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Haesung Optics Co., Ltd. Stock: price and insider trades · South Korea

해성옵틱스

KR·Mcap ₩56.4BTechnology

No insider purchase over the last 90 days. The latest, by 코아스, was filed 30 Dec 2025.

Haesung Optics Co., Ltd.: what insiders have been doing

This page follows insider dealings at Haesung Optics Co., Ltd. as filed with DART (FSS), a company from the Technology sector. From 2 November 2025 to 2 November 2026, the disclosure feed for Haesung Optics Co., Ltd. logged 7 filings by 5 insiders.

Purchases and sales both appear in the filings: 2 purchases (2 insiders) and 3 sales (2 insiders). No amount is published for 5 filings, which the totals therefore leave out. A purchase on the market is a deliberate choice to commit personal money, which is why it draws more attention than a grant.

With 7 filings in twelve months, the company is in line with the median of 7 filings across the 2,655 companies we follow on the same exchange. The full history, which starts in 2021, counts 22 purchases against 12 sales.

The clock since the last published purchase (30 December 2025) now reads 315 days. Typically, a trade is published a median of 6 days after it takes place. This delay matters because a trade only becomes useful information once it is public. Keep in mind that insiders sell for many reasons unrelated to the outlook, from tax bills to estate planning.

Elsewhere in the same sector, our signals recently picked up insider purchases at Basler Aktiengesellschaft and Lime Technologies AB (publ). Every figure here comes from the filings published by DART (FSS) and describes the past, not future prices; it is not investment advice.

Insider Decl.
49
Thresholds
n/a
Buy Volume
€36M
22 ops. · all time
Sell Volume
€8M
12 ops. · all time

Who traded when

BuySale
안광호1 buy2 sales
상상인저축은행2 sales
이스페이스인베스텍2 sales
이을성2 sales
제이케이투자조합1호1 buy
코아스1 buy

+1 other insider

Fundamental score
Ranked 26,209 of 26,911 companies
11.3
score / 100
Value
9
Quality
14
FCF yld-37%
Earn yld-16%
EV/EBITDA·
ROE-14%
Gross mgn7.5%
Net mgn-5.4%
Debt/EBITDA·
Pillars2/3

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

Financial data

as of FY 2025

FY ended December 2025 · cache

₩953
Analyst consensus
·
Income statement
Revenue₩160.3B
Gross profit₩12B7% margin
EBITDA-₩2.5B-2% margin
Net income-₩8.6B-0.8% margin
Valuation
Beta1.17
Balance sheet & cash
Market cap₩56.4B
Total debt₩46.7B
Free Cash Flow-₩19.8B
Debt / Equity152%
Profitability & ownership
ROE-14.0%
ROA-0.5%
% insiders30.2%
% institutions0.0%
Last declaration on 24 June 2026
Declarations50 total
  • Other
    Other(filed)
    0DART
  • ●
    Related company / holdingExecutives(filed)
    0DART
    KRXDART:20260623000425
  • ●
    Executives
    Executives(filed)
    0DART
  • ▼
    Executives
    €608kest.0DART
    1,160,000 sharesKRXDART:20260126000400
  • ▼
    Executives
    €237kest.0DART
    564,925 sharesKRXDART:20260120000024
  • ▼
    Executives
    €2.1Mest.0DART
    6,400,000 sharesKRXDART:20260106000182
  • ▲
    Executives
    €2.0Mest.0DART
    6,000,000 sharesKRXDART:20251230000204
    Canonical exit: 24 Mar 2026 (T+90)
  • ▲
    Executives
    €568kest.0DART
    1,695,939 sharesKRXDART:20251224000703
    Canonical exit: 24 Mar 2026 (T+90)
  • ▼
    Related company / holdingExecutives
    €819kest.0DART
    2,383,221 sharesKRXDART:20251002000549
  • ▼
    대량보유자Executives
    €698kest.0DART
    2,000,000 sharesKRXDART:20250709000439
  • ▲
    Related company / holdingExecutives
    €926kest.0DART
    2,657,297 sharesKRXDART:20250704000168
    Canonical exit: 25 Sept 2025 (T+90)
  • ▲
    Related company / holdingExecutives
    €1.8Mest.0DART
    3,700,000 sharesKRXDART:20250522000365
    Canonical exit: 14 Aug 2025 (T+90)
  • ▼
    대량보유자Executives
    €323kest.0DART
    721,709 sharesKRXDART:20250507000265
  • ▼
    Related company / holdingExecutives
    €337kest.0DART
    527,139 sharesKRXDART:20250110000855
  • ▼
    Executives(filed)
    €162kest.0DART
    271,198 sharesKRXDART:20241205000205
  • ▲
    Executives
    €2.0Mest.0DART
    2,175,489 sharesKRXDART:20240711000150
    Canonical exit: 29 Sept 2024 (T+90)
  • ▲
    Related company / holdingExecutives
    €2.9Mest.0DART
    2,910,360 sharesKRXDART:20240528000397
    Canonical exit: 19 Aug 2024 (T+90)
  • ▲
    대량보유자Executives
    €2.3Mest.0DART
    1,752,336 sharesKRXDART:20240216000362
    Canonical exit: 7 May 2024 (T+90)
  • ▼
    대량보유자Executives
    0DART
    8,650,189 sharesKRXDART:20240112000107
  • ▼
    대량보유자Executives
    0DART
    14,964,312 sharesKRXDART:20240110000727
  • ▼
    대량보유자Executives
    0DART
    24,000,000 sharesKRXDART:20240109000187
  • ▲
    Related company / holdingExecutives
    €3.9Mest.0DART
    2,910,360 sharesKRXDART:20231027000402
    Canonical exit: 18 Jan 2024 (T+90)
  • ▲
    Related company / holdingExecutives
    €5.1Mest.0DART
    2,910,360 sharesKRXDART:20230511000001
    Canonical exit: 2 Jul 2023 (T+90)
  • ▲
    Related company / holdingExecutives
    €5.5Mest.0DART
    2,910,360 sharesKRXDART:20230504000429
    Canonical exit: 1 Aug 2023 (T+90)
  • ▼
    대량보유자Executives(filed)
    €2.5Mest.0DART
    1,369,691 sharesKRXDART:20230106000137

25 of 50 declarations

About Haesung Optics Co., Ltd.

해성옵틱스 is a technology company listed on the XKRX market. It specializes in the manufacturing of optical devices and related optical solutions.

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