REG — Forterra plc — Transaction in Own Shares

For best results when printing this announcement, please click on link below: RNS Number: 5668V Forterra plc 21 September 2026 21st September 2026 Forterra plc ("Forterra" or the "Company") Transaction in Own Shares Forterra plc (“Forterra” or the “Company”) announces that it has purchased the following number of its ordinary shares of 1.0 pence each through Deutsche Bank AG, London Branch (trading for these purposes as Deutsche Numis) ("Deutsche Numis") in the period from 14th September to 18th September 2026. Date Venue Aggregated volume Volume-weighted average price (p) Lowest price per share (p) Highest price per share (p) 14 September 2026 XLON 87,000 134.8379 133.6 137.2 15 September 2026 XLON 87,000 134.7850 132.8 136.4 16 September 2026 XLON 50,000 138.6611 135.8 140.0 17 September 2026 XLON 86,000 138.1745 137.0 140.0 18 September 2026 XLON 86,000 136.3378 134.2 137.4 The Company intends to cancel the purchased shares. Schedule of Purchases — Individual Transactions In accordance with Article 5(1)(b) of Market Abuse Regulation (EU) No 596/2014 (as it forms part.