DEXCOM INC — Director's Dealing 2021

Jan 26, 2021

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: DEXCOM INC (DXCM)
CIK: 0001093557
Period of Report: 2021-01-22

Reporting Person: DOUBLEDAY RICHARD (EVP Chief Commercial Officer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2021-01-22	Common Stock	S	366	$367.5132	Disposed	9617	Indirect
2021-01-22	Common Stock	S	169	$368.2021	Disposed	9448	Indirect
2021-01-22	Common Stock	S	254	$369.3065	Disposed	9194	Indirect
2021-01-22	Common Stock	S	310	$370.2438	Disposed	8884	Indirect
2021-01-22	Common Stock	S	11	$371.9841	Disposed	8873	Indirect

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	21524	Direct

Footnotes

F1: On June 15, 2020, Mr. Doubleday adopted a 10b5-1 Plan. This 10b5-1 Plan allows the orderly disposition of shares owned by Mr. Doubleday. 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 $366.87 to $367.66. 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.

F3: Shares are held by the Doubleday Living Trust U/A/D 5/26/2015, with respect to which the reporting person is a trustee.

F4: This transaction was executed in multiple trades at prices ranging from $367.90 to $368.49. 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 $369.16 to $369.82. 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 $370.240 to $370.595. 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 $371.675 to $372.015. 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.