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^*

COOK JEFF

(Last)

(First)

(Middle)

777 WEST ROSEDALE STREET

SUITE 300

(Street)

FORT WORTH

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)
09/02/2004

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, $.01 par value	09/02/2004		S		100	D	$29.66	173,080⁽¹⁾	D
Common Stock, $.01 par value	09/02/2004		S		100	D	$29.67	172,980	D
Common Stock, $.01 par value	09/02/2004		S		14,100	D	$29.69	158,880	D
Common Stock, $.01 par value	09/02/2004		S		23,900	D	$29.7	134,980	D
Common Stock, $.01 par value	09/02/2004		S		2,900	D	$29.71	132,080	D
Common Stock, $.01 par value	09/02/2004		S		1,600	D	$29.72	130,480	D
Common Stock, $.01 par value	09/02/2004		S		8,600	D	$29.73	121,880	D
Common Stock, $.01 par value	09/02/2004		S		9,600	D	$29.74	112,280	D
Common Stock, $.01 par value	09/02/2004		S		6,400	D	$29.75	105,880	D
Common Stock, $.01 par value	09/02/2004		S		700	D	$29.76	105,180	D
Common Stock, $.01 par value	09/02/2004		S		400	D	$29.78	104,780	D
Common Stock, $.01 par value	09/02/2004		S		500	D	$29.79	104,280	D
Common Stock, $.01 par value	09/02/2004		S		1,100	D	$29.8	103,180	D
Common Stock, $.01 par value	09/02/2004		S		5,700	D	$29.9	97,480	D
Common Stock, $.01 par value	09/02/2004		S		800	D	$29.91	96,680	D
Common Stock, $.01 par value	09/02/2004		S		1,600	D	$29.98	95,080	D
Common Stock, $.01 par value	09/03/2004		S		6,600	D	$29.8	88,480	D
Common Stock, $.01 par value	09/03/2004		S		5,900	D	$29.83	82,580	D
Common Stock, $.01 par value	09/03/2004		S		800	D	$29.84	81,780	D
Common Stock, $.01 par value	09/03/2004		S		1,500	D	$29.85	80,280	D
Common Stock, $.01 par value	09/03/2004		S		800	D	$29.86	79,480	D
Common Stock, $.01 par value	09/03/2004		S		900	D	$29.87	78,580	D
Common Stock, $.01 par value	09/03/2004		S		4,700	D	$29.88	73,880	D
Common Stock, $.01 par value	09/03/2004		S		9,900	D	$29.89	63,980	D
Common Stock, $.01 par value	09/03/2004		S		5,800	D	$29.9	58,180	D
Common Stock, $.01 par value	09/03/2004		S		700	D	$29.91	57,480	D
Common Stock, $.01 par value	09/03/2004		S		1,500	D	$29.92	55,980	D
Common Stock, $.01 par value	09/03/2004		S		6,600	D	$29.93	49,380	D
Common Stock, $.01 par value	09/07/2004		X		8,334	A	$8.02	57,714	D
Common Stock, $.01 par value	09/07/2004		X		200,000	A	$3.5625	257,714	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)
Stock Option⁽²⁾	$16.515⁽³⁾							01/07/2005⁽⁴⁾	01/07/2010	Common Stock, $.01 par value	27,340⁽³⁾		27,340⁽³⁾	D
Stock Option⁽²⁾	$11.04⁽⁵⁾							02/11/2004⁽⁶⁾	02/11/2008	Common Stock, $.01 par value	9,180⁽⁵⁾		9,180⁽⁵⁾	D
Stock Option⁽²⁾	$8.02⁽⁷⁾	09/07/2004		X			8,334	12/04/2004⁽⁸⁾	12/04/2006	Common Stock, $.01 par value	4,166⁽⁷⁾	⁽⁹⁾	4,166⁽⁷⁾	D
Stock Option⁽²⁾	$3.5625⁽¹⁰⁾	09/07/2004		X			200,000	07/01/2001⁽¹¹⁾	07/01/2005	Common Stock, $.01 par value	200,000⁽¹⁰⁾	⁽⁹⁾	0⁽¹⁰⁾	D

Explanation of Responses:

1. On June 30, 2004, the common stock of Quicksilver Resources split 2-for-1 effected in the form of a stock dividend, resulting in the reporting person's acquisition of 86,590 additional shares of common stock.

2. Represents a right to buy.

3. This option was previously reported as covering 13,670 shares at an exercise price of $33.03 per share, but was adjusted to reflect the stock split on June 30, 2004.

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

5. This option was previously reported as covering 4,590 shares at an exercise price of $22.08 per share, but was adjusted to reflect the stock split on June 30, 2004.

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

7. This option was previously reported as covering 6,250 shares at an exercise price of $16.04 per share, but was adjusted to reflect the stock split on June 30, 2004.

8. The stock option vests in three equal annual installments beginning on December 4, 2002, with full vesting on December 4, 2004. As reported on this Form 4, the reporting person has exercised the stock option for the 8,334 shares that vested as of December 4, 2003. The stock option will vest as to the remaining 4,166 shares on December 4, 2004.

9. Not applicable.

10. This option was previously reported as covering 100,000 shares at an exercise price of $7.125 per share, but was adjusted to reflect the stock split on June 30, 2004.

11. The stock option vested in three equal annual installments beginning on July 1, 2001, with full vesting on July 1, 2003.

	Jeff Cook	09/07/2004
	** 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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