<SEC-DOCUMENT>0001209191-21-049256.txt : 20210803
<SEC-HEADER>0001209191-21-049256.hdr.sgml : 20210803
<ACCEPTANCE-DATETIME>20210803155304
ACCESSION NUMBER:		0001209191-21-049256
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20210801
FILED AS OF DATE:		20210803
DATE AS OF CHANGE:		20210803

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Rogers Scot Frazier
		CENTRAL INDEX KEY:			0001588334

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-26041
		FILM NUMBER:		211139536

	MAIL ADDRESS:	
		STREET 1:		C/O F5 NETWORKS, INC.
		STREET 2:		401 ELLIOTT AVE. WEST
		CITY:			SEATTLE
		STATE:			WA
		ZIP:			98119

ISSUER:		

	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

	BUSINESS ADDRESS:	
		STREET 1:		801 5TH AVENUE
		CITY:			SEATTLE
		STATE:			WA
		ZIP:			98104
		BUSINESS PHONE:		2062725555

	MAIL ADDRESS:	
		STREET 1:		801 5TH AVENUE
		CITY:			SEATTLE
		STATE:			WA
		ZIP:			98104

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	F5 NETWORKS INC
		DATE OF NAME CHANGE:	19990308

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	F5 LABS INC
		DATE OF NAME CHANGE:	19990305
</SEC-HEADER>
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<SEQUENCE>1
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<DESCRIPTION>FORM 4 SUBMISSION
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    <footnotes>
        <footnote id="F1">Shares acquired upon vesting of the November 1, 2017, November 1, 2018, November 1, 2019 and November 2, 2020 awards of service-based Restricted Stock Units.</footnote>
        <footnote id="F2">This transaction was executed pursuant to a Rule 10b5-1 trading plan.</footnote>
        <footnote id="F3">Each Restricted Stock Unit represents a contingent right to receive one share of F5 Networks, Inc. Common Stock on the vest date.</footnote>
        <footnote id="F4">This November 1, 2017 award of service-based Restricted Stock Units vests in sixteen equal quarterly increments beginning February 1, 2018.</footnote>
        <footnote id="F5">If the reporting person continues to provide services to the Company through the vest date, the corresponding number of shares of Common Stock of F5 Networks, Inc. will be issued to the reporting person on the vest date.</footnote>
        <footnote id="F6">This November 2, 2020 award of service-based Restricted Stock Units vests in twelve equal quarterly increments beginning February 1, 2021.</footnote>
        <footnote id="F7">This November 1, 2018 award of service-based Restricted Stock Units vests in twelve equal quarterly increments beginning February 1, 2019.</footnote>
        <footnote id="F8">This November 1, 2019 award of service-based Restricted Stock Units vests in twelve equal quarterly increments beginning February 1, 2020.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Scot F. Rogers</signatureName>
        <signatureDate>2021-08-03</signatureDate>
    </ownerSignature>
</ownershipDocument>
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</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
