MATERIALS · KOSPI · 005950

ISU Chemical

이수화학Small-capChemicals

What the company does

ISU Chemical makes the raw materials used in synthetic detergents, primarily linear alkylbenzene (LAB) and related petrochemical compounds, and supplies them to manufacturers of cleaning and personal-care products.

Listed on KOSPI, Korea's main stock exchange, the company operates through three divisions: petrochemicals, construction, and biopharmaceuticals. The petrochemical division, which runs plants in Ulsan and Onsan, accounts for the large majority of consolidated revenue, while the construction arm operates under the residential brand 'Brownstone' and the pharmaceutical subsidiary markets biosimilar drugs.

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

Financials

Source: DART · FY ending Dec · latest FY2025
Revenue · FY2025
US$1.2B
▼ −13.4% YoY
Operating profit · FY2025
US$5M
Turned profitable
Net income · FY2025
−US$29.4M
Loss widened

Revenue

  • FY2023US$1.4B
  • FY2024US$1.4B
  • FY2025US$1.2B

Operating profit

  • FY2023−US$40.6M
  • FY2024−US$37.3M
  • FY2025US$5M

Net income

  • FY2023−US$20.3M
  • FY2024−US$27.7M
  • FY2025−US$29.4M

Key ratios (FY2025)

ROE
-18.3%
Debt/Eq
305.0%
Op. margin
0.4%
Net margin
-2.4%
Rev. YoY
▼ −13.4%

Why it matters · Context, not a recommendation

ISU Chemical's pharmaceutical subsidiary, ISU Apgis, is a separate operating company within the consolidated group, commercializing biosimilar medicines including Clotinab, Abcertin, and Fabagal.

Filings

All disclosures · English when translated

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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.