Who has been buying i3 system stock?

4 distinct insiders have filed 2 disclosed insider purchases in i3 system (214430), most recently on 2026-02-06. 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 i3 system have?

i3 system has 2 buy-side and 12 sell-side disclosures on record, covering ₩3.2B ($2.2M) in total reported value, spanning 2024-04-08 to 2026-02-06.

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.

i3 system 214430

Company

아이쓰리시스템i3 system

Insiders

Buys

Total Value

₩3.2B ($2.2M)

Avg Return

-10.22%

Last Filing

2026-02-06

i3 system (214430) has 2 disclosed insider purchases and 12 disclosed disposals on record, filed by 4 distinct insiders. Together those filings cover ₩3.2B ($2.2M) in reported transaction value. The earliest filing StockDrifts holds for i3 system is dated 2024-04-08; the most recent is 2026-02-06. Across these filings the average return since disclosure is -10.22%, 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
2026-02-06	SELL	Market Sell	정한 Jeonghan	CEO	-2.0K	₩109,700	-3.0%	₩219M ($152K)
2026-02-05	SELL	Market Sell	정한 Jeonghan	CEO	-3.8K	₩111,900	-1.0%	₩424M ($294K)
2026-02-04	SELL	Market Sell	정한 Jeonghan	CEO	-2.6K	₩123,600	+8.6%	₩323M ($224K)
2026-02-03	SELL	Market Sell	정한 Jeonghan	CEO	-3.6K	₩129,900	+13.0%	₩468M ($325K)
2025-12-24	SELL	Market Sell	정한 Jeonghan	CEO	-2.7K	₩79,100	-42.9%	₩214M ($148K)
2025-12-23	SELL	Market Sell	정한 Jeonghan	CEO	-4.8K	₩74,200	-52.3%	₩360M ($250K)
2025-12-22	SELL	Market Sell	정한 Jeonghan	CEO	-2.5K	₩78,400	-44.1%	₩192M ($133K)
2025-08-12	SELL	Market Sell	안재덕 Jaedeok Ahn	Managing Director	-2.0K	₩93,000	-21.5%	₩186M ($129K)
2025-06-12	SELL	Market Sell	정한 Jeonghan	CEO	-4.5K	₩83,500	-35.3%	₩372M ($258K)
2025-06-11	SELL	Market Sell	정한 Jeonghan	CEO	-1.6K	₩83,500	-35.3%	₩129M ($90K)
2024-08-13	BUY	Market Buy	이희철 Heechul Lee	Outside Director	452	₩31,450	+259.3%	₩14M ($10K)
2024-08-12	BUY	Market Buy	이희철 Heechul Lee	Outside Director	1.5K	₩30,100	+275.4%	₩47M ($32K)
2024-08-07	SELL	Market Sell	염승섭 Yeom Seung-seop	Full-time auditor	-3.6K	₩28,000	-303.6%	₩101M ($70K)
2024-04-08	SELL	Market Sell	안재덕 Jaedeok Ahn	Managing Director	-3.0K	₩43,400	-160.4%	₩130M ($90K)

Frequently asked questions

Who has been buying i3 system stock?: 4 distinct insiders have filed 2 disclosed insider purchases in i3 system (214430), most recently on 2026-02-06. 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 i3 system have?: i3 system has 2 buy-side and 12 sell-side disclosures on record, covering ₩3.2B ($2.2M) in total reported value, spanning 2024-04-08 to 2026-02-06.
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.