X0609 4 2026-05-20 0 0001438133 TANDEM DIABETES CARE INC TNDM 0001201585 ROBERTSON REBECCA B false 12400 HIGH BLUFF DRIVE SAN DIEGO CA 92130 1 0 0 0 0 Common Stock 2026-05-21 4 M 0 8759 0 A 22542 D Restricted Stock Unit 2026-05-20 4 A 0 10220 0 A Common Stock 10220 10220 D Restricted Stock Unit 2026-05-21 4 M 0 8759 0 D Common Stock 8759 0 D Each restricted stock units (RSU) represents a contingent right to receive either one share of the Issuers common stock or cash in lieu thereof, at the Issuers discretion, in accordance with the terms of the Tandem Diabetes Care, Inc. 2023 Long-Term Incentive Plan, as amended, and agreements related thereto (the 2023 Plan). Such RSUs were granted to the Reporting Person on May 20, 2026, and will vest on the one-year anniversary thereof, subject to the terms of the 2023 Plan. On May 21, 2025, the Reporting Person was granted 8,759 RSUs, all of which vested and converted into shares of the Issuers common stock on the one-year anniversary thereof in accordance with the 2023 Plan. Ex. 24: Power of Attorney /s/ Jerilyn Laskie, Attorney-in-Fact for Rebecca B. Robertson 2026-05-22