Nicholas Augustinos - 12 Aug 2026 Form 4 Insider Report for DEXCOM INC (DXCM)

Reporting relationship: Director
Issuer ticker: DXCM
Reported as of: 12 Aug 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 13 Aug 2026, 18:38:26 UTC
Prior SEC filing: 01 Jun 2026
Source filing: View source filing
Reporting owner signature: /s/ Jereme M. Sylvain, as Attorney-in-Fact for Nicholas Augustinos

Key filing fact

Nicholas Augustinos filed Form 4 for DEXCOM INC (DXCM) on 13 Aug 2026.

Key facts

This page summarizes Nicholas Augustinos's Form 4 filing for DEXCOM INC (DXCM).
1 reported transaction and 0 derivative rows are listed below.
Accepted by SEC: 13 Aug 2026, 18:38.

Change

Previous filing in this sequence was filed on 01 Jun 2026.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001238485 Primary reporting owner

AUGUSTINOS NICHOLAS

Relationship: Director
Address: 6340 SEQUENCE DRIVE, SAN DIEGO
Signature: /s/ Jereme M. Sylvain, as Attorney-in-Fact for Nicholas Augustinos
Signature date: 13 Aug 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

DXCM transaction

Common Stock

Gift

Transaction value
Shares: -1,075
Change %: -2.8%
Price: $0.000000^*
Shares after: 37,382
Date: 12 Aug 2026
Ownership: by Trust
Footnotes: F1, F2

DXCM holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 5,575
Date: 12 Aug 2026
Ownership: Direct
Footnotes: F3

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 3 footnotes

Footnote F1

Represents a donation of shares to a charitable donor advised fund.

Footnote F2

Shares are held by the Kirschner/Augustinos Revocable Trust, with respect to which the Reporting Person is a trustee.

Footnote F3

Represents unvested restricted stock units which were granted on May 28, 2026 and will vest on the earlier of the one year anniversary of the grant date or the date of DexCom, Inc.'s 2027 Annual Meeting of Stockholders.