Mark Campbell Winmill - Net Worth and Insider Trading
Mark Campbell Winmill Net Worth
The estimated net worth of Mark Campbell Winmill is at least $2 Million dollars as of 2025-05-22. Mark Campbell Winmill is the President and CEO of Global Self Storage Inc and owns about 322,838 shares of Global Self Storage Inc (SELF) stock worth over $2 Million. Details can be seen in Mark Campbell Winmill'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 Mark Campbell Winmill has not made any transactions after 2025-05-19 and currently still holds the listed stock(s). Please note that this estimate may not reflect the actual net worth.
Transaction Summary of Mark Campbell Winmill
Mark Campbell Winmill Insider Ownership Reports
Based on ownership reports from SEC filings, as the reporting owner, Mark Campbell Winmill owns 4 companies in total, including Global Self Storage Inc (SELF) , Foxby Corp (FXBY) , and Bexil Corp (BXLC) among others .
Click here to see the complete history of Mark Campbell Winmill’s form 4 insider trades.
Insider Ownership Summary of Mark Campbell Winmill
| Ticker | Company | Transaction Date | Type of Owner |
|---|---|---|---|
| SELF | Global Self Storage Inc | 2024-05-30 | director & President and CEO |
| FXBY | Foxby Corp | 2011-08-09 | other: See "Explanation of Responses" |
| BXLC | Bexil Corp | 2007-09-19 | 10 percent owner |
 | | 2003-11-17 | director |
Mark Campbell Winmill Latest Holdings Summary
Mark Campbell Winmill currently owns a total of 1 stock. Mark Campbell Winmill owns 322,838 shares of Global Self Storage Inc (SELF) as of May 19, 2025, with a value of $2 Million.
Latest Holdings of Mark Campbell Winmill
| Ticker | Company | Latest Transaction Date | Shares Owned | Current Price ($) | Current Value ($) |
|---|---|---|---|---|---|
| SELF | Global Self Storage Inc | 2025-05-19 | 322,838 | 5.59 | 1,804,664 |
Holding Weightings of Mark Campbell Winmill
Mark Campbell Winmill Form 4 Trading Tracker
According to the SEC Form 4 filings, Mark Campbell Winmill has made a total of 12 transactions in Global Self Storage Inc (SELF) over the past 5 years, including 12 buys and 0 sells. The most-recent trade in Global Self Storage Inc is the acquisition of 10,000 shares on May 19, 2025, which cost Mark Campbell Winmill around $56,700.
Insider Trading History of Mark Campbell Winmill
- 1
Mark Campbell Winmill Trading Performance
GuruFocus tracks the stock performance after each of Mark Campbell Winmill's buying transactions within different timeframes. To be detailed, the average return of stocks after 3 months bought by Mark Campbell Winmill is 3.04%. GuruFocus also compares Mark Campbell Winmill's trading performance to market benchmark return within the same time period. The performance of stocks bought by Mark Campbell Winmill within 3 months outperforms 7 times out of 20 transactions in total compared to the return of S&P 500 within the same period.
You can select different timeframes to see how Mark Campbell Winmill's insider trading performs compared to the benchmark.
Performance of Mark Campbell Winmill
Average Return
Outperforming Transactions
| 1 Month | 3 Months | 6 Months | 1 Year | 2 Years | 3 Years | |
|---|---|---|---|---|---|---|
| Return(%) | 1.96 | | | | | |
| Relative Return to S&P 500(%) | 1.64 | | | | | |
Mark Campbell Winmill Ownership Network
Ownership Network List of Mark Campbell Winmill
Ownership Network Relation of Mark Campbell Winmill
Mark Campbell Winmill Owned Company Details
What does Global Self Storage Inc do?
Who are the key executives at Global Self Storage Inc?
Mark Campbell Winmill is the director & President and CEO of Global Self Storage Inc. Other key executives at Global Self Storage Inc include other: See "Explanation of Responses" Tuxis Corp , other: See "Explanation of Responses" Winmill & Co. Inc , and General Counsel Donald Ii Klimoski .
Global Self Storage Inc (SELF) Insider Trades Summary
Over the past 18 months, Mark Campbell Winmill made 2 insider transaction in Global Self Storage Inc (SELF) with a net purchase of 32,899. Other recent insider transactions involving Global Self Storage Inc (SELF) include a net purchase of 35,096 shares made by Winmill & Co. Inc , a net purchase of 4,280 shares made by Tuxis Corp , and a net purchase of 371 shares made by Burke Russell E Iii .
In summary, during the past 3 months, insiders sold 0 shares of Global Self Storage Inc (SELF) in total and bought 29,280 shares, with a net purchase of 29,280 shares. During the past 18 months, 15,000 shares of Global Self Storage Inc (SELF) were sold and 88,185 shares were bought by its insiders, resulting in a net purchase of 73,185 shares.
Global Self Storage Inc (SELF)'s detailed insider trading history can be found in Insider Trading Tracker table.
Global Self Storage Inc Insider Transactions
Mark Campbell Winmill Mailing Address
Above is the net worth, insider trading, and ownership report for Mark Campbell Winmill. Based on the public information released on the U.S. Securities and Exchange Commission (SEC) website, Mark Campbell Winmill's mailing address is: Millbrook Ny 12545.
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