| Filed On | Filing |
|---|---|
| 18 Dec 2017 | SONIC CORP - DEF 14A |
| 08 Dec 2016 | SONIC CORP - DEF 14A |
| 14 Dec 2015 | DEFINITIVE PROXY |
| 15 Dec 2014 | DEF 14A |
| 02 Dec 2013 | DEFINITIVE NOTICE & PROXY STATEMENT |
| 03 Dec 2012 | SONIC CORP. - DEF 14A |
| 05 Dec 2011 | DEFINITIVE NOTICE & PROXY STATEMENT |
| 22 Nov 2010 | DEFINITIVE PROXY STATEMENT |
| 03 Dec 2009 | DEFINITIVE PROXY STATEMENT |
| 05 Dec 2008 | SONIC CORP DEF 14A 1-15-2009 |
| 07 Dec 2007 | DEFINITIVE NOTICE AND PROXY STATEMENT |
| 20 Dec 2006 | FY06 PROXY STATEMENT |
| 16 Dec 2005 | FY05 PROXY STATEMENT |
| 16 Dec 2004 | FY04 PROXY |
| 15 Dec 2003 | FY03 PROXY |
| 16 Dec 2002 | DEF 14A |
| 14 Dec 2001 | DEF 14A |
| 20 Dec 2000 | DEFINITIVE PROXY STATEMENT |
| 16 Dec 1999 | DEF 14A |
| 18 Dec 1998 | DEF 14A |
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