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Form SC 13G - Statement of Beneficial Ownership by Certain Investors:
SEC Accession No. 0000912938-05-000112
Filing Date
2005-02-01
Accepted
2005-02-01 14:43:43
Documents
1

Document Format Files

Seq Description Document Type Size
1 F5 f5.txt SC 13G 7146
  Complete submission text file 0000912938-05-000112.txt   8807
Mailing Address 500 BOYLSTON STREET 15TH FLOOR BOSTON MA 02116
Business Address 500 BOYLSTON ST 15TH FL BOSTON MA 02116 18006372929
MASSACHUSETTS FINANCIAL SERVICES CO /MA/ (Filed by) CIK: 0000912938 (see all company filings)

IRS No.: 000000000 | State of Incorp.: DE | Fiscal Year End: 1231
Type: SC 13G
SIC: 0000

Mailing Address 401 ELLIOT AVE WEST STE 500 SEATTLE WA 98119
Business Address 401 ELLIOT AVE WEST STE 500 SEATTLE WA 98119 2062725555
F5 NETWORKS INC (Subject) CIK: 0001048695 (see all company filings)

IRS No.: 911714307 | State of Incorp.: WA | Fiscal Year End: 0930
Type: SC 13G | Act: 34 | File No.: 005-56407 | Film No.: 05565386
SIC: 3576 Computer Communications Equipment