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Michael John Isaacs Insider Profile

4 Followers
Michael John Isaacs, General Counsel & Company Sec. at Prothena, holds 35.74K shares in Prothena (Ticker: PRTA).
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Michael John Isaacs

Michael John Isaacs
Prothena (PRTA)
General Counsel & Company Sec.

Not Ranked
Michael John Isaacs has not reported sufficient informative transactions and therefore cannot be ranked.
Time Frame
1 Year
Compare to
No Benchmark
How are Insiders Ranked?

Insider Holdings

$351K
100.00%
A breakdown of Michael John Isaacs's holdings
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Insider Roles

Prothena
(PRTA)
General Counsel & Company Sec.
Roles that Michael John Isaacs holds in companies
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Most Profitable Insider Trade

Currently, no data available
The most profitable trade made by Michael John Isaacs
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Michael John Isaacs's Trading History

Company Name
Last Transaction Date
Insider Position
Last Transaction
Last Transaction Amount
Holding Value
PRTA
Prothena
Jul 30, 2026
General Counsel & Company Sec.
Uninformative Sell
71.03K
$351.02K
Michael John Isaacs has not reported any informative transactions for PRTA, therefore, performance cannot be measured.
Date
Transaction
Amount
No. of Shares
Price per Share
Profit
Link to Report
Jul 30, 2026
Uninformative Sell
$71.03K
8,386
$8.47
―
Jul 30, 2026
Uninformative Sell
$40.18K
4,694
$8.56
―
List of latest transactions for each holding click on a transaction to see Michael John Isaacs's performance on stock
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Michael John Isaacs insider profile FAQ

What is the percentage of profitable transactions made by Michael John Isaacs?
The percentage of profitable transactions made by Michael John Isaacs is ―.
    What is the average return per transaction made by Michael John Isaacs?
    The average return per transaction made by Michael John Isaacs is ―.
      What stocks does Michael John Isaacs hold?
      Michael John Isaacs holds: PRTA stocks.
        What was Michael John Isaacs’s latest transaction?
        Michael John Isaacs latest transaction was an Uninformative Sell of $71.03K.
          What was Michael John Isaacs's most profitable transaction?
          Michael John Isaacs’s most profitable transaction was an Uninformative Buy of stock on ―. The return on the trade was ―.
            What is Michael John Isaacs's role in Prothena?
            Michael John Isaacs's role in Prothena is General Counsel & Company Sec..
              How can I follow the stock ratings of top corporate insiders?
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