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).
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James Topper

James Topper
Sierra Oncology (SRRA)
Director

Ranked #75,062 out of 99,218 Corporate Insiders

Profitable Transactions

20%
1 out of 5 Profitable Transactions

Average Return

-16.70%
Average return per transaction
Time Frame
1 Year
Compare to
No Benchmark

Insider Holdings

$290M
41.83%
36.93%
13.92%
7.33%
A breakdown of James Topper's holdings

Insider Roles

NewAmsterdam Pharma Company
(NAMS)
Director
Phathom Pharmaceuticals
(PHAT)
Director, Ten Percent Owner
Amicus
(FOLD)
Director
AnaptysBio
(ANAB)
Director, Ten Percent Owner
Roles that James Topper holds in companies

Most Profitable Insider Trade

Stock:
Sierra Oncology
(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

Company Name
Last Transaction Date
Insider Position
Last Transaction
Last Transaction Amount
Holding Value
SRRA
Sierra Oncology
Feb 16, 2017
Informative Buy
8.00M
ALPN
Alpine Immune Sciences
May 20, 2024
Uninformative Sell
$0.00
AnaptysBio
Nov 18, 2020
Director, Ten Percent Owner
Uninformative Sell
$21.26M
ALNAQ
Allena Pharmaceuticals
APTX
Aptinyx
Jun 26, 2018
Uninformative Buy
$306.25K
ETTX
Entasis Therapeutics Holdings
Oct 02, 2018
Informative Buy
5.64M
$2.96M
Phathom Pharmaceuticals
May 24, 2024
Director, Ten Percent Owner
Uninformative Buy
$107.12M
NewAmsterdam Pharma Company
Mar 28, 2024
Director
Informative Buy
181.22K
$121.34M
PTLA
Portola Pharma
May 28, 2013
Uninformative Buy
$25.76M
Amicus
Director
$40.38M
LJPC
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

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 20%.
    What is the average return per transaction made by James Topper?
    The average return per transaction made by James Topper is -16.70%.
      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.
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