John D Diekman - Net Worth and Insider Trading
John D Diekman Net Worth
The estimated net worth of John D Diekman is at least $80 Million dollars as of 2024-12-27. John D Diekman is the Director of IDEAYA Biosciences Inc and owns about 2,963,066 shares of IDEAYA Biosciences Inc (IDYA) stock worth over $77 Million. John D Diekman is the Director of Affymetrix Inc and owns about 138,296 shares of Affymetrix Inc (AFFX) stock worth over $2 Million. John D Diekman is also the Director of Zai Lab Ltd and owns about 67,615 shares of Zai Lab Ltd (ZLAB) stock worth over $2 Million. Details can be seen in John D Diekman's Latest Holdings Summary section.
Disclaimer: The insider information is derived from SEC filings. The estimated net worth is based on the final shares held after open market or private purchases and sales of common stock with a transaction code of "P" or "S" on Form 4, assuming that John D Diekman has not made any transactions after 2022-02-04 and currently still holds the listed stock(s). Please note that this estimate may not reflect the actual net worth.
Transaction Summary of John D Diekman
John D Diekman Insider Ownership Reports
Based on ownership reports from SEC filings, as the reporting owner, John D Diekman owns 15 companies in total, including Aprea Therapeutics Inc (APRE) , IDEAYA Biosciences Inc (IDYA) , and Arvinas Inc (ARVN) among others .
Click here to see the complete history of John D Diekman’s form 4 insider trades.
Insider Ownership Summary of John D Diekman
| Ticker | Comapny | Transaction Date | Type of Owner |
|---|---|---|---|
| APRE | Aprea Therapeutics Inc | 2019-10-02 | 10 percent owner |
| IDYA | IDEAYA Biosciences Inc | 2020-11-11 | 10 percent owner & Former 10% holder |
| ARVN | Arvinas Inc | 2018-09-26 | 10 percent owner |
 | | 2018-07-17 | 10 percent owner |
| | 2018-03-27 | 10 percent owner |
| | 2017-11-16 | 10 percent owner |
| | 2017-04-24 | other: Fomer 10% owner |
| | 2016-05-17 | 10 percent owner |
| | 2014-09-23 | 10 percent owner |
| | 2015-04-14 | 10 percent owner |
| | 2015-02-04 | 10 percent owner |
| | 2012-05-11 | director |
| | 2022-02-04 | director |
| | 2021-12-03 | 10 percent owner |
| | 2023-08-18 | 10 percent owner |
John D Diekman Latest Holdings Summary
John D Diekman currently owns a total of 3 stocks. Among these stocks, John D Diekman owns 2,963,066 shares of IDEAYA Biosciences Inc (IDYA) as of May 28, 2019, with a value of $77 Million and a weighting of 95.3%. John D Diekman owns 138,296 shares of Affymetrix Inc (AFFX) as of June 30, 2011, with a value of $2 Million and a weighting of 2.41%. John D Diekman also owns 67,615 shares of Zai Lab Ltd (ZLAB) as of February 4, 2022, with a value of $2 Million and a weighting of 2.29%.
Latest Holdings of John D Diekman
| Ticker | Comapny | Latest Transaction Date | Shares Owned | Current Price ($) | Current Value ($) |
|---|---|---|---|---|---|
| IDYA | IDEAYA Biosciences Inc | 2019-05-28 | 2,963,066 | 25.86 | 76,624,887 |
| AFFX | Affymetrix Inc | 2011-06-30 | 138,296 | 14.01 | 1,937,527 |
| ZLAB | Zai Lab Ltd | 2022-02-04 | 67,615 | 27.22 | 1,840,480 |
Holding Weightings of John D Diekman
John D Diekman Form 4 Trading Tracker
According to the SEC Form 4 filings, John D Diekman has made a total of 0 transactions in IDEAYA Biosciences Inc (IDYA) over the past 5 years. The most-recent trade in IDEAYA Biosciences Inc is the acquisition of 250,000 shares on May 28, 2019, which cost John D Diekman around $3 Million.
According to the SEC Form 4 filings, John D Diekman has made a total of 0 transactions in Affymetrix Inc (AFFX) over the past 5 years. The most-recent trade in Affymetrix Inc is the sale of 10,000 shares on June 30, 2011, which brought John D Diekman around $80,000.
According to the SEC Form 4 filings, John D Diekman has made a total of 4 transactions in Zai Lab Ltd (ZLAB) over the past 5 years, including 0 buys and 4 sells. The most-recent trade in Zai Lab Ltd is the sale of 1,000 shares on February 4, 2022, which brought John D Diekman around $50,170.
Insider Trading History of John D Diekman
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John D Diekman Trading Performance
GuruFocus tracks the stock performance after each of John D Diekman's buying transactions within different timeframes. To be detailed, the average return of stocks after 3 months bought by John D Diekman is -46.8%. GuruFocus also compares John D Diekman's trading performance to market benchmark return within the same time period. The performance of stocks bought by John D Diekman within 3 months outperforms 0 times out of 1 transactions in total compared to the return of S&P 500 within the same period.
You can select different timeframes to see how John D Diekman's insider trading performs compared to the benchmark.
Performance of John D Diekman
Average Return
Outperforming Transactions
| 1 Month | 3 Months | 6 Months | 1 Year | 2 Years | 3 Years | |
|---|---|---|---|---|---|---|
| Return(%) | -12.55 | | | | | |
| Relative Return to S&P 500(%) | -17.52 | | | | | |
John D Diekman Ownership Network
John D Diekman Owned Company Details
What does Aprea Therapeutics Inc do?
Who are the key executives at Aprea Therapeutics Inc?
John D Diekman is the 10 percent owner of Aprea Therapeutics Inc. Other key executives at Aprea Therapeutics Inc include President & CEO Oren Gilad , SrVP/CFO/Prin. Fin &Acctg. Off John P. Hamill , and director & President & CEO Christian S Schade .
Aprea Therapeutics Inc (APRE) Insider Trades Summary
Over the past 18 months, John D Diekman made no insider transaction in Aprea Therapeutics Inc (APRE). Other recent insider transactions involving Aprea Therapeutics Inc (APRE) include a net purchase of 3,900 shares made by Oren Gilad , a net purchase of 23,728 shares made by Marc Duey , and a net purchase of 1,510 shares made by John P. Hamill .
In summary, during the past 3 months, insiders sold 6,462 shares of Aprea Therapeutics Inc (APRE) in total and bought 42,590 shares, with a net purchase of 36,128 shares. During the past 18 months, 6,462 shares of Aprea Therapeutics Inc (APRE) were sold and 59,320 shares were bought by its insiders, resulting in a net purchase of 52,858 shares.
Aprea Therapeutics Inc (APRE)'s detailed insider trading history can be found in Insider Trading Tracker table.
Aprea Therapeutics Inc Insider Transactions
John D Diekman Mailing Address
Above is the net worth, insider trading, and ownership report for John D Diekman. You might contact John D Diekman via mailing address: C/o 5 Am Ventures, 501 2nd Street, Suite 350, San Francisco Ca 94107.
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