Joon-Hyeok Seo

Chairman at SONO SQUARE CO.,LTD.

Net worth: 325 791 $ as of 2026-08-30

46 year

30 connections

Consumer Services

Distribution Services

Industrial Services

Profile

Joon-Hyeok Seo is currently Chief Executive Officer at Ki-an Corp.
and Austro Bridge, Ltd. Mr. Seo is Co-Chief Executive Officer at Daemyung Sono Co., Ltd. Mr. Seo is Chairman at SONO SQUARE Co., Ltd. Mr. Seo holds Director positions at Daemyung Leisure Industry Co., Ltd., Daemyung Construction Co., Ltd., U-Solbinet Co., Ltd., Daemyung Culturetainment Co., Ltd., and Daemyung Station Co., Ltd. Mr. Seo is a Non-Executive Director at Trinity Airways Co., Ltd., starting in 2025.
Mr. Seo completed undergraduate education at the University of Minnesota.

Known holdings in public companies

Company	Date	Number of shares	Valuation	Valuation date
SONO SQUARE CO.,LTD. 1.71%	2026-06-18	344,574 ( 1.71% )	325 791 $	2026-08-30

Joon-Hyeok Seo active positions

Companies	Position	Start
SONO SQUARE CO.,LTD.	Chairman	-
TRINITY AIRWAYS CO., LTD.	Director/Board Member	2025-06-23
Daemyung Sono Co., Ltd. Daemyung Sono Co., Ltd. Movies/EntertainmentConsumer Services Operates amusement and theme parks	Chief Executive Officer	-
Daemyung Leisure Industry Co., Ltd. Daemyung Leisure Industry Co., Ltd. Hotels/Resorts/Cruise linesConsumer Services Provides real estate services	Director/Board Member	-
Daemyung Construction Co., Ltd. Daemyung Construction Co., Ltd. Engineering & ConstructionIndustrial Services Provides civil engineering construction services	Director/Board Member	-
Ki-an Corp.	Chief Executive Officer	-
Daemyung Culturetainment Co., Ltd.	Director/Board Member	-
U-Solbinet Co., Ltd.	Director/Board Member	-
Austro Bridge, Ltd.	Chief Executive Officer	-
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All active positions of Joon-Hyeok Seo

Training of Joon-Hyeok Seo

Experiences
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Private companies

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Linked companies

Private companies	11
University of Minnesota University of Minnesota Other Consumer ServicesConsumer Services Functions as a College/University	Consumer Services
DAEMYUNG SONOSEASON CO., LTD. DAEMYUNG SONOSEASON CO., LTD. Wholesale DistributorsDistribution Services Wholesales and retails construction materials, bikes, industrial equipment and machines	Distribution Services
Daemyung Sono Co., Ltd. Daemyung Sono Co., Ltd. Movies/EntertainmentConsumer Services Operates amusement and theme parks	Consumer Services
Daemyung Leisure Industry Co., Ltd. Daemyung Leisure Industry Co., Ltd. Hotels/Resorts/Cruise linesConsumer Services Provides real estate services	Consumer Services
Daemyung Construction Co., Ltd. Daemyung Construction Co., Ltd. Engineering & ConstructionIndustrial Services Provides civil engineering construction services	Industrial Services
U-Solbinet Co., Ltd.
Ki-an Corp.
Tway Air Co., Ltd. Tway Air Co., Ltd. AirlinesTransportation Provides airline services	Transportation
Daemyung Culturetainment Co., Ltd.
Austro Bridge, Ltd.
Daemyung Station Co., Ltd. Daemyung Station Co., Ltd. Other Consumer ServicesConsumer Services Provides funeral services	Consumer Services