<SEC-DOCUMENT>0001628280-21-012169.txt : 20210614
<SEC-HEADER>0001628280-21-012169.hdr.sgml : 20210614
<ACCEPTANCE-DATETIME>20210614161039
ACCESSION NUMBER:		0001628280-21-012169
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20210610
FILED AS OF DATE:		20210614
DATE AS OF CHANGE:		20210614

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			ADAMS THOMAS PHD
		CENTRAL INDEX KEY:			0001234366

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-35558
		FILM NUMBER:		211014717

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Cardiff Oncology, Inc.
		CENTRAL INDEX KEY:			0001213037
		STANDARD INDUSTRIAL CLASSIFICATION:	BIOLOGICAL PRODUCTS (NO DIAGNOSTIC SUBSTANCES) [2836]
		IRS NUMBER:				272004382
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		11055 FLINTKOTE AVENUE
		CITY:			SAN DIEGO
		STATE:			CA
		ZIP:			92121
		BUSINESS PHONE:		858-952-7570

	MAIL ADDRESS:	
		STREET 1:		11055 FLINTKOTE AVENUE
		CITY:			SAN DIEGO
		STATE:			CA
		ZIP:			92121

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Trovagene, Inc.
		DATE OF NAME CHANGE:	20130304

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	TrovaGene Inc.
		DATE OF NAME CHANGE:	20110830

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	XENOMICS INC
		DATE OF NAME CHANGE:	20040719
</SEC-HEADER>
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    <footnotes>
        <footnote id="F1">Expiration date of the stock options was extended to June 10, 2023.</footnote>
        <footnote id="F2">7,338 of the stock options vest immediately.  4,077 of the stock options vest on each of 2/25/2015 and 2016 and 4,076 of the stock options vest on 2/25/2017.</footnote>
        <footnote id="F3">In connection with the Reporting Person's separation agreement dated December 21, 2020, the Compensation Committee accelerated the vesting of such stock options to December 29, 2020.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Thomas Adams</signatureName>
        <signatureDate>2021-06-14</signatureDate>
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