X4 Pharmaceuticals Ownership | Who Owns X4 Pharmaceuticals?
X4 Pharmaceuticals Ownership Summary
X4 Pharmaceuticals is owned by 49.51% institutional investors, 1.15% insiders, and 49.34% retail investors. Bain capital life sciences investors is the largest institutional shareholder, holding 32.87% of XFOR shares. Vanguard US Total Market Shares ETF is the top mutual fund, with 2.90% of its assets in X4 Pharmaceuticals shares.
XFOR Ownership Benchmark
| Type | Name | % Inst | % Insiders | % Retail |
|---|---|---|---|---|
| Stock | X4 Pharmaceuticals | 49.51% | 1.15% | 49.34% |
| Sector | Healthcare Stocks | 42.54% | 10.83% | 46.63% |
| Industry | Biotech Stocks | 45.22% | 10.75% | 44.04% |
Institutional Shareholders
Top Institutional Shareholders by Total Shares
| Holder | Shares | % Holding | Value |
|---|---|---|---|
| Bain capital life sciences investors | 2.44M | 32.87% | $8.33M |
| Bvf inc/il | 2.23M | 30.13% | $7.64M |
| Nantahala capital management | 2.23M | 30.06% | $7.62M |
| Rosalind advisors | 1.54M | 20.84% | $5.28M |
| Deep track capital, lp | 1.12M | 15.14% | $3.84M |
| Stonepine capital management | 1.06M | 14.25% | $3.61M |
| Kingdon capital management | 933.33K | 12.59% | $3.19M |
| Stempoint capital lp | 555.41K | 7.49% | $1.90M |
| Vanguard group | 410.49K | 5.54% | $1.40M |
| Blackrock | 10.68M | 5.34% | $6.19M |
Top Institutional Shareholders by % of Total Assets
| Holder | Shares | % Assets | Value |
|---|---|---|---|
| Stonepine capital management | 1.06M | 2.94% | $3.61M |
| Rosalind advisors | 1.54M | 1.81% | $5.28M |
| Bain capital life sciences investors | 2.44M | 0.55% | $8.33M |
| Kingdon capital management | 933.33K | 0.40% | $3.19M |
| Stempoint capital lp | 555.41K | 0.38% | $1.90M |
| Bvf inc/il | 2.23M | 0.31% | $7.64M |
| Nantahala capital management | 2.23M | 0.26% | $7.62M |
| Deep track capital, lp | 1.12M | 0.11% | $3.84M |
| Palumbo wealth management | 95.33K | 0.10% | $326.02K |
| Nea management company | 499.56K | 0.07% | $949.16K |
Top Buyers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Bvf inc/il | 2.23M | 0.31% | 2.23M |
| Nantahala capital management | 2.23M | 0.26% | 2.23M |
| Blackrock | 10.68M | 0.00% | 1.94M |
| Bain capital life sciences investors | 2.44M | 0.55% | 1.87M |
| Susquehanna group, llp | 1.89M | 0.00% | 1.71M |
Top Sellers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Nea management company | 499.56K | 0.07% | -14.49M |
| Orbimed advisors | - | - | -6.78M |
| Adage capital partners gp | - | - | -4.28M |
| Soleus capital management | - | - | -4.05M |
| Perceptive advisors | - | - | -3.55M |
New Positions
| Holder | Shares | % Assets | Change | Value |
|---|---|---|---|---|
| Bvf inc/il | 2.23M | 0.31% | 2.23M | $7.64M |
| Nantahala capital management | 2.23M | 0.26% | 2.23M | $7.62M |
| Rosalind advisors | 1.54M | 1.81% | 1.54M | $5.28M |
| Deep track capital, lp | 1.12M | 0.11% | 1.12M | $3.84M |
| Stonepine capital management | 1.06M | 2.94% | 1.06M | $3.61M |
Sold Out
| Holder | Change |
|---|---|
| True wealth design | -3.00 |
| Frazier financial advisors | -10.00 |
| Headlands | -16.00 |
| Nelson, van denburg & campbell wealth management group | -22.00 |
| Eversource wealth advisors | -23.00 |
Institutional Ownership Trends
| Date | Holdings | Change % | Shares | Change % | Ownership | Change % | Increased Position | Change % | Decreased Position | Change % |
|---|---|---|---|---|---|---|---|---|---|---|
| Sep 30, 2025 | 22 | -55.10% | 3,669,963 | 33.55% | 49 | 3.60% | 10 | -16.67% | 5 | -86.11% |
| Jun 30, 2025 | 32 | -66.67% | 1,495,756 | -98.48% | - | 1028.22% | 8 | -80.95% | 23 | -4.17% |
| Mar 31, 2025 | 96 | 1.05% | 98,519,817 | -1.31% | 1 | 0.06% | 42 | 10.53% | 24 | 9.09% |
| Dec 31, 2024 | 51 | -50.00% | 29,200,759 | -70.97% | 14 | 0.58% | 18 | -61.70% | 12 | -36.84% |
| Sep 30, 2024 | 102 | -2.86% | 100,589,648 | -0.93% | 50 | 1.94% | 47 | -16.07% | 19 | 5.56% |
Top Mutual Funds Shareholders
| Holder | Shares | % Holding | Change |
|---|---|---|---|
| Vanguard US Total Market Shares ETF | 5.03M | 2.90% | 1.00 |
| Vanguard Total Stock Mkt Idx Inv | 155.70K | 1.96% | -3.40K |
| iShares Russell 2000 ETF | 84.03K | 1.17% | -14.31K |
| MEDICAL BioHealth EUR Acc | 1.78M | 1.06% | - |
| Fidelity Small Cap Index | 60.83K | 0.85% | 4.08K |
| State St Russell Sm/Mid Cp® Indx NL Cl C | 1.00M | 0.58% | - |
| State St Russell Sm/Mid Cp® Indx SL Cl I | 1.00M | 0.58% | - |
| Vanguard Institutional Extnd Mkt Idx Tr | 44.33K | 0.56% | -20.20K |
| A4Investments SICAV SIF ACCI IlanaA2EURH | 35.00K | 0.49% | 35.00K |
| Vanguard Russell 2000 ETF | 28.05K | 0.39% | -9.34K |
Recent Insider Transactions
| Date | Name | Role | Activity | Value |
|---|---|---|---|---|
| Oct 23, 2025 | Craig Adam R | Executive Chairman | Buy | $250.00K |
| May 16, 2025 | Baldry Mark | Chief Commercial Officer | Buy | $2.56K |
| May 17, 2024 | Baldry Mark | Chief Commercial Officer | Buy | $14.65K |
| Nov 15, 2024 | Baldry Mark | Chief Commercial Officer | Buy | $4.60K |
| Jan 24, 2025 | Ragan Paula | President and CEO | Sell | $34.72K |
Insider Transactions Trends
| Date | Buy | Sell |
|---|---|---|
| 2025 Q4 | 1 | - |
| 2025 Q3 | - | - |
| 2025 Q2 | 1 | - |
| 2025 Q1 | - | 5 |
| 2024 Q4 | 1 | 7 |
XFOR Ownership FAQ
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