Document Details

Document Details

Filing Type

PRE 14A (SEC's EDGAR System)

Company MDU Resources Group, Inc. (Bismarck, ND)
Event Date 5/7/2019
Filing Date 3/8/2019

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  1. PRE 14A

Note: This document was filed with the SEC in HTML format, as allowed by the recent EDGAR system modernization. S&P cannot take responsibility for its appearance, layout, or legibility.