DEXCOM INC — Director's Dealing 2018

Sep 27, 2018

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: DEXCOM INC (DXCM)
CIK: 0001093557
Period of Report: 2018-09-24

Reporting Person: DOUBLEDAY RICHARD (EVP, Chief Commercial Officer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2018-09-24	Common Stock	S	60	$138.2467	Disposed	20770	Indirect
2018-09-24	Common Stock	S	80	$139.7225	Disposed	20690	Indirect
2018-09-24	Common Stock	S	820	$140.8427	Disposed	19870	Indirect
2018-09-24	Common Stock	S	556	$141.7572	Disposed	19314	Indirect
2018-09-24	Common Stock	S	220	$142.4927	Disposed	19094	Indirect

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	66804	Direct

Footnotes

F1: On June 1, 2018, 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 $137.92 to $138.90. 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 $139.11 to $139.99. 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 $140.14 to $141.10. 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.

F6: This transaction was executed in multiple trades at prices ranging from $141.19 to $142.15. 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.

F7: This transaction was executed in multiple trades at prices ranging from $142.23 to $142.74. 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.