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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
________________________________________________________________________________________________________
FORM 10-K/A
________________________________________________________________________________________________________
(Mark One)
ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the fiscal year ended December 31, 2021
OR
TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE TRANSITION PERIOD FROM                      TO                     
Commission File Number 001-37918
________________________________________________________________________________________________________
iRhythm Technologies, Inc.
(Exact name of Registrant as specified in its Charter)
________________________________________________________________________________________________________
Delaware20-8149544
(State or other jurisdiction of
incorporation or organization)
(I.R.S. Employer
Identification No.)
699 8th Street, Suite 600
San Francisco, California
(Address of principal executive offices)
94103
(Zip Code)
Registrant’s telephone number, including area code: (415632-5700
________________________________________________________________________________________________________
Securities registered pursuant to Section 12(b) of the Act:
Title of each classTrading SymbolName of each exchange on which registered
Common Stock, Par Value $.001 Per ShareIRTCThe Nasdaq Stock Market
Securities registered pursuant to Section 12(g) of the Act: None
Indicate by check mark if the Registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. Yes ☒ No ☐
Indicate by check mark if the Registrant is not required to file reports pursuant to Section 13 or 15(d) of the Act. Yes ☐ No ☒
Indicate by check mark whether the Registrant: (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the Registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes ☒ No ☐
Indicate by check mark whether the Registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the Registrant was required to submit and post such files). Yes ☒ No ☐
Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K (§229.405) is not contained herein, and will not be contained, to the best of Registrant’s knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K. ☐
Indicate by check mark whether the Registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definition of “large accelerated filer”, “accelerated filer”, “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act. (Check one):
Large accelerated filerAccelerated filer
Non-accelerated filerSmall reporting company
Emerging growth company
If an emerging growth company, indicate by check mark if the Registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐
Indicate by check mark whether the registrant has filed a report on and attestation to its management’s assessment of the effectiveness of its internal control over financial reporting under Section 404(b) of the Sarbanes-Oxley Act (15 U.S.C. 7262(b)) by the registered public accounting firm that prepared or issued its audit report.
Indicate by check mark whether the Registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes  No ☒
The aggregate market value of the voting and non-voting common equity held by non-affiliates of the Registrant, based on the closing price of the shares of common stock on The NASDAQ Stock Market on June 30, 2021, was approximately $1.9 billion.
The number of shares of Registrant’s Common Stock outstanding as of February 18, 2022 was 29,513,264.
DOCUMENTS INCORPORATED BY REFERENCE:
Portions of the information called for by Part III of this Form 10-K is hereby incorporated by reference from the definitive Proxy Statements for our annual meeting of stockholders, which will be filed with the Securities and Exchange Commission not later than 120 days after December 31, 2021.


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EXPLANATORY NOTE

iRhythm Technologies, Inc. (the “Company”) filed its Annual Report on Form 10-K as of and for the year ended December 31, 2021 with the Securities and Exchange Commission on February 28, 2022 (the “Original Filing”). The Company is filing this Form 10-K/A, Amendment No. 1 solely to amend the text of Exhibit 23.1 of the Original Filing to correct a typographical error in Exhibit 23.1 included in the Original Filing, which resulted in Exhibit 23.1 not conforming to the consent provided by the auditors.

Except as described above, no other changes have been made to the Original Filing.
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PART IV

Item 15. Exhibits, Financial Statement Schedules



Exhibit NumberDescription
23.1
Consent of Independent Registered Public Accounting Firm (PricewaterhouseCoopers LLP, San Jose, CA, PCAOB ID: 238)
31.1
31.2
101.INSXBRL Instance Document- the instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document
101.INSXBRL Instance Document
101.SCHXBRL Taxonomy Extension Schema Document
101.CALXBRL Taxonomy Extension Calculation Linkbase Document
101.DEFXBRL Taxonomy Extension Definition Linkbase Document
101.LABXBRL Taxonomy Extension Label Linkbase Document
101.PREXBRL Taxonomy Extension Presentation Linkbase Document

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SIGNATURES
Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, as amended, the Registrant has duly caused this Report to be signed on its behalf by the undersigned, thereunto duly authorized.
iRhythm Technologies, Inc.
Date: March 2, 2022By:/s/ Quentin S. Blackford
Quentin S. Blackford
President and Chief Executive Officer
(Principal Executive Officer)
Date: March 2, 2022By:/s/ Douglas J. Devine
Douglas J. Devine
Chief Financial Officer and Chief Operating Officer
(Principal Financial Officer)
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