Dexcom CFO Sylvain has 1,451 shares withheld for taxes

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, Inc. (DXCM) reported that EVP, COO & CFO Jereme M. Sylvain had 1,451 common shares withheld on November 8, 2026, to cover tax withholding and remittance obligations connected with net settlement of restricted stock units; the footnote says this was not a sale. His direct holdings after the transaction were 145,377 shares, including 84,244 unvested restricted stock units.

Insider Trade Summary

Tax Withholding: 1,451 shares

Tax Withholding 1 txn

Insider Sylvain Jereme M

Role EVP, COO & CFO

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

Holdings After Transaction: Common Stock — 145,377 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 84,244 unvested restricted stock units, 48,774 of which were granted on March 8, 2026 and shall vest through March 8, 2029, 23,937 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 8,684 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 after transaction: 145,377 shares +1 more

4 metrics

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

Reported price per share $79.41 per share Shares withheld on November 8, 2026

Direct holdings after transaction 145,377 shares After the November 8, 2026 transaction

Unvested restricted stock units 84,244 restricted stock units Included in the reported direct 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

"84,244 unvested 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

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

How many DXCM shares were withheld for taxes?

EVP, COO & CFO Jereme M. Sylvain had 1,451 shares withheld on November 8, 2026, for tax withholding and remittance obligations connected with net settlement of restricted stock units. The footnote says the withholding was not a sale; the reported price was $79.41 per share.

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^*

Sylvain Jereme M

(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, COO & CFO

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	145,377(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 84,244 unvested restricted stock units, 48,774 of which were granted on March 8, 2026 and shall vest through March 8, 2029, 23,937 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 8,684 of which were granted on March 8, 2024 and shall vest through March 8, 2027.

Remarks:

	/s/ Christophe Cantenot, as Attorney-in-Fact for Jereme M. Sylvain	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)