![Prateep Tangmatitham](data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="%231b1b1b" class="bi bi-person-fill" viewBox="0 0 16 16"><path d="M3 14s-1 0-1-1 1-4 6-4 6 3 6 4-1 1-1 1zm5-6a3 3 0 1 0 0-6 3 3 0 0 0 0 6"/></svg>)
Prateep Tangmatitham
Chief Executive Officer at
SUPALAI
Net worth: 519 M $ as of 31/05/2026
Profile
Prateep Tangmatitham is the founder of Supalai Public Co., Ltd., founded in 1989, holding the title of Chairman & Chief Executive Officer.
Dr. Tangmatitham was the founder of Thai Condominium Association, founded in 2000, holding the title of President from 2000 to 2010.
Current jobs include Chairman at Supalai Property Management Co., Ltd. since 1993, Chairman at Supalai Northeast Co., Ltd. since 1993, Chairman at Supalai Singapore Holdings Pte Ltd. since 2014, Chairman at Supalai Officer Development Pty Ltd. since 2014, Chairman at Supalai Rippleside Development Pty Ltd. since 2015, Chairman at Supalai Australia Holdings Pty Ltd. since 2014, Chairman at Balmoral Quay Pty Ltd. since 2020, Director at Haadyai Nakarin Co., Ltd. since 1989, Director at Association of Siamese Architects since 2019, Director at Supalai Greenvale Development Pty Ltd. since 2015, Director at Phuket Estate Co., Ltd. since 1989, Director at Supalai Philippines, Inc. since 2013, Director at Durafloor Co. Ltd. since 1989, President-Alumni Association Thailand Chapter at the University of Illinois since 2012, Vice President at Thai Listed Companies Association since 2011, Vice President at King Prajadhipok's Institute since 2011, Vice President at Thai Appraisal Foundation since 2020, and Vice President at Teo Aun Association since 2015.
Education history includes undergraduate degree from the University of Chulalongkorn, graduate degree from the University of Illinois At Urbana–Champaign, and doctorate degree from Thammasat University.
Known holdings in public companies
| Company | Date | Number of shares | Valuation | Valuation date |
|---|---|---|---|---|
SUPALAI PUBLIC CO., LTD. 34.53% | 31/12/2025 | 674,359,855 ( 34.53% ) | 321 M $ | 31/05/2026 |
The Siam Cement Public Co. Ltd.
 The Siam Cement Public Co. Ltd. Construction MaterialsNon-Energy Minerals Operates as a holding company whose subsidiaries manufactures and distributes cement, ready-mixed concrete and chemical products 1.01% | 13/02/2025 | 12,090,200 ( 1.01% ) | 84 M $ | 31/05/2026 |
Banpu Public Co. Ltd.
 Banpu Public Co. Ltd. CoalEnergy Minerals Engages in production and sale of coal, natural gas, thermal & renewable electricity and manufactures solar rooftops & electric vehicles 2.49% | 31/12/2025 | 249,561,298 ( 2.49% ) | 44 M $ | 31/05/2026 |
Ratch Group Public Co. Ltd.
 Ratch Group Public Co. Ltd. Electric UtilitiesUtilities Generates, supplies and distributes electricity 1.26% | 13/03/2026 | 27,335,450 ( 1.26% ) | 26 M $ | 31/05/2026 |
TPI Polene Public Co. Ltd.
 TPI Polene Public Co. Ltd. Construction MaterialsNon-Energy Minerals Produces and distributes cement, clinker, ready-made mixed concrete, tiles, lightweight bricks & petrochemicals and chemicals & operates as a power plant 2.13% | 12/03/2026 | 406,497,400 ( 2.13% ) | 10 M $ | 31/05/2026 |
Bangkok Land Public Co. Ltd.
 Bangkok Land Public Co. Ltd. Real Estate DevelopmentFinance Develops and sells land, condominium and houses 4.23% | 29/07/2025 | 734,402,900 ( 4.23% ) | 10 M $ | 31/05/2026 |
Thoresen Thai Agencies Public Co. Ltd.
 Thoresen Thai Agencies Public Co. Ltd. Marine ShippingTransportation Provides sea shipping and related freight transportation services 3.23% | 20/03/2026 | 58,943,307 ( 3.23% ) | 10 M $ | 31/05/2026 |
TPI Polene Power Public Co., Ltd.
 TPI Polene Power Public Co., Ltd. Electric UtilitiesUtilities Operates waste heat recovery power plants 1.97% | 13/03/2025 | 165,744,200 ( 1.97% ) | 9 M $ | 31/05/2026 |
SCG Decor Public Co., Ltd.
 SCG Decor Public Co., Ltd. Building ProductsProducer Manufacturing Operates as a holding company whose subsidiaries manufactures floor and wall tiles 2.04% | 13/08/2025 | 33,601,443 ( 2.04% ) | 5 M $ | 31/05/2026 |
Prateep Tangmatitham active positions
| Companies | Position | Start |
|---|---|---|
| SUPALAI | Chief Executive Officer | 26/06/1989 |
Supalai Officer Development Pty Ltd. | Chairman | 01/01/2014 |
Thai Appraisal Foundation | Corporate Officer/Principal | 01/01/2020 |
Balmoral Quay Pty Ltd. | Chairman | 01/01/2020 |
Durafloor Co. Ltd. | Director/Board Member | 01/01/1989 |
Supalai Philippines, Inc.
 Supalai Philippines, Inc. Real Estate DevelopmentFinance Provides real estate services | Director/Board Member | 01/01/2013 |
Phuket Estate Co., Ltd.
 Phuket Estate Co., Ltd. Real Estate DevelopmentFinance Provides real estate development services | Director/Board Member | 01/01/1989 |
Teo Aun Association | Corporate Officer/Principal | 01/01/2015 |
Supalai Australia Holdings Pty Ltd. | Chairman | 01/01/2014 |
| ░░░░░░░ ░░░░░░░░░░ ░░░░░░░░░░░ ░░░ ░░░░ | ░░░░░░░░ | ░░░░░░░░░░ |
| ░░░░░░░ ░░░░░░░░░ ░░░░░░░░░░░ ░░░ ░░░░ | ░░░░░░░░░░░░░░ ░░░░░░ | - |
Former positions of Prateep Tangmatitham
| Companies | Position | End |
|---|---|---|
| ░░░░ ░░░░░░░░░░░ ░░░░░░░░░░░ | ░░░░░░░ | ░░░░░░░░░░ |
Training of Prateep Tangmatitham
Experiences
Positions held
Active
Inactive
Listed companies
Private companies
Connections
60
1st degree connections
23
1st degree companies
Male
Female
Members of the board
Executives
Linked companies
| Private companies | 23 |
|---|---|
Supalai Public Co., Ltd.
 Supalai Public Co., Ltd. Real Estate DevelopmentFinance Provides real estate property development, sales and rental services | Finance |
University of Illinois
 University of Illinois Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
University of Chulalongkorn
 University of Chulalongkorn Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
Haadyai Nakarin Co., Ltd.
 Haadyai Nakarin Co., Ltd. Real Estate DevelopmentFinance Offers real estate development service | Finance |
Thammasat University
 Thammasat University Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
Thai Listed Companies Association
 Thai Listed Companies Association Thai Listed Companies Association is a company. 'The company is based in Bangkok, Thailand. | |
Thai Condominium Association | |
King Prajadhipok's Institute
 King Prajadhipok's Institute Other Consumer ServicesConsumer Services Operates as an academic organization | Consumer Services |
Supalai Property Management Co., Ltd.
 Supalai Property Management Co., Ltd. Hotels/Resorts/Cruise linesConsumer Services Operates resort, hotel and spa and offers online booking services | Consumer Services |
Thai Appraisal Foundation | |
Supalai Northeast Co., Ltd. | |
Association of Siamese Architects | |
Supalai Singapore Holdings Pte Ltd. | |
Supalai Greenvale Development Pty Ltd. | |
Supalai Officer Development Pty Ltd. | |
Supalai Rippleside Development Pty Ltd. | |
Supalai Australia Holdings Pty Ltd. | |
Teo Aun Association | |
University of Illinois At Urbana–Champaign
 University of Illinois At Urbana–Champaign Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
Phuket Estate Co., Ltd.
Phuket Estate Co., Ltd. Real Estate DevelopmentFinance Provides real estate development services | Finance |
Supalai Philippines, Inc.
Supalai Philippines, Inc. Real Estate DevelopmentFinance Provides real estate services | Finance |
Durafloor Co. Ltd. | |
Balmoral Quay Pty Ltd. |
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