X0306 4 2021-04-26 0 0001093557 DEXCOM INC DXCM 0001692785 Murphy Patrick Michael 6340 SEQUENCE DRIVE SAN DIEGO CA 92121 0 1 0 0 EVP, Chief Legal Officer Common Stock 2021-04-26 4 S 0 500 415.83 D 19241 D On August 28, 2020, Mr. Murphy adopted a 10b5-1 Plan. This 10b5-1 Plan allows the orderly disposition of shares owned by Mr. Murphy. The shares set forth above were sold pursuant to the 10b5-1 Plan. Included in this number are 15,413 unvested restricted stock units, 5,634 of which were granted on March 8, 2021 and shall vest through March 8, 2024, 5,874 of which were granted on March 8, 2020 and shall vest through March 8, 2023, and 3,905 of which were granted on March 8, 2019 and shall vest through March 8, 2022. By: Jereme Sylvain For: Patrick M. Murphy 2021-04-27