Who has been buying Tomato System stock?

3 distinct insiders have filed 6 disclosed insider purchases in Tomato System (393210), most recently on 2026-06-02. 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 Tomato System have?

Tomato System has 6 buy-side and 6 sell-side disclosures on record, covering ₩632M ($439K) in total reported value, spanning 2024-03-01 to 2026-06-02.

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.

Tomato System 393210

Company

토마토시스템Tomato System

Insiders

Buys

Total Value

₩632M ($439K)

Avg Return

-1.53%

Last Filing

2026-06-02

Tomato System (393210) has 6 disclosed insider purchases and 6 disclosed disposals on record, filed by 3 distinct insiders. Together those filings cover ₩632M ($439K) in reported transaction value. The earliest filing StockDrifts holds for Tomato System is dated 2024-03-01; the most recent is 2026-06-02. Across these filings the average return since disclosure is -1.53%, 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
2026-09-23	SELL	Market Sell	박성준 Seongjun Park	Managing Director	-50.0K	₩3,715	+0.0%	₩128M ($89K)
2026-09-22	SELL	Market Sell	박성준 Seongjun Park	Managing Director	-1.9K	₩3,315	-12.1%	₩4M ($3K)
2026-09-21	SELL	Market Sell	박성준 Seongjun Park	Managing Director	-5.5K	₩2,550	-45.7%	₩12M ($8K)
2026-09-18	SELL	Market Sell	박성준 Seongjun Park	Managing Director	-5.6K	₩1,969	-88.7%	₩12M ($9K)
2026-09-11	SELL	Market Sell	박성준 Seongjun Park	Managing Director	-3.3K	₩2,150	-2.3%	₩7M ($5K)
2026-09-10	SELL	Market Sell	박성준 Seongjun Park	Managing Director	-3.7K	₩2,165	-1.6%	₩8M ($6K)
2026-09-09	SELL	Market Sell	박성준 Seongjun Park	Managing Director	-2.5K	₩2,225	+1.1%	₩6M ($4K)
2026-08-04	BUY	Market Buy	이강찬 Kangchan Lee	Each CEO	3.9K	₩2,295	+0.0%	₩9M ($6K)
2026-08-03	BUY	Market Buy	이강찬 Kangchan Lee	Each CEO	6.0K	₩2,135	+7.5%	₩13M ($9K)
2026-07-31	BUY	Market Buy	이강찬 Kangchan Lee	Each CEO	116	₩2,090	+9.8%	₩242K ($168)
2026-07-30	BUY	Market Buy	조길주 Jo Gil-ju	Each CEO	10.0K	₩1,950	+7.2%	₩20M ($14K)
2026-07-27	SELL	Market Sell	박성준 Seongjun Park	Managing Director	-10.0K	₩2,160	+3.2%	₩22M ($15K)
2026-07-24	SELL	Market Sell	박성준 Seongjun Park	Managing Director	-5.0K	₩2,090	+0.0%	₩11M ($7K)
2026-06-02	SELL	증여	박성준 Seongjun Park	Managing Director	-32.5K	₩3,190	+5.0%	₩104M ($72K)
2026-06-02	SELL	증여	박성준 Seongjun Park	Managing Director	-32.5K	₩3,190	+5.0%	₩104M ($72K)
2026-06-02	SELL	증여	박성준 Seongjun Park	Managing Director	-37.5K	₩3,190	+5.0%	₩120M ($83K)
2026-06-02	SELL	증여	박성준 Seongjun Park	Managing Director	-38.0K	₩3,190	+5.0%	₩121M ($84K)
2026-04-08	BUY	Market Buy	김대헌 Daeheon Kim	moving	2.0K	₩4,160	+11.2%	₩8M ($6K)
2026-03-01	BUY	신규보고	이지율 Lee Ji-yul	moving	4.1K	-	-	-
2026-03-01	BUY	신규보고	박주완 Park Joo-wan	moving	2.6K	-	-	-
2025-12-16	SELL	증여	이상돈 Lee Sang-don	chairman	-32.0K	₩5,420	+3.1%	₩173M ($120K)
2025-11-25	SELL	증여	이상돈 Lee Sang-don	chairman	-1.9K	₩5,290	+0.8%	₩10M ($7K)
2025-11-24	BUY	수증	최영근 Younggeun Choi	moving	360	₩5,110	+2.7%	₩2M ($1K)
2025-11-24	SELL	증여	이상돈 Lee Sang-don	chairman	-156.1K	₩5,110	-2.7%	₩798M ($554K)
2025-11-24	SELL	증여	이상돈 Lee Sang-don	chairman	-117.4K	₩5,110	-2.7%	₩600M ($417K)
2025-11-24	SELL	증여	이상돈 Lee Sang-don	chairman	-78.1K	₩5,110	-2.7%	₩399M ($277K)
2025-11-24	BUY	수증	서정훈 Seo Jeong-hoon	Managing Director	500	₩5,110	+2.7%	₩3M ($2K)
2025-11-24	BUY	수증	허태주 Heo Tae-joo	Managing Director	460	₩5,110	+2.7%	₩2M ($2K)
2025-11-24	BUY	수증	김대헌 Daeheon Kim	moving	1.3K	₩5,110	+2.7%	₩7M ($5K)
2025-11-24	BUY	수증	김재혁 Jaehyuk Kim	moving	1.5K	₩5,110	+2.7%	₩7M ($5K)
2025-11-24	BUY	수증	조길주 Jo Gil-ju	CEO	156.1K	₩5,110	+2.7%	₩798M ($554K)
2025-09-10	SELL	Market Sell	박성준 Seongjun Park	Managing Director	-30.0K	₩6,860	+23.5%	₩206M ($143K)
2025-09-09	SELL	Market Sell	박성준 Seongjun Park	Managing Director	-4.1K	₩6,980	+24.8%	₩29M ($20K)
2025-09-08	SELL	Market Sell	박성준 Seongjun Park	Managing Director	-40.0K	₩7,180	+26.9%	₩287M ($199K)
2025-04-11	BUY	Market Buy	조길주 Jo Gil-ju	vice president	10.2K	₩5,800	-9.5%	₩59M ($41K)
2024-08-07	BUY	Market Buy	김대헌 Daeheon Kim	moving	160	₩6,480	-19.0%	₩1M ($720)
2024-07-16	BUY	Market Buy	김대헌 Daeheon Kim	moving	1.0K	₩8,720	-39.8%	₩9M ($6K)
2024-07-15	BUY	Market Buy	김대헌 Daeheon Kim	moving	50	₩8,860	-40.7%	₩443K ($308)
2024-07-12	BUY	Market Buy	김대헌 Daeheon Kim	moving	1.0K	₩8,930	-41.2%	₩9M ($6K)
2024-04-30	SELL	증여	박성준 Seongjun Park	Managing Director	-8.3K	₩8,210	+36.0%	₩68M ($48K)
2024-04-30	SELL	증여	박성준 Seongjun Park	Managing Director	-100.0K	₩8,210	+36.0%	₩821M ($570K)
2024-04-30	SELL	증여	박성준 Seongjun Park	Managing Director	-8.3K	₩8,210	+36.0%	₩68M ($48K)
2024-04-30	SELL	증여	박성준 Seongjun Park	Managing Director	-3.3K	₩8,210	+36.0%	₩27M ($19K)
2024-04-29	SELL	증여	김재혁 Jaehyuk Kim	moving	-103.4K	₩7,850	+33.1%	₩812M ($564K)
2024-04-29	SELL	증여	김재혁 Jaehyuk Kim	moving	-8.6K	₩7,850	+33.1%	₩68M ($47K)
2024-04-29	SELL	증여	김재혁 Jaehyuk Kim	moving	-8.6K	₩7,850	+33.1%	₩68M ($47K)
2024-04-29	SELL	증여	김재혁 Jaehyuk Kim	moving	-3.4K	₩7,850	+33.1%	₩27M ($19K)
2024-04-18	SELL	Market Sell	김대헌 Daeheon Kim	moving	-500	₩6,760	+22.3%	₩3M ($2K)
2024-04-17	SELL	Market Sell	김대헌 Daeheon Kim	moving	-580	₩6,050	+13.2%	₩4M ($2K)
2024-04-16	SELL	Market Sell	김대헌 Daeheon Kim	moving	-2.8K	₩5,830	+9.9%	₩16M ($11K)

Showing the 50 most recent of 51 filings.

Frequently asked questions

Who has been buying Tomato System stock?: 3 distinct insiders have filed 6 disclosed insider purchases in Tomato System (393210), most recently on 2026-06-02. 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 Tomato System have?: Tomato System has 6 buy-side and 6 sell-side disclosures on record, covering ₩632M ($439K) in total reported value, spanning 2024-03-01 to 2026-06-02.
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.