DEXCOM INC — Director's Dealing 2025

Mar 12, 2025

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: DEXCOM INC (DXCM)
CIK: 0001093557
Period of Report: 2025-03-08

Reporting Person: Leach Jacob Steven (EVP, Chief Operating Officer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2025-03-08	Common Stock	A	35906	—	Acquired	304775	Direct
2025-03-08	Common Stock	A	22798	—	Acquired	327573	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	47296	Indirect

Footnotes

F1: Represents a grant of restricted stock units that are exempt from Section 16b-3 and are subject to vesting in three equal annual installments from the date of grant. Restricted stock units represent a contingent right to receive one share of DexCom, Inc. Common Stock.

F2: Represents a grant of restricted stock units that are exempt from Section 16b-3 and are subject to vesting from the date of grant as follows: 1/2 shall vest on March 8, 2026, 1/8 shall vest on May 22, 2026, 1/8 shall vest on August 22, 2026, 1/8 shall vest on November 8, 2026, and the remaining balance shall vest on March 8, 2027. Restricted stock units represent a contingent right to receive one share of DexCom, Inc. Common Stock.

F3: Included in this number are 84,537 unvested restricted stock units, 35,906 of which were granted on March 8, 2025 and shall vest through March 8, 2028, 22,798 of which were granted on March 8, 2025 and shall vest through March 8, 2027, 17,368 of which were granted on March 8, 2024 and shall vest through March 8, 2027, 8,465 of which were granted on March 8, 2023 and shall vest through March 8, 2026, and 225 shares acquired under the Issuer's 2015 Employee Stock Purchase Plan on February 28, 2025.

F4: Shares are held by the Gregg Family Grandchildren's Trust UAD 12/30/2010, with respect to which the reporting person's spouse is a trustee.