X0304 4 2012-01-14 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 2012-01-14 4 M 0 11880 0 A 542582 I By self as trustee of trust Common Stock 2012-01-14 4 F 0 4294 6.71 D 538288 I By self as trustee of trust Common Stock 120518 I By 401(k) Common Stock 343056 I By spouse as trustee of trust Common Stock 45220 D Common Stock 82000 I Family-owned LLC Common Stock 9855 I Trustee of son's trust Restricted Stock Units 0 2012-01-14 4 M 0 11880 0 D Common Stock 11880 11881 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 11,880 Restricted Stock Units. Shares held in the Sonic Corp. 401(k) as of January 17, 2012. The total number of shares beneficially owned directly includes 3,431 shares held in the 1991 Sonic Corp. Stock Purchase Plan as of January 17, 2012. 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. Carolyn C. Cummins for J. Clifford Hudson 2012-01-17