<SEC-DOCUMENT>0000912938-21-000184.txt : 20210211
<SEC-HEADER>0000912938-21-000184.hdr.sgml : 20210211
<ACCEPTANCE-DATETIME>20210211151343
ACCESSION NUMBER:		0000912938-21-000184
CONFORMED SUBMISSION TYPE:	SC 13G/A
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20210211
DATE AS OF CHANGE:		20210211

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Aon plc
		CENTRAL INDEX KEY:			0000315293
		STANDARD INDUSTRIAL CLASSIFICATION:	INSURANCE AGENTS BROKERS & SERVICES [6411]
		IRS NUMBER:				363051915
		STATE OF INCORPORATION:			X0
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13G/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-32053
		FILM NUMBER:		21619097

	BUSINESS ADDRESS:	
		STREET 1:		THE LEADENHALL BUILDING
		STREET 2:		122 LEADENHALL STREET
		CITY:			LONDON
		STATE:			X0
		ZIP:			EC3V 4AN
		BUSINESS PHONE:		(44) 20 7623 5500

	MAIL ADDRESS:	
		STREET 1:		THE LEADENHALL BUILDING
		STREET 2:		122 LEADENHALL STREET
		CITY:			LONDON
		STATE:			X0
		ZIP:			EC3V 4AN

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	AON CORP
		DATE OF NAME CHANGE:	19920703

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	COMBINED INTERNATIONAL CORP
		DATE OF NAME CHANGE:	19870504

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MASSACHUSETTS FINANCIAL SERVICES CO /MA/
		CENTRAL INDEX KEY:			0000912938
		STANDARD INDUSTRIAL CLASSIFICATION:	UNKNOWN SIC - 0000 [0000]
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13G/A

	BUSINESS ADDRESS:	
		STREET 1:		111 HUNTINGTON AVENUE
		STREET 2:		24TH FLOOR
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02199
		BUSINESS PHONE:		18006372929

	MAIL ADDRESS:	
		STREET 1:		111 HUNTINGTON AVENUE
		STREET 2:		24TH FLOOR
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02199
</SEC-HEADER>
<DOCUMENT>
<TYPE>SC 13G/A
<SEQUENCE>1
<FILENAME>SEC13G_Filing.htm
<DESCRIPTION>SEC SCHEDULE 13G
<TEXT>









<html>
	<head>
		<title> </title>
	</head>
	<body>







		<div align="center" xmlns:fo="http://www.w3.org/1999/XSL/Format" xmlns:ms="urn:schemas-microsoft-com:xslt">
			<h4>
UNITED STATES<br />
SECURITIES AND EXCHANGE COMMISSION<br />
Washington, D.C.  20549
			</h4>
			<h3>
SCHEDULE 13G<br />
			</h3>
			<h4>
Under the Securities Exchange Act of 1934
			</h4>

			<h4>
(Amendment No.
	4
)<sup>*</sup>
			</h4>

            <pre>
            </pre>


			<p>


	AON PLC



<br />
			<hr width="80%" noshade="true" />
(Name of Issuer)
			</p>
	        <p>

	Class A Ordinary Shares
<br />
			<hr width="80%" noshade="true" />
(Title of Class of Securities)
			</p>
			<p>

	G0403H108



<br />
			<hr width="80%" noshade="true" />
(CUSIP Number)
			</p>
	        <p>





    December 31, 2020

<br />
			<hr width="80%" noshade="true" />
(Date of Event Which Requires Filing of this Statement)
			</p>
		</div>

		<div xmlns:fo="http://www.w3.org/1999/XSL/Format" xmlns:ms="urn:schemas-microsoft-com:xslt">
			<p>
Check the appropriate box to designate the rule
pursuant to which this Schedule is filed:<br /><br />
                <table border="0" cellspacing="0" cellpadding="4">
                    <tr>
                        <td>
[X]
                        </td>
                        <td>
Rule 13d-1(b)
                        </td>
                    </tr>
                    <tr>
                        <td>
[ ]
                        </td>
                        <td>
Rule 13d-1(c)
                        </td>
                    </tr>
                    <tr>
                        <td>
[ ]
                        </td>
                        <td>
Rule 13d-1(d)
                        </td>
                    </tr>
                </table>
			</p>
		</div>

		<div xmlns:fo="http://www.w3.org/1999/XSL/Format" xmlns:ms="urn:schemas-microsoft-com:xslt">
			<p><sup>*</sup>
The remainder of this cover page shall be filled out for a reporting person's
initial filing on this form with respect to the subject class of securities,
and for any subsequent amendment containing information which would alter the
disclosures provided in a prior cover page.
			</p>
			<p>
The information required in the remainder of this cover page shall not be
deemed to be "filed" for the purpose of Section 18 of the Securities Exchange
Act of 1934 (the "Act") or otherwise subject to the liabilities of that section
of the Act, but shall be subject to all other provisions of the Act (however,
see the Notes.)
			</p>




		</div>










<p style="page-break-before:always" xmlns:fo="http://www.w3.org/1999/XSL/Format" xmlns:ms="urn:schemas-microsoft-com:xslt">
<hr width="100%" noshade="true" color="gray" size="1" />
</p>


<table xmlns:fo="http://www.w3.org/1999/XSL/Format" xmlns:ms="urn:schemas-microsoft-com:xslt">
    <tr>
        <td colspan="2">
CUSIP No.
        </td>
        <td colspan="4">

	G0403H108

        </td>
    </tr>
</table>


<p xmlns:fo="http://www.w3.org/1999/XSL/Format" xmlns:ms="urn:schemas-microsoft-com:xslt" />
<table style="border-collapse: collapse" frame="hsides" cellpadding="8" xmlns:fo="http://www.w3.org/1999/XSL/Format" xmlns:ms="urn:schemas-microsoft-com:xslt">
	<tr>
		<td width="10mm" valign="top">
1.
		</td>
		<td colspan="3">
NAMES OF REPORTING PERSONS<br />
I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)<br /><br />


Massachusetts Financial Services Company

("MFS")


<br />


	04-2747644
<br />
		</td>
	</tr>
	<tr>
		<td valign="top">
2.
		</td>
		<td colspan="3">
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*<br /><br />
(a)  [ ]<br />
(b)  [ ]<br />
Not Applicable
		</td>
	</tr>
	<tr>
		<td wvalign="top">
3.
		</td>
		<td colspan="3">
SEC USE ONLY
		</td>
	</tr>
	<tr>
		<td valign="top">
4.				</td>
		<td colspan="3">
CITIZENSHIP OR PLACE OF ORGANIZATION<br /><br />


	Delaware

		</td>
	</tr>
	<tr>
		<td width="15%" colspan="2" rowspan="4">
			<p>
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH
			</p>
		</td>
		<td width="35%">
5. SOLE VOTING POWER
        </td>
        <td>







18,961,005


        </td>
	</tr>
	<tr>
		<td>
6.  SHARED VOTING POWER
        </td>
        <td>







0


        </td>
	</tr>
	<tr>
		<td>
7.  SOLE DISPOSITIVE POWER</td>
        <td>







20,197,468


        </td>
	</tr>
	<tr>
		<td>
8.  SHARED DISPOSITIVE POWER
        </td>
        <td>







0


        </td>
	</tr>
	<tr>
		<td valign="top">
9.
        </td>
		<td colspan="3">
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON<br /><br />


    20,197,468























    shares of Class A Ordinary Shares

    consisting of shares beneficially owned by
MFS
 and/or certain other non-reporting entities




		</td>
	</tr>
	<tr>
		<td valign="top">
10.
        </td>
		<td colspan="3">
CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES<br /><br />

  Not Applicable
<br />
    </td>
	</tr>
	<tr>
		<td valign="top">
11.
        </td>
		<td colspan="3">
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)<br /><br />


    8.8%

		</td>
	</tr>
	<tr>
		<td valign="top">
12.
        </td>
		<td colspan="3">
TYPE OF REPORTING PERSON<br /><br />

    IA

		</td>
	</tr>
</table>
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</pre>

















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<hr width="100%" noshade="true" color="gray" size="1" />
</p>

    <table cellpadding="4" xmlns:fo="http://www.w3.org/1999/XSL/Format" xmlns:ms="urn:schemas-microsoft-com:xslt">


	<tr>
		<td colspan="5" align="left" valign="top">
<b>Item 1.</b>
		</td>
    </tr>
    <tr>
        <td>
        </td>
		<td align="left" valign="top">
<b>(a)</b>
		</td>
		<td colspan="3">
<b>Name of Issuer</b><br />
AON PLC
		</td>
	</tr>
	<tr>
        <td>
        </td>
		<td align="left" valign="top">
<b>(b)</b>
		</td>
		<td colspan="3">
<b>Address of Issuer's Principal Executive Offices</b><br />


Metropolitan Building, James Joyce Street, Dublin 1  D01 K0Y8, Ireland

		</td>
	</tr>


    <tr>
		<td colspan="5" align="left" valign="top">
<b>Item 2.</b>
		</td>
    </tr>
	<tr>
        <td>
        </td>
		<td align="left" valign="top">
<b>(a)</b>
		</td>
		<td colspan="3">
<b>Name of Person Filing</b><br />








Massachusetts Financial Services Company





        </td>
	</tr>
	<tr>
        <td>
        </td>
		<td align="left" valign="top">
<b>(b)</b>
		</td>
		<td colspan="3">
<b>Address of Principal Business Office or, if None, Residence</b><br />











    111 Huntington Avenue, Boston, MA  02199





		</td>
	</tr>
	<tr>
        <td>
        </td>
		<td align="left" valign="top">
<b>(c)</b>
		</td>
		<td colspan="3">
<b>Citizenship</b><br />








	Delaware



		</td>
	</tr>
	<tr>
        <td>
        </td>
		<td align="left" valign="top">
<b>(d)</b>
		</td>
		<td colspan="3">
<b>Title of Class of Securities</b><br />

	Class A Ordinary Shares

		</td>
	</tr>
	<tr>
        <td>
        </td>
		<td align="left" valign="top">
<b>(e)</b>
		</td>
		<td colspan="3">
<b>CUSIP Number</b><br />

	G0403H108

		</td>
	</tr>


	<tr>
		<td width="5%" align="left" valign="top">
<b>Item 3.</b>
		</td>
		<td colspan="4">
<b>If This Statement is Filed Pursuant to
Rule 13d-1(b), or 13d-2(b) or (c),
Check Whether the Person Filing is a:</b>
        </td>
    </tr>





    <tr>
        <td>
        </td>
        <td>
(a)
        </td>
        <td>
[ ]
        </td>
        <td colspan="2">
Broker or dealer registered under Section 15 of the Act (15 U.S.C. 78o).
        </td>
    </tr>
    <tr>
        <td>
        </td>
        <td>
(b)
        </td>
        <td>
[ ]
        </td>
        <td colspan="2">
Bank as defined in Section 3(a)(6) of the Act (15 U.S.C. 78c).
        </td>
    </tr>
    <tr>
        <td>
        </td>
        <td>
(c)
        </td>
        <td>
[ ]
        </td>
        <td colspan="2">
Insurance Company as defined in Section 3(a)(19) of the Act (15 U.S.C. 78c).
        </td>
    </tr>
    <tr>
        <td>
        </td>
        <td>
(d)
        </td>
        <td>
[ ]
        </td>
        <td colspan="2">
Investment Company registered under
Section 8 of the Investment Company Act of 1940
(15 U.S.C. 80a-8).
        </td>
    </tr>
    <tr>
        <td>
        </td>
        <td>
(e)
        </td>
        <td>
[X]
        </td>
        <td colspan="2">
An investment adviser in accordance with
Rule 240.13d-1(b)(1)(ii)(E);
        </td>
    </tr>
    <tr>
        <td>
        </td>
        <td>
(f)
        </td>
        <td>
[ ]
        </td>
        <td colspan="2">
An employee benefit plan or endowment fund in accordance with
Rule 240.13d-1(b)(1)(ii)(F);
        </td>
    </tr>
    <tr>
        <td>
        </td>
        <td>
(g)
        </td>
        <td>
[ ]
        </td>
        <td colspan="2">
A parent holding company or control person in accordance with
Rule 240.13d-1(b)(1)(ii)(G);
        </td>
    </tr>
    <tr>
        <td>
        </td>
        <td>
(h)
        </td>
        <td>
[ ]
        </td>
        <td colspan="2">
A savings association as defined in
Section 3(b) of the Federal Deposit Insurance Act
(12 U.S.C. 1813);
        </td>
    </tr>
    <tr>
        <td>
        </td>
        <td>
(i)
        </td>
        <td>
[ ]
        </td>
        <td colspan="2">
A church plan that is excluded from the
definition of an investment company under
Section 3(c)(14) of the Investment Company Act
of 1940 (15 U.S.C. 80a-3);
        </td>
    </tr>
    <tr>
        <td>
        </td>
        <td>
(j)
        </td>
        <td>
[ ]
        </td>
        <td colspan="2">
Group, in accordance with Rule 240.13d-1(b)(1)(ii)(J).
        </td>
    </tr>


	<tr>
		<td width="8%" align="left" valign="top">
<b>Item 4.</b>
		</td>
		<td colspan="4">
<b>Ownership.</b>
        </td>
    </tr>
    <tr>
        <td colspan="5">
Provide the following information regarding the aggregate number and
percentage of the class of securities of the issuer identified in Item 1.
        </td>
    </tr>
    <tr>
        <td>
        </td>
        <td>
(a)
        </td>
        <td colspan="3">
Amount Beneficially Owned:
        </td>
    </tr>
    <tr>
        <td colspan="2">
        </td>
        <td colspan="3">









    20,197,468












    shares of Class A Ordinary Shares

    consisting of shares beneficially owned by
MFS
 and/or certain other non-reporting entities







        </td>
    </tr>
    <tr>
        <td>
        </td>
        <td>
(b)
        </td>
        <td colspan="3">
Percent of Class:
        </td>
    </tr>
    <tr>
        <td colspan="2">
        </td>
        <td colspan="3">


    8.8%

        </td>
    </tr>
    <tr>
        <td>
        </td>
        <td>
(c)
        </td>
        <td colspan="3">
Number of shares as to which such person has:
        </td>
    </tr>
    <tr>
        <td colspan="2">
        </td>
        <td>
(i)
        </td>
        <td width="40%">
sole power to vote or to direct the vote
        </td>
        <td>







18,961,005


        </td>
    </tr>
    <tr>
        <td colspan="2">
        </td>
        <td>
(ii)
        </td>
        <td>
shared power to vote or to direct the vote
        </td>
        <td>







0


        </td>
    </tr>
    <tr>
        <td colspan="2">
        </td>
        <td>
(iii)
        </td>
        <td>
sole power to dispose or to direct the disposition of
        </td>
        <td>







20,197,468


        </td>
    </tr>
    <tr>
        <td colspan="2">
        </td>
        <td>
(iv)
        </td>
        <td>
shared power to dispose or to direct the disposition of
        </td>
        <td>







0


        </td>
    </tr>











	<tr>
		<td align="left" valign="top">
<b>Item 5.</b>
		</td>
		<td colspan="4">
<b>Ownership of Five Percent or Less of Class.</b>
		</td>
    </tr>
    <tr>
        <td>
        </td>
		<td colspan="4">
If this statement is being filed to report the fact that
as of the date hereof the reporting person has ceased to
be the beneficial owner of more than five percent of the
class of securities, check the following:
[

]
		</td>
	</tr>


	<tr>
		<td align="left" valign="top">
<b>Item 6.</b>
		</td>
		<td colspan="4">
<b>Ownership of More than Five Percent on Behalf of Another Person.</b>
		</td>
    </tr>
    <tr>
        <td>
        </td>
		<td colspan="4">














    Not Applicable<br />



		</td>
	</tr>


	<tr>
		<td align="left" valign="top">
<b>Item 7.</b>
		</td>
		<td colspan="4">
<b>Identification and Classification of the Subsidiary Which Acquired
the Security Being Reported on by the Parent Holding Company.</b><br />
		</td>
    </tr>
    <tr>
        <td>
        </td>
		<td colspan="4">








  Not Applicable

		</td>
	</tr>


	<tr>
		<td align="left" valign="top">
<b>Item 8.</b>
		</td>
		<td colspan="4">
<b>Identification and Classification of Members of the Group.</b><br />


<br />Not Applicable
<br />
		</td>
	</tr>


	<tr>
		<td align="left" valign="top">
<b>Item 9.</b>
		</td>
		<td colspan="4">
<b>Notice of Dissolution of Group.</b><br />

<br />Not Applicable
<br />
		</td>
	</tr>


	<tr>
		<td align="left" valign="top">
<b>Item 10.</b>
		</td>
		<td colspan="4">
<b>Certification.</b><br />
<br />
By signing below, I certify that, to the best
of my knowledge and belief, the securities
referred to above

were acquired and are held
in the ordinary course of business and

were not acquired and are not held for the purpose
of or with the effect of changing or
influencing the control of the issuer of the
securities and were not acquired and are not held
in connection with or as a participant in any
transaction having that purpose or effect.
		</td>
	</tr>
</table>








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    <h4 align="center" xmlns:fo="http://www.w3.org/1999/XSL/Format" xmlns:ms="urn:schemas-microsoft-com:xslt">SIGNATURE</h4>
<table xmlns:fo="http://www.w3.org/1999/XSL/Format" xmlns:ms="urn:schemas-microsoft-com:xslt">
    <tr>
        <td width="10%"> </td>
        <td>
After reasonable inquiry and to the best of my knowledge and belief,
I certify that the information set forth in this statement is true,
complete and correct.
        </td>
        <td width="10%"> </td>
    </tr>
</table>
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    <tr>
        <td width="150px"> </td>
        <td width="850px">

Massachusetts Financial Services Company
<br />
















       </td>
    </tr>
    <tr>
        <td width="150px"> </td>
        <td width="850px">
By: <u>/s/ Robert R. Flaherty</u><br />
        </td>
    </tr>
    <tr>
        <td width="150px"> </td>
        <td width="850px">
Date:




    February 11, 2021

<br />
        </td>
    </tr>
    <tr>
        <td width="150px"> </td>
        <td width="850px">
Name: Robert R. Flaherty<br />
        </td>
    </tr>
    <tr>
        <td width="150px"> </td>
        <td width="850px">
Title:   Vice President<br />
        </td>
    </tr>
</table>
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        <td width="850px">

        </td>
    </tr>
    <tr>
        <td width="150px"> </td>
        <td width="850px">

        </td>
    </tr>
</table>






<p />























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</SEC-DOCUMENT>
