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Jeong Moon Information. Co., Ltd Stock: price and insider trades · South Korea

제이엠아이

KR·Mcap ₩24.8BTechnology

No insider purchase over the last 90 days. The latest, by 정광훈, was filed 11 Aug 2026.

Jeong Moon Information. Co., Ltd: what insiders have been doing

Jeong Moon Information. Co., Ltd is a Technology company. Its directors and officers file their transactions with DART (FSS). Between 31 October 2025 and 31 October 2026, 2 insiders published 14 filings.

The flow runs one way only: 2 insiders bought (13 purchases totalling €432k) and nobody sold on the market. The totals exclude 8 filings filed without an amount. Buying on the open market means paying the going price with one's own funds, a different act from receiving shares as pay. The largest single trade was a purchase of €192k by 정광훈, published on 29 April 2026, equal to 1.2% of the market capitalisation. Among those who bought: 1 chief executive.

The latest purchase dates back some time: it was published 91 days ago, on 11 August 2026. Typically, a trade is published a median of 7 days after it takes place. This delay matters because a trade only becomes useful information once it is public.

With 14 filings in twelve months, the company is more active than the median of 7 filings across the 2,655 companies we follow on the same exchange. The full history, which starts in 2021, counts 25 purchases against no sales.

Elsewhere in the same sector, our signals recently picked up insider purchases at Basler Aktiengesellschaft and Lime Technologies AB (publ). These figures are compiled from regulatory filings published by DART (FSS). They describe what insiders did and are not a recommendation.

Insider Decl.
29
Thresholds
n/a
Buy Volume
€4M
25 ops. · all time
Sell Volume
n/a
n/a

Who traded when

BuySale
정광훈8 buys
제이엠티5 buys

Since the insiders bought

  • Filed 28 May 2026 · 166 days ago · €109k
    -9.8%
    Entry ₩864 · Close 29 Oct 2026 ₩779
  • Filed 08 May 2026 · 186 days ago · €84k
    -22.0%
    Entry ₩999 · Close 29 Oct 2026 ₩779

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.

Fundamental score
Ranked 9,580 of 26,911 companies
58.7
score / 100
Value
70
Quality
47
FCF yld-4.2%
Earn yld14%
EV/EBITDA4.1x
ROE11%
Gross mgn13%
Net mgn3.8%
Debt/EBITDA1.4x
Pillars2/3

Transparent value + quality ranking, distinct from the insider signal.

Financial data

as of FY 2025

FY ended December 2025 · cache

₩779
Analyst consensus
·
Income statement
Revenue₩89.8B
Gross profit₩11.8B13% margin
EBITDA₩9.4B10% margin
Net income₩3.4B6.1% margin
Valuation
Beta0.56
Balance sheet & cash
Market cap₩24.8B
Total debt₩13.3B
Free Cash Flow-₩1B
Debt / Equity19%
Profitability & ownership
ROE11.4%
ROA3.5%
% insiders47.4%
% institutions0.0%
Last declaration on 11 August 2026
Declarations33 total
  • Other
    Other(filed)
    0DART
  • Other
    Other(filed)
    0DART
  • Other
    Other(filed)
    0DART
  • ▲
    대표이사Executives(filed)
    €5,601est.0DART
    9,751 sharesShareKRXDART:20260811000012
    Canonical exit: 9 Nov 2026 (T+90)
  • Other
    Other(filed)
    0DART
  • ▲
    대표이사Executives(filed)
    €225kest.0DART
    399,051 sharesShareKRXDART:20260804000403
    Canonical exit: 2 Nov 2026 (T+90)
  • ●
    Executives(filed)
    0DART
    ShareKRXDART:20260626000020
  • ▲
    Executives
    €109kest.0DART
    213,830 sharesKRXDART:20260528000952
    Canonical exit: 25 Aug 2026 (T+90)
  • ▲
    대표이사Executives
    145M KRW25DART
    138,630 shares@ ₩1,045.96780.53% mcap26.7% of flowShareKRXDART:20260508000038
    Canonical exit: 29 Jul 2026 (T+90)
  • ▲
    대표이사Executives
    333M KRW28DART
    312,635 shares@ ₩1,064.65041.22% mcap61.1% of flowShareKRXDART:20260429000009
    Canonical exit: 21 Jul 2026 (T+90)
  • ▲
    Executives
    €217kest.0DART
    438,346 sharesKRXDART:20260429000007
    Canonical exit: 21 Jul 2026 (T+90)
  • ▲
    대표이사/회장Executives
    0DART
    ShareKRXDART:20260323000532
    Canonical exit: 21 Jun 2026 (T+90)
  • ▲
    대표이사Executives
    121M KRW28DART
    134,535 shares@ ₩901.39880.44% mcap59.8% of flowShareKRXDART:20260320001031
    Canonical exit: 11 Jun 2026 (T+90)
  • ▲
    Executives
    €165kest.0DART
    278,435 sharesKRXDART:20260320000925
    Canonical exit: 18 Jun 2026 (T+90)
  • ▲
    대표이사Executives
    65M KRW23DART
    74,653 shares@ ₩873.72510.24% mcap12.2% of flowShareKRXDART:20260312000941
    Canonical exit: 3 Jun 2026 (T+90)
  • ▲
    대표이사/회장Executives
    81M KRW26DART
    90,812 shares@ ₩891.12510.30% mcap40.2% of flowShareKRXDART:20260304001245
    Canonical exit: 25 May 2026 (T+90)
  • ▲
    Executives
    €82kest.0DART
    160,658 sharesKRXDART:20260227007843
    Canonical exit: 21 May 2026 (T+90)
  • ▲
    Executives
    €295kest.0DART
    554,740 sharesKRXDART:20260130000542
    Canonical exit: 27 Apr 2026 (T+90)
  • ▲
    Executives
    €245kest.0DART
    384,617 sharesKRXDART:20240830001824
    Canonical exit: 21 Nov 2024 (T+90)
  • ▲
    Executives
    €263kest.0DART
    444,137 sharesKRXDART:20240618000340
    Canonical exit: 12 Sept 2024 (T+90)
  • ▲
    Executives
    €292kest.0DART
    444,137 sharesKRXDART:20240510000891
    Canonical exit: 6 Aug 2024 (T+90)
  • ▲
    Executives
    €292kest.0DART
    444,137 sharesKRXDART:20240510000881
    Canonical exit: 8 Aug 2024 (T+90)
  • ▲
    Executives(filed)
    €383kest.0DART
    444,137 sharesKRXDART:20230419000556
    Canonical exit: 18 Jul 2023 (T+90)
  • ▲
    Executives
    €383kest.0DART
    444,137 sharesKRXDART:20230419000550
    Canonical exit: 18 Jul 2023 (T+90)
  • ▲
    대표이사/회장Executives(filed)
    0DART
    ShareKRXDART:20230419000551
    Canonical exit: 18 Jul 2023 (T+90)

25 of 33 declarations

About Jeong Moon Information. Co., Ltd

제이엠아이 is a technology company listed on the XKRX market. It specializes in developing innovative solutions for various sectors.

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