Kulthorn Kirby Co., Ltd.

Name	Mr. Sutee Simakulthorn
Age	56
Nationality	Thai
Position	Acting President
message.form_date_of_appointment_management	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
message.form_iod_management	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

Name	Mr Paiboon Boonpermvitaya
Age	70
Nationality	Thai
Position	Executive Vice President (Manufacturing)
message.form_date_of_appointment_management	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
message.form_iod_management	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	Mrs. Supanee Chantasasawat
Age	57
Nationality	Thai
Position	Executive Vice President (Executive)
message.form_date_of_appointment_management	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
message.form_iod_management	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)

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Company Structure :

Company StructureManagement Team

Mr. Sutee Simakulthorn

Mr Paiboon Boonpermvitaya

Mrs. Supanee Chantasasawat