OSB GROUP PLC - Transaction in Own Shares

Core Viewpoint - OSB Group PLC has announced the purchase of 119,220 ordinary shares as part of its share buyback program, which will be cancelled following the settlement of these purchases, resulting in a total of 359,639,905 ordinary shares in issue [3][5]. Summary by Sections Share Buyback Details - On October 10, 2025, OSB Group PLC purchased a total of 119,220 ordinary shares at prices ranging from 551.00p to 560.00p, with a volume-weighted average price of 554.64p [3][4]. - The share buyback program was initially announced on March 13, 2025 [4]. Trading Venue and Prices - The shares were purchased on the London Stock Exchange, CBOE BXE, and CBOE CX, with the highest price paid being 560.00p and the lowest at 551.00p [4]. - The detailed breakdown of individual trades conducted by Citigroup Global Markets Limited on behalf of the company is provided, showing various transactions at different prices and volumes [6][8]. Impact on Shares and Voting Rights - Following the cancellation of the repurchased shares, the total number of ordinary shares in issue will be 359,639,905, with no shares held in treasury, thus maintaining the same number of voting rights [5].