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RF Materials Co., Ltd. Stock: price and insider trades · South Korea
RF머트리얼즈
6 insiders bought €41.8M of shares over the last 90 days, the latest filed 29 Jul 2026.
RF Materials Co., Ltd.: what insiders have been doing
RF Materials Co., Ltd. belongs to the Technology sector. Filings by its managers are published through DART (FSS). In the past year (18 October 2025 to 18 October 2026), 35 filings came from 11 insiders.
Purchases and sales both appear in the filings: 19 purchases (9 insiders) and 14 sales (7 insiders). No amount is published for 33 filings, which the totals therefore leave out. Unlike grants, an open-market purchase is paid for by the insider, at the market price. Those buying include 3 major shareholders, 1 senior executive and 1 chief executive.
Across the 2,648 companies tracked on its exchange, the median is 7 filings; at 35 filings, this issuer sits above that mark. Since 2021, the database holds 31 purchases and 17 sales by insiders of the company.
The last purchase on record was published on 29 July 2026, which is 81 days ago. Filings reach the DART (FSS) feed a median of 6 days after the trade. That lag is the time during which only the insider knows about the trade.
In the same sector, recent insider purchases at Gitlab Inc. and Baozun Inc. also feature in our signals. 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.
90
Thresholds
n/a
Buy Volume
€136M
31 ops. · all time
Sell Volume
€30M
17 ops. · all time
Who traded when
BuySale김시남3 buys2 sales
김종기3 buys2 sales
김주현2 buys3 sales
남동우3 buys2 sales
한기우2 buys3 sales
Rfhic3 buys1 sale
+3 other insiders
Since the insiders bought
- +104.1%Entry ₩21,925 · Close 16 Oct 2026 ₩44,750
- +39.2%Entry ₩65,000 · Close at T+90 ₩90,500
- +30.3%Entry ₩66,600 · Close at T+90 ₩86,800
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.
Fundamental score
Ranked 12,022 of 24,148 companies
51.7
score / 100
Value39
Quality64
FCF yld0.5%
Earn yld0.9%
EV/EBITDA·
ROE16%
Gross mgn28%
Net mgn11%
Debt/EBITDA1.2x
Pillars2/3
Transparent value + quality ranking, distinct from the insider signal.
Financial data
as of FY 2025FY ended December 2025 · cache
₩44,750
Analyst consensus
Income statement
Revenue₩64.1B
Gross profit₩17.9B28% margin
EBITDA₩12.3B19% margin
Net income₩7.1B14.9% margin
Valuation
Beta1.46
Balance sheet & cash
Market cap₩804.9B
Total debt₩15.4B
Free Cash Flow₩4.2B
Debt / Equity11%
Profitability & ownership
ROE16.3%
ROA6.0%
% insiders46.8%
% institutions3.1%
Last declaration on 17 September 2026
Declarations96 total
Other
Other
Other
Other
Other
Other
457,516 sharesKRXDART:20260616000143
Canonical exit: 14 Sept 2026 (T+90)
25 of 96 declarations
About RF Materials Co., Ltd.
RF머트리얼즈 is a technology company listed on the XKRX. It specializes in the development and manufacturing of advanced materials for various industrial applications.
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