<SEC-DOCUMENT>0001093557-22-000016.txt : 20220214
<SEC-HEADER>0001093557-22-000016.hdr.sgml : 20220214
<ACCEPTANCE-DATETIME>20220214170606
ACCESSION NUMBER:		0001093557-22-000016
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20220210
FILED AS OF DATE:		20220214
DATE AS OF CHANGE:		20220214

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			KAHN BARBARA
		CENTRAL INDEX KEY:			0001520391

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-51222
		FILM NUMBER:		22634417

	MAIL ADDRESS:	
		STREET 1:		C/O DEXCOM, INC.
		STREET 2:		6340 SEQUENCE DRIVE
		CITY:			SAN DIEGO
		STATE:			CA
		ZIP:			92121

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			DEXCOM INC
		CENTRAL INDEX KEY:			0001093557
		STANDARD INDUSTRIAL CLASSIFICATION:	SURGICAL & MEDICAL INSTRUMENTS & APPARATUS [3841]
		IRS NUMBER:				330857544
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		6340 SEQUENCE DRIVE
		CITY:			SAN DIEGO
		STATE:			CA
		ZIP:			92121
		BUSINESS PHONE:		8582000200

	MAIL ADDRESS:	
		STREET 1:		6340 SEQUENCE DRIVE
		CITY:			SAN DIEGO
		STATE:			CA
		ZIP:			92121
</SEC-HEADER>
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                    <footnoteId id="F1"/>
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                    <footnoteId id="F13"/>
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                <value>Common Stock</value>
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    <footnotes>
        <footnote id="F1">On November 12, 2021, Ms. Kahn adopted a 10b5-1 Plan.  This 10b5-1 Plan allows the orderly disposition of shares owned by Ms. Kahn.   The exercise and sale of shares set forth above were pursuant to the 10b5-1 Plan.</footnote>
        <footnote id="F2">Represents 918 restricted stock units which were granted on May 21, 2021 and will vest on the earlier of the one year anniversary of the grant date or the date of DexCom Inc's 2022 Annual Meeting.</footnote>
        <footnote id="F3">This transaction was executed in multiple trades at prices ranging from $440.65 to $441.04.  The price above reflects the weighted average sale price.  The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transactions were effected.</footnote>
        <footnote id="F4">his transaction was executed in multiple trades at prices ranging from $441.69 to $442.66. The price above reflects the weighted average sale price.  The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transactions were effected.</footnote>
        <footnote id="F5">This transaction was executed in multiple trades at prices ranging from $434.28 to $434.84.  The price above reflects the weighted average sale price.  The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transactions were effected.</footnote>
        <footnote id="F6">This transaction was executed in multiple trades at prices ranging from $442.93 to $443.89.  The price above reflects the weighted average sale price.  The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transactions were effected.</footnote>
        <footnote id="F7">This transaction was executed in multiple trades at prices ranging from $444.35 to $445.05.  The price above reflects the weighted average sale price.  The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transactions were effected.</footnote>
        <footnote id="F8">his transaction was executed in multiple trades at prices ranging from $445.54 to $446.15.  The price above reflects the weighted average sale price.  The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transactions were effected.</footnote>
        <footnote id="F9">This transaction was executed in multiple trades at prices ranging from $447.06 to $447.64.  The price above reflects the weighted average sale price.  The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transactions were effected.</footnote>
        <footnote id="F10">This transaction was executed in multiple trades at prices ranging from $448.53 to $449.47.  The price above reflects the weighted average sale price.  The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transactions were effected.</footnote>
        <footnote id="F11">This transaction was executed in multiple trades at prices ranging from $449.61 to $450.52.  The price above reflects the weighted average sale price.  The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transactions were effected.</footnote>
        <footnote id="F12">This transaction was executed in multiple trades at prices ranging from $450.96 to $451.61.  The price above reflects the weighted average sale price.  The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transactions were effected.</footnote>
        <footnote id="F13">This transaction was executed in multiple trades at prices ranging from $451.96 to $452.94.  The price above reflects the weighted average sale price.  The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transactions were effected.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>By: Jereme Sylvain For: Barbara E Kahn</signatureName>
        <signatureDate>2022-02-14</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
