Who has been buying S-Traffic stock?

18 distinct insiders have filed 80 disclosed insider purchases in S-Traffic (234300), most recently on 2026-07-15. 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 S-Traffic have?

S-Traffic has 80 buy-side and 0 sell-side disclosures on record, covering ₩818M ($568K) in total reported value, spanning 2021-11-25 to 2026-07-15.

Where does StockDrifts get S-Traffic 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.

S-Traffic 234300

Company

에스트래픽S-Traffic

Insiders

Buys

Total Value

₩818M ($568K)

Avg Return

-0.36%

Last Filing

2026-07-15

S-Traffic (234300) has 80 disclosed insider purchases and 0 disclosed disposals on record, filed by 18 distinct insiders. Together those filings cover ₩818M ($568K) in reported transaction value. The earliest filing StockDrifts holds for S-Traffic is dated 2021-11-25; the most recent is 2026-07-15. 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 -0.36%, 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
2026-07-27	BUY	Market Buy	이장한 Lee Jang-han	vice president	2.0K	₩2,885	-5.9%	₩6M ($4K)
2026-07-15	BUY	Market Buy	이장한 Lee Jang-han	vice president	2.0K	₩2,970	-2.2%	₩6M ($4K)
2026-07-14	BUY	Market Buy	이장한 Lee Jang-han	vice president	1.0K	₩2,750	+5.6%	₩3M ($2K)
2026-07-10	BUY	Market Buy	이장한 Lee Jang-han	vice president	1.0K	₩2,840	+2.3%	₩3M ($2K)
2026-07-08	BUY	Market Buy	이장한 Lee Jang-han	vice president	1.0K	₩2,790	-0.4%	₩3M ($2K)
2026-06-30	BUY	Market Buy	이장한 Lee Jang-han	vice president	3.0K	₩2,865	-0.7%	₩9M ($6K)
2026-06-02	BUY	Market Buy	이장한 Lee Jang-han	vice president	10.0K	₩2,985	+0.0%	₩30M ($21K)
2026-04-16	BUY	Market Buy	문찬종 Chanjong Moon	CEO	10.0K	₩3,615	+5.4%	₩36M ($25K)
2026-04-14	BUY	Market Buy	문찬종 Chanjong Moon	CEO	20.0K	₩3,450	+10.4%	₩69M ($48K)
2026-02-23	BUY	Market Buy	이장한 Lee Jang-han	vice president	4.0K	₩3,810	-4.2%	₩15M ($11K)
2026-02-04	BUY	Market Buy	이장한 Lee Jang-han	vice president	5.4K	₩3,590	+1.7%	₩19M ($13K)
2026-02-03	BUY	Market Buy	이장한 Lee Jang-han	vice president	5.6K	₩3,590	+1.7%	₩20M ($14K)
2026-01-28	BUY	Market Buy	이장한 Lee Jang-han	vice president	100	₩3,625	+0.7%	₩363K ($252)
2026-01-28	BUY	Market Buy	이장한 Lee Jang-han	vice president	900	₩3,625	+0.7%	₩3M ($2K)
2026-01-27	BUY	Market Buy	이장한 Lee Jang-han	vice president	646	₩3,600	+1.4%	₩2M ($2K)
2026-01-27	BUY	Market Buy	이장한 Lee Jang-han	vice president	1.4K	₩3,600	+1.4%	₩5M ($3K)
2026-01-27	BUY	Market Buy	이장한 Lee Jang-han	vice president	2.0K	₩3,600	+1.4%	₩7M ($5K)
2026-01-02	BUY	신규선임	이장한 Lee Jang-han	vice president	10.0K	₩3,600	+1.4%	₩36M ($25K)
2025-12-30	BUY	Market Buy	박홍권 Park Hong-kwon	Managing Director	3.0K	₩3,500	+4.3%	₩11M ($7K)
2025-12-23	BUY	Market Buy	박동연 Park Dong-yeon	Managing Director	250	₩3,480	+4.9%	₩870K ($604)
2025-12-23	BUY	Market Buy	박동연 Park Dong-yeon	Managing Director	500	₩3,480	+4.9%	₩2M ($1K)
2025-12-23	BUY	Market Buy	박동연 Park Dong-yeon	Managing Director	250	₩3,480	+4.9%	₩870K ($604)
2025-12-23	BUY	Market Buy	박동연 Park Dong-yeon	Managing Director	234	₩3,480	+4.9%	₩814K ($566)
2025-12-17	BUY	Market Buy	최근배 Cheunbae	vice president	1.0K	₩3,495	+4.4%	₩3M ($2K)
2025-12-11	BUY	Market Buy	양찬모 Chanmo Yang	vice president	1.5K	₩3,605	+1.3%	₩5M ($4K)
2025-12-04	BUY	Market Buy	양찬모 Chanmo Yang	vice president	1.5K	₩3,605	+1.3%	₩5M ($4K)
2025-11-25	BUY	Market Buy	김종필 Jongpil Kim	vice president	1.0K	₩3,515	+3.8%	₩4M ($2K)
2025-11-25	BUY	Market Buy	김종필 Jongpil Kim	vice president	2.0K	₩3,515	+3.8%	₩7M ($5K)
2025-11-24	BUY	Market Buy	김종필 Jongpil Kim	vice president	999	₩3,485	+4.7%	₩3M ($2K)
2025-11-20	BUY	Market Buy	조기형 Early type	Global Division Head	3.0K	₩3,600	+1.4%	₩11M ($8K)
2025-10-17	BUY	Market Buy	이강익 Lee Kang-ik	vice president	3.0K	₩3,715	-1.8%	₩11M ($8K)
2025-08-19	BUY	기타	임응준 Eungjun Lim	Managing Director	7	₩3,900	-6.4%	₩27K ($19)
2025-08-19	BUY	Market Buy	임응준 Eungjun Lim	Managing Director	1.0K	₩3,900	-6.4%	₩4M ($3K)
2025-08-11	BUY	Market Buy	박종현 Jonghyun Park	Managing Director	1.3K	₩3,845	-5.1%	₩5M ($3K)
2025-08-08	BUY	Market Buy	박종현 Jonghyun Park	Managing Director	1.1K	₩3,885	-6.0%	₩4M ($3K)
2025-08-07	BUY	Market Buy	박종현 Jonghyun Park	Managing Director	500	₩3,885	-6.0%	₩2M ($1K)
2025-08-06	BUY	Market Buy	박종현 Jonghyun Park	Managing Director	1.0K	₩3,895	-6.3%	₩4M ($3K)
2025-08-05	BUY	Market Buy	박종현 Jonghyun Park	Managing Director	1.0K	₩3,870	-5.7%	₩4M ($3K)
2025-07-22	BUY	Market Buy	임응준 Eungjun Lim	Managing Director	4.0K	₩3,925	-7.0%	₩16M ($11K)
2025-03-04	BUY	신규선임	임응준 Eungjun Lim	Managing Director	6.1K	₩3,775	-3.3%	₩23M ($16K)
2025-03-04	BUY	신규선임	임응준 Eungjun Lim	Managing Director	75	₩3,775	-3.3%	₩283K ($197)
2024-09-20	BUY	Market Buy	양찬모 Chanmo Yang	vice president	2.0K	₩5,850	-37.6%	₩12M ($8K)
2024-09-06	BUY	Market Buy	조기형 Early type	Global Division Head	5.7K	₩3,765	-3.0%	₩21M ($15K)
2024-09-03	BUY	Market Buy	박홍권 Park Hong-kwon	Managing Director	1.0K	₩3,595	+1.5%	₩4M ($3K)
2024-09-03	BUY	Market Buy	박홍권 Park Hong-kwon	Managing Director	2.0K	₩3,595	+1.5%	₩7M ($5K)
2024-08-22	BUY	Market Buy	서기식 Seo Ki-sik	Managing Director	2.0K	₩3,625	+0.7%	₩7M ($5K)
2024-08-14	BUY	Market Buy	박찬웅 Park Chan-woong	Managing Director	1.0K	₩3,660	-0.3%	₩4M ($3K)
2024-08-13	BUY	Market Buy	이광재 Gwangjae Lee	Managing Director	1.0K	₩3,670	-0.5%	₩4M ($3K)
2024-08-08	BUY	Market Buy	이경철 Kyeong-cheol Lee	Managing Director	770	₩3,465	+5.3%	₩3M ($2K)
2024-08-08	BUY	Market Buy	이경철 Kyeong-cheol Lee	Managing Director	230	₩3,465	+5.3%	₩797K ($553)

Showing the 50 most recent of 98 filings.

Frequently asked questions

Who has been buying S-Traffic stock?: 18 distinct insiders have filed 80 disclosed insider purchases in S-Traffic (234300), most recently on 2026-07-15. 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 S-Traffic have?: S-Traffic has 80 buy-side and 0 sell-side disclosures on record, covering ₩818M ($568K) in total reported value, spanning 2021-11-25 to 2026-07-15.
Where does StockDrifts get S-Traffic 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 S-Traffic. For how StockDrifts scores these disclosures, see the Korea insider signal tier research, or browse every Korean stock we track.