DEXCOM INC — Director's Dealing 2020

Mar 14, 2020

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: DEXCOM INC (DXCM)
CIK: 0001093557
Period of Report: 2020-03-11

Reporting Person: Blackford Quentin S. (Chief Operating Officer & CFO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2020-03-11	Common Stock	S	116	$246.6095	Disposed	81648	Direct
2020-03-11	Common Stock	S	129	$251.0282	Disposed	81519	Direct
2020-03-11	Common Stock	S	5963	$265.426	Disposed	75556	Direct
2020-03-12	Common Stock	S	583	$218.8376	Disposed	74973	Direct
2020-03-12	Common Stock	S	200	$219.365	Disposed	74773	Direct
2020-03-12	Common Stock	S	200	$220.5	Disposed	74573	Direct
2020-03-12	Common Stock	S	457	$223.6232	Disposed	74116	Direct
2020-03-12	Common Stock	S	400	$227.5625	Disposed	73716	Direct
2020-03-12	Common Stock	S	200	$228.86	Disposed	73516	Direct
2020-03-12	Common Stock	S	200	$232.0	Disposed	73316	Direct
2020-03-12	Common Stock	S	300	$234.2333	Disposed	73016	Direct
2020-03-12	Common Stock	S	472	$235.898	Disposed	72544	Direct
2020-03-12	Common Stock	S	641	$237.0976	Disposed	71903	Direct
2020-03-12	Common Stock	S	600	$238.2867	Disposed	71303	Direct
2020-03-12	Common Stock	S	1100	$239.6327	Disposed	70203	Direct
2020-03-12	Common Stock	S	500	$241.064	Disposed	69703	Direct
2020-03-12	Common Stock	S	400	$244.01	Disposed	69303	Direct
2020-03-12	Common Stock	S	100	$244.78	Disposed	69203	Direct

Footnotes

F1: Represents the number of shares required to be sold by the reporting person to cover tax withholding obligations in connection with the vesting of RSUs. This sale is mandated by the Issuer's election under its equity incentive plans to require the satisfaction of tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary trade by the reporting person.

F2: This transaction was executed in multiple trades at prices ranging from $246.00 to $246.62. 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 69,029 unvested restricted stock units, 12,727 of which were granted on March 8, 2020 and shall vest through March 8, 2023, 12,288 of which were granted on March 8, 2019 and shall vest through March 8, 2022, 12,834 of which were granted on March 8, 2018 and shall vest through March 8, 2021 and 31,180 of which were granted on September 7, 2017 and shall vest through September 7, 2021.

F4: On December 9, 2019, Mr. Blackford adopted a 10b5-1 Plan. This 10b5-1 Plan allows the orderly disposition of shares owned by Mr. Blackford. The shares set forth above were sold pursuant to the 10b5-1 Plan.

F5: This transaction was executed in multiple trades at prices ranging from $218.51 to $219. 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 $219.33 to $219.40. 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 $223.40 to $223.92. 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 $227.18 to $228.11. 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 $233.98 to $234.74. 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.

F10: This transaction was executed in multiple trades at prices ranging from $235.69 to $236.36. 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.

F11: This transaction was executed in multiple trades at prices ranging from $236.74 to $237.67. 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.

F12: This transaction was executed in multiple trades at prices ranging from $237.85 to $238.53. 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.

F13: This transaction was executed in multiple trades at prices ranging from $239.02 to $239.97. 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.

F14: This transaction was executed in multiple trades at prices ranging from $240.77 to $241.42. 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.

F15: This transaction was executed in multiple trades at prices ranging from $243.55 to $244.27. 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.