Jeffrey Stein - Net Worth and Insider Trading
Jeffrey Stein Net Worth
The estimated net worth of Jeffrey Stein is at least $21 Million dollars as of 2026-09-01. Jeffrey Stein is the President & CEO of Cidara Therapeutics Inc and owns about 84,564 shares of Cidara Therapeutics Inc (CDTX) stock worth over $19 Million. Jeffrey Stein is the Director of IDEAYA Biosciences Inc and owns about 57,644 shares of IDEAYA Biosciences Inc (IDYA) stock worth over $2 Million. Jeffrey Stein is also the Director of Paratek Pharmaceuticals Inc and owns about 68,625 shares of Paratek Pharmaceuticals Inc (PRTK) stock worth over $153,034. Details can be seen in Jeffrey Stein'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 Jeffrey Stein has not made any transactions after 2026-03-02 and currently still holds the listed stock(s). Please note that this estimate may not reflect the actual net worth.
Transaction Summary of Jeffrey Stein
Jeffrey Stein Insider Ownership Reports
Based on ownership reports from SEC filings, as the reporting owner, Jeffrey Stein owns 3 companies in total, including IDEAYA Biosciences Inc (IDYA) , Cidara Therapeutics Inc (CDTX) , and Paratek Pharmaceuticals Inc (PRTK) .
Click here to see the complete history of Jeffrey Stein’s form 4 insider trades.
Insider Ownership Summary of Jeffrey Stein
| Ticker | Company | Transaction Date | Type of Owner |
|---|---|---|---|
| IDYA | IDEAYA Biosciences Inc | 2026-03-02 | director |
| CDTX | Cidara Therapeutics Inc | 2024-06-07 | director & President & CEO |
| PRTK | Paratek Pharmaceuticals Inc | 2023-09-21 | director |
Jeffrey Stein Latest Holdings Summary
Jeffrey Stein currently owns a total of 3 stocks. Among these stocks, Jeffrey Stein owns 84,564 shares of Cidara Therapeutics Inc (CDTX) as of June 7, 2024, with a value of $19 Million and a weighting of 88.37%. Jeffrey Stein owns 57,644 shares of IDEAYA Biosciences Inc (IDYA) as of March 2, 2026, with a value of $2 Million and a weighting of 10.91%. Jeffrey Stein also owns 68,625 shares of Paratek Pharmaceuticals Inc (PRTK) as of February 21, 2023, with a value of $153,034 and a weighting of 0.72%.
Latest Holdings of Jeffrey Stein
| Ticker | Company | Latest Transaction Date | Shares Owned | Current Price ($) | Current Value ($) |
|---|---|---|---|---|---|
| CDTX | Cidara Therapeutics Inc | 2024-06-07 | 84,564 | 221.38 | 18,720,778 |
| IDYA | IDEAYA Biosciences Inc | 2026-03-02 | 57,644 | 40.10 | 2,311,524 |
| PRTK | Paratek Pharmaceuticals Inc | 2023-02-21 | 68,625 | 2.23 | 153,034 |
Holding Weightings of Jeffrey Stein
Jeffrey Stein Form 4 Trading Tracker
According to the SEC Form 4 filings, Jeffrey Stein has made a total of 4 transactions in Cidara Therapeutics Inc (CDTX) over the past 5 years, including 4 buys and 0 sells. The most-recent trade in Cidara Therapeutics Inc is the acquisition of 8,000 shares on June 7, 2024, which cost Jeffrey Stein around $105,680.
According to the SEC Form 4 filings, Jeffrey Stein has made a total of 1 transactions in IDEAYA Biosciences Inc (IDYA) over the past 5 years, including 1 buys and 0 sells. The most-recent trade in IDEAYA Biosciences Inc is the acquisition of 50,000 shares on March 2, 2026, which cost Jeffrey Stein around $2 Million.
According to the SEC Form 4 filings, Jeffrey Stein has made a total of 1 transactions in Paratek Pharmaceuticals Inc (PRTK) over the past 5 years, including 0 buys and 1 sells. The most-recent trade in Paratek Pharmaceuticals Inc is the sale of 7,000 shares on February 21, 2023, which brought Jeffrey Stein around $13,300.
Insider Trading History of Jeffrey Stein
* The information on this page (including Insider Trading Shares, Share Changes, Cost, etc.) is sourced exclusively from Form 4 filings and does not incorporate any data from 13F or 13D/G filings. As a result, it may differ from the values shown on the Guru page.
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Jeffrey Stein Trading Performance
GuruFocus tracks the stock performance after each of Jeffrey Stein's buying transactions within different timeframes. To be detailed, the average return of stocks after 3 months bought by Jeffrey Stein is -1.92%. GuruFocus also compares Jeffrey Stein's trading performance to market benchmark return within the same time period. The performance of stocks bought by Jeffrey Stein within 3 months outperforms 5 times out of 16 transactions in total compared to the return of S&P 500 within the same period.
You can select different timeframes to see how Jeffrey Stein's insider trading performs compared to the benchmark.
Performance of Jeffrey Stein
Average Return
Outperforming Transactions
| 1 Month | 3 Months | 6 Months | 1 Year | 2 Years | 3 Years | |
|---|---|---|---|---|---|---|
| Return(%) | 4.4 | | | | | |
| Relative Return to S&P 500(%) | 3.29 | | | | | |
Jeffrey Stein Ownership Network
Ownership Network List of Jeffrey Stein
Ownership Network Relation of Jeffrey Stein
Jeffrey Stein Owned Company Details
What does IDEAYA Biosciences Inc do?
Who are the key executives at IDEAYA Biosciences Inc?
Jeffrey Stein is the director of IDEAYA Biosciences Inc. Other key executives at IDEAYA Biosciences Inc include See Remarks Briseno Andres Ruiz , Chief Development Officer Theodora Ross , and Chief Financial Officer Joshua Bleharski .
IDEAYA Biosciences Inc (IDYA) Insider Trades Summary
Over the past 18 months, Jeffrey Stein made 1 insider transaction in IDEAYA Biosciences Inc (IDYA) with a net purchase of 50,000. Other recent insider transactions involving IDEAYA Biosciences Inc (IDYA) include a net sale of 9,550 shares made by Briseno Andres Ruiz ,
In summary, during the past 3 months, insiders sold 9,550 shares of IDEAYA Biosciences Inc (IDYA) in total and bought 0 shares, with a net sale of 9,550 shares. During the past 18 months, 9,550 shares of IDEAYA Biosciences Inc (IDYA) were sold and 50,000 shares were bought by its insiders, resulting in a net purchase of 40,450 shares.
IDEAYA Biosciences Inc (IDYA)'s detailed insider trading history can be found in Insider Trading Tracker table.
IDEAYA Biosciences Inc Insider Transactions
Jeffrey Stein Mailing Address
Above is the net worth, insider trading, and ownership report for Jeffrey Stein. Based on the public information released on the U.S. Securities and Exchange Commission (SEC) website, Jeffrey Stein's mailing address is: San Diego Ca 92121.
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