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J&TC 204270

Company
제이앤티씨J&TC
Insiders
3
Buys
9
Total Value
₩1.2B ($855K)
Avg Return
+58.31%
Last Filing
2025-04-14

J&TC (204270) has 9 disclosed insider purchases and 1 disclosed disposals on record, filed by 3 distinct insiders. Together those filings cover ₩1.2B ($855K) in reported transaction value. The earliest filing StockDrifts holds for J&TC is dated 2024-02-13; the most recent is 2025-04-14. All of it is parsed from DART D001/D002 insider disclosures, the official disclosure system operated by the Financial Supervisory Service (Korea). Across these filings the average return since disclosure is +58.31%, measured from each filing date to the latest available close.

Price & insider activity (12 months)

Recent insider trades

DateTypeSourceInsiderPositionSharesPrice at filingReturnValue
2025-04-14BUYMarket Buy
장상욱
Sangwook Jang
Internal director1.3K₩14,770+60.5%₩19M ($13K)
2025-04-11BUYMarket Buy
장상욱
Sangwook Jang
Internal director10.7K₩14,570+62.7%₩156M ($108K)
2025-04-09BUYMarket Buy
장상욱
Sangwook Jang
Internal director7.7K₩12,450+90.4%₩95M ($66K)
2025-04-09BUYMarket Buy
장윤정
Jang Yoon-jeong
CEO2.7K₩12,450+90.4%₩34M ($24K)
2025-04-09BUYMarket Buy
장상욱
Sangwook Jang
Internal director12.9K₩12,450+90.4%₩161M ($112K)
2025-04-08BUYMarket Buy
장윤정
Jang Yoon-jeong
CEO12.9K₩12,750+85.9%₩164M ($114K)
2025-04-08BUYMarket Buy
장상욱
Sangwook Jang
Internal director15.1K₩12,750+85.9%₩193M ($134K)
2025-04-03BUYMarket Buy
장윤정
Jang Yoon-jeong
CEO16.9K₩14,450+64.0%₩245M ($170K)
2025-04-02BUYMarket Buy
장윤정
Jang Yoon-jeong
CEO3.1K₩15,100+57.0%₩47M ($33K)
2024-02-13SELLMarket Sell
김윤택
Yuntaek Kim
CEO-10.0K₩11,630-103.8%₩116M ($81K)

Frequently asked questions

Who has been buying J&TC stock?
3 distinct insiders have filed 9 disclosed insider purchases in J&TC (204270), most recently on 2025-04-14. Each filer, their role, the number of shares and the price at filing are listed in the table on this page.
How many insider filings does J&TC have?
J&TC has 9 buy-side and 1 sell-side disclosures on record, covering ₩1.2B ($855K) in total reported value, spanning 2024-02-13 to 2025-04-14.
Where does StockDrifts get J&TC insider data?
From DART D001/D002 insider disclosures — the official filing system run by the Financial Supervisory Service (Korea). StockDrifts parses each disclosure and matches it to daily price history; the original filings remain available directly from DART.
Do insider buys in Korean stocks predict returns?
Not uniformly. StockDrifts analysed 170,720 share-count changes across 56,930 Korean DART filings using cross-sectional alpha at fixed forward horizons, and found returns concentrated in particular signal tiers rather than in insider buying generally.

Source filings

Every trade listed above is disclosed in DART D001/D002 insider disclosures, filed with the Financial Supervisory Service (Korea). View the original DART filings for J&TC. For how StockDrifts scores these disclosures, see the Korea insider signal tier research, or browse every Korean stock we track.