DXCM insider plans 1,700-share stock sale filing

Michael Brown filed a Form 144 to potentially sell 1,700 shares of DXCM common stock through Morgan Stanley Smith Barney LLC Executive Financial Services, with an estimated aggregate market value of $156,281.00 as of 08/14/2026.

Rhea-AI Filing Summary

Michael Brown filed a Form 144 to potentially sell 1,700 shares of DXCM common stock through Morgan Stanley Smith Barney LLC Executive Financial Services, with an estimated aggregate market value of $156,281.00 as of 08/14/2026. The filing also lists prior sales of 1,700 shares each on 05/15/2026 for $101,847.00, on 06/15/2026 for $128,435.00, and on 07/15/2026 for $126,514.00.

Key Figures

Planned shares to be sold: 1,700 shares Planned sale value: $156,281.00 Past sale 1: 1,700 shares for $101,847.00 +3 more

6 metrics

Planned shares to be sold 1,700 shares Common stock indicated in Form 144 securities information

Planned sale value $156,281.00 Aggregate market value for 1,700 shares as of 08/14/2026

Past sale 1 1,700 shares for $101,847.00 Common stock sold on 05/15/2026

Past sale 2 1,700 shares for $128,435.00 Common stock sold on 06/15/2026

Past sale 3 1,700 shares for $126,514.00 Common stock sold on 07/15/2026

Acquisition date of restricted stock 03/08/2026 Restricted Stock from issuer referenced in securities-to-be-sold section

Key Terms

Form 144, Restricted Stock, aggregate market value, Executive Financial Services

4 terms

Form 144 regulatory

"Michael Brown filed a Form 144 to potentially sell 1,700 shares"

Form 144 is a document that investors must file with the government when they plan to sell a large number of shares of a company's stock. It helps ensure transparency so everyone knows how many shares are being sold and when, which can impact the stock's price.

Restricted Stock financial

"Common | 03/08/2026 | Restricted Stock | ISSUER"

Shares granted to an individual that carry limits on transfer or sale until certain conditions are met, such as staying with the company for a set time or hitting performance targets. Think of them as a locked gift that gradually opens; for investors they matter because they affect how many shares may enter the market later, signal management incentives and potential dilution, and reveal confidence in future company performance.

aggregate market value financial

"with an estimated aggregate market value of $156,281.00 as of 08/14/2026"

Aggregate market value is the combined price you would pay to buy all outstanding shares of a company or all companies in a group at current market prices — essentially the sum of each stock’s market capitalization. It matters to investors because it shows the overall size and weight of an investment or sector (like the total cost to buy every piece of a puzzle), helps compare scale across companies or markets, and influences index composition and risk exposure.

Executive Financial Services financial

"Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What stock sale is Michael Brown planning for DXCM under this Form 144?

Michael Brown plans a potential sale of 1,700 shares of DXCM common stock, with an estimated aggregate market value of $156,281.00 as of 08/14/2026, through Morgan Stanley Smith Barney LLC Executive Financial Services.

What is the estimated value of Michael Brown’s planned DXCM share sale?

The planned sale covers 1,700 DXCM shares with an estimated aggregate market value of $156,281.00 as of 08/14/2026, according to the Form 144 securities information section.

Which broker is handling Michael Brown’s planned DXCM stock sale?

The planned DXCM stock sale is to be handled by Morgan Stanley Smith Barney LLC Executive Financial Services, located at 1 New York Plaza, 8th Floor, New York, NY 10004, as listed in the securities information.

What prior DXCM stock sales by Michael Brown are disclosed in this Form 144?

The filing lists three prior sales of 1,700 DXCM shares each: on 05/15/2026 for $101,847.00, on 06/15/2026 for $128,435.00, and on 07/15/2026 for $126,514.00.

What type of DXCM securities does Michael Brown’s Form 144 relate to?

The Form 144 relates to common stock originally acquired as Restricted Stock from the issuer on 03/08/2026, with 1,700 shares indicated in the securities-to-be-sold section.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 08/14/2026 - 04:22 PM EDT Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001899922
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	DEXCOM, INC.
SEC File Number	000-51222
Address of Issuer	6340 Sequence Drive San Diego CALIFORNIA 92121
Phone	(858) 200-0200
Name of Person for Whose Account the Securities are To Be Sold	MICHAEL BROWN
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Officer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004	1700	156281.00	377360765	08/14/2026	NASDAQ

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	03/08/2026	Restricted Stock	ISSUER			1700	03/08/2026	Not Applicable

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
MICHAEL BROWN 6340 Sequence Drive San Diego CA 92121	Common	07/15/2026	1700	126514.00
MICHAEL BROWN 6340 Sequence Drive San Diego CA 92121	Common	06/15/2026	1700	128435.00
MICHAEL BROWN 6340 Sequence Drive San Diego CA 92121	Common	05/15/2026	1700	101847.00

144: Remarks and Signature

Remarks
Date of Notice	08/14/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	11/26/2025
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/ Michael Jon Brown
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)