First Security Corp. is increasing its regular quarterly cash dividend of 13 percent to 26 cents per share from 23 cents per share. The dividend, payable March 7 to shareholders of record on Feb. 18, equals an annual rate of $1.04 per share, compared with the previous rate of 92 cents.

Spencer F. Eccles, chairman and chief executive officer, said the increased cash dividend reflects the continued growth of earnings to record highs in each of the past three years, along with the sound economic health of the markets serviced by First Security banks.