South Korea Biotechnology & Medical Research

Y Biologics Inc (338840)

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Y-Biologics recorded two insider trading transactions during the past ninety days, both involving purchases by Representative Directors. Park Young woo and Park Bum chan acquired shares totaling 27.6 million KRW on October 14, 2026. These acquisitions occurred amid a period where the stock price declined by 30.7 percent.
Ticker: 338840 Exchange: KOE
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• Purchase • Sale • Planned purchase • Planned sale Net purchase Net sale Buy signal Sell signal Earnings
No insider activity signals detected

Insider trades have not triggered unusual activity signals for this company.

Top insiders
Trades
Abbreviations B: Buy, S: Sell, PP: Planned purchase, PlS: Planned sale, PrS: Proposed sale, O: Option / Other
Park Young woo (박영우) Representative Director (대표이사) Executive Director Large shareholder
Transaction date
Purchase
Price
349.80
Quantity 23,560 +31.0%
Value ₩2,807,513
Lee Sang heon (이상헌) Vice President (부사장) Officer
Transaction date
Purchase
Price
163.09
Quantity 37,738 +7.8%
Value ₩1,186,235
Park Young woo (박영우) Representative Director (대표이사) Executive Director Large shareholder
Transaction date
Purchase
Price
395.56
Quantity 20,590 +25.9%
Value ₩124,635
Park Bum chan (박범찬) Representative Director (대표이사) Executive Director
Transaction date
Purchase
Price
7,084.00
Quantity 1,000 +0.5%
Value ₩100,000
Notification date Transaction date B/S Transaction type Insider and/or position Nb. shares
Price
Value 		Number of shares Price Value Details
2026-10-15 2026-10-15 B Purchase Park Young woo (박영우)

Representative Director (대표이사)

Executive Director Large shareholder
23,560 +31.0%
349.80
₩2,807,513 		23,560 +31.0% 349.80 ₩2,807,513
2026-10-15 2026-10-15 B Purchase Lee Sang heon (이상헌)

Vice President (부사장)

Officer
37,738 +7.8%
163.09
₩1,186,235 		37,738 +7.8% 163.09 ₩1,186,235
2026-10-14 2026-10-14 B Purchase Park Young woo (박영우)

Representative Director (대표이사)

Executive Director Large shareholder
20,590 +25.9%
395.56
₩124,635 		20,590 +25.9% 395.56 ₩124,635
2026-10-14 2026-10-14 B Purchase Park Bum chan (박범찬)

Representative Director (대표이사)

Executive Director
1,000 +0.5%
7,084.00
₩100,000 		1,000 +0.5% 7,084.00 ₩100,000
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