Stock Trading Canary

Built: 2026-10-19T16:02:49+00:00 · 中文

← South Korea

SOUTH KOREA · OPENDART

ATON Inc.

아톤 · 158430 · KOSDAQ · Technology · Software—Application

Score

69.4

Rank 128 of 745 · KR-v1 · as of 2026-10-18

Buyers 35%60
Size 25%92
Role 20%65
Recency 10%23
Conviction 10%100

Insider timeline

3 insiders bought within 2 days, 21 Jul to 22 Jul: 2 CEO / chair, 1 Executive. The share closed at 3,740.00 on the first of those days and at 5,590.00 most recently (+49.5%).

Several insiders within 15 days: 2026-07-21 – 2026-07-22Jong-seo, KimJong-seo, KimChief Executive OfficerCEO / chairHaam sung jinHaam sung jinMember of the executive committeeExecutiveWoo Gil SooWoo Gil SooChief Executive OfficerCEO / chair2026-07-16 · Jong-seo, Kim · purchase · 13,485,500 KRW2026-07-20 · Haam sung jin · purchase · 33,919,128 KRW2026-07-20 · Jong-seo, Kim · purchase · 298,800,000 KRW2026-07-20 · Woo Gil Soo · purchase · 45,374,000 KRW2026-07-21 · Haam sung jin · purchase · 14,916,880 KRW2026-07-21 · Jong-seo, Kim · purchase · 299,920,000 KRW2026-07-21 · Woo Gil Soo · purchase · 22,608,300 KRW2026-07-22 · Jong-seo, Kim · purchase · 299,191,500 KRW2026-07-22 · Woo Gil Soo · purchase · 10,431,330 KRWMayJunJulAugSepOct

Tap an item for what it means.

●A purchase: the bigger the dot, the more was bought

Each dot is one insider's purchases on one day. The dot's area follows the amount: the largest purchase here gets the largest dot. Hold the pointer over a dot to see the date and the amount.

▮Purple band: several insiders bought within 15 days

The band marks the stretch with the most different buyers: at most 15 days long and at least two people. Here it is 21 Jul – 22 Jul, with 3 insiders. Only the strongest stretch is marked. Several people deciding the same thing is harder to explain by one person's private reasons, but insiders often buy together just after a closed period ends, so compare it with the grey weekly bars.

Blue line: this share's price, −40.2% over these six months

The closing price of each day, from 9,350.00 on 2026-04-21 to 5,590.00 on 2026-10-16. The line has no scale; read it for high and low: a dot on a low stretch was bought cheaply, a dot on a high stretch was not.

Dashed line: the typical stock on the same exchange, −31.9%

Taken from the 1525 other stocks on the same exchange that this site holds prices for. Each is measured from the first day of the window, and every day the middle one is drawn. It starts where the blue line starts, so the gap between the two is the difference: this share −40.2%, the typical one −31.9%, 8.3 points behind. It is not an index and not a comparison within one industry.

This company: insiders buying per month, last 12 months

Nov
Dec
Jan
Feb
Mar
Apr
May
Jun
3Jul
Aug
Sep
Oct

Darker bars are inside the 180-day window above.

Who traded

InsiderRolePurchasesSalesBoughtFirst purchaseShare price since
Jong-seo, KimCEO / chair4—911.4M KRW2026-07-16+46.7%
Haam sung jinExecutive2—48.8M KRW2026-07-20+51.9%
Woo Gil SooCEO / chair3—78.4M KRW2026-07-20+51.9%

Insiders' buying price vs the latest close

Insiders paid 3,790.34 KRW a share on average (9 purchase lines, 3 buyers, 2026-07-16 – 2026-07-22). The close on 2026-10-16 was 47.5% above that price.

The latest purchase (2026-07-22) was at 3,907.90 KRW; the close was 43.0% above that price.

Prices paid are weighted by shares and taken from the filings; dividends are not counted. Not scored.

Insider trades on the exchange

Purchases and sales on the exchange in the last 12 months. The filing gives the settlement date; the trade date is two trading days earlier.

Trade dateInsiderRoleTradeSharesPriceValueFiling
2026-07-22Woo Gil SooCEOBought on the exchange2,730₩3,821₩10.4MDART ↗
2026-07-22Jong-seo, KimCEOBought on the exchange76,500₩3,911₩299.2MDART ↗
2026-07-21Haam sung jinDivision headBought on the exchange4,048₩3,685₩14.9MDART ↗
2026-07-21Woo Gil SooCEOBought on the exchange6,045₩3,740₩22.6MDART ↗
2026-07-21Jong-seo, KimCEOBought on the exchange80,000₩3,749₩299.9MDART ↗
2026-07-20Haam sung jinDivision headBought on the exchange8,952₩3,789₩33.9MDART ↗
2026-07-20Woo Gil SooCEOBought on the exchange12,250₩3,704₩45.4MDART ↗
2026-07-20Jong-seo, KimCEOBought on the exchange80,000₩3,735₩298.8MDART ↗
2026-07-16Jong-seo, KimCEOBought on the exchange3,500₩3,853₩13.5MDART ↗
Other changes in holdings · 2

Option exercises, grants, new shares, inheritance, gifts, off-exchange trades and trades by companies and funds. Not counted in the score.

DateInsiderRoleReasonSharesFiling
2026-05-01YANG SUNG JINManaging directorNew appointment(+)17,005DART ↗
2025-07-28Hong Jae yongManaging directorStock options(+)2,500DART ↗