<SEC-DOCUMENT>0001209191-21-062675.txt : 20211103
<SEC-HEADER>0001209191-21-062675.hdr.sgml : 20211103
<ACCEPTANCE-DATETIME>20211103160834
ACCESSION NUMBER:		0001209191-21-062675
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20211101
FILED AS OF DATE:		20211103
DATE AS OF CHANGE:		20211103

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			FOUNTAIN THOMAS DEAN
		CENTRAL INDEX KEY:			0001728330

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-26041
		FILM NUMBER:		211375390

	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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<TYPE>4
<SEQUENCE>1
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<DESCRIPTION>FORM 4 SUBMISSION
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    <footnotes>
        <footnote id="F1">Shares acquired upon vesting of the February 1, 2018, November 1, 2018, November 1, 2019 and November 2, 2020 awards of service-based Restricted Stock Units.</footnote>
        <footnote id="F2">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="F3">This November 2, 2020 award of service-based Restricted Stock Units vests in twelve equal quarterly increments beginning February 1, 2021.</footnote>
        <footnote id="F4">If the reporting person continues to serve as an officer of the Company on 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="F5">This November 1, 2018 award of service-based Restricted Stock Units vests in twelve equal quarterly increments beginning February 1, 2019.</footnote>
        <footnote id="F6">This November 1, 2019 award of service-based Restricted Stock Units vests in twelve equal quarterly increments beginning February 1, 2020.</footnote>
        <footnote id="F7">Twenty five percent (25%) of this February 1, 2018 award of service-based Restricted Stock Units vests on February 1, 2019, and the remaining seventy five percent (75%) vests in twelve equal quarterly increments beginning May 1, 2019.</footnote>
        <footnote id="F8">Concurrent with the award of 8,135 service-based Restricted Stock Units, the Company granted the reporting person additional Restricted
Stock Units that vest based on performance targets (&quot;Performance RSUs&quot;). If the performance targets are achieved at 100%, the reporting person will receive 8,135 Performance RSUs over the vesting period; the actual number of Performance RSUs received may be more or less depending on whether and to the extent that performance is greater than or less than targets. The Performance RSUs vests over a three-year period in three equal annual installments. Performance RSUs are not reported in Table II; the underlying shares of Performance RSUs will be reported in Table I if and when the Compensation Committee of the Board of Directors determines that the performance targets have been achieved.</footnote>
        <footnote id="F9">This November 1, 2021 award of service-based Restricted Stock Units vests in twelve equal quarterly increments beginning February 1, 2022.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Scot F. Rogers by Power of Attorney</signatureName>
        <signatureDate>2021-11-03</signatureDate>
    </ownerSignature>
</ownershipDocument>
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</DOCUMENT>
</SEC-DOCUMENT>
