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Mark Winmill Biography and Net Worth

Mark C. Winmill serves as Chairman of the Board, President, Chief Executive Officer of the Company. He is also Chief Executive Officer, President, and a director of Tuxis (a holding company) and its subsidiaries. He is Vice President of the Funds and Chief Investment Strategist of Midas Management Corporation (a registered investment adviser). He is Executive Vice President and a director of Winco. He is a principal of the Broker-Dealers. He manages all aspects of the Company’s self storage facility businesses including, among other things, the formation of business objectives and strategies, identification of potential acquisition targets, development of project plans, retention of employees, establishment of compensation and compensation incentives, negotiation and closing of property acquisitions, obtaining zoning approvals, overseeing construction, and development of leasing and tenant acquisition strategies. He was selected to serve on our Board because of his experience and extensive knowledge of the self storage industry and matters relating to real estate development, finance, accounting, and board operations. He may be deemed to be an “interested person” of the Company due to his role as an officer and director of the Company. Messrs. Mark and Thomas Winmill are brothers.

What is Mark Campbell Winmill's net worth?

The estimated net worth of Mark Campbell Winmill is at least $1.02 million as of May 15th, 2023. Mr. Winmill owns 202,202 shares of Global Self Storage stock worth more than $1,019,098 as of May 30th. This net worth evaluation does not reflect any other investments that Mr. Winmill may own. Learn More about Mark Campbell Winmill's net worth.

How do I contact Mark Campbell Winmill?

The corporate mailing address for Mr. Winmill and other Global Self Storage executives is 11 HANOVER SQUARE 12TH FLOOR, NEW YORK NY, 10005. Global Self Storage can also be reached via phone at (212) 785-0900 and via email at [email protected]. Learn More on Mark Campbell Winmill's contact information.

Has Mark Campbell Winmill been buying or selling shares of Global Self Storage?

During the last quarter, Mark Campbell Winmill has bought $39,936.00 in shares of Global Self Storage stock. Most recently, on Monday, May 15th, Mark Campbell Winmill bought 7,800 shares of Global Self Storage stock. The stock was acquired at an average cost of $5.12 per share, with a total value of $39,936.00. Following the completion of the transaction, the chief executive officer now directly owns 202,202 shares of the company's stock, valued at $1,035,274.24. Learn More on Mark Campbell Winmill's trading history.

Who are Global Self Storage's active insiders?

Global Self Storage's insider roster includes Russell Burke, III (Director), and Mark Winmill (CEO). Learn More on Global Self Storage's active insiders.

Are insiders buying or selling shares of Global Self Storage?

During the last twelve months, Global Self Storage insiders bought shares 6 times. They purchased a total of 18,135 shares worth more than $97,549.05. The most recent insider tranaction occured on May, 15th when General Counsel Donald Klimoski II bought 460 shares worth more than $2,336.80. Insiders at Global Self Storage own 6.9% of the company. Learn More about insider trades at Global Self Storage.

Information on this page was last updated on 5/15/2023.

Mark Campbell Winmill Insider Trading History at Global Self Storage

Transaction DateBuy/SellNumber of SharesAverage Share PriceTotal TransactionShares Held After TransactionDetails
5/15/2023Buy7,800$5.12$39,936.00202,202View SEC Filing Icon  
11/18/2022Buy3,000$5.18$15,540.00179,637View SEC Filing Icon  
8/23/2022Buy4,800$6.07$29,136.00176,637View SEC Filing Icon  
5/20/2022Buy1,700$5.74$9,758.00171,837View SEC Filing Icon  
8/24/2021Buy1,000$5.12$5,120.00View SEC Filing Icon  
8/20/2021Buy4,000$5.10$20,400.00158,112View SEC Filing Icon  
11/19/2020Buy7,500$4.00$30,000.00124,975View SEC Filing Icon  
8/19/2020Buy7,000$3.91$27,370.00115,975View SEC Filing Icon  
5/28/2019Buy2,000$3.70$7,400.00View SEC Filing Icon  
5/18/2018Buy1,400$4.18$5,852.00View SEC Filing Icon  
8/23/2017Buy3,000$4.89$14,670.0032,460View SEC Filing Icon  
11/30/2016Buy1,000$5.00$5,000.0030,460View SEC Filing Icon  
8/23/2016Buy2,000$5.50$11,000.0029,460View SEC Filing Icon  
5/26/2016Buy190$4.83$917.7027,460View SEC Filing Icon  
5/25/2016Buy200$4.77$954.0027,270View SEC Filing Icon  
5/24/2016Buy6,829$4.70$32,096.3021,241View SEC Filing Icon  
See Full Table

Mark Campbell Winmill Buying and Selling Activity at Global Self Storage

This chart shows Mark Campbell Winmill's buying and selling at Global Self Storage by year and by quarter.

Skip ChartChart Data in Insider Trading History Table

Global Self Storage Company Overview

Global Self Storage logo
Global Self Storage, Inc. operates as a real estate investment trust. It engages in the ownership, operation, management, acquisition, and re-development of self-storage properties. It offers personal, outdoor parking, climate controlled, wine, and business storage facilities. The company was founded on September 1, 1983 and is headquartered in Millbrook, NY.
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Today's Range

Now: $5.01
Low: $5.00
High: $5.08

50 Day Range

MA: $5.12
Low: $5.02
High: $5.30

2 Week Range

Now: $5.01
Low: $4.75
High: $7.36


17,203 shs

Average Volume

24,936 shs

Market Capitalization

$55.81 million

P/E Ratio


Dividend Yield



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