No insider purchase over the last 90 days. The latest, by 조형섭, was filed 22 May 2026.
Who traded when
BuySaleSince the insiders bought
- +8.0%Entry ₩58,500 · Close 04 Nov 2026 ₩63,200
- +8.0%Entry ₩58,500 · Close 04 Nov 2026 ₩63,200
- +41.2%Entry ₩44,750 · Close 04 Nov 2026 ₩63,200
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.
This score ranks the purchase within its own market. A position size is suggested only on the venues of the backtested strategy universe; elsewhere, signals stay on watch. Not investment advice.
Transparent value + quality ranking, distinct from the insider signal.
Financial data
as of FY 2025FY ended December 2025 · cache
- Other0DART
- Other0DART
- Other0DART
- Other0DART
- Other0DART
- Other0DART
- Other0DART
- Other0DART
- Other0DART
- ●Executives0DART
- ●Executives0DART
- ●Executives0DART
- 36,859 sharesKRXDART:20260522000113Canonical exit: 13 Aug 2026 (T+90)
- 3,922 sharesShareKRXDART:20260522000119Canonical exit: 20 Aug 2026 (T+90)
- 32,937 sharesShareKRXDART:20260522000116Canonical exit: 20 Aug 2026 (T+90)
- 29,780 shares@ ₩44,330.000.049% mcap100.0% of flowShareKRXDART:20260504000397Canonical exit: 26 Jul 2026 (T+90)
- 282,653 shares0.60% mcap59.2% of flowKRXDART:20260504000386Canonical exit: 26 Jul 2026 (T+90)
- 250,099 shares@ ₩44,330.000.41% mcap40.8% of flowShareKRXDART:20260504000389Canonical exit: 26 Jul 2026 (T+90)
- 395,703 shares0.61% mcap100.0% of flowKRXDART:20260409002767
- 424,674 shares0.70% mcap100.0% of flowKRXDART:20260403001699Canonical exit: 29 Jun 2026 (T+90)
- 979,103 shares1.35% mcap100.0% of flowKRXDART:20260304001462Canonical exit: 3 May 2026 (T+90)
- ●Executives0DART
- 10,000 sharesShareKRXDART:20260210000747
- 1,787,108 sharesKRXDART:20260204000384Canonical exit: 28 Apr 2026 (T+90)
- 36,357 sharesKRXDART:20260108000162Canonical exit: 25 Jan 2026 (T+90)
25 of 45 declarations
About Jeju Semiconductor Corp.
Jeju Semiconductor Corp. (제주반도체) has 16 of its 36 filings in 2026, published between February 24, 2021 and July 7, 2026 by 8 filers. The largest purchase, EUR 20.9 million, is filed under 삼성자산운용 on February 2, 2026. Next come two purchases by 박성식 (대표이사): EUR 9.4 million on March 31, 2026 and EUR 9.3 million on April 27, 2026. The only sale with an amount, EUR 9.5 million, is 한국증권금융's on January 7, 2026.
Five of the 11 purchases carry an amount, EUR 46.7 million in all, with a median of EUR 9.3 million. 박성식 made 13 filings, 5 purchases and 5 sales, and 조형섭, also 대표이사, made 7, 2 purchases and 1 sale. The record has 11 purchases and 9 sales, 55% purchases, and 6 cluster purchase filings.
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Insiders at this technology company, valued at KRW 2.3 trillion, filed 4 times a year from 2021 to 2023, then 5 in 2024 and 3 in 2025. Over the last 12 months there are 16 filings, 10 purchases and 2 sales. Overall median delay: 6 days.
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