 ADDISON, Texas--BUSINESS WIRE-- gnty--Guaranty Bancshares, Inc. NASDAQ: GNTY, the parent company of Guaranty Bank Trust, N.A., yesterday announced that Joel Johnson has been hired and appointed as the companys Chief Digital Officer. Johnson will be responsible for continuing the growth of Guarantys digital product offerings with a focus on creating a streamlined user experience for the companys digital and mobile banking customers while growing the companys digital asset products. As dig 