DXCM Form 144: Proposed sale of 60,730 shares

DexCom affiliate reported proposed sales of Common Stock on a Form 144.

Rhea-AI Filing Summary

DexCom affiliate reported proposed sales of Common Stock on a Form 144. The filing lists a brokerage entry showing 60,730.12 shares with a broker reference to Fidelity Brokerage Services and date 05/12/2026, and a separate entry showing 68,826.12 shares tied to 02/12/2026. The filing references restricted stock vesting and compensation as the source for securities.

Key Figures

Proposed sale quantity: 60,730.12 shares Separate entry quantity: 68,826.12 shares Broker-dealer: Fidelity Brokerage Services LLC +1 more

4 metrics

Proposed sale quantity 60,730.12 shares broker entry dated <date>05/12/2026</date>

Separate entry quantity 68,826.12 shares entry dated <date>02/12/2026</date>

Broker-dealer Fidelity Brokerage Services LLC listed with address 900 Salem Street, Smithfield RI

Form type Form 144 Notice of proposed sale by affiliate

Key Terms

Form 144, Restricted Stock Vesting, Brokerage, Compensation

4 terms

Form 144 regulatory

"Filer Information ... 144: Filer Information"

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 Vesting financial

"Securities To Be Sold ... Restricted Stock Vesting"

Restricted stock vesting is the timetable and conditions under which shares granted to employees or insiders become fully owned and can be sold, typically requiring continued work or meeting performance goals. It matters to investors because large blocks of shares can become tradable at once, which can change share supply and price, and because vesting aligns insiders’ incentives with the company’s long‑term performance—think of it like a timed unlock that both rewards and locks in key people.

Brokerage market

"Fidelity Brokerage Services LLC 900 Salem Street Smithfield RI"

A brokerage is a firm or online platform that carries out buy and sell orders for stocks, bonds and other investments on behalf of clients, and typically holds accounts, provides market data, trading tools and optional services such as research or margin lending. It matters to investors because the brokerage’s fees, speed of execution, available markets and safety of client assets directly affect investment costs, potential returns and how easily you can act on opportunities—think of it as the vehicle and driver that get your money where it needs to go.

Compensation financial

"Securities To Be Sold ... Compensation"

FAQ

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

What does the DXCM Form 144 show?

The Form 144 shows proposed sales of Common Stock: 60,730.12 shares (broker entry dated 05/12/2026) and a separate entry of 68,826.12 shares (dated 02/12/2026). The filing lists restricted stock vesting as the securities' source.

Who is the broker or dealer listed on the DXCM Form 144?

The filing names Fidelity Brokerage Services LLC with an address at 900 Salem Street, Smithfield, RI. This broker reference appears alongside the 60,730.12 share entry dated 05/12/2026 in the filing.

What is the identified source of the securities in the DXCM filing?

The filing identifies the securities' source as Restricted Stock Vesting and labels the transaction purpose as Compensation, indicating the shares arose from equity compensation arrangements documented in the Form 144 entries.

Does the Form 144 state whether the company receives proceeds?

The excerpt links the securities to restricted stock vesting and lists broker details; it does not state the company's receipt of proceeds. The filing entries focus on the proposed sale quantities and compensation origin of the shares.

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

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Accepted by SEC EDGAR 05/12/2026 - 09:47 AM 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	0001485616
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	8582000200
Name of Person for Whose Account the Securities are To Be Sold	Heller Bridgette P
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	Director

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	Fidelity Brokerage Services LLC 900 Salem Street Smithfield RI 02917	1012	60730.12	385872977	05/12/2026	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	09/29/2021	Restricted Stock Vesting	Issuer			1012	09/29/2021	Compensation

* 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
Bridgette P. Heller 6340 Sequence Drive San Diego CA 92121	Common	02/12/2026	1012	68826.12

144: Remarks and Signature

Remarks
Date of Notice	05/12/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	08/14/2025
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/ Gary Redman, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Bridgette P. Heller
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)