--------                                       UNITED STATES SECURITIES AND EXCHANGE COMMISSION        -----------------------------
 FORM 3                                                WASHINGTON, D.C. 20549                                   OMB APPROVAL
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                                       INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES          OMB Number:       3235-0104
                                                                                                        Expires: December 31, 2001
                              Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934,   Estimated average burden
                                 Section 17(a) of the Public Utility Holding Company Act of 1935 or     hours per response .... 0.5
(Print or Type Responses)                Section 30(f) of the Investment Company Act of 1940           -----------------------------
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1. Name and Address of Reporting Person*         2. Date of Event Re-   4. Issuer Name AND Ticker or Trading Symbol
                                                    quiring Statement
   Davis           Kimberly             D.          (Month/Day/Year)       F5 NETWORKS. INC. (FFIV)
-------------------------------------------------                       ------------------------------------------------------------
    (Last)          (First)          (Middle)         June 3, 1999     5. Relationship of Reporting Person(s) 6. If Amendment, Date
                                                 -----------------------    to Issuer (Check all applicable)      of Original
                                                 3. IRS or Social Se-    X  Director           10% Owner         (Month/Day/Year)
   C/o F5 Networks, Inc.                            curity Number of    ----               ----
   200 First Avenue West                            Reporting Person        Officer (give      Other (specify  ---------------------
-------------------------------------------------   (Voluntary)              title below)       below)         7. Individual or
                    (Street)                                            ----               ----                   Joint/Group Filing
                                                                                                                  (Check Applicable
                                                                                                                   Line)
                                                                           ---------------------------            Form filed by One
                                                                                                                X Reporting Person
                                                                                                               ---
                                                                                                                  Form filed by
                                                                                                                  More than One
                                                                                                                  Reporting Person
   Seattle, Washington 98119                                                                                   ---
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    (City)          (State)            (Zip)                                TABLE I -- NON-DERIVATIVE SECURITIES BENEFICIALLY OWNED

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1. Title of Security                              2. Amount of Securities       3. Ownership        4. Nature of Indirect Beneficial
   (Instr. 4)                                        Beneficially Owned            Form: Direct        Ownership (Instr. 5)
                                                     (Instr. 4)                    (D) or Indirect
                                                                                   (I)
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Common Stock                                         589,024                       I                   (Note 1)
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Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.                 (Over)
* If the form is filed by more than one reporting person, SEE Instruction 5(b)(v).                                 SEC 1473 (3-99)

               POTENTIAL PERSONS WHO ARE TO RESPOND TO THE COLLECTION OF INFORMATION CONTAINED IN THIS FORM ARE NOT REQUIRED
               TO RESPOND UNLESS THE FORM DISPLAYS A CURRENTLY VALID OMB CONTROL NUMBER.


FORM 3 (CONTINUED)   TABLE II - DERIVATIVE SECURITIES BENEFICIALLY OWNED (E.G., PUTS, CALLS, WARRANTS, OPTIONS, CONVERTIBLE
                                SECURITIES)
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1. Title of Derivative Security    2. Date Exer-  3. Title and Amount of Securities   4. Conver-   5. Owner-   6. Nature of Indirect
   (Instr. 4)                         cisable and    Underlying Derivative Security      sion or      ship        Beneficial
                                      Expiration     (Instr. 4)                          Exercise     Form of     Ownership
                                      Date                                               Price of     Deriv-      (Instr. 5)
                                     (Month/Day/                                         Deri-        ative
                                      Year)                                              vative       Security:
                                   --------------------------------------------------    Security     Direct
                                                                             Amount                   (D) or
                                    Date     Expir-                          or                       Indirect
                                    Exer-    ation           Title           Number                   (I)
                                    cisable  Date                            of
                                                                             Shares                 (Instr. 5)
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Explanation of Responses:

Note 1:  All shares are owned directly by Pacific Technology Ventures U.S.A., L.P. Ms. Davis is a general partner of IDG Ventures,
L.L.C., which is general partner of Pacific Technology Ventures U.S.A., L.P., and may be deemed to share voting and dispositive
power with respect to the shares held directly by Pacific Technology Ventures U.S.A., L.P., and disclaims beneficial interest
except to the extent of any pecuniary interest therein.

                                                                       /s/ Kimberly D. Davis                     June 3, 1999
                                                                       -------------------------------------  ----------------------
**Intentional misstatements or omissions of facts constitute Federal   Kimberly D. Davis
  Criminal Violations.  SEE 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).         **Signature of Reporting Person             Date

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient,
      SEE Instruction 6 for procedure.
Potential persons who are to respond to the collection of information contained in this form are not
required to respond unless the form displays a currently valid OMB Number.                                                  Page 2
                                                                                                                   SEC 1473 (3-99)