---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-23-251667"
form_type: "8-K"
ticker: "MGM"
cik: "0000789570"
company_name: "MGM Resorts International"
filed_at: "2023-10-05T23:59:59+00:00"
generated_at: "2026-06-10T04:22:07.021752+00:00"
event_type: "cyber"
sentiment: "negative"
materiality_score: 0.78
calibrated_materiality_score: 0.78
confidence: "high"
source: SEC EDGAR
---

# MGM reports ~$100M EBITDAR hit from cyber incident; customer data accessed

## Summary
- Cyber incident reduced Q3 Adjusted Property EBITDAR by ~$100M for Las Vegas Strip and Regional Operations.
- September occupancy fell to 88% vs 93% prior year; expects 93% in October and full rebound in November.
- Customer personal data before March 2019 accessed; limited SSN and passport numbers for some.
- One-time expenses less than $10M in Q3; company believes insurance will cover financial impact.
- No evidence data used for identity theft; no bank account or payment card info accessed.

## SEC filing metadata
- accession: 0001193125-23-251667
- form_type: 8-K
- ticker: MGM
- cik: 0000789570
- company_name: MGM Resorts International
- filed_at: 2023-10-05T23:59:59+00:00
- event_type: cyber
- sentiment: negative
- materiality_score: 0.78
- calibrated_materiality_score: 0.78
- confidence: high
- sec_items: 2.02, 7.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/789570/000119312523251667/0001193125-23-251667-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/789570/000119312523251667/d461062d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-23-251667
- JSON: https://secwatch.observer/filing/0001193125-23-251667.json
- Plain text: https://secwatch.observer/filing/0001193125-23-251667.txt

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