SOUTH KOREA · OPENDART
CHOONG ANG VACCINE LABORATORY
중앙백신 · 072020 · KOSDAQ · Healthcare · Drug Manufacturers—Specialty & Generic
Score
75.0
Insider timeline
2 insiders bought within 2 days, 23 Apr to 24 Apr: 1 Executive, 1 CEO / chair. 2 more bought afterwards. The share closed at 9,800.00 on the first of those days and at 9,000.00 most recently (−8.2%).
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 23 Apr – 24 Apr, with 2 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, −7.0% over these six months
The closing price of each day, from 9,680.00 on 2026-04-21 to 9,000.00 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 −7.0%, the typical one −31.9%, 24.9 points ahead. It is not an index and not a comparison within one industry.
This company: insiders buying per month, last 12 months
Darker bars are inside the 180-day window above.
Who traded
| Insider | Role | Purchases | Sales | Bought | First purchase | Share price since |
|---|---|---|---|---|---|---|
| Yoon Seok In | CEO / chair | 2 | — | 130.7M KRW | 2026-04-22 | −7.5% |
| Kim Eun Hee | Executive | 2 | — | 303.6M KRW | 2026-04-23 | −8.2% |
| Yoon In Joong | CEO / chair | 1 | — | 102.2M KRW | 2026-06-08 | −2.8% |
| Shin Yeong-hak | Board member | 1 | — | 44.4bn KRW | 2026-07-30 | −0.2% |
Insiders' buying price vs the latest close
Insiders paid 9,664.53 KRW a share on average (5 purchase lines, 3 buyers, 2026-04-22 – 2026-06-08). The close on 2026-10-16 was 6.9% below that price.
The latest purchase (2026-06-08) was at 9,289.00 KRW; the close was 3.1% below that price.
Prices paid are weighted by shares and taken from the filings; dividends are not counted. Not scored. 1 more purchase line could not be compared with the share price and is left out.
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 date | Insider | Role | Trade | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| 2026-07-30 | Shin Yeong-hak | Director | Bought on the exchange | 2,195 | ₩20,215,950 | ₩44.4B | DART ↗ |
| 2026-06-08 | Yoon In Joong | CEO | Bought on the exchange | 11,000 | ₩9,289 | ₩102.2M | DART ↗ |
| 2026-04-24 | Kim Eun Hee | Managing director | Bought on the exchange | 6,177 | ₩9,869 | ₩61.0M | DART ↗ |
| 2026-04-23 | Kim Eun Hee | Managing director | Bought on the exchange | 24,823 | ₩9,776 | ₩242.7M | DART ↗ |
| 2026-04-23 | Yoon Seok In | CEO | Bought on the exchange | 3,261 | ₩9,694 | ₩31.6M | DART ↗ |
| 2026-04-22 | Yoon Seok In | CEO | Bought on the exchange | 10,254 | ₩9,665 | ₩99.1M | DART ↗ |
Other changes in holdings · 1
Option exercises, grants, new shares, inheritance, gifts, off-exchange trades and trades by companies and funds. Not counted in the score.
| Date | Insider | Role | Reason | Shares | Filing |
|---|---|---|---|---|---|
| 2025-01-01 | Yoon Seok In | Director | 신규선임(+) | 717,151 | DART ↗ |