Ownership Submission
FORM 4
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
Strickland Sharon T
  2. Issuer Name and Ticker or Trading Symbol
SONIC CORP [SONC]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
Vice President
(Last)
(First)
(Middle)
300 JOHNNY BENCH DRIVE
3. Date of Earliest Transaction (Month/Day/Year)
04/29/2010
(Street)

OKLAHOMA CITY, OK 73104
4. If Amendment, Date Original Filed(Month/Day/Year)
6. Individual or Joint/Group Filing(Check Applicable Line)
_X_ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)
2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code
(Instr. 8)
4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)
5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4)
6. Ownership Form: Direct (D) or Indirect (I)
(Instr. 4)
7. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V Amount (A) or (D) Price

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 3)
2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code
(Instr. 8)
5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4, and 5)
6. Date Exercisable and Expiration Date
(Month/Day/Year)
7. Title and Amount of Underlying Securities
(Instr. 3 and 4)
8. Price of Derivative Security
(Instr. 5)
9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 4)
10. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 4)
11. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Non-qualified Stock Option (right to buy) $ 23.08 04/29/2010   D(1)     4,185 04/06/2009 04/06/2013 Common Stock 4,185 $ 0 0 D  
Non-qualified Stock Option (right to buy) $ 13.2 04/29/2010   A(1)   1,992   04/29/2011 04/06/2013 Common Stock 1,992 $ 0 1,992 D  
Non-qualified Stock Option (right to buy) $ 22.54 04/29/2010   D(1)     5,009 04/05/2010 04/05/2014 Common Stock 5,009 $ 0 0 D  
Non-qualified Stock Option (right to buy) $ 13.2 04/29/2010   A(1)   2,385   04/29/2011 04/05/2014 Common Stock 2,385 $ 0 2,385 D  
Incentive Stock Option (right to buy) $ 21.07 04/29/2010   (1) D(1)     9,309 08/17/2008 08/17/2015 Common Stock 9,309 $ 0 0 D  
Non-qualified Stock Option (right to buy) $ 13.2 04/29/2010   A(1)   5,475   04/29/2011 08/17/2015 Common Stock 5,475 $ 0 5,475 D  
Non-qualified Stock Option (right to buy) $ 22.24 04/29/2010   D(1)     9,927   (2) 01/10/2015 Common Stock 9,927 $ 0 0 D  
Incentive Stock Option (right to buy) $ 22.24 04/29/2010   D(1)     13,488   (2) 01/10/2015 Common Stock 13,488 $ 0 0 D  
Non-qualified Stock Option (right to buy) $ 13.2 04/29/2010   A(1)   12,007     (3) 01/10/2015 Common Stock 12,007 $ 0 12,007 D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
Strickland Sharon T
300 JOHNNY BENCH DRIVE
OKLAHOMA CITY, OK 73104
      Vice President  

Signatures

 Carolyn C. Cummins for Sharon T. Strickiland   05/11/2010
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1) On April 29, 2010, the issuer canceled, pursuant to the issuer's voluntary stock option exchange program, options previously granted to the reporting person. In exchange for the options canceled, the reporting person received a fewer number of options to purchase common stock.
(2) One-third of the total number of options granted vest on each of the first three anniversary dates following the grant date.
(3) Two-thirds of the options granted will vest on April 29, 2011, and one-third of the options granted will vest on January 10, 2012.

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