Who has been buying Gwangmyeong Electric stock?

2 distinct insiders have filed 22 disclosed insider purchases in Gwangmyeong Electric (017040), most recently on 2026-06-25. 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 Gwangmyeong Electric have?

Gwangmyeong Electric has 22 buy-side and 1 sell-side disclosures on record, covering ₩12.6B ($8.8M) in total reported value, spanning 2024-03-19 to 2026-06-25.

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.

Gwangmyeong Electric 017040

Company

광명전기Gwangmyeong Electric

Insiders

Buys

Total Value

₩12.6B ($8.8M)

Avg Return

+19.36%

Last Filing

2026-06-25

Gwangmyeong Electric (017040) has 22 disclosed insider purchases and 1 disclosed disposals on record, filed by 2 distinct insiders. Together those filings cover ₩12.6B ($8.8M) in reported transaction value. The earliest filing StockDrifts holds for Gwangmyeong Electric is dated 2024-03-19; the most recent is 2026-06-25. Across these filings the average return since disclosure is +19.36%, 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
2026-06-25	BUY	신규선임	조광식 Jo Gwang-sik	Internal director	79.5K	-	-	-
2026-04-17	SELL	장외매도	피앤씨테크 P&C Tech	-	-10.3M	₩932	+0.0%	₩9.6B ($6.6M)
2026-04-17	BUY	장외매수	에이치케이홀딩스 HK Holdings	-	10.3M	₩932	+0.0%	₩9.6B ($6.6M)
2025-10-29	BUY	Market Buy	피앤씨테크 P&C Tech	-	500.0K	₩1,583	-3.4%	₩792M ($550K)
2025-10-28	BUY	Market Buy	피앤씨테크 P&C Tech	-	250.0K	₩1,617	-5.4%	₩404M ($281K)
2025-10-27	BUY	장외매수	나반홀딩스 Navan Holdings	-	2.6M	₩1,638	-6.7%	₩4.3B ($3.0M)
2025-10-27	BUY	장외매수	나반홀딩스 Navan Holdings	-	2.5M	₩1,638	-6.7%	₩4.1B ($2.8M)
2025-10-27	BUY	Market Buy	피앤씨테크 P&C Tech	-	1.9M	₩1,638	-6.7%	₩3.1B ($2.2M)
2025-10-27	BUY	장외매수	피앤씨테크 P&C Tech	-	5.1M	₩1,638	-6.7%	₩8.3B ($5.8M)
2025-10-27	SELL	장외매도	나반홀딩스 Navan Holdings	-	-5.1M	₩1,638	+6.7%	₩8.3B ($5.8M)
2025-10-24	BUY	Market Buy	피앤씨테크 P&C Tech	-	356.0K	₩1,568	-2.5%	₩558M ($388K)
2025-10-02	BUY	Market Buy	피앤씨테크 P&C Tech	-	39.7K	₩1,357	+12.7%	₩54M ($37K)
2025-10-01	BUY	Market Buy	피앤씨테크 P&C Tech	-	215.3K	₩1,346	+13.6%	₩290M ($201K)
2025-09-30	BUY	Market Buy	피앤씨테크 P&C Tech	-	462.5K	₩1,400	+9.2%	₩648M ($450K)
2025-09-29	BUY	Market Buy	피앤씨테크 P&C Tech	-	287.0K	₩1,366	+11.9%	₩392M ($272K)
2025-09-26	BUY	Market Buy	피앤씨테크 P&C Tech	-	148.0K	₩1,268	+20.6%	₩188M ($130K)
2025-09-25	BUY	Market Buy	피앤씨테크 P&C Tech	-	210.0K	₩1,193	+28.2%	₩251M ($174K)
2025-09-24	BUY	Market Buy	피앤씨테크 P&C Tech	-	200.0K	₩1,218	+25.5%	₩244M ($169K)
2025-09-23	BUY	Market Buy	피앤씨테크 P&C Tech	-	50.0K	₩1,209	+26.5%	₩60M ($42K)
2025-09-22	BUY	Market Buy	피앤씨테크 P&C Tech	-	45.0K	₩1,182	+29.4%	₩53M ($37K)
2025-09-19	BUY	Market Buy	피앤씨테크 P&C Tech	-	69.0K	₩1,139	+34.2%	₩79M ($55K)
2025-09-18	BUY	Market Buy	피앤씨테크 P&C Tech	-	61.1K	₩1,124	+36.0%	₩69M ($48K)
2025-09-17	BUY	Market Buy	피앤씨테크 P&C Tech	-	99.9K	₩1,123	+36.1%	₩112M ($78K)
2025-09-16	BUY	Market Buy	피앤씨테크 P&C Tech	-	40.0K	₩1,122	+36.3%	₩45M ($31K)
2025-09-15	BUY	Market Buy	피앤씨테크 P&C Tech	-	45.0K	₩1,135	+34.7%	₩51M ($35K)
2025-09-12	BUY	Market Buy	피앤씨테크 P&C Tech	-	110.0K	₩1,134	+34.8%	₩125M ($87K)
2025-09-11	BUY	Market Buy	피앤씨테크 P&C Tech	-	20.0K	₩1,126	+35.8%	₩23M ($16K)
2025-09-10	BUY	Market Buy	피앤씨테크 P&C Tech	-	12.2K	₩1,125	+35.9%	₩14M ($10K)
2025-09-09	BUY	Market Buy	피앤씨테크 P&C Tech	-	47.8K	₩1,099	+39.1%	₩53M ($36K)
2025-07-25	SELL	Market Sell	엠에이치건설 MH Construction	-	-4.5M	₩1,113	-37.4%	₩5.0B ($3.5M)
2025-06-24	SELL	장외매도	나반홀딩스 Navan Holdings	-	-2.5M	₩2,030	+24.7%	₩5.0B ($3.5M)
2025-06-23	BUY	장외매수	엠에이치건설 MH Construction	-	4.5M	₩2,050	-25.4%	₩9.2B ($6.4M)
2025-06-02	SELL	장외매도	나반홀딩스 Navan Holdings	-	-4.5M	₩2,095	+27.0%	₩9.4B ($6.6M)
2025-02-14	SELL	기타	무궁화인포메이션테크놀로지 Mugunghwa Information Technology	-	-6.5M	₩1,489	-2.7%	₩9.7B ($6.7M)
2025-02-14	BUY	기타	나반홀딩스 Navan Holdings	-	6.5M	₩1,489	+2.7%	₩9.7B ($6.7M)
2024-09-26	BUY	장외매수	무궁화인포메이션테크놀로지 Mugunghwa Information Technology	-	6.5M	₩1,806	-15.3%	₩11.8B ($8.2M)
2024-09-26	SELL	장외매도	나반홀딩스 Navan Holdings	-	-6.5M	₩1,806	+15.3%	₩11.8B ($8.2M)
2024-05-07	SELL	장외매도	나반홀딩스 Navan Holdings	-	-2.6M	₩3,185	+52.0%	₩8.3B ($5.7M)
2024-04-03	BUY	장외매수	나반홀딩스 Navan Holdings	-	6.5M	₩2,495	-38.7%	₩16.2B ($11.3M)
2024-04-03	SELL	장외매도	이재광 Jaekwang Lee	CEO	-6.5M	₩2,495	+38.7%	₩16.2B ($11.3M)
2024-03-19	BUY	장외매수	나반홀딩스 Navan Holdings	-	6.5M	₩2,445	-37.5%	₩15.9B ($11.0M)
2024-03-19	SELL	장외매도	조광식 Jo Gwang-sik	CEO	-6.5M	₩2,445	+37.5%	₩15.9B ($11.0M)

Frequently asked questions

Who has been buying Gwangmyeong Electric stock?: 2 distinct insiders have filed 22 disclosed insider purchases in Gwangmyeong Electric (017040), most recently on 2026-06-25. 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 Gwangmyeong Electric have?: Gwangmyeong Electric has 22 buy-side and 1 sell-side disclosures on record, covering ₩12.6B ($8.8M) in total reported value, spanning 2024-03-19 to 2026-06-25.
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.