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James Topper Insider Profile
4 Followers
James Topper, Director at Sierra Oncology, holds 5.86M shares in Phathom Pharmaceuticals (Ticker: PHAT), holds 0.00 shares in Alpine Immune Sciences (Ticker: ALPN), holds 6.81M shares in NewAmsterdam Pharma Company (Ticker: NAMS).
Profitable Transactions
2 out of 5 Profitable Transactions
Average Return
-11.40%
Average return per transaction
Time Frame
Compare to
Insider Holdings
Insider Roles
Roles that James Topper holds in companies
Most Profitable Insider Trade
Stock:
Sierra Oncology
(SRRA)
(SRRA)
Rating:Informative Buy
Date:Feb 16, 2017 - Feb 16, 2018
Return:+108.60%
The most profitable trade made by James Topper
James Topper's Trading History
Sierra Oncology
Feb 16, 2017
―
Informative Buy
8.00M
―
Alpine Immune Sciences
May 20, 2024
―
Uninformative Sell
―
$0.00
AnaptysBio
Nov 18, 2020
Director, Ten Percent Owner
Uninformative Sell
―
$20.76M
Allena Pharmaceuticals
―
―
―
―
Aptinyx
Jun 26, 2018
―
Uninformative Buy
―
$306.25K
Entasis Therapeutics Holdings
Oct 02, 2018
―
Informative Buy
5.64M
$2.96M
Phathom Pharmaceuticals
May 24, 2024
Director, Ten Percent Owner
Uninformative Buy
―
$55.41M
NewAmsterdam Pharma Company
Mar 28, 2024
Director
Informative Buy
181.22K
$137.01M
Portola Pharma
May 28, 2013
―
Uninformative Buy
―
$25.76M
Amicus
―
Director
―
$33.45M
La Jolla Pharma
Feb 26, 2009
―
Informative Sell
341.42K
$0.00
List of latest transactions for each holding click on a transaction to see James Topper's performance on stock
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James Topper insider profile FAQ
What is the percentage of profitable transactions made by James Topper?
The percentage of profitable transactions made by James Topper is 40%.
What is the average return per transaction made by James Topper?
The average return per transaction made by James Topper is -11.40%.
What stocks does James Topper hold?
James Topper holds: SRRA, ALPN, ANAB, ALNAQ, APTX, ETTX, PHAT, NAMS, PTLA, FOLD, LJPC stocks.
What was James Topper’s latest transaction?
James Topper latest transaction was an Uninformative Buy of ―.
What was James Topper's most profitable transaction?
James Topper’s most profitable transaction was an Informative Buy of SRRA stock on February 16, 2017. The return on the trade was 108.60%.
What is James Topper's role in Sierra Oncology?
James Topper's role in Sierra Oncology is Director.
How can I follow the stock ratings of top corporate insiders?
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