Exhibit 99.1

TR-1: Standard form for notification of major holdings

 

1.

Issuer Details

ISIN

 

LOGO   IE00BWT6H894

Issuer Name

Flutter Entertainment Public Limited Company

UK or Non-UK Issuer

Non-UK

 

2.

Reason for Notification

An acquisition or disposal of voting rights

 

3.

Details of person subject to the notification obligation

Name

BlackRock, Inc.

City of registered office (if applicable)

Wilmington

Country of registered office (if applicable)

USA

 

4.

Details of the shareholder

Full name of shareholder(s) if different from the person(s) subject to the notification obligation, above

 

 

City of registered office (if applicable)

 

 

Country of registered office (if applicable)

 

 

 

5.

Date on which the threshold was crossed or reached

02-Oct-2025

 

6.

Date on which Issuer notified

03-Oct-2025

7.

Total positions of person(s) subject to the notification obligation

 

     % of voting
rights attached
to shares (total of 8.A)		      % of voting rights
through financial
instruments (total
of 8.B 1 + 8.B 2)		      Total of both in
% (8.A + 8.B)		      Total number
of voting rights
held in issuer		  

Resulting situation on the date on which threshold was crossed or reached

      4.940000        0.310000        5.250000        9262149  

Position of previous notification (if applicable)

      5.060000        0.360000        5.420000     

 

8.

Notified details of the resulting situation on the date on which the threshold was crossed or reached

 

8A.

Voting rights attached to shares

 

Class/Type of shares ISIN code(if possible)

    Number of direct
voting rights
(DTR5.1)		      Number of indirect
voting rights
(DTR5.2.1)		      % of direct
voting rights
(DTR5.1)		     % of indirect
voting rights
(DTR5.2.1)		  

IE00BWT6H894

         8692532          4.940000  

Sub Total 8.A

      8692532           4.940000 %   

 

8B1.

Financial Instruments according to (DTR5.3.1R.(1) (a))

 

Type of financial instrument

    Expiration
date		      Exercise/conversion
period		      Number of voting
rights that may be
acquired if the
instrument is
exercised/converted		      % of voting
rights		  

Securities Lending

            474560        0.260000  

Sub Total 8.B1

         474560        0.260000 % 

 

8B2.

Financial Instruments with similar economic effect according to (DTR5.3.1R.(1) (b))

 

Type of financial instrument

    Expiration
date		      Exercise/conversion
period		      Physical or
cash settlement		    Number of
voting rights		      % of voting
rights		  

CFD

          Cash      95057        0.050000  

Sub Total 8.B2

         95057        0.050000 % 

 

9.

Information in relation to the person subject to the notification obligation

2. Full chain of controlled undertakings through which the voting rights and/or the financial instruments are effectively held starting with the ultimate controlling natural person or legal entities (please add additional rows as necessary)

Ultimate

controlling person

   

Name of controlled

undertaking

   

% of voting

rights if it

equals or is

higher than

the notifiable

threshold

   

% of voting rights
through financial
instruments if it
equals or is higher
than the notifiable
threshold

   

Total of both

if it equals or

is higher than

the notifiable
threshold

BlackRock, Inc. (Chain 1)

    BlackRock Saturn Subco, LLC         

BlackRock, Inc. (Chain 1)

    BlackRock Finance, Inc.         

BlackRock, Inc. (Chain 1)

    BlackRock Holdco 2, Inc.         

BlackRock, Inc. (Chain 1)

    BlackRock Financial Management, Inc.         

BlackRock, Inc. (Chain 1)

    BlackRock International Holdings, Inc.         

BlackRock, Inc. (Chain 1)

    BR Jersey International Holdings L.P.         

BlackRock, Inc. (Chain 1)

    BlackRock (Singapore) Holdco Pte. Ltd.         

BlackRock, Inc. (Chain 1)

    BlackRock HK Holdco Limited         

BlackRock, Inc. (Chain 1)

    BlackRock Lux Finco S.a.r.l.         

BlackRock, Inc. (Chain 1)

    BlackRock Japan Holdings GK         

BlackRock, Inc. (Chain 1)

    BlackRock Japan Co., Ltd.         

BlackRock, Inc. (Chain 2)

    BlackRock Saturn Subco, LLC         

BlackRock, Inc. (Chain 2)

    BlackRock Finance, Inc.         

BlackRock, Inc. (Chain 2)

    Trident Merger, LLC         

BlackRock, Inc. (Chain 2)

    BlackRock Investment Management, LLC         

BlackRock, Inc. (Chain 3)

    BlackRock Saturn Subco, LLC         

BlackRock, Inc. (Chain 3)

    BlackRock Finance, Inc.         

BlackRock, Inc. (Chain 3)

    BlackRock Holdco 2, Inc.         

BlackRock, Inc. (Chain 3)

    BlackRock Financial Management, Inc.         

BlackRock, Inc. (Chain 3)

    BlackRock International Holdings, Inc.         

BlackRock, Inc. (Chain 3)

    BR Jersey International Holdings L.P.         

BlackRock, Inc. (Chain 3)

    BlackRock Holdco 3, LLC         

BlackRock, Inc. (Chain 3)

    BlackRock Cayman 1 LP         

BlackRock, Inc. (Chain 3)

    BlackRock Cayman West Bay Finco Limited         

BlackRock, Inc. (Chain 3)

    BlackRock Cayman West Bay IV Limited         

BlackRock, Inc. (Chain 3)

    BlackRock Group Limited         

BlackRock, Inc. (Chain 3)

    BlackRock Finance Europe Limited         

BlackRock, Inc. (Chain 3)

    BlackRock Investment Management (UK) Limited         

BlackRock, Inc. (Chain 4)

    BlackRock Saturn Subco, LLC         

BlackRock, Inc. (Chain 4)

    BlackRock Finance, Inc.         

BlackRock, Inc. (Chain 4)

    BlackRock Holdco 2, Inc.         

BlackRock, Inc. (Chain 4)

    BlackRock Financial Management, Inc.         

BlackRock, Inc. (Chain 4)

    BlackRock International Holdings, Inc.         

BlackRock, Inc. (Chain 4)

    BR Jersey International Holdings L.P.         

BlackRock, Inc. (Chain 4)

    BlackRock Australia Holdco Pty. Ltd.         

BlackRock, Inc. (Chain 4)

    BlackRock Investment Management (Australia) Limited         

BlackRock, Inc. (Chain 5)

    BlackRock Saturn Subco, LLC         

BlackRock, Inc. (Chain 5)

    BlackRock Finance, Inc.         

BlackRock, Inc. (Chain 5)

    BlackRock Holdco 2, Inc.         

BlackRock, Inc. (Chain 5)

    BlackRock Financial Management, Inc.         

BlackRock, Inc. (Chain 5)

    BlackRock Holdco 4, LLC         

BlackRock, Inc. (Chain 5)

    BlackRock Holdco 6, LLC         

BlackRock, Inc. (Chain 5)

    BlackRock Delaware Holdings Inc.         

BlackRock, Inc. (Chain 5)

    BlackRock Institutional Trust Company, National Association         

BlackRock, Inc. (Chain 6)

    BlackRock Saturn Subco, LLC         

BlackRock, Inc. (Chain 6)

    BlackRock Finance, Inc.         

BlackRock, Inc. (Chain 6)

    BlackRock Holdco 2, Inc.         

BlackRock, Inc. (Chain 6)

    BlackRock Financial Management, Inc.         

BlackRock, Inc. (Chain 6)

    BlackRock Holdco 4, LLC         

BlackRock, Inc. (Chain 6)

    BlackRock Holdco 6, LLC         

BlackRock, Inc. (Chain 6)

    BlackRock Delaware Holdings Inc.         

BlackRock, Inc. (Chain 6)

    BlackRock Fund Advisors         

BlackRock, Inc. (Chain 7)

    BlackRock Saturn Subco, LLC         

BlackRock, Inc. (Chain 7)

    BlackRock Finance, Inc.         

BlackRock, Inc. (Chain 7)

    BlackRock Holdco 2, Inc.         

BlackRock, Inc. (Chain 7)

    BlackRock Financial Management, Inc.         

BlackRock, Inc. (Chain 8)

    BlackRock Saturn Subco, LLC         

BlackRock, Inc. (Chain 8)

    BlackRock Finance, Inc.         

BlackRock, Inc. (Chain 8)

    BlackRock Holdco 2, Inc.         

BlackRock, Inc. (Chain 8)

    BlackRock Financial Management, Inc.         

BlackRock, Inc. (Chain 8)    BlackRock International Holdings, Inc.         
BlackRock, Inc. (Chain 8)    BR Jersey International Holdings L.P.         
BlackRock, Inc. (Chain 8)    BlackRock (Singapore) Holdco Pte. Ltd.         
BlackRock, Inc. (Chain 8)    BlackRock HK Holdco Limited         
BlackRock, Inc. (Chain 8)    BlackRock Asset Management North Asia Limited         
BlackRock, Inc. (Chain 9)    BlackRock Saturn Subco, LLC         
BlackRock, Inc. (Chain 9)    BlackRock Finance, Inc.         
BlackRock, Inc. (Chain 9)    BlackRock Holdco 2, Inc.         
BlackRock, Inc. (Chain 9)    BlackRock Financial Management, Inc.         
BlackRock, Inc. (Chain 9)    BlackRock International Holdings, Inc.         
BlackRock, Inc. (Chain 9)    BlackRock Canada Holdings ULC         
BlackRock, Inc. (Chain 9)    BlackRock Asset Management Canada Limited         

BlackRock, Inc. (Chain 10)    BlackRock Saturn Subco, LLC         
BlackRock, Inc. (Chain 10)    BlackRock Finance, Inc.         
BlackRock, Inc. (Chain 10)    BlackRock Holdco 2, Inc.         
BlackRock, Inc. (Chain 10)    BlackRock Financial Management, Inc.         
BlackRock, Inc. (Chain 10)    BlackRock Capital Holdings, Inc.         
BlackRock, Inc. (Chain 10)    BlackRock Advisors, LLC         
BlackRock, Inc. (Chain 11)    BlackRock Saturn Subco, LLC         
BlackRock, Inc. (Chain 11)    BlackRock Finance, Inc.         
BlackRock, Inc. (Chain 11)    BlackRock Holdco 2, Inc.         
BlackRock, Inc. (Chain 11)    BlackRock Financial Management, Inc.         
BlackRock, Inc. (Chain 11)    BlackRock International Holdings, Inc.         
BlackRock, Inc. (Chain 11)    BR Jersey International Holdings L.P.         
BlackRock, Inc. (Chain 11)    BlackRock Holdco 3, LLC         

BlackRock, Inc. (Chain 11)    BlackRock Cayman 1 LP         
BlackRock, Inc. (Chain 11)    BlackRock Cayman West Bay Finco Limited         
BlackRock, Inc. (Chain 11)    BlackRock Cayman West Bay IV Limited         
BlackRock, Inc. (Chain 11)    BlackRock Group Limited         
BlackRock, Inc. (Chain 11)    BlackRock Finance Europe Limited         
BlackRock, Inc. (Chain 11)    BlackRock Advisors (UK) Limited         
BlackRock, Inc. (Chain 12)    BlackRock Saturn Subco, LLC         
BlackRock, Inc. (Chain 12)    BlackRock Finance, Inc.         
BlackRock, Inc. (Chain 12)    BlackRock Holdco 2, Inc.         
BlackRock, Inc. (Chain 12)    BlackRock Financial Management, Inc.         
BlackRock, Inc. (Chain 12)    BlackRock International Holdings, Inc.         
BlackRock, Inc. (Chain 12)    BR Jersey International Holdings L.P.         

BlackRock, Inc. (Chain 12)    BlackRock (Singapore) Holdco Pte. Ltd.         
BlackRock, Inc. (Chain 12)    BlackRock (Singapore) Limited         
BlackRock, Inc. (Chain 13)    BlackRock Saturn Subco, LLC         
BlackRock, Inc. (Chain 13)    BlackRock Finance, Inc.         
BlackRock, Inc. (Chain 13)    Trident Merger, LLC         
BlackRock, Inc. (Chain 13)    BlackRock Investment Management, LLC         
BlackRock, Inc. (Chain 13)    Amethyst Intermediate, LLC         
BlackRock, Inc. (Chain 13)    Aperio Holdings, LLC         
BlackRock, Inc. (Chain 13)    Aperio Group, LLC         

 

10.

In case of proxy voting

Name of the proxy holder

 

 

The number and % of voting rights held

 

 

The date until which the voting rights will be held

 

 

11.

Additional Information

BlackRock Regulatory Threshold Reporting Team

Jana Blumenstein

020 7743 3650

 

12.

Date of Completion

3rd October 2025

 

13.

Place Of Completion

12 Throgmorton Avenue, London, EC2N 2DL, U.K.