X0508 4 2025-11-28 0 0001388658 iRhythm Technologies, Inc. IRTC 0001850687 Shrishrimal Sumi C/O IRHYTHM TECHNOLOGIES, INC. 699 8TH ST #600 SAN FRANCISCO CA 94103 0 1 0 0 EVP, Chief Risk Officer 0 Common Stock 2025-11-28 2025-11-28 5 A 0 E 73 119.5525 A 34105 D Ms. Shrishrimal 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. /s/ Marc Rosenbaum, attorney-in-fact 2025-12-02