Reporting Person : - | Type of securities : - | Date of reporting obligation : 11/02/2014

Management Name : Mr SLIB SOONGSWANG | Type of securities : Common share | Methods of Acquisition / Disposition : Sell | Transaction Date : 13/12/2017

Management Name : Mr SURACHET CHAIPATAMANONT | Type of securities : Common share | Methods of Acquisition / Disposition : Buy | Transaction Date : 22/06/2018

Management Name : Air Chief Marshal SURASAK MEEMANEE | Type of securities : Common share | Methods of Acquisition / Disposition : Sell | Transaction Date : 17/01/2018

Of Details HYDROTEK PUBLIC COMPANY LIMITED 2021   Consolidated Year 31/12/2021 HYDROTEK PUBLIC COMPANY LIMITED 2021   Company Year 31/12/2021 HYDROTEK PUBLIC COMPANY LIMITED 2021 Reviewed Consolidated

Receive Date Details HYDROTEK PUBLIC COMPANY LIMITED 2021 31/03/2022 HYDROTEK PUBLIC COMPANY LIMITED 2020 29/03/2021 HYDROTEK PUBLIC COMPANY LIMITED 2019 23/07/2020 HYDROTEK PUBLIC COMPANY LIMITED 2018 04

, Chatuchak, Bangkok 10900, Thailand Fax : (662) 936-1669 ทะเบียนเลขที่ 0107554000097 Registration No. 0107554000097 HYDROTEK PUBLIC COMPANY LIMITED บริษทั ไฮโดรเท็ค จ ำกดั (มหำชน) (Translation) No. 091/1060 9

, Chatuchak, Bangkok 10900, Thailand Fax : (662) 936-1669 ทะเบียนเลขท่ี 0107554000097 Registration No. 0107554000097 HYDROTEK PUBLIC COMPANY LIMITED บริษทั ไฮโดรเท็ค จ ำกดั (มหำชน) On May 13, 2019, Mr

HYDROTEK PUBLIC COMPANY LIMITED I TWO ENTERPRISE PUBLIC COMPANY LIMITED I&I GROUP PUBLIC COMPANY LIMITED I-TAIL CORPORATION PUBLIC COMPANY LIMITED I.C.C. INTERNATIONAL PUBLIC COMPANY LIMITED ICHITAN GROUP

, Chatuchak, Bangkok 10900, Thailand Fax : (662) 936-1669 ทะเบียนเลขท่ี 0107554000097 Registration No. 0107554000097 HYDROTEK PUBLIC COMPANY LIMITED บริษทั ไฮโดรเท็ค จ ำกดั (มหำชน) 22 August 2019 Subject