DEXCOM INC — Director's Dealing 2020

Jan 15, 2020

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: DEXCOM INC (DXCM)
CIK: 0001093557
Period of Report: 2020-01-13

Reporting Person: SAYER KEVIN R (Director, President, CEO and Chairman)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2020-01-13	Common Stock	S	247	$224.764	Disposed	202690	Direct
2020-01-13	Common Stock	S	272	$225.4584	Disposed	202418	Direct
2020-01-13	Common Stock	S	132	$226.205	Disposed	202286	Direct
2020-01-13	Common Stock	S	743	$227.7577	Disposed	201543	Direct
2020-01-13	Common Stock	S	1189	$228.6237	Disposed	200354	Direct
2020-01-13	Common Stock	S	78	$229.28	Disposed	200276	Direct
2020-01-13	Common Stock	S	260	$230.47	Disposed	200016	Direct
2020-01-13	Common Stock	S	1720	$232.7174	Disposed	198296	Direct
2020-01-13	Common Stock	S	1139	$233.6895	Disposed	197157	Direct
2020-01-13	Common Stock	S	220	$235.0	Disposed	196937	Direct

Footnotes

F1: On May 15, 2019, Mr. Sayer adopted a 10b5-1 Plan. This 10b5-1 Plan allows the orderly disposition of shares owned by Mr. Sayer. 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 $224.12 to $225.05. 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.

F3: Included in this number are 89,648 unvested restricted stock units, 35,829 of which were granted on March 8, 2019 and shall vest through March 8, 2022, 40,272 of which were granted on March 8, 2018 and shall vest through March 8, 2021, 13,547 of which were granted on March 8, 2017 and shall vest through March 8, 2020.

F4: This transaction was executed in multiple trades at prices ranging from $225.15 to $225.84. 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.

F5: This transaction was executed in multiple trades at prices ranging from $226.15 to $226.21. 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 $227.20 to $228.10. 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 $228.22 to $229.21. 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 $232.29 to $233.20. 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.

F9: This transaction was executed in multiple trades at prices ranging from $233.29 to $234.20. 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.