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 *
HUDSON J CLIFFORD
  2. Issuer Name and Ticker or Trading Symbol
SONIC CORP [SONC]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
__X__ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
Chief Executive Officer
(Last)
(First)
(Middle)
300 JOHNNY BENCH DRIVE
3. Date of Earliest Transaction (Month/Day/Year)
04/20/2010
(Street)

OKLAHOMA CITY, OK 73104
4. If Amendment, Date Original Filed(Month/Day/Year)
04/21/2010
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
Common Stock 04/20/2010   M   66,700 A $ 5.71 66,700 D  
Common Stock 04/20/2010   S   66,700 D $ 12.254 (1) 0 D  
Common Stock 04/21/2010(2)   M   41,789 A $ 5.71 41,789 D  

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) $ 5.71 04/20/2010   M     66,700 04/25/2003 04/25/2010 Common Stock 66,700 $ 0 24,275 D  
Non-qualified Stock Option (right to buy) $ 5.71 04/21/2010(2)   M     24,275 04/25/2003 04/25/2010 Common Stock 24,275 $ 0 0 D  
Incentive Stock Option (right to buy) $ 5.71 04/21/2010(2)   M     17,514 04/25/2003 04/25/2010 Common Stock 17,514 $ 0 0 D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
HUDSON J CLIFFORD
300 JOHNNY BENCH DRIVE
OKLAHOMA CITY, OK 73104
  X     Chief Executive Officer  

Signatures

 /s/ J. Clifford Hudson   04/21/2010
**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) This price represents the weighted average sales price. The shares sold at prices ranging from $12.155 to $12.3867 per share. The reporting person will provide full details regarding the number of shares sold at each separate price upon the SEC's request.
(2) Form 4 being amended to correct the date the exercise of expiring options was completed.

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.

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