FORM 4
[ ] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).         	UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES
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                      	Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940	                      	

1. Name and Address of Reporting Person *

Davies Christa	2. Issuer Name and Ticker or Trading Symbol

Aon plc [ AON ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable)

_____ Director                      _____ 10% Owner
__ X __ Officer (give title below)      _____ Other (specify below)
EVP and CFO	
(Last)          (First)          (Middle)

C/O AON PLC, 8 DEVONSHIRE SQUARE	3. Date of Earliest Transaction (MM/DD/YYYY)

2/16/2017		
(Street)

LONDON, X0 EC2M 4PL
(City)        (State)        (Zip)	4. 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 Acquired, Disposed of, or Beneficially Owned	
1.Title of Security
(Instr. 3)	2. Trans. Date	2A. Deemed Execution Date, if any	3. Trans. 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  	2/16/2017  	 	A (1)	  	71802  	A	  (1)	301315  	D  	 	
Class A Ordinary Shares  	2/16/2017  	 	F (2)	  	30120  	D	$117.280  	271195  	D  	 	
Class A Ordinary Shares  	2/17/2017  	 	M (3)	  	6534  	A	$45.895  	277729  	D  	 	
Class A Ordinary Shares  	2/17/2017  	 	S (3)	  	48216  	D	$117.418   (4)	229513  	D  	 	
Class A Ordinary Shares  	2/17/2017  	 	M (5)	  	1774  	A	  (5)	231287  	D  	 	
Class A Ordinary Shares  	2/17/2017  	 	F (6)	  	745  	D	$117.530  	230542  	D  	 	
Class A Ordinary Shares  	2/17/2017  	 	M (5)	  	1974  	A	  (5)	232516  	D  	 	
Class A Ordinary Shares  	2/17/2017  	 	F (6)	  	829  	D	$117.530  	231687  	D  	 	

Table II - Derivative Securities Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities)	
1. Title of Derivate Security
(Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Trans. Date	3A. Deemed Execution Date, if any	4. Trans. 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	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 of Derivative Security: 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					
Employee Stock Option (Right to Buy)  	$45.895  	2/17/2017  	 	M  	  	  	6534   	  (7)	11/12/2017  	Class A Ordinary Shares  	6534  	  (8)	0  	D  	 	
Restricted Share Unit (Right to Receive)  	  (9)	2/16/2017  	 	A  	  	4775   	  	2/16/2018   (10)	2/16/2020   (10)	Class A Ordinary Shares  	4775  	$0  	4775  	D  	 	
Restricted Share Unit (Right to Receive)  	  (9)	2/17/2017  	 	M  	  	  	1774   	2/19/2017   (11)	2/19/2018   (11)	Class A Ordinary Shares  	1774  	$0  	1775  	D  	 	
Restricted Share Unit (Right to Receive)  	  (9)	2/17/2017  	 	M  	  	  	1974   	2/18/2017   (12)	2/18/2019   (12)	Class A Ordinary Shares  	1974  	$0  	3948  	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 ninth cycle of the Leadership Performance Program ("LPP9") on March 13, 2014. The number of shares issued was determined by the Organization and Compensation Committee of Aon's Board of Directors on February 16, 2017 based upon Aon's performance relative to a cumulative adjusted three year earnings per share target for the period beginning January 1, 2014 and ending December 31, 2016. The terms of LPP9 are more fully described in Aon plc's proxy statement filed with the SEC on April 24, 2015.	
(  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) 	The transactions reported were effected pursuant to a trading plan meeting the requirements of SEC Rule 10b5-1.	
(  4) 	The price reported is a weighted average price. The shares were sold in multiple transactions at prices ranging from $116.740 to $117.590, inclusive. The reporting person undertakes to provide to Aon plc, or the Staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.	
(  5) 	Class A Ordinary Shares acquired upon the vesting of a restricted share unit award.	
(  6) 	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.	
(  7) 	Vesting occurred in accordance with the terms of Aon Stock Incentive Plan as follows: one-third of the options vested on the each of the second through fourth anniversary of the date of grant.	
(  8) 	Stock option granted pursuant to Aon Stock Incentive Plan.	
(  9) 	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.	
(  10) 	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 the grant.	
(  11) 	A restricted share unit award was granted on February 19, 2015 and vests in accordance with the terms of the Aon Stock Incentive Plan as follows: 33 1/3% of the awards vest on each of the first through third anniversaries of the date of the grant.	
(  12) 	A restricted share unit award was granted on February 18, 2016 and vests in accordance with the terms of the Aon Stock Incentive Plan as follows: 33 1/3% of the awards vest on each of the first through third anniversaries of the date of the grant.	

Reporting Owners	
Reporting Owner Name / Address	Relationships	
	Director	10% Owner	Officer	Other	
Davies Christa
C/O AON PLC
8 DEVONSHIRE SQUARE
LONDON, X0 EC2M 4PL			EVP and CFO		

Signatures		
/s/ Michele D. Welsh- by Michele D. Welsh pursuant to a power of attorney from Christa Davies		2/21/2017	
** 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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