--------------------------------------------------------------------------------
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549
FORM 8-K
CURRENT REPORT
PURSUANT TO SECTION 13 OR 15 (D) OF THE SECURITIES
EXCHANGE ACT OF 1934
DATE OF REPORT (DATE OF EARLIEST EVENT REPORTED) SEPTEMBER 19, 2005
MDU RESOURCES GROUP, INC.
(EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER)
DELAWARE 1-3480 41-0423660
(STATE OR OTHER JURISDICTION (COMMISSION (I.R.S. EMPLOYER
OF INCORPORATION) FILE NUMBER) IDENTIFICATION NO.)
SCHUCHART BUILDING
918 EAST DIVIDE AVENUE
P.O. BOX 5650
BISMARCK, NORTH DAKOTA 58506-5650
(ADDRESS OF PRINCIPAL EXECUTIVE OFFICES)
(ZIP CODE)
REGISTRANT'S TELEPHONE NUMBER, INCLUDING AREA CODE (701) 222-7900
CHECK THE APPROPRIATE BOX BELOW IF THE FORM 8-K FILING IS INTENDED TO
SIMULTANEOUSLY SATISFY THE FILING OBLIGATION OF THE REGISTRANT UNDER ANY OF THE
FOLLOWING PROVISIONS:
|_| WRITTEN COMMUNICATIONS PURSUANT TO RULE 425 UNDER THE SECURITIES ACT
(17 CFR 230.425)
|_| SOLICITING MATERIAL PURSUANT TO RULE 14A-12 UNDER THE EXCHANGE ACT
(17 CFR 240.14A-12)
|_| PRE-COMMENCEMENT COMMUNICATIONS PURSUANT TO RULE 14D-2(B) UNDER THE
EXCHANGE ACT (17 CFR 240.14D-2(B))
|_| PRE-COMMENCEMENT COMMUNICATIONS PURSUANT TO RULE 13E-4(C) UNDER THE
EXCHANGE ACT (17 CFR 240.13E-4(C))
ITEM 8.01 OTHER EVENTS.
On September 19, 2005, MDU Resources Group, Inc. (the "Company") issued a
press release announcing an increase in earnings per share guidance for 2005. A
copy of the press release, which the Company is filing with the Securities and
Exchange Commission, is attached as Exhibit 99 and incorporated by reference
herein.
ITEM 9.01. FINANCIAL STATEMENTS AND EXHIBITS.
(c) Exhibits
99 Press Release issued September 19, 2005, regarding an
increase in earnings per share guidance for 2005.
2
SIGNATURE
Pursuant to the requirements of the Securities Exchange Act of 1934, the
registrant has duly caused this report to be signed on its behalf by the
undersigned hereunto duly authorized.
MDU RESOURCES GROUP, INC.
Date September 19, 2005 BY /s/ Warren L. Robinson
--------------------- ----------------------------
Warren L. Robinson
Executive Vice President and
Chief Financial Officer
3
EXHIBIT INDEX
Exhibit Number Description of Exhibit
-------------- ----------------------
99 Press release issued September
19, 2005, regarding an increase
in earnings per share guidance
for 2005.
4