DEXCOM INC

We identified the employee with compensation at the median of the compensation of all of our employees (“median employee”) by considering our employee population as of December 31, 2024 (“employee population determination date”) as summarized below. We identified the median employee for all our employees because of the global growth of our employment population, which we believed could result in a significant change to our CEO pay ratio results. The methodology we used to determine the median employee for 2024 is described below and is substantially the same methodology that we previously used to determine the median employee.

For 2024, we considered all individuals who were employed by us on a world-wide basis (including our consolidated subsidiaries) on the employee population determination date, other than our CEO, whether employed on a full-time, part-time, seasonal or temporary basis, as applicable. We did not include any contractors or other non-employee workers in our employee population.

To identify our median employee, we chose to use a consistently-applied compensation measure, which we selected as base salary for 2024. For employees paid other than in U.S. dollars, we converted their compensation to U.S. dollars using the applicable exchange rates in effect on December 31, 2024. For permanent employees hired during 2024, we annualized their base salary or wages as if they had been employed for the entire measurement period. We did not make any cost-of-living adjustment.

Our employee population as of our determination date consisted of approximately 10,300 individuals in the United States and in our international locations who were employed by us on a full-time, part-time, or seasonal basis, including employees on a leave of absence. Contractors and other non-employees were not included in our employee population.

Using this methodology, we identified the individual at the median of our employee population. We then calculated the annual total compensation for this individual using the same methodology we use to calculate the amount reported for our CEO in the “Total” column of the 2024 Summary Compensation Table as set forth in this Proxy Statement.

Because SEC rules for identifying the median of the annual total compensation of all employees allow companies to adopt a variety of methodologies, apply certain exclusions, and make reasonable estimates and assumptions that reflect their employee population and compensation practices, the pay ratio reported by other companies may not be comparable to our pay ratio, as other companies have different employee populations and compensation practices and may have used different methodologies, exclusions, estimates and assumptions in calculating their pay ratios. As explained by the SEC when it adopted these rules, the rule was not designed to facilitate comparisons of pay ratios among different companies, even companies within the same industry, but rather to allow stockholders to better understand and assess each particular company’s compensation practices and pay ratio disclosures.