X0306 4 2013-09-17 0 0000868611 SONIC CORP SONC 0001289678 Cummins Carolyn C. 300 JOHNNY BENCH DRIVE OKLAHOMA CITY OK 73104 0 1 0 0 Vice President Common Stock 2013-09-17 4 S 0 1500 18.29 D 8676 D Common Stock 2010-12-16 4 J 0 538 0 D 474 I As guardian for children Common Stock 2013-08-08 4 J 0 248 0 D 226 I As guardian for child Common Stock 2285 I By 401(k) The total number of shares beneficially owned directly includes 1,301 shares held in the Sonic Corp. Stock Purchase Plan as of August 31, 2013. These shares were transferred from reporting person's name as guardian, directly into son's name upon his attainment of age 25. The reporting person no longer claims any beneficial interest in the shares transferred directly to adult son. These shares were transferred from reporting person's name as guardian, directly into son's name upon his attainment of age 25. The reporting person no longer claims any beneficial interest in the shares transferred directly to adult son. Shares held in the Sonic Corp. 401(k) as of August 31, 2013. Carolyn C. Cummins 2013-09-19