Director/PDMR Shareholding

28 June 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 2,025 ordinary shares of £0.01 each in the Company, on 27 June 2024, and 10,246 ordinary shares of £0.01 each in the Company on 28 June 2024. Subsequently, he repurchased 927 ordinary shares of £0.01 each in the Company into his ISA and his PCAs purchased 1,098 ordinary shares of £0.01 each of the Company.

The Company was also notified that Lisa Odendaal (a PDMR) sold 11,300 ordinary shares of £0.01 each in the Company and that Jens Bech (a PDMR) sold 26,691 ordinary shares of £0.01 each in the Company.

The following notifications are made under Article 19 of the UK Market Abuse Regulation (UK MAR) and relates to transactions by PDMRs 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	(i) Sale of 2,025 shares from nominee account (ii) Purchase of 927 shares into ISA account (iii) Sale of 10,246 shares
c. Price(s) and Volume(s)	Price	Volume
	i. £4.403422	i. 2,025
	ii. £4.418292	ii. 927
	iii. £4.310624	iii. 10,246
d. Aggregated Information:	Aggregated volume 2,025 927 10,246 Aggregated price Total Sale Price: £8,916.93 Total Purchase Price: £4,095.76 Total Sale Price: £44,166.65
e. Date of transaction	i. and ii. 27 June 2024 iii. 28 June 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 815 shares
c. Price(s) and Volume(s)	Price	Volume
	£4.417011	815
d. Aggregated Information:	Aggregated volume 815 Aggregated price Total Purchase Price: £3,599.86
e. Date of transaction	27 June 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 283 shares
c. Price(s) and Volume(s)	Price	Volume
	£4.415027	283
d. Aggregated Information:	Aggregated volume 283 Aggregated price Total Purchase Price: £1,249.45
e. Date of transaction	27 June 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	Lisa Odendaal
2. Reason for the notification
g. Position/status	Group Chief Internal Auditor
h. 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 11,300 shares
c. Price(s) and Volume(s)	Price	Volume
	£4.360018	11,300
d. Aggregated Information:	Aggregated volume 11,300 Aggregated price Total Sale Price: £49,268.20
e. Date of transaction	28 June 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	Jens Bech
2. Reason for the notification
a. Position/status	Group Commercial Director
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 26,691 shares
c. Price(s) and Volume(s)	Price	Volume
	£4.38543	26,691
d. Aggregated Information:	Aggregated volume 26,691 Aggregated price Total Sale Price: £117,051.51
e. Date of transaction	28 June 2024
f. Place of transaction	London Stock Exchange, Main Market (XLON)

OSB GROUP PLC

Jason Elphick	t: 01634 848 944
Group General Counsel and Company Secretary

Investor relations Alaistair 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.