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^*

SNYDER CAROLE B

(Last)

(First)

(Middle)

76 SOUTH MAIN STREET

(Street)

AKRON

44308

(City)

(State)

(Zip)

2. Issuer Name and Ticker or Trading Symbol
FIRSTENERGY CORP [ FE ]

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

	Director	10% Owner
X	Officer (give title below)	Other (specify below)
	Senior Vice President

3. Date of Earliest Transaction (Month/Day/Year)
03/01/2007

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	03/01/2007		M		11,100⁽¹⁾	A	$29.71	26,171	D
Common Stock	03/01/2007		M		9,150⁽¹⁾	A	$38.76	35,321	D
Common Stock	03/01/2007		M		9,150⁽¹⁾	D	$62.006	26,171	D
Common Stock	03/01/2007		M		11,100⁽¹⁾	D	$62.006	15,071	D
Common Stock								1,309.822	I	by Savings Plan

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)
Phantom 3/05D	$1							02/25/2005	03/01/2008	Common Stock	1,618.492		1,618.492	D
Phantom 3/06D	$1							03/02/2006	03/02/2009	Common Stock	3,393.648		3,393.648	D
Phantom 3/07D	$1⁽²⁾	03/01/2007		A		2,759.28⁽³⁾		03/01/2007	03/01/2010	Common Stock	2,759.28	$62.89	6,648.18	D
RSUP1	$1							03/01/2008	03/01/2008	Common Stock	2,802.083		2,802.083	D
RSUP4	$1							03/01/2009	03/01/2009	Common Stock	2,262.87		2,262.87	D
RSUP6	$1⁽²⁾	03/01/2007		A		1,773		03/01/2010	03/01/2010	Common Stock	1,773	$62.25	1,773	D
Stock Options (Right to buy)	$29.71	03/01/2007		M			11,100⁽¹⁾	03/01/2004	03/01/2013	Common Stock	11,100	$62.006	0	D
Stock Options (Right to buy)	$38.76	03/01/2007		M			9,150⁽¹⁾	03/01/2005	03/01/2014	Common Stock	9,150	$62.006	9,150	D

Explanation of Responses:

1. This stock option was exercised in accordance with a 10b5-1 Plan signed by Carole Snyder on 12/20/2005.

2. 1 for 1

3. This award was based on the average of the daily closing prices of FirstEnergy during the month of February, 2007 - 2,299.40 of these shares are vested (i.e., non-forfeited) immediately; 459.88 of these shares become vested (i.e., non-forfeited) on 3/1/2010.

	Edward J. Udovich, POA	03/05/2007
	** 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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