Steven R. Altman - May 8, 2025 Form 4 Insider Report for DEXCOM INC (DXCM)

Role: Director
Signature: /s/ Jereme M. Sylvain, as Attorney-in-Fact for Steven R. Altman
Stock symbol: DXCM
Transactions as of: May 8, 2025
Transactions value $: $0
Form type: 4
Date filed: 5/12/2025, 04:07 PM
Previous filing: May 24, 2024
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
ALTMAN STEVEN R	Director	6340 SEQUENCE DRIVE, SAN DIEGO	/s/ Jereme M. Sylvain, as Attorney-in-Fact for Steven R. Altman	2025-05-12	0001191307

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	DXCM	Common Stock	Gift	$0	-2.61K	-100%	$0.00	0	May 8, 2025	Direct	F1
transaction	DXCM	Common Stock	Gift	$0	+2.61K	+4.66%	$0.00	58.6K	May 8, 2025	by Trust	F1, F2
transaction	DXCM	Common Stock	Award	$0	+5.04K		$0.00	5.04K	May 8, 2025	Direct	F3

Showing 1 to 3 of 3 entries

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Shares were transferred from direct ownership to ownership under the Steven R. and Lisa J. Altman, TTEE's Altman Family Trust DTD 8/21/92, upon vesting of previously awarded restricted stock units.
F2	Shares are held by the Steven R. and Lisa J. Altman, TTEE's Altman Family Trust DTD 8/21/92, with respect to which the reporting person is a trustee.
F3	The RSU Award was granted on May 8, 2025 and 100% of the RSU Award will vest on the earlier of the one year anniversary of the grant date or the date of DexCom, Inc.'s 2026 Annual Meeting of Stockholders. Each share is represented by a restricted stock unit (RSU) that represents a contingent right to receive one share of DexCom, Inc. Common Stock upon settlement.