InsiderTrades.com logo

ZBIO Insider Trading

Insider Ownership Percentage: 16.50%
Insider Buying (Last 12 Months): $17,628,163.30
Insider Selling (Last 12 Months): $0.00

Zenas BioPharma Insider Trading History Chart

This chart shows the insider buying and selling history at Zenas BioPharma by year and by quarter.

Skip ChartChart Data in Insider Trading History Table

Zenas BioPharma Share Price & Price History

Current Price: $38.11
Price Change: ▲ Price Increase of +1.44 (3.93%)
As of 12/4/2025 05:00 PM ET

This chart shows the closing price history over time for ZBIO up to the past year.

Skip Chart and Table DataPrice Data in Insider Trading History Table
Days: 30 | 90 | 365

Zenas BioPharma Insider Trading History

Transaction DateInsider NameTitleBuy/SellNumber of SharesAverage Share PriceTotal TransactionShares Held After TransactionDetails
10/9/2025Jason Raleigh NunnDirectorBuy63,158$19.00$1,200,002.001,173,395View SEC Filing Icon  
10/9/2025Patrick G. EnrightDirectorBuy11,990$20.85$249,991.5011,990View SEC Filing Icon  
10/9/2025Patrick G. EnrightDirectorBuy105,265$19.00$2,000,035.001,832,669View SEC Filing Icon  
10/9/2025Sr One Capital Management, LlcMajor ShareholderBuy126,315$19.00$2,399,985.001,917,895View SEC Filing Icon  
10/7/2025Fairmount Funds Management LlcDirectorBuy316,219$19.00$6,008,161.002,209,025View SEC Filing Icon  
10/7/2025Hongbo LuDirectorBuy263,160$19.00$5,000,040.00321,983View SEC Filing Icon  
10/7/2025Leon O Moulder JrInsiderBuy36,928$20.85$769,948.8036,928View SEC Filing Icon  
9/13/2024Hongbo LuDirectorBuy58,823$17.00$999,991.0058,823View SEC Filing Icon  
See Full Table

SEC Filings (Institutional Ownership Changes) for Zenas BioPharma (NASDAQ:ZBIO)

Institutional Buying and Selling by Quarter

This chart shows the instiutional buying and selling at ZBIO by year and by quarter.

Skip Institutional Buying and Selling Chart and Table DataRead Chart Data in Institutional Trading History Table

Zenas BioPharma Institutional Trading History

Reporting DateHedge FundShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
11/17/2025Quarry LP1,134$25K0.0%+34.5%0.002%Search for SEC Filing on Google Icon
11/17/2025Millennium Management LLC71,850$1.60M0.0%N/A0.134%Search for SEC Filing on Google Icon
11/17/2025MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.7,461$0.17M0.0%-16.0%0.014%Search for SEC Filing on Google Icon
11/17/2025Bank of America Corp DE14,809$0.33M0.0%+5.8%0.028%Search for SEC Filing on Google Icon
11/17/2025ArrowMark Colorado Holdings LLC824,668$18.31M0.3%-24.6%1.536%Search for SEC Filing on Google Icon
11/17/2025Alliancebernstein L.P.18,350$0.41M0.0%+12.2%0.034%Search for SEC Filing on Google Icon
11/14/2025Creative Planning11,882$0.26M0.0%N/A0.022%Search for SEC Filing on Google Icon
11/14/2025Two Sigma Investments LP20,382$0.45M0.0%+3.9%0.048%Search for SEC Filing on Google Icon
11/14/2025Wellington Management Group LLP857,524$19.04M0.0%-2.4%2.036%Search for SEC Filing on Google Icon
11/13/2025Invesco Ltd.145,796$3.24M0.0%N/A0.346%Search for SEC Filing on Google Icon
11/13/2025UBS Group AG35,492$0.79M0.0%+46.3%0.084%Search for SEC Filing on Google Icon
11/13/2025BNP Paribas Financial Markets3,146$70K0.0%+120.0%0.007%Search for SEC Filing on Google Icon
11/13/2025Russell Investments Group Ltd.1,345$30K0.0%N/A0.003%Search for SEC Filing on Google Icon
11/13/2025Schroder Investment Management Group112,612$2.32M0.0%-27.3%0.267%Search for SEC Filing on Google Icon
11/7/2025Vanguard Group Inc.1,162,758$25.81M0.0%+17.2%2.761%Search for SEC Filing on Google Icon
11/7/2025JPMorgan Chase & Co.6,548$0.15M0.0%-14.7%0.016%Search for SEC Filing on Google Icon
11/7/2025PNC Financial Services Group Inc.5,843$0.13M0.0%-36.3%0.014%Search for SEC Filing on Google Icon
11/6/2025Rhumbline Advisers21,214$0.47M0.0%+7.6%0.050%Search for SEC Filing on Google Icon
11/5/2025Alps Advisors Inc.20,042$0.45M0.0%-11.1%0.048%Search for SEC Filing on Google Icon
8/15/2025Bank of America Corp DE13,991$0.14M0.0%+32.3%0.033%Search for SEC Filing on Google Icon
8/14/2025Sei Investments Co.12,142$0.12M0.0%N/A0.029%Search for SEC Filing on Google Icon
8/14/2025Federated Hermes Inc.1,861,838$18.04M0.0%+60.8%4.451%Search for SEC Filing on Google Icon
8/13/2025Schroder Investment Management Group154,916$1.48M0.0%-5.6%0.370%Search for SEC Filing on Google Icon
8/12/2025Rhumbline Advisers19,721$0.19M0.0%+71.3%0.047%Search for SEC Filing on Google Icon
8/8/2025Intech Investment Management LLC13,206$0.13M0.0%+13.9%0.032%Search for SEC Filing on Google Icon
8/8/2025Geode Capital Management LLC373,617$3.62M0.0%+4.6%0.893%Search for SEC Filing on Google Icon
8/8/2025PNC Financial Services Group Inc.9,179$89K0.0%+41.2%0.022%Search for SEC Filing on Google Icon
6/27/2025Goldman Sachs Group Inc.23,957$0.19M0.0%-43.2%0.057%Search for SEC Filing on Google Icon
5/29/2025Rhumbline Advisers11,514$91K0.0%-70.4%0.028%Search for SEC Filing on Google Icon
5/16/2025Goldman Sachs Group Inc.23,957$0.19M0.0%-43.2%0.057%Search for SEC Filing on Google Icon
5/14/2025Wellington Management Group LLP873,623$6.90M0.0%-23.0%2.088%Search for SEC Filing on Google Icon
5/12/2025Nuveen LLC31,626$0.25M0.0%N/A0.076%Search for SEC Filing on Google Icon
5/9/2025Charles Schwab Investment Management Inc.116,140$0.92M0.0%-2.1%0.278%Search for SEC Filing on Google Icon
5/8/2025Jefferies Financial Group Inc.44,067$0.35M0.0%N/A0.105%Search for SEC Filing on Google Icon
5/1/2025New York State Common Retirement Fund6,200$49K0.0%N/A0.015%Search for SEC Filing on Google Icon
4/30/2025Alps Advisors Inc.28,132$0.22M0.0%-16.7%0.067%Search for SEC Filing on Google Icon
4/8/2025Rhumbline Advisers11,514$91K0.0%-70.4%0.028%Search for SEC Filing on Google Icon
3/24/2025Wellington Management Group LLP1,135,289$9.17M0.0%-24.4%2.716%Search for SEC Filing on Google Icon
Data available starting January 2016

See Full Table
Zenas BioPharma logo
Zenas BioPharma, Inc. is a clinical-stage global biopharmaceutical company, which engages in the development and commercialization of transformative immunology-based therapies for patients. The company was founded by Lonnie O. Moulder Jr on November 12, 2019 and is headquartered in Waltham, MA.
Read More on Zenas BioPharma

Today's Range

Now: $38.11
Low: $34.72
High: $38.12

50 Day Range

MA: $30.24
Low: $20.09
High: $40.53

52 Week Range

Now: $38.11
Low: $5.83
High: $41.00

Volume

240,023 shs

Average Volume

327,086 shs

Market Capitalization

$2.05 billion

P/E Ratio

N/A

Dividend Yield

N/A

Beta

N/A

Who are the company insiders with the largest holdings of Zenas BioPharma?

Zenas BioPharma's top insider shareholders include:
  1. Fairmount Funds Management Llc (Director)
  2. Sr One Capital Management, Llc (Major Shareholder)
  3. Patrick G Enright (Director)
  4. Jason Raleigh Nunn (Director)
  5. Hongbo Lu (Director)
  6. Leon O Moulder Jr (Insider)
Learn More about top insider investors at Zenas BioPharma.

Who are the major institutional investors of Zenas BioPharma?

Zenas BioPharma's top institutional shareholders include:
  1. Vanguard Group Inc. — 2.76%
  2. Wellington Management Group LLP — 2.04%
  3. ArrowMark Colorado Holdings LLC — 1.54%
  4. Invesco Ltd. — 0.35%
  5. Schroder Investment Management Group — 0.27%
  6. Millennium Management LLC — 0.13%
Learn More about top institutional investors of Zenas BioPharma stock.

Which major investors are selling Zenas BioPharma stock?

During the last quarter, ZBIO stock was sold by these institutional investors:
  1. ArrowMark Colorado Holdings LLC
  2. Schroder Investment Management Group
  3. Wellington Management Group LLP
  4. PNC Financial Services Group Inc.
  5. Alps Advisors Inc.
  6. MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.
  7. JPMorgan Chase & Co.

Which major investors are buying Zenas BioPharma stock?

During the previous quarter, ZBIO stock was purchased by institutional investors including:
  1. Vanguard Group Inc.
  2. Invesco Ltd.
  3. Millennium Management LLC
  4. Creative Planning
  5. UBS Group AG
  6. Alliancebernstein L.P.
  7. BNP Paribas Financial Markets
  8. Rhumbline Advisers
In the last year, these company insiders have bought Zenas BioPharma stock:
  1. Fairmount Funds Management Llc (Director)
  2. Sr One Capital Management, Llc (Major Shareholder)
  3. Patrick G Enright (Director)
  4. Jason Raleigh Nunn (Director)
  5. Hongbo Lu (Director)
  6. Leon O Moulder Jr (Insider)
Learn More investors buying Zenas BioPharma stock.