- Statement of Changes in Beneficial Ownership (4)

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	OMB APPROVAL OMB Number: 3235-0287 Expires: February 28, 2011 Estimated average burden hours per response... 0.5
	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(f) of the Investment Company Act of 1940

1. Name and Address of Reporting Person ^* INMOBILIARIA CARSO S A DE C V	2. Issuer Name and Ticker or Trading Symbol Bronco Drilling Company, Inc. [ BRNC ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director __ X __ 10% Owner _____ Officer (give title below) __ X __ Other (specify below) Affiliates - see Exhibit 99-1
(Last) (First) (Middle) INSURGENTES SUR #3500, PB, COL. PENA POBRE, DELEGACION TLALPAN, CP	3. Date of Earliest Transaction (MM/DD/YYYY) 1/12/2009
(Street) MEXICO D.F., O5 14060 (City) (State) (Zip)	4. If Amendment, Date Original Filed (MM/DD/YYYY)	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. Trans. Date	2A. Deemed Execution Date, if any	3. Trans. 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. Trans. Date	2A. Deemed Execution Date, if any	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, par value $0.01 per share("Bronco Shares")	1/12/2009		P		300	A	$5.7500	3393300	D
Bronco Shares	1/12/2009		P		1900	A	$5.7600	3395200	D
Bronco Shares	1/12/2009		P		1600	A	$5.7700	3396800	D
Bronco Shares	1/12/2009		P		3300	A	$5.7800	3400100	D
Bronco Shares	1/12/2009		P		200	A	$5.7850	3400300	D
Bronco Shares	1/12/2009		P		1800	A	$5.7900	3402100	D
Bronco Shares	1/12/2009		P		1300	A	$5.8000	3403400	D
Bronco Shares	1/12/2009		P		100	A	$5.8100	3403500	D
Bronco Shares	1/12/2009		P		10	A	$5.8200	3403510	D
Bronco Shares	1/12/2009		P		2390	A	$5.8300	3405900	D
Bronco Shares	1/12/2009		P		500	A	$5.8400	3406400	D
Bronco Shares	1/12/2009		P		1185	A	$5.8500	3407585	D
Bronco Shares	1/12/2009		P		1100	A	$5.8600	3408685	D
Bronco Shares	1/12/2009		P		1416	A	$5.8700	3410101	D
Bronco Shares	1/12/2009		P		1784	A	$5.8800	3411885	D
Bronco Shares	1/12/2009		P		1600	A	$5.8900	3413485	D
Bronco Shares	1/12/2009		P		2000	A	$5.9000	3415485	D
Bronco Shares	1/12/2009		P		2103	A	$5.9100	3417588	D
Bronco Shares	1/12/2009		P		5330	A	$5.9200	3422918	D
Bronco Shares	1/12/2009		P		1816	A	$5.9300	3424734	D
Bronco Shares	1/12/2009		P		1236	A	$5.9400	3425970	D
Bronco Shares	1/12/2009		P		100	A	$5.9450	3426070	D
Bronco Shares	1/12/2009		P		1687	A	$5.9500	3427757	D
Bronco Shares	1/12/2009		P		500	A	$5.9600	3428257	D
Bronco Shares	1/12/2009		P		2100	A	$5.9700	3430357	D
Bronco Shares	1/12/2009		P		788	A	$5.9800	3431145	D
Bronco Shares	1/12/2009		P		5098	A	$5.9900	3436243	D
Bronco Shares	1/12/2009		P		9757	A	$6.0000	3446000	D

*Table II - Derivative Securities Beneficially Owned ( e.g.* , puts, calls, warrants, options, convertible securities)**
1. Title of Derivate Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Trans. Date	3A. Deemed Execution Date, if any	4. Trans. 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		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 of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
1. Title of Derivate Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Trans. Date	3A. Deemed Execution Date, if any	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)			11. Nature of Indirect Beneficial Ownership (Instr. 4)

Explanation of Responses:

Remarks:
See attached Exhibit 99-1 to Form 4 which is hereby incorporated herein by reference.

Exhibits:

99.1 Explanation of Responses

Reporting Owners
Reporting Owner Name / Address	Relationships
Reporting Owner Name / Address	Director	10% Owner	Officer	Other
INMOBILIARIA CARSO S A DE C V INSURGENTES SUR #3500, PB COL. PENA POBRE, DELEGACION TLALPAN, CP MEXICO D.F., O5 14060		X		Affiliates - see Exhibit 99-1

Signatures
Eduardo Valdes Acra, Attorney-in-Fact		1/14/2009
^** 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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