DexCom, Inc. announced on September 10, 2026, that the company’s Board of Directors has promoted Jereme Sylvain to the role of Executive Vice President and Chief Operating Officer (COO). Mr. Sylvain, who has served as the company’s Chief Financial Officer since 2021, will assume oversight of DexCom’s global operations and quality teams, effective September 14, 2026.

In connection with this promotion, the company disclosed the terms of an offer letter entered into on September 11, 2026. The agreement stipulates an annual base salary of $767,000 and an annual target bonus opportunity equal to 75% of his base salary. Mr. Sylvain remains eligible to receive annual equity awards under the company’s Amended and Restated 2015 Equity Incentive Plan and will participate in the company’s Amended and Restated Severance & Change in Control Plan as an executive officer.

Mr. Sylvain joined DexCom in 2018 and has led the company’s finance leadership team since 2021. In the new capacity, he is tasked with driving greater alignment, speed, and accountability across the organization as it executes on its growth and operational excellence goals. The appointment was announced in a press release furnished as Exhibit 99.1 to the filing.