DEXCOM INC — Director's Dealing 2020

Jul 14, 2020

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: DEXCOM INC (DXCM)
CIK: 0001093557
Period of Report: 2020-07-10

Reporting Person: ALTMAN STEVEN R (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2020-07-10	Common Stock	S	144	$433.7254	Disposed	46836	Indirect
2020-07-10	Common Stock	S	284	$434.9176	Disposed	46552	Indirect
2020-07-10	Common Stock	S	360	$435.8244	Disposed	46192	Indirect
2020-07-10	Common Stock	S	505	$437.3355	Disposed	45687	Indirect
2020-07-10	Common Stock	S	39	$437.94	Disposed	45648	Indirect
2020-07-10	Common Stock	S	332	$439.5514	Disposed	45316	Indirect
2020-07-10	Common Stock	S	236	$440.661	Disposed	45080	Indirect
2020-07-10	Common Stock	S	100	$442.62	Disposed	44980	Indirect

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	806	Direct

Footnotes

F1: On February 25, 2020, 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 $432.97 to $433.935. 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 $434.325 to $435.315. 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 $435.45 to $436.37. 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 $436.88 to $437.75. 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.

F7: This transaction was executed in multiple trades at prices ranging from $439.33 to $440.065. 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.

F8: This transaction was executed in multiple trades at prices ranging from $440.37 to $440.875. 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.