DEXCOM INC (DXCM) · Insider Trading (Form 4) SEC Filing

=== SEC Form 4 — Statement of Changes in Beneficial Ownership === Document Type: 4 Period of Report: 2026-06-03 10b5-1 Pre-arranged Plan: Yes --- Issuer --- Name: DEXCOM INC (DXCM) CIK: 0001093557 --- Reporting Owner --- Name: Coleman Jon CIK: 0001442689 Role: Officer (EVP, Chief Commercial Officer) --- Non-Derivative Transactions --- [Transaction #1] Security: Common Stock Date: 2026-06-03 | Code: S (Open market sale) Shares: -4,912 | Price: $73.00 Total Value: $358,576.00 Shares Owned After: 100,361 | Ownership: D (Direct) Footnotes: [F1] On March 4, 2026, Mr. Coleman adopted a 10b5-1 Plan. This 10b5-1 Plan allows the orderly disposition of shares owned by Mr. Coleman. The shares set forth above were sold pursuant to the 10b5- 1 Plan. [Transaction #2] Security: Common Stock Date: 2026-06-04 | Code: S (Open market sale) Shares: -4,911 | Price: $74.13 Total Value: $364,052.43 Shares Owned After: 95,450 | Ownership: D (Direct) Footnotes: [F1] On March 4, 2026, Mr. Coleman adopted a 10b5-1 Plan. This 10b5-1 Plan allows the orderly disposition of shares owned by Mr. Coleman. The shares set forth above were sold pursuant to the 10b5- 1 Plan. [F2] Included in this number are 95,450 unvested restricted stock units, 43,897 of which were granted on March 8, 2026 and shall vest through March 8, 2029, and 51,553 of which were granted on May 22, 2025 and shall vest through May 22, 2029. --- Footnotes (Complete Index) --- F1: On March 4, 2026, Mr. Coleman adopted a 10b5-1 Plan. This 10b5-1 Plan allows the orderly disposition of shares owned by Mr. Coleman. The shares set forth above were sold pursuant to the 10b5- 1 Plan. F2: Included in this number are 95,450 unvested restricted stock units, 43,897 of which were granted on March 8, 2026 and shall vest through March 8, 2029, and 51,553 of which were granted on May 22, 2025 and shall vest through May 22, 2029. --- Signature --- /s/ /s/ Jereme M. Sylvain, as Attorney-in-Fact for Jon Coleman (2026-06-05)