Aon plc issued the following forms today.

IRISH TAKEOVER PANEL

DISCLOSURE UNDER RULE 8.1(a) AND (b)(i) OF THE IRISH TAKEOVER PANEL ACT, 1997, TAKEOVER RULES, 2013

DEALINGS BY OFFERORS, OFFEREES OR PARTIES ACTING IN CONCERT WITH THEM FOR THEMSELVES OR FOR DISCRETIONARY CLIENTS

1.

KEY INFORMATION

Name of person dealing (Note 1)

Aon plc

Company dealt in

Aon plc

Class of relevant security to which the

dealings being disclosed relate (Note 2)

Class A ordinary shares, $0.01

nominal value per share

Date of dealing

9 March 2020

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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
(2)	Derivatives (other than options)
(3)	Options and agreements to purchase/sell

Total

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(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
(2)	Derivatives (other than options)
(3)	Options and agreements to purchase/sell

Total

3.

DEALINGS (Note 4)

(a)

Purchases and sales

Purchase/sale

Number of relevant securities

Price per unit (Note 5)

Share buyback

68,236

$173.57 to $198.08

(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)

(c)

Options transactions in respect of existing relevant securities

(i)

Writing, selling, purchasing or varying

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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)

(ii)

Exercising

Product name,

e.g. call option

Number of securities

Exercise price per

unit (Note 5)

(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)

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.

Is a Supplemental Form 8 attached? (Note 9)

YES/NO

Date of disclosure

10 March 2020

Contact name

Leslie Follmer

Telephone number

312-381-3310

Name of offeree/offeror with which acting in concert

Aon plc

Specify category and nature of acting in concert status

Aon plc

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