MDU RESOURCES GROUP INC — Director's Dealing 2006

Feb 3, 2006

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: MDU RESOURCES GROUP INC (MDU)
CIK: 0000067716
Period of Report: 2006-02-01

Reporting Person: Imsdahl Bruce T (President & CEO, Mont.-Dakota)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2006-02-01	Common Stock	M	11361	$19.8267	Acquired	17859	Direct
2006-02-01	Common Stock	S	300	$36.05	Disposed	17559	Direct
2006-02-01	Common Stock	S	9500	$36.09	Disposed	8059	Direct
2006-02-01	Common Stock	S	1200	$36.19	Disposed	6859	Direct
2006-02-01	Common Stock	S	361	$36.23	Disposed	6498	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2006-02-01	Stock Options (Right to buy)	$19.8267	M	11361	Disposed	2011-02-15	Common Stock (11361)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock - (401-k)	15043.211	Indirect
Common Stock - (ESOP)	8789.909	Indirect
Common Stock-Restricted Stock	3060	Indirect
Common Stock	15896.49	Indirect

Footnotes

F1: These options were exercisable 2/15/2010. Vesting was accelerated for all options except for 17,264. The balance of the 17,264 will vest on 2/15/2010, but vesting of some or all of these 17,264 may be accelerated depending on attainment of certain performance goals.