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Jason O'Byrne Insider Profile
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Jason O'Byrne, CFO at Caribou Biosciences, holds 110.70K shares in Vir Biotechnology (Ticker: VIR), holds 59.22K shares in Caribou Biosciences (Ticker: CRBU). Most recently, Jason O'Byrne Sold ― shares of Vir Biotechnology on Nov 18, 2025 for an estimated value of $37.73K.
Jason O'Byrne has not reported sufficient informative transactions and therefore cannot be ranked.
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Insider Holdings
Insider Roles
Roles that Jason O'Byrne holds in companies
Most Profitable Insider Trade
The most profitable trade made by Jason O'Byrne
Jason O'Byrne's Trading History
Caribou Biosciences
Feb 22, 2024
CFO
Uninformative Buy
―
$99.50K
Vir Biotechnology
Nov 18, 2025
EVP & CFO
Informative Sell
37.73K
$637.64K
List of latest transactions for each holding click on a transaction to see Jason O'Byrne's performance on stock
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Jason O'Byrne insider profile FAQ
What is the percentage of profitable transactions made by Jason O'Byrne?
The percentage of profitable transactions made by Jason O'Byrne is ―.
What is the average return per transaction made by Jason O'Byrne?
The average return per transaction made by Jason O'Byrne is ―.
What stocks does Jason O'Byrne hold?
Jason O'Byrne holds: CRBU, VIR stocks.
What was Jason O'Byrne’s latest transaction?
Jason O'Byrne latest transaction was an Informative Sell of $37.73K.
What was Jason O'Byrne's most profitable transaction?
Jason O'Byrne’s most profitable transaction was an Informative Sell of VIR stock on November 18, 2025. The return on the trade was -21.60%.
What is Jason O'Byrne's role in Caribou Biosciences?
Jason O'Byrne's role in Caribou Biosciences is CFO.
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