MDU Resources Group (MDU) announced that its board of directors has approved a 4% increase in its quarterly dividend rate. The company has paid uninterrupted dividends for 86 years. The new dividend rate will be 13 cents per share compared with the previous quarter’s 12.5 cents, payable on Oct 1, 2024, to stockholders of record as of Sept 12.This increase resulted in an annualized dividend of 52 cents per share compared with the previous level of 50 cents. The board continues to target a long-term dividend ...