Haesung Optics076610

Largest holderOH-ULMUS Restructuring Investment Fund No.125.14%$4.1M

Filed holders125% or more, plus insiders

Price and institutional trades

1Y 2Y

$0.64+53.8%1Y

DecJanFebMarAprMayJunJulAugSepOctNov

Holders

$4.1M · 2025-05-2225.14%

$3.9M · 2025-12-3011.04%New

$2.4M · 2025-06-208.51%

$1.1M · 2026-01-263.56%−2.88pp

$1.1M · 2026-06-242.82%−3.30pp

$383K · 2025-05-072.34%

$288K · 2025-06-201.03%

5 other related parties$132K0.82%

Average cost is the mean purchase price from filings since November 2024. Indirect stakes multiply ownership through listed companies.

Indirect-only holders

$302K · indirect1.84%

Koas 16.69% → Haesung Optics 11.04%1.84%

Filings

Filed	Changed	Before → after	Amount	Avg buy price
2026-06-24	2026-06-15	6.12 → 2.82%	−$919K	-	Filing
2026-01-26	2026-01-19	5.96 → 3.56%	−$771K	-	Filing
2026-01-20	2026-01-15	7.13 → 5.96%	−$288K	-	Filing
2026-01-06	2025-12-24	12.47 → 0.00%	−$11M	-	Filing
2025-12-30	2025-12-24	0.00 → 11.04%

$182K · indirect1.11%

Koas 10.08% → Haesung Optics 11.04%1.11%

$64K · indirect0.39%

Koas 3.52% → Haesung Optics 11.04%0.39%

$58K · indirect0.35%

Koas 3.18% → Haesung Optics 11.04%0.35%

$47K · indirect0.29%

Koas 2.60% → Haesung Optics 11.04%0.29%

$39K · indirect0.24%

Koas 2.18% → Haesung Optics 11.04%0.24%

$23K · indirect0.14%

Koas 1.26% → Haesung Optics 11.04%0.14%

$16K · indirect0.10%

Koas 0.91% → Haesung Optics 11.04%0.10%

No direct stake in the filings. It may be under 5% or filed before November 2024, so actual holdings may be larger.

20 in the last 2 years · amount = quantity × price per trade in the last year (closing price where no price is filed), avg buy price = average of buys in that filing · change dates and prices only where the original filing was fetched

Oh Young-hyunInsider report