Who has been buying CMTX stock?

0 distinct insiders have filed 0 disclosed insider purchases in CMTX (388210), most recently on 2026-04-17. 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 CMTX have?

CMTX has 0 buy-side and 0 sell-side disclosures on record, spanning 2025-11-20 to 2026-04-17.

Where does StockDrifts get CMTX 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.

CMTX 388210

Company

씨엠티엑스CMTX

Insiders

Buys

Total Value

—

Avg Return

—

Last Filing

2026-04-17

CMTX (388210) has 0 disclosed insider purchases and 0 disclosed disposals on record, filed by 0 distinct insiders. The earliest filing StockDrifts holds for CMTX is dated 2025-11-20; the most recent is 2026-04-17. 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
2026-04-17	BUY	PROGRAM	허정수 Heo Jeong-su	Managing Director	2.5K	₩162,500	-10.7%	₩406M ($282K)
2026-04-17	BUY	PROGRAM	김경무 Kyungmoo Kim	Managing Director	625	₩162,500	-10.7%	₩102M ($71K)
2026-04-17	BUY	PROGRAM	김경무 Kyungmoo Kim	Managing Director	375	₩162,500	-10.7%	₩61M ($42K)
2026-04-17	BUY	PROGRAM	장민기 Minki Jang	Managing Director	15.0K	₩162,500	-10.7%	₩2.4B ($1.7M)
2026-04-17	BUY	PROGRAM	송인광 Song In-gwang	Managing Director	2.5K	₩162,500	-10.7%	₩406M ($282K)
2026-04-17	BUY	PROGRAM	박종화 Jonghwa Park	CEO	2.5K	₩162,500	-10.7%	₩406M ($282K)
2026-04-17	BUY	PROGRAM	박종화 Jonghwa Park	CEO	2.5K	₩162,500	-10.7%	₩406M ($282K)
2026-04-17	BUY	PROGRAM	김영근 Younggeun Kim	Managing Director	12.5K	₩162,500	-10.7%	₩2.0B ($1.4M)
2026-01-20	BUY	주식매수선택권	박종화 Jonghwa Park	CEO	12.5K	₩115,200	+29.3%	₩1.4B ($1.0M)
2026-01-20	BUY	주식매수선택권	박종화 Jonghwa Park	CEO	17.5K	₩115,200	+29.3%	₩2.0B ($1.4M)
2026-01-20	BUY	PROGRAM	김경무 Kyungmoo Kim	Managing Director	13.8K	₩115,200	+25.9%	₩1.6B ($1.1M)
2026-01-20	BUY	PROGRAM	김경무 Kyungmoo Kim	Managing Director	4.4K	₩115,200	+25.9%	₩504M ($350K)
2026-01-20	BUY	PROGRAM	김경무 Kyungmoo Kim	Managing Director	1.9K	₩115,200	+25.9%	₩216M ($150K)
2026-01-20	BUY	PROGRAM	김영근 Younggeun Kim	Managing Director	6.3K	₩115,200	+25.9%	₩720M ($500K)
2026-01-20	BUY	PROGRAM	김영근 Younggeun Kim	Managing Director	87.5K	₩115,200	+25.9%	₩10.1B ($7.0M)
2025-11-20	BUY	신규상장	코리아반도체소부장제1호사모투자 Korea Semiconductor Department Head No. 1 Private Equity Investment	-	1.3M	₩131,600	+13.2%	₩172.7B ($119.9M)
2025-11-20	BUY	신규상장	박성훈 Seonghoon Park	CEO	2.8M	₩131,600	+13.2%	₩373.0B ($259.1M)

Frequently asked questions

Who has been buying CMTX stock?: 0 distinct insiders have filed 0 disclosed insider purchases in CMTX (388210), most recently on 2026-04-17. 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 CMTX have?: CMTX has 0 buy-side and 0 sell-side disclosures on record, spanning 2025-11-20 to 2026-04-17.
Where does StockDrifts get CMTX 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 CMTX. For how StockDrifts scores these disclosures, see the Korea insider signal tier research, or browse every Korean stock we track.