On March 11, 2022, Douglas A. Roeder, notified Tandem Diabetes Care, Inc. of his decision not to stand for re-election at the Company's 2022 Annual Meeting of Stockholders (the “2022 Annual Meeting”). Mr. Roeder has served on the Board since May 2009 and is currently serving as a Class III director with a term that will end concurrent with the 2022 Annual Meeting. The decision by Mr. Roeder not to stand for re-election did not involve a disagreement with the Company on any matter relating to the Company's operations, policies or practices.