Martin Brenner - Net Worth and Insider Trading
Martin Brenner Net Worth
The estimated net worth of Martin Brenner is at least $38,622 dollars as of 2026-09-01. Martin Brenner is the See Remarks of iBio Inc and owns about 30,652 shares of iBio Inc (IBIO) stock worth over $38,622. Details can be seen in Martin Brenner'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 Martin Brenner has not made any transactions after 2026-03-19 and currently still holds the listed stock(s). Please note that this estimate may not reflect the actual net worth.
Transaction Summary of Martin Brenner
Martin Brenner Insider Ownership Reports
Based on ownership reports from SEC filings, as the reporting owner, Martin Brenner owns 2 companies in total, including Pfenex Inc (PFNX) , and iBio Inc (IBIO) .
Click here to see the complete history of Martin Brenner’s form 4 insider trades.
Insider Ownership Summary of Martin Brenner
| Ticker | Company | Transaction Date | Type of Owner |
|---|---|---|---|
| PFNX | Pfenex Inc | 2020-10-01 | Chief Scientific Officer |
| IBIO | iBio Inc | 2026-03-19 | Chief Scientific Officer |
Martin Brenner Latest Holdings Summary
Martin Brenner currently owns a total of 1 stock. Martin Brenner owns 30,652 shares of iBio Inc (IBIO) as of March 19, 2026, with a value of $38,622.
Martin Brenner Form 4 Trading Tracker
According to the SEC Form 4 filings, Martin Brenner has made a total of 12 transactions in iBio Inc (IBIO) over the past 5 years, including 2 buys and 10 sells. The most-recent trade in iBio Inc is the acquisition of 12,336 shares on March 19, 2026, which cost Martin Brenner around $24,919.
Insider Trading History of Martin Brenner
* 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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Martin Brenner Trading Performance
GuruFocus tracks the stock performance after each of Martin Brenner's buying transactions within different timeframes. To be detailed, the average return of stocks after 3 months bought by Martin Brenner is -36.04%. GuruFocus also compares Martin Brenner's trading performance to market benchmark return within the same time period. The performance of stocks bought by Martin Brenner within 3 months outperforms 0 times out of 2 transactions in total compared to the return of S&P 500 within the same period.
You can select different timeframes to see how Martin Brenner's insider trading performs compared to the benchmark.
Performance of Martin Brenner
Average Return
Outperforming Transactions
| 1 Month | 3 Months | 6 Months | 1 Year | 2 Years | 3 Years | |
|---|---|---|---|---|---|---|
| Return(%) | 16.11 | | | | | |
| Relative Return to S&P 500(%) | 10.13 | | | | | |
Martin Brenner Ownership Network
Ownership Network List of Martin Brenner
Ownership Network Relation of Martin Brenner
Martin Brenner Owned Company Details
What does Pfenex Inc do?
Who are the key executives at Pfenex Inc?
Martin Brenner is the Chief Scientific Officer of Pfenex Inc. Other key executives at Pfenex Inc include Chief Business Officer Patrick K. Lucy , director & See Remarks Evert B. Schimmelpennink , and Chief Operating Officer Shawn Scranton .
Pfenex Inc (PFNX) Insider Trades Summary
In summary, during the past 3 months, insiders sold 0 shares of Pfenex Inc (PFNX) in total and bought 0 shares, with a net sale of 0 shares. During the past 18 months, 0 shares of Pfenex Inc (PFNX) were sold and 0 shares were bought by its insiders, resulting in a net sale of 0 shares.
Pfenex Inc (PFNX)'s detailed insider trading history can be found in Insider Trading Tracker table.
Pfenex Inc Insider Transactions
Martin Brenner Mailing Address
Above is the net worth, insider trading, and ownership report for Martin Brenner. Based on the public information released on the U.S. Securities and Exchange Commission (SEC) website, Martin Brenner's mailing address is: San Diego Ca 92121.
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