X0306 4 2013-01-14 0 0000868611 SONIC CORP SONC 0001065239 HUDSON J CLIFFORD 300 JOHNNY BENCH DRIVE OKLAHOMA CITY OK 73104 1 1 0 0 Chief Executive Officer Common Stock 2013-01-14 4 M 0 11881 0 A 509669 I By self as tustee of trust Common Stock 2013-01-14 4 F 0 4257 10.95 D 505412 I By self as trustee of trust Common Stock 9855 I Trustee of son's trust Common Stock 82000 I By family owned LLC Common Stock 48575 D Common Stock 313256 I By spouse as trustee of trust Restricted Stock Units 0 2013-01-14 4 M 0 11881 0 D Common Stock 11881 0 D Represents shares that vested in accordance with the terms of Restricted Stock Units granted January 14, 2010, providing for vesting of Restricted Stock Units in equal annual installments on each of the first three anniversaries following the date of grant. Shares were withheld by the issuer to cover the minimum tax withholding requirements associated with the vesting of the 11,881 Restricted Stock Units. The reporting person owns 21% of the family limited liability company and disclaims beneficial ownership of the issuer's shares held by the family limited liability company except to the extent of his pecuniary interest. The total number of shares beneficially owned directly includes 6,786 shares held in the 1991 Sonic Corp. Employee Stock Purchase Plan as of January 8, 2013. Carolyn C. Cummins for J. Clifford Hudson 2013-01-15