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PRTA Insider Trading (Prothena)

Insider Ownership Percentage: 30.40%
Insider Buying (Last 12 Months): $19,090,870.00
Insider Selling (Last 12 Months): $12,649,271.82

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: $46.59
Price Change: Price Decrease of -3.08 (-6.20%)
As of 12/3/2021 05:00 PM 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
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Prothena Insider Trading History

Transaction DateInsider NameTitleBuy/SellNumber of SharesAverage Share PriceTotal TransactionShares Held After TransactionDetails
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  
3/24/2021Ecor1 Capital, LlcMajor ShareholderBuy875,000$20.75$18,156,250.00View SEC Filing Icon  
2/23/2021Ecor1 Capital, LlcMajor ShareholderBuy44,400$21.05$934,620.00View SEC Filing Icon  
2/18/2021Wagner M. ZagoInsiderSell7,540$25.50$192,270.007,540View SEC Filing Icon  
See Full Table
Insider Buying at Prothena?
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SEC Filings (Institutional Ownership Changes) for Prothena (NASDAQ:PRTA)

91.48% 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
11/18/2021Bank of New York Mellon Corp137,287$9.78M0.0%+1.4%0.295%Search for SEC Filing on Google Icon
11/16/2021Summit Trail Advisors LLC3,000$0.21M0.0%N/A0.006%Search for SEC Filing on Google Icon
11/16/2021Schonfeld Strategic Advisors LLC3,765$0.27M0.0%N/A0.008%Search for SEC Filing on Google Icon
11/16/2021Captrust Financial Advisors2,003$0.14M0.0%+204.9%0.004%Search for SEC Filing on Google Icon
11/16/2021BNP Paribas Arbitrage SA6,754$0.48M0.0%+442.1%0.014%Search for SEC Filing on Google Icon
11/16/2021Two Sigma Advisers LP473,700$33.74M0.1%+12.2%1.017%Search for SEC Filing on Google Icon
11/16/2021Two Sigma Investments LP321,166$22.88M0.1%-4.7%0.689%Search for SEC Filing on Google Icon
11/16/2021UBS Group AG77,517$5.52M0.0%+4,564.1%0.166%Search for SEC Filing on Google Icon
11/16/2021Voloridge Investment Management LLC127,257$9.07M0.1%+68.2%0.273%Search for SEC Filing on Google Icon
11/16/2021Millennium Management LLC151,669$10.80M0.0%-1.9%0.326%Search for SEC Filing on Google Icon
11/16/2021Boxer Capital LLC300,000$21.37M0.7%N/A0.644%Search for SEC Filing on Google Icon
11/15/2021Point72 Asset Management L.P.161,900$11.53M0.1%-4.1%0.347%Search for SEC Filing on Google Icon
11/15/2021Cubist Systematic Strategies LLC42,262$3.01M0.0%+53.5%0.091%Search for SEC Filing on Google Icon
11/15/2021California State Teachers Retirement System44,191$3.15M0.0%-6.0%0.095%Search for SEC Filing on Google Icon
11/15/2021Tudor Investment Corp Et Al27,280$1.94M0.0%-31.9%0.059%Search for SEC Filing on Google Icon
11/15/2021Rock Springs Capital Management LP710,430$50.60M1.1%-25.2%1.525%Search for SEC Filing on Google Icon
11/15/2021Marshall Wace LLP68,892$4.91M0.0%N/A0.148%Search for SEC Filing on Google Icon
11/15/2021Gotham Asset Management LLC18,173$1.29M0.1%+240.5%0.039%Search for SEC Filing on Google Icon
11/15/2021Royal Bank of Canada13,022$0.93M0.0%-77.2%0.028%Search for SEC Filing on Google Icon
11/15/2021Morgan Stanley62,180$4.43M0.0%+38.4%0.133%Search for SEC Filing on Google Icon
11/15/2021Invesco Ltd.347,424$24.75M0.0%+17.4%0.746%Search for SEC Filing on Google Icon
11/15/2021Virtus ETF Advisers LLC4,458$0.32M0.1%-5.0%0.010%Search for SEC Filing on Google Icon
11/15/2021Voya Investment Management LLC13,767$0.98M0.0%+2.1%0.030%Search for SEC Filing on Google Icon
11/15/2021Granahan Investment Management Inc. MA45,304$3.23M0.1%N/A0.097%Search for SEC Filing on Google Icon
11/15/2021Dimensional Fund Advisors LP1,579,648$112.52M0.0%-0.4%3.390%Search for SEC Filing on Google Icon
11/15/2021Ensign Peak Advisors Inc22,162$1.58M0.0%+25.7%0.048%Search for SEC Filing on Google Icon
11/15/2021Franklin Resources Inc.9,635$0.69M0.0%N/A0.021%Search for SEC Filing on Google Icon
11/15/2021GSA Capital Partners LLP3,611$0.26M0.0%N/A0.008%Search for SEC Filing on Google Icon
11/15/2021Hunter Perkins Capital Management LLC4,114$0.29M0.1%-29.1%0.009%Search for SEC Filing on Google Icon
11/12/2021Renaissance Technologies LLC257,200$18.32M0.0%+7.9%0.552%Search for SEC Filing on Google Icon
11/12/2021Jump Financial LLC27,800$1.98M0.1%N/A0.060%Search for SEC Filing on Google Icon
11/12/2021Arizona State Retirement System8,423$0.60M0.0%+10.9%0.018%Search for SEC Filing on Google Icon
11/12/2021Prosight Management LP323,300$23.03M12.7%-23.4%0.694%Search for SEC Filing on Google Icon
11/12/2021Macquarie Group Ltd.1,548$0.11M0.0%N/A0.003%Search for SEC Filing on Google Icon
11/12/2021The Manufacturers Life Insurance Company 17,283$1.23M0.0%-7.3%0.037%Search for SEC Filing on Google Icon
11/12/2021Advisory Research Inc.19,684$1.40M0.1%N/A0.042%Search for SEC Filing on Google Icon
11/12/2021Credit Suisse AG25,232$1.80M0.0%+12.5%0.054%Search for SEC Filing on Google Icon
11/12/2021Oppenheimer & Co. Inc.4,763$0.34M0.0%N/A0.010%Search for SEC Filing on Google Icon
11/12/2021EAM Global Investors LLC49,720$3.54M0.8%-29.2%0.107%Search for SEC Filing on Google Icon
11/12/2021EAM Investors LLC64,650$4.61M0.8%-38.2%0.139%Search for SEC Filing on Google Icon
11/12/2021Geode Capital Management LLC620,173$44.17M0.0%+10.1%1.331%Search for SEC Filing on Google Icon
11/12/2021Bellwether Advisors LLC17,846$1.27M0.4%N/A0.038%Search for SEC Filing on Google Icon
11/12/2021Connor Clark & Lunn Investment Management Ltd.6,690$0.48M0.0%N/A0.014%Search for SEC Filing on Google Icon
11/10/2021Alpha DNA Investment Management LLC19,389$1.38M0.9%N/A0.044%Search for SEC Filing on Google Icon
11/10/2021Goldman Sachs Group Inc.75,909$5.41M0.0%+3.6%0.172%Search for SEC Filing on Google Icon
11/10/2021Handelsbanken Fonder AB109,700$7.81M0.0%+10.0%0.248%Search for SEC Filing on Google Icon
11/10/2021Citigroup Inc.53,285$3.80M0.0%-5.4%0.121%Search for SEC Filing on Google Icon
11/10/2021Rafferty Asset Management LLC40,797$2.91M0.0%+19.4%0.092%Search for SEC Filing on Google Icon
11/10/2021O Shaughnessy Asset Management LLC2,048$0.15M0.0%N/A0.005%Search for SEC Filing on Google Icon
11/10/2021Alliancebernstein L.P.44,940$3.20M0.0%-9.3%0.102%Search for SEC Filing on Google Icon
11/10/2021Massachusetts Financial Services Co. MA42,706$3.04M0.0%-1.3%0.097%Search for SEC Filing on Google Icon
11/9/2021Teacher Retirement System of Texas4,809$0.34M0.0%N/A0.011%Search for SEC Filing on Google Icon
11/9/2021Barclays PLC18,036$1.28M0.0%+115.7%0.041%Search for SEC Filing on Google Icon
11/9/2021BlackRock Inc.3,769,704$268.52M0.0%+2.4%8.533%Search for SEC Filing on Google Icon
11/9/2021Platinum Investment Management Ltd.60,512$4.31M0.1%-40.6%0.137%Search for SEC Filing on Google Icon
11/9/2021Jennison Associates LLC14,271$1.02M0.0%N/A0.032%Search for SEC Filing on Google Icon
11/9/2021M&G Investment Management Ltd.20,004$1.42M0.0%N/A0.045%Search for SEC Filing on Google Icon
11/9/2021TD Asset Management Inc.126,894$9.04M0.0%+3.4%0.287%Search for SEC Filing on Google Icon
11/8/2021State Board of Administration of Florida Retirement System16,211$1.16M0.0%+1.1%0.037%Search for SEC Filing on Google Icon
11/8/2021Meeder Asset Management Inc.1,813$0.13M0.0%+13.7%0.004%Search for SEC Filing on Google Icon
11/8/2021Swiss National Bank68,300$4.87M0.0%+10.9%0.155%Search for SEC Filing on Google Icon
11/8/2021Russell Investments Group Ltd.3,496$0.25M0.0%N/A0.008%Search for SEC Filing on Google Icon
11/8/2021Los Angeles Capital Management LLC17,645$1.26M0.0%-48.8%0.040%Search for SEC Filing on Google Icon
11/5/2021Moors & Cabot Inc.22,119$1.65M0.1%N/A0.050%Search for SEC Filing on Google Icon
11/5/2021Advisor Group Holdings Inc.1,438$0.10M0.0%+1,129.1%0.003%Search for SEC Filing on Google Icon
11/4/2021Deutsche Bank AG31,648$2.25M0.0%+46.4%0.072%Search for SEC Filing on Google Icon
11/2/2021Raymond James & Associates4,700$0.34M0.0%+20.5%0.011%Search for SEC Filing on Google Icon
11/2/2021New York State Common Retirement Fund26,360$1.88M0.0%-12.5%0.060%Search for SEC Filing on Google Icon
11/2/2021Victory Capital Management Inc.3,913$0.28M0.0%N/A0.009%Search for SEC Filing on Google Icon
11/1/2021HighMark Wealth Management LLC1,796$0.13M0.1%-14.6%0.004%Search for SEC Filing on Google Icon
11/1/2021AE Wealth Management LLC8,670$0.62M0.0%N/A0.020%Search for SEC Filing on Google Icon
11/1/2021SG Americas Securities LLC116,076$8.27M0.0%+1,058.4%0.263%Search for SEC Filing on Google Icon
10/29/2021Amalgamated Bank5,835$0.42M0.0%-3.7%0.013%Search for SEC Filing on Google Icon
10/29/2021Harvest Investment Services LLC7,228$0.51M0.2%N/A0.016%Search for SEC Filing on Google Icon
10/28/2021Signaturefd LLC420$30K0.0%-33.1%0.001%Search for SEC Filing on Google Icon
10/28/2021Navellier & Associates Inc.7,180$0.51M0.1%N/A0.016%Search for SEC Filing on Google Icon
10/27/2021State of New Jersey Common Pension Fund D44,541$3.17M0.0%N/A0.101%Search for SEC Filing on Google Icon
10/22/2021Strs Ohio13,700$0.98M0.0%+1,145.5%0.031%Search for SEC Filing on Google Icon
10/21/2021Hillsdale Investment Management Inc.93,500$6.66M0.5%+80.5%0.212%Search for SEC Filing on Google Icon
10/21/2021Xcel Wealth Management LLC4,000$0.29M0.1%N/A0.009%Search for SEC Filing on Google Icon
10/21/2021Virginia Retirement Systems ET AL10,900$0.78M0.0%-18.7%0.025%Search for SEC Filing on Google Icon
10/20/2021Robeco Institutional Asset Management B.V.16,960$1.21M0.0%N/A0.038%Search for SEC Filing on Google Icon
10/19/2021Pinnacle Associates Ltd.151,776$10.81M0.2%-26.3%0.344%Search for SEC Filing on Google Icon
10/12/2021Focused Wealth Management Inc2,392$0.17M0.0%-48.6%0.005%Search for SEC Filing on Google Icon
9/17/2021Virtu Financial LLC11,174$0.57M0.1%N/A0.025%Search for SEC Filing on Google Icon
9/3/2021Parametric Portfolio Associates LLC93,877$4.83M0.0%+55.2%0.213%Search for SEC Filing on Google Icon
8/23/2021Morgan Stanley44,940$2.31M0.0%+214.8%0.102%Search for SEC Filing on Google Icon
8/17/2021Wells Fargo & Company MN15,116$0.78M0.0%-34.2%0.034%Search for SEC Filing on Google Icon
8/17/2021Perceptive Advisors LLC100,000$5.14M0.1%N/A0.226%Search for SEC Filing on Google Icon
8/17/2021Invesco Ltd.295,859$15.21M0.0%+29.6%0.670%Search for SEC Filing on Google Icon
8/17/2021Old Well Partners LLC7,924$0.41M0.2%-22.2%0.018%Search for SEC Filing on Google Icon
8/17/2021Price T Rowe Associates Inc. MD5,823,085$299.37M0.0%+75.8%13.182%Search for SEC Filing on Google Icon
8/17/2021Prudential Financial Inc.57,179$2.94M0.0%-21.7%0.129%Search for SEC Filing on Google Icon
8/16/2021Squarepoint Ops LLC25,886$1.33M0.0%+81.8%0.059%Search for SEC Filing on Google Icon
8/16/2021AQR Capital Management LLC4,917$0.25M0.0%N/A0.011%Search for SEC Filing on Google Icon
8/16/2021Bank of America Corp DE16,143$0.83M0.0%-78.7%0.037%Search for SEC Filing on Google Icon
8/16/2021Amalgamated Bank6,060$0.31M0.0%N/A0.014%Search for SEC Filing on Google Icon
8/16/2021UBS Asset Management Americas Inc.402,168$20.68M0.0%+14.1%0.910%Search for SEC Filing on Google Icon
8/16/2021Point72 Asset Management L.P.168,800$8.68M0.0%N/A0.382%Search for SEC Filing on Google Icon
8/16/2021Cubist Systematic Strategies LLC27,530$1.42M0.0%+59.9%0.062%Search for SEC Filing on Google Icon
Data available starting January 2016

See Full Table
Prothena logo
Prothena Corp. Plc is a clinical-stage neuroscience company. It focuses on the discovery and development of novel therapies to change the course of devastating diseases. The firm's clinical pipeline includes both wholly-owned and partnered programs being developed for the potential treatment of diseases including AL amyloidosis, ATTR amyloidosis, Alzheimer's disease, Parkinson's disease and other neurodegenerative diseases. The company was founded in December 1969 and is headquartered in Dublin, Ireland.
Read More on Prothena

Today's Range

Now: $46.59
Low: $45.28
High: $50.35

50 Day Range

MA: $60.28
Low: $46.59
High: $77.39

52 Week Range

Now: $46.59
Low: $10.72
High: $79.75

Volume

420,267 shs

Average Volume

416,221 shs

Market Capitalization

$2.17 billion

P/E Ratio

45.23

Dividend Yield

N/A

Beta

1.24

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

Prothena's top insider shareholders include:
  1. Christopher S Henney (Director)
  2. Wagner M Zago (Insider)
  3. Christopher S Henney (Director)
  4. Dennis J Selkoe (Director)
  5. Carol D Karp (Insider)
  6. Dennis J Selkoe (Director)
  7. Ecor1 Capital, Llc (Major Shareholder)
  8. Karin L Walker (CAO)
  9. Michael J Malecek (Insider)

Who are the major institutional investors of Prothena?

Prothena's top institutional shareholders include:
  1. BlackRock Inc. — 8.53%
  2. Dimensional Fund Advisors LP — 3.39%
  3. Rock Springs Capital Management LP — 1.52%
  4. Geode Capital Management LLC — 1.33%
  5. Two Sigma Advisers LP — 1.02%
  6. Invesco Ltd. — 0.75%

Which major investors are selling Prothena stock?

During the previous quarter, PRTA stock was sold by these institutional investors:
  1. Rock Springs Capital Management LP
  2. Prosight Management LP
  3. Pinnacle Associates Ltd.
  4. Royal Bank of Canada
  5. Platinum Investment Management Ltd.
  6. EAM Investors LLC
  7. EAM Global Investors LLC
  8. Citadel Advisors LLC
Within the previous year, company insiders that have sold Prothena company stock include:
  1. Christopher S Henney (Director)
  2. Wagner M Zago (Insider)
  3. Christopher S Henney (Director)
  4. Dennis J Selkoe (Director)
  5. Carol D Karp (Insider)
  6. Dennis J Selkoe (Director)
  7. Ecor1 Capital, Llc (Major Shareholder)
  8. Karin L Walker (CAO)

Which major investors are buying Prothena stock?

In the last quarter, PRTA stock was acquired by institutional investors including:
  1. Boxer Capital LLC
  2. SG Americas Securities LLC
  3. BlackRock Inc.
  4. UBS Group AG
  5. Marshall Wace LLP
  6. Geode Capital Management LLC
  7. Voloridge Investment Management LLC
  8. Invesco Ltd.
The Only Futures Trading Guide You’ll Ever Need
Regardless of your level of futures trading prowess, our Technical Analysis Guide has something to help you succeed in today’s futures markets.
Download your FREE Technical Analysis Trading Guide Today!