Who has been buying Now Course stock?

1 distinct insiders have filed 12 disclosed insider purchases in Now Course (257990), most recently on 2026-05-18. 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 Now Course have?

Now Course has 12 buy-side and 0 sell-side disclosures on record, spanning 2024-08-23 to 2026-05-18.

Where does StockDrifts get Now Course 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.

Now Course 257990

Company

나우코스Now Course

Insiders

Buys

Total Value

—

Avg Return

—

Last Filing

2026-05-18

Now Course (257990) has 12 disclosed insider purchases and 0 disclosed disposals on record, filed by 1 distinct insiders. The earliest filing StockDrifts holds for Now Course is dated 2024-08-23; the most recent is 2026-05-18. All of it is parsed from DART D001/D002 insider disclosures, the official disclosure system operated by the Financial Supervisory Service (Korea).

Price & insider activity (12 months)

Recent insider trades

Date	Type	Source	Insider	Position	Shares	Price at filing	Return	Value
2026-05-18	BUY	교환	아스테리온홀딩스 Asterion Holdings	-	158.5K	₩8,200	+0.0%	₩1.3B ($903K)
2026-03-18	BUY	Market Buy	아스테리온홀딩스 Asterion Holdings	-	2.1K	-	-	-
2026-03-17	BUY	Market Buy	아스테리온홀딩스 Asterion Holdings	-	15	-	-	-
2026-03-13	BUY	Market Buy	아스테리온홀딩스 Asterion Holdings	-	25	-	-	-
2026-03-12	BUY	Market Buy	아스테리온홀딩스 Asterion Holdings	-	59	-	-	-
2026-03-11	BUY	Market Buy	아스테리온홀딩스 Asterion Holdings	-	23.5K	-	-	-
2026-03-10	BUY	Market Buy	아스테리온홀딩스 Asterion Holdings	-	1.5K	-	-	-
2026-03-09	BUY	Market Buy	아스테리온홀딩스 Asterion Holdings	-	9.3K	-	-	-
2026-03-06	BUY	Market Buy	아스테리온홀딩스 Asterion Holdings	-	7.5K	-	-	-
2026-03-05	BUY	Market Buy	아스테리온홀딩스 Asterion Holdings	-	782	-	-	-
2026-03-04	BUY	Market Buy	아스테리온홀딩스 Asterion Holdings	-	30.5K	-	-	-
2026-02-27	BUY	Market Buy	아스테리온홀딩스 Asterion Holdings	-	4.8K	-	-	-
2026-02-26	BUY	Market Buy	아스테리온홀딩스 Asterion Holdings	-	51.3K	-	-	-
2026-02-23	BUY	공개매수	아스테리온홀딩스 Asterion Holdings	-	1.5M	₩8,180	+1.5%	₩12.2B ($8.4M)
2024-08-23	BUY	장외매수	아스테리온홀딩스 Asterion Holdings	-	145.0K	₩5,080	+63.4%	₩737M ($512K)
2024-08-23	BUY	장외매수	아스테리온홀딩스 Asterion Holdings	-	137.7K	₩5,080	+63.4%	₩699M ($486K)
2024-08-23	BUY	장외매수	아스테리온홀딩스 Asterion Holdings	-	12.5K	₩5,080	+63.4%	₩64M ($44K)
2024-08-23	BUY	장외매수	아스테리온홀딩스 Asterion Holdings	-	6.7K	₩5,080	+63.4%	₩34M ($24K)
2024-08-23	BUY	장외매수	아스테리온홀딩스 Asterion Holdings	-	220.7K	₩5,080	+63.4%	₩1.1B ($779K)
2024-08-23	BUY	장외매수	아스테리온홀딩스 Asterion Holdings	-	4.5K	₩5,080	+63.4%	₩23M ($16K)

Frequently asked questions

Who has been buying Now Course stock?: 1 distinct insiders have filed 12 disclosed insider purchases in Now Course (257990), most recently on 2026-05-18. 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 Now Course have?: Now Course has 12 buy-side and 0 sell-side disclosures on record, spanning 2024-08-23 to 2026-05-18.
Where does StockDrifts get Now Course 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 Now Course. For how StockDrifts scores these disclosures, see the Korea insider signal tier research, or browse every Korean stock we track.