Who has been buying Apton stock?

1 distinct insiders have filed 0 disclosed insider purchases in Apton (270520), most recently on 2026-05-20. 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 Apton have?

Apton has 0 buy-side and 1 sell-side disclosures on record, covering ₩42.3B ($29.4M) in total reported value, spanning 2024-04-19 to 2026-05-20.

Where does StockDrifts get Apton 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.

Apton 270520

Company

앱튼Apton

Insiders

Buys

Total Value

₩42.3B ($29.4M)

Avg Return

+85.33%

Last Filing

2026-05-20

Apton (270520) has 0 disclosed insider purchases and 1 disclosed disposals on record, filed by 1 distinct insiders. Together those filings cover ₩42.3B ($29.4M) in reported transaction value. The earliest filing StockDrifts holds for Apton is dated 2024-04-19; the most recent is 2026-05-20. 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 +85.33%, 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
2026-07-16	BUY	유상신주취득	에스디에스홀딩스 SDS Holdings	-	3.5M	₩2,900	+6.9%	₩3.5B ($2.4M)
2026-07-16	BUY	행사가액조정	에이프로젠 Aprogen	-	3.5M	₩2,900	+6.9%	₩10.1B ($7.0M)
2026-05-20	BUY	CB인수	에이프로젠 Aprogen	-	4.0M	₩1,322	+6.3%	₩5.3B ($3.7M)
2026-04-16	SELL	주식병합	김대진 Daejin Kim	vice president	-318.6K	₩228	-561.0%	₩73M ($50K)
2026-04-16	SELL	주식병합	에이프로젠 Aprogen	-	-55.9M	₩228	-561.0%	₩12.8B ($8.9M)
2025-05-27	BUY	제3자배정유상증자	에이프로젠 Aprogen	-	34.8M	₩1,150	-80.3%	₩40.0B ($27.8M)
2025-01-09	BUY	장외매수	에이프로젠 Aprogen	-	27.3M	₩1,547	-85.3%	₩42.3B ($29.4M)
2025-01-09	SELL	Market Sell	엔투텍 N2Tech	-	-27.3M	₩1,547	+85.3%	₩42.3B ($29.4M)
2024-09-20	BUY	신규선임	김정민 Kim Jeong-min	Internal director	699.8K	₩1,244	-81.8%	₩871M ($605K)
2024-08-07	BUY	전환사채의권리행사	엔투텍 N2Tech	-	10.7M	₩1,520	-85.1%	₩16.2B ($11.3M)
2024-08-07	BUY	장외매수	엔투텍 N2Tech	-	3.4M	₩1,520	-85.1%	₩5.2B ($3.6M)
2024-08-07	SELL	장외매도	리튬코리아 Lithium Korea	-	-341.8K	₩1,520	+85.1%	₩520M ($361K)
2024-08-07	SELL	장외매도	리튬코리아 Lithium Korea	-	-3.4M	₩1,520	+85.1%	₩5.2B ($3.6M)
2024-08-07	SELL	전환등	엔투텍 N2Tech	-	-10.7M	₩1,520	+85.1%	₩16.2B ($11.3M)
2024-04-19	SELL	전환등	유재훈 Jaehoon Yoo	CEO	-140.0K	₩2,150	+89.4%	₩301M ($209K)
2024-04-19	BUY	전환사채의권리행사	백상준 Sangjun Baek	Internal director	174.9K	₩2,150	-89.4%	₩376M ($261K)
2024-04-19	BUY	전환사채의권리행사	유재훈 Jaehoon Yoo	CEO	140.0K	₩2,150	-89.4%	₩301M ($209K)
2024-04-19	SELL	전환등	김대진 Daejin Kim	CEO	-279.9K	₩2,150	+89.4%	₩602M ($418K)
2024-04-19	BUY	전환사채의권리행사	김대진 Daejin Kim	CEO	279.9K	₩2,150	-89.4%	₩602M ($418K)
2024-04-19	SELL	전환등	백상준 Sangjun Baek	Internal director	-174.9K	₩2,150	+89.4%	₩376M ($261K)

Frequently asked questions

Who has been buying Apton stock?: 1 distinct insiders have filed 0 disclosed insider purchases in Apton (270520), most recently on 2026-05-20. 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 Apton have?: Apton has 0 buy-side and 1 sell-side disclosures on record, covering ₩42.3B ($29.4M) in total reported value, spanning 2024-04-19 to 2026-05-20.
Where does StockDrifts get Apton 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 Apton. For how StockDrifts scores these disclosures, see the Korea insider signal tier research, or browse every Korean stock we track.