---
schema_version: "secwatch.filing_event.v1"
accession: "0000067716-26-000005"
form_type: "8-K"
ticker: "MDU"
cik: "0000067716"
company_name: "MDU RESOURCES GROUP INC"
filed_at: "2026-01-16T23:59:59+00:00"
generated_at: "2026-05-16T09:58:49.173715+00:00"
event_type: "debt"
sentiment: "neutral"
materiality_score: 0.45
confidence: "high"
source: SEC EDGAR
---

# MDU Resources subsidiary extends private shelf facility to Dec 2028; $115M capacity remains

## Summary
- WBI Energy Transmission entered Amendment No.1 to its Private Shelf Agreement with PGIM/Prudential.
- Issuance period for up to $350M in senior unsecured notes extended to December 22, 2028.
- As of date, $115M of shelf capacity remains available for future issuance.
- Proceeds to fund general corporate purposes and WBI's previously announced capex.
- Structuring fee of $75,000 paid to Prudential in connection with the amendment.

## SEC filing metadata
- accession: 0000067716-26-000005
- form_type: 8-K
- ticker: MDU
- cik: 0000067716
- company_name: MDU RESOURCES GROUP INC
- filed_at: 2026-01-16T23:59:59+00:00
- event_type: debt
- sentiment: neutral
- materiality_score: 0.45
- confidence: high
- sec_items: 1.01, 2.03, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/67716/000006771626000005/0000067716-26-000005-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/67716/000006771626000005/mdu-20260115.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000067716-26-000005
- JSON: https://secwatch.observer/filing/0000067716-26-000005.json
- Plain text: https://secwatch.observer/filing/0000067716-26-000005.txt

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