 SALT LAKE CITY--BUSINESS WIRE--Zions Bancorporation, N.A. NASDAQ: ZION announced today that its board of directors authorized a common stock share repurchase for the first quarter of 2021 of up to 50 million. The Zions board of directors also declared a regular quarterly dividend of 0.34 per common share, payable February 25, 2021 to shareholders of record at the close of business on February 18, 2021. In addition to these actions, the Zions board of directors declared regular quarterly c 