ISU Chemical

이수화학 · 005950

Materials Chemicals · KOSPI

Small-cap

Market cap US$242.4M (₩334.5B)

Overview

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, operating profit and net income by fiscal year (USD; KRW in parentheses).
Metric	FY2023	FY2024	FY2025
Revenue	US$1.4B(₩2T)	US$1.4B(₩1.9T)	US$1.2B(₩1.7T)
Operating profit	−US$40.6M(−₩56B)	−US$37.3M(−₩51.4B)	US$5M(₩6.9B)
Net income	−US$20.3M(−₩28.1B)	−US$27.7M(−₩38.2B)	−US$29.4M(−₩40.5B)

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

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

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