---
schema_version: "secwatch.filing_event.v1"
accession: "0000067716-24-000026"
form_type: "8-K"
ticker: "MDU"
cik: "0000067716"
company_name: "MDU RESOURCES GROUP INC"
filed_at: "2024-03-18T23:59:59+00:00"
generated_at: "2026-06-04T16:10:16.407512+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.6
calibrated_materiality_score: 0.6
confidence: "high"
source: SEC EDGAR
---

# MDU Resources amends Corvex cooperation agreement; adds James Gemmel to board tied to ownership and spin-off

## Summary
- James H. Gemmel added as board nominee for 2024 annual meeting; term expires at 2025 meeting.
- Gemmel must resign if Corvex holds less than 8.1M shares, upon MDU Construction Services spin-off, or at 2025 annual meeting.
- Standstill provisions extended to coincide with Gemmel's board tenure.
- Agreement amends and restates original cooperation agreement from January 2023.

## SEC filing metadata
- accession: 0000067716-24-000026
- form_type: 8-K
- ticker: MDU
- cik: 0000067716
- company_name: MDU RESOURCES GROUP INC
- filed_at: 2024-03-18T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.6
- calibrated_materiality_score: 0.6
- confidence: high
- sec_items: 1.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/67716/000006771624000026/0000067716-24-000026-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/67716/000006771624000026/mdu-20240314.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000067716-24-000026
- JSON: https://secwatch.observer/filing/0000067716-24-000026.json
- Plain text: https://secwatch.observer/filing/0000067716-24-000026.txt

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