No insider purchase over the last 90 days. The latest, by 이우석, was filed 20 May 2026.
STI Co., Ltd.: what insiders have been doing
Every trade that managers of STI Co., Ltd. disclose to DART (FSS) is tracked on this page. The company sits in the Technology sector. In the past year (31 October 2025 to 31 October 2026), 8 filings came from 6 insiders.
Open-market activity splits into 4 purchases and 3 sales; 3 insiders sit on the buying side and 3 insiders on the selling side. The totals do not cover 7 filings with an undisclosed amount. Open-market purchases are the filings investors watch most closely, because the insider pays for the shares out of pocket. Among those who bought: 1 chief executive.
The clock since the last published purchase (20 May 2026) now reads 174 days. Between a trade and the moment it shows up on DART (FSS), the median delay is 27 days. The shorter that gap, the sooner other investors can see what insiders have done.
Compared with its exchange (2,655 companies, median 7 filings), a count of 8 filings is above the norm. The full history, which starts in 2021, counts 13 purchases against 6 sales.
In the same sector, recent insider purchases at Basler Aktiengesellschaft and Lime Technologies AB (publ) also feature in our signals. Source: insider filings from DART (FSS). Past trades are no guide to future returns.
Who traded when
BuySaleThis 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
- 184,646 sharesKRXDART:20260701000458
- 92,000 sharesKRXDART:20260528000375
- 5,000 sharesShareKRXDART:20260520000150Canonical exit: 18 Aug 2026 (T+90)
- 178,288 sharesKRXDART:20260504000289
- ●Executives0DART
- 346,813 sharesKRXDART:20260106000187Canonical exit: 9 Mar 2026 (T+90)
- 346,813 sharesKRXDART:20260105000387Canonical exit: 9 Mar 2026 (T+90)
- 160,862 sharesKRXDART:20260102000440Canonical exit: 29 Mar 2026 (T+90)
- 160,640 sharesKRXDART:20250702000175
- 22,908 sharesKRXDART:20250106000191Canonical exit: 9 Feb 2025 (T+90)
- 228,709 sharesKRXDART:20241002000008Canonical exit: 1 Dec 2024 (T+90)
- 49,600 sharesKRXDART:20240816000128Canonical exit: 12 Nov 2024 (T+90)
- 280,115 sharesKRXDART:20240801000025
- 187,713 sharesKRXDART:20240702000169Canonical exit: 16 Jul 2024 (T+90)
- 240,411 sharesKRXDART:20240701000532Canonical exit: 11 Sept 2024 (T+90)
- 71,173 sharesKRXDART:20240215001195Canonical exit: 13 May 2024 (T+90)
- ●Executives0DART
- 240,411 sharesKRXDART:20221011000290Canonical exit: 9 Jan 2023 (T+90)
- 240,411 sharesKRXDART:20220711000504Canonical exit: 9 Oct 2022 (T+90)
- 16,204 shares@ ₩15,047.00100.0% of flowShareKRXDART:20220630000721
- 240,411 sharesKRXDART:20220411002716Canonical exit: 10 Jul 2022 (T+90)
- ●Executives0DART
- ●Executives0DART
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About STI Co., Ltd.
에스티아이 is a technology company listed on the XKRX market. It specializes in developing innovative solutions for various industrial sectors.
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