DEXCOM INC — Director's Dealing 2020

Jan 7, 2020

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: DEXCOM INC (DXCM)
CIK: 0001093557
Period of Report: 2020-01-02

Reporting Person: ALTMAN STEVEN R (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2020-01-02	Common Stock	S	644	$216.2316	Disposed	48160	Indirect
2020-01-02	Common Stock	S	327	$217.7651	Disposed	47833	Indirect
2020-01-02	Common Stock	S	737	$218.6059	Disposed	47096	Indirect
2020-01-02	Common Stock	S	792	$220.0246	Disposed	46304	Indirect

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	2676	Direct

Footnotes

F1: On August 6, 2018, Mr. Altman adopted a 10b5-1 Plan. This 10b5-1 Plan allows the orderly disposition of shares owned by Mr. Altman. The shares set forth above were sold pursuant to the 10b5-1 Plan.

F2: This transaction was executed in multiple trades at prices ranging from $216.13 to $216.32. 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.

F3: Shares are held by the Steven R. and Lisa J. Altman, TTEE's Altman Family Trust DTD 8/21/92, with respect to which the reporting person is a trustee.

F4: This transaction was executed in multiple trades at prices ranging from $217.29 to $218.16. 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.

F5: This transaction was executed in multiple trades at prices ranging from $218.46 to $219.28. 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.

F6: This transaction was executed in multiple trades at prices ranging from $219.75 to $220.70. 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.