---
schema_version: "secwatch.filing_event.v1"
accession: "0001628280-26-070659"
form_type: "8-K"
ticker: "MYGN"
cik: "0000899923"
company_name: "MYRIAD GENETICS INC"
filed_at: "2026-11-05T14:04:54+00:00"
generated_at: "2026-11-05T14:06:17.956739+00:00"
event_type: "cyber"
sentiment: "negative"
materiality_score: 0.85
calibrated_materiality_score: 0.85
confidence: "high"
source: SEC EDGAR
---

# Myriad Genetics discloses Nov 2 network breach; testing and order systems temporarily suspended

## Summary
- Detected unauthorized access within its IT network environment on November 2, 2026; initiated incident response and engaged external experts.
- Temporarily suspended testing operations and order management systems and reset certain system credentials to contain the activity.
- Investigation ongoing into full scope, including whether any patient records were accessed on systems containing patient information.
- Most systems have returned to normal operations; company does not believe the incident will have a material adverse effect on its business.

## SEC filing metadata
- accession: 0001628280-26-070659
- form_type: 8-K
- ticker: MYGN
- cik: 0000899923
- company_name: MYRIAD GENETICS INC
- filed_at: 2026-11-05T14:04:54+00:00
- event_type: cyber
- sentiment: negative
- materiality_score: 0.85
- calibrated_materiality_score: 0.85
- confidence: high
- sec_items: 8.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/899923/000162828026070659/0001628280-26-070659-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/899923/000162828026070659/mygn-20261102.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001628280-26-070659
- JSON: https://secwatch.observer/filing/0001628280-26-070659.json
- Plain text: https://secwatch.observer/filing/0001628280-26-070659.txt

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