Why insider trading matters?

Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise.

- Peter Lynch
PROTHENA CORP PUBLIC LTD CO (PRTA)
Sector: Healthcare; Industry: Biotechnology

Prothena Corporation plc, a clinical-stage neuroscience company, focuses on discovery and development of novel therapies for life-threatening diseases in the United States. Its discovery-stage programs include Tau for treating Alzheimer's disease, progressive supranuclear palsy, frontotemporal dementia, chronic traumatic encephalopathy, and other tauopathies; Aß, or Amyloid Beta, a protein for the treatment of Alzheimer's disease; TDP-43 for amyotrophic lateral sclerosis and frontotemporal dementia; and other products for neurodegeneration.


Trade Date Insider Title Buy/Sell #Shares Price Value Option
2022-01-12 EcoR1 Capital, LLC 10%-Owner Buy 300,000 $37.50 $11,250,300 No
2022-01-03 Selkoe Dennis J. Director Sell 5,000 $47.45 $237,233 Yes
2021-11-23 Walker Karin L Chief Accounting Officer Sell 4,519 $57.88 $261,573 Yes
2021-11-19 Malecek Michael J nan Sell 10,000 $55.00 $550,000 Yes
2021-11-01 Karp Carol D. Chief Regulatory Officer Sell 10,000 $57.18 $571,818 Yes
2021-10-27 Malecek Michael J nan Sell 10,000 $58.52 $585,250 Yes
2021-10-20 Walker Karin L Chief Accounting Officer Sell 23,000 $60.25 $1,385,823 Yes
2021-10-01 Selkoe Dennis J. Director Sell 5,000 $67.84 $339,176 Yes
2021-10-01 Karp Carol D. Chief Regulatory Officer Sell 10,000 $68.23 $682,336 Yes
2021-09-09 Karp Carol D. Chief Regulatory Officer Sell 10,000 $71.98 $719,847 Yes
2021-07-12 HENNEY CHRISTOPHER S Director Sell 23,892 $55.51 $1,326,128 Yes
2021-06-25 HENNEY CHRISTOPHER S Director Sell 12,000 $47.73 $572,819 Yes
2021-06-22 Zago Wagner M. Chief Scientific Officer Sell 115,250 $46.15 $5,318,769 Yes
2021-03-24 EcoR1 Capital, LLC 10%-Owner Buy 875,000 $20.75 $18,156,250 No
2021-02-24 EcoR1 Capital, LLC 10%-Owner Buy 55,200 $21.24 $1,172,385 No
2021-02-18 EcoR1 Capital, LLC 10%-Owner Buy 44,100 $23.65 $1,043,075 No
2021-02-18 EcoR1 Capital, LLC 10%-Owner Buy 44,100 $3.68 $162,103 No
2021-02-18 Zago Wagner M. Chief Scientific Officer Sell 7,540 $25.50 $192,270 Yes
2021-02-17 EcoR1 Capital, LLC 10%-Owner Buy 633,340 $21.56 $13,657,270 Yes
2021-02-12 Zago Wagner M. Chief Scientific Officer Sell 26,310 $19.16 $504,057 Yes
2017-10-02 Selkoe Dennis J. Director Sell 3,500 $64.17 $224,583 Yes
2017-09-28 Nickerson Tara Chief Business Officer Sell 17,500 $69.16 $1,210,245 Yes
2017-09-28 Walker Karin L See Remarks Sell 1,500 $70.00 $105,000 Yes
2017-09-28 Kinney Gene G. President and CEO Sell 2,800 $70.00 $196,000 Yes
2017-09-28 Zago Wagner M. Chief Scientific Officer Sell 900 $70.00 $63,000 Yes
2017-09-28 HENNEY CHRISTOPHER S Director Sell 900 $70.00 $63,000 Yes
2017-09-25 Nickerson Tara Chief Business Officer Sell 17,500 $63.60 $1,112,931 Yes
2017-07-17 HENNEY CHRISTOPHER S Director Sell 5,000 $66.13 $330,670 Yes
2017-07-17 Walker Karin L See Remarks Sell 5,000 $64.89 $324,439 Yes
2017-07-07 Selkoe Dennis J. Director Sell 3,500 $58.11 $203,399 Yes

Insider Smart

Mohawk Group Holdings, Inc. (MWK) - Multiple insiders bought MWK in June around $5, stock moved sideways for a month then made a 60% jump in 10 days. Patience is the key.