Kulthorn Kirby Co., Ltd.

Name	Mrs. Supanee Chantasasawat
Age	57
Nationality	Thai
Position	Executive Vice President (Executive)
Date of appointment as director	1 August 2019
Number of ordinary share held in the company	7,251,122
Number of ordinary share held in the company	0.48341 %
Educational background	– SASIN Graduate Institute of Business Administration Chulalongkorn University, MBA (Marketing) – Chalalongkorn University, Bachelor of Accountancy
IOD training	2012 - 2013 Specialist Bar on Intellectual Property
Position in the company	Executive Vice President (Administration)
Positions held in other listed companies	None
Other position, present	None
Work experience	2018 – July 2019 Chief Strategy Officer Kulthorn Kirby Public Company 2012 – 2018 Executive Chairperson Kulthorn Group of Companies 1998 – 2012 Sales and Marketing Director Kulthorn Group of Companies 1994 – 1998 Procter & Gamble Manufacturing (Thailand) Assistant Brand Manager 1991 – 1992 Industrial Finance corporation of Thailand (IFCT) Credit Officer Social Activies 2018 National Legislative Assembly Working Group on Waste of Electrical and Electronics Equipment Law-Committee Member 2010 – Present Federation of Thai Industry • Member of the Board (2012 – 2014) • Air Conditioning Club Vice Chairman (2010 – Present) • Electrical, Electronic and Telecommunication Club Board Member (2018 – Present)

Name	Mr Paiboon Boonpermvitaya
Age	70
Nationality	Thai
Position	Executive Vice President (Manufacturing)
Date of appointment as director	11 June 2026
Number of ordinary share held in the company	2,178,825 shares
Number of ordinary share held in the company	0.145 %
Educational background	Bachelor Degree in Industrial Engineering, King Mongkut’s University of Technology Thonburi
IOD training	Director Certification Program (DCP) / 2011
Position in the company	Executive Vice President (Manufacturing)
Positions held in other listed companies	None
Other position, present	None
Work experience	2025 – Present To work in Kulthorn Kirby Public Company Limited

Name	Mr. Sutee Simakulthorn
Age	56
Nationality	Thai
Position	Acting President
Date of appointment as director	25 April 2018
Number of ordinary share held in the company	32,124,655 shares
Number of ordinary share held in the company	2.14164 %
Educational background	- Master Degree in Science in Management, Purdue University, U.S.A. - Bachelor Degree in Engineering, Chulalongkorn University
IOD training	Director Certification Program (DCP) / 2003
Position in the company	None
Positions held in other listed companies	None
Other position, present	Chairman/Managing Director - Kulthorn Premier Co., Ltd. Chairman - Kulthorn Kirby Foundry Co., Ltd. - Kulthorn Steel Co., Ltd. - Kulthorn Materials and Controls Co., Ltd. - Kulthorn Metal Products Co., Ltd. - Kulthorn Research and Development Co., Ltd. Director - Suzhon Kulthorn Magnet Wire Co., Ltd.
Work experience	1998 - Present To work in Kulthorn Kirby Public Company Limited 2003 - 10 April 2018 Director, Kulthorn Kirby Public Company Limited

Management Team