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178320 - Seojin System Co., Ltd.

178320 Summary
Power Equipment
Stock Price & Overview
₩33,650 +450 (+1.36%) Close · Sep 4, 2026 KST
KOSDAQ | ₩KRW | Close: ₩33,650  ≈ US$24  ·  Market cap ₩2.1tn (≈ $1.5bn)
Why this page exists. Korean issuers file to DART, not the SEC, and almost nothing is published in English. Titles here are translated; where kstock has read the filing, the row carries the explanation and the amount in won and dollars. How we pick »

178320 DART Filings

DART

Securities issuance result (voluntary)

Filing09/04/26title translated
DART

Securities issuance result (voluntary)

Filing09/04/26title translated
DART

Securities issuance result (voluntary)

Filing09/01/26title translated
DART

Securities issuance result (voluntary)

Filing09/01/26title translated
DART

Material event report (debt securities treated as capital) ×2

Filing09/01/26title translated
DART

Material event report (convertible bond issuance) ×2

Filing09/01/26title translated
DART

Share pledge that could change the largest shareholder

Filing08/31/26title translated
DART

Material event report (convertible bond issuance) ×4

Filing08/24/26title translated
DART

Material event report (debt securities treated as capital) ×2

Filing08/24/26title translated
DART

Debt guarantee for a third party ×2

Filing08/18/26title translated
DART

Half-Year Report

Periodic08/14/26title translated
DART

Debt guarantee for a third party

Filing08/13/26title translated
DART

Debt guarantee for a third party

Filing08/12/26title translated
DART

Share pledge that could change the largest shareholder

Filing08/07/26title translated
DART

Single Supply Contract Signed

Contract08/07/26title translated
DART

Debt guarantee for a third party

Filing08/05/26title translated
DART

Debt guarantee for a third party

Filing08/04/26title translated
DART

Share pledge that could change the largest shareholder

Filing08/03/26title translated
DART

Single Supply Contract Signed

Contract07/15/26title translated
DART

Share pledge that could change the largest shareholder

Filing07/13/26title translated
DART

Share pledge that could change the largest shareholder

Filing07/10/26title translated
DART

Trading plan report by an officer or major shareholder

Filing07/10/26title translated
DART

Single Supply Contract Signed

Contract07/08/26title translated
DART

Single Supply Contract Signed

Contract07/01/26title translated
DART

Quarterly Report

Periodic06/25/26title translated
DART

Share pledge that could change the largest shareholder — released or cancelled

Filing06/12/26title translated
DART

Share pledge that could change the largest shareholder

Filing06/05/26title translated
DART

Share pledge that could change the largest shareholder

Filing06/02/26title translated
DART

Share pledge that could change the largest shareholder

Filing05/29/26title translated
DART

Share pledge that could change the largest shareholder

Filing05/21/26title translated
DART

Single Supply Contract Signed

Contract05/18/26title translated
DART

Quarterly Report

Periodic05/15/26title translated
DART

Trading plan report by an officer or major shareholder

Filing05/12/26title translated
12 routine filings (insider holdings reports, IR schedules)DART

5% Ownership Report — Large Holdings

Ownership08/07/26title translated
DART

5% Ownership Report — Large Holdings

Ownership07/16/26title translated
DART

5% Ownership Report — Large Holdings

Ownership07/10/26title translated
DART

Insider / Major Shareholder Holdings Report

Ownership07/10/26title translated
DART

5% Ownership Report — Large Holdings

Ownership06/29/26title translated
DART

5% Ownership Report — Short Form ×2

Ownership06/18/26title translated
DART

5% Ownership Report — Large Holdings

Ownership06/12/26title translated
DART

5% Ownership Report — Large Holdings

Ownership06/02/26title translated
DART

5% Ownership Report — Large Holdings

Ownership05/22/26title translated
DART

Insider / Major Shareholder Holdings Report ×6

Ownership05/08/26title translated
DART

5% Ownership Report — Large Holdings

Ownership05/08/26title translated
DART

5% Ownership Report — Short Form

Ownership05/08/26title translated
45 filings on file, grouped where one event produced many. Source: DART, operated by Korea's Financial Supervisory Service.

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What a US investor should know

  • Trading hours09:00–15:30 KST — 20:00–02:30 US Eastern the night before.
  • Daily limitKorean stocks can move at most ±30% in a session before trading halts.
  • Getting exposureKRX shares are not directly tradable in most US brokerage accounts. The usual routes are Korea ETFs or an international account.
  • ReportingKorean issuers file to DART, not the SEC. Half-year and quarterly reports land about 45 days after period end.