iRhythm Technologies, Inc. — Director's Dealing 2018

Dec 10, 2018

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: iRhythm Technologies, Inc. (IRTC)
CIK: 0001388658
Period of Report: 2018-12-07

Reporting Person: Vort David A (EVP, Sales)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2018-12-07	Common Stock	M	4500	$3.65	Acquired	26320	Direct
2018-12-07	Common Stock	S	5176	$73.31	Disposed	21144	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2018-12-07	Employee Stock Option (right to buy)	$3.65	M	4500	Disposed	2024-02-04	Common Stock (4500)	Direct

Footnotes

F1: Includes 323 shares acquired pursuant to the issuer's 2016 Employee Stock Purchase Plan (the "Plan") on June 1, 2018 and 353 shares acquired pursuant to the Plan on December 1, 2018. Reflects a corrective decrease of 1,077 shares resulting from the duplicate reporting in Forms 4 filed September 13, 2017 and March 1, 2018 of 1,077 shares acquired pursuant to the Plan on June 1, 2017.

F2: This transaction was executed in multiple trades at prices ranging from $73.2836 to $73.4458. The prices 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: The option vested and the shares became exercisable according to the following schedule: 1/4 on January 1, 2015 and 1/36 of the remaining shares on each full calendar month thereafter.