TMC Co., Ltd. (Ticker: 217590 KS) is a South Korean industrial manufacturer specializing in marine and optical cables. The company produces a diverse range of products including shipboard, offshore, and fiber optic cables, reportedly holding over 50% of the domestic ship cable market. Key clients include major shipbuilders such as HD Korea Shipbuilding, Hanwha Ocean, and Samsung Heavy Industries. TMC plans to list on the Korea Exchange on December 15, 2025, offering 6,100,000 shares at a fixed price of KRW 9,300 per share.

The IPO aims to raise KRW 56.73 billion (approximately USD 40 million), giving the company a post-listing valuation of roughly KRW 224 billion (approx. USD 160 million). The offering was lead-managed by Mirae Asset Securities. Notably, the institutional demand forecast resulted in a competition rate of 959.96:1, with 53.42% of institutions committing to a mandatory lock-up period. Structurally, TMC is a subsidiary of KPF Co., Ltd., which retains a controlling interest post-listing. The company is actively pursuing overseas expansion, having established a US branch in 2023 and secured supply agreements with Amphenol Corp to capture growing demand in the North American data infrastructure sector.