STX Engine
Daily close in US$ at the latest USD/KRW close. Source: KRX via FinanceDataReader.
STX Engine makes diesel and high-speed engines for ships, land-based power generation, and military vehicles and vessels, as well as electronic and communications equipment for defense use.
Its customers span commercial shipbuilders and industrial operators on the civilian side, and the South Korean army and navy on the defense side, with the government defense procurement agency among its named major buyers. Listed on KOSPI, Korea's main stock exchange, the company organizes its business across three divisions: civilian engines, specialized military engines, and defense electronics.
Summary is AI-generated and may contain errors · figures from DART filings
The company supplies defense electronics, including underwater acoustics, radar, and tactical communications systems, alongside its core engine business, making it active across two distinct defense-industrial segments.
STX Engine in five facts
What does STX Engine do?
STX Engine makes diesel and high-speed engines for ships, land-based power generation, and military vehicles and vessels, as well as electronic and communications equipment for defense use.
Where is STX Engine listed and in which sector?
STX Engine (Korean name: STX엔진) trades under KRX code 077970 on KOSPI, the main board of the Korea Exchange. It is classified in the Industrials sector, Machinery.
How large is STX Engine?
Its market capitalisation was US$530M on 2026-10-21, which puts it in this site's small-cap group. US$ amounts are converted from won at 1 USD ≈ ₩1,325 (2026-10-21).
What were STX Engine's latest annual revenue and operating profit?
For fiscal year 2025, STX Engine reported revenue of US$595.8M, operating profit of US$52.5M and net income of US$52M, per its annual report on DART (data retrieved from DART on 2026-09-17). Revenue was up 8.9% on the previous year.
Where does this data come from?
Financial statements and filings come from DART, Korea's official corporate-filing system. Share prices, market capitalisation and trading status come from KRX. Company summaries are AI-generated from the filings and may contain errors; financial figures are mapped directly from DART.
Data sources and last updated
- Filings and financial statements
- DART (dart.fss.or.kr), Korea's official corporate-filing system
- Prices, market cap, trading status
- KRX (Korea Exchange), via FinanceDataReader
- Latest annual financials
- Fiscal year 2025, data retrieved from DART on 2026-09-17
- Share price and market cap
- Close of 2026-10-21
- Currency
- US$, 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.
- Resolution to convene a general shareholders' meetingOct 8
- Notice of general shareholders' meetingOct 8
- Shareholder register closure / record date setSep 1
- [Amended] Supply contract signed
STX Engine updated a previously disclosed supply contract with Defense Acquisition Program Administration (DAPA), now worth US$23.7M, about 6.18% of its recent annual revenue, running through Sep 2026.
Supply contract · Aug 10 - Supply contract signed
STX Engine disclosed a supply contract with New Times Shipbuilding Co.,Ltd, worth US$54.1M, about 9.96% of its recent annual revenue, running through Jul 2029.
Supply contract · Jul 28 - [Amended] Supply contract signed
STX Engine updated a previously disclosed supply contract with Defense Acquisition Program Administration (DAPA), now worth US$22.2M, about 6.18% of its recent annual revenue.
Supply contract · Mar 30 - Supply contract signed
STX Engine disclosed a supply contract with Hanwha Aerospace, worth US$35.8M, about 7.4% of its recent annual revenue, running through Jul 2027.
Supply contract · Mar 25 - Supply contract signed
STX Engine disclosed a supply contract with Hanwha Aerospace, worth US$177M, about 36.49% of its recent annual revenue, running through Nov 2028.
Supply contract · Mar 25 - [Amended] Supply contract signed
STX Engine updated a previously disclosed supply contract with Hanwha Aerospace, now worth US$89.1M, about 24.33% of its recent annual revenue, running through Sep 2027.
Supply contract · Mar 24 - Change of 30% or more in revenue or profit/loss structure (15% for large companies)
STX Engine reported consolidated results for FY2025: revenue of US$553M (+8.9% year on year), operating profit of US$48.8M (+64.8% year on year) and net income of US$48.3M (+153.3% year on year).
Earnings · Feb 26 - [Amended] Supply contract signed
STX Engine updated a previously disclosed supply contract with Defense Acquisition Program Administration (DAPA), now worth US$23.3M, about 6.18% of its recent annual revenue, running through Mar 2026.
Supply contract · Feb 13 - Supply contract signedSupply contract · Jan 9