---
schema_version: "secwatch.filing_event.v1"
accession: "0001692115-25-000125"
form_type: "8-K"
ticker: "SWX"
cik: "0001692115"
company_name: "Southwest Gas Holdings, Inc."
filed_at: "2025-06-06T23:59:59+00:00"
generated_at: "2026-05-19T18:26:38.516828+00:00"
event_type: "other_material"
sentiment: "positive"
materiality_score: 0.75
calibrated_materiality_score: 0.75
confidence: "high"
source: SEC EDGAR
---

# Great Basin Expansion Project binding open season closed; estimated $800M-$1.2B capex

## Summary
- Great Basin closed binding open season for 2028 Expansion Project; incremental capacity of ~1.25 Bcf/d.
- Estimated capital investment of $800M to $1.2B, subject to FERC approval and execution of binding precedent agreements.
- Minimum 20-year transportation agreements with estimated rate $14-$17/Dth/month.
- Open season extended due to strong shipper demand; final precedent agreements expected Q3 2025.
- Project not reflected in 2025 guidance; no guidance update at this time.

## SEC filing metadata
- accession: 0001692115-25-000125
- form_type: 8-K
- ticker: SWX
- cik: 0001692115
- company_name: Southwest Gas Holdings, Inc.
- filed_at: 2025-06-06T23:59:59+00:00
- event_type: other_material
- sentiment: positive
- materiality_score: 0.75
- calibrated_materiality_score: 0.75
- confidence: high
- sec_items: 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1692115/000169211525000125/0001692115-25-000125-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1692115/000169211525000125/swx-20250605.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001692115-25-000125
- JSON: https://secwatch.observer/filing/0001692115-25-000125.json
- Plain text: https://secwatch.observer/filing/0001692115-25-000125.txt

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