Form 8.3 - Aon plc

                                                FORM 8.3

IRISH TAKEOVER PANEL

DISCLOSURE UNDER RULE 8.3 OF THE IRISH TAKEOVER PANEL ACT, 1997, TAKEOVER RULES, 2013

DEALINGS BY PERSONS WITH INTERESTS IN RELEVANT SECURITIES REPRESENTING 1% OR MORE

1. KEY INFORMATION

Name of person dealing (Note 1)	State Street Global Advisors & Affiliates
Company dealt in	Aon plc
Class of relevant security to which the dealings being disclosed relate (Note 2)	US$0.01 ordinary shares
Date of dealing	26th  February 2021

2. INTERESTS AND SHORT POSITIONS

(a) Interests and short positions (following dealing) in the class of relevant security dealt in (Note 3)

	Long		Short
	Number	(%)	Number	(%)
(1) Relevant securities	9,256,486	4.09610%
(2) Derivatives (other than options)	N/A
(3) Options and agreements to purchase/sell	N/A
Total	9,256,486	4.09610%

(b) Interests and short positions in relevant securities of the company, other than the class dealt in (Note 3)

Class of relevant security:	Long		Short
	Number	(%)	Number	(%)
(1) Relevant securities	N/A
(2) Derivatives (other than options)	N/A
(3) Options and agreements to purchase/sell	N/A
Total	N/A

3. DEALINGS (Note 4)

(a) Purchases and sales

Purchase/sale	Number of relevant securities	Price per unit (Note 5)
Purchase	500	227.71
Purchase	1,700	227.71
Purchase	100	227.71
Purchase	200	227.71
Purchase	100	227.71
Purchase	200	227.71
Purchase	103	227.71
Purchase	6,018	227.71
Purchase	20	227.71
Purchase	130	227.71
Purchase	143	227.71
Purchase	105	227.71
Purchase	64	227.71
Purchase	100	227.71
Purchase	200	227.71
Purchase	800	227.71
Purchase	4,600	227.71
Purchase	400	227.71
Purchase	84	227.71
Purchase	112	227.71
Purchase	126	227.71
Purchase	150	227.71
Sale	400	227.71
Sale	200	228.18
Sale	100	227.71
Sale	100	227.71
Sale	200	227.71
Sale	800	227.71
Sale	200	227.71
Sale	100	227.71
Sale	400	227.71
Sale	100	227.71
Sale	200	227.71
Sale	1,620	227.71
Sale	16,335	227.71
Sale	1,500	227.71
Sale	3,375	227.71
Sale	2244	227.71
Sale	1,836	227.71
Sale	408	227.71
Sale	3,000	227.71
Sale	60	227.71
Sale	510	227.71
Sale	110	227.71
Sale	176	227.71
Sale	400	227.71
Sale	172	227.71
Sale	200	227.71
Sale	400	227.71
Sale	400	227.71

                                                                                                                                                                                    

 (b) Derivatives transactions (other than options transactions)

Product name, e.g. CFD	Nature of transaction (Note 6)	Number of relevant securities (Note 7)	Price per unit (Note 5)
N/A

                                                                                                                                                     
(c) Options transactions in respect of existing relevant securities

(i) Writing, selling, purchasing or varying

Product name, e.g. call option	Writing, selling, purchasing  varying etc.	Number of securities to which the option relates (Note 7)	Exercise price	Type, e.g. American, European etc.	Expiry date	Option money paid/received per unit (Note 5)
N/A

(ii) Exercising

Product name, e.g. call option	Number of securities	Exercise price per unit (Note 5)
N/A

(d) Other dealings (including transactions in respect of new securities) (Note 4)

Nature of transaction (Note 8)	Details	Price per unit (if applicable) (Note 5)
N/A

4. OTHER INFORMATION

Agreements, arrangements or understandings relating to options or derivatives

Full details of any agreement, arrangement or understanding between the person disclosing and any other person relating to the voting rights of any relevant securities under any option referred to on this form or relating to the voting rights or future acquisition or disposal of any relevant securities to which any derivative referred to on this form is referenced. If none, this should be stated.

N/A

Is a Supplemental Form 8 attached? (Note 9)	NO
Date of disclosure	01st March 2021
Contact name	Lionel Colaco
Telephone number	020 33956098
If a connected EFM, name of offeree/offeror with which connected	N/A
If a connected EFM, state nature of connection (Note 10)	N/A