---
schema_version: "secwatch.filing_event.v1"
accession: "0001388658-23-000145"
form_type: "8-K"
ticker: "IRTC"
cik: "0001388658"
company_name: "iRhythm Holdings, Inc."
filed_at: "2023-11-02T23:59:59+00:00"
generated_at: "2026-06-08T23:45:06.711689+00:00"
event_type: "earnings"
sentiment: "positive"
materiality_score: 0.7
calibrated_materiality_score: 0.7
confidence: "high"
source: SEC EDGAR
---

# iRhythm Q3 2023 revenue $124.6M (+20% YoY); raises FY2023 guidance to $487.5M-$490M

## Summary
- Revenue $124.6M (+20% YoY); net loss $27.1M ($0.89/share) vs $21.5M loss in prior year.
- Gross margin 66.2%, down 210 bps due to reserves for excess Zio XT PCBA components.
- Record registration volumes; launched next-generation Zio monitor with enhanced features.
- FY2023 revenue guidance raised to $487.5M-$490M (~19% YoY growth); adj. EBITDA margin ~0%-0.5%.
- Cash and marketable securities $158.5M as of Sept 30, 2023.

## SEC filing metadata
- accession: 0001388658-23-000145
- form_type: 8-K
- ticker: IRTC
- cik: 0001388658
- company_name: iRhythm Holdings, Inc.
- filed_at: 2023-11-02T23:59:59+00:00
- event_type: earnings
- sentiment: positive
- materiality_score: 0.7
- calibrated_materiality_score: 0.7
- confidence: high
- sec_items: 2.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1388658/000138865823000145/0001388658-23-000145-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1388658/000138865823000145/irtc-20231102.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001388658-23-000145
- JSON: https://secwatch.observer/filing/0001388658-23-000145.json
- Plain text: https://secwatch.observer/filing/0001388658-23-000145.txt

## Key facts
- Earnings Releases
  iRhythm Holdings, Inc. reported for the three and nine months ended September 30, 2023 results: revenue $124.6 million, net income $27.1 million, EPS $0.89 per share. Guidance raised.
  - Period: for the three and nine months ended September 30, 2023
  - Revenue: $124.6 million
  - Net income: $27.1 million
  - EPS: $0.89 per share
  - Guidance: raised
  - Result: reported results
  source text: iRhythm Technologies, Inc. (NASDAQ: IRTC), a leading digital health care company focused on creating trusted solutions that detect, predict, and prevent disease, today reported financial results for the three and nine months ended September 30, 2023. Third Quarter 2023 Financial Highlights • Revenue of $124.6 million, a 20.0% increase compared to third quarter 2022
  evidence_url: https://www.sec.gov/Archives/edgar/data/1388658/000138865823000145/0001388658-23-000145-index.htm

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.