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X4 Pharmaceuticals Ownership | Who Owns X4 Pharmaceuticals?

OverviewForecastRevenueFinancialsChartTranscripts

X4 Pharmaceuticals Ownership Summary

X4 Pharmaceuticals is owned by 499.03% institutional investors, 1.15% insiders. Empery asset management, lp is the largest institutional shareholder, holding 120.75% 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

TypeName% Inst% Insiders% Retail
StockX4 Pharmaceuticals499.03%1.15%-400.18%
SectorHealthcare Stocks 232.51%10.72%-143.23%
IndustryBiotech Stocks 384.56%10.58%-295.14%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

HolderShares% HoldingValue
Empery asset management, lp8.95M120.75%$35.80B
Morgan stanley8.21M110.72%$32.83M
Vanguard group3.42M46.18%$13.69M
Rosalind advisors2.61M35.15%$10.42M
Nantahala capital management2.45M33.04%$9.80M
Bain capital life sciences investors2.44M32.87%$8.33M
Bvf inc/il2.23M30.13%$7.64M
Blackrock funding, inc. /de1.23M16.55%$4.91M
Deep track capital, lp1.12M15.14%$3.84M
Stonepine capital management1.06M14.25%$3.61M

Top Institutional Shareholders by % of Total Assets

HolderShares% AssetsValue
Empery asset management, lp8.95M31.57%$35.80B
Rosalind advisors2.61M3.66%$10.42M
Stonepine capital management1.06M2.94%$3.61M
Caxton15.56K1.45%$62.23K
Bain capital life sciences investors2.44M0.55%$8.33M
Kingdon capital management933.33K0.40%$3.19M
Stempoint capital lp555.41K0.38%$1.90M
Nantahala capital management2.45M0.32%$9.80M
Bvf inc/il2.23M0.31%$7.64M
Silverarc capital management357.39K0.20%$1.43M

Top Buyers

HolderShares% AssetsChange
Empery asset management, lp8.95M31.57%8.95M
Morgan stanley8.21M0.00%8.20M
Vanguard group3.42M0.00%3.01M
Bvf inc/il2.23M0.31%2.23M
Blackrock10.68M0.00%1.94M

Top Sellers

HolderShares% AssetsChange
Nea management company499.56K0.07%-14.49M
Orbimed advisors---6.78M
Adage capital partners gp---4.28M
Soleus capital management---4.05M
Perceptive advisors---3.55M

New Positions

HolderShares% AssetsChangeValue
Empery asset management, lp8.95M31.57%8.95M$35.80B
Bvf inc/il2.23M0.31%2.23M$7.64M
Deep track capital, lp1.12M0.11%1.12M$3.84M
Stonepine capital management1.06M2.94%1.06M$3.61M
Stempoint capital lp555.41K0.38%555.41K$1.90M

Sold Out

HolderChange
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

DateHoldingsChange %SharesChange %OwnershipChange %Increased PositionChange %Decreased PositionChange %
Dec 31, 202539-4.88%36,993,131170.97%4991.47%3042.86%4-55.56%
Sep 30, 202522-55.10%3,669,96333.55%493.60%10-16.67%5-86.11%
Jun 30, 202532-66.67%1,495,756-98.48%-1028.22%8-80.95%23-4.17%
Mar 31, 2025961.05%98,519,817-1.31%10.06%4210.53%249.09%
Dec 31, 202451-50.00%29,200,759-70.97%140.58%18-61.70%12-36.84%

Top Mutual Funds Shareholders

HolderShares% HoldingChange
Vanguard US Total Market Shares ETF5.03M2.90%1.00
Vanguard Total Stock Mkt Idx Inv155.70K1.96%-3.40K
iShares Russell 2000 ETF84.03K1.17%-14.31K
MEDICAL BioHealth EUR Acc1.78M1.06%-
Fidelity Small Cap Index60.83K0.85%4.08K
State St Russell Sm/Mid Cp® Indx NL Cl C1.00M0.58%-
State St Russell Sm/Mid Cp® Indx SL Cl I1.00M0.58%-
Vanguard Institutional Extnd Mkt Idx Tr44.33K0.56%-20.20K
A4Investments SICAV SIF ACCI IlanaA2EURH35.00K0.49%35.00K
Vanguard Russell 2000 ETF28.05K0.39%-9.34K

Recent Insider Transactions

DateNameRoleActivityValue
Oct 23, 2025Craig Adam R Executive ChairmanBuy$250.00K
May 16, 2025Baldry Mark Chief Commercial OfficerBuy$2.56K
May 17, 2024Baldry Mark Chief Commercial OfficerBuy$14.65K
Nov 15, 2024Baldry Mark Chief Commercial OfficerBuy$4.60K
Jan 24, 2025Ragan Paula President and CEOSell$34.72K

Insider Transactions Trends

DateBuySell
2025 Q41-
2025 Q3--
2025 Q21-
2025 Q1-5
2024 Q417

XFOR Ownership FAQ

Who Owns X4 Pharmaceuticals?

X4 Pharmaceuticals shareholders are primarily institutional investors at 499.03%, followed by 1.15% insiders and -400.18% retail investors. The average institutional ownership in X4 Pharmaceuticals's industry, Biotech Stocks , is 384.56%, which X4 Pharmaceuticals exceeds.

Who owns the most shares of X4 Pharmaceuticals?

X4 Pharmaceuticals’s largest shareholders are Empery asset management, lp (8.95M shares, 120.75%), Morgan stanley (8.21M shares, 110.72%), and Vanguard group (3.42M shares, 46.18%). Together, they hold 277.66% of X4 Pharmaceuticals’s total shares outstanding.

Does Blackrock own X4 Pharmaceuticals?

BlackRock is not among the top 10 institutional shareholders of X4 Pharmaceuticals.

Who is X4 Pharmaceuticals’s biggest shareholder by percentage of total assets invested?

Empery asset management, lp is X4 Pharmaceuticals’s biggest shareholder by percentage of total assets invested, with 31.57% of its assets in 8.95M X4 Pharmaceuticals shares, valued at 35.8B$.

Who is the top mutual fund holder of X4 Pharmaceuticals shares?

Vanguard US Total Market Shares ETF is the top mutual fund holder of X4 Pharmaceuticals shares, with 2.90% of its total shares outstanding invested in 5.03M X4 Pharmaceuticals shares.

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