X0306 4 2018-06-11 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 9855 I Trustee of son's trust Common Stock 55000 I by family-owned LLC Common Stock 2018-06-11 5 G 0 790 0 D 113589 I By spouse as trustee of trust Common stock 2018-06-11 4 M 0 14705 6.80 A 247024 I By self as trustee of trust Common stock 2018-06-11 4 M 0 146640 11.07 A 393664 I By self as trustee of trust Common stock 2018-06-11 4 M 0 103537 20.58 A 497201 I By self as trustee of trust Common stock 2018-06-11 4 M 0 86595 31.29 A 583796 I By self as trustee of trust Common stock 2018-06-11 4 M 0 68559 29.37 A 652355 I By self as trustee of trust Common stock 2018-06-11 4 M 0 43337 25.4 A 695692 I By self as trustee of trust Common stock 2018-06-11 4 F 0 356264 32.84 D 339428 I By self as trustee of trust Incentive Stock Option (right to buy) 6.80 2018-06-11 4 M 0 14705 0 D 2015-01-18 2019-01-18 common stock 14705 0 D Incentive Stock Option (right to buy) 11.07 2018-06-11 4 M 0 9033 0 D 2016-01-16 2020-01-16 common stock 9033 0 D Nonqualified Stock Option (right to buy) 11.07 2018-06-11 4 M 0 137607 0 D 2016-01-16 2020-01-16 common stock 137607 0 I by self as trustee of trust Incentive Stock Option (right to buy) 20.58 2018-06-11 4 M 0 4859 0 D 2017-01-16 2021-01-16 common stock 4859 0 D Nonqualified Stock Option (right to buy) 20.58 2018-06-11 4 M 0 98678 0 D 2017-01-16 2021-01-16 common stock 98678 0 I by self as trustee of trust Incentive Stock Option (right to buy) 31.29 2018-06-11 4 M 0 3195 0 D 2018-01-29 2022-01-29 common stock 3195 0 D Nonqualified Stock Option (right to buy) 31.29 2018-06-11 4 M 0 83400 0 D 2018-01-29 2022-01-29 common stock 83400 0 I by self as trustee of trust Nonqualified Stock Option (right to buy) 29.37 2018-06-11 4 M 0 68559 0 D 2018-01-28 2023-01-28 common stock 68559 30876 I by self as trustee of trust Incentive Stock Option (right to buy) 25.40 2018-06-11 4 M 0 1 0 D 2018-01-19 2024-01-19 common stock 1 3937 D Nonqualified Stock Option (right to buy) 25.40 2018-06-11 4 M 0 43336 0 D 2018-01-19 2024-01-19 common stock 43336 82738 I by self as trustee of trust 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 2018-06-13