James Brian Windsor - Net Worth and Insider Trading
James Brian Windsor Net Worth
The estimated net worth of James Brian Windsor is at least $10,225 dollars as of 2025-07-23. James Brian Windsor is the President and CEO of Rein Therapeutics Inc and owns about 7,347 shares of Rein Therapeutics Inc (RNTX) stock worth over $10,212. James Brian Windsor is also the Chief Science Officer of TFF Pharmaceuticals Inc and owns about 200 shares of TFF Pharmaceuticals Inc (TFFP) stock worth over $13. Details can be seen in James Brian Windsor'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 James Brian Windsor has not made any transactions after 2024-12-05 and currently still holds the listed stock(s). Please note that this estimate may not reflect the actual net worth.

Transaction Summary of James Brian Windsor
James Brian Windsor Insider Ownership Reports
Based on ownership reports from SEC filings, as the reporting owner, James Brian Windsor owns 2 companies in total, including TFF Pharmaceuticals Inc (TFFP) , and Rein Therapeutics Inc (RNTX) .
Click here to see the complete history of James Brian Windsor’s form 4 insider trades.
Insider Ownership Summary of James Brian Windsor
Ticker | Company | Transaction Date | Type of Owner |
---|---|---|---|
TFFP | TFF Pharmaceuticals Inc | 2020-12-07 | director & Chief Science Officer |
RNTX | Rein Therapeutics Inc | 2024-12-05 | See Remarks |
James Brian Windsor Latest Holdings Summary
James Brian Windsor currently owns a total of 2 stocks. Among these stocks, James Brian Windsor owns 7,347 shares of Rein Therapeutics Inc (RNTX) as of December 5, 2024, with a value of $10,212 and a weighting of 99.87%. James Brian Windsor also owns 200 shares of TFF Pharmaceuticals Inc (TFFP) as of December 7, 2020, with a value of $13 and a weighting of 0.13%.
Latest Holdings of James Brian Windsor
Ticker | Company | Latest Transaction Date | Shares Owned | Current Price ($) | Current Value ($) |
---|---|---|---|---|---|
RNTX | Rein Therapeutics Inc | 2024-12-05 | 7,347 | 1.39 | 10,212 |
TFFP | TFF Pharmaceuticals Inc | 2020-12-07 | 200 | 0.07 | 13 |
Holding Weightings of James Brian Windsor
James Brian Windsor Form 4 Trading Tracker
According to the SEC Form 4 filings, James Brian Windsor has made a total of 3 transactions in Rein Therapeutics Inc (RNTX) over the past 5 years, including 3 buys and 0 sells. The most-recent trade in Rein Therapeutics Inc is the acquisition of 400 shares on December 5, 2024, which cost James Brian Windsor around $896.
According to the SEC Form 4 filings, James Brian Windsor has made a total of 1 transactions in TFF Pharmaceuticals Inc (TFFP) over the past 5 years, including 0 buys and 1 sells. The most-recent trade in TFF Pharmaceuticals Inc is the sale of 1,000 shares on December 7, 2020, which brought James Brian Windsor around $395,000.
Insider Trading History of James Brian Windsor
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James Brian Windsor Trading Performance
GuruFocus tracks the stock performance after each of James Brian Windsor's buying transactions within different timeframes. To be detailed, the average return of stocks after 3 months bought by James Brian Windsor is 46.14%. GuruFocus also compares James Brian Windsor's trading performance to market benchmark return within the same time period. The performance of stocks bought by James Brian Windsor within 3 months outperforms 2 times out of 4 transactions in total compared to the return of S&P 500 within the same period.
You can select different timeframes to see how James Brian Windsor's insider trading performs compared to the benchmark.
Performance of James Brian Windsor
James Brian Windsor Ownership Network
Ownership Network List of James Brian Windsor
Ownership Network Relation of James Brian Windsor

James Brian Windsor Owned Company Details
What does TFF Pharmaceuticals Inc do?
Who are the key executives at TFF Pharmaceuticals Inc?
James Brian Windsor is the director & Chief Science Officer of TFF Pharmaceuticals Inc. Other key executives at TFF Pharmaceuticals Inc include 10 percent owner Carlson Capital L P , 10 percent owner Clint Duane Carlson , and 10 percent owner Double Black Diamond Offshore Ltd .
TFF Pharmaceuticals Inc (TFFP) Insider Trades Summary
In summary, during the past 3 months, insiders sold 0 shares of TFF Pharmaceuticals Inc (TFFP) in total and bought 0 shares, with a net sale of 0 shares. During the past 18 months, 0 shares of TFF Pharmaceuticals Inc (TFFP) were sold and 0 shares were bought by its insiders, resulting in a net sale of 0 shares.
TFF Pharmaceuticals Inc (TFFP)'s detailed insider trading history can be found in Insider Trading Tracker table.
TFF Pharmaceuticals Inc Insider Transactions
James Brian Windsor Mailing Address
Above is the net worth, insider trading, and ownership report for James Brian Windsor. Based on the public information released on the U.S. Securities and Exchange Commission (SEC) website, James Brian Windsor's mailing address is: Austin Tx 78746.