James N Topper - Net Worth and Insider Trading
James N Topper Net Worth
The estimated net worth of James N Topper is at least $383 Million dollars as of 2024-04-18. James N Topper is the Director, 10% Owner of Alpine Immune Sciences Inc and owns about 2,571,450 shares of Alpine Immune Sciences Inc (ALPN) stock worth over $166 Million. James N Topper is the Director of NewAmsterdam Pharma Co NV and owns about 6,809,429 shares of NewAmsterdam Pharma Co NV (NAMS) stock worth over $132 Million. James N Topper is also the Director, 10% Owner of AnaptysBio Inc and owns about 3,571,212 shares of AnaptysBio Inc (ANAB) stock worth over $71 Million. Besides these, James N Topper also holds Sierra Oncology Inc (SRRA) , Entasis Therapeutics Holdings Inc (ETTX) , Aptinyx Inc (APTX) , Allena Pharmaceuticals Inc (ALNAQ) . Details can be seen in James N Topper's Latest Holdings Summary section.
Disclaimer: The insider information is derived from SEC filings. The estimated net worth is based on the assumption that James N Topper has not made any transactions after 2024-03-26 and currently still holds the listed stock(s).
Transaction Summary of James N Topper
James N Topper Insider Ownership Reports
Based on ownership reports from SEC filings, as the reporting owner, James N Topper owns 19 companies in total, including Tarsus Pharmaceuticals Inc () , Phathom Pharmaceuticals Inc () , and Aptinyx Inc () among others .
Click here to see the complete history of James N Topper’s form 4 insider trades.
Insider Ownership Summary of James N Topper
Ticker | Comapny | Transaction Date | Type of Owner |
---|---|---|---|
Tarsus Pharmaceuticals Inc | 2020-10-15 | 10 percent owner | |
Phathom Pharmaceuticals Inc | 2019-10-24 | director & 10 percent owner | |
Aptinyx Inc | 2018-06-25 | director & 10 percent owner | |
Passage Bio Inc | 2020-02-27 | 10 percent owner | |
AnaptysBio Inc | 2018-05-11 | director | |
Arcutis Biotherapeutics Inc | 2020-01-30 | 10 percent owner | |
Entasis Therapeutics Holdings Inc | 2018-09-28 | director & 10 percent owner | |
Alpine Immune Sciences Inc | 2019-01-18 | director | |
Mirum Pharmaceuticals Inc | 2019-07-17 | 10 percent owner | |
Allena Pharmaceuticals Inc | 2017-11-06 | director & 10 percent owner | |
Sierra Oncology Inc | 2017-02-14 | director | |
Glaukos Corp | 2015-06-24 | 10 percent owner | |
Collegium Pharmaceutical Inc | 2015-05-06 | 10 percent owner | |
Amicus Therapeutics Inc | 2007-06-27 | director & 10 percent owner | |
Portola Pharmaceuticals Inc | 2013-06-05 | director | |
La Jolla Pharmaceutical Co | 2005-12-14 | director | |
Frazier Lifesciences Acquisition Corp | 2020-12-08 | director & Chief Executive Officer | |
HilleVax Inc | 2022-04-28 | 10 percent owner | |
Frazier Lifesciences Acquisition Corp | 2020-12-08 | director & Chief Executive Officer |
James N Topper Latest Holdings Summary
James N Topper currently owns a total of 7 stocks. Among these stocks, James N Topper owns 2,571,450 shares of Alpine Immune Sciences Inc (ALPN) as of January 18, 2019, with a value of $166 Million and a weighting of 43.23%. James N Topper owns 6,809,429 shares of NewAmsterdam Pharma Co NV (NAMS) as of March 26, 2024, with a value of $132 Million and a weighting of 34.54%. James N Topper also owns 3,571,212 shares of AnaptysBio Inc (ANAB) as of January 31, 2017, with a value of $71 Million and a weighting of 18.48%. The other 4 stocks Sierra Oncology Inc (SRRA) , Entasis Therapeutics Holdings Inc (ETTX) , Aptinyx Inc (APTX) , Allena Pharmaceuticals Inc (ALNAQ) have a combined weighting of 3.76% among all his current holdings.
Latest Holdings of James N Topper
Ticker | Comapny | Latest Transaction Date | Shares Owned | Current Price ($) | Current Value ($) |
---|---|---|---|---|---|
ALPN | Alpine Immune Sciences Inc | 2019-01-18 | 2,571,450 | 64.43 | 165,678,524 |
NAMS | NewAmsterdam Pharma Co NV | 2024-03-26 | 6,809,429 | 19.44 | 132,375,300 |
ANAB | AnaptysBio Inc | 2017-01-31 | 3,571,212 | 19.83 | 70,817,134 |
SRRA | Sierra Oncology Inc | 2017-02-14 | 202,803 | 54.99 | 11,152,137 |
ETTX | Entasis Therapeutics Holdings Inc | 2018-09-28 | 1,349,953 | 2.19 | 2,956,397 |
APTX | Aptinyx Inc | 2018-06-25 | 3,190,079 | 0.10 | 306,248 |
ALNAQ | Allena Pharmaceuticals Inc | 2017-11-06 | 3,330,373 | 0.00 | 0 |
Holding Weightings of James N Topper
James N Topper Form 4 Trading Tracker
According to the SEC Form 4 filings, James N Topper has made a total of 0 transactions in Alpine Immune Sciences Inc (ALPN) over the past 5 years. The most-recent trade in Alpine Immune Sciences Inc is the acquisition of 372,439 shares on January 18, 2019, which cost James N Topper around $2 Million.
According to the SEC Form 4 filings, James N Topper has made a total of 1 transactions in NewAmsterdam Pharma Co NV (NAMS) over the past 5 years, including 1 buys and 0 sells. The most-recent trade in NewAmsterdam Pharma Co NV is the acquisition of 8,429 shares on March 26, 2024, which cost James N Topper around $181,224.
According to the SEC Form 4 filings, James N Topper has made a total of 0 transactions in AnaptysBio Inc (ANAB) over the past 5 years. The most-recent trade in AnaptysBio Inc is the acquisition of 400,000 shares on January 31, 2017, which cost James N Topper around $6 Million.
More details on James N Topper's insider transactions can be found in the Insider Trading History of James N Topper table.Insider Trading History of James N Topper
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James N Topper Trading Performance
GuruFocus tracks the stock performance after each of James N Topper's buying transactions within different timeframes. To be detailed, the average return of stocks after 3 months bought by James N Topper is 6.04%. GuruFocus also compares James N Topper's trading performance to market benchmark return within the same time period. The performance of stocks bought by James N Topper within 3 months outperforms 3 times out of 6 transactions in total compared to the return of S&P 500 within the same period.
You can select different timeframes to see how James N Topper's insider trading performs compared to the benchmark.
Performance of James N Topper
Average Relative Return
72.96%
Outperforming Transactions
33%
1 Month | 3 Months | 6 Months | 1 Year | 2 Years | 3 Years | |
---|---|---|---|---|---|---|
Relative Return(%) | 7.59 | 6.04 | 4.74 | 72.96 | 3.62 | -25.2 |
Relative Return to S&P 500(%) | 6.4 | 3.96 | 2.74 | 59.73 | -6.2 | -39.58 |
James N Topper Ownership Network
Ownership Network List of James N Topper
Ownership Network Relation of James N Topper
James N Topper Owned Company Details
What does Tarsus Pharmaceuticals Inc do?
Who are the key executives at Tarsus Pharmaceuticals Inc?
James N Topper is the 10 percent owner of Tarsus Pharmaceuticals Inc. Other key executives at Tarsus Pharmaceuticals Inc include Chief Human Resources Officer Dianne C. Whitfield , General Counsel Bryan Wahl , and Chief Operating Officer Seshadri Neervannan .
Tarsus Pharmaceuticals Inc () Insider Trades Summary
Over the past 18 months, James N Topper made no insider transaction in Tarsus Pharmaceuticals Inc (). Other recent insider transactions involving Tarsus Pharmaceuticals Inc () include a net sale of 354,867 shares made by Bobak R. Azamian , a net sale of 36,966 shares made by Leonard M. Greenstein , and a net sale of 20,877 shares made by Aziz Mottiwala .
In summary, during the past 3 months, insiders sold 28,810 shares of Tarsus Pharmaceuticals Inc () in total and bought 0 shares, with a net sale of 28,810 shares. During the past 18 months, 463,842 shares of Tarsus Pharmaceuticals Inc () were sold and 10,506 shares were bought by its insiders, resulting in a net sale of 453,336 shares.
Tarsus Pharmaceuticals Inc ()'s detailed insider trading history can be found in Insider Trading Tracker table.
Tarsus Pharmaceuticals Inc Insider Transactions
James N Topper Mailing Address
Above is the net worth, insider trading, and ownership report for James N Topper. You might contact James N Topper via mailing address: 550 Hamilton Avenue, Suite 100, Palo Alto Ca 94301.