Who has been buying Fiber Pro stock?

7 distinct insiders have filed 0 disclosed insider purchases in Fiber Pro (368770), most recently on 2026-04-07. 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 Fiber Pro have?

Fiber Pro has 0 buy-side and 9 sell-side disclosures on record, covering ₩12.7B ($8.8M) in total reported value, spanning 2024-06-04 to 2026-04-07.

Where does StockDrifts get Fiber Pro 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.

Fiber Pro 368770

Company

파이버프로Fiber Pro

Insiders

Buys

Total Value

₩12.7B ($8.8M)

Avg Return

-81.97%

Last Filing

2026-04-07

Fiber Pro (368770) has 0 disclosed insider purchases and 9 disclosed disposals on record, filed by 7 distinct insiders. Together those filings cover ₩12.7B ($8.8M) in reported transaction value. The earliest filing StockDrifts holds for Fiber Pro is dated 2024-06-04; the most recent is 2026-04-07. 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 -81.97%, 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
2026-04-07	SELL	시간외매매	인터베스트 Intervest	-	-46.0K	₩20,250	-19.0%	₩931M ($647K)
2026-04-06	SELL	Market Sell	정호진 Hojin Jeong	Internal director	-22.0K	₩22,050	-9.3%	₩485M ($337K)
2026-04-06	SELL	Market Sell	김종관 Kim Jong-gwan	Technical Director	-10.0K	₩22,050	-9.3%	₩221M ($153K)
2026-03-13	BUY	주식매수선택권	차상준 Sangjun Cha	Technical Director	58.5K	-	-	-
2026-02-27	BUY	시간외매매	고연완 Go Yeonwan	CEO	7.0K	-	-	-
2026-02-27	SELL	시간외매매	김종관 Kim Jong-gwan	Technical Director	-7.0K	-	-	-
2026-02-05	SELL	Market Sell	인터베스트 Intervest	-	-500.0K	₩15,050	+7.1%	₩7.5B ($5.2M)
2026-02-04	SELL	Market Sell	인터베스트 Intervest	-	-200.0K	₩17,000	+17.8%	₩3.4B ($2.4M)
2025-10-20	SELL	증여	이봉완 Bongwan Lee	Internal director	-250.0K	₩5,850	-139.0%	₩1.5B ($1.0M)
2025-09-10	BUY	주식매수선택권	차상준 Sangjun Cha	Technical Director	36.0K	₩6,130	+128.1%	₩221M ($153K)
2025-09-10	BUY	주식매수선택권	용재철 Yong Jae-cheol	Internal director	30.0K	₩6,130	+128.1%	₩184M ($128K)
2025-05-02	SELL	시간외매매	정호진 Hojin Jeong	Internal director	-11.0K	₩7,170	-95.0%	₩79M ($55K)
2025-05-02	BUY	시간외매매	고연완 Go Yeonwan	CEO	18.4K	₩7,170	+95.0%	₩132M ($92K)
2025-03-19	SELL	Market Sell	정현주 Hyunjoo Jeong	Internal director	-7.7K	₩7,840	-78.3%	₩60M ($42K)
2025-03-17	SELL	Market Sell	이봉완 Bongwan Lee	Internal director	-100.0K	₩8,000	-74.8%	₩800M ($556K)
2024-10-24	SELL	Market Sell	이정우 Jeongwoo Lee	Technical Director	-7.5K	₩4,610	-203.3%	₩35M ($24K)
2024-10-24	SELL	Market Sell	이길호 Lee Gil-ho	Sales Director	-22.0K	₩4,610	-203.3%	₩101M ($70K)
2024-08-07	BUY	주식매수선택권	김종관 Kim Jong-gwan	Technical Director	22.3K	₩3,365	+315.4%	₩75M ($52K)
2024-08-07	BUY	주식매수선택권	용재철 Yong Jae-cheol	Internal director	70.0K	₩3,365	+315.4%	₩236M ($164K)
2024-08-07	SELL	시간외매매	차상준 Sangjun Cha	Technical Director	-7.4K	₩3,365	-315.4%	₩25M ($17K)
2024-08-07	BUY	주식매수선택권	차상준 Sangjun Cha	Technical Director	48.0K	₩3,365	+315.4%	₩162M ($112K)
2024-06-04	SELL	Market Sell	김종관 Kim Jong-gwan	Technical Director	-6.0K	₩4,915	-184.4%	₩29M ($20K)

Frequently asked questions

Who has been buying Fiber Pro stock?: 7 distinct insiders have filed 0 disclosed insider purchases in Fiber Pro (368770), most recently on 2026-04-07. 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 Fiber Pro have?: Fiber Pro has 0 buy-side and 9 sell-side disclosures on record, covering ₩12.7B ($8.8M) in total reported value, spanning 2024-06-04 to 2026-04-07.
Where does StockDrifts get Fiber Pro 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 Fiber Pro. For how StockDrifts scores these disclosures, see the Korea insider signal tier research, or browse every Korean stock we track.