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James B. Tananbaum Insider Profile

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James B. Tananbaum, Director, Ten Percent Owner at Latigo Biotherapeutics, Inc., holds 3.41M shares in Latigo Biotherapeutics, Inc. (Ticker: LTGO), holds 15.69M shares in Alumis Inc. (Ticker: ALMS), holds 0.00 shares in Kinnate Biopharma (Ticker: KNTE).
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James B. Tananbaum

James B. Tananbaum
Latigo Biotherapeutics, Inc. (LTGO)
Director, Ten Percent Owner

Ranked #5,396 out of 108,921 Corporate Insiders

Profitable Transactions

50%
4 out of 8 Profitable Transactions

Average Return

+46.60%
Average return per transaction
Time Frame
1 Year
Compare to
No Benchmark
How are Insiders Ranked?

Insider Holdings

$643M
59.66%
27.10%
12.24%
1.00%
A breakdown of James B. Tananbaum's holdings
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Insider Roles

Disc Medicine
(IRON)
Director, Ten Percent Owner
Alumis Inc.
(ALMS)
Director, Ten Percent Owner
Latigo Biotherapeutics, Inc.
(LTGO)
Director, Ten Percent Owner
Quantum-Si
(QSI)
Director
Roles that James B. Tananbaum holds in companies
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Most Profitable Insider Trade

Stock:
Alumis Inc.
(ALMS)
Rating:Informative Buy
Date:May 06, 2025 - May 06, 2026
Return:+486.20%
The most profitable trade made by James B. Tananbaum
See the Latest Stocks Traded by Insiders

James B. Tananbaum's Trading History

Company Name
Last Transaction Date
Insider Position
Last Transaction
Last Transaction Amount
Holding Value
LTGO
Latigo Biotherapeutics, Inc.
Aug 10, 2026
Director, Ten Percent Owner
Uninformative Buy
―
$78.67M
KNTE
Kinnate Biopharma
Apr 05, 2024
―
Uninformative Sell
―
$0.00
IRON
Disc Medicine
Feb 09, 2021
Director, Ten Percent Owner
Uninformative Buy
15.00M
$383.49M
QSI
Quantum-Si
Jun 14, 2021
Director
Uninformative Buy
25.00M
$6.45M
PRDS
Pardes Biosciences
Aug 31, 2023
―
Uninformative Sell
―
$2.16K
ALMS
Alumis Inc.
Apr 03, 2026
Director, Ten Percent Owner
Uninformative Buy
―
$174.20M
List of latest transactions for each holding click on a transaction to see James B. Tananbaum's performance on stock
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James B. Tananbaum insider profile FAQ

What is the percentage of profitable transactions made by James B. Tananbaum?
The percentage of profitable transactions made by James B. Tananbaum is 50%.
    What is the average return per transaction made by James B. Tananbaum?
    The average return per transaction made by James B. Tananbaum is 46.60%.
      What stocks does James B. Tananbaum hold?
      James B. Tananbaum holds: LTGO, KNTE, IRON, QSI, PRDS, ALMS stocks.
        What was James B. Tananbaum’s latest transaction?
        James B. Tananbaum latest transaction was an Uninformative Buy of ―.
          What was James B. Tananbaum's most profitable transaction?
          James B. Tananbaum’s most profitable transaction was an Informative Buy of ALMS stock on May 6, 2025. The return on the trade was 486.20%.
            What is James B. Tananbaum's role in Latigo Biotherapeutics, Inc.?
            James B. Tananbaum's role in Latigo Biotherapeutics, Inc. is Director, Ten Percent Owner.
              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.