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Chirfi Guindo Insider Profile

4 Followers
Chirfi Guindo, Head of Glob Prod Strat & Com at Biogen, holds 61.67K shares in Merck & Company (Ticker: MRK), holds 7.36K shares in Biogen (Ticker: BIIB), holds ― shares in Beam Therapeutics (Ticker: BEAM).
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Chirfi Guindo

Chirfi Guindo
Biogen (BIIB)
Head of Glob Prod Strat & Com

Ranked #43,440 out of 107,104 Corporate Insiders

Profitable Transactions

100%
3 out of 3 Profitable Transactions

Average Return

+5.40%
Average return per transaction
Time Frame
1 Year
Compare to
No Benchmark
How are Insiders Ranked?

Insider Holdings

$8M
82.82%
17.18%
0.00%
A breakdown of Chirfi Guindo's holdings
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Insider Roles

Merck & Company
(MRK)
EVP, Access, Policy & Comms
Biogen
(BIIB)
Head of Glob Prod Strat & Com
Beam Therapeutics
(BEAM)
Director
Roles that Chirfi Guindo holds in companies
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Most Profitable Insider Trade

Stock:
Merck & Company
(MRK)
Rating:Informative Sell
Date:Feb 06, 2026 - Today
Return:+7.30%
The most profitable trade made by Chirfi Guindo
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Chirfi Guindo's Trading History

Company Name
Last Transaction Date
Insider Position
Last Transaction
Last Transaction Amount
Holding Value
BIIB
Biogen
Feb 23, 2022
Head of Glob Prod Strat & Com
Uninformative Buy
231.19K
$1.42M
MRK
Merck & Company
May 01, 2026
EVP, Access, Policy & Comms
Uninformative Buy
109.81K
$6.87M
BEAM
Beam Therapeutics
―
Director
―
―
List of latest transactions for each holding click on a transaction to see Chirfi Guindo's performance on stock
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Chirfi Guindo insider profile FAQ

What is the percentage of profitable transactions made by Chirfi Guindo?
The percentage of profitable transactions made by Chirfi Guindo is 100%.
    What is the average return per transaction made by Chirfi Guindo?
    The average return per transaction made by Chirfi Guindo is 5.40%.
      What stocks does Chirfi Guindo hold?
      Chirfi Guindo holds: BIIB, MRK, BEAM stocks.
        What was Chirfi Guindo’s latest transaction?
        Chirfi Guindo latest transaction was an Uninformative Buy of $109.81K.
          What was Chirfi Guindo's most profitable transaction?
          Chirfi Guindo’s most profitable transaction was an Informative Sell of MRK stock on February 6, 2026. The return on the trade was 7.30%.
            What is Chirfi Guindo's role in Biogen?
            Chirfi Guindo's role in Biogen is Head of Glob Prod Strat & Com.
              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.