DEXCOM INC — Director's Dealing 2021

Dec 17, 2021

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: DEXCOM INC (DXCM)
CIK: 0001093557
Period of Report: 2021-12-15

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

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2021-12-15	Common Stock	S	200	$528.064	Disposed	84505	Direct
2021-12-15	Common Stock	S	148	$529.7766	Disposed	84357	Direct
2021-12-15	Common Stock	S	25	$530.44	Disposed	84332	Direct
2021-12-15	Common Stock	S	300	$531.8659	Disposed	84032	Direct
2021-12-15	Common Stock	S	100	$532.92	Disposed	83932	Direct
2021-12-15	Common Stock	S	500	$534.843	Disposed	83432	Direct
2021-12-15	Common Stock	S	250	$536.008	Disposed	83182	Direct
2021-12-15	Common Stock	S	271	$537.0772	Disposed	82911	Direct
2021-12-15	Common Stock	S	527	$538.1461	Disposed	82384	Direct
2021-12-15	Common Stock	S	179	$539.3237	Disposed	82205	Direct
2021-12-15	Common Stock	S	200	$540.4025	Disposed	82005	Direct
2021-12-15	Common Stock	S	200	$541.39	Disposed	81805	Direct
2021-12-15	Common Stock	S	50	$542.06	Disposed	81755	Direct
2021-12-15	Common Stock	S	50	$543.83	Disposed	81705	Direct

Footnotes

F1: On July 31, 2020, Mr. Sayer adopted a 10b5-1 Plan, which was amended effective June 15, 2021. 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 $527.75 to $528.59. 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.

F3: Included in this number are 36,385 unvested restricted stock units, 13,445 of which were granted on March 8, 2021 and shall vest through March 8, 2024, 16,968 of which were granted on March 8, 2020 and shall vest through March 8, 2023, and 5,972 of which were granted on March 8, 2019 and shall vest through March 8, 2022.

F4: This transaction was executed in multiple trades at prices ranging from $529.35 to $530.15. 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 $531.45 to $532.11. 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.

F6: This transaction was executed in multiple trades at prices ranging from $534.32 to $535.14. 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 $535.47 to $536.395. 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 $536.53 to $537.52. 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 $537.59 to $538.47. 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 $538.74 to $539.56. 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 $539.96 to $540.94. 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 $541.06 to $541.785. 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.