| SC 13G | 2016-02-12 | CHILTON INVESTMENT CO LLC | SONIC CORP | 3,122,849 | 6.4% | EDGAR |
| SC 13G/A | 2016-02-11 | VANGUARD GROUP INC | SONIC CORP | 3,677,426 | 7.4% | EDGAR |
| SC 13G/A | 2016-02-10 | PRICE T ROWE ASSOCIATES INC /MD/ | SONIC CORP | 2,017,677 | 4.0% | EDGAR |
| SC 13G/A | 2016-01-27 | BlackRock Inc. | SONIC CORP | 4,725,062 | 9.6% | EDGAR |
| SC 13G/A | 2015-04-10 | LORD, ABBETT & CO. LLC | SONIC CORP | 1,833,063 | 3.4% | EDGAR |
| SC 13G/A | 2015-02-13 | FMR LLC | SONIC CORP | 2,118,067 | 4.0% | EDGAR |
| SC 13G | 2015-02-13 | LORD, ABBETT & CO. LLC | SONIC CORP | 3,678,291 | 6.9% | EDGAR |
| SC 13G/A | 2015-02-11 | PRICE T ROWE ASSOCIATES INC /MD/ | SONIC CORP | 2,737,907 | 5.1% | EDGAR |
| SC 13G/A | 2015-02-11 | VANGUARD GROUP INC | SONIC CORP | 3,438,522 | 6.4% | EDGAR |
| SC 13G/A | 2015-01-23 | BlackRock Inc. | SONIC CORP | 4,531,078 | 8.5% | EDGAR |
| SC 13G/A | 2014-10-10 | FMR LLC | SONIC CORP | 3,635,016 | 6.7% | EDGAR |
| SC 13G/A | 2014-02-14 | FMR LLC | SONIC CORP | 6,966,699 | 12.5% | EDGAR |
| SC 13G/A | 2014-02-13 | PRICE T ROWE ASSOCIATES INC /MD/ | SONIC CORP | 3,596,317 | 6.3% | EDGAR |
| SC 13G/A | 2014-02-11 | VANGUARD GROUP INC | SONIC CORP | 3,245,126 | 5.8% | EDGAR |
| SC 13G/A | 2014-01-30 | BlackRock Inc. | SONIC CORP | 4,740,306 | 8.4% | EDGAR |
| SC 13G/A | 2013-04-10 | Invesco Ltd. | SONIC CORP | 2,539,750 | 4.6% | EDGAR |
| SC 13G/A | 2013-02-14 | FMR LLC | SONIC CORP | 7,773,711 | 13.4% | EDGAR |
| SC 13G/A | 2013-02-12 | VANGUARD GROUP INC | SONIC CORP | 3,206,198 | 5.8% | EDGAR |
| SC 13G/A | 2013-02-11 | PRICE T ROWE ASSOCIATES INC /MD/ | SONIC CORP | 3,581,600 | 6.3% | EDGAR |
| SC 13G/A | 2013-02-11 | Invesco Ltd. | SONIC CORP | 4,539,159 | 8.0% | EDGAR |