Stern Sadie 4

4 · DEXCOM INC · Filed Mar 10, 2026

AI-generated summary of this filing

Updated Mar 10, 2026

DexCom (DXCM) EVP Sadie Stern Receives RSU Award; Tax Withholding

What Happened

Sadie Stern, EVP and Chief Human Resources Officer of DexCom (DXCM), was granted 39,019 restricted stock units (RSUs) on March 8, 2026 (reported March 10, 2026). The RSU grant is recorded as an acquisition (code A) and carries no immediate cash cost to Stern.
In connection with the net settlement/tax withholding for RSUs, 17,199 shares were withheld at an indicated price of $68.10 per share to cover tax liabilities, a withholding value of approximately $1,171,252 (reported as code F). The filing clarifies the withheld shares do not represent an open-market sale by the reporting person.

Key Details

Transaction date: March 8, 2026; Filing date: March 10, 2026 (appears timely).
Grant: 39,019 RSUs (acquisition at $0.00). Withholding: 17,199 shares at $68.10, value ≈ $1,171,252.
Shares owned after transaction: Not explicitly stated in the excerpt; filing notes 77,603 unvested RSUs in total.
Notable footnotes:
- F1: RSUs are exempt from Section 16b-3 and vest in three equal annual installments from grant; each RSU converts to one share upon vesting.
- F2: The 17,199-shares item represents shares withheld to cover tax withholding and is not a sale by the reporting person.
- F3: Breakdown of unvested RSUs (77,603 total): 39,019 granted 3/8/2026 vest through 3/8/2029; 19,948 granted 3/8/2025 vest through 3/8/2028; 11,399 granted 3/8/2025 vest through 3/8/2027; 7,237 granted 3/8/2024 vest through 3/8/2027.

Context

RSU grants are a common form of executive compensation; they convert to shares only as they vest, so this award is a future entitlement rather than an immediate share purchase.
Share withholding to satisfy tax obligations is routine and should not be interpreted the same as an open-market sale — it’s an administrative step to remit taxes on the award.

Form 4

Period: 2026-03-08

EVP, Chief HR Officer

Transactions

Award
Common Stock
[F1]
2026-03-08+39,019→ 148,709 total
Tax Payment
Common Stock
[F2][F3]
2026-03-08$68.10/sh−17,199$1,171,252→ 131,510 total

Footnotes (3)

[F1]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.
[F2]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.
[F3]Included in this number are 77,603 unvested RSUs, 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, 11,399 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.

Signature

/s/ Jereme M. Sylvain, as Attorney-in-Fact for Sadie Stern|2026-03-10

1 file