secwatch / observer
MDU MDU RESOURCES GROUP INC
CIK 0000067716 50 ready 8-Ks latest May 13, 2026, 4:04 PM ET RSS · JSON
Activity: QUIET 0 filings / 30d vs 1 baseline
Ready 8-Ks 50
Latest filing May 13, 2026, 4:04 PM ET
Top materiality 0.90
Event mix other_material ×21 · earnings ×11 · leadership ×6
Sentiment 16 pos · 1 neg · 33 neu
Latest earnings ▼ miss 2026-Q1
Executive change recent →

Recent 8-K filings for MDU

Executive changes

Appointed

Vernon A. Dosch

Director
MDU · MDU RESOURCES GROUP INC
Effective
2024-11-15
Filed
November 14, 2024, 6:59 PM ET
On November 14, 2024, the Board of Directors of MDU Resources Group, Inc. (the “Company”) elected Vernon A. Dosch as a director of the Board, effective November 15, 2024, to serve until the 2025 Annual Meeting of Stockholders.
Departed

Jeffrey S. Thiede

executive officer
MDU · MDU RESOURCES GROUP INC
Effective
2024-10-31
Filed
November 1, 2024, 7:59 PM ET
Jeffrey S. Thiede resigned from his position as an executive officer of the Company.
Departed

Michael S. Della Rocca

director
MDU · MDU RESOURCES GROUP INC
Effective
2024-10-31
Filed
November 1, 2024, 7:59 PM ET
effective as of immediately prior to the Effective Time, Michael S. Della Rocca, Dale S. Rosenthal, Edward A. Ryan and David M. Sparby resigned from the Company’s board of directors (the “Board”).
Departed

Dale S. Rosenthal

director
MDU · MDU RESOURCES GROUP INC
Effective
2024-10-31
Filed
November 1, 2024, 7:59 PM ET
effective as of immediately prior to the Effective Time, Michael S. Della Rocca, Dale S. Rosenthal, Edward A. Ryan and David M. Sparby resigned from the Company’s board of directors (the “Board”).
Departed

James H. Gemmel

director
MDU · MDU RESOURCES GROUP INC
Effective
2024-10-31
Filed
November 1, 2024, 7:59 PM ET
effective as of immediately prior to the Effective Time, James H. Gemmel resigned from the Board
Departed

David M. Sparby

director
MDU · MDU RESOURCES GROUP INC
Effective
2024-10-31
Filed
November 1, 2024, 7:59 PM ET
effective as of immediately prior to the Effective Time, Michael S. Della Rocca, Dale S. Rosenthal, Edward A. Ryan and David M. Sparby resigned from the Company’s board of directors (the “Board”).
Departed

Edward A. Ryan

director
MDU · MDU RESOURCES GROUP INC
Effective
2024-10-31
Filed
November 1, 2024, 7:59 PM ET
effective as of immediately prior to the Effective Time, Michael S. Della Rocca, Dale S. Rosenthal, Edward A. Ryan and David M. Sparby resigned from the Company’s board of directors (the “Board”).
Departed

Edward A. Ryan

Director
MDU · MDU RESOURCES GROUP INC
Filed
September 3, 2024, 7:59 PM ET
each of Dale S. Rosenthal, Michael S. Della Rocca, Edward A. Ryan and David M. Sparby (collectively, the “Prospective Everus Construction Directors”) are expected to resign as directors of the Company
Departed

Dale S. Rosenthal

Director
MDU · MDU RESOURCES GROUP INC
Filed
September 3, 2024, 7:59 PM ET
each of Dale S. Rosenthal, Michael S. Della Rocca, Edward A. Ryan and David M. Sparby (collectively, the “Prospective Everus Construction Directors”) are expected to resign as directors of the Company
Departed

Michael S. Della Rocca

Director
MDU · MDU RESOURCES GROUP INC
Filed
September 3, 2024, 7:59 PM ET
each of Dale S. Rosenthal, Michael S. Della Rocca, Edward A. Ryan and David M. Sparby (collectively, the “Prospective Everus Construction Directors”) are expected to resign as directors of the Company
Departed

David M. Sparby

Director
MDU · MDU RESOURCES GROUP INC
Filed
September 3, 2024, 7:59 PM ET
each of Dale S. Rosenthal, Michael S. Della Rocca, Edward A. Ryan and David M. Sparby (collectively, the “Prospective Everus Construction Directors”) are expected to resign as directors of the Company
Appointed

Marian M. Durkin

Director
MDU · MDU RESOURCES GROUP INC
Effective
2024-08-15
Filed
August 15, 2024, 7:59 PM ET
appointed Michael S. Della Rocca and Marian M. Durkin to the Board, in each case, effective August 15, 2024, to serve until the 2025 Annual Meeting of Stockholders.

Earnings & guidance

2026-Q1 EPS reported $0.39 vs consensus $0.42 ▼ miss (-7.2%) filing →

Materiality & sentiment trend

Max materiality 0.90 · Median 0.65 · Most common event other_material

16 positive 1 negative 33 neutral

source · MDU on sec.gov