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

OMB APPROVAL

OMB Number:			3235-0104
Estimated average burden
hours per response:			0.5

1. Name and Address of Reporting Person^*

GLACE JOSEPH R

(Last)

(First)

(Middle)

10 SOUTH DEARBORN STREET

54TH FLOOR

(Street)

CHICAGO

60603

(City)

(State)

(Zip)

2. Date of Event Requiring Statement (Month/Day/Year)
03/12/2012

3. Issuer Name and Ticker or Trading Symbol
EXELON CORP [ EXC ]

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

	Director	10% Owner
X	Officer (give title below)	Other (specify below)
	SVP and Chief Risk Officer

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	613	D
Common Stock (ESPP)	741	D
Common stock (IRA)	200	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)
Restricted stock units- 07/01/2008	⁽¹⁾	⁽¹⁾	Common stock	3,500	⁽¹⁾	D
Performance Shares - Stock Units	⁽²⁾	⁽²⁾	Common Stock	1,294	⁽²⁾	D
Restricted stock units- key manager program	⁽³⁾	⁽³⁾	Common Stock	1,171	⁽³⁾	D
Deferred Comp. Phantom Shares	⁽⁴⁾	⁽⁴⁾	Common stock	400	⁽⁴⁾	D
NQ Stock Options - 01/26/2004	⁽⁵⁾	⁽⁵⁾	Common Stock	10,327	$32.54	D
NQ Stock Options - 01/24/2005	⁽⁵⁾	⁽⁵⁾	Common Stock	7,600	$42.85	D
NQ Stock Options - 01/23/2006	⁽⁵⁾	⁽⁵⁾	Common Stock	6,700	$58.55	D
NQ Stock Options - 01/22/2007	⁽⁵⁾	⁽⁵⁾	Common Stock	4,000	$59.96	D
NQ Stock Options - 01/28/2008	⁽⁵⁾	⁽⁵⁾	Common Stock	3,400	$73.29	D
NQ Stock Options - 01/26/2009	⁽⁵⁾	⁽⁵⁾	Common Stock	4,300	$56.51	D
NQ Stock Options - 01/25/2010	⁽⁵⁾	⁽⁵⁾	Common Stock	3,800	$46.09	D

Explanation of Responses:

1. Restricted stock units granted under the Issuer's Long Term Incentive Plan. Restricted stock units may be settled on a 1 for 1 basis in shares of Exelon common stock. 100% of the shares will vest on 07/01/2012.

2. Performance Shares awarded pursuant to the Exelon Long Term Incentive Plan. 1/3 of the shares awarded vested immediately upon receipt. The remaining shares vest in 1/3 increments on each of the first and second anniversaries of the grant date.

3. Restricted stock units awarded pursuant to the Exelon Long Term Incentive Plan. 1/3 of the shares awarded vest on each of the first, second and third anniversaries of the grant date. Under certain circumstances some or all of the vested shares may be settled in cash on a 1 for 1 basis based on the cash value of the underlying stock on the date of vesting.

4. Phantom shares held in a multi-fund deferred compensation plan to be settled for cash upon the reporting person's termination of employment for any reason on a 1:1 basis. Shares are acquired through regular periodic contributions, company matching contributions, and the automatic reinvestment of dividends.

5. Non qualified employee stock options, awarded pursuant to the Exelon Long Term Incentive Plan. Options vest in 1/4 increments on each of the first four anniversaries of the grant date, referenced in column one, and expire on the tenth anniversay of the grant date.

Remarks:

	Scott N. Peters, attorney in fact for Joseph R. Glace	03/13/2012
	** 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.