Who has been buying complementary stock?

4 distinct insiders have filed 6 disclosed insider purchases in complementary (027580), most recently on 2026-04-29. 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 complementary have?

complementary has 6 buy-side and 0 sell-side disclosures on record, covering ₩214M ($149K) in total reported value, spanning 2024-08-28 to 2026-04-29.

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.

complementary 027580

Company

상보complementary

Insiders

Buys

Total Value

₩214M ($149K)

Avg Return

-40.15%

Last Filing

2026-04-29

complementary (027580) has 6 disclosed insider purchases and 0 disclosed disposals on record, filed by 4 distinct insiders. Together those filings cover ₩214M ($149K) in reported transaction value. The earliest filing StockDrifts holds for complementary is dated 2024-08-28; the most recent is 2026-04-29. Across these filings the average return since disclosure is -40.15%, 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
2026-09-21	BUY	Market Buy	레이노코리아 Raynaud Korea	-	21.6K	₩1,879	-3.0%	₩39M ($27K)
2026-09-18	BUY	Market Buy	레이노코리아 Raynaud Korea	-	25.5K	₩1,768	+3.0%	₩45M ($31K)
2026-09-17	BUY	Market Buy	레이노코리아 Raynaud Korea	-	20.8K	₩1,822	+0.0%	₩36M ($25K)
2026-09-16	BUY	Market Buy	레이노코리아 Raynaud Korea	-	19.5K	₩1,737	+1.8%	₩33M ($23K)
2026-09-15	BUY	Market Buy	레이노코리아 Raynaud Korea	-	22.7K	₩1,766	+0.1%	₩37M ($26K)
2026-09-14	BUY	Market Buy	레이노코리아 Raynaud Korea	-	6.0K	₩1,690	+4.6%	₩10M ($7K)
2026-09-01	BUY	신규선임	이강현 Kanghyun Lee	moving	11.3K	₩1,630	+4.4%	₩18M ($13K)
2026-08-05	SELL	장외매도	김상근 Kim Sang-geun	CEO	-1.8M	₩1,806	+4.2%	₩2.5B ($1.8M)
2026-08-05	BUY	장외매수	레이노코리아 Raynaud Korea	-	1.8M	₩1,806	-4.2%	₩2.5B ($1.8M)
2026-04-29	SELL	주식병합	김진호 Jinho Kim	moving	-28.4K	₩598	+0.0%	₩17M ($12K)
2026-04-29	SELL	주식병합	이제영 Lee Je-young	moving	-33.0K	₩598	+0.0%	₩20M ($14K)
2026-04-29	SELL	주식병합	김형규 Kim Hyeong-gyu	vice president	-16.0K	₩598	+0.0%	₩10M ($7K)
2026-04-29	SELL	주식병합	이홍민 Hongmin Lee	vice president	-111.9K	₩598	+0.0%	₩67M ($46K)
2026-04-29	SELL	주식병합	김현철 Hyuncheol Kim	CSO	-651.1K	₩598	+0.0%	₩389M ($270K)
2026-04-29	SELL	주식병합	이정형 Jeonghyeong Lee	moving	-16.8K	₩598	+0.0%	₩10M ($7K)
2026-04-29	SELL	주식병합	김상근 Kim Sang-geun	CEO	-7.0M	₩598	+0.0%	₩4.2B ($2.9M)
2026-02-23	BUY	신규선임	김형규 Kim Hyeong-gyu	vice president	20.0K	-	-	-
2026-01-07	BUY	Market Buy	이홍민 Hongmin Lee	vice president	11.0K	₩965	-30.8%	₩11M ($7K)
2026-01-05	BUY	Market Buy	이홍민 Hongmin Lee	vice president	108.8K	₩731	-8.6%	₩80M ($55K)
2024-08-29	BUY	Market Buy	이제영 Lee Je-young	moving	7.2K	₩1,335	-50.0%	₩10M ($7K)
2024-08-28	BUY	Market Buy	이정형 Jeonghyeong Lee	moving	21.0K	₩1,350	-50.5%	₩28M ($20K)
2024-08-28	BUY	Market Buy	이제영 Lee Je-young	moving	28.2K	₩1,350	-50.5%	₩38M ($26K)
2024-08-28	BUY	Market Buy	김진호 Jinho Kim	moving	35.5K	₩1,350	-50.5%	₩48M ($33K)

Frequently asked questions

Who has been buying complementary stock?: 4 distinct insiders have filed 6 disclosed insider purchases in complementary (027580), most recently on 2026-04-29. 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 complementary have?: complementary has 6 buy-side and 0 sell-side disclosures on record, covering ₩214M ($149K) in total reported value, spanning 2024-08-28 to 2026-04-29.
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.