Who has been buying SeAH Mechanics stock?

7 distinct insiders have filed 26 disclosed insider purchases in SeAH Mechanics (396300), most recently on 2026-07-09. 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 SeAH Mechanics have?

SeAH Mechanics has 26 buy-side and 0 sell-side disclosures on record, covering ₩329M ($228K) in total reported value, spanning 2024-08-07 to 2026-07-09.

Where does StockDrifts get SeAH Mechanics 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.

SeAH Mechanics 396300

Company

세아메카닉스SeAH Mechanics

Insiders

Buys

Total Value

₩329M ($228K)

Avg Return

+40.50%

Last Filing

2026-07-09

SeAH Mechanics (396300) has 26 disclosed insider purchases and 0 disclosed disposals on record, filed by 7 distinct insiders. Together those filings cover ₩329M ($228K) in reported transaction value. The earliest filing StockDrifts holds for SeAH Mechanics is dated 2024-08-07; the most recent is 2026-07-09. 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 +40.50%, measured from each filing date to the latest available close.

Price & insider activity (12 months)

Recent insider trades

Date	Type	Source	Insider	Position	Shares	Price at filing	Return	Value
2026-07-09	BUY	Market Buy	이영식 Youngsik Lee	Managing Director	4.5K	₩2,885	+3.1%	₩13M ($9K)
2026-06-23	BUY	Market Buy	조창현 Cho Changhyun	Internal director	7.4K	₩3,475	-8.8%	₩26M ($18K)
2026-04-23	BUY	Market Buy	홍지만 Hong Ji-man	Managing Director	2.5K	₩4,205	+26.5%	₩11M ($7K)
2026-04-07	BUY	Market Buy	조창현 Cho Changhyun	Internal director	7.2K	₩3,730	+12.6%	₩27M ($19K)
2026-04-06	BUY	Market Buy	조창현 Cho Changhyun	Internal director	19.3K	₩3,570	+17.6%	₩69M ($48K)
2026-02-12	BUY	Market Buy	이진수 binary number	Managing Director	1.0K	₩4,470	-7.3%	₩4M ($3K)
2026-02-05	BUY	Market Buy	진성우 Seongwoo Jin	Managing Director	700	₩4,840	-14.4%	₩3M ($2K)
2026-01-30	BUY	Market Buy	조창현 Cho Changhyun	-	1.0K	₩4,535	-8.6%	₩5M ($3K)
2026-01-29	BUY	Market Buy	조창현 Cho Changhyun	-	10.0K	₩4,010	+3.4%	₩40M ($28K)
2026-01-16	BUY	Market Buy	조창현 Cho Changhyun	-	26.9K	₩2,595	+59.7%	₩70M ($48K)
2026-01-15	BUY	Market Buy	조창현 Cho Changhyun	-	2.1K	₩2,550	+62.5%	₩5M ($4K)
2026-01-14	BUY	Market Buy	조창현 Cho Changhyun	-	5.5K	₩2,510	+65.1%	₩14M ($10K)
2025-12-23	BUY	Market Buy	박태원 Taewon Park	Outside Director	161	₩2,450	+69.2%	₩394K ($274)
2025-12-23	BUY	Market Buy	박태원 Taewon Park	Outside Director	458	₩2,450	+69.2%	₩1M ($779)
2025-12-23	BUY	Market Buy	박태원 Taewon Park	Outside Director	4.4K	₩2,450	+69.2%	₩11M ($7K)
2025-06-24	BUY	Market Buy	박태원 Taewon Park	Outside Director	6	₩3,205	+29.3%	₩19K ($13)
2025-06-24	BUY	Market Buy	박태원 Taewon Park	Outside Director	2.8K	₩3,205	+29.3%	₩9M ($6K)
2025-06-20	BUY	Market Buy	박태원 Taewon Park	Outside Director	4	₩2,845	+45.7%	₩11K ($8)
2025-05-23	BUY	Market Buy	이진수 binary number	Managing Director	2.1K	₩2,370	+74.9%	₩5M ($3K)
2025-05-23	BUY	Market Buy	이진수 binary number	Managing Director	415	₩2,370	+74.9%	₩984K ($683)
2025-04-28	BUY	Market Buy	박태원 Taewon Park	Outside Director	2.2K	₩2,240	+85.0%	₩5M ($3K)
2025-04-28	BUY	Market Buy	박태원 Taewon Park	Outside Director	3	₩2,240	+85.0%	₩7K ($5)
2024-08-07	BUY	기타	김동주 Kim Dong-ju	Managing Director	6.3K	₩2,720	+52.4%	₩17M ($12K)
2024-08-07	BUY	Market Buy	김동주 Kim Dong-ju	Managing Director	623	₩2,720	+52.4%	₩2M ($1K)
2024-08-07	BUY	Market Buy	김동주 Kim Dong-ju	Managing Director	885	₩2,720	+52.4%	₩2M ($2K)
2024-08-07	BUY	Market Buy	김동주 Kim Dong-ju	Managing Director	119	₩2,720	+52.4%	₩324K ($225)
2024-08-07	BUY	Market Buy	김동주 Kim Dong-ju	Managing Director	2.1K	₩2,720	+52.4%	₩6M ($4K)

Frequently asked questions

Who has been buying SeAH Mechanics stock?: 7 distinct insiders have filed 26 disclosed insider purchases in SeAH Mechanics (396300), most recently on 2026-07-09. 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 SeAH Mechanics have?: SeAH Mechanics has 26 buy-side and 0 sell-side disclosures on record, covering ₩329M ($228K) in total reported value, spanning 2024-08-07 to 2026-07-09.
Where does StockDrifts get SeAH Mechanics 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 SeAH Mechanics. For how StockDrifts scores these disclosures, see the Korea insider signal tier research, or browse every Korean stock we track.