DEXCOM INC (DXCM)

Data as of Sep 30, 2026, from SEC Form 4 filings.

S&P 500Nasdaq-100NasdaqSurgical & Medical Instruments & ApparatusNet insider selling (90d)Watch DXCM

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Sadie Stern - Officer
Open-market sale$221K
Sep 28, 2026
Nicholas Augustinos

About DEXCOM INC (DXCM)

DexCom designs and commercializes continuous glucose monitoring systems for diabetic patients. CGM systems serve as an alternative to the traditional blood glucose meter process, and the company is evolving its CGM systems to provide integration with insulin pumps from Insulet and Tandem for automatic insulin delivery. DexCom's CGMs are available through medical equipment distributors as well as retail pharmacies.

Headquarters: SAN DIEGO, CA
Employees: 11,100
Listed: 2005
Exchange: Nasdaq
Sector: Health Care

https://www.dexcom.com SEC filings for DXCM on EDGAR

DXCM Form 4 activity by transaction type, last 90 days

Form 4 transaction type	Transactions	Shares	Total value
Open-market sale	14	78,781	$6.60M
Grant or award	1	5,841
Tax withholding / forfeiture	4	5,804

DXCM insider transactions (Form 4)

94 Form 4 filings on record, the earliest from Nov 18, 2024, newest first. Filing history page 1 of 3.

Traded	Insider	Transaction	Security	Shares	Price	Value
Sep 28, 2026	Sadie Stern - Officer	Open-market sale	Common Stock	2,565^{footnote F1}	$86.15	$221K
Footnote F1 (shares): On May 28, 2026, Ms. Stern adopted a 10b5-1 Plan. This 10b5-1 Plan allows the orderly disposition of shares owned by Ms. Stern. The shares set forth above were sold pursuant to the 10b5-1 Plan.
Sep 14, 2026	Nicholas Augustinos - Director	Open-market sale	Common Stock	1,550^{footnote F1}	$84.02	$130K
Sep 15, 2026	Nicholas Augustinos - Director	Open-market sale	Common Stock	6,539^{footnote F1}	$84.04	$550K
Footnote F1 (shares): On June 10, 2026, Mr. Augustinos adopted a 10b5-1 Plan. This 10b5-1 Plan allows the orderly disposition of shares owned by Mr. Augustinos. The shares set forth above were sold pursuant to the 10b5-1 Plan.
Sep 15, 2026	Michael Jon Brown - Officer	Open-market sale	Common Stock	1,700^{footnote F1}	$84.04	$143K
Footnote F1 (shares): On November 26, 2025, Mr. Brown adopted a 10b5-1 Plan. This 10b5-1 Plan allows the orderly disposition of shares owned by Mr. Brown. The shares set forth above were sold pursuant to the 10b5- 1 Plan.
Sep 10, 2026	Jereme M. Sylvain - Officer	Open-market sale	Common Stock	3,638^{footnote F1}	$83.27	$303K
Footnote F1 (shares): On June 10, 2026, Mr. Sylvain adopted a 10b5-1 Plan. This 10b5-1 Plan allows the orderly disposition of shares owned by Mr. Sylvain. The shares set forth above were sold pursuant to the 10b5-1 Plan.
Sep 10, 2026	Glenn S. Boehnlein - Director	Grant or award	Common Stock	5,841^{footnote F1}	$0.00	-
Footnote F1 (shares): Represents a grant of restricted stock units that are exempt from Section 16b-3 and are subject to vesting in three equal annual installments from the date of grant. Restricted stock units represent a contingent right to receive one share of DexCom, Inc. Common Stock.
Aug 27, 2026	Sadie Stern - Officer	Open-market sale	Common Stock	2,565^{footnote F1}	$88.37	$227K
Footnote F1 (shares): On May 28, 2026, Ms. Stern adopted a 10b5-1 Plan. This 10b5-1 Plan allows the orderly disposition of shares owned by Ms. Stern. The shares set forth above were sold pursuant to the 10b5-1 Plan.
Aug 22, 2026	Jacob Steven Leach - Officer	Tax withholding / forfeiture	Common Stock	1,451^{footnote F1}	$92.34	$134K
Footnote F1 (shares): Represents the number of shares required to be withheld by the Issuer to cover tax withholding and remittance obligations in connection with the net settlement of restricted stock units and does not represent a sale by the Reporting Person.
Aug 22, 2026	Jereme M. Sylvain - Officer	Tax withholding / forfeiture	Common Stock	1,451^{footnote F1}	$92.34	$134K
Footnote F1 (shares): Represents the number of shares required to be withheld by the Issuer to cover tax withholding and remittance obligations in connection with the net settlement of restricted stock units and does not represent a sale by the Reporting Person.
Aug 22, 2026	Michael Jon Brown - Officer	Tax withholding / forfeiture	Common Stock	1,451^{footnote F1}	$92.34	$134K
Footnote F1 (shares): Represents the number of shares required to be withheld by the Issuer to cover tax withholding and remittance obligations in connection with the net settlement of restricted stock units and does not represent a sale by the Reporting Person.
Aug 22, 2026	Sadie Stern - Officer	Tax withholding / forfeiture	Common Stock	1,451^{footnote F1}	$92.34	$134K
Footnote F1 (shares): Represents the number of shares required to be withheld by the Issuer to cover tax withholding and remittance obligations in connection with the net settlement of restricted stock units and does not represent a sale by the Reporting Person.
Aug 20, 2026	Kevin R. Sayer - Officer	Open-market sale	Common Stock	19,308^{footnote F1}	$89.71^{footnote F2}	$1.73M
Aug 20, 2026	Kevin R. Sayer - Officer	Open-market sale	Common Stock	7,351^{footnote F1}	$90.78^{footnote F4}	$667K
Aug 20, 2026	Kevin R. Sayer - Officer	Open-market sale	Common Stock	97^{footnote F1}	$91.41	$9K
Footnote F1 (shares): On February 18, 2026, Mr. Sayer adopted a 10b5-1 Plan. 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. Footnote F2 (price): This transaction was executed in multiple trades at prices ranging from $89.275 to $90.25. 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 note on SEC EDGAR Footnote F4 (price): This transaction was executed in multiple trades at prices ranging from $90.32 to $91.19. 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… Full note on SEC EDGAR
Aug 14, 2026	Michael Jon Brown - Officer	Open-market sale	Common Stock	1,700^{footnote F1}	$91.93	$156K
Footnote F1 (shares): On November 26, 2025, Mr. Brown adopted a 10b5-1 Plan. This 10b5-1 Plan allows the orderly disposition of shares owned by Mr. Brown. The shares set forth above were sold pursuant to the 10b5- 1 Plan.
Aug 12, 2026	Nicholas Augustinos - Director	Gift	Common Stock	1,075	$0.00	-
Aug 12, 2026	Bridgette P. Heller - Director	Open-market sale	Common Stock	1,012^{footnote F1}	$88.29	$89K
Footnote F1 (shares): On August 14, 2025, Ms. Heller adopted a 10b5-1 Plan. This 10b5-1 Plan allows the orderly disposition of shares owned by Ms. Heller. The shares set forth above were sold pursuant to the 10b5-1 Plan.
Jul 31, 2026	Mark G. Foletta - Director	Open-market sale	Common Stock	2,000^{footnote F1}	$80.00	$160K
Aug 3, 2026	Mark G. Foletta - Director	Open-market sale	Common Stock	2,000^{footnote F1}	$85.32	$171K
Footnote F1 (shares): On March 13, 2026, The Foletta Family Trust DTD 1/30/2015 (the "Trust") adopted a 10b5-1 Plan. This 10b5-1 Plan allows the orderly disposition of shares owned by the Trust. The shares set forth above were sold pursuant to the 10b5-1 Plan.
Jul 20, 2026	Kevin R. Sayer - Officer	Open-market sale	Common Stock	26,756^{footnote F1}	$76.32^{footnote F2}	$2.04M
Footnote F1 (shares): On February 18, 2026, Mr. Sayer adopted a 10b5-1 Plan. 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. Footnote F2 (price): This transaction was executed in multiple trades at prices ranging from $75.80 to $76.62. 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… Full note on SEC EDGAR
Jul 15, 2026	Michael Jon Brown - Officer	Open-market sale	Common Stock	1,700^{footnote F1}	$74.42	$127K
Footnote F1 (shares): On November 26, 2025, Mr. Brown adopted a 10b5-1 Plan. This 10b5-1 Plan allows the orderly disposition of shares owned by Mr. Brown. The shares set forth above were sold pursuant to the 10b5- 1 Plan.
Jul 6, 2026	Kevin R. Sayer - Officer	Open-market sale	Common Stock	26,756^{footnote F1}	$72.00	$1.93M
Footnote F1 (shares): On February 18, 2026, Mr. Sayer adopted a 10b5-1 Plan. 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.
Jun 15, 2026	Michael Jon Brown - Officer	Open-market sale	Common Stock	1,700^{footnote F1}	$75.55	$128K
Footnote F1 (shares): On November 26, 2025, Mr. Brown adopted a 10b5-1 Plan. This 10b5-1 Plan allows the orderly disposition of shares owned by Mr. Brown. The shares set forth above were sold pursuant to the 10b5- 1 Plan.
Jun 15, 2026	Mark G. Foletta - Director	Open-market sale	Common Stock	3,801^{footnote F1}	$74.10^{footnote F2}	$282K
Jun 15, 2026	Mark G. Foletta - Director	Open-market sale	Common Stock	199^{footnote F1}	$74.82^{footnote F4}	$15K
Footnote F1 (shares): On March 13, 2026, The Foletta Family Trust DTD 1/30/2015 (the "Trust") adopted a 10b5-1 Plan. This 10b5-1 Plan allows the orderly disposition of shares owned by the Trust. The shares set forth above were sold pursuant to the 10b5-1 Plan. Footnote F2 (price): This transaction was executed in multiple trades at prices ranging from $73.70 to $74.685. 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 note on SEC EDGAR Footnote F4 (price): This transaction was executed in multiple trades at prices ranging from $74.78 to $75.55. 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… Full note on SEC EDGAR
Jun 3, 2026	Jon Coleman - Officer	Open-market sale	Common Stock	4,912^{footnote F1}	$73.00	$359K
Jun 4, 2026	Jon Coleman - Officer	Open-market sale	Common Stock	4,911^{footnote F1}	$74.13	$364K
Footnote F1 (shares): On March 4, 2026, Mr. Coleman adopted a 10b5-1 Plan. This 10b5-1 Plan allows the orderly disposition of shares owned by Mr. Coleman. The shares set forth above were sold pursuant to the 10b5- 1 Plan.
May 28, 2026	Steven R. Altman - Director	Grant or award	Common Stock	5,565^{footnote F1}	$0.00	-
Footnote F1 (shares): The RSU Award was granted on May 28, 2026 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 2027 Annual Meeting of Stockholders. Each share is represented by a restricted stock unit (RSU) that… Full note on SEC EDGAR
May 28, 2026	Kyle Malady - Director	Grant or award	Common Stock	5,575^{footnote F1}	$0.00	-
Footnote F1 (shares): The RSU Award was granted on May 28, 2026 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 2027 Annual Meeting of Stockholders. Each share is represented by a restricted stock unit (RSU) that… Full note on SEC EDGAR
May 28, 2026	Nicholas Augustinos - Director	Grant or award	Common Stock	5,575^{footnote F1}	$0.00	-
Footnote F1 (shares): The RSU Award was granted on May 28, 2026 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 2027 Annual Meeting of Stockholders. Each share is represented by a restricted stock unit (RSU) that… Full note on SEC EDGAR
May 28, 2026	Mark G. Foletta - Director	Grant or award	Common Stock	6,331^{footnote F1}	$0.00	-
Footnote F1 (shares): The RSU Award was granted on May 28, 2026 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 2027 Annual Meeting of Stockholders. Each share is represented by a restricted stock unit (RSU) that… Full note on SEC EDGAR
May 28, 2026	Bridgette P. Heller - Director	Grant or award	Common Stock	5,575^{footnote F1}	$0.00	-
Footnote F1 (shares): The RSU Award was granted on May 28, 2026 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 2027 Annual Meeting of Stockholders. Each share is represented by a restricted stock unit (RSU) that… Full note on SEC EDGAR
May 28, 2026	Albert Frederick Osterloh IV - Director	Grant or award	Common Stock	1,630^{footnote F1}	$0.00	-
Footnote F1 (shares): The RSU Award was granted on May 28, 2026 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 2027 Annual Meeting of Stockholders. Each share is represented by a restricted stock unit (RSU) that… Full note on SEC EDGAR
May 28, 2026	Rimma Driscoll - Director	Grant or award	Common Stock	5,605^{footnote F1}	$0.00	-
Footnote F1 (shares): The RSU Award was granted on May 28, 2026 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 2027 Annual Meeting of Stockholders. Each share is represented by a restricted stock unit (RSU) that… Full note on SEC EDGAR
May 28, 2026	Euan A. Ashley - Director	Grant or award	Common Stock	5,565^{footnote F1}	$0.00	-
Footnote F1 (shares): The RSU Award was granted on May 28, 2026 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 2027 Annual Meeting of Stockholders. Each share is represented by a restricted stock unit (RSU) that… Full note on SEC EDGAR
May 28, 2026	Richard Alexander Collins - Director	Grant or award	Common Stock	5,605^{footnote F1}	$0.00	-
Footnote F1 (shares): The RSU Award was granted on May 28, 2026 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 2027 Annual Meeting of Stockholders. Each share is represented by a restricted stock unit (RSU) that… Full note on SEC EDGAR

Recent DXCM Form 8-K filings

Read DXCM company news

Sep 14, 2026Item 5.02, 7.01, 9.01

Read the filing on SEC EDGAR

Sep 10, 2026Item 5.02, 7.01, 9.01

Read the filing on SEC EDGAR

Jul 30, 2026Item 2.02, 9.01

Read the filing on SEC EDGAR

May 28, 2026Item 5.07

Recent DXCM Form 144 notices of proposed sale

An insider files Form 144 before selling restricted or control stock. It announces a planned sale. If the sale goes ahead, it shows up later on a Form 4.

Filed	Filer	Relationship	Shares	Market value	Notice
Oct 15, 2026	MICHAEL BROWN	Officer	1,700	$145K	View on EDGAR
Sep 28, 2026	SADIE STERN	Officer	2,565

DXCM insider trading FAQ

What is the latest insider trade for DXCM?

DEXCOM INC (DXCM) had 16 insider filings in the last 90 days, with the most recent on 2026-09-30. The full record for DXCM runs to 94 Form 4 filings, the earliest from 2024-11-18. InsiderAlpha adds new Form 4, Form 144 and 8-K filings as they arrive from SEC EDGAR.

How many insiders are buying DXCM stock?

No insider purchases of DXCM were filed in the last 90 days. 2 purchases are on record for this company.

How many insiders are selling DXCM stock?

14 insider sales of DXCM were filed in the last 90 days, totaling $6.60M.

Where can I see DXCM SEC filings (Form 4, 10-K, 10-Q, 8-K)?

This page collects DXCM Form 4 insider transactions, Form 144 sale notices and 8-K filings in one place. Annual 10-K and quarterly 10-Q reports live on the company's SEC EDGAR page.

More Health Care companies with insider activity

Recent insider filings

The EDGAR links open each original Form 4, so you can check any number on this page against the filing it came from.

Sep 30, 2026 - Sadie Stern view on EDGAR
Sep 16, 2026 - Nicholas Augustinos view on EDGAR
Sep 16, 2026 - Michael Jon Brown view on EDGAR
Sep 14, 2026 - Jereme M. Sylvain view on EDGAR
Sep 10, 2026 - Glenn S. Boehnlein view on EDGAR
Aug 28, 2026 - Sadie Stern view on EDGAR
Aug 25, 2026 - Jacob Steven Leach view on EDGAR
Aug 25, 2026 - Jereme M. Sylvain view on EDGAR
Aug 25, 2026 - Michael Jon Brown view on EDGAR

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Learn more

Insider selling: signal or noise?: Why most insider sales are routine, and the few patterns worth a second look.
Form 144 vs Form 4: A Form 144 announces a planned sale; the Form 4 reports it after it happens.
Insider activity in Health Care: Where DXCM's peers are being bought and sold.
Every recent Form 4: The market-wide feed, updated as filings arrive from SEC EDGAR.

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Form 4 transaction type

Transactions

Total value

Open-market sale

78,781

$6.60M

Grant or award

5,841

Tax withholding / forfeiture

5,804

Traded

Insider

Transaction

Security

Price

Value

Sep 28, 2026

Sadie Stern - Officer

Open-market sale

Common Stock

2,565^{footnote F1}

$86.15

$221K

Footnote F1 (shares): On May 28, 2026, Ms. Stern adopted a 10b5-1 Plan. This 10b5-1 Plan allows the orderly disposition of shares owned by Ms. Stern. The shares set forth above were sold pursuant to the 10b5-1 Plan.

Sep 14, 2026

Nicholas Augustinos - Director

Open-market sale

Common Stock

1,550^{footnote F1}

$84.02

$130K

Sep 15, 2026

Nicholas Augustinos - Director

Open-market sale

Common Stock

6,539^{footnote F1}

$84.04

$550K

Footnote F1 (shares): On June 10, 2026, Mr. Augustinos adopted a 10b5-1 Plan. This 10b5-1 Plan allows the orderly disposition of shares owned by Mr. Augustinos. The shares set forth above were sold pursuant to the 10b5-1 Plan.

Sep 15, 2026

Michael Jon Brown - Officer

Open-market sale

Common Stock

1,700^{footnote F1}

$84.04

$143K

Footnote F1 (shares): On November 26, 2025, Mr. Brown adopted a 10b5-1 Plan. This 10b5-1 Plan allows the orderly disposition of shares owned by Mr. Brown. The shares set forth above were sold pursuant to the 10b5- 1 Plan.

Sep 10, 2026

Jereme M. Sylvain - Officer

Open-market sale

Common Stock

3,638^{footnote F1}

$83.27

$303K

Footnote F1 (shares): On June 10, 2026, Mr. Sylvain adopted a 10b5-1 Plan. This 10b5-1 Plan allows the orderly disposition of shares owned by Mr. Sylvain. The shares set forth above were sold pursuant to the 10b5-1 Plan.

Sep 10, 2026

Glenn S. Boehnlein - Director

Grant or award

Common Stock

5,841^{footnote F1}

$0.00

Footnote F1 (shares): Represents a grant of restricted stock units that are exempt from Section 16b-3 and are subject to vesting in three equal annual installments from the date of grant. Restricted stock units represent a contingent right to receive one share of DexCom, Inc. Common Stock.

Aug 27, 2026

Sadie Stern - Officer

Open-market sale

Common Stock

2,565^{footnote F1}

$88.37

$227K

Footnote F1 (shares): On May 28, 2026, Ms. Stern adopted a 10b5-1 Plan. This 10b5-1 Plan allows the orderly disposition of shares owned by Ms. Stern. The shares set forth above were sold pursuant to the 10b5-1 Plan.

Aug 22, 2026

Jacob Steven Leach - Officer

Tax withholding / forfeiture

Common Stock

1,451^{footnote F1}

$92.34

$134K

Footnote F1 (shares): Represents the number of shares required to be withheld by the Issuer to cover tax withholding and remittance obligations in connection with the net settlement of restricted stock units and does not represent a sale by the Reporting Person.

Aug 22, 2026

Jereme M. Sylvain - Officer

Tax withholding / forfeiture

Common Stock

1,451^{footnote F1}

$92.34

$134K

Footnote F1 (shares): Represents the number of shares required to be withheld by the Issuer to cover tax withholding and remittance obligations in connection with the net settlement of restricted stock units and does not represent a sale by the Reporting Person.

Aug 22, 2026

Michael Jon Brown - Officer

Tax withholding / forfeiture

Common Stock

1,451^{footnote F1}

$92.34

$134K

Footnote F1 (shares): Represents the number of shares required to be withheld by the Issuer to cover tax withholding and remittance obligations in connection with the net settlement of restricted stock units and does not represent a sale by the Reporting Person.

Aug 22, 2026

Sadie Stern - Officer

Tax withholding / forfeiture

Common Stock

1,451^{footnote F1}

$92.34

$134K

Footnote F1 (shares): Represents the number of shares required to be withheld by the Issuer to cover tax withholding and remittance obligations in connection with the net settlement of restricted stock units and does not represent a sale by the Reporting Person.

Aug 20, 2026

Kevin R. Sayer - Officer

Open-market sale

Common Stock

19,308^{footnote F1}

$89.71^{footnote F2}

$1.73M

Aug 20, 2026

Kevin R. Sayer - Officer

Open-market sale

Common Stock

7,351^{footnote F1}

$90.78^{footnote F4}

$667K

Aug 20, 2026

Kevin R. Sayer - Officer

Open-market sale

Common Stock

97^{footnote F1}

$91.41

$9K

Footnote F1 (shares): On February 18, 2026, Mr. Sayer adopted a 10b5-1 Plan. 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.
Footnote F2 (price): This transaction was executed in multiple trades at prices ranging from $89.275 to $90.25. 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 note on SEC EDGAR
Footnote F4 (price): This transaction was executed in multiple trades at prices ranging from $90.32 to $91.19. 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… Full note on SEC EDGAR

Aug 14, 2026

Michael Jon Brown - Officer

Open-market sale

Common Stock

1,700^{footnote F1}

$91.93

$156K

Footnote F1 (shares): On November 26, 2025, Mr. Brown adopted a 10b5-1 Plan. This 10b5-1 Plan allows the orderly disposition of shares owned by Mr. Brown. The shares set forth above were sold pursuant to the 10b5- 1 Plan.

Aug 12, 2026

Nicholas Augustinos - Director

Gift

Common Stock

1,075

$0.00

Aug 12, 2026

Bridgette P. Heller - Director

Open-market sale

Common Stock

1,012^{footnote F1}

$88.29

$89K

Footnote F1 (shares): On August 14, 2025, Ms. Heller adopted a 10b5-1 Plan. This 10b5-1 Plan allows the orderly disposition of shares owned by Ms. Heller. The shares set forth above were sold pursuant to the 10b5-1 Plan.

Jul 31, 2026

Mark G. Foletta - Director

Open-market sale

Common Stock

2,000^{footnote F1}

$80.00

$160K

Aug 3, 2026

Mark G. Foletta - Director

Open-market sale

Common Stock

2,000^{footnote F1}

$85.32

$171K

Footnote F1 (shares): On March 13, 2026, The Foletta Family Trust DTD 1/30/2015 (the "Trust") adopted a 10b5-1 Plan. This 10b5-1 Plan allows the orderly disposition of shares owned by the Trust. The shares set forth above were sold pursuant to the 10b5-1 Plan.

Jul 20, 2026

Kevin R. Sayer - Officer

Open-market sale

Common Stock

26,756^{footnote F1}

$76.32^{footnote F2}

$2.04M

Footnote F1 (shares): On February 18, 2026, Mr. Sayer adopted a 10b5-1 Plan. 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.
Footnote F2 (price): This transaction was executed in multiple trades at prices ranging from $75.80 to $76.62. 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… Full note on SEC EDGAR

Jul 15, 2026

Michael Jon Brown - Officer

Open-market sale

Common Stock

1,700^{footnote F1}

$74.42

$127K

Footnote F1 (shares): On November 26, 2025, Mr. Brown adopted a 10b5-1 Plan. This 10b5-1 Plan allows the orderly disposition of shares owned by Mr. Brown. The shares set forth above were sold pursuant to the 10b5- 1 Plan.

Jul 6, 2026

Kevin R. Sayer - Officer

Open-market sale

Common Stock

26,756^{footnote F1}

$72.00

$1.93M

Footnote F1 (shares): On February 18, 2026, Mr. Sayer adopted a 10b5-1 Plan. 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.

Jun 15, 2026

Michael Jon Brown - Officer

Open-market sale

Common Stock

1,700^{footnote F1}

$75.55

$128K

Footnote F1 (shares): On November 26, 2025, Mr. Brown adopted a 10b5-1 Plan. This 10b5-1 Plan allows the orderly disposition of shares owned by Mr. Brown. The shares set forth above were sold pursuant to the 10b5- 1 Plan.

Jun 15, 2026

Mark G. Foletta - Director

Open-market sale

Common Stock

3,801^{footnote F1}

$74.10^{footnote F2}

$282K

Jun 15, 2026

Mark G. Foletta - Director

Open-market sale

Common Stock

199^{footnote F1}

$74.82^{footnote F4}

$15K

Footnote F1 (shares): On March 13, 2026, The Foletta Family Trust DTD 1/30/2015 (the "Trust") adopted a 10b5-1 Plan. This 10b5-1 Plan allows the orderly disposition of shares owned by the Trust. The shares set forth above were sold pursuant to the 10b5-1 Plan.
Footnote F2 (price): This transaction was executed in multiple trades at prices ranging from $73.70 to $74.685. 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 note on SEC EDGAR
Footnote F4 (price): This transaction was executed in multiple trades at prices ranging from $74.78 to $75.55. 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… Full note on SEC EDGAR

Jun 3, 2026

Jon Coleman - Officer

Open-market sale

Common Stock

4,912^{footnote F1}

$73.00

$359K

Jun 4, 2026

Jon Coleman - Officer

Open-market sale

Common Stock

4,911^{footnote F1}

$74.13

$364K

Footnote F1 (shares): On March 4, 2026, Mr. Coleman adopted a 10b5-1 Plan. This 10b5-1 Plan allows the orderly disposition of shares owned by Mr. Coleman. The shares set forth above were sold pursuant to the 10b5- 1 Plan.

May 28, 2026

Steven R. Altman - Director

Grant or award

Common Stock

5,565^{footnote F1}

$0.00

Footnote F1 (shares): The RSU Award was granted on May 28, 2026 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 2027 Annual Meeting of Stockholders. Each share is represented by a restricted stock unit (RSU) that… Full note on SEC EDGAR

May 28, 2026

Kyle Malady - Director

Grant or award

Common Stock

5,575^{footnote F1}

$0.00

Footnote F1 (shares): The RSU Award was granted on May 28, 2026 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 2027 Annual Meeting of Stockholders. Each share is represented by a restricted stock unit (RSU) that… Full note on SEC EDGAR

May 28, 2026

Nicholas Augustinos - Director

Grant or award

Common Stock

5,575^{footnote F1}

$0.00

Footnote F1 (shares): The RSU Award was granted on May 28, 2026 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 2027 Annual Meeting of Stockholders. Each share is represented by a restricted stock unit (RSU) that… Full note on SEC EDGAR

May 28, 2026

Mark G. Foletta - Director

Grant or award

Common Stock

6,331^{footnote F1}

$0.00

Footnote F1 (shares): The RSU Award was granted on May 28, 2026 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 2027 Annual Meeting of Stockholders. Each share is represented by a restricted stock unit (RSU) that… Full note on SEC EDGAR

May 28, 2026

Bridgette P. Heller - Director

Grant or award

Common Stock

5,575^{footnote F1}

$0.00

Footnote F1 (shares): The RSU Award was granted on May 28, 2026 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 2027 Annual Meeting of Stockholders. Each share is represented by a restricted stock unit (RSU) that… Full note on SEC EDGAR

May 28, 2026

Albert Frederick Osterloh IV - Director

Grant or award

Common Stock

1,630^{footnote F1}

$0.00

Footnote F1 (shares): The RSU Award was granted on May 28, 2026 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 2027 Annual Meeting of Stockholders. Each share is represented by a restricted stock unit (RSU) that… Full note on SEC EDGAR

May 28, 2026

Rimma Driscoll - Director

Grant or award

Common Stock

5,605^{footnote F1}

$0.00

Footnote F1 (shares): The RSU Award was granted on May 28, 2026 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 2027 Annual Meeting of Stockholders. Each share is represented by a restricted stock unit (RSU) that… Full note on SEC EDGAR

May 28, 2026

Euan A. Ashley - Director

Grant or award

Common Stock

5,565^{footnote F1}

$0.00

Footnote F1 (shares): The RSU Award was granted on May 28, 2026 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 2027 Annual Meeting of Stockholders. Each share is represented by a restricted stock unit (RSU) that… Full note on SEC EDGAR

May 28, 2026

Richard Alexander Collins - Director

Grant or award

Common Stock

5,605^{footnote F1}

$0.00

Footnote F1 (shares): The RSU Award was granted on May 28, 2026 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 2027 Annual Meeting of Stockholders. Each share is represented by a restricted stock unit (RSU) that… Full note on SEC EDGAR

Filed

Filer

Relationship

Market value

Notice

Oct 15, 2026

MICHAEL BROWN

Officer

1,700

$145K

View on EDGAR

Sep 28, 2026

SADIE STERN

Officer

2,565