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	OMB APPROVAL OMB Number: 3235-0287 Estimated average burden hours per response: 0.5
	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* Case Gregory C (Last) (First) (Middle) AON CORPORATION - CORPORATE LAW DEPT 200 EAST RANDOLPH STREET, 8TH FLOOR (Street) CHICAGO IL 60601 (City) (State) (Zip)	2. Issuer Name and Ticker or Trading Symbol Aon plc [ AON ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X Director 10% Owner X Officer (give title below) Other (specify below) President & CEO
	3. Date of Earliest Transaction (Month/Day/Year) 02/18/2016
	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
Class A Ordinary Shares	02/18/2016		A(1)		287,980	A	(1)	669,920	D
Class A Ordinary Shares	02/18/2016		F(2)		131,548	D	$94.57	538,372	D
Class A Ordinary Shares	02/20/2016		M(3)		3,488	A	(3)	541,860	D
Class A Ordinary Shares	02/20/2016		F(4)		1,594	D	$93.58	540,266	D
Class A Ordinary Shares								176,000	I	By Trust
Class A Ordinary Shares								500,000	I	By Grantor Retained Annuity Trust

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
Restricted Share Unit (Right to Receive)	(5)	02/19/2016		A		11,220		02/19/2017(6)	02/19/2019	Class A Ordinary Shares	11,220	$0	11,220	D
Restricted Share Unit (Right to Receive)	(5)	02/20/2016		M			3,488	02/20/2016(6)	02/20/2018	Class A Ordinary Shares	3,488	$0	6,976	D

Explanation of Responses:

1. Represents Class A Ordinary Shares issued upon the settlement of performance share units originally granted approximately three years ago under the eighth cycle of the Leadership Performance Program ("LPP8") on March 14, 2013. The number of shares issued was determined by the Organization and Compensation Committee of Aon's Board of Directors on February 18, 2016 based upon Aon's performance relative to a cumulative adjusted three year earnings per share target for the period beginning January 1, 2013 and ending December 31, 2015. In accordance with the terms of LPP8, and the achievement of specified growth targets under LPP8, settlement occurred at 200% of the original target value. The terms of LPP8 are more fully described in Aon plc's proxy statement filed with the SEC on June 24, 2014, and in the plan document filed as Exhibit 10.4 to Aon's Quarterly Report on Form 10-Q for the quarter ended March 31, 2013 filed with the SEC on May 1, 2013.

2. Class A Ordinary Shares withheld by the issuer for the payment of withholding taxes in connection with the vesting of a performance share unit award.

3. Class A Ordinary Shares acquired upon the vesting of a restricted share unit award.

4. Class A Ordinary Shares withheld by the issuer for the payment of withholding taxes in connection with the vesting of a restricted share unit award.

5. The restricted share unit award converts to Class A Ordinary Shares on 1-for-1 basis. In accordance with U.K. law, the reporting person agreed to pay the issuer the nominal value of US$0.01 per share issued to the reporting person.

6. The restricted share unit award vests in accordance with the terms of the Aon plc 2011 Incentive Compensation Plan as follows: 33 1/3% of the awards vest on each of the first through third anniversaries of the date of grant.

	/s/ Matthew M. Rice- Matthew M. Rice pursuant to a power of attorney from Gregory C. Case	02/22/2016
	** Signature of Reporting Person	Date
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