# EDGAR Filing Document

**Accession Number:** 0001388658
**File Stem:** 0001388658-26-000022
**Filing Date:** 2026-4
**Character Count:** 8244
**Document Hash:** 59c1ba31c2eb2b23eaeee038d9c30736
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001388658-26-000022.hdr.sgml**: 20260401

**ACCESSION NUMBER**: 0001388658-26-000022

**CONFORMED SUBMISSION TYPE**: 8-K

**PUBLIC DOCUMENT COUNT**: 13

**CONFORMED PERIOD OF REPORT**: 20260330

**ITEM INFORMATION**: Changes in Registrant's Certifying Accountant

**ITEM INFORMATION**: Financial Statements and Exhibits

**FILED AS OF DATE**: 20260401

**DATE AS OF CHANGE**: 20260331

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** iRhythm Holdings, Inc.
- **CENTRAL INDEX KEY:** 0001388658
- **STANDARD INDUSTRIAL CLASSIFICATION:** SURGICAL & MEDICAL INSTRUMENTS & APPARATUS [3841]
- **ORGANIZATION NAME:** 08 Industrial Applications and Services
- **EIN:** 413421287
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 8-K
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-37918
- **FILM NUMBER:** 26824141

**BUSINESS ADDRESS:**
- **STREET 1:** 699 8TH STREET
- **STREET 2:** SUITE 600
- **CITY:** San Francisco
- **STATE:** CA
- **ZIP:** 94103
- **BUSINESS PHONE:** 415-632-5700

**MAIL ADDRESS:**
- **STREET 1:** 699 8TH STREET
- **STREET 2:** SUITE 600
- **CITY:** San Francisco
- **STATE:** CA
- **ZIP:** 94103

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** iRhythm Technologies, Inc.
- **DATE OF NAME CHANGE:** 20111021

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** IRhythm Technologies, Inc.
- **DATE OF NAME CHANGE:** 20110429

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** IRhythm Technologies Inc
- **DATE OF NAME CHANGE:** 20070201

?xml version='1.0' encoding='ASCII'? irtc-20260330

**UNITED STATES**

**SECURITIES AND EXCHANGE COMMISSION**

**Washington, D.C. 20549** 

**FORM 8-K** 

**CURRENT REPORT**

**Pursuant to Section 13 or 15(d)**

**of the Securities Exchange Act of 1934**

**Date of report (Date of earliest event reported): March 30, 2026**

**iRhythm Holdings, Inc.** 

**(Exact name of Registrant as specified in its charter)** 

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| | | |
|:---|:---|:---|
| **Delaware** | **001-37918** | **41-3421287** |
| **(State or other jurisdiction of<br>incorporation or organization)** | **(Commission<br>File Number)** | **(I.R.S. Employer<br>Identification Number)** |

---

**699 8th Street, Suite 600** 

**San Francisco, California 94103** 

**(Address of principal executive office) (Zip Code)**

**(415) 632-5700** 

**(Registrant's telephone number, including area code)**

**N/A**

**(Former Name or Former Address, if Changed Since Last Report)**

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

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| | | |
|:---|:---|:---|
| **Title of each class** | **Trading Symbol** | **Name of each exchange on which registered** |
| Common Stock, Par Value $0.001 Per Share | IRTC | The NASDAQ Global Select Market |

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Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§ 230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§ 240.12b-2 of this chapter).

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. ☐

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**Item 4.01. Changes in Registrant's Certifying Accountant**

(a) Dismissal of Independent Registered Public Accounting Firm

On March 30, 2026, the Audit Committee of the Board of Directors (the "Audit Committee") of iRhythm Holdings, Inc. (the "Company") dismissed PricewaterhouseCoopers LLP ("PwC") as the Company's independent registered public accounting firm.

PwC's audit reports on the Company's consolidated financial statements for the fiscal years ended December 31, 2025 and December 31, 2024 did not contain an adverse opinion or a disclaimer of opinion and were not qualified or modified as to uncertainty, audit scope, or accounting principles.

During the Company's two most recent fiscal years ended December 31, 2025 and December 31, 2024, and the subsequent interim period through March 30, 2026, (i) there were no "disagreements" (within the meaning set forth in Item 304(a)(1)(iv) of Regulation S-K) between the Company and PwC on any matter of accounting principles or practices, financial statement disclosure, or auditing scope or procedure, which disagreements, if not resolved to PwC's satisfaction, would have caused PwC to make reference to the subject matter of the disagreements in connection with their reports; and (ii) there were no "reportable events" (within the meaning set forth in Item 304(a)(1)(v) of Regulation S-K).

In accordance with Item 304(a)(3) of Regulation S-K, the Company provided PwC with a copy of this Current Report on Form 8-K and requested that PwC furnish it with a letter addressed to the U.S. Securities and Exchange Commission stating whether PwC agrees with the statements of the Company herein and, if not, stating the respects in which it does not agree. PwC furnished the requested letter, stating its agreement with such statements, and a copy is filed as Exhibit 16.1 to this Current Report on Form 8-K.

(b) Engagement of New Independent Registered Public Accounting Firm

On March 30, 2026, the Audit Committee approved the engagement of KPMG LLP ("KPMG") as the Company's independent registered public accounting firm for the fiscal year ending December 31, 2026. During the Company's two most recent fiscal years and the subsequent interim period through March 30, 2026, neither the Company, nor anyone on its behalf, consulted KPMG regarding (i) the application of accounting principles to a specific transaction, either completed or proposed, or the type of audit opinion that might be rendered on the Company's financial statements, and neither a written report nor oral advice was provided to the Company that KPMG concluded was an important factor considered by the Company in reaching a decision as to any accounting, auditing, or financial reporting issue, or (ii) any matter that was either the subject of a "disagreement" (within the meaning set forth in Item 304(a)(1)(iv) of Regulation S-K and the related instructions to Item 304 of Regulation S-K) or a "reportable event" (within the meaning set forth in Item 304(a)(1)(v) of Regulation S-K).

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**Item 9.01 Financial Statements and Exhibits**

**(d) Exhibits**

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| | |
|:---|:---|
| **Exhibit No.** | **Description** |
| 16.1 | <u>[Letter from PricewaterhouseCoopers LLP dated March 31, 2026.](electronicpwcex16lettert.htm)</u> |
| 104 | Cover Page Interactive Data File (formatted as Inline XBRL) |

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**SIGNATURES**

Pursuant to the requirements 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 hereunto duly authorized.

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| | | |
|:---|:---|:---|
| | **IRHYTHM HOLDINGS, INC.** | **IRHYTHM HOLDINGS, INC.** |
| Date: March 31, 2026 | By: | /s/ Daniel Wilson |
|  |  | Daniel Wilson |
|  |  | Chief Financial Officer |

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## Exhibit 16.1

![](electronicpwcex16lettert001.jpg)

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;March 31, 2026 Securities and Exchange Commission 100 F Street, N.E. Washington, DC 20549 Commissioners: We have read the statements made by iRhythm Holdings, Inc. (copy attached), which we understand will be filed with the Securities and Exchange Commission, pursuant to Item 4.01 of Form 8-K of iRhythm Holdings, Inc. dated March 30, 2026. We agree with the statements concerning our Firm contained therein. Very truly yours, /s/ PricewaterhouseCoopers LLP San Jose, California Attachment

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