0000912938-05-000112.txt : 20120703 0000912938-05-000112.hdr.sgml : 20120703 20050201144343 ACCESSION NUMBER: 0000912938-05-000112 CONFORMED SUBMISSION TYPE: SC 13G PUBLIC DOCUMENT COUNT: 1 FILED AS OF DATE: 20050201 DATE AS OF CHANGE: 20050201 SUBJECT COMPANY: COMPANY DATA: COMPANY CONFORMED NAME: F5 NETWORKS INC CENTRAL INDEX KEY: 0001048695 STANDARD INDUSTRIAL CLASSIFICATION: COMPUTER COMMUNICATIONS EQUIPMENT [3576] IRS NUMBER: 911714307 STATE OF INCORPORATION: WA FISCAL YEAR END: 0930 FILING VALUES: FORM TYPE: SC 13G SEC ACT: 1934 Act SEC FILE NUMBER: 005-56407 FILM NUMBER: 05565386 BUSINESS ADDRESS: STREET 1: 401 ELLIOT AVE WEST STREET 2: STE 500 CITY: SEATTLE STATE: WA ZIP: 98119 BUSINESS PHONE: 2062725555 MAIL ADDRESS: STREET 1: 401 ELLIOT AVE WEST STREET 2: STE 500 CITY: SEATTLE STATE: WA ZIP: 98119 FORMER COMPANY: FORMER CONFORMED NAME: F5 LABS INC DATE OF NAME CHANGE: 19990305 FILED BY: COMPANY DATA: COMPANY CONFORMED NAME: MASSACHUSETTS FINANCIAL SERVICES CO /MA/ CENTRAL INDEX KEY: 0000912938 STANDARD INDUSTRIAL CLASSIFICATION: UNKNOWN SIC - 0000 [0000] IRS NUMBER: 000000000 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: SC 13G BUSINESS ADDRESS: STREET 1: 500 BOYLSTON ST STREET 2: 15TH FL CITY: BOSTON STATE: MA ZIP: 02116 BUSINESS PHONE: 18006372929 MAIL ADDRESS: STREET 1: 500 BOYLSTON STREET STREET 2: 15TH FLOOR CITY: BOSTON STATE: MA ZIP: 02116 SC 13G 1 f5.txt F5 SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 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)* F5 Newtorks, Inc. -------------------------------------------------------------------------------- (Name of Issuer) Common Stock, .01 -------------------------------------------------------------------------------- (Title of Class of Securities) 31561610A -------------------------------------------------------------------------------- (CUSIP Number) 12/31/04 -------------------------------------------------------------------------------- (Date of Event which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this schedule is filed: /X/ Rule 13d-i(b) / / Rule 13d-i(c) / / Rule 13d-i(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. (Continued on following page(s)) Page 1 of 4 Pages CUSIP NO. 31561610A 13G PAGE 2 OF 4 PAGES -------------------------------------------------------------------------------- 1 NAME OF REPORTING PERSON I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY) Massachusetts Financial Services Company ("MFS") I.R.S. Identification No.: 04-2747644 -------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) / / (b) / / -------------------------------------------------------------------------------- 3 SEC USE ONLY -------------------------------------------------------------------------------- 4 CITIZENSHIP OR PLACE OF ORGANIZATION Delaware -------------------------------------------------------------------------------- NUMBER OF 5 SOLE VOTING POWER SHARES 548,350 Shares of Common Stock BENEFICIALLY -------------------------------------------------------------------------------- OWNED BY 6 SHARED VOTING POWER EACH -------------------------------------------------------------------------------- REPORTING 7 SOLE DISPOSITIVE POWER PERSON 580,170 Shares of Common Stock WITH -------------------------------------------------------------------------------- 8 SHARED DISPOSITIVE POWER -------------------------------------------------------------------------------- 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 580,170 shares of common stock of which shares are also beneficially owned by certain other non-reporting entities as well as MFS. -------------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* / / -------------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 1.61% -------------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON* IA -------------------------------------------------------------------------------- *SEE INSTRUCTION BEFORE FILLING OUT! SCHEDULE 13G PAGE 3 OF 4 PAGES ITEM 1: (a) NAME OF ISSUER: SEE COVER PAGE (b) ADDRESS OF ISSUER'S PRINCIPAL EXECUTIVE OFFICES: 401 Elliott Avenue West, Suite 500 Seattle, WA 98119 ITEM 2: (a) NAME OF PERSON FILING: see item 1 on page 1 (b) ADDRESS OF PRINCIPAL BUSINESS OFFICE OR, IF NONE, RESIDENCE: 500 Boylston Street Boston, MA 02116 (c) CITIZENSHIP: See Item 4 on page 2 (d) TITLE OF CLASS OF SECURITIES: SEE COVER PAGE (e) CUSIP NUMBER: SEE COVER PAGE ITEM 3: See Item 12 on page 2 ITEM 4: (a) AMOUNT BENEFICIALLY OWNED: See Item 9 on page 2 (b) PERCENT OF CLASS: See Item 11 on page 2 (c) NUMBER OF SHARES AS TO WHICH SUCH PERSON HAS VOTING AND DISPOSITIVE POWERS: See Items 5 and 7 on page 2 SCHEDULE 13G PAGE 4 OF 4 PAGES ITEM 5: OWNERSHIP OF FIVE PERCENT OR LESS OF A CLASS: /X/ ITEM 6: OWNERSHIP OF MORE THAN FIVE PERCENT ON BEHALF OF ANOTHER PERSON: Inapplicable ITEM 7: IDENTIFICATION AND CLASSIFICATION OF THE SUBSIDIARY WHICH ACQUIRED THE SECURITY BEING REPORTED ON BY THE PARENT HOLDING COMPANY: Inapplicable ITEM 8: IDENTIFICATION AND CLASSIFICATION OF MEMBERS OF THE GROUP: Inapplicable ITEM 9: NOTICE OF DISSOLUTION OF GROUP: Inapplicable ITEM 10: CERTIFICATION: By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of and do not have the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having such purpose or effect. 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. Date: February 1, 2005 Massachusetts Financial Services Company By: /s/ Mitchell C. Freestone Mitchell C. Freestone Vice President and Senior Counsel