OKLAHOMA CITY, 2017-Jan-23 — /EPR Retail News/ — Sonic Corp. (NASDAQ:SONC), the nation's largest chain of drive-in restaurants, today (Jan 19, 2017) announced that its Board of Directors declared a quarterly cash dividend of $0.14 per share of common stock to be paid to shareholders of record as of the close of business on February 8, 2017,…