PRTA Insider Trading

Insider Ownership Percentage: 28.10%
Insider Buying (Last 12 Months): $0.00
Insider Selling (Last 12 Months): $8,484,602.52

Prothena Insider Trading History Chart

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

Skip ChartChart Data in Insider Trading History Table

Prothena Share Price & Price History

Current Price: $22.49
Price Change: Price Decrease of -0.14 (-0.62%)
As of 05/21/2024 10:51 AM ET

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

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

Prothena Insider Trading History

Transaction DateInsider NameTitleBuy/SellNumber of SharesAverage Share PriceTotal TransactionShares Held After TransactionDetails
1/24/2024Karin L. WalkerCAOSell5,000$34.00$170,000.00View SEC Filing Icon  
12/20/2023Karin L. WalkerCAOSell5,000$37.19$185,950.00View SEC Filing Icon  
11/30/2023Karin L. WalkerCAOSell5,000$34.00$170,000.00View SEC Filing Icon  
10/25/2023Karin L. WalkerCAOSell5,000$41.04$205,200.00View SEC Filing Icon  
10/11/2023Brandon S. SmithCOOSell4,000$46.75$187,000.00View SEC Filing Icon  
10/4/2023Carol D. KarpinsiderSell5,000$46.62$233,100.00View SEC Filing Icon  
9/27/2023Michael J. MalecekinsiderSell5,000$47.38$236,900.00View SEC Filing Icon  
9/19/2023Karin L. WalkerCAOSell5,000$52.36$261,800.00View SEC Filing Icon  
9/13/2023Brandon S. SmithCOOSell4,000$55.49$221,960.00View SEC Filing Icon  
9/13/2023Hideki GarreninsiderSell2,000$55.48$110,960.00View SEC Filing Icon  
9/6/2023Carol D. KarpinsiderSell5,000$54.76$273,800.00View SEC Filing Icon  
8/30/2023Michael J. MalecekinsiderSell5,000$55.01$275,050.00View SEC Filing Icon  
8/18/2023Karin L. WalkerCAOSell5,000$57.18$285,900.00View SEC Filing Icon  
8/16/2023Brandon S. SmithCOOSell4,000$58.71$234,840.00View SEC Filing Icon  
8/16/2023Hideki GarreninsiderSell2,000$58.74$117,480.00View SEC Filing Icon  
8/2/2023Wagner M. ZagoinsiderSell4,000$67.05$268,200.00View SEC Filing Icon  
7/26/2023Michael J. MalecekinsiderSell5,000$62.33$311,650.00View SEC Filing Icon  
7/19/2023Karin L. WalkerCAOSell5,000$69.19$345,950.00View SEC Filing Icon  
7/12/2023Brandon S. SmithCOOSell4,000$67.51$270,040.00View SEC Filing Icon  
7/12/2023Hideki GarreninsiderSell2,000$67.51$135,020.00View SEC Filing Icon  
7/5/2023Carol D. KarpinsiderSell5,000$68.13$340,650.00View SEC Filing Icon  
7/3/2023Dennis J SelkoeDirectorSell5,000$67.43$337,150.002,845View SEC Filing Icon  
6/28/2023Michael J. MalecekinsiderSell5,000$69.82$349,100.00View SEC Filing Icon  
6/16/2023Hideki GarreninsiderSell7,331$74.00$542,494.00View SEC Filing Icon  
6/14/2023Brandon S. SmithCOOSell5,333$73.98$394,535.34View SEC Filing Icon  
6/14/2023Hideki GarreninsiderSell4,669$74.22$346,533.18View SEC Filing Icon  
6/7/2023Wagner M. ZagoinsiderSell19,000$71.06$1,350,140.00View SEC Filing Icon  
5/31/2023Michael J. MalecekinsiderSell5,000$64.64$323,200.00View SEC Filing Icon  
5/19/2023Karin L. WalkerCAOSell5,000$74.00$370,000.00View SEC Filing Icon  
5/17/2023Gene G KinneyCEOSell45,000$73.70$3,316,500.0012,793View SEC Filing Icon  
5/17/2023Tran NguyenCFOSell95,000$73.99$7,029,050.003,200View SEC Filing Icon  
5/3/2023Dennis J SelkoeDirectorSell15,000$57.00$855,000.002,845View SEC Filing Icon  
4/26/2023Michael J. MalecekinsiderSell5,000$53.46$267,300.00View SEC Filing Icon  
4/19/2023Karin L. WalkerCAOSell5,000$52.90$264,500.00View SEC Filing Icon  
3/29/2023Michael J. MalecekinsiderSell5,000$49.02$245,100.00View SEC Filing Icon  
3/20/2023Karin L. WalkerCAOSell5,000$47.72$238,600.00View SEC Filing Icon  
3/15/2023Karin L. WalkerCAOSell20,000$48.42$968,400.00View SEC Filing Icon  
3/15/2023Michael J. MalecekinsiderSell15,000$48.44$726,600.00View SEC Filing Icon  
3/15/2023Tran NguyenCFOSell10,000$48.43$484,300.003,200View SEC Filing Icon  
2/15/2023Tran NguyenCFOSell10,000$53.34$533,400.003,200View SEC Filing Icon  
1/18/2023Tran NguyenCFOSell10,000$55.53$555,300.003,200View SEC Filing Icon  
1/10/2023Shane CookeDirectorSell5,000$52.92$264,600.00View SEC Filing Icon  
1/5/2023Richard T CollierDirectorSell5,000$52.67$263,350.001,219View SEC Filing Icon  
1/3/2023Lars EkmanInsiderSell15,834$55.98$886,387.32243View SEC Filing Icon  
12/21/2022Tran NguyenCFOSell10,000$58.97$589,700.003,200View SEC Filing Icon  
12/12/2022Shane CookeDirectorSell5,000$61.04$305,200.00View SEC Filing Icon  
12/5/2022Richard T CollierDirectorSell5,000$62.07$310,350.001,219View SEC Filing Icon  
11/30/2022Michael J. MalecekinsiderSell5,000$62.28$311,400.00243View SEC Filing Icon  
11/23/2022Tran NguyenCFOSell10,000$61.09$610,900.003,200View SEC Filing Icon  
11/18/2022Karin L. WalkerCAOSell10,000$57.07$570,700.00View SEC Filing Icon  
11/10/2022Shane CookeDirectorSell5,000$56.17$280,850.00View SEC Filing Icon  
11/7/2022Richard T CollierDirectorSell5,000$55.62$278,100.001,219View SEC Filing Icon  
11/1/2022Lars EkmanInsiderSell15,833$62.88$995,579.04243View SEC Filing Icon  
10/27/2022Michael J. MalecekinsiderSell20,000$62.00$1,240,000.00View SEC Filing Icon  
10/24/2022Karin L. WalkerCAOSell20,000$57.23$1,144,600.00View SEC Filing Icon  
10/19/2022Tran NguyenCFOSell10,000$56.44$564,400.003,200View SEC Filing Icon  
10/10/2022Shane CookeDirectorSell5,000$55.91$279,550.00View SEC Filing Icon  
10/5/2022Richard T CollierDirectorSell5,000$57.92$289,600.001,219View SEC Filing Icon  
10/3/2022Hideki GarreninsiderSell4,000$60.90$243,600.00243View SEC Filing Icon  
9/28/2022Gene G KinneyCEOSell16,412$53.38$876,072.5612,793View SEC Filing Icon  
9/28/2022Lars EkmanInsiderSell31,666$48.09$1,522,817.94243View SEC Filing Icon  
9/28/2022Shane CookeDirectorSell10,000$48.09$480,900.001,219View SEC Filing Icon  
9/21/2022Gene G KinneyCEOSell2,720$32.02$87,094.4012,793View SEC Filing Icon  
9/21/2022Tran NguyenCFOSell10,000$30.75$307,500.003,200View SEC Filing Icon  
9/15/2022Hideki GarreninsiderSell4,000$30.00$120,000.00View SEC Filing Icon  
8/24/2022Tran NguyenCFOSell10,000$30.17$301,700.003,200View SEC Filing Icon  
8/17/2022Gene G KinneyCEOSell2,181$32.03$69,857.4312,793View SEC Filing Icon  
8/12/2022Gene G KinneyCEOSell20,284$32.16$652,333.4412,793View SEC Filing Icon  
8/10/2022Gene G KinneyCEOSell991$32.01$31,721.9112,793View SEC Filing Icon  
8/5/2022Gene G KinneyCEOSell21,506$32.83$706,041.9812,793View SEC Filing Icon  
8/1/2022Hideki GarreninsiderSell4,000$30.52$122,080.00View SEC Filing Icon  
7/27/2022Gene G KinneyCEOSell376$32.00$12,032.0012,793View SEC Filing Icon  
7/22/2022Tran NguyenCFOSell7,320$32.55$238,266.003,200View SEC Filing Icon  
7/20/2022Shane CookeDirectorSell15,000$32.90$493,500.00View SEC Filing Icon  
7/20/2022Tran NguyenCFOSell42,120$32.49$1,368,478.803,200View SEC Filing Icon  
7/6/2022Hideki GarreninsiderSell8,000$30.00$240,000.00View SEC Filing Icon  
5/5/2022Ecor1 Capital, LlcMajor ShareholderBuy1,062,736$29.02$30,840,598.7211,584,280View SEC Filing Icon  
4/11/2022Shane CookeDirectorSell5,000$35.08$175,400.00View SEC Filing Icon  
4/5/2022Richard T CollierDirectorSell5,000$39.41$197,050.001,219View SEC Filing Icon  
1/12/2022Ecor1 Capital, LlcMajor ShareholderBuy300,000$37.50$11,250,000.00View SEC Filing Icon  
1/3/2022Dennis J SelkoeDirectorSell5,000$47.45$237,250.00View SEC Filing Icon  
11/23/2021Karin L. WalkerCAOSell4,519$57.88$261,559.72View SEC Filing Icon  
11/19/2021Michael J. MalecekInsiderSell10,000$55.00$550,000.00View SEC Filing Icon  
11/1/2021Carol D. KarpInsiderSell10,000$57.18$571,800.00View SEC Filing Icon  
10/27/2021Michael J. MalecekInsiderSell10,000$58.52$585,200.00View SEC Filing Icon  
10/20/2021Karin L. WalkerCAOSell23,000$60.25$1,385,750.00View SEC Filing Icon  
10/1/2021Carol D. KarpInsiderSell10,000$68.23$682,300.00View SEC Filing Icon  
10/1/2021Dennis J SelkoeDirectorSell5,000$67.84$339,200.00View SEC Filing Icon  
7/30/2021Dennis J. SelkoeDirectorSell5,000$49.47$247,350.006,345View SEC Filing Icon  
7/14/2021Christopher S. HenneyDirectorSell11,108$55.46$616,049.6811,108View SEC Filing Icon  
7/12/2021Christopher S. HenneyDirectorSell23,892$55.51$1,326,244.9217,500View SEC Filing Icon  
6/25/2021Christopher S. HenneyDirectorSell12,000$47.73$572,760.0012,000View SEC Filing Icon  
6/22/2021Wagner M. ZagoInsiderSell115,250$46.15$5,318,787.5015,000View SEC Filing Icon  
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SEC Filings (Institutional Ownership Changes) for Prothena (NASDAQ:PRTA)

97.08% of Prothena stock is owned by institutions. Institutional ownership can be a sign of analyst confidence in the fundamentals of the stock.

Institutional Buying and Selling by Quarter

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

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

Prothena Institutional Trading History

Reporting DateHedge FundShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
5/17/2024Artal Group S.A.1,001,360$24.80M0.6%+99.7%1.862%Search for SEC Filing on Google Icon
5/16/2024California State Teachers Retirement System40,442$1M0.0%-5.3%0.075%Search for SEC Filing on Google Icon
5/16/2024Janus Henderson Group PLC1,309,590$32.44M0.0%-35.7%2.436%Search for SEC Filing on Google Icon
5/15/2024First Light Asset Management LLC444,953$11.02M0.8%-59.1%0.828%Search for SEC Filing on Google Icon
5/15/2024Price T Rowe Associates Inc. MD4,201,771$104.08M0.0%-0.8%7.814%Search for SEC Filing on Google Icon
5/13/2024Seven Eight Capital LP41,120$1.02M0.1%-27.8%0.076%Search for SEC Filing on Google Icon
5/10/2024Vanguard Group Inc.1,125,283$27.87M0.0%+5.1%2.095%Search for SEC Filing on Google Icon
5/9/2024State Board of Administration of Florida Retirement System11,286$0.28M0.0%-5.3%0.021%Search for SEC Filing on Google Icon
5/8/2024Focused Wealth Management Inc10,129$0.25M0.0%+7,751.9%0.019%Search for SEC Filing on Google Icon
5/8/2024ProShare Advisors LLC11,346$0.28M0.0%+8.9%0.021%Search for SEC Filing on Google Icon
5/8/2024Headlands Technologies LLC3,881$96K0.0%N/A0.007%Search for SEC Filing on Google Icon
5/7/2024Susquehanna Fundamental Investments LLC13,818$0.34M0.0%N/A0.026%Search for SEC Filing on Google Icon
5/7/2024SG Americas Securities LLC16,720$0.41M0.0%-87.7%0.031%Search for SEC Filing on Google Icon
5/1/2024BNP Paribas Financial Markets32,253$0.80M0.0%-65.4%0.060%Search for SEC Filing on Google Icon
4/29/2024Principal Financial Group Inc.11,737$0.29M0.0%-62.1%0.022%Search for SEC Filing on Google Icon
4/29/2024China Universal Asset Management Co. Ltd.10,360$0.26M0.0%+67.0%0.019%Search for SEC Filing on Google Icon
4/29/2024HighMark Wealth Management LLC16,502$0.41M0.3%+124.5%0.031%Search for SEC Filing on Google Icon
4/26/2024Pinnacle Associates Ltd.125,264$3.10M0.0%-0.4%0.233%Search for SEC Filing on Google Icon
3/22/2024PNC Financial Services Group Inc.1,544$56K0.0%+265.9%0.003%Search for SEC Filing on Google Icon
3/5/2024Wellington Management Group LLP2,594,102$94.27M0.0%+21.1%4.829%Search for SEC Filing on Google Icon
2/16/2024Price T Rowe Associates Inc. MD4,237,351$153.99M0.0%+10.9%7.895%Search for SEC Filing on Google Icon
2/15/2024PFM Health Sciences LP189,744$6.90M0.4%-77.3%0.354%Search for SEC Filing on Google Icon
2/15/2024Granahan Investment Management LLC417,157$15.16M0.5%+19.9%0.777%Search for SEC Filing on Google Icon
2/15/2024Boxer Capital LLC665,000$24.17M1.2%+6.4%1.239%Search for SEC Filing on Google Icon
2/14/2024ADAR1 Capital Management LLC6,102$0.22M0.1%N/A0.011%Search for SEC Filing on Google Icon
2/14/2024First Light Asset Management LLC1,088,801$39.57M3.2%-27.1%2.029%Search for SEC Filing on Google Icon
2/14/2024Seven Eight Capital LP56,946$2.07M0.2%N/A0.106%Search for SEC Filing on Google Icon
2/14/2024Sectoral Asset Management Inc.46,777$1.70M0.7%-72.9%0.087%Search for SEC Filing on Google Icon
2/13/2024DCF Advisers LLC84,000$3.05M1.7%+1.3%0.157%Search for SEC Filing on Google Icon
2/13/2024Armistice Capital LLC278,000$10.10M0.1%N/A0.518%Search for SEC Filing on Google Icon
2/13/2024Rafferty Asset Management LLC207,419$7.54M0.0%+32.2%0.386%Search for SEC Filing on Google Icon
2/12/2024TD Asset Management Inc146,538$5.33M0.0%-15.1%0.273%Search for SEC Filing on Google Icon
2/9/2024Trexquant Investment LP67,683$2.46M0.1%+19.1%0.126%Search for SEC Filing on Google Icon
2/9/2024Dynamic Technology Lab Private Ltd26,476$0.96M0.1%N/A0.049%Search for SEC Filing on Google Icon
2/8/2024Thornburg Investment Management Inc.25,591$0.93M0.0%-9.5%0.048%Search for SEC Filing on Google Icon
2/7/2024Principal Financial Group Inc.30,973$1.13M0.0%+21.1%0.058%Search for SEC Filing on Google Icon
2/7/2024Dimensional Fund Advisors LP867,635$31.53M0.0%-21.3%1.617%Search for SEC Filing on Google Icon
2/7/2024Jump Financial LLC6,457$0.24M0.0%-89.8%0.012%Search for SEC Filing on Google Icon
2/7/2024Teacher Retirement System of Texas9,266$0.34M0.0%-17.5%0.017%Search for SEC Filing on Google Icon
2/7/2024E Fund Management Co. Ltd.11,096$0.40M0.0%+37.7%0.021%Search for SEC Filing on Google Icon
2/6/2024Charles Schwab Investment Management Inc.313,230$11.38M0.0%+1.5%0.584%Search for SEC Filing on Google Icon
2/6/2024Swiss National Bank79,200$2.88M0.0%-9.0%0.148%Search for SEC Filing on Google Icon
2/1/2024New York State Common Retirement Fund33,648$1.22M0.0%+8.6%0.063%Search for SEC Filing on Google Icon
2/1/2024Handelsbanken Fonder AB61,400$2.23M0.0%+4.2%0.114%Search for SEC Filing on Google Icon
1/30/2024HealthInvest Partners AB8,342$0.30M0.2%N/A0.016%Search for SEC Filing on Google Icon
1/30/2024Zurcher Kantonalbank Zurich Cantonalbank9,563$0.35M0.0%+28.1%0.018%Search for SEC Filing on Google Icon
1/30/2024Strs Ohio10,700$0.39M0.0%+55.1%0.020%Search for SEC Filing on Google Icon
1/25/2024Allspring Global Investments Holdings LLC1,947$71K0.0%-37.1%0.004%Search for SEC Filing on Google Icon
1/25/2024Nisa Investment Advisors LLC900$33K0.0%-40.4%0.002%Search for SEC Filing on Google Icon
1/24/2024Mirae Asset Global Investments Co. Ltd.27,751$1.01M0.0%+8.2%0.052%Search for SEC Filing on Google Icon
1/24/2024China Universal Asset Management Co. Ltd.6,203$0.23M0.0%+351.1%0.012%Search for SEC Filing on Google Icon
1/19/2024Pinnacle Associates Ltd.125,747$4.57M0.1%+0.6%0.234%Search for SEC Filing on Google Icon
1/12/2024SG Americas Securities LLC135,857$4.94M0.0%+46.9%0.253%Search for SEC Filing on Google Icon
12/18/2023Vanguard Group Inc.1,030,774$49.74M0.0%-1.0%1.921%Search for SEC Filing on Google Icon
12/7/2023Hudson Bay Capital Management LP32,500$1.57M0.0%N/A0.061%Search for SEC Filing on Google Icon
12/1/2023Wellington Management Group LLP2,141,647$103.33M0.0%-3.1%3.990%Search for SEC Filing on Google Icon
11/15/2023Rock Springs Capital Management LP614,298$29.64M0.8%-18.5%1.145%Search for SEC Filing on Google Icon
11/15/2023Sectoral Asset Management Inc.172,407$8.32M1.6%+13.5%0.321%Search for SEC Filing on Google Icon
11/15/2023Alps Advisors Inc.39,524$1.91M0.0%+1.9%0.074%Search for SEC Filing on Google Icon
11/15/2023Affinity Asset Advisors LLC79,214$3.82M1.1%-20.8%0.148%Search for SEC Filing on Google Icon
11/14/2023Corton Capital Inc.9,091$0.44M0.2%+20.7%0.017%Search for SEC Filing on Google Icon
11/14/2023Avidity Partners Management LP382,305$18.45M0.7%-28.5%0.712%Search for SEC Filing on Google Icon
11/14/2023Qube Research & Technologies Ltd84,653$4.09M0.0%+104.5%0.158%Search for SEC Filing on Google Icon
11/14/2023Trexquant Investment LP56,843$2.74M0.1%N/A0.106%Search for SEC Filing on Google Icon
11/14/2023Profund Advisors LLC26,634$1.29M0.1%+20.8%0.050%Search for SEC Filing on Google Icon
11/13/2023Connor Clark & Lunn Investment Management Ltd.127,775$6.17M0.0%+16.0%0.238%Search for SEC Filing on Google Icon
11/13/2023Algert Global LLC28,000$1.35M0.1%N/A0.052%Search for SEC Filing on Google Icon
11/13/2023Northern Trust Corp409,847$19.78M0.0%-0.5%0.764%Search for SEC Filing on Google Icon
11/13/2023Healthcare of Ontario Pension Plan Trust Fund30,500$1.47M0.0%N/A0.057%Search for SEC Filing on Google Icon
11/13/2023Mariner LLC167,932$8.10M0.0%+24.3%0.313%Search for SEC Filing on Google Icon
11/13/2023Silverarc Capital Management LLC26,629$1.29M0.4%-46.4%0.050%Search for SEC Filing on Google Icon
11/13/2023Aigen Investment Management LP34,890$1.68M0.3%N/A0.065%Search for SEC Filing on Google Icon
11/13/2023FMR LLC8,030,290$387.46M0.0%+1.5%14.962%Search for SEC Filing on Google Icon
11/13/2023Rafferty Asset Management LLC156,840$7.57M0.0%+31.2%0.292%Search for SEC Filing on Google Icon
11/13/2023E Fund Management Co. Ltd.8,059$0.39M0.0%+25.4%0.015%Search for SEC Filing on Google Icon
11/9/2023Rhumbline Advisers62,451$3.01M0.0%+2.7%0.116%Search for SEC Filing on Google Icon
11/9/2023Deutsche Bank AG22,613$1.09M0.0%+14.5%0.042%Search for SEC Filing on Google Icon
11/9/2023Citigroup Inc.67,930$3.28M0.0%+42.9%0.127%Search for SEC Filing on Google Icon
11/9/2023Headlands Technologies LLC1,531$74K0.0%N/A0.003%Search for SEC Filing on Google Icon
11/9/2023UBS Group AG45,252$2.18M0.0%+102.2%0.084%Search for SEC Filing on Google Icon
11/8/2023State of New Jersey Common Pension Fund D45,952$2.22M0.0%+27.4%0.086%Search for SEC Filing on Google Icon
11/8/2023Charles Schwab Investment Management Inc.308,537$14.89M0.0%-1.3%0.576%Search for SEC Filing on Google Icon
11/8/2023Swiss National Bank87,000$4.20M0.0%+1.3%0.163%Search for SEC Filing on Google Icon
11/8/2023Moody Aldrich Partners LLC23,904$1.15M0.2%-36.4%0.045%Search for SEC Filing on Google Icon
11/8/2023Oppenheimer & Co. Inc.7,908$0.38M0.0%+3.9%0.015%Search for SEC Filing on Google Icon
11/7/2023Barclays PLC86,035$4.15M0.0%+26.9%0.161%Search for SEC Filing on Google Icon
11/7/2023Fox Run Management L.L.C.9,617$0.46M0.1%N/A0.018%Search for SEC Filing on Google Icon
11/7/2023Jump Financial LLC63,117$3.05M0.1%+167.1%0.118%Search for SEC Filing on Google Icon
11/6/2023Victory Capital Management Inc.8,781$0.42M0.0%-66.6%0.016%Search for SEC Filing on Google Icon
11/2/2023Principal Financial Group Inc.25,582$1.23M0.0%-65.6%0.048%Search for SEC Filing on Google Icon
10/31/2023Teacher Retirement System of Texas11,231$0.54M0.0%+4.9%0.021%Search for SEC Filing on Google Icon
10/31/2023Jennison Associates LLC55,579$2.68M0.0%+12.9%0.104%Search for SEC Filing on Google Icon
10/31/2023China Universal Asset Management Co. Ltd.1,375$66K0.0%+99.0%0.003%Search for SEC Filing on Google Icon
10/27/2023Allspring Global Investments Holdings LLC3,096$0.15M0.0%+58.3%0.006%Search for SEC Filing on Google Icon
10/27/2023TD Asset Management Inc172,682$8.33M0.0%+93.1%0.323%Search for SEC Filing on Google Icon
10/26/2023Mirae Asset Global Investments Co. Ltd.25,652$1.24M0.0%+14.4%0.048%Search for SEC Filing on Google Icon
10/26/2023Strs Ohio6,900$0.33M0.0%-46.9%0.013%Search for SEC Filing on Google Icon
10/25/2023Zurcher Kantonalbank Zurich Cantonalbank7,464$0.36M0.0%+12.0%0.014%Search for SEC Filing on Google Icon
10/24/2023Bank of New York Mellon Corp499,382$24.10M0.0%-2.9%0.933%Search for SEC Filing on Google Icon
10/24/2023Raymond James & Associates8,167$0.39M0.0%+98.4%0.015%Search for SEC Filing on Google Icon
Data available starting January 2016

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Prothena Corporation plc, a late-stage clinical biotechnology company, focuses on discovery and development of novel therapies to treat diseases caused by protein dysregulation in the United States. The company is involved in developing birtamimab, an investigational humanized antibody that is in Phase III clinical trial for the treatment of AL amyloidosis; Prasinezumab, a humanized monoclonal antibody, for the treatment of Parkinson's disease and other related synucleinopathies which is in Phase IIb clinical trial; NNC6019 that is in Phase lI clinical trial for the treatment of ATTR amyloidosis; and BMS-986446 and PRX012, which is in Phase I clinical trial for the treatment of Alzheimer's disease. Its discovery and preclinical programs include PRX123, a dual Aß-Tau vaccine for the treatment and prevention of Alzheimer's disease; and PRX019 for the treatment of neurogenerative diseases, as well as TDP-43 for the treatment of amyotrophic lateral sclerosis. Prothena Corporation plc has a license, development, and commercialization agreement with F. Hoffmann-La Roche Ltd. and Hoffmann-La Roche Inc. to develop and commercialize antibodies that target a-synuclein, including prasinezumab; and a collaboration agreement with Bristol-Myers Squibb to develop and commercialize antibodies targeting tau, TDP-43. The company was incorporated in 2012 and is based in Dublin, Ireland.
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Today's Range

Now: $22.49
Low: $22.31
High: $22.62

50 Day Range

MA: $23.22
Low: $20.34
High: $28.60

52 Week Range

Now: $22.49
Low: $19.65
High: $77.13

Volume

8,751 shs

Average Volume

707,654 shs

Market Capitalization

$1.21 billion

P/E Ratio

N/A

Dividend Yield

N/A

Beta

0.3

Who are the company insiders with the largest holdings of Prothena?

Prothena's top insider shareholders include:
  1. Gene G Kinney (CEO)
  2. Tran Nguyen (CFO)
  3. Dennis J Selkoe (Director)
  4. Richard T Collier (Director)
  5. Shane Cooke (Director)
  6. Hideki Garren (Insider)
  7. Lars Ekman (Insider)
  8. Michael J Malecek (Insider)
  9. Brandon S Smith (COO)
  10. Carol D Karp (Insider)
  11. Karin L Walker (CAO)
  12. Wagner M Zago (Insider)
Learn More about top insider investors at Prothena.

Who are the major institutional investors of Prothena?

Prothena's top institutional shareholders include:
  1. Price T Rowe Associates Inc. MD — 7.81%
  2. Janus Henderson Group PLC — 2.44%
  3. Vanguard Group Inc. — 2.09%
  4. Artal Group S.A. — 1.86%
  5. First Light Asset Management LLC — 0.83%
  6. Pinnacle Associates Ltd. — 0.23%
Learn More about top institutional investors of Prothena stock.

Which major investors are selling Prothena stock?

During the previous quarter, PRTA stock was sold by these institutional investors:
  1. Janus Henderson Group PLC
  2. First Light Asset Management LLC
  3. Ikarian Capital LLC
  4. SG Americas Securities LLC
  5. BNP Paribas Financial Markets
  6. Price T Rowe Associates Inc. MD
  7. Principal Financial Group Inc.
  8. Seven Eight Capital LP
Within the previous year, company insiders that have sold Prothena company stock include:
  1. Gene G Kinney (CEO)
  2. Tran Nguyen (CFO)
  3. Dennis J Selkoe (Director)
  4. Richard T Collier (Director)
  5. Shane Cooke (Director)
  6. Hideki Garren (Insider)
  7. Lars Ekman (Insider)
Learn More investors selling Prothena stock.

Which major investors are buying Prothena stock?

In the last quarter, PRTA stock was acquired by institutional investors including:
  1. Artal Group S.A.
  2. Vanguard Group Inc.
  3. Susquehanna Fundamental Investments LLC
  4. Focused Wealth Management Inc
  5. HighMark Wealth Management LLC
  6. China Universal Asset Management Co. Ltd.
  7. Headlands Technologies LLC
  8. ProShare Advisors LLC