X0508 4 2025-11-28 0 0001388658 iRhythm Technologies, Inc. IRTC 0001929535 Rosenbaum Marc Wade C/O IRHYTHM TECHNOLOGIES, INC. 699 8TH STREET, #600 SAN FRANCISCO CA 94103 0 1 0 0 Chief Accounting Officer 0 Common Stock 2025-11-28 2025-11-28 5 A 0 E 2 119.5525 A 10881 D Mr. Rosenbaum is voluntarily reporting the acquisition of shares of the Issuer's common stock pursuant to the Issuer's 2016 Employee Stock Purchase Plan for the purchase period June 1, 2025 through November 30, 2025. This transaction is exempt from Section 16(b) under Rule 16b-3. Marc Rosenbaum 2025-12-02