Dexcom withholds 1,451 Sadie Stern shares for taxes

Sadie Stern’s reported direct holdings after the withholding were 119,462 shares, including 69,053 unvested restricted stock units.

Available on EDGAR 11/10/2026 - 04:35 PM EST Accepted by SEC EDGAR 11/10/2026 - 04:35 PM EST Learn about SEC filing dates

Rhea-AI Filing Summary

Dexcom (DXCM) reported that 1,451 shares were withheld from Sadie Stern, its EVP Chief People & Culture Off, on November 8, 2026, to cover tax withholding and remittance obligations connected with the net settlement of restricted stock units. The reported price per share was $79.41; the withholding does not represent a sale. Stern’s direct holdings following the transaction were 119,462 shares, including 69,053 unvested restricted stock units.

Insider Trade Summary

Tax Withholding: 1,451 shares

Tax Withholding 1 txn

Insider Stern Sadie

Role EVP Chief People & Culture Off

Type	Security	Shares	Price	Value
Tax Withholding	Common Stock F1, F2	1,451	$79.41	$115K

Holdings After Transaction: Common Stock — 119,462 shares (Direct)

Footnotes (2)

1. F1. 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.
2. F2. Included in this number are 69,053 unvested restricted stock units, 39,019 of which were granted on March 8, 2026 and shall vest through March 8, 2029, 19,948 of which were granted on March 8, 2025 and shall vest through March 8, 2028, 2,849 of which were granted on March 8, 2025 and shall vest through March 8, 2027, and 7,237 of which were granted on March 8, 2024 and shall vest through March 8, 2027.

Key Figures

Shares withheld: 1,451 shares Reported price per share: $79.41 per share Direct holdings following transaction: 119,462 shares +1 more

4 metrics

Shares withheld 1,451 shares November 8, 2026; to cover tax withholding and remittance obligations

Reported price per share $79.41 per share Transaction dated November 8, 2026

Direct holdings following transaction 119,462 shares Following the November 8, 2026 transaction

Unvested restricted stock units included in holdings 69,053 restricted stock units Included in the reported post-transaction holdings

Key Terms

net settlement, restricted stock units, tax withholding and remittance obligations

3 terms

net settlement financial

"in connection with the net settlement of restricted stock units"

restricted stock units financial

"net settlement of restricted stock units"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

tax withholding and remittance obligations financial

"to cover tax withholding and remittance obligations"

FAQ

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How many DXCM shares were withheld from Sadie Stern?

Dexcom withheld 1,451 shares from Sadie Stern on November 8, 2026, at a reported $79.41 per share to cover tax withholding and remittance obligations connected with net settlement of restricted stock units. The disclosure says this does not represent a sale; no Rule 10b5-1 plan is reported.

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

Form 4 Insider Transactions: What Each Field Means →

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SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Stern Sadie

(Last) (First) (Middle)

6340 SEQUENCE DRIVE

(Street)

SAN DIEGO CALIFORNIA 92121

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
DEXCOM INC [ DXCM ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	EVP Chief People & Culture Off

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
11/08/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	11/08/2026		F		1,451(1)	D	$79.41	119,462(2)	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. 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.

2. Included in this number are 69,053 unvested restricted stock units, 39,019 of which were granted on March 8, 2026 and shall vest through March 8, 2029, 19,948 of which were granted on March 8, 2025 and shall vest through March 8, 2028, 2,849 of which were granted on March 8, 2025 and shall vest through March 8, 2027, and 7,237 of which were granted on March 8, 2024 and shall vest through March 8, 2027.

Remarks:

	/s/ Christophe Cantenot, as Attorney-in-Fact for Sadie Stern	11/10/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)