IS Dongseo
Daily close in US$ at the latest USD/KRW close. Source: KRX via FinanceDataReader.
IS Dongseo makes precast concrete and other building materials used in construction, and also develops and supplies residential and commercial properties such as apartments and retail spaces.
Its customers include construction contractors and homebuyers across South Korea, with both its concrete and construction divisions serving the domestic market exclusively. Listed on KOSPI, Korea's main stock exchange, the company operates across three core divisions, concrete products, construction, and environmental services, with the environmental segment, which handles waste recycling, aggregate supply, waste treatment, and used-battery recycling, accounting for the largest share of consolidated revenue.
Summary is AI-generated and may contain errors · figures from DART filings
IS Dongseo in five facts
What does IS Dongseo do?
IS Dongseo makes precast concrete and other building materials used in construction, and also develops and supplies residential and commercial properties such as apartments and retail spaces.
Where is IS Dongseo listed and in which sector?
IS Dongseo (Korean name: 아이에스동서) trades under KRX code 010780 on KOSPI, the main board of the Korea Exchange. It is classified in the Materials sector, Construction Materials.
How large is IS Dongseo?
Its market capitalisation was US$320.6M on 2026-10-21, which puts it in this site's small-cap group. US$ amounts are converted from won at 1 USD ≈ ₩1,325 (2026-10-21).
What were IS Dongseo's latest annual revenue and operating profit?
For fiscal year 2025, IS Dongseo reported revenue of US$931.6M, operating profit of US$51.4M and a net loss of US$54.2M, per its annual report on DART (data retrieved from DART on 2026-09-08). Revenue was down 18.5% on the previous year.
Where does this data come from?
Financial statements and filings come from DART, Korea's official corporate-filing system. Share prices, market capitalisation and trading status come from KRX. Company summaries are AI-generated from the filings and may contain errors; financial figures are mapped directly from DART.
Data sources and last updated
- Filings and financial statements
- DART (dart.fss.or.kr), Korea's official corporate-filing system
- Prices, market cap, trading status
- KRX (Korea Exchange), via FinanceDataReader
- Latest annual financials
- Fiscal year 2025, data retrieved from DART on 2026-09-08
- Share price and market cap
- Close of 2026-10-21
- Currency
- US$, 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.
- Report on large shareholdings (5% rule) (standard)Oct 14
- Report on securities held by executives/major shareholdersOct 14
- Report on large shareholdings (5% rule) (standard)Oct 8
- Report on large shareholdings (5% rule) (abbreviated)Oct 2
- Supply contract signed
IS Dongseo won a US$254M construction contract (27.96% of recent revenue) from the Namsan 4-7 Redevelopment Project Association in Daegu for an 11-building, 944-unit residential redevelopment project, with payment on a pay-as-sold basis.
Supply contract · Oct 1 - Report on large shareholdings (5% rule) (standard)Sep 30
- Report on large shareholdings (5% rule) (standard)Sep 16
- [Amended] Investor relations (IR) meeting (notice)Sep 14
- Investor relations (IR) meeting (notice)Sep 14
- [Amended] Supply contract signed
IS Dongseo amended its contract for the Nam-gu B-14 district housing redevelopment project, raising the contract amount from US$329M to US$351M (49.82% of recent revenue) following a change-order contract.
Supply contract · Aug 31 - [Amended] Supply contract signed
IS Dongseo updated a previously disclosed supply contract with SK ecoplant, now worth US$61.2M, about 5.42% of its recent annual revenue, running through Aug 2026.
Supply contract · Aug 7 - Supply contract signed
IS Dongseo disclosed a supply contract with EDL Co., Ltd., worth US$77M, about 8.91% of its recent annual revenue, running through Feb 2028.
Supply contract · Aug 3 - [Amended] Supply contract signed
IS Dongseo amended its February 14, 2025 disclosure of a US$312M construction contract for the Nam-gu B-14 housing redevelopment project (46.7% of recent sales), setting the construction period as 2026-08-01 to 2029-10-31 following issuance of the construction commencement report certificate.
Supply contract · Jul 29 - Supply contract signed
IS Dongseo disclosed a supply contract with SK ecoplant, worth US$21.1M, about 2.54% of its recent annual revenue, running through Dec 2026.
Supply contract · Jul 14 - [Amended] Supply contract signed
IS Dongseo updated a previously disclosed supply contract with SK ecoplant, now worth US$58.8M, about 5.66% of its recent annual revenue, running through Aug 2026.
Supply contract · Jun 30 - Supply contract signed
IS Dongseo disclosed a supply contract with SK ecoplant, worth US$43.1M, about 5.15% of its recent annual revenue, running through Jun 2028.
Supply contract · May 11 - [Amended] Supply contract signed
IS Dongseo updated a previously disclosed supply contract with SK ecoplant, now worth US$60M, about 5.66% of its recent annual revenue, running through Jun 2026.
Supply contract · Mar 30 - Cash/in-kind dividend decision
IS Dongseo declared a cash dividend of US$0.34 per share, equal to about 2% of the recent share price.
Dividend · Mar 11 - [Amended] Supply contract signed
IS Dongseo updated a previously disclosed supply contract with SK ecoplant, now worth US$72.9M, about 7.01% of its recent annual revenue, running through Jul 2027.
Supply contract · Feb 11 - Change of 30% or more in revenue or profit/loss structure (15% for large companies)
IS Dongseo reported consolidated results for FY2025: revenue of US$844M (−18.5% year on year), operating profit of US$45M (−61.2% year on year) and a net loss of US$35.6M.
Earnings · Feb 9 - Operating results (consolidated) (preliminary) (fair disclosure)
IS Dongseo filed provisional (unaudited) consolidated results for Q4 2025: revenue of US$225M (+9.9% year on year), an operating loss of US$20.1M (from a profit a year earlier) and a net loss of US$40.3M.
Earnings · Feb 9 - [Amended] Supply contract signedSupply contract · Jan 28
- Supply contract terminatedSupply contract · Jan 27
- Completion report on merger, etc. (merger)M&A · Jan 6