Who has been buying Construction Tech stock?

2 distinct insiders have filed 10 disclosed insider purchases in Construction Tech (020710), most recently on 2025-12-17. 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 Construction Tech have?

Construction Tech has 10 buy-side and 2 sell-side disclosures on record, covering ₩308M ($214K) in total reported value, spanning 2024-06-14 to 2025-12-17.

Do insider buys in Korean stocks predict returns?

Not uniformly. StockDrifts analysed 170,720 share-count changes across 56,930 Korean regulatory filings using cross-sectional alpha at fixed forward horizons, and found returns concentrated in particular signal tiers rather than in insider buying generally.

Construction Tech 020710

Company

시공테크Construction Tech

Insiders

Buys

Total Value

₩308M ($214K)

Avg Return

+8.14%

Last Filing

2025-12-17

Construction Tech (020710) has 10 disclosed insider purchases and 2 disclosed disposals on record, filed by 2 distinct insiders. Together those filings cover ₩308M ($214K) in reported transaction value. The earliest filing StockDrifts holds for Construction Tech is dated 2024-06-14; the most recent is 2025-12-17. Across these filings the average return since disclosure is +8.14%, 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
2025-12-17	BUY	Market Buy	김승태 Seungtae Kim	CEO	10.3K	₩4,225	-1.9%	₩44M ($30K)
2025-12-17	BUY	Market Buy	김승태 Seungtae Kim	CEO	1.7K	₩4,225	-1.9%	₩7M ($5K)
2025-12-16	BUY	Market Buy	남경우 Nam Kyeong-woo	vice president	1.1K	₩4,225	-1.9%	₩5M ($3K)
2025-12-16	BUY	Market Buy	남경우 Nam Kyeong-woo	vice president	2.5K	₩4,225	-1.9%	₩11M ($7K)
2025-12-15	BUY	Market Buy	남경우 Nam Kyeong-woo	vice president	830	₩4,280	-3.1%	₩4M ($2K)
2025-12-15	BUY	Market Buy	남경우 Nam Kyeong-woo	vice president	1.3K	₩4,280	-3.1%	₩6M ($4K)
2025-12-15	BUY	Market Buy	남경우 Nam Kyeong-woo	vice president	1.4K	₩4,280	-3.1%	₩6M ($4K)
2025-08-11	BUY	수증	박대민 Daemin Park	CSO	3.6M	₩3,960	+4.7%	₩14.3B ($9.9M)
2025-08-11	SELL	증여	박기석 Park Ki-seok	Chairman of the Board	-3.6M	₩3,960	-4.7%	₩14.3B ($9.9M)
2025-06-12	SELL	수증취소	박대민 Daemin Park	CSO	-3.6M	₩4,005	-3.5%	₩14.5B ($10.0M)
2025-06-11	BUY	증여취소	박기석 Park Ki-seok	Chairman of the Board	3.6M	₩3,975	+4.3%	₩14.3B ($10.0M)
2025-04-21	SELL	Market Sell	김승태 Seungtae Kim	CEO	-11.7K	₩9,860	+58.0%	₩115M ($80K)
2025-04-21	SELL	Market Sell	남경우 Nam Kyeong-woo	vice president	-10.1K	₩9,860	+58.0%	₩100M ($69K)
2025-03-14	SELL	증여	박기석 Park Ki-seok	Chairman of the Board	-3.6M	₩3,930	-5.5%	₩14.2B ($9.9M)
2025-03-14	BUY	수증	박대민 Daemin Park	CSO	3.6M	₩3,930	+5.5%	₩14.2B ($9.9M)
2024-06-17	BUY	Market Buy	남경우 Nam Kyeong-woo	vice president	500	₩4,160	-0.4%	₩2M ($1K)
2024-06-17	BUY	Market Buy	남경우 Nam Kyeong-woo	vice president	670	₩4,160	-0.4%	₩3M ($2K)
2024-06-14	BUY	Market Buy	남경우 Nam Kyeong-woo	vice president	1.9K	₩4,165	-0.5%	₩8M ($6K)

Frequently asked questions

Who has been buying Construction Tech stock?: 2 distinct insiders have filed 10 disclosed insider purchases in Construction Tech (020710), most recently on 2025-12-17. 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 Construction Tech have?: Construction Tech has 10 buy-side and 2 sell-side disclosures on record, covering ₩308M ($214K) in total reported value, spanning 2024-06-14 to 2025-12-17.
Do insider buys in Korean stocks predict returns?: Not uniformly. StockDrifts analysed 170,720 share-count changes across 56,930 Korean regulatory filings using cross-sectional alpha at fixed forward horizons, and found returns concentrated in particular signal tiers rather than in insider buying generally.

More on this data

Every trade listed above comes from an official regulatory disclosure. For how StockDrifts scores these disclosures, see the Korea insider signal tier research, or browse every Korean stock we track.