Sejin T S

세진티에스 · 067770

Information Technology Components · KOSDAQ

Small-cap

Market cap US$11.1M (₩15.3B)

Overview

Sejin T S makes the thin optical films, including reflective, protective, diffusion, and prism sheets, that sit inside LED and LCD flat-panel displays and control how light is spread and shaped on screen.

The company supplies these components to major display manufacturers and their related production partners in the television and monitor supply chain. Listed on KOSDAQ, Korea's tech-focused small-cap board, it operates through a parent company and a subsidiary, Sejin Optical, whose combined revenue is directly tied to the cyclical demand patterns of the global display industry.

Summary is AI-generated and may contain errors · figures from DART filings

Financials

Source: DART · FY ending Dec · latest FY2025
Revenue · FY2025
US$8.6M
▼ −9.7% YoY
Operating profit · FY2025
−US$150.2K
Turned to loss
Net income · FY2025
US$517.4K
▼ −77.2% YoY

Revenue

  • FY2023US$7.5M
  • FY2024US$9.5M
  • FY2025US$8.6M

Operating profit

  • FY2023−US$1.9M
  • FY2024US$533.4K
  • FY2025−US$150.2K

Net income

  • FY2023−US$1M
  • FY2024US$2.3M
  • FY2025US$517.4K

Key ratios (FY2025)

ROE
1.5%
Debt/Eq
3.1%
Op. margin
-1.7%
Net margin
6.0%
Rev. YoY
▼ −9.7%

Why it matters

The filing names Sejin Optical as a subsidiary, meaning the consolidated business spans more than one legal entity within the same display-components supply chain.

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For informational purposes only. This is not investment advice, a recommendation, or a solicitation to buy or sell any security. Do your own research; any investment decision is your own responsibility.

Data from DART, Korea's official corporate-filing system. Data sourced from official DART filings. Accuracy is not guaranteed. Figures are as of the date shown. As of 2026-06-12 (KST). · FX: 1 USD ≈ ₩1,380 (2026-06-01).

Company summaries are generated and may contain errors; financial figures are mapped directly from official filings.