iRhythm Technologies, Inc. — Director's Dealing 2023

Mar 1, 2023

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: iRhythm Technologies, Inc. (IRTC)
CIK: 0001388658
Period of Report: 2023-02-27

Reporting Person: Day Mark J. (Chief Technology Officer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2023-02-27	Common Stock	A	8354	—	Acquired	55376	Direct
2023-02-27	Common Stock	A	3468	—	Acquired	58844	Direct
2023-02-28	Common Stock	S	1898	$117.83	Disposed	56946	Direct
2023-02-28	Common Stock	S	15	$119.28	Disposed	56931	Direct

Footnotes

F1: These securities are restricted stock units ("RSUs"). Each RSU represents a contingent right to receive one share of the Issuer's Common Stock. 25% of the RSUs vest on March 1, 2024 and each one-year anniversary thereafter, subject to the Reporting Person continuing as a service provider through each such date.

F2: Includes 303 shares acquired under the Issuer's employee stock purchase plan on May 31, 2022.

F3: Includes 14 shares acquired under the Issuer's employee stock purchase plan on November 30, 2022.

F4: Represents the acquisition of shares upon the determination of the Compensation Committee of the Board of Directors of the Issuer that the performance conditions were met with respect to performance RSUs granted to the Reporting Person on February 25, 2020.

F5: These shares were sold to cover tax withholding and remittance obligations in connection with the vesting of RSUs.