OSB GROUP PLC - Transaction In Own Shares

(MENAFN- GlobeNewsWire - Nasdaq) OSB GROUP PLC
ISIN: GB00BLDRH360
19 October 2026

LEI number: 213800ZBKL9BHSL2K459

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

The Company announces that, for the period from 12 October 2026 to 16 October 2026, inclusive, it had purchased a total of 1,090,103 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.

12 October 2026	London Stock Exchange	CBOE BXE	CBOE CXE	Aquis Exchange
Number of ordinary shares purchased	99,493	105,994	21,650	11,394
Highest price paid (per ordinary share)	495.60p	495.60p	495.60p	495.40p
Lowest price paid (per ordinary share)	488.60p	488.40p	488.60p	488.60p
Volume weighted average price paid (per ordinary share)	493.74p	493.77p	493.74p	493.81p

13 October 2026	London Stock Exchange	CBOE BXE	CBOE CXE	Aquis Exchange
Number of ordinary shares purchased	103,321	108,871	22,030	11,351
Highest price paid (per ordinary share)	501.00p	500.50p	500.50p	500.50p
Lowest price paid (per ordinary share)	492.40p	492.80p	492.80p	492.60p
Volume weighted average price paid (per ordinary share)	494.29p	494.31p	494.34p	494.30p

14 October 2026	London Stock Exchange	CBOE BXE	CBOE CXE	Aquis Exchange
Number of ordinary shares purchased	100,894	100,414	22,159	11,241
Highest price paid (per ordinary share)	496.00p	496.00p	496.20p	496.20p
Lowest price paid (per ordinary share)	490.60p	<>p	490.40p	490.60p
Volume weighted average price paid (per ordinary share)	493.51p	493.53p	493.48p	493.60p

15 October 2026	London Stock Exchange	CBOE BXE	CBOE CXE	Aquis Exchange
Number of ordinary shares purchased	71,525	65,952	15,282	7,951
Highest price paid (per ordinary share)	504.50p	504.50p	504.50p	504.00p
Lowest price paid (per ordinary share)	494.60p	494.60p	494.60p	495.00p
Volume weighted average price paid (per ordinary share)	497.96p	497.91p	497.92p	497.95p

16 October 2026	London Stock Exchange	CBOE BXE	CBOE CXE	Aquis Exchange
Number of ordinary shares purchased	94,012	85,953	20,383	10,233
Highest price paid (per ordinary share)	499.00p	499.00p	499.20p	499.00p
Lowest price paid (per ordinary share)	492.20p	492.40p	492.40p	492.40p
Volume weighted average price paid (per ordinary share)	495.74p	495.74p	495.75p	495.79p

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 335,424,130 ordinary shares.

No ordinary shares are held in treasury. Therefore, the total number of voting rights in the Company is 335,424,130.
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

Individual Transactions:

Please see attached PDF for full list of transactions.

Attachment

• 2026.10.16_OSBG Buyback Fills

MENAFN19102026004107003653ID1111828824