Jack Nielsen - Net Worth and Insider Trading

Jack Nielsen Net Worth

The estimated net worth of Jack Nielsen is at least $91 Million dollars as of 2024-05-13. Jack Nielsen is the Director of Harmony Biosciences Holdings Inc and owns about 2,571,024 shares of Harmony Biosciences Holdings Inc (HRMY) stock worth over $79 Million. Jack Nielsen is the Director of Instil Bio Inc and owns about 624,339 shares of Instil Bio Inc (TIL) stock worth over $7 Million. Jack Nielsen is also the Director of IO Biotech Inc and owns about 3,015,545 shares of IO Biotech Inc (IOBT) stock worth over $4 Million. Besides these, Jack Nielsen also holds Reata Pharmaceuticals Inc (RETA) . Details can be seen in Jack Nielsen's Latest Holdings Summary section.

Disclaimer: The insider information is derived from SEC filings. The estimated net worth is based on the assumption that Jack Nielsen has not made any transactions after 2022-12-14 and currently still holds the listed stock(s).

Transaction Summary of Jack Nielsen

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Jack Nielsen Insider Ownership Reports

Based on ownership reports from SEC filings, as the reporting owner, Jack Nielsen owns 9 companies in total, including Aligos Therapeutics Inc (ALGS) , Harmony Biosciences Holdings Inc (HRMY) , and ALX Oncology Holdings Inc (ALXO) among others .

Click here to see the complete history of Jack Nielsen’s form 4 insider trades.

Insider Ownership Summary of Jack Nielsen

Ticker Comapny Transaction Date Type of Owner
ALGS Aligos Therapeutics Inc 2020-10-15 director
HRMY Harmony Biosciences Holdings Inc 2022-12-14 director
ALXO ALX Oncology Holdings Inc 2020-07-16 director
2016-08-22 director
2018-07-17 director
2016-12-29 director
2014-03-19 director
2021-03-23 director & 10 percent owner
2021-11-09 director

Jack Nielsen Latest Holdings Summary

Jack Nielsen currently owns a total of 4 stocks. Among these stocks, Jack Nielsen owns 2,571,024 shares of Harmony Biosciences Holdings Inc (HRMY) as of December 14, 2022, with a value of $79 Million and a weighting of 86.89%. Jack Nielsen owns 624,339 shares of Instil Bio Inc (TIL) as of March 23, 2021, with a value of $7 Million and a weighting of 8%. Jack Nielsen also owns 3,015,545 shares of IO Biotech Inc (IOBT) as of November 9, 2021, with a value of $4 Million and a weighting of 4.78%. The other 1 stocks Reata Pharmaceuticals Inc (RETA) have a combined weighting of 0.34% among all his current holdings.

Latest Holdings of Jack Nielsen

Ticker Comapny Latest Transaction Date Shares Owned Current Price ($) Current Value ($)
HRMY Harmony Biosciences Holdings Inc 2022-12-14 2,571,024 30.71 78,956,147
TIL Instil Bio Inc 2021-03-23 624,339 11.64 7,267,306
IOBT IO Biotech Inc 2021-11-09 3,015,545 1.44 4,342,083
RETA Reata Pharmaceuticals Inc 2016-08-22 1,780 172.36 306,801

Holding Weightings of Jack Nielsen


Jack Nielsen Form 4 Trading Tracker

According to the SEC Form 4 filings, Jack Nielsen has made a total of 24 transactions in Harmony Biosciences Holdings Inc (HRMY) over the past 5 years, including 2 buys and 22 sells. The most-recent trade in Harmony Biosciences Holdings Inc is the sale of 2,834 shares on December 14, 2022, which brought Jack Nielsen around $169,927.

According to the SEC Form 4 filings, Jack Nielsen has made a total of 1 transactions in Instil Bio Inc (TIL) over the past 5 years, including 1 buys and 0 sells. The most-recent trade in Instil Bio Inc is the acquisition of 15,000 shares on March 23, 2021, which cost Jack Nielsen around $6 Million.

According to the SEC Form 4 filings, Jack Nielsen has made a total of 1 transactions in IO Biotech Inc (IOBT) over the past 5 years, including 1 buys and 0 sells. The most-recent trade in IO Biotech Inc is the acquisition of 650,000 shares on November 9, 2021, which cost Jack Nielsen around $9 Million.

More details on Jack Nielsen's insider transactions can be found in the Insider Trading History of Jack Nielsen table.

Insider Trading History of Jack Nielsen

No transactions are available. GuruFocus only tracks and displays the purchase and sale of non-derivative security in open market or private transactions from SEC filings with the transaction code of P or S.
Total 0
  • 1
Only the transactions in Open Market or Private Sale at the market prices are included. Other transactions such as conversion of derivative security or exercise of options are not included. Insiders are limited to only officers and/or directors of the company.

Jack Nielsen Trading Performance

GuruFocus tracks the stock performance after each of Jack Nielsen's buying transactions within different timeframes. To be detailed, the average return of stocks after 3 months bought by Jack Nielsen is 14.99%. GuruFocus also compares Jack Nielsen's trading performance to market benchmark return within the same time period. The performance of stocks bought by Jack Nielsen within 3 months outperforms 3 times out of 5 transactions in total compared to the return of S&P 500 within the same period.

You can select different timeframes to see how Jack Nielsen's insider trading performs compared to the benchmark.

Please note GuruFocus will not track the insiders’ transaction performance if he/she does not have buying transactions.

Performance of Jack Nielsen

Average Return

Average return per transaction

Outperforming Transactions

2 out of 5 outperforming transactions.
Each transaction is measured over a period and compared to .
1 Month 3 Months 6 Months 1 Year 2 Years 3 Years
Return(%) -2.92
Relative Return to S&P 500(%) -2.06

Jack Nielsen Ownership Network

Ownership Network List of Jack Nielsen

No Data

Ownership Network Relation of Jack Nielsen


Jack Nielsen Owned Company Details

What does Aligos Therapeutics Inc do?

Who are the key executives at Aligos Therapeutics Inc?

Jack Nielsen is the director of Aligos Therapeutics Inc. Other key executives at Aligos Therapeutics Inc include 10 percent owner Roche Holding Ltd , 10 percent owner Roche Finance Ltd , and Chief Medical Officer Matthew W. Mcclure .

Aligos Therapeutics Inc (ALGS) Insider Trades Summary

Over the past 18 months, Jack Nielsen made no insider transaction in Aligos Therapeutics Inc (ALGS). Other recent insider transactions involving Aligos Therapeutics Inc (ALGS) include a net purchase of 7,933,601 shares made by Carole Nuechterlein ,

In summary, during the past 3 months, insiders sold 0 shares of Aligos Therapeutics Inc (ALGS) in total and bought 0 shares, with a net sale of 0 shares. During the past 18 months, 0 shares of Aligos Therapeutics Inc (ALGS) were sold and 7,933,601 shares were bought by its insiders, resulting in a net purchase of 7,933,601 shares.

Aligos Therapeutics Inc (ALGS)'s detailed insider trading history can be found in Insider Trading Tracker table.

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Aligos Therapeutics Inc Insider Transactions

No Available Data

Jack Nielsen Mailing Address

Above is the net worth, insider trading, and ownership report for Jack Nielsen. You might contact Jack Nielsen via mailing address: C/o Akebia Therapeutics, Inc., 245 First Street, Suite 1100, Cambridge Ma 02142.

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