OSB GROUP PLC - Director/PDMR Shareholding

LEI: 213800ZBKL9BHSL2K459

17 September 2026

OSB GROUP PLC
(the Company)

Notification of Transactions of Persons Discharging Managerial Responsibilities (PDMRs)

This announcement should be read in conjunction with the announcements relating to Enrique Alvarez Labiano’s appointment made on 20 February 2026 and 23 April 2026.

Enrique Alvarez Labiano joined the Group on 1 September 2026. It was agreed that he would receive deferred cash and deferred share awards to replace, on a like for like basis, unvested awards forfeited on leaving his previous employer.

The Company hereby notifies the grant of awards over ordinary shares of £0.01 each (Shares) in the capital of the Company to Enrique Alvarez Labiano in connection with his recruitment as Chief Executive Officer. The awards were granted under Listing Rule 9.3.2, on terms substantially similar to the Company’s Performance Share Plan (PSP) and Deferred Bonus Plan, on 17 September 2026 (the Award Date) and are intended to replace unvested awards forfeited from leaving his previous employer.

The number of Shares subject to the award was determined by reference to the closing share prices of the Company and Enrique Alvarez Labiano’s previous employer on the date he served his notice (20 February 2026).

The awards are subject to the vesting schedules that mirror those of the forfeited awards and will vest in tranches between September 2026 and March 2030. The awards are granted in accordance with the regulatory requirements applicable to recruitment buy-out awards.

Name	Number of Shares subject to award
PDMRs
	Recruitment Award	TOTAL
Enrique Alvarez Labiano	915,082	915,082

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	Enrique Alvarez Labiano
2. Reason for the notification
Position/status	Chief Executive Officer
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	915,082
d. Aggregated Information:	Aggregated volume 915,082 Aggregated price Nil
e. Date of transaction	17 September 2026
f. Place of transaction	Outside a trading venue

Enquiries:

Jess Petrie
Head of Corporate Governance Email: [e-mail]
Investor relations
Alexander Holcroft Group Director of Investor Relations Email: [e-mail]
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.