---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-23-086105"
form_type: "8-K"
ticker: "MPT"
cik: "0001287865"
company_name: "MEDICAL PROPERTIES TRUST INC"
filed_at: "2023-03-31T23:59:59+00:00"
generated_at: "2026-06-17T07:39:12.587049+00:00"
event_type: "litigation"
sentiment: "positive"
materiality_score: 0.7
calibrated_materiality_score: 0.7
confidence: "high"
source: SEC EDGAR
---

# MPT files defamation lawsuit against Viceroy Research; issues letter to shareholders

## Summary
- Filed federal lawsuit against Viceroy Research seeking injunctive relief, disgorgement, and damages for defamation, conspiracy, and tortious interference.
- 2022 revenue exceeded $1.5B; NFFO and AFFO per share up 4%; portfolio EBITDARM coverage at 2.1x.
- Steward concentration reduced from ~40% to ~19% after expected Utah sale to a large hospital system.
- Macquarie partnership valued eight Massachusetts hospitals at ~$1.7B, generating a 47% gain on sale.
- Rebutted round-tripping claims: funds for Houston hospital, IASIS/Steward, and Tenet hospitals paid directly to third parties.

## SEC filing metadata
- accession: 0001193125-23-086105
- form_type: 8-K
- ticker: MPT
- cik: 0001287865
- company_name: MEDICAL PROPERTIES TRUST INC
- filed_at: 2023-03-31T23:59:59+00:00
- event_type: litigation
- sentiment: positive
- materiality_score: 0.7
- calibrated_materiality_score: 0.7
- confidence: high
- sec_items: 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1287865/000119312523086105/0001193125-23-086105-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1287865/000119312523086105/d489443d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-23-086105
- JSON: https://secwatch.observer/filing/0001193125-23-086105.json
- Plain text: https://secwatch.observer/filing/0001193125-23-086105.txt

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