MDU RESOURCES GROUP INC — Director's Dealing 2006

Feb 21, 2006

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: MDU RESOURCES GROUP INC (MDU)
CIK: 0000067716
Period of Report: 2006-02-16

Reporting Person: CASTLEBERRY JOHN K (CEO of WBI Holdings, Inc.)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2006-02-16	Common Stock	A	4570	—	Acquired	13559.954	Direct
2006-02-16	Common Stock	F	2317	$34.65	Disposed	11242.954	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock - (401-k)	75.483	Indirect
Common Stock-Restricted Stock	1980	Indirect