REG-Director/PDMR Shareholding

OsbAnnouncement

08/05/2026 15:15

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LEI: 213800ZBKL9BHSL2K459

8 May 2026

OSB GROUP PLC
(the Company)

Notification of Transactions of Persons Discharging Managerial
Responsibilities (PDMRs)

The Company notifies the following changes in the interests in the ordinary
shares of £0.01 each (Shares) of the Company of the PDMRs arising from awards
granted under the Performance Share Plan (PSP) on 8 May 2026 (the Award Date).
The number of Shares subject to the awards has been calculated by reference to
the average closing share price of the Company over the three dealing days
prior to the Award Date (£5.175).

The PSP awards are based on return on tangible equity, relative total
shareholder return, a risk-based measures and an ESG measure. The performance
targets will be measured over three financial years (1 January 2026 – 31
December 2028). To the extent that the awards vest, they will vest 75% on the
third anniversary of the Award Date and 25% vesting on the fourth anniversary
of the Award Date. A post-vesting holding period will then apply to each
tranche to ensure that there is a period of five years between grant and
release. Clawback and malus provisions apply to these awards.

 Name           Number of Shares subject to award                      
 PDMRs                                                                 
                Deferred Share Bonus Plan  PSP           TOTAL         
 Victoria Hyde  -                          328,405       328,405       

The following disclosures are made in accordance with Article 19 of the UK
Market Abuse Regulation.

 1. Details of the person discharging managerial responsibilities / person closely associated                        
 Name of natural person                                          Victoria Hyde                                       
 2. Reason for the notification                                                                                      
 1. Position/status                                              Chief Financial Officer                             
 1. Initial notification/amendment                               Initial Notification                                
 3. Details of the issuer, emission allowance market participant, auction platform, auctioneer or auction monitor    
 a. Full name of the entity                                      OSB GROUP PLC                                       
 b. Legal Entity Identifier code                                 213800ZBKL9BHSL2K459                                
 4. Details of the transaction(s):                                                                                   
 a. Description of the financial instrument, type of instrument  Ordinary shares of £0.01 each                       
 Identification code                                             GB00BLDRH360                                        
 b. Nature of Transaction                                        Grant of awards                                     
 c. Price(s) and Volume(s)                                       Price                     Volume                    
                                                                 Nil                       328,405                   
 d. Aggregated Information:                                      Aggregated volume 328,405 Aggregated price Nil      
 e. Date of transaction                                          8 May 2026                                          
 f. Place of transaction                                         Outside a trading venue                             

Enquiries:

 Jess Petrie                                                                        t: 01634 848 944  
 Group Head of Governance                                                                             
                                                                                                      
 Investor relations                                                                                   
 Alexander Holcroft Group Head of Investor Relations Email: osbrelations@osb.co.uk  t: 01634 838973   
                                                                                                      
 Brunswick                                                                                            
 Robin Wrench / Simone Selzer                                                       t: 020 7404 5959  

Notes to Editors

About OSB GROUP PLC

OSB began trading as a bank on 1 February 2011 and was admitted to the main
market of the London Stock Exchange in June 2014 (OSB.L). OSB joined the FTSE
250 index in June 2015. On 4 October 2019, OSB acquired Charter Court
Financial Services Group plc and its subsidiary businesses. On 30 November
2020, OSB GROUP PLC became the listed entity and holding company for the OSB
Group. The Group provides specialist lending and retail savings and is
authorised by the Prudential Regulation Authority, part of the Bank of
England, and regulated by the Financial Conduct Authority and Prudential
Regulation Authority. The Group reports under two segments, OneSavings Bank
and Charter Court Financial Services