13G Filing: Southeastern Asset Management and Sonic Corp (SONC)

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G
Under the Securities Exchange Act of 1934

(Amendment No. 2)*

Sonic Corp.
________________________________________________________
(Name of Issuer)

Common Stock
_______________________________________________________
(Title of Class and Securities)

835451105
_______________________________________________________

(CUSIP Number of Class of Securities)

Check the appropriate box to designate the rule pursuant to which this
Schedule is filed:

/X/ Rule 13d-1(b)
/ / Rule 13d-1(c)
/ / Rule 13d-1(d)

* The remainder of this cover page shall be filled out for a

reporting person’s initial filing on this form with respect to the

subject class of securities, and for any subsequent amendment

containing information which would alter the disclosures provided

in a prior page.

The information required in the remainder of this cover page shall

not be deemed to be “filed” for the purpose of Section 18 of the

Securities Exchange Act of 1934 (“Act”) or otherwise subject to the

liabilities of that section of the Act but shall be subject to all

other provisions of the Act (however, see the Notes).