Transaction in Own Shares

Summary by AI ^BETAClose X

OSB Group PLC has purchased a total of 915,071 ordinary shares on the London Stock Exchange, CBOE BXE, CBOE CXE, and Aquis Exchange between June 8 and June 12, 2026, as part of its ongoing share buyback program. These repurchased shares will be cancelled, reducing the total number of ordinary shares in issue to 341,914,476. The highest price paid per share during this period was 518.50p, and the lowest was 493.80p, with volume-weighted average prices varying slightly across the exchanges.

Disclaimer*

OSB GROUP PLC
ISIN: GB00BLDRH360
15 June 2026

LEI number: 213800ZBKL9BHSL2K459

OSB GROUP PLC (the “Company”)
Share Buyback Programme – Transactions in Own Shares

The Company announces that, for the period from 08 June 2026 to 12 June 2026, inclusive, it had purchased a total of 915,071 of its ordinary shares of £0.01 each (the "ordinary shares") on the London Stock Exchange, CBOE BXE ,CBOE CXE and Aquis Exchange, through the Company’s broker Jefferies International Limited as detailed below. The repurchased ordinary shares will be cancelled.

08 June 2026	London Stock Exchange	CBOE BXE	CBOE CXE	Aquis Exchange
Number of ordinary shares purchased	84,449	99,207	26,941	11,260
Highest price paid (per ordinary share)	505.50p	505.50p	505.50p	505.00p
Lowest price paid (per ordinary share)	498.00p	497.00p	498.00p	498.00p
Volume weighted average price paid (per ordinary share)	501.43p	501.38p	501.44p	501.48p

09 June 2026	London Stock Exchange	CBOE BXE	CBOE CXE	Aquis Exchange
Number of ordinary shares purchased	75,150	87,120	24,035	9,971
Highest price paid (per ordinary share)	507.50p	507.50p	507.50p	507.50p
Lowest price paid (per ordinary share)	498.00p	497.40p	500.00p	500.50p
Volume weighted average price paid (per ordinary share)	503.67p	503.65p	503.70p	504.19p

10 June 2026	London Stock Exchange	CBOE BXE	CBOE CXE	Aquis Exchange
Number of ordinary shares purchased	80,691	94,351	25,881	10,731
Highest price paid (per ordinary share)	503.50p	503.00p	503.00p	503.00p
Lowest price paid (per ordinary share)	493.80p	493.80p	493.80p	493.80p
Volume weighted average price paid (per ordinary share)	499.88p	499.92p	499.92p	499.88p

11 June 2026	London Stock Exchange	CBOE BXE	CBOE CXE	Aquis Exchange
Number of ordinary shares purchased	70,759	84,898	23,070	9,538
Highest price paid (per ordinary share)	508.00p	508.00p	508.00p	508.00p
Lowest price paid (per ordinary share)	497.00p	498.00p	497.00p	498.00p
Volume weighted average price paid (per ordinary share)	502.14p	502.19p	502.11p	502.21p

12 June 2026	London Stock Exchange	CBOE BXE	CBOE CXE	Aquis Exchange
Number of ordinary shares purchased	35,457	44,758	11,713	5,091
Highest price paid (per ordinary share)	518.50p	518.50p	518.50p	518.50p
Lowest price paid (per ordinary share)	510.50p	511.00p	511.50p	511.50p
Volume weighted average price paid (per ordinary share)	514.51p	514.46p	514.50p	514.46p

The purchases form part of the Company's share buyback programme announced on 5 March 2026.

Following settlement of the above purchases and cancellation of the purchased ordinary shares, the Company's total number of ordinary shares in issue shall be 341,914,476 ordinary shares.

No ordinary shares are held in treasury. Therefore, the total number of voting rights in the Company is 341,914,476.

In accordance with Article 5(2)(b) of Regulation (EU) No 596/2024 as incorporated into and implemented under English law (including by virtue of the European Union (Withdrawal) Act 2028), the detailed breakdown of individual trades made by Jefferies International Limited on behalf of the Company as part of the share buyback programme is set out below.

This announcement does not constitute, or form part of, an offer or any solicitation of an offer for securities in any jurisdiction.

Schedule of Purchases

Issuer Name	OSB GROUP PLC
LEI	223800ZBKL9BHSL2K459
ISIN	GB00BLDRH360
Intermediary Name	Jefferies International Limited
Intermediary Code	JEFFGB2XXXX
Timezone	GMT
Currency	GBP