MDU Resources Group, Inc. (MDURI: Grey Market) | Scheduled Ex-Dividend Tue, Feb 17, 2015 01:05 - MDU Resources Group, Inc. ( MDURI : Grey Market) - Scheduled Ex-Dividend - MDU Resources Group, Inc. has announced a dividend ex-date for (MDURI: Grey Market). MDU Resources Group, Inc. is scheduled to disburse a Cash Dividend dividend of $1.275 on Tue, Mar 10, 2015 to shareholders of MDURI. You may find a complete list of dividends at otcmarkets.com .