- Initial Statement of Beneficial Ownership (3)

FORM 3	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES	OMB APPROVAL OMB Number: 3235-0104 Expires: February 28, 2011 Estimated average burden hours per response... 0.5
	Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

1. Name and Address of Reporting Person ^*

Meissner Laurel G.

2. Date of Event Requiring Statement (MM/DD/YYYY) 6/1/2009

3. Issuer Name and Ticker or Trading Symbol

AON CORP [AOC]

(Last) (First) (Middle)

AON CORPORATION - CORPORATE LAW DEPT, 200 EAST RANDOLPH STREET, 8TH FLOOR

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

_____ Director _____ 10% Owner
___ X ___ Officer (give title below) _____ Other (specify below)
SVP & Global Controller /

(Street)

CHICAGO, IL 60601

(City) (State) (Zip)

5. If Amendment, Date Original Filed (MM/DD/YYYY)

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	0	D

*Table II - Derivative Securities Beneficially Owned ( e.g.* , puts, calls, warrants, options, convertible securities)**
1. Title of Derivate Security (Instr. 4)	2. Date Exercisable and Expiration Date (MM/DD/YYYY)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
1. Title of Derivate Security (Instr. 4)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	4. Conversion or Exercise Price of Derivative Security		6. Nature of Indirect Beneficial Ownership (Instr. 5)
Restricted Stock Unit Award (Right to Receive)	⁽¹⁾ ⁽²⁾	2/20/2014	Common Stock	2542	⁽³⁾	D
Employee Stock Option (Right to Buy)	⁽⁴⁾ ⁽⁵⁾	3/19/2015	Common Stock	9248	$38.93	D

Explanation of Responses:
( 1)	Awards will vest in accordance with the Aon Stock Incentive Plan as follows: 25% of the awards will vest on each of the second through fifth anniversaries of the date of grant.
( 2)	The date of grant was February 20, 2009.
( 3)	The restricted stock unit award converts to shares of common stock on a 1-for-1 basis.
( 4)	Options will vest in accordance with the Aon Stock Incentive Plan as follows: one-third of the options will vest on each of the first through third anniversaries of the date of grant.
( 5)	The date of grant was March 19, 2009.

Reporting Owners
Reporting Owner Name / Address	Relationships
Reporting Owner Name / Address	Director	10% Owner	Officer	Other
Meissner Laurel G. AON CORPORATION - CORPORATE LAW DEPT 200 EAST RANDOLPH STREET, 8TH FLOOR CHICAGO, IL 60601			SVP & Global Controller

Signatures
/s/ Jennifer L. Kraft - Jennifer L. Kraft pursuant to a power of attorney from Laurel Meissner		6/11/2009
^** 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 control number.

Grafico Azioni AON (NYSE:AOC)
Storico
Da Giu 2024 a Lug 2024

Grafico Azioni AON (NYSE:AOC)
Storico
Da Lug 2023 a Lug 2024

AOC Aon Corp.