Management Name : Mr PHAITHOON KIJSAMREJ | Type of securities : Common share | Methods of Acquisition / Disposition : Sell | Transaction Date : 13/01/2016

Management Name : Mr PHAITHOON KIJSAMREJ | Type of securities : Common share | Methods of Acquisition / Disposition : Sell | Transaction Date : 18/10/2016

Management Name : Mr PHAITHOON KIJSAMREJ | Type of securities : Common share | Methods of Acquisition / Disposition : Transfer | Transaction Date : 09/08/2017

Management Name : Mr SATID SUDBUNTAD | Type of securities : Common share | Methods of Acquisition / Disposition : Buy | Transaction Date : 13/11/2017

Management Name : Mr SATID SUDBUNTAD | Type of securities : Common share | Methods of Acquisition / Disposition : Buy | Transaction Date : 14/05/2018

Management Name : Mr SATID SUDBUNTAD | Type of securities : Common share | Methods of Acquisition / Disposition : Buy | Transaction Date : 15/05/2018

Management Name : Mr WARAYU PRADIPASEN | Type of securities : Common share | Methods of Acquisition / Disposition : Buy | Transaction Date : 09/10/2017

2.22 percent. As a result of effective ownership transferring was increased. These include Diamant Condominium, Baan Pha Piyarom Lake Grande, Baan Pha Piyarom Tendo, Baan Pha Piyarom Townee Don Wai and

Period As Of Details DIAMOND BUILDING PRODUCTS PUBLIC COMPANY LIMITED 2023 Reviewed Company Q2 30/06/2023 DIAMOND BUILDING PRODUCTS PUBLIC COMPANY LIMITED 2023 Reviewed Consolidated Q2 30/06/2023 DIAMOND

Year Receive Date Details DIAMOND BUILDING PRODUCTS PUBLIC COMPANY LIMITED 2022 30/03/2023 DIAMOND BUILDING PRODUCTS PUBLIC COMPANY LIMITED 2021 22/03/2022 DIAMOND BUILDING PRODUCTS PUBLIC COMPANY