OSR Holdings, Inc.
OSR Holdings, Inc. (OSRH) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · OSRH · as of Sep 30, 2025
Ownership Breakdown
8
Institutional Holders
$120,429
Total Inst. Value
▼ $276 vs Q2
24.57M
Shares Outstanding
freeFloat 30.58%
225,125
13F Shares Held
▲ 137,215 vs Q2
Institutional ownership = 13F shares ÷ total outstanding. Insider % = 100 − free float. Public % = free float − institution %. Data: FMP /symbol-positions-summary + /shares-float + SEC EDGAR.
Top Institutional Holders
OSRH largest shareholders · institutional ownership
Q3 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
SUSQUEHANNA INTERNATIONAL GROUP, LLP blank checks | 79.8K | 1.78% | 1.78% | $42.70M | Nov 14, 2025 | NEW |
GEODE CAPITAL MANAGEMENT, LLC blank checks | 55.6K | 1.24% | 1.24% | $29.74M | Nov 12, 2025 | NEW |
VANGUARD GROUP INC blank checks | 54.4K | 1.21% | 1.21% | $29.11M | Nov 7, 2025 | NEW |
XTX TOPCO LTD blank checks | 23.6K | 52.59% | 52.59% | $12.61M | Nov 14, 2025 | NEW |
MINT TOWER CAPITAL MANAGEMENT B.V. blank checks | 7.5K | 16.73% | 16.73% | $4.00M | Nov 12, 2025 | — held |
TOWER RESEARCH CAPITAL LLC (TRC) blank checks | 4.2K | 9.28% | 9.28% | $2.23M | Nov 14, 2025 | ▲ 3.3K |
BANK OF AMERICA CORP /DE/ blank checks | 83 | 0.19% | 0.19% | $44,000 | Feb 3, 2026 | ▲ 15 |
SBI SECURITIES CO., LTD. blank checks | 16 | 0.04% | 0.04% | $9,000 | Nov 5, 2025 | — held |
VIRTU FINANCIAL LLC blank checks | 0 | 0.00% | 0.00% | $0 | Nov 14, 2025 | EXIT |
UBS GROUP AG blank checks | 0 | 0.00% | 0.00% | $0 | Nov 13, 2025 | EXIT |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q3 2025 vs prior quarter
Q3 2025
2
Increased
+3.3K shares4
New Positions
first time holders0
Decreased
−0 shares4
Sold Out
fully exitedNet shares change (top 50)
+3.3K
+3.3K / −0
Net new holders
+2
4 new / 4 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
OSRH insider trading · insider activity
Source: SEC Form 4
15
Buy transactions
27
Sell transactions
0.56
Buy/Sell ratio
$1M
Total disposed
Recent Insider Transactions
Showing 10 most recent · Common Stock only
| Name · Role | Date | Type | Shares | Price | Value | After Trans. | Filing |
|---|---|---|---|---|---|---|---|
Bellevue Global Life Science Investors LLC 10 percent owner | Feb 14, 2025 | J-Other | 43,000 | — | — | 2.04M | Form 4 ↗ |
Hwang Kuk Hyoun President and CEO | Feb 14, 2025 | J-Other | 3,123,970 | — | — | 12.70M | Form 4 ↗ |
Hwang Kuk Hyoun President and CEO | Feb 14, 2025 | J-Other | 7,531,634 | — | — | 9.58M | Form 4 ↗ |
Hwang Kuk Hyoun President and CEO | Feb 14, 2025 | J-Other | 43,000 | — | — | 2.04M | Form 4 ↗ |
Hwang Kuk Hyoun Chief Executive Officer | Mar 23, 2023 | J-Other | 20,000 | — | — | 2.00M | Form 4 ↗ |
Hwang Kuk Hyoun Chief Executive Officer | Mar 23, 2023 | J-Other | 20,000 | $11.50 | $230.0K | 370.0K | Form 4 ↗ |
Yoo David Jin Chief Financial Officer | Mar 23, 2023 | Award | 20,000 | — | — | 20.0K | Form 4 ↗ |
Yoo David Jin Chief Financial Officer | Mar 23, 2023 | Award | 20,000 | $11.50 | $230.0K | 20.0K | Form 4 ↗ |
Bellevue Global Life Science Investors LLC 10 percent owner | Mar 23, 2023 | J-Other | 20,000 | — | — | 2.00M | Form 4 ↗ |
Source: /insider-trading/search (FMP stable). Buy/Sell direction: acquisitionOrDisposition A=Buy, D=Sell. RSU vesting (M-Exempt) excluded from sentiment bar. All data from SEC EDGAR public filings.
About institutional & insider ownership
OSR Holdings, Inc. (OSRH) is primarily owned by institutional investors, who hold approximately 0.9% of total shares outstanding. Company insiders own approximately 69.42%, while retail and public investors account for the remaining 29.66%.
The largest institutional shareholder of OSR Holdings, Inc. is SUSQUEHANNA INTERNATIONAL GROUP, LLP, holding approximately 79,807 shares — equal to 1.78% of outstanding shares — as of September 30, 2025.
A total of 8 institutional investors currently hold OSRH stock, with a combined institutional value of approximately $120,429 as of the most recent 13F filing period.
Frequently asked questions
OSRH ownershipOSR Holdings, Inc. (OSRH) is primarily owned by institutional investors, who hold approximately 0.9% of shares. The largest shareholder is SUSQUEHANNA INTERNATIONAL GROUP, LLP with a 1.78% stake. Company insiders hold 69.42%. Data sourced from SEC Form 13F as of September 30, 2025.