Top-Rated StocksTop-RatedNASDAQ:PRTA Prothena (PRTA) Insider Trading & Ownership $69.50 -0.45 (-0.64%) (As of 04:33 PM ET) Add Compare Share Share Today's Range$68.72▼$70.6050-Day Range$48.26▼$78.5952-Week Range$21.06▼$79.65Volume281,155 shsAverage Volume478,777 shsMarket Capitalization$3.67 billionP/E RatioN/ADividend YieldN/APrice Target$86.33 Insider TradesProfileAnalyst RatingsChartCompetitorsEarningsFinancialsInsider TradesInstitutional OwnershipHeadlinesOptions ChainSEC FilingsShort InterestSocial MediaProfileAnalyst RatingsChartCompetitorsEarningsFinancialsInsider TradesInstitutional OwnershipHeadlinesOptions ChainSEC FilingsShort InterestSocial Media Prothena (NASDAQ:PRTA) Insider Buying and Selling ActivityCurrentInsider OwnershipPercentage28.20%Number OfInsiders Buying(Last 12 Months)0Number OfInsiders Selling(Last 12 Months)10Amount OfInsider Selling(Last 12 Months)$34.59 M PRTA Insider Buying and Selling by Quarter Get PRTA Insider Trade Alerts Want to know when executives and insiders are buying or selling Prothena stock? Sign up for InsiderTrades.com's daily newsletter to get the latest insider transactions delivered to your inbox daily. Email Address Prothena Insider Trades History 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 DateInsider NameTitleBuy/SellNumber of SharesAverage Share PriceTotal TransactionShares Held After TransactionDetails6/7/2023Wagner M. ZagoinsiderSell19,000$71.06$1,350,140.00 5/31/2023Michael J. MalecekinsiderSell5,000$64.64$323,200.00 5/19/2023Karin L. WalkerCAOSell5,000$74.00$370,000.00 5/17/2023Gene G KinneyCEOSell45,000$73.70$3,316,500.0012,793 5/17/2023Tran NguyenCFOSell95,000$73.99$7,029,050.003,200 5/3/2023Dennis J SelkoeDirectorSell15,000$57.00$855,000.002,845 4/26/2023Michael J. MalecekinsiderSell5,000$53.46$267,300.00 4/19/2023Karin L. WalkerCAOSell5,000$52.90$264,500.00 3/29/2023Michael J. MalecekinsiderSell5,000$49.02$245,100.00 3/20/2023Karin L. WalkerCAOSell5,000$47.72$238,600.00 3/15/2023Karin L. WalkerCAOSell20,000$48.42$968,400.00 3/15/2023Michael J. MalecekinsiderSell15,000$48.44$726,600.00 3/15/2023Tran NguyenCFOSell10,000$48.43$484,300.003,200 2/15/2023Tran NguyenCFOSell10,000$53.34$533,400.003,200 1/18/2023Tran NguyenCFOSell10,000$55.53$555,300.003,200 1/10/2023Shane CookeDirectorSell5,000$52.92$264,600.00 1/5/2023Richard T CollierDirectorSell5,000$52.67$263,350.001,219 1/3/2023Lars EkmanInsiderSell15,834$55.98$886,387.32243 12/21/2022Tran NguyenCFOSell10,000$58.97$589,700.003,200 12/12/2022Shane CookeDirectorSell5,000$61.04$305,200.00 12/5/2022Richard T CollierDirectorSell5,000$62.07$310,350.001,219 11/30/2022Michael J. MalecekinsiderSell5,000$62.28$311,400.00243 11/23/2022Tran NguyenCFOSell10,000$61.09$610,900.003,200 11/18/2022Karin L. WalkerCAOSell10,000$57.07$570,700.00 11/10/2022Shane CookeDirectorSell5,000$56.17$280,850.00 11/7/2022Richard T CollierDirectorSell5,000$55.62$278,100.001,219 11/1/2022Lars EkmanInsiderSell15,833$62.88$995,579.04243 10/27/2022Michael J. MalecekinsiderSell20,000$62.00$1,240,000.00 10/24/2022Karin L. WalkerCAOSell20,000$57.23$1,144,600.00 10/19/2022Tran NguyenCFOSell10,000$56.44$564,400.003,200 10/10/2022Shane CookeDirectorSell5,000$55.91$279,550.00 10/5/2022Richard T CollierDirectorSell5,000$57.92$289,600.001,219 10/3/2022Hideki GarreninsiderSell4,000$60.90$243,600.00243 9/28/2022Gene G KinneyCEOSell16,412$53.38$876,072.5612,793 9/28/2022Lars EkmanInsiderSell31,666$48.09$1,522,817.94243 9/28/2022Shane CookeDirectorSell10,000$48.09$480,900.001,219 9/21/2022Gene G KinneyCEOSell2,720$32.02$87,094.4012,793 9/21/2022Tran NguyenCFOSell10,000$30.75$307,500.003,200 9/15/2022Hideki GarreninsiderSell4,000$30.00$120,000.00 8/24/2022Tran NguyenCFOSell10,000$30.17$301,700.003,200 8/17/2022Gene G KinneyCEOSell2,181$32.03$69,857.4312,793 8/12/2022Gene G KinneyCEOSell20,284$32.16$652,333.4412,793 8/10/2022Gene G KinneyCEOSell991$32.01$31,721.9112,793 8/5/2022Gene G KinneyCEOSell21,506$32.83$706,041.9812,793 8/1/2022Hideki GarreninsiderSell4,000$30.52$122,080.00 7/27/2022Gene G KinneyCEOSell376$32.00$12,032.0012,793 7/22/2022Tran NguyenCFOSell7,320$32.55$238,266.003,200 7/20/2022Shane CookeDirectorSell15,000$32.90$493,500.00 7/20/2022Tran NguyenCFOSell42,120$32.49$1,368,478.803,200 7/6/2022Hideki GarreninsiderSell8,000$30.00$240,000.00 (Data available from 1/1/2013 forward) PRTA Insider Trading Activity - Frequently Asked Questions Who is on Prothena's Insider Roster? The list of insiders at Prothena includes Carol D Karp, Christopher S Henney, Dennis J Selkoe, Ecor1 Capital, Llc, Gene G Kinney, Hideki Garren, Karin L Walker, Lars Ekman, Michael J Malecek, Richard T Collier, Shane Cooke, Tran Nguyen, Wagner M Zago. Learn more on insiders at PRTA. What percentage of Prothena stock is owned by insiders? 28.20% of Prothena stock is owned by insiders. Learn more on PRTA's insider holdings. Which Prothena insiders have been buying company stock? The following insider purchased PRTA shares in the last 24 months: Ecor1 Capital, Llc ($42,090,598.72). How much insider buying is happening at Prothena? Insiders have purchased a total of 1,362,736 PRTA shares in the last 24 months for a total of $42,090,598.72 bought. Which Prothena insiders have been selling company stock? The following insiders have sold PRTA shares in the last 24 months: Carol D Karp ($1,254,100.00), Christopher S Henney ($1,899,004.92), Dennis J Selkoe ($1,431,450.00), Gene G Kinney ($5,751,653.72), Hideki Garren ($725,680.00), Karin L Walker ($1,647,309.72), Lars Ekman ($3,404,784.30), Michael J Malecek ($1,135,200.00), Richard T Collier ($1,338,450.00), Shane Cooke ($2,280,000.00), Tran Nguyen ($12,582,994.80), and Wagner M Zago ($5,318,787.50). How much insider selling is happening at Prothena? Insiders have sold a total of 891,012 Prothena shares in the last 24 months for a total of $47,653,354.64 sold. More Insider Trading Tools from MarketBeat Related Companies: BPMC Insider Ownership RARE Insider Ownership RETA Insider Ownership ARWR Insider Ownership CYTK Insider Ownership FOLD Insider Ownership PTCT Insider Ownership IMGN Insider Ownership AXSM Insider Ownership ZLAB Insider Ownership Insider Tracking Tools: CEO Purchases/Sales CFO Purchases/Sales Top Insider Buying Stocks Top Insider Selling Stocks Insider Trades Screener Insider Trades Newsletter Insider Trading By Country: U.S. Insider Trading Activity Canadian Insider Trading Activity U.K. Insider Trading Activity Australia Insider Trading Activity Latest Articles: Time To Buy Regional Banks? Insider Buying Says Yes2 Cheap Stocks And 1 Cheap Sector The Insiders Are BuyingTyson Insiders Buy Shares At Multi-Year Low3 High-Yield Banks Insiders Are Buying Insiders Drive Volatility For Keurig Dr Pepper This page (NASDAQ:PRTA) was last updated on 6/9/2023 by MarketBeat.com Staff Adding Choose a watchlist: Watchlist Adding You have already added five stocks to your watchlist. Upgrade to MarketBeat All Access to add more stocks to your watchlist. Adding Prothena Co. plc Please log in to your account or sign up in order to add this asset to your watchlist. Get 30 Days of MarketBeat All Access Free Sign up for MarketBeat All Access to gain access to MarketBeat's full suite of research tools: Best-in-Class Portfolio Monitoring View the latest news, buy/sell ratings, SEC filings and insider transactions for your stocks. Compare your portfolio performance to leading indices and get personalized stock ideas based on your portfolio. 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