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Errol Desouza Insider Profile

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Errol Desouza, Director at Alector, holds 98.65K shares in Alector (Ticker: ALEC), holds 81.35K shares in Royalty Pharma (Ticker: RPRX), holds 30.00K shares in Korsana Biosciences (Ticker: KRSA).
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Errol Desouza

Errol Desouza
Alector (ALEC)
Director

Ranked #76,548 out of 108,921 Corporate Insiders

Profitable Transactions

0%
0 out of 2 Profitable Transactions

Average Return

-25.10%
Average return per transaction
Time Frame
1 Year
Compare to
No Benchmark
How are Insiders Ranked?

Insider Holdings

$10M
49.71%
38.34%
7.66%
2.20%
2.09% Others
A breakdown of Errol Desouza's holdings
See the Top Stocks by Insiders

Insider Roles

Royalty Pharma
(RPRX)
Director
Idexx Laboratories
(IDXX)
Director
Korsana Biosciences
(KRSA)
Director
Alector
(ALEC)
Director
+2 other positions
Roles that Errol Desouza holds in companies
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Most Profitable Insider Trade

Stock:
Albireo Pharma
(ALBO)
Rating:Informative Buy
Date:Nov 11, 2011 - Nov 11, 2012
Return:-3.50%
The most profitable trade made by Errol Desouza
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Errol Desouza's Trading History

Company Name
Last Transaction Date
Insider Position
Last Transaction
Last Transaction Amount
Holding Value
ALEC
Alector
Jun 17, 2026
Director
Uninformative Buy
―
$211.11K
ALBO
Albireo Pharma
Oct 02, 2015
―
Uninformative Sell
19.13K
$7.04M
RPRX
Royalty Pharma
May 14, 2025
Director
Uninformative Buy
―
$4.78M
KRSA
Korsana Biosciences
Dec 04, 2023
Director
Uninformative Buy
―
$736.80K
GYRE
Gyre Therapeutics
Oct 05, 2021
Director
Uninformative Buy
―
$200.86K
IDXX
Idexx Laboratories
Apr 30, 2009
Director
Uninformative Buy
12.50K
$3.69M
PTN
Palatin Technologies
―
Director
―
$0.00
List of latest transactions for each holding click on a transaction to see Errol Desouza's performance on stock
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Errol Desouza insider profile FAQ

What is the percentage of profitable transactions made by Errol Desouza?
The percentage of profitable transactions made by Errol Desouza is 0%.
    What is the average return per transaction made by Errol Desouza?
    The average return per transaction made by Errol Desouza is -25.10%.
      What stocks does Errol Desouza hold?
      Errol Desouza holds: ALEC, ALBO, RPRX, KRSA, GYRE, IDXX, PTN stocks.
        What was Errol Desouza’s latest transaction?
        Errol Desouza latest transaction was an Uninformative Buy of ―.
          What was Errol Desouza's most profitable transaction?
          Errol Desouza’s most profitable transaction was an Informative Buy of ALBO stock on November 11, 2011. The return on the trade was -3.50%.
            What is Errol Desouza's role in Alector?
            Errol Desouza's role in Alector is Director.
              How can I follow the stock ratings of top corporate insiders?
              Head over to our Expert Center to see a list of the Top 100 corporate insiders and follow the corporate insiders of your choice. Visit their profiles for more details about their stock transactions and see how they perform on a stock-by-stock basis.