<SEC-DOCUMENT>0000947871-18-000758-index.html : 20180925
<SEC-HEADER>0000947871-18-000758.hdr.sgml : 20180925
<ACCEPTANCE-DATETIME>20180925104356
ACCESSION NUMBER:		0000947871-18-000758
CONFORMED SUBMISSION TYPE:	DEFA14A
PUBLIC DOCUMENT COUNT:		2
FILED AS OF DATE:		20180925
DATE AS OF CHANGE:		20180925
EFFECTIVENESS DATE:		20180925

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			SONIC CORP
		CENTRAL INDEX KEY:			0000868611
		STANDARD INDUSTRIAL CLASSIFICATION:	RETAIL-EATING PLACES [5812]
		IRS NUMBER:				731371046
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0816

	FILING VALUES:
		FORM TYPE:		DEFA14A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-18859
		FILM NUMBER:		181085041

	BUSINESS ADDRESS:	
		STREET 1:		300 JOHNNY BENCH DRIVE
		CITY:			OKLAHOMA CITY
		STATE:			OK
		ZIP:			73104
		BUSINESS PHONE:		4052255000

	MAIL ADDRESS:	
		STREET 1:		300 JOHNNY BENCH DRIVE
		CITY:			OKLAHOMA CITY
		STATE:			OK
		ZIP:			73104
</SEC-HEADER>
<DOCUMENT>
<TYPE>DEFA14A
<SEQUENCE>1
<FILENAME>ss108338_8k.htm
<DESCRIPTION>CURRENT REPORT
<TEXT>
Document 1 - file: ss108338_8k.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.1
<SEQUENCE>2
<FILENAME>ss108338_ex9901.htm
<DESCRIPTION>PRESS RELEASE
<TEXT>
Document 2 - file: ss108338_ex9901.htm

</DOCUMENT>
</SEC-DOCUMENT>