secwatch.observer — SEC 8-K summary
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Issuer:     iRhythm Holdings, Inc. (IRTC)
CIK:        0001388658
Form:       8-K
Filed at:   2026-06-15T20:30:17+00:00
Accession:  0001388658-26-000055
Event type: cyber
Sentiment:  negative
Materiality: 0.75
Item codes: 1.05
LLM model:  deepseek-v4-flash:cloud@v2

iRhythm discloses cyber incident with data exfiltration; threat actor demanded payment
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- Unauthorized activity identified June 8; threat actor demanded payment for not disclosing exfiltrated data including PHI and proprietary info.
- Company determined incident material on June 10 due to volume of potentially affected data.
- No impact to clinical/medical devices, financial reporting, or patient safety; no card info stored.
- Investigation ongoing; no evidence of ongoing access; company believes not likely material to financial condition.
- Company has cyber insurance but no assurance coverage sufficient.

Source:
  EDGAR index:    https://www.sec.gov/Archives/edgar/data/1388658/000138865826000055/0001388658-26-000055-index.htm
  Primary doc:    https://www.sec.gov/Archives/edgar/data/1388658/000138865826000055/irtc-20260610.htm
  HTML page:      https://secwatch.observer/filing/0001388658-26-000055

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