Seojin System
Daily close in US$ at the latest USD/KRW close. Source: KRX via FinanceDataReader.
Seojin System is listed on KOSDAQ and classified under Industrials, Electrical Equipment. Its market value is US$1.2B. In FY2025 it reported revenue of US$804.8M and operating profit of US$864.8K.
A written company profile is not available yet; the facts above come from exchange and DART data.
Seojin System in five facts
Where is Seojin System listed and in which sector?
Seojin System (Korean name: 서진시스템) trades under KRX code 178320 on KOSDAQ, the Korea Exchange's board for smaller and growth companies. It is classified in the Industrials sector, Electrical Equipment.
How large is Seojin System?
Its market capitalisation was US$1.2B on 2026-10-21, which puts it in this site's small-cap group. US$ amounts are converted from won at 1 USD ≈ ₩1,325 (2026-10-21).
What were Seojin System's latest annual revenue and operating profit?
For fiscal year 2025, Seojin System reported revenue of US$804.8M, operating profit of US$864.8K and a net loss of US$77.3M, per its annual report on DART (data retrieved from DART on 2026-10-02). Revenue was down 12.2% on the previous year.
Where does this data come from?
Financial statements and filings come from DART, Korea's official corporate-filing system. Share prices, market capitalisation and trading status come from KRX. Company summaries are AI-generated from the filings and may contain errors; financial figures are mapped directly from DART.
Data sources and last updated
- Filings and financial statements
- DART (dart.fss.or.kr), Korea's official corporate-filing system
- Prices, market cap, trading status
- KRX (Korea Exchange), via FinanceDataReader
- Latest annual financials
- Fiscal year 2025, data retrieved from DART on 2026-10-02
- Share price and market cap
- Close of 2026-10-21
- Currency
- US$, 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.
- [Amended] Decision to guarantee a third party's debtOct 19
- [Amended] Decision to guarantee a third party's debtOct 19
- Report on large shareholdings (5% rule) (standard)Oct 16
- [Amended] Share-pledge agreement that may change the largest shareholder
Seojin System's largest shareholder (an individual) pledged shares as loan collateral, securing up to US$189M.
Ownership change · Oct 12 · 8 versions - Supply contract signed (voluntary)
Seojin System disclosed a supply contract with Bloom Energy Corporation, worth US$79.4M, about 9.98% of its recent annual revenue, running through Dec 2027.
Supply contract · Oct 12 - Report on large shareholdings (5% rule) (abbreviated)Oct 7
- [Amended] Decision to guarantee a third party's debtOct 2
- Other management matter (voluntary) (subsidiary)Sep 30
- Report on large shareholdings (5% rule) (standard)Sep 23
- Report on large shareholdings (5% rule) (standard)Sep 21
- [Amended] Decision to guarantee a third party's debtSep 18
- [Amended] Decision to guarantee a third party's debtSep 18
- Report on large shareholdings (5% rule) (standard)Sep 7
- Securities issuance results (voluntary)Sep 4
- Securities issuance results (voluntary)Sep 4
- Securities issuance results (voluntary)Sep 1
- Securities issuance results (voluntary)Sep 1
- [Amended] Material event reportSep 1
- [Amended] Material event report (convertible bonds)
Seojin System updated the terms of convertible bonds to raise US$45.5M, about 3.9% of its market value.
Capital raise · Sep 1 - [Amended] Material event reportSep 1
- [Amended] Material event report (convertible bonds)
Seojin System updated the terms of convertible bonds to raise US$27.3M, about 2.3% of its market value.
Capital raise · Sep 1 - Material event report (convertible bonds)
Seojin System disclosed convertible bonds to raise US$23.5M, about 2.0% of its market value.
Capital raise · Aug 24 - Material event report (convertible bonds)
Seojin System disclosed convertible bonds to raise US$48.9M, about 4.2% of its market value.
Capital raise · Aug 24 - Material event report (convertible bonds)
Seojin System disclosed convertible bonds to raise US$45.3M, about 3.9% of its market value.
Capital raise · Aug 24 - Material event report (convertible bonds)
Seojin System disclosed convertible bonds to raise US$27.2M, about 2.3% of its market value.
Capital raise · Aug 24 - [Amended] Supply contract signed
Seojin System updated a previously disclosed supply contract with Ace Engineering Co., Ltd., now worth US$130M, about 15.27% of its recent annual revenue, running through Apr 2027.
Supply contract · Aug 7 - Supply contract signed (voluntary)
Seojin System disclosed a supply contract with Bloom Energy Corporation, worth US$52.9M, about 7.37% of its recent annual revenue, running through Mar 2027.
Supply contract · Jul 15 - Supply contract signed (voluntary)
Seojin System disclosed a supply contract with Ace Engineering Co., Ltd., worth US$35.7M, about 5.04% of its recent annual revenue, running through Dec 2026.
Supply contract · Jul 8 - Supply contract signed (voluntary)
Seojin System disclosed a supply contract with Ace Engineering Co., Ltd., worth US$46.9M, about 6.83% of its recent annual revenue, running through Dec 2027.
Supply contract · Jul 1 - Share-pledge agreement tied to the largest shareholder terminated/cancelled
A previously disclosed share pledge on Seojin System's largest shareholder (an individual) was released or cancelled, freeing collateral of US$50.9M.
Ownership change · Jun 12 - [Amended] Share-pledge agreement that may change the largest shareholder
Seojin System's largest shareholder (an individual) pledged shares as loan collateral, securing up to US$134M.
Ownership change · Jun 5 - [Amended] Share-pledge agreement that may change the largest shareholder
Seojin System's largest shareholder (an individual) pledged shares as loan collateral, securing up to US$117M.
Ownership change · Jun 2 - [Amended] Share-pledge agreement that may change the largest shareholder
Seojin System's largest shareholder (an individual) pledged shares as loan collateral, securing up to US$119M.
Ownership change · May 29 - [Amended] Share-pledge agreement that may change the largest shareholder
Seojin System's largest shareholder (an individual) pledged shares as loan collateral, securing up to US$118M.
Ownership change · May 21 - Supply contract signed
Seojin System disclosed a supply contract with Ace Engineering Co., Ltd., worth US$125M, about 17.54% of its recent annual revenue, running through Dec 2027.
Supply contract · May 18 - [Amended] Share-pledge agreement that may change the largest shareholder
Seojin System's largest shareholder (an individual) pledged shares as loan collateral, securing up to US$173M.
Ownership change · May 4 - Securities issuance results (voluntary) (third-party placement)Capital raise · Apr 30
- Supply contract signed
Seojin System disclosed a supply contract with Ace Engineering Co., Ltd., worth US$82M, about 11.31% of its recent annual revenue, running through Jan 2027.
Supply contract · Apr 28 - Material event report (rights offering)
Seojin System disclosed a private placement (third-party allotment) to raise US$122M, about 11.2% of its market value.
Capital raise · Apr 22 - [Amended] Share-pledge agreement that may change the largest shareholder
Seojin System's largest shareholder (an individual) pledged shares as loan collateral, securing up to US$185M.
Ownership change · Apr 20