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	OMB APPROVAL OMB Number: 3235-0287 Estimated average burden hours per response: 0.5
	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* COOK JEFF (Last) (First) (Middle) 777 WEST ROSEDALE STREET SUITE 2100 (Street) FORT WORTH TX 76104 (City) (State) (Zip)	2. Issuer Name and Ticker or Trading Symbol QUICKSILVER RESOURCES INC [ KWK ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) Director 10% Owner X Officer (give title below) Other (specify below) Senior VP of Operations
	3. Date of Earliest Transaction (Month/Day/Year) 02/08/2005
	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)
			Code	V	Amount	(A) or (D)	Price
Common Stock, $.01 par value	02/08/2005		A		4,375	A	(1)	177,555	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)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Common Stock, $.01 par value(2)	$8.02							12/04/2002(3)	12/04/2006	Common Stock, $.01 par value	4,166		4,166	D
Common Stock, $.01 par value(2)	$11.04							02/11/2004(4)	02/11/2008	Common Stock, $.01 par value	9,180		9,180	D
Common Stock, $.01 par value(2)	$16.515							01/07/2005(5)	01/07/2010	Common Stock, $.01 par value	27,340		27,340	D
Common Stock, $.01 par value(2)	$35.75							12/21/2005(6)	12/21/2010	Common Stock, $.01 par value	8,240		8,240	D

Explanation of Responses:

1. Not applicable.

2. Represents a right to buy.

3. The stock option vests in three equal annual installments beginning on December 4, 2002, with full vesting on December 4, 2004.

4. The stock option vests in three equal annual installments beginning on February 11, 2004, with full vesting on February 11, 2006.

5. The stock option vests in five equal annual installments beginning on January 7, 2005, with full vesting on January 7, 2009.

6. The stock option vests in three equal annual installments beginning on December 21, 2005, with full vesting on December 21, 2007.

	Jeff Cook	02/10/2005
	** 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).
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