---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-25-134960"
form_type: "8-K"
ticker: "FANG"
cik: "0001539838"
company_name: "Diamondback Energy, Inc."
filed_at: "2025-06-04T23:59:59+00:00"
generated_at: "2026-05-19T23:53:43.233906+00:00"
event_type: "m_and_a"
sentiment: "positive"
materiality_score: 0.85
calibrated_materiality_score: 0.85
confidence: "high"
source: SEC EDGAR
---

# Diamondback subsidiary Viper to acquire Sitio Royalties in $4.1B all-equity deal

## Summary
- Deal value ~$4.1B including ~$1.1B net debt of Sitio as of March 31, 2025.
- Viper will issue equity to Sitio stockholders; Diamondback stockholders signed support agreement with 90-day lock-up post-close.
- Diamondback stockholders, holding majority Viper voting power, delivered written consent approving merger.
- Closing subject to customary conditions; Diamondback stockholders also agreed not to transfer shares for 90 days.

## SEC filing metadata
- accession: 0001193125-25-134960
- form_type: 8-K
- ticker: FANG
- cik: 0001539838
- company_name: Diamondback Energy, Inc.
- filed_at: 2025-06-04T23:59:59+00:00
- event_type: m_and_a
- sentiment: positive
- materiality_score: 0.85
- calibrated_materiality_score: 0.85
- confidence: high
- sec_items: 8.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1539838/000119312525134960/0001193125-25-134960-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1539838/000119312525134960/d39778d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-25-134960
- JSON: https://secwatch.observer/filing/0001193125-25-134960.json
- Plain text: https://secwatch.observer/filing/0001193125-25-134960.txt

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