<SUBMISSION>
<ACCESSION-NUMBER>0000891020-04-000632
<TYPE>8-K
<PUBLIC-DOCUMENT-COUNT>1
<PERIOD>20041220
<ITEMS>8.01
<FILING-DATE>20041220
<DATE-OF-FILING-DATE-CHANGE>20041220
<FILER>
<COMPANY-DATA>
<CONFORMED-NAME>F5 NETWORKS INC
<CIK>0001048695
<ASSIGNED-SIC>3576
<IRS-NUMBER>911714307
<STATE-OF-INCORPORATION>WA
<FISCAL-YEAR-END>0930
</COMPANY-DATA>
<FILING-VALUES>
<FORM-TYPE>8-K
<ACT>34
<FILE-NUMBER>000-26041
<FILM-NUMBER>041214320
</FILING-VALUES>
<BUSINESS-ADDRESS>
<STREET1>401 ELLIOT AVE WEST
<STREET2>STE 500
<CITY>SEATTLE
<STATE>WA
<ZIP>98119
<PHONE>2062725555
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>401 ELLIOT AVE WEST
<STREET2>STE 500
<CITY>SEATTLE
<STATE>WA
<ZIP>98119
</MAIL-ADDRESS>
<FORMER-COMPANY>
<FORMER-CONFORMED-NAME>F5 LABS INC
<DATE-CHANGED>19990305
</FORMER-COMPANY>
</FILER>
<DOCUMENT>
<TYPE>8-K
<SEQUENCE>1
<FILENAME>v04173e8vk.htm
<DESCRIPTION>FORM 8-K
<TEXT>
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<P align="center" style="font-size: 14pt"><B>UNITED STATES<BR>
SECURITIES AND EXCHANGE COMMISSION</B>

<DIV align="center" style="font-size: 11pt"><B>WASHINGTON, D.C. 20549</B>
</DIV>

<P align="center" style="font-size: 18pt"><B>FORM 8-K</B>


<P align="center" style="font-size: 11pt">CURRENT REPORT



<P align="center" style="font-size: 10pt">Pursuant to Section&nbsp;13 or 15(d) of the Securities Exchange Act of 1934



<P align="center" style="font-size: 10pt">Date of Report (Date of
Earliest Event Reported):<br>
December&nbsp;20, 2004


<P align="center" style="font-size: 12pt">&nbsp;

<P align="center" style="font-size: 24pt"><B>F5 Networks, Inc.</B>

<HR noshade width="32%" align="center" size="1">

<DIV align="center" style="font-size: 10pt">(Exact name of registrant as specified in its charter)
</DIV>

<P align="center" style="font-size: 12pt">&nbsp;


<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="80%">
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<TR valign="bottom">
    <TD width="25%">&nbsp;</TD>
    <TD width="10%">&nbsp;</TD>
    <TD width="25%">&nbsp;</TD>
    <TD width="10%">&nbsp;</TD>
    <TD width="25%">&nbsp;</TD>
</TR>
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<TR valign="bottom">
    <TD align="center" valign="top"><b>Washington</B><HR noshade align="center" size="1">
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top"><B>000-26041</B><HR noshade align="center" size="1">
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top"><B>91-1714307</B><HR noshade align="center" size="1">
</TD>
</TR>

<TR valign="bottom">
    <TD valign="top" align="center">(State or other jurisdiction<br>
of incorporation)
</TD>
    <TD>&nbsp;</TD>
<TD align="center" valign="top">(Commission<BR>
File Number)
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">(IRS Employer<br>
Identification No.)</TD>
</TR>

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</TABLE>
</DIV>



<P align="center" style="font-size: 10pt">401 Elliott Avenue West<BR>
Seattle, WA 98119

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<DIV align="center" style="font-size: 10pt">(Address of principal executive offices) (Zip Code)
</DIV>


<P align="center" style="font-size: 10pt">


<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="60%">
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<TR valign="bottom">
    <TD width="68%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="27%">&nbsp;</TD>
</TR>
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<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">Registrant&#146;s telephone number, including area code
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">(206) 272-5555</TD>
</TR>

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</TABLE>
</DIV>



<P align="center" style="font-size: 10pt">Not Applicable

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<DIV align="center" style="font-size: 10pt">Former name or former address, if changed since last report
</DIV>


<P align="center" style="font-size: 16pt">&nbsp;


<P align="left" style="font-size: 10pt">Check the appropriate box
below if the Form&nbsp;8-K filing is intended to simultaneously satisfy the
filing obligation of the registrant under any of the following provisions:


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<TABLE cellspacing="0" border="0" cellpadding="0" width="100%" style="font-size: 10pt">
<TR>
    <TD width="1%">&nbsp;</TD>
    <TD width="2%">&nbsp;</TD>
    <TD width="97%">&nbsp;</TD>
</TR>
<TR valign="top">
    <TD><FONT face="Wingdings">&#111;</FONT></TD>
    <TD>&nbsp;</TD>
    <TD>Written communications pursuant to Rule&nbsp;425 under the
Securities Act (17&nbsp;CFR&nbsp;230.425)</TD>
</TR>
</TABLE>
</DIV>

<DIV align="center">
<TABLE cellspacing="0" border="0" cellpadding="0" width="100%" style="font-size: 10pt">
<TR>
    <TD width="1%">&nbsp;</TD>
    <TD width="2%">&nbsp;</TD>
    <TD width="97%">&nbsp;</TD>
</TR>
<TR valign="top">
    <TD><FONT face="Wingdings">&#111;</FONT></TD>
    <TD>&nbsp;</TD>
    <TD>Soliciting material pursuant to Rule&nbsp;14a-12 under the
Exchange Act (17&nbsp;CFR&nbsp;240.14a-12)</TD>
</TR>
</TABLE>
</DIV>

<DIV align="center">
<TABLE cellspacing="0" border="0" cellpadding="0" width="100%" style="font-size: 10pt">
<TR>
    <TD width="1%">&nbsp;</TD>
    <TD width="2%">&nbsp;</TD>
    <TD width="97%">&nbsp;</TD>
</TR>
<TR valign="top">
    <TD><FONT face="Wingdings">&#111;</FONT></TD>
    <TD>&nbsp;</TD>
    <TD>Pre-commencement communications pursuant to
Rule&nbsp;14d-2(b) under the Exchange Act (17&nbsp;CFR&nbsp;240.14d-2(b))</TD>
</TR>
</TABLE>
</DIV>

<DIV align="center">
<TABLE cellspacing="0" border="0" cellpadding="0" width="100%" style="font-size: 10pt">
<TR>
    <TD width="1%">&nbsp;</TD>
    <TD width="2%">&nbsp;</TD>
    <TD width="97%">&nbsp;</TD>
</TR>
<TR valign="top">
    <TD><FONT face="Wingdings">&#111;</FONT></TD>
    <TD>&nbsp;</TD>
    <TD>Pre-commencement communications pursuant to
Rule&nbsp;13e-4(c) under the Exchange Act (17&nbsp;CFR&nbsp;240.13e-4(c))</TD>
</TR>
</TABLE>
</DIV>


<P>
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<P align="center" style="font-size: 10pt">&nbsp;
</DIV>

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<P align="left" style="font-size: 10pt"><B>Item&nbsp;8.01 Other Events</B>


<P align="left" style="font-size: 10pt">The annual shareholders meeting of F5 Networks, Inc. (the &#147;Company&#148;) for the fiscal year ended
September&nbsp;30, 2004 (the &#147;2004 Fiscal Year End Meeting&#148;) has been scheduled for February&nbsp;24, 2005.
Only shareholders of record at the close of business on December&nbsp;17, 2004 are entitled to notice
of, and to vote at, the 2004 Fiscal Year End Meeting.


<P align="left" style="font-size: 10pt">Shareholders who intend to have a proposal considered for inclusion in the Company&#146;s proxy
statement for the 2004 Fiscal Year End Meeting must provide the Company with a written notice
including the following information as to each matter the shareholder proposes to bring before the
annual meeting: (A)&nbsp;a brief description of the business desired to be brought before the annual
meeting and the reasons for conducting such business at the annual meeting, (B)&nbsp;the name and
address, as they appear on the Company&#146;s books, of the shareholder proposing such business, (C)&nbsp;the
class and number of shares of the Company which are beneficially owned by the shareholder, (D)&nbsp;any
material interest of the shareholder in such business and (E)&nbsp;any other information that is
required to be provided by the shareholder pursuant to Regulation&nbsp;14A under the Securities Exchange
Act of 1934, as amended, in such shareholder&#146;s capacity as a proponent of a shareholder proposal.


<P align="left" style="font-size: 10pt">Any such notice should be addressed to the General Counsel and Secretary of the Company at its
principal executive offices. Any such notice must be received by the
Company no later than January&nbsp;3, 2005. With respect to any proposal described in a notice received by the Company after such
date, such proposal will not be included in the Company&#146;s proxy statement and management of the
Company will have discretionary voting authority at the 2004 Fiscal Year End Meeting with respect
to any such proposal.


<P align="left" style="font-size: 10pt">The Company reserves the right to reject, rule out of order, or take appropriate action with
respect to any proposal that does not comply with these and other applicable requirements. A copy
of the full text of the provisions of the Company&#146;s Bylaws dealing with shareholder nominations and
proposals is available to shareholders from the Secretary of the Company upon written request.

<P align="center" style="font-size: 30pt">&nbsp;

<P align="center" style="font-size: 10pt"><B>SIGNATURES</B>


<P align="left" style="font-size: 10pt">Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused
this report to be signed on its behalf by the undersigned hereunto duly authorized.


<DIV align="center">
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    <TD width="2%">&nbsp;</TD>
</TR>
<TR style="font-size: 10pt" valign="bottom">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap colspan="2" align="left">F5 NETWORKS, INC.</TD>
    <TD>&nbsp;</TD>
</TR>
<TR style="font-size: 10pt" valign="bottom">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD colspan="2" align="left">(Registrant)</TD>
    <TD>&nbsp;</TD>
</TR>


<TR style="font-size: 20pt" valign="bottom">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>


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<TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">Date:&nbsp;&nbsp;&nbsp;&nbsp;December&nbsp;20, 2004
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top"><I>By:</I>
</TD>
    <TD align="left" valign="top"><I>/s/&nbsp;&nbsp;&nbsp;Joann Reiter</I></TD>
    <TD>&nbsp;</TD>
</TR>

<TR style="font-size: 1px">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD align="left" valign="top"><HR size="1" noshade>&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD align="left" valign="top">Joann Reiter
Vice President, General Counsel and Secretary</TD>
    <TD>&nbsp;</TD>

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</DIV>




<P align="center" style="font-size: 10pt">&nbsp;
</DIV>


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</SUBMISSION>
