Director/PDMR Shareholding

LEI: 213800ZBKL9BHSL2K459

OSB GROUP PLC
(the Company)

17 March 2025

Notification of Transactions of Persons Discharging Managerial Responsibilities (PDMRs)

The Company announces the following transaction by a PDMR on 17 March 2025 in the Company’s ordinary shares of £0.01 each, which include the vesting, exercise and sale of shares that had been granted pursuant to a Recruitment Award made under the Company’s 2020 Deferred Share Bonus Plan (DSBP).

The following notification made under Article 19 of the UK Market Abuse Regulation (UK MAR) relates to a transaction by a PDMR in the shares of the Company.

1. Details of the person discharging managerial responsibilities / person closely associated
Name of natural person	Victoria Hyde
2. Reason for the notification
a. Position/status	Chief Financial Officer
b. 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	Vesting of 2,407 Shares under the Recruitment Award Sale of 1,137 Shares vested under (1) to cover tax liabilities and dealing costs
c. Price(s) and Volume(s)	Price	Volume
	(1) Nil	2,407
	(2) £4.54835708	1,137
d. Aggregated Information:	Aggregated volume 2,407 1,137 Aggregated price Consideration Price: Nil Total Sale Price: £5,171.48
e. Date of transaction	17 March 2025
f. Place of transaction	(1) Outside a trading venue (2) London Stock Exchange, Main Market (XLON)

OSB GROUP PLC

Dionne Mortley-Forde	t: 01634 848 944
Group Head of Governance & Secretariat
Investor relations
Alastair Pate 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 PLCs

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.