DEXCOM INC (DXCM)

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

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

About DEXCOM INC (DXCM)

DEXCOM INC files with the SEC under CIK 0001093557 and is classified as surgical and medical instruments and apparatus. It is grouped with Health Care companies on this site.

Sector: Health Care

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 2 of 3.

Traded	Insider	Transaction	Security	Shares	Price	Value
May 28, 2026	Renee D. Gala - 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 22, 2026	Jacob Steven Leach - Officer	Tax withholding / forfeiture	Common Stock	1,451^{footnote F1}	$71.90	$104K
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.
May 22, 2026	Michael Jon Brown - Officer	Tax withholding / forfeiture	Common Stock	1,451^{footnote F1}	$71.90	$104K
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.
May 22, 2026	Jereme M. Sylvain - Officer	Tax withholding / forfeiture	Common Stock	1,451^{footnote F1}	$71.90	$104K
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.
May 22, 2026	Sadie Stern - Officer	Tax withholding / forfeiture	Common Stock	1,451^{footnote F1}	$71.90	$104K
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.
May 22, 2026	Jon Coleman - Officer	Tax withholding / forfeiture	Common Stock	7,362^{footnote F1}	$71.90	$529K
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.
May 21, 2026	Kevin R. Sayer - Officer	Open-market sale	Common Stock	26,759^{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.
May 15, 2026	Michael Jon Brown - Officer	Open-market sale	Common Stock	1,700^{footnote F1}	$59.91	$102K
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.
May 12, 2026	Bridgette P. Heller - Director	Open-market sale	Common Stock	1,012^{footnote F1}	$60.01	$61K
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.
May 8, 2026	Nicholas Augustinos - Director	Gift	Common Stock	5,046^{footnote F1}	$0.00	-
May 8, 2026	Nicholas Augustinos - Director	Gift	Common Stock	5,046^{footnote F1}	$0.00	-
Footnote F1 (shares): Shares were transferred from direct ownership to ownership under the Kirschner/Augustinos Revocable Trust, upon vesting of previously awarded restricted stock units.
May 8, 2026	Richard Alexander Collins - Director	Gift	Common Stock	5,074^{footnote F1}	$0.00	-
May 8, 2026	Richard Alexander Collins - Director	Gift	Common Stock	5,074^{footnote F1}	$0.00	-
Footnote F1 (shares): Shares were transferred from direct ownership to ownership under the Richard A. Collins Revocable Trust upon vesting of previously awarded restricted stock units.
May 8, 2026	Mark G. Foletta - Director	Gift	Common Stock	5,731^{footnote F1}	$0.00	-
May 8, 2026	Mark G. Foletta - Director	Gift	Common Stock	5,731^{footnote F1}	$0.00	-
Footnote F1 (shares): Shares were transferred from direct ownership to ownership under the Mark G. and Mary E. Foletta, TTEE's for the Foletta Family Trust DTD 1/30/15, upon vesting of previously awarded restricted stock units.
May 8, 2026	Steven R. Altman - Director	Gift	Common Stock	5,037^{footnote F1}	$0.00	-
May 8, 2026	Steven R. Altman - Director	Gift	Common Stock	5,037^{footnote F1}	$0.00	-
Footnote F1 (shares): 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.
Apr 15, 2026	Michael Jon Brown - Officer	Open-market sale	Common Stock	1,700^{footnote F1}	$63.04	$107K
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.
Mar 16, 2026	Michael Jon Brown - Officer	Open-market sale	Common Stock	1,700^{footnote F1}	$64.85	$110K
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.
Mar 8, 2026	Kevin R. Sayer - Officer	Grant or award	Common Stock	32,749^{footnote F1}	$0.00	-
Mar 8, 2026	Kevin R. Sayer - Officer	Tax withholding / forfeiture	Common Stock	32,498^{footnote F2}	$68.10	$2.21M
Footnote F1 (shares): Represents a grant of restricted stock units (RSUs) that are exempt from Section 16b-3 and are subject to vesting on the one year anniversary of the date of grant. RSUs represent a contingent right to receive one share of DexCom, Inc. Common Stock. Footnote F2 (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 RSUs and does not represent a sale by the Reporting Person.
Mar 8, 2026	Jereme M. Sylvain - Officer	Tax withholding / forfeiture	Common Stock	18,950^{footnote F2}	$68.10	$1.29M
Mar 8, 2026	Jereme M. Sylvain - Officer	Grant or award	Common Stock	48,774^{footnote F1}	$0.00	-
Footnote F1 (shares): Represents a grant of restricted stock units (RSUs) that are exempt from Section 16b-3 and are subject to vesting in three equal annual installments from the date of grant. RSUs represent a contingent right to receive one share of DexCom, Inc. Common Stock. Footnote F2 (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 RSUs and does not represent a sale by the Reporting Person.
Mar 8, 2026	Michael Jon Brown - Officer	Grant or award	Common Stock	39,019^{footnote F1}	$0.00	-
Mar 8, 2026	Michael Jon Brown - Officer	Tax withholding / forfeiture	Common Stock	23,325^{footnote F2}	$68.10	$1.59M
Footnote F1 (shares): Represents a grant of restricted stock units (RSUs) that are exempt from Section 16b-3 and are subject to vesting in three equal annual installments from the date of grant. RSUs represent a contingent right to receive one share of DexCom, Inc. Common Stock. Footnote F2 (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 RSUs and does not represent a sale by the Reporting Person.
Mar 8, 2026	Sadie Stern - Officer	Tax withholding / forfeiture	Common Stock	17,199^{footnote F2}	$68.10	$1.17M
Mar 8, 2026	Sadie Stern - Officer	Grant or award	Common Stock	39,019^{footnote F1}	$0.00	-
Footnote F1 (shares): Represents a grant of restricted stock units (RSUs) that are exempt from Section 16b-3 and are subject to vesting in three equal annual installments from the date of grant. RSUs represent a contingent right to receive one share of DexCom, Inc. Common Stock. Footnote F2 (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 RSUs and does not represent a sale by the Reporting Person.
Mar 8, 2026	Jacob Steven Leach - Officer	Tax withholding / forfeiture	Common Stock	19,757^{footnote F2}	$68.10	$1.35M
Mar 8, 2026	Jacob Steven Leach - Officer	Grant or award	Common Stock	104,516^{footnote F1}	$0.00	-
Footnote F1 (shares): Represents a grant of restricted stock units (RSUs) that are exempt from Section 16b-3 and are subject to vesting in three equal annual installments from the date of grant. RSUs represent a contingent right to receive one share of DexCom, Inc. Common Stock. Footnote F2 (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 RSUs and does not represent a sale by the Reporting Person.
Mar 8, 2026	Jon Coleman - Officer	Grant or award	Common Stock	43,897^{footnote F1}	$0.00	-
Footnote F1 (shares): Represents a grant of restricted stock units (RSUs) that are exempt from Section 16b-3 and are subject to vesting in three equal annual installments from the date of grant. RSUs represent a contingent right to receive one share of DexCom, Inc. Common Stock.
Feb 26, 2026	Albert Frederick Osterloh IV - Director	Grant or award	Common Stock	7,061^{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.
Feb 12, 2026	Bridgette P. Heller - Director	Open-market sale	Common Stock	1,012^{footnote F1}	$68.01	$69K
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.
Jan 29, 2026	Jacob Steven Leach - Officer	Grant or award	Common Stock	8,310^{footnote F1}	$0.00	-
Jan 29, 2026	Jacob Steven Leach - Officer	Tax withholding / forfeiture	Common Stock	3,058^{footnote F2}	$73.36	$224K
Footnote F1 (shares): Represents shares issued to the Reporting Person upon vesting of performance-based restricted stock units (PSUs) granted to the Reporting Person on March 8, 2023, resulting from achievement of performance conditions under the PSUs. Footnote F2 (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 PSUs and does not represent a sale by the Reporting Person.
Jan 29, 2026	Sadie Stern - Officer	Grant or award	Common Stock	7,123^{footnote F1}	$0.00	-
Jan 29, 2026	Sadie Stern - Officer	Tax withholding / forfeiture	Common Stock	2,656^{footnote F2}	$73.36	$195K
Footnote F1 (shares): Represents shares issued to the Reporting Person upon vesting of performance-based restricted stock units (PSUs) granted to the Reporting Person on March 8, 2023, resulting from achievement of performance conditions under the PSUs. Footnote F2 (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 PSUs and does not represent a sale by the Reporting Person.
Jan 29, 2026	Jereme M. Sylvain - Officer	Grant or award	Common Stock	7,123^{footnote F1}	$0.00	-
Jan 29, 2026	Jereme M. Sylvain - Officer	Tax withholding / forfeiture	Common Stock	2,652^{footnote F2}	$73.36	$195K
Footnote F1 (shares): Represents shares issued to the Reporting Person upon vesting of performance-based restricted stock units (PSUs) granted to the Reporting Person on March 8, 2023, resulting from achievement of performance conditions under the PSUs. Footnote F2 (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 PSUs and does not represent a sale by the Reporting Person.
Jan 29, 2026	Michael Jon Brown - Officer	Grant or award	Common Stock	7,123^{footnote F1}	$0.00	-
Jan 29, 2026	Michael Jon Brown - Officer	Tax withholding / forfeiture	Common Stock	2,653^{footnote F2}	$73.36	$195K
Footnote F1 (shares): Represents shares issued to the Reporting Person upon vesting of performance-based restricted stock units (PSUs) granted to the Reporting Person on March 8, 2023, resulting from achievement of performance conditions under the PSUs. Footnote F2 (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 PSUs and does not represent a sale by the Reporting Person.
Jan 29, 2026	Kevin R. Sayer - Officer	Grant or award	Common Stock	71,218^{footnote F1}	$0.00	-
Jan 29, 2026	Kevin R. Sayer - Officer	Tax withholding / forfeiture	Common Stock	34,257^{footnote F2}	$73.36	$2.51M
Footnote F1 (shares): Represents shares issued to the Reporting Person upon vesting of performance-based restricted stock units (PSUs) granted to the Reporting Person on March 9, 2023, resulting from achievement of performance conditions under the PSUs. Footnote F2 (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 PSUs and does not represent a sale by the Reporting Person.
Nov 14, 2025	Richard Alexander Collins - Director	Open-market sale	Common Stock	2,906^{footnote F1}	$59.05	$172K
Footnote F1 (shares): On August 7, 2025, the Richard A. Collins Revocable Trust (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.
Nov 12, 2025	Bridgette P. Heller - Director	Open-market sale	Common Stock	1,012^{footnote F1}	$58.07	$59K
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.

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	Brown Michael	Officer	1,700	$145K	View on EDGAR
Sep 28, 2026	Stern Sadie	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 30 September 2026. The full record for DXCM runs to 94 Form 4 filings, the earliest from 18 November 2024. 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

Related companies with recent insider activity

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

May 28, 2026

Renee D. Gala - 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 22, 2026

Jacob Steven Leach - Officer

Tax withholding / forfeiture

Common Stock

1,451^{footnote F1}

$71.90

$104K

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.

May 22, 2026

Michael Jon Brown - Officer

Tax withholding / forfeiture

Common Stock

1,451^{footnote F1}

$71.90

$104K

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.

May 22, 2026

Jereme M. Sylvain - Officer

Tax withholding / forfeiture

Common Stock

1,451^{footnote F1}

$71.90

$104K

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.

May 22, 2026

Sadie Stern - Officer

Tax withholding / forfeiture

Common Stock

1,451^{footnote F1}

$71.90

$104K

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.

May 22, 2026

Jon Coleman - Officer

Tax withholding / forfeiture

Common Stock

7,362^{footnote F1}

$71.90

$529K

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.

May 21, 2026

Kevin R. Sayer - Officer

Open-market sale

Common Stock

26,759^{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.

May 15, 2026

Michael Jon Brown - Officer

Open-market sale

Common Stock

1,700^{footnote F1}

$59.91

$102K

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.

May 12, 2026

Bridgette P. Heller - Director

Open-market sale

Common Stock

1,012^{footnote F1}

$60.01

$61K

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.

May 8, 2026

Nicholas Augustinos - Director

Gift

Common Stock

5,046^{footnote F1}

$0.00

May 8, 2026

Nicholas Augustinos - Director

Gift

Common Stock

5,046^{footnote F1}

$0.00

Footnote F1 (shares): Shares were transferred from direct ownership to ownership under the Kirschner/Augustinos Revocable Trust, upon vesting of previously awarded restricted stock units.

May 8, 2026

Richard Alexander Collins - Director

Gift

Common Stock

5,074^{footnote F1}

$0.00

May 8, 2026

Richard Alexander Collins - Director

Gift

Common Stock

5,074^{footnote F1}

$0.00

Footnote F1 (shares): Shares were transferred from direct ownership to ownership under the Richard A. Collins Revocable Trust upon vesting of previously awarded restricted stock units.

May 8, 2026

Mark G. Foletta - Director

Gift

Common Stock

5,731^{footnote F1}

$0.00

May 8, 2026

Mark G. Foletta - Director

Gift

Common Stock

5,731^{footnote F1}

$0.00

Footnote F1 (shares): Shares were transferred from direct ownership to ownership under the Mark G. and Mary E. Foletta, TTEE's for the Foletta Family Trust DTD 1/30/15, upon vesting of previously awarded restricted stock units.

May 8, 2026

Steven R. Altman - Director

Gift

Common Stock

5,037^{footnote F1}

$0.00

May 8, 2026

Steven R. Altman - Director

Gift

Common Stock

5,037^{footnote F1}

$0.00

Footnote F1 (shares): 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.

Apr 15, 2026

Michael Jon Brown - Officer

Open-market sale

Common Stock

1,700^{footnote F1}

$63.04

$107K

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.

Mar 16, 2026

Michael Jon Brown - Officer

Open-market sale

Common Stock

1,700^{footnote F1}

$64.85

$110K

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.

Mar 8, 2026

Kevin R. Sayer - Officer

Grant or award

Common Stock

32,749^{footnote F1}

$0.00

Mar 8, 2026

Kevin R. Sayer - Officer

Tax withholding / forfeiture

Common Stock

32,498^{footnote F2}

$68.10

$2.21M

Footnote F1 (shares): Represents a grant of restricted stock units (RSUs) that are exempt from Section 16b-3 and are subject to vesting on the one year anniversary of the date of grant. RSUs represent a contingent right to receive one share of DexCom, Inc. Common Stock.
Footnote F2 (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 RSUs and does not represent a sale by the Reporting Person.

Mar 8, 2026

Jereme M. Sylvain - Officer

Tax withholding / forfeiture

Common Stock

18,950^{footnote F2}

$68.10

$1.29M

Mar 8, 2026

Jereme M. Sylvain - Officer

Grant or award

Common Stock

48,774^{footnote F1}

$0.00

Footnote F1 (shares): Represents a grant of restricted stock units (RSUs) that are exempt from Section 16b-3 and are subject to vesting in three equal annual installments from the date of grant. RSUs represent a contingent right to receive one share of DexCom, Inc. Common Stock.
Footnote F2 (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 RSUs and does not represent a sale by the Reporting Person.

Mar 8, 2026

Michael Jon Brown - Officer

Grant or award

Common Stock

39,019^{footnote F1}

$0.00

Mar 8, 2026

Michael Jon Brown - Officer

Tax withholding / forfeiture

Common Stock

23,325^{footnote F2}

$68.10

$1.59M

Footnote F1 (shares): Represents a grant of restricted stock units (RSUs) that are exempt from Section 16b-3 and are subject to vesting in three equal annual installments from the date of grant. RSUs represent a contingent right to receive one share of DexCom, Inc. Common Stock.
Footnote F2 (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 RSUs and does not represent a sale by the Reporting Person.

Mar 8, 2026

Sadie Stern - Officer

Tax withholding / forfeiture

Common Stock

17,199^{footnote F2}

$68.10

$1.17M

Mar 8, 2026

Sadie Stern - Officer

Grant or award

Common Stock

39,019^{footnote F1}

$0.00

Footnote F1 (shares): Represents a grant of restricted stock units (RSUs) that are exempt from Section 16b-3 and are subject to vesting in three equal annual installments from the date of grant. RSUs represent a contingent right to receive one share of DexCom, Inc. Common Stock.
Footnote F2 (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 RSUs and does not represent a sale by the Reporting Person.

Mar 8, 2026

Jacob Steven Leach - Officer

Tax withholding / forfeiture

Common Stock

19,757^{footnote F2}

$68.10

$1.35M

Mar 8, 2026

Jacob Steven Leach - Officer

Grant or award

Common Stock

104,516^{footnote F1}

$0.00

Footnote F1 (shares): Represents a grant of restricted stock units (RSUs) that are exempt from Section 16b-3 and are subject to vesting in three equal annual installments from the date of grant. RSUs represent a contingent right to receive one share of DexCom, Inc. Common Stock.
Footnote F2 (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 RSUs and does not represent a sale by the Reporting Person.

Mar 8, 2026

Jon Coleman - Officer

Grant or award

Common Stock

43,897^{footnote F1}

$0.00

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

Feb 26, 2026

Albert Frederick Osterloh IV - Director

Grant or award

Common Stock

7,061^{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.

Feb 12, 2026

Bridgette P. Heller - Director

Open-market sale

Common Stock

1,012^{footnote F1}

$68.01

$69K

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.

Jan 29, 2026

Jacob Steven Leach - Officer

Grant or award

Common Stock

8,310^{footnote F1}

$0.00

Jan 29, 2026

Jacob Steven Leach - Officer

Tax withholding / forfeiture

Common Stock

3,058^{footnote F2}

$73.36

$224K

Footnote F1 (shares): Represents shares issued to the Reporting Person upon vesting of performance-based restricted stock units (PSUs) granted to the Reporting Person on March 8, 2023, resulting from achievement of performance conditions under the PSUs.
Footnote F2 (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 PSUs and does not represent a sale by the Reporting Person.

Jan 29, 2026

Sadie Stern - Officer

Grant or award

Common Stock

7,123^{footnote F1}

$0.00

Jan 29, 2026

Sadie Stern - Officer

Tax withholding / forfeiture

Common Stock

2,656^{footnote F2}

$73.36

$195K

Footnote F1 (shares): Represents shares issued to the Reporting Person upon vesting of performance-based restricted stock units (PSUs) granted to the Reporting Person on March 8, 2023, resulting from achievement of performance conditions under the PSUs.
Footnote F2 (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 PSUs and does not represent a sale by the Reporting Person.

Jan 29, 2026

Jereme M. Sylvain - Officer

Grant or award

Common Stock

7,123^{footnote F1}

$0.00

Jan 29, 2026

Jereme M. Sylvain - Officer

Tax withholding / forfeiture

Common Stock

2,652^{footnote F2}

$73.36

$195K

Footnote F1 (shares): Represents shares issued to the Reporting Person upon vesting of performance-based restricted stock units (PSUs) granted to the Reporting Person on March 8, 2023, resulting from achievement of performance conditions under the PSUs.
Footnote F2 (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 PSUs and does not represent a sale by the Reporting Person.

Jan 29, 2026

Michael Jon Brown - Officer

Grant or award

Common Stock

7,123^{footnote F1}

$0.00

Jan 29, 2026

Michael Jon Brown - Officer

Tax withholding / forfeiture

Common Stock

2,653^{footnote F2}

$73.36

$195K

Footnote F1 (shares): Represents shares issued to the Reporting Person upon vesting of performance-based restricted stock units (PSUs) granted to the Reporting Person on March 8, 2023, resulting from achievement of performance conditions under the PSUs.
Footnote F2 (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 PSUs and does not represent a sale by the Reporting Person.

Jan 29, 2026

Kevin R. Sayer - Officer

Grant or award

Common Stock

71,218^{footnote F1}

$0.00

Jan 29, 2026

Kevin R. Sayer - Officer

Tax withholding / forfeiture

Common Stock

34,257^{footnote F2}

$73.36

$2.51M

Footnote F1 (shares): Represents shares issued to the Reporting Person upon vesting of performance-based restricted stock units (PSUs) granted to the Reporting Person on March 9, 2023, resulting from achievement of performance conditions under the PSUs.
Footnote F2 (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 PSUs and does not represent a sale by the Reporting Person.

Nov 14, 2025

Richard Alexander Collins - Director

Open-market sale

Common Stock

2,906^{footnote F1}

$59.05

$172K

Footnote F1 (shares): On August 7, 2025, the Richard A. Collins Revocable Trust (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.

Nov 12, 2025

Bridgette P. Heller - Director

Open-market sale

Common Stock

1,012^{footnote F1}

$58.07

$59K

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.

Filed

Filer

Relationship

Market value

Notice

Oct 15, 2026

Brown Michael

Officer

1,700

$145K

View on EDGAR

Sep 28, 2026

Stern Sadie

Officer

2,565