iRhythm Technologies, Inc. — Director's Dealing 2018

May 9, 2018

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: iRhythm Technologies, Inc. (IRTC)
CIK: 0001388658
Period of Report: 2018-05-07

Reporting Person: King Kevin M (Director, President and CEO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2018-05-07	Common Stock	M	56759	$4.12	Acquired	218146	Direct
2018-05-07	Common Stock	S	56759	$66.37	Disposed	161387	Direct
2018-05-08	Common Stock	M	23241	$4.12	Acquired	184628	Direct
2018-05-08	Common Stock	S	23241	$64.78	Disposed	161387	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2018-05-07	Employee Stock Option (right to buy)	$4.12	M	56759	Disposed	2022-09-27	Common Stock (56759)	Direct
2018-05-08	Employee Stock Option (right to buy)	$4.12	M	23241	Disposed	2022-09-27	Common Stock (23241)	Direct

Footnotes

F1: The option exercise and sale reported in this Form 4 were effected pursuant to a Rule 10b5-l trading plan adopted by the reporting person on November 7, 2017.

F2: This transaction was executed in multiple trades at prices ranging from $65.49 to $67.48. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

F3: This transaction was executed in multiple trades at prices ranging from $64.32 to $65.75. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.