No insider purchase over the last 90 days. The latest, by 서성석, was filed 28 May 2026.
Who traded when
BuySaleSince the insiders bought
- +19.3%Entry ₩18,400 · Close 30 Oct 2026 ₩21,950
- +38.1%Entry ₩15,900 · Close 30 Oct 2026 ₩21,950
- +13.0%Entry ₩8,970 · Close at T+365 ₩10,140
Entry is the close on the day after publication, the first price a reader could act on. Prices in the listing currency. Past moves are not a forecast.
Transparent value + quality ranking, distinct from the insider signal.
Financial data
as of FY 2025FY ended December 2025 · cache
- Other0DART
- Other0DART
- ●Executives0DART
- 843,340 sharesShareKRXDART:20260528000675
- 3,400 sharesKRXDART:20260527000620Canonical exit: 18 Aug 2026 (T+90)
- 38,258 sharesKRXDART:20260430001766Canonical exit: 28 Jul 2026 (T+90)
- ShareKRXDART:20260403003108Canonical exit: 3 Jul 2026 (T+90)
- ShareKRXDART:20260403003062Canonical exit: 3 Jul 2026 (T+90)
- ShareKRXDART:20260403002889Canonical exit: 3 Jul 2026 (T+90)
- ●Executives0DART
- 634,771 sharesKRXDART:20260127000372Canonical exit: 18 Jan 2026 (T+90)
- 105 sharesShareKRXDART:20260107000587Canonical exit: 7 Apr 2026 (T+90)
- 34,917 sharesShareKRXDART:20251105000158Canonical exit: 3 Feb 2026 (T+90)
- 95,121 sharesKRXDART:20251105000153Canonical exit: 3 Feb 2026 (T+90)
- 60,204 sharesShareKRXDART:20251028000320Canonical exit: 26 Jan 2026 (T+90)
- ●Executives0DART
- 36,852 sharesShareKRXDART:20250411002838Canonical exit: 10 Jul 2025 (T+90)
- ●Executives0DART
- 356 sharesShareKRXDART:20250108000290Canonical exit: 8 Apr 2025 (T+90)
- 0KRXDART:20240904000299
- 0KRXDART:20240805000287
- 15,742 sharesKRXDART:20240531002399Canonical exit: 25 Aug 2024 (T+90)
- ●Executives0DART
- ●Executives0DART
- 15,742 sharesKRXDART:20231115000307Canonical exit: 8 Feb 2024 (T+90)
25 of 61 declarations
About Cosmax BTI, Inc.
Two purchases carry most of the amounts at 코스맥스비티아이 (Cosmax BTI, Inc.): EUR 7,288,624 for 이병만 and EUR 7,043,285 for 이병주, both recorded in 2023, or EUR 14.3 million for these two purchases alone. Of the 44 purchases in the record, no other has an amount.
The main filer is 서성석, filed as 대량보유자: 31 of the 59 filings, with 26 purchases and one sale. 서미숙 (상무보) signs 13 purchases, 리캐피탈 signs 2 and 서윤원 (실장) one. The company itself files 8 with no trade. Purchases make up 96% of open-market trades, against 2 sales. Between April 29 and May 20, 2026, 2 distinct filers bought.
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The filings, published from March 5, 2021 to June 26, 2026, go from 12 in 2021 to 16 in 2023, then 5 in 2024, 7 in 2025 and 10 in 2026. The South Korean company is valued at KRW 213.1 billion, and its 9 filers hold 68.9% of it. Over the last twelve months there are 13 filings, of which 10 purchases and 1 sale. Publication takes a median of 5 days.
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