Who has been buying Sejung stock?

2 distinct insiders have filed 37 disclosed insider purchases in Sejung (039310), most recently on 2026-06-29. 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 Sejung have?

Sejung has 37 buy-side and 0 sell-side disclosures on record, covering ₩5M ($3K) in total reported value, spanning 2024-09-04 to 2026-06-29.

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.

Sejung 039310

Company

세중Sejung

Insiders

Buys

Total Value

₩5M ($3K)

Avg Return

-8.99%

Last Filing

2026-06-29

Sejung (039310) has 37 disclosed insider purchases and 0 disclosed disposals on record, filed by 2 distinct insiders. Together those filings cover ₩5M ($3K) in reported transaction value. The earliest filing StockDrifts holds for Sejung is dated 2024-09-04; the most recent is 2026-06-29. Across these filings the average return since disclosure is -8.99%, 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
2026-07-31	BUY	Market Buy	최석원 Choi Seok-won	Internal director	10.3K	₩1,096	+11.0%	₩11M ($8K)
2026-07-30	BUY	Market Buy	최석원 Choi Seok-won	Internal director	8.2K	₩1,044	+16.6%	₩9M ($6K)
2026-07-30	BUY	Market Buy	안영우 Youngwoo Ahn	Internal director	2.0K	₩1,044	+16.6%	₩2M ($2K)
2026-07-28	BUY	Market Buy	강정규 Kang Jeong-gyu	Managing Director	17.7K	₩1,105	-0.8%	₩20M ($14K)
2026-07-28	BUY	Market Buy	안영우 Youngwoo Ahn	Internal director	6.5K	₩1,105	-0.8%	₩7M ($5K)
2026-07-27	BUY	Market Buy	안영우 Youngwoo Ahn	Internal director	7.9K	₩1,104	-0.7%	₩9M ($6K)
2026-07-24	BUY	Market Buy	정진억 Jeong Jin-eok	Managing Director	15.5K	₩1,136	-3.5%	₩17M ($12K)
2026-07-23	BUY	Market Buy	정진억 Jeong Jin-eok	Managing Director	2.0K	₩1,101	-0.5%	₩2M ($2K)
2026-07-23	BUY	Market Buy	허태진 Taejin Heo	Managing Director	17.6K	₩1,101	-0.5%	₩20M ($14K)
2026-07-22	BUY	Market Buy	박요섭 Park Yo-seop	Managing Director	2.0K	₩1,136	+0.0%	₩2M ($2K)
2026-07-21	BUY	Market Buy	박요섭 Park Yo-seop	Managing Director	18.0K	₩1,158	-1.9%	₩21M ($14K)
2026-07-16	BUY	Market Buy	정구충 Jeong Gu-chung	vice president	19.1K	₩1,132	+0.3%	₩20M ($14K)
2026-06-29	BUY	Market Buy	안영우 Youngwoo Ahn	Internal director	47	-	-	-
2026-06-29	BUY	Market Buy	안영우 Youngwoo Ahn	Internal director	47	-	-	-
2026-06-29	BUY	Market Buy	안영우 Youngwoo Ahn	Internal director	1	-	-	-
2026-06-29	BUY	Market Buy	안영우 Youngwoo Ahn	Internal director	1	-	-	-
2026-06-29	BUY	Market Buy	안영우 Youngwoo Ahn	Internal director	1	-	-	-
2026-06-29	BUY	Market Buy	안영우 Youngwoo Ahn	Internal director	1	-	-	-
2026-06-29	BUY	Market Buy	안영우 Youngwoo Ahn	Internal director	6	-	-	-
2026-06-29	BUY	Market Buy	안영우 Youngwoo Ahn	Internal director	36	-	-	-
2026-06-29	BUY	Market Buy	안영우 Youngwoo Ahn	Internal director	60	-	-	-
2026-06-29	BUY	Market Buy	안영우 Youngwoo Ahn	Internal director	35	-	-	-
2026-06-29	BUY	Market Buy	안영우 Youngwoo Ahn	Internal director	50	-	-	-
2026-06-29	BUY	Market Buy	안영우 Youngwoo Ahn	Internal director	2.2K	-	-	-
2026-06-29	BUY	Market Buy	안영우 Youngwoo Ahn	Internal director	35	-	-	-
2026-06-29	BUY	Market Buy	안영우 Youngwoo Ahn	Internal director	12	-	-	-
2026-06-29	BUY	Market Buy	안영우 Youngwoo Ahn	Internal director	76	-	-	-
2026-06-29	BUY	Market Buy	안영우 Youngwoo Ahn	Internal director	36	-	-	-
2026-06-29	BUY	Market Buy	안영우 Youngwoo Ahn	Internal director	52	-	-	-
2026-06-29	BUY	Market Buy	안영우 Youngwoo Ahn	Internal director	182	-	-	-
2026-06-29	BUY	Market Buy	안영우 Youngwoo Ahn	Internal director	46	-	-	-
2026-06-29	BUY	Market Buy	안영우 Youngwoo Ahn	Internal director	16	-	-	-
2026-06-29	BUY	Market Buy	안영우 Youngwoo Ahn	Internal director	189	-	-	-
2026-06-29	BUY	Market Buy	안영우 Youngwoo Ahn	Internal director	131	-	-	-
2026-06-29	BUY	Market Buy	안영우 Youngwoo Ahn	Internal director	438	-	-	-
2026-06-29	BUY	Market Buy	안영우 Youngwoo Ahn	Internal director	204	-	-	-
2026-06-29	BUY	Market Buy	안영우 Youngwoo Ahn	Internal director	1.3K	-	-	-
2026-06-29	BUY	Market Buy	안영우 Youngwoo Ahn	Internal director	22	-	-	-
2026-06-22	BUY	Market Buy	안영우 Youngwoo Ahn	Internal director	970	-	-	-
2026-06-22	BUY	Market Buy	안영우 Youngwoo Ahn	Internal director	133	-	-	-
2026-06-08	BUY	Market Buy	안영우 Youngwoo Ahn	Internal director	101	-	-	-
2026-06-08	BUY	Market Buy	안영우 Youngwoo Ahn	Internal director	222	-	-	-
2026-06-08	BUY	Market Buy	안영우 Youngwoo Ahn	Internal director	566	-	-	-
2026-06-08	BUY	Market Buy	안영우 Youngwoo Ahn	Internal director	917	-	-	-
2026-06-08	BUY	Market Buy	안영우 Youngwoo Ahn	Internal director	114	-	-	-
2026-06-08	BUY	Market Buy	안영우 Youngwoo Ahn	Internal director	24	-	-	-
2026-06-08	BUY	Market Buy	안영우 Youngwoo Ahn	Internal director	275	-	-	-
2024-09-04	BUY	Market Buy	천호전 Cheonhojeon	Internal director	2.1K	₩1,557	-9.0%	₩3M ($2K)
2024-09-04	BUY	Market Buy	천호전 Cheonhojeon	Internal director	912	₩1,557	-9.0%	₩1M ($986)

Frequently asked questions

Who has been buying Sejung stock?: 2 distinct insiders have filed 37 disclosed insider purchases in Sejung (039310), most recently on 2026-06-29. 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 Sejung have?: Sejung has 37 buy-side and 0 sell-side disclosures on record, covering ₩5M ($3K) in total reported value, spanning 2024-09-04 to 2026-06-29.
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.