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*
Mize Mark
(Last) (First) (Middle)
1000 LOUISIANA
SUITE 5600
(Street)
HOUSTON TX 77002
(City) (State) (Zip)
2. Issuer Name and Ticker or Trading Symbol
PETROHAWK ENERGY CORP [ HK ] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director 10% Owner
X Officer (give title below) Other (specify below)
EVP - CFO, Treasurer
3. Date of Earliest Transaction (Month/Day/Year)
03/21/2011
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 03/21/2011 M 15,000 A $10.23 152,007(1) D
Common Stock 03/21/2011 M 50,000 A $18.08 202,007 D
Common Stock 03/21/2011 M 48,666 A $15.23 250,673 D
Common Stock 03/21/2011 S 1,600 D $22.66 249,073 D
Common Stock 03/21/2011 S 6,180 D $22.67 242,893 D
Common Stock 03/21/2011 S 1,900 D $22.6701 240,993 D
Common Stock 03/21/2011 S 1,100 D $22.6765 239,893 D
Common Stock 03/21/2011 S 800 D $22.6788 239,093 D
Common Stock 03/21/2011 S 4,500 D $22.68 234,593 D
Common Stock 03/21/2011 S 1,000 D $22.6801 233,593 D
Common Stock 03/21/2011 S 3,400 D $22.6844 230,193 D
Common Stock 03/21/2011 S 6,932 D $22.69 223,261 D
Common Stock 03/21/2011 S 3,518 D $22.6901 219,743 D
Common Stock 03/21/2011 S 2,300 D $22.6973 217,443 D
Common Stock 03/21/2011 S 2,600 D $22.6984 214,843 D
Common Stock 03/21/2011 S 9,038 D $22.7 205,805 D
Common Stock 03/21/2011 S 2,300 D $22.7016 203,505 D
Common Stock 03/21/2011 S 582 D $22.71 202,923 D
Common Stock 03/21/2011 S 2,300 D $22.7101 200,623 D
Common Stock 03/21/2011 S 7,350 D $22.72 193,273 D
Common Stock 03/21/2011 S 1,200 D $22.7266 192,073 D
Common Stock 03/21/2011 S 640 D $22.73 191,433 D
Common Stock 03/21/2011 S 2,500 D $22.7352 188,933 D
Common Stock 03/21/2011 S 800 D $22.75 188,133 D
Common Stock 03/21/2011 S 5,600 D $22.76 182,533 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
Employee Stock Option (right to buy) $10.23 03/21/2011 M 15,000 08/11/2009(2) 08/11/2016 Common Stock 15,000 $0 0 D
Employee Stock Option (right to buy) $18.08 03/21/2011 M 50,000 02/28/2011(3) 02/28/2018 Common Stock 50,000 $0 0 D
Employee Stock Option (right to buy) $15.23 03/21/2011 M 48,666 (4) 03/02/2019 Common Stock 48,666 $0 24,334 D
Stock Appreciation Right $11.64 03/21/2011 M 30,000 03/02/2010(5) 03/02/2017 Common Stock 30,000 $0 0 D
Explanation of Responses:
1. A review of the reporting person's brokerage account holdings resulted in the discovery that the reporting person's common stock holdings have been overstated by five shares. Accordingly, the reporting person's common stock holdings have been reduced by five shares.
2. The option vested in three equal annual installments beginning August 11, 2007.
3. The option vested in three equal annual installments beginning February 28, 2009.
4. The option vests in three equal annual installments beginning March 2, 2010.
5. The stock appreciation right vested in three equal annual installments beginning March 2, 2008.
Remarks:
This report is one of three. The total number of shares sold by the reporting person on March 21, 2011 was 123,666. The total number of shares sold by the reporting person on March 22, 2011 was 9,382.
David S. Elkouri, Attorney-in-fact 03/23/2011
** 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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