Zenas BioPharma (ZBIO) Insider Trading & Ownership $26.99 +1.14 (+4.41%) As of 10/15/2025 04:00 PM Eastern Add Compare Share Share Insider Trades Stock AnalysisAnalyst ForecastsChartCompetitorsEarningsFDA EventsHeadlinesInsider TradesOwnershipSEC FilingsShort InterestTrendsBuy This Stock Zenas BioPharma (NASDAQ:ZBIO) Insider Buying and Selling ActivityCurrentInsider OwnershipPercentage16.50%Number OfInsiders Buying(Last 12 Months)6Amount OfInsider Buying(Last 12 Months)$17.63MNumber OfInsiders Selling(Last 12 Months)0 Get ZBIO Insider Trade Alerts Want to know when executives and insiders are buying or selling Zenas BioPharma stock? Sign up for InsiderTrades.com's daily newsletter to get the latest insider transactions delivered to your inbox daily. 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ZBIO Insider Buying and Selling by Quarter Zenas BioPharma Insider and Congressional Trades History Insiders and Members of Congress Insiders Only Members of Congress Only Transaction Type Custom Range 1 Month 3 Months 6 Months Year-to-Date 1 Year 2 Years 3 Years Time Frame Start Date End Date Export to Excel Transaction DateNameTitleBuy/SellNumber of SharesAverage Share PriceTotal TransactionDetails10/9/2025Jason Raleigh NunnDirectorBuy63,158$19.00$1,200,002.00 10/9/2025Patrick G EnrightDirectorBuy11,990$20.85$249,991.50 10/9/2025Patrick G EnrightDirectorBuy105,265$19.00$2,000,035.00 10/9/2025Sr One Capital Management, LlcMajor ShareholderBuy126,315$19.00$2,399,985.00 10/7/2025Fairmount Funds Management LlcDirectorBuy316,219$19.00$6,008,161.00 10/7/2025Hongbo LuDirectorBuy263,160$19.00$5,000,040.00 10/7/2025Leon O Moulder JrInsiderBuy36,928$20.85$769,948.80 (Data available from 1/1/2013 forward) ZBIO Insider Trading Activity - Frequently Asked Questions Who is on Zenas BioPharma's Insider Roster? The list of insiders at Zenas BioPharma includes Fairmount Funds Management Llc, Hongbo Lu, Jason Raleigh Nunn, Leon O Moulder Jr, Patrick G Enright, and Sr One Capital Management, Llc. Learn more on insiders at ZBIO. What percentage of Zenas BioPharma stock is owned by insiders? 16.50% of Zenas BioPharma stock is owned by insiders. Learn more on ZBIO's insider holdings. Which Zenas BioPharma insiders have been buying company stock? The following insiders have purchased ZBIO shares in the last 24 months: Fairmount Funds Management Llc ($6,008,161.00), Hongbo Lu ($6,000,031.00), Jason Raleigh Nunn ($1,200,002.00), Leon O Moulder Jr ($769,948.80), Patrick G Enright ($2,250,026.50), and Sr One Capital Management, Llc ($2,399,985.00). How much insider buying is happening at Zenas BioPharma? Insiders have purchased a total of 981,858 ZBIO shares in the last 24 months for a total of $18,628,154.30 bought. 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