Who has been buying TEMC stock?

4 distinct insiders have filed 24 disclosed insider purchases in TEMC (425040), most recently on 2026-06-04. 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 TEMC have?

TEMC has 24 buy-side and 30 sell-side disclosures on record, covering ₩11.4B ($7.9M) in total reported value, spanning 2024-01-02 to 2026-06-04.

Where does StockDrifts get TEMC 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.

TEMC 425040

Company

티이엠씨TEMC

Insiders

Buys

Total Value

₩11.4B ($7.9M)

Avg Return

+14.07%

Last Filing

2026-06-04

TEMC (425040) has 24 disclosed insider purchases and 30 disclosed disposals on record, filed by 4 distinct insiders. Together those filings cover ₩11.4B ($7.9M) in reported transaction value. The earliest filing StockDrifts holds for TEMC is dated 2024-01-02; the most recent is 2026-06-04. 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 +14.07%, 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
2026-06-04	BUY	시간외매매	유원양 Yuwonyang	CEO	30.0K	₩20,250	-10.0%	₩608M ($422K)
2026-04-30	BUY	주식매수청구권 행사	전상훈 Jeon Sang-hoon	vice president	17.4K	₩17,160	+29.4%	₩299M ($207K)
2026-04-30	BUY	주식매수선택권	최찬규 Choi Chan-gyu	Managing Director	3.0K	₩17,160	+29.4%	₩51M ($36K)
2026-04-30	BUY	주식매수선택권	송창근 Song Chang-geun	Managing Director	9.0K	₩17,160	+29.4%	₩154M ($107K)
2026-04-30	BUY	주식매수선택권	김성곤 Kim Seong-gon	vice president	4.5K	₩17,160	+29.4%	₩77M ($54K)
2026-04-24	BUY	Market Buy	오승우 Seungwoo Oh	Center Director	7.6K	₩12,570	+36.5%	₩95M ($66K)
2026-03-03	BUY	PROGRAM	최찬규 Choi Chan-gyu	Managing Director	6.0K	-	-	-
2026-02-26	BUY	PROGRAM	여동일 Yeo Dong-il	Center Director	1.2K	-	-	-
2026-02-26	BUY	PROGRAM	김대현 Daehyun Kim	Vice President/COO	1.6K	-	-	-
2026-02-26	BUY	자사주상여금	전상훈 Jeon Sang-hoon	vice president	2.3K	-	-	-
2026-02-26	BUY	PROGRAM	최은광 Eunkwang Choi	Vice President/COO	2.0K	-	-	-
2026-02-26	BUY	PROGRAM	김성곤 Kim Seong-gon	vice president	585	-	-	-
2026-02-26	BUY	PROGRAM	김준규 Kim Jun-gyu	Center Director	1.3K	-	-	-
2026-02-26	BUY	PROGRAM	유원양 Yuwonyang	CEO	20.0K	-	-	-
2026-02-26	BUY	PROGRAM	송창근 Song Chang-geun	Managing Director	1.8K	-	-	-
2026-02-26	BUY	PROGRAM	조익성 Jo Ik-seong	Vice President/COO	2.0K	-	-	-
2026-02-26	BUY	PROGRAM	오승우 Seungwoo Oh	Center Director	1.1K	-	-	-
2025-07-25	SELL	Market Sell	오승우 Seungwoo Oh	Center Director	-32.2K	₩6,700	-43.0%	₩216M ($150K)
2025-04-24	BUY	주식매수청구권 행사	최찬규 Choi Chan-gyu	Managing Director	3.0K	₩6,650	+44.1%	₩20M ($14K)
2025-04-09	BUY	Market Buy	유원양 Yuwonyang	CEO	5.0K	₩5,970	+60.5%	₩30M ($21K)
2025-04-07	BUY	Market Buy	전상훈 Jeon Sang-hoon	vice president	2.5K	₩6,240	+53.5%	₩16M ($11K)
2025-04-02	BUY	Market Buy	유원양 Yuwonyang	CEO	2.0K	₩7,120	+34.5%	₩14M ($10K)
2025-03-27	BUY	Market Buy	유원양 Yuwonyang	CEO	2.9K	₩7,550	+26.9%	₩22M ($15K)
2024-10-02	BUY	신규선임	오승우 Seungwoo Oh	Center Director	32.2K	₩9,620	-0.4%	₩310M ($215K)
2024-08-07	BUY	Market Buy	유원양 Yuwonyang	CEO	500	₩11,440	-16.3%	₩6M ($4K)
2024-07-11	BUY	주식매수청구권 행사	전상훈 Jeon Sang-hoon	Managing Director	17.4K	₩15,970	-40.0%	₩278M ($193K)
2024-04-12	BUY	주식매수청구권 행사	송창근 Song Chang-geun	Managing Director	18.0K	₩21,150	-54.7%	₩381M ($264K)
2024-04-12	BUY	주식매수청구권 행사	최찬규 Choi Chan-gyu	Managing Director	6.0K	₩21,150	-54.7%	₩127M ($88K)
2024-03-04	SELL	Market Sell	국민연금공단 National Pension Service	-	-39.1K	₩17,890	+46.5%	₩700M ($486K)
2024-03-04	BUY	Market Buy	국민연금공단 National Pension Service	-	7.7K	₩17,890	-46.5%	₩137M ($95K)
2024-02-29	BUY	Market Buy	국민연금공단 National Pension Service	-	10.0K	₩17,650	-45.7%	₩177M ($123K)
2024-02-29	SELL	Market Sell	국민연금공단 National Pension Service	-	-31.4K	₩17,650	+45.7%	₩554M ($384K)
2024-02-28	SELL	Market Sell	국민연금공단 National Pension Service	-	-1.1K	₩18,160	+47.3%	₩21M ($14K)
2024-02-23	BUY	Market Buy	국민연금공단 National Pension Service	-	3.1K	₩20,350	-52.9%	₩63M ($44K)
2024-02-22	BUY	Market Buy	국민연금공단 National Pension Service	-	2.0K	₩19,070	-49.8%	₩38M ($27K)
2024-02-22	SELL	Market Sell	국민연금공단 National Pension Service	-	-11.5K	₩19,070	+49.8%	₩220M ($153K)
2024-02-21	SELL	Market Sell	국민연금공단 National Pension Service	-	-3.7K	₩18,700	+48.8%	₩70M ($48K)
2024-02-16	BUY	Market Buy	국민연금공단 National Pension Service	-	5.4K	₩19,310	-50.4%	₩104M ($72K)
2024-02-16	SELL	Market Sell	국민연금공단 National Pension Service	-	-10.0K	₩19,310	+50.4%	₩193M ($134K)
2024-02-15	SELL	Market Sell	국민연금공단 National Pension Service	-	-20.0K	₩19,710	+51.4%	₩394M ($274K)
2024-02-14	SELL	Market Sell	국민연금공단 National Pension Service	-	-10.0K	₩19,910	+51.9%	₩199M ($138K)
2024-02-13	SELL	Market Sell	국민연금공단 National Pension Service	-	-11.9K	₩18,360	+47.8%	₩218M ($151K)
2024-02-08	SELL	Market Sell	국민연금공단 National Pension Service	-	-7.0K	₩18,290	+47.6%	₩127M ($88K)
2024-02-08	BUY	Market Buy	국민연금공단 National Pension Service	-	39	₩18,290	-47.6%	₩713K ($495)
2024-02-07	BUY	Market Buy	국민연금공단 National Pension Service	-	5.4K	₩18,010	-46.8%	₩98M ($68K)
2024-02-06	BUY	Market Buy	국민연금공단 National Pension Service	-	24.7K	₩18,580	-48.4%	₩459M ($318K)
2024-02-06	SELL	Market Sell	국민연금공단 National Pension Service	-	-20.0K	₩18,580	+48.4%	₩372M ($258K)
2024-02-05	BUY	Market Buy	국민연금공단 National Pension Service	-	29.3K	₩18,520	-48.3%	₩543M ($377K)
2024-02-05	SELL	Market Sell	국민연금공단 National Pension Service	-	-30.0K	₩18,520	+48.3%	₩556M ($386K)
2024-02-02	BUY	Market Buy	국민연금공단 National Pension Service	-	12.0K	₩18,900	-49.3%	₩227M ($158K)

Showing the 50 most recent of 76 filings.

Frequently asked questions

Who has been buying TEMC stock?: 4 distinct insiders have filed 24 disclosed insider purchases in TEMC (425040), most recently on 2026-06-04. 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 TEMC have?: TEMC has 24 buy-side and 30 sell-side disclosures on record, covering ₩11.4B ($7.9M) in total reported value, spanning 2024-01-02 to 2026-06-04.
Where does StockDrifts get TEMC 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 TEMC. For how StockDrifts scores these disclosures, see the Korea insider signal tier research, or browse every Korean stock we track.