion or exercise of options to acquire common stock as described in the following paragraph. On October 10, 2001, Oak Investment Partners X, Limited Partnership ("Oak Investment X"), and Oak X Affiliates Fund, Limited Partnership ("Oak Affiliates X"), entered into a Preferred Stock Purchase Agreement with the Issuer, pursuant to which Oak Investment X purchased 62,632 shares of Series A Preferred Stock, par value $0.001 per share, of the Issuer ("Series A Preferred Stock") for a purchase price of $34,447,600, and Oak Affiliates X purchased 1,005 shares of Series A Preferred Stock for a purchase price of $552,750. Each share of Series A Preferred Stock is initially convertible into 100 shares of common stock, subject to adjustment. Please see Items 5, 6, 7, 8, 9 and 11 for each cover sheet for each filing entity. ITEM 5 OWNERSHIP OF FIVE PERCENT OR LESS OF A CLASS. If this statement is being filed to report the fact that as of the date hereof the reporting person has ceased to be the beneficial owner of more than five percent of the class of securities, check the following: [ ] 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 ITEM 9 NOTICE OF DISSOLUTION OF GROUP. Not applicable ITEM 10 CERTIFICATIONS. Not applicable Page 14 of 19 pages After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct. SIGNATURE: Dated: November 9, 2001 Entities: Oak Investment Partners X, Limited Partnership Oak Associates X, LLC Oak X Affiliates Fund, Limited Partnership Oak X Affiliates, LLC Oak Management Corporation By: /s/ Edward F. Glassmeyer ----------------------------- Edward F. Glassmeyer, as General Partner or Managing Member or as Attorney-in-fact for the above-listed entities Individuals: Bandel L. Carano Edward F. Glassmeyer Fredric W. Harman Ann H. Lamont David B. Walrod By: /s/ Edward F. Glassmeyer ----------------------------- Edward F. Glassmeyer, Individually and as Attorney-in-fact for the above-listed individuals Page 15 of 19 pages INDEX TO EXHIBITS -----------------
PAGE EXHIBIT A Agreement of Reporting Persons 16 EXHIBIT B Power of Attorney 17
Page 16 of 19 pages EXHIBIT A AGREEMENT OF REPORTING PERSONS Each of the undersigned hereby agrees that the Schedule 13G filed on the date hereof with respect to the shares of Common Stock of Wireless Facilities, Inc. has been filed on behalf of the undersigned. SIGNATURE: Dated: November 9, 2001 Entities: Oak Investment Partners X, Limited Partnership Oak Associates X, LLC Oak X Affiliates Fund, Limited Partnership Oak X Affiliates, LLC Oak Management Corporation By: /s/ Edward F. Glassmeyer ----------------------------- Edward F. Glassmeyer, as General Partner or Managing Member or as Attorney-in-fact for the above-listed entities Individuals: Bandel L. Carano Edward F. Glassmeyer Fredric W. Harman Ann H. Lamont David B. Walrod By: /s/ Edward F. Glassmeyer ----------------------------- Edward F. Glassmeyer, Individually and as Attorney-in-fact for the above-listed individuals
Page 17 of 19 pages EXHIBIT B POWER OF ATTORNEY The undersigned hereby make, constitute and appoint each of EDWARD F. GLASSMEYER and ANN H. LAMONT, acting jointly or individually, with full power of substitution, the true and lawful attorney-in-fact for the undersigned, in the undersigned's name, place and stead and on the undersigned's behalf, to complete, execute and file with the United States Securities and Exchange Commission (the "Commission"), a statement on Schedule 13G with respect to the securities of WIRELESS FACILITIES, INC., a Delaware corporation, and any and all amendments thereto, pursuant to Section 13(d) of the Securities Exchange Act of 1934, as amended, and the rules and regulations promulgated thereunder, and any other forms, certificates, documents or instruments (including a Joint Filing Agreement) that the attorneys-in-fact (or either of them) deems necessary or appropriate in order to enable the undersigned to comply with the requirements of said Section 13(d) and said rules and regulations. This Power of Attorney shall remain in effect for a period of two years from the date hereof or until such earlier date as a written revocation thereof is filed with the Commission. Dated: November 9, 2001 Page 18 of 19 pages Oak Management Corporation By: /s/ Edward F. Glassmeyer ----------------------------- Name: Edward F. Glassmeyer Title: President Oak Investment Partners X, Limited Partnership By: Oak Associates X, LLC, its general partner By: /s/ Edward F. Glassmeyer ----------------------------- Name: Edward F. Glassmeyer Title: Managing Member Oak Associates X, LLC By: /s/ Edward F. Glassmeyer ----------------------------- Name: Edward F. Glassmeyer Title: Managing Member Oak X Affiliates Fund, Limited Partnership By: Oak X Affiliates, LLC By: /s/ Edward F. Glassmeyer ----------------------------- Name: Edward F. Glassmeyer Title: Managing Member Oak X Affiliates, LLC By: /s/ Edward F. Glassmeyer ----------------------------- Name: Edward F. Glassmeyer Title: Managing Member Page 19 of 19 pages /s/ Bandel L. Carano ------------------------------------------ Bandel L. Carano /s/ Edward F. Glassmeyer -------------------------------------- Edward F. Glassmeyer /s/ Fredric W. Harman ---------------------------------------- Fredric W. Harman /s/ Ann H. Lamont ------------------------------------------ Ann H. Lamont /s/ David B. Walrod ------------------------------------------ David B. Walrod