X0306 4 2020-03-08 0 0001093557 DEXCOM INC DXCM 0001323190 Balo Andrew K 6340 SEQUENCE DRIVE SAN DIEGO CA 92121 0 1 0 0 * Common Stock 2020-03-08 4 A 0 8811 0.001 A 66749 D Represents a grant of restricted stock units that are exempt from Section 16 b-3 and are subject to vesting in three equal annual installments from the date of grant. Share units represent a contingent right to receive one share of DexCom, Inc. Common Stock. Included in this number are 31,636 unvested restricted stock units, 8,811 of which were granted on March 8, 2020 and shall vest through March 8, 2023, 9,991 of which were granted on March 8, 2019 and shall vest through March 8, 2022, and 12,834 of which were granted on March 8, 2018 and shall vest through March 8, 2021. *EVP Regulatory Strategy Clinical Affairs and Strategic Partnership Development By: Jereme Sylvain For: Andrew K Balo 2020-03-10