X0306 4 2020-03-08 0 0001093557 DEXCOM INC DXCM 0001700255 Leach Jacob Steven 6340 SEQUENCE DRIVE SAN DIEGO CA 92121 0 1 0 0 EVP Chief Technology Officer Common Stock 2020-03-08 4 A 0 11748 0.001 A 134407 D Common Stock 11824 I Family Holdings 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 31,770 unvested restricted stock units, 11,748 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 10,031 of which were granted on March 8, 2018 and shall vest through March 8, 2021. 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. By: Jereme Sylvain For: Jacob S Leach 2020-03-10