DEXCOM INC — Director's Dealing 2020

Mar 11, 2020

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: DEXCOM INC (DXCM)
CIK: 0001093557
Period of Report: 2020-03-09

Reporting Person: ACE HEATHER S (SVP Human Resources)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2020-03-09	Common Stock	S	227	$261.5463	Disposed	52449	Direct
2020-03-09	Common Stock	S	300	$262.0	Disposed	52149	Direct
2020-03-09	Common Stock	S	300	$263.15	Disposed	51849	Direct
2020-03-09	Common Stock	S	100	$264.93	Disposed	51749	Direct
2020-03-09	Common Stock	S	1500	$267.1329	Disposed	50249	Direct
2020-03-09	Common Stock	S	1300	$268.0696	Disposed	48949	Direct
2020-03-09	Common Stock	S	200	$268.995	Disposed	48749	Direct
2020-03-09	Common Stock	S	200	$270.505	Disposed	48549	Direct
2020-03-09	Common Stock	S	600	$272.265	Disposed	47949	Direct
2020-03-09	Common Stock	S	3158	$273.3049	Disposed	44791	Direct

Footnotes

F1: On August 30, 2018, Ms. Ace adopted a 10b5-1 Plan. This 10b5-1 Plan allows the orderly disposition of shares owned by Ms. Ace. 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 $261.00 to $261.80. 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 24,715 unvested restricted stock units, 7,809 of which were granted on March 8, 2019 and shall vest through March 8, 2022, 10,031 of which were granted on March 8, 2018 and shall vest through March 8, 2021, and 6,875 of which were granted on August 22, 2016 and shall vest through August 22, 2020.

F4: This transaction was executed in multiple trades at prices ranging from $266.67 to $267.64. 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.

F5: This transaction was executed in multiple trades at prices ranging from $267.745 to $268.545. 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 $268.99 to $269.00. 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 $270.01 to $271.00. 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 $271.85 to $272.59. 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 $272.89 to $273.71. 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.