Principal Financial Group, Inc. announced that quarterly common stock dividend of $0.51 per share for first quarter 2018 was authorized by the company’s board of directors, bringing the trailing twelve-month dividend to $1.93 per share, a 15% increase compared to the prior year trailing twelve-month period. The dividend will be payable on Mar. 29, 2018, to shareholders of record as of Mar. 5, 2018.