Director/PDMR Shareholding

4 April 2024

OSB GROUP PLC
(the Company)

Notification of Transactions of Persons Discharging Managerial Responsibilities (PDMRs) and Persons Closely Associated (PCA)

The Company was notified that Jason Elphick (a PDMR) sold 5,959 ordinary shares of £0.01 each of the Company and his PCAs purchased 5,959 ordinary shares of £0.01 each of the Company.

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	Jason Elphick
2. Reason for the notification
a. Position/status	Group General Counsel and Company Secretary
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	Sale of 5,959 shares from nominee account
c. Price(s) and Volume(s)	Price	Volume
	£3.787823	5,959
d. Aggregated Information:	Aggregated volume 5,959 Aggregated price Total Sale Price: £22,571.64
e. Date of transaction	3 April 2024
f. Place of transaction	London Stock Exchange, Main Market (XLON)

1. Details of the person discharging managerial responsibilities / person closely associated
Name of natural person	Valeryane Elphick
2. Reason for the notification
c. Position/status	Spouse of Jason Elphick, Group General Counsel and Company Secretary
d. 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	Purchase of 5,232 shares
c. Price(s) and Volume(s)	Price	Volume
	£3.793596	5,232
d. Aggregated Information:	Aggregated volume 5,232 Aggregated price Total Purchase Price: £19,848.09
e. Date of transaction	2 April 2024
f. Place of transaction	London Stock Exchange, Main Market (XLON)

1. Details of the person discharging managerial responsibilities / person closely associated
Name of natural person	Louis Elphick
2. Reason for the notification
e. Position/status	Son of Jason Elphick, Group General Counsel and Company Secretary
f. 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	Purchase of 727 shares
c. Price(s) and Volume(s)	Price	Volume
	£3.780712	727
d. Aggregated Information:	Aggregated volume 727 Aggregated price Total Purchase Price: £2,748.58
e. Date of transaction	2 April 2024
f. Place of transaction	London Stock Exchange, Main Market (XLON)

OSB GROUP PLC

Dionne Mortley-Forde	t: 01634 848 944
Group Head of Company Secretariat
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.