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

Page 2 of 4 – SEC Filing

CUSIP No. 835451105 13D
___________________________________________________________________
(1) NAMES OF REPORTING PERSONS
Southeastern Asset Management, Inc. I.D. No. 62-0951781
___________________________________________________________________
(2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP:
(a)
(b) X
___________________________________________________________________
(3) SEC USE ONLY
___________________________________________________________________
(4) SOURCE OF FUNDS
OO: Funds of investment advisory clients
___________________________________________________________________
(5) CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS
REQUIRED PURSUANT TO ITEMS 2(d) or 2(e) [ ]
___________________________________________________________________
(6) CITIZENSHIP OR PLACE OF ORGANIZATION
Tennessee
___________________________________________________________________
: (7) SOLE VOTING POWER
: (Discretionary Accounts)
NUMBER OF SHARES BENEFICIALLY : 0 shares
OWNED BY EACH REPORTING PERSON ________________________________
WITH : (8) SHARED OR NO VOTING POWER

: 6,370,000 shares (Shared)
66,879 shares (None)
________________________________
: (9) SOLE DISPOSITIVE POWER
: (Discretionary Accounts)
: 66,879 shares
________________________________
: (10) SHARED DISPOSITIVE POWER
: 6,370,000 shares

___________________________________________________________________
(11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

6,436,879 shares
___________________________________________________________________
(12) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW 11 EXCLUDES
CERTAIN SHARES
___________________________________________________________________
(13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 11
17.3 %
___________________________________________________________________
(14) TYPE OF REPORTING PERSON
IA
___________________________________________________________________

CUSIP No. 835451105 13D
___________________________________________________________________
(1) NAMES OF REPORTING PERSONS
Longleaf Partners Small-Cap Fund I.D. No. 62-1376170
___________________________________________________________________
(2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP:
(a)
(b) X
___________________________________________________________________
(3) SEC USE ONLY
___________________________________________________________________
(4) SOURCE OF FUNDS
OO: Funds of investment company shareholders
___________________________________________________________________
(5) CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS
REQUIRED PURSUANT TO ITEMS 2(d) or 2(e) [ ]
___________________________________________________________________
(6) CITIZENSHIP OR PLACE OF ORGANIZATION
Massachusetts
___________________________________________________________________
: (7) SOLE VOTING POWER
:
NUMBER OF SHARES BENEFICIALLY : None
OWNED BY EACH REPORTING PERSON ________________________________
WITH : (8) SHARED VOTING POWER

: 6,370,000 shares

________________________________
: (9) SOLE DISPOSITIVE POWER
:
: None
________________________________
: (10) SHARED DISPOSITIVE POWER
: 6,370,000 shares

___________________________________________________________________
(11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

6,370,000 shares
___________________________________________________________________
(12) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW 11 EXCLUDES
CERTAIN SHARES
___________________________________________________________________
(13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 11
17.1 %
___________________________________________________________________
(14) TYPE OF REPORTING PERSON
IV
___________________________________________________________________

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