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Zenas BioPharma Ownership | Who Owns Zenas BioPharma?

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Zenas BioPharma Ownership Summary

Zenas BioPharma is owned by 122.94% institutional investors, 23.20% insiders. Fmr is the largest institutional shareholder, holding 19.53% of ZBIO shares. American Funds SMALLCAP World A is the top mutual fund, with 3.86% of its assets in Zenas BioPharma shares.

ZBIO Ownership Benchmark

TypeName% Inst% Insiders% Retail
StockZenas BioPharma122.94%23.20%-46.14%
SectorHealthcare Stocks 35.58%11.87%52.55%
IndustryBiotech Stocks 35.75%11.83%52.41%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

HolderShares% HoldingValue
Fmr9.08M19.53%$177.55M
Sr one capital management, lp5.04M10.84%$98.49M
Nea management company4.02M8.65%$78.65M
Enavate sciences gp3.92M8.43%$76.62M
Federated hermes3.13M6.73%$61.13M
Polar capital2.55M5.48%$49.82M
Capital investors2.43M5.24%$47.58M
Fairmount funds management2.36M5.07%$46.12M
Blackrock funding, inc. /de2.04M4.38%$39.83M
Nvp associates1.84M3.95%$35.94M

Top Institutional Shareholders by % of Total Assets

HolderShares% AssetsValue
Enavate sciences gp3.92M21.80%$76.62M
Nvp associates1.84M20.40%$35.94M
Sr one capital management, lp5.04M10.76%$98.49M
Nea management company4.02M4.47%$78.65M
Pivotal bioventure partners investment advisor591.99K4.14%$11.57M
Fairmount funds management2.36M3.33%$46.12M
Great point partners524.07K2.35%$10.25M
Silverarc capital management1.14M2.27%$22.21M
Monashee investment management150.00K1.60%$2.93M
Sio capital management331.73K0.93%$6.49M

Top Buyers

HolderShares% AssetsChange
Capital investors2.43M0.01%2.43M
Polar capital2.55M0.18%1.49M
Fmr9.08M0.01%1.38M
Silverarc capital management1.14M2.27%1.14M
State street1.47M0.00%1.03M

Top Sellers

HolderShares% AssetsChange
Novo---1.45M
Vivo capital---853.50K
Perceptive advisors---744.03K
Point72 asset management---368.40K
Catalio capital management, lp---215.31K

New Positions

HolderShares% AssetsChangeValue
Capital investors2.43M0.01%2.43M$47.58M
Silverarc capital management1.14M2.27%1.14M$22.21M
Woodline partners lp590.52K0.04%590.52K$11.54M
Great point partners524.07K2.35%524.07K$10.25M
Sio capital management331.73K0.93%331.73K$6.49M

Sold Out

HolderChange
Clearstead advisors-1.00
Srs capital advisors-4.00
Sjs investment consulting-7.00
Ifp advisors-12.00
Mrp capital investments-35.00

Institutional Ownership Trends

DateHoldingsChange %SharesChange %OwnershipChange %Increased PositionChange %Decreased PositionChange %
Mar 31, 20261404.48%54,992,50332.32%1221.26%10617.78%16-33.33%
Dec 31, 202522-72.50%1,590,706-95.43%30.05%16-56.76%2-90.91%
Sep 30, 202524-66.67%3,311,937-90.27%70.12%10-78.72%4-63.64%
Jun 30, 20257212.50%34,055,19122.15%811.83%4767.86%11-45.00%
Mar 31, 2025664.76%32,487,0833.18%7713.66%27-42.55%20233.33%

Top Mutual Funds Shareholders

HolderShares% HoldingChange
American Funds SMALLCAP World A2.43M3.86%2.43M
Polar Capital Biotech S Inc2.41M3.82%160.17K
Federated Hermes Kaufmann Growth1.82M2.89%241.28K
Federated Hermes Kaufmann R1.82M2.89%241.28K
Federated Hermes Kaufmann Small Cap Grow1.25M1.98%509.41K
Federated Hermes Kaufmann Small Cap A1.25M1.98%154.32K
Fidelity Select Health Care1.08M1.71%-
State Street® SPDR® S&P® Biotech ETF985.74K1.56%-7.18K
Fidelity Small Cap Growth927.43K1.47%271.32K
Vanguard Total Stock Mkt Idx Inv891.20K1.41%-

Recent Insider Transactions

DateNameRoleActivityValue
May 18, 2026MOULDER LEON O JR Chief Executive OfficerBuy$1.01M
Apr 29, 2026MOULDER LEON O JR Chief Executive OfficerBuy$616.70K
Apr 28, 2026MOULDER LEON O JR Chief Executive OfficerBuy$450.50K
Mar 31, 2026Lu Hongbo-Buy$70.20K
Mar 31, 2026Fairmount Funds Management LLC-Buy$3.00M

Insider Transactions Trends

DateBuySell
2026 Q23-
2026 Q114-
2025 Q48-
2025 Q2--
2025 Q12-

ZBIO Ownership FAQ

Who Owns Zenas BioPharma?

Zenas BioPharma shareholders are primarily institutional investors at 122.94%, followed by 23.20% insiders and -46.14% retail investors. The average institutional ownership in Zenas BioPharma's industry, Biotech Stocks , is 35.75%, which Zenas BioPharma exceeds.

Who owns the most shares of Zenas BioPharma?

Zenas BioPharma’s largest shareholders are Fmr (9.08M shares, 19.53%), Sr one capital management, lp (5.04M shares, 10.84%), and Nea management company (4.02M shares, 8.65%). Together, they hold 39.02% of Zenas BioPharma’s total shares outstanding.

Does Blackrock own Zenas BioPharma?

BlackRock is not among the top 10 institutional shareholders of Zenas BioPharma.

Who is Zenas BioPharma’s biggest shareholder by percentage of total assets invested?

Enavate sciences gp is Zenas BioPharma’s biggest shareholder by percentage of total assets invested, with 21.80% of its assets in 3.92M Zenas BioPharma shares, valued at 76.62M$.

Who is the top mutual fund holder of Zenas BioPharma shares?

American Funds SMALLCAP World A is the top mutual fund holder of Zenas BioPharma shares, with 3.86% of its total shares outstanding invested in 2.43M Zenas BioPharma shares.

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