Kostecsys
Daily close in US$ at the latest USD/KRW close. Source: KRX via FinanceDataReader.
Kostecsys develops packaging and thermal-management components for power semiconductors, the chips that control and convert electrical power in demanding applications.
Its products are aimed at makers of power semiconductor modules and high-performance computing systems that need to handle high heat and high power density. The company is focused on a shift from traditional wire-bonding interconnects to metal-block-based connections, such as copper blocks and copper clips, which offer lower electrical resistance and better heat dissipation. It is listed on KOSDAQ, South Korea's tech-focused small-cap exchange.
Summary is AI-generated and may contain errors · figures from DART filings
Kostecsys in five facts
What does Kostecsys do?
Kostecsys develops packaging and thermal-management components for power semiconductors, the chips that control and convert electrical power in demanding applications.
Where is Kostecsys listed and in which sector?
Kostecsys (Korean name: 코스텍시스) trades under KRX code 355150 on KOSDAQ, the Korea Exchange's board for smaller and growth companies. It is classified in the Information Technology sector, Semiconductors.
How large is Kostecsys?
Its market capitalisation was US$108.8M on 2026-10-21, which puts it in this site's small-cap group. US$ amounts are converted from won at 1 USD ≈ ₩1,325 (2026-10-21).
What were Kostecsys's latest annual revenue and operating profit?
For fiscal year 2025, Kostecsys reported revenue of US$11.5M, operating profit of US$139.1K and a net loss of US$424.6K, per its annual report on DART (data retrieved from DART on 2026-06-04). Revenue was up 7.1% on the previous year.
Where does this data come from?
Financial statements and filings come from DART, Korea's official corporate-filing system. Share prices, market capitalisation and trading status come from KRX. Company summaries are AI-generated from the filings and may contain errors; financial figures are mapped directly from DART.
Data sources and last updated
- Filings and financial statements
- DART (dart.fss.or.kr), Korea's official corporate-filing system
- Prices, market cap, trading status
- KRX (Korea Exchange), via FinanceDataReader
- Latest annual financials
- Fiscal year 2025, data retrieved from DART on 2026-06-04
- Share price and market cap
- Close of 2026-10-21
- Currency
- US$, converted from won at 1 USD ≈ ₩1,325 (2026-10-21 close)
- Company data updated
- 2026-10-21
- Company summary
- AI-generated from filings; may contain errors. Information only, not investment advice.
- Investor relations (IR) meetingOct 6
- Operating results (preliminary) (fair disclosure)
Kostecsys filed provisional (unaudited) separate results for Q2 2026: revenue of US$3.68M (+66.9% year on year), operating profit of US$816K (from a loss a year earlier) and net income of US$621K (from a loss a year earlier).
Earnings · Jul 28 - Change of 30% or more in revenue or profit/loss structure (15% for large companies)
Kostecsys reported separate results for FY2025: revenue of US$10.5M (+7.1% year on year), operating profit of US$127K (from a loss a year earlier) and a net loss of US$389K.
Earnings · Feb 4 - [Amended] Supply contract signedSupply contract · Jan 22