SEC FORM 4

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

1. Name and Address of Reporting Person^*

RILEY JAMES B

(Last)

(First)

(Middle)

C/O CSK AUTO CORP

645 E. MISSOURI AVE, SUITE 450

(Street)

PHOENIX

85012

(City)

(State)

(Zip)

2. Issuer Name and Ticker or Trading Symbol
CSK AUTO CORP [ CAO ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director	10% Owner
X	Officer (give title below)	Other (specify below)
	Senior Vice President - CFO

3. Date of Earliest Transaction (Month/Day/Year)
12/22/2005

4. If Amendment, Date of 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

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock	12/22/2005		P		10,400	A	$14.4631	15,400⁽¹⁾	D

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 Securities Underlying Derivative Security (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: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
Non-qualified stock options	$15.025							⁽²⁾	10/24/2012	Common Stock	40,000		40,000	D
Incentive Bonus Unit	$20							⁽³⁾	⁽³⁾	Common Stock	125,000		125,000	D

Explanation of Responses:

1. Includes 5,000 shares of Restricted Common Stock, which, subject to certain conditions, shall vest at the rate of 1/3 on each of 10/24/2006, 10/24/2007 and 10/24/2008 respectively.

2. Grant of stock options upon hire as new Senior Vice President and Chief Financial Officer of the Company. This option grant becomes vested and exercisable at the rate of one-third on 10/24/2006, one-third on 10/24/2007, and one-third on 10/24/2008.

3. The reported incentive bonus units will become vested with respect to 25% of the total number of incentive bonus units granted on October 24 of each of the calendar years 2007, 2008, 2009 and 2010, and will entitle the reporting person to receive a distribution of cash equal in value to the amount by which the then value of the Company's common stock exceeds the base value of $20.00 (which is subject to adjustment in the event of a change in the Company's capitalization). In the event the formula decribed above results in no payment to the reporting person on a vesting date, then the incentive bonus units vesting on such date will be forfeited without consideration.

Remarks:

	James B. Riley by /s/ James B. Riley	12/23/2005
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* 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).
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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