SEC FORM 3

SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

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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1. Name and Address of Reporting Person^*

Houston Julia A

(Last)

(First)

(Middle)

1155 PERIMETER CENTER WEST

(Street)

ATLANTA

30338

(City)

(State)

(Zip)

2. Date of Event Requiring Statement (Month/Day/Year)
05/31/2009

3. Issuer Name and Ticker or Trading Symbol
MIRANT CORP [ MIR ]

4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director	10% Owner
X	Officer (give title below)	Other (specify below)
	SVP and General Counsel

5. 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 Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
Common Stock	34,841⁽¹⁾	D

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
1. Title of Derivative Security (Instr. 4)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
Stock Options	⁽²⁾	01/13/2016	Common Stock	2,537	$24.64	D
Stock Options	⁽²⁾	02/17/2016	Common Stock	2,495	$25.05	D
Stock Options	⁽³⁾	03/08/2012	Common Stock	3,862	$37.71	D
Stock Options	⁽⁴⁾	03/07/2013	Common Stock	9,125	$37.02	D
Stock Options	⁽⁵⁾	03/03/2019	Common Stock	25,006	$10.4	D

Explanation of Responses:

1. Includes 28,650 restricted stock units that are subject to time-based vesting. Each restricted stock unit represents a contingent right to receive one share of Mirant Corporation common stock.

2. The stock options are fully vested.

3. Includes 1,931 stock options that are fully vested and 1,931 stock options which will vest on 3/08/10.

4. Includes 3,042 stock options that are fully vested and 6,083 stock options which will vest 50% on 3/07/2010 and 50% on 3/07/2011.

5. The stock options have a three year vesting period, 33 1/3% on 3/03/2010, 33 1/3% on 3/03/2011 and 33 1/3% on 3/03/2012.

Remarks:

Exhibit List 24.1 - Power of Attorney dated May 27, 2009

	/s/ David E. Howard, Attorney-in-Fact	06/08/2009
	** 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 5 (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.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.