Item 5.02. Departure of Directors or Principal Officers; Election of Directors; Appointment of Principal Officers

(d) On August 6, 2009, the Board of Directors appointed Douglas N. Benham to fill the open director position of Sonic Corp. (the "Registrant") for a term expiring at the next annual meeting of stockholders of the Registrant. The Board appointed Mr. Benham to serve on the Nominating and Corporate Governance Committee and on the Audit Committee of the Board of Directors.

Item 9.01. Financial Statements and Exhibits.

(d) Exhibits.

99 Press Release, dated August 6, 2009, announcing the appointment of Douglas N. Benham to the Board of Directors