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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1. Name and Address of Reporting Person * FAIRFAX FINANCIAL HOLDINGS LTD/ CAN   2. Issuer Name and Ticker or Trading Symbol SANDRIDGE ENERGY INC [SD] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director __X__ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) 95 WELLINGTON STREET WEST, SUITE 800 3. Date of Earliest Transaction (Month/Day/Year) 04/20/2010 (Street) TORONTO, A6 M5J 2N7 4. If Amendment, Date Original Filed(Month/Day/Year) 6. Individual or Joint/Group Filing(Check Applicable Line) ___ Form filed by One Reporting Person _X_ 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, $0.001 par value (Common Shares) 04/20/2010   P   7,000,000 D $ 7.15 4,203,600 I See footnote (1)

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

See footnote (6)

(2)

04/20/2010

P

725,000

(3)

(4)

Common Shares

9,048,363

$ 116.5

725,000

I

See footnote (5)

Preferred Shares

(2)

04/21/2010

P

72,500

(3)

(4)

Common Shares

904,837

$ 117

797,500

I

See footnote (5)

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
FAIRFAX FINANCIAL HOLDINGS LTD/ CAN 95 WELLINGTON STREET WEST SUITE 800 TORONTO, A6 M5J 2N7		X
WATSA V PREM ET AL 95 WELLINGTON STREET WEST SUITE 800 TORONTO, A6 M5J 2N7		X
1109519 ONTARIO LTD 95 WELLINGTON STREET WEST SUITE 800 TORONTO, A6 M5J 2N7		X
SIXTY TWO INVESTMENT CO LTD 1600 CATHEDRAL PLACE 925 WEST GEORGIA ST. VANCOUVER, A1 V6C 3L3		X
810679 ONTARIO LTD 95 WELLINGTON STREET WEST SUITE 800 TORONTO, A6 M5J 2N7		X
TIG INSURANCE CO 250 COMMERCIAL STREET SUITE 500 MANCHESTER, NH 03101		X
UNITED STATES FIRE INSURANCE CO 305 MADISON AVE MORRISTOWN, NJ 07962		X
NORTH RIVER INSURANCE CO 305 MADISON AVE MORRISTOWN, NJ 07962		X
ODYSSEY AMERICA REINSURANCE CORP 300 FIRST STAMFORD PLACE STAMFORD, CT 06902		X

Signatures

/s/ Paul Rivett, Vice President and Chief Legal Officer		04/22/2010
**Signature of Reporting Person		Date
/s/ V. Prem Watsa		04/22/2010
**Signature of Reporting Person		Date
/s/ V. Prem Watsa, President		04/22/2010
**Signature of Reporting Person		Date
/s/ V. Prem Watsa, President		04/22/2010
**Signature of Reporting Person		Date
/s/ V. Prem Watsa, President		04/22/2010
**Signature of Reporting Person		Date
/s/ Joseph Zampella, Vice President and Controller		04/22/2010
**Signature of Reporting Person		Date
/s/ Paul Bassaline, Vice President		04/22/2010
**Signature of Reporting Person		Date
/s/ Paul Bassaline, Vice President		04/22/2010
**Signature of Reporting Person		Date
/s/ Kirk M. Reische, Vice President		04/22/2010
**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)	Following the transactions reported herein, 277,000 Common Shares are held by V. Prem Watsa and the remaining Common Shares are held by subsidiaries of Fairfax Financial Holdings Limited, including, following the transactions reported herein, 897,600 Common Shares held by Odyssey America Reinsurance Corporation. United States Fire Insurance Company no longer holds any Common Shares.
(2)	Each Preferred Share is convertible into 12.4805 Common Shares, subject to adjustment under certain circumstances.
(3)	The Preferred Shares are convertible at any time at the holder's option.
(4)	After February 20, 2014, Sandridge Energy Inc. may cause all outstanding Preferred Shares to automatically convert into Common Shares at the then-prevailing conversion rate if certain conditions are met.
(5)	The Preferred Shares are held by subsidiaries of Fairfax Financial Holdings Limited, including, following the transactions reported herein, 69,000 Preferred Shares held by TIG Insurance Company, 88,800 Preferred Shares held by The North River Insurance Company and its subsidiaries, and 487,600 Preferred Shares held by Odyssey America Reinsurance Corp. and its subsidiaries.
(6)	8.5% Convertible Perpetual Preferred Stock (Preferred Shares)

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