iRhythm Holdings, Inc. 8-K

What Happened
iRhythm Holdings, Inc. announced on March 30, 2026 that its Audit Committee dismissed PricewaterhouseCoopers LLP (PwC) as the company’s independent registered public accounting firm and approved engagement of KPMG LLP as the new independent auditor for the fiscal year ending December 31, 2026. PwC’s audit reports for the fiscal years ended December 31, 2025 and December 31, 2024 were unqualified; the company reports there were no disagreements or reportable events with PwC through March 30, 2026. PwC provided a letter dated March 31, 2026 agreeing with the company’s statements in the 8‑K.

Key Details

• Audit Committee dismissed PwC and engaged KPMG on March 30, 2026.
• PwC’s audit reports for FY 2025 and FY 2024 contained no adverse opinions, disclaimers, qualifications, disagreements, or reportable events.
• PwC furnished a letter (filed as Exhibit 16.1) dated March 31, 2026 agreeing with the company’s description of the dismissal.
• The company and its representatives did not consult KPMG on accounting or audit matters during the two most recent fiscal years and the interim period through March 30, 2026.

Why It Matters
A change in independent auditor is a material governance event that can affect audit approach, reporting timelines, and potential audit fees. For investors, the filing shows the transition was orderly (prior audits by PwC were unqualified and no disagreements were reported). Investors should watch forthcoming SEC filings (including the FY 2026 audit report in the company’s Form 10‑K) for KPMG’s audit opinion, any changes in disclosures, and disclosures about audit fees or audit‑related matters.