Management Team

Mr. Mark C. Winmill serves as Chief Executive Officer, President and Chairman of Board of Directors of the Company and its subsidiaries. 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. Mr. Winmill has over 36 years of real estate investing experience and has led the acquisition, development and management of over 50 projects valued at over $300 million since 1982, including over $65 million of self-storage properties since 2012. Prior to Global Self Storage, Inc., Mr. Winmill was the founder and CEO of Bull & Bear Securities, Inc. a nationwide discount broker, from 1987 until its sale to the Royal Bank of Canada in 1999. Mr. Winmill is a trustee of two charitable foundations, numerous family trusts, and a director of two other companies.

Thomas O’Malley is the Chief Financial Officer, Treasurer, and Vice President of the Company. He oversees financial reporting for the Company and assists the CEO in acquiring, developing, managing, and operating the Company's self-storage facility businesses. Mr. O’Malley has over 30 years of financial and operating experience in the real estate, financial services, and investment management sectors. He previously served as assistant controller of the investment advisory, Reich & Tang, and prior to that was an audit manager at RSM. He is a certified public accountant.

Don Klimoski serves as the Senior Vice President – Operations, General Counsel, Secretary and Chief Compliance Officer of the Company. He oversees Company legal and compliance matters, and assists the CEO in acquiring, developing, managing, and operating the Company's self-storage facility businesses. Mr. Klimoski previously served as the associate general counsel of NASDAQ-listed Commvault Systems from 2014 to 2017. Prior to leaving private practice, he was an associate at Sullivan and Cromwell, where his practice focused on mergers and acquisitions, securities law, corporate governance, intellectual property and related matters from 2008 to 2014. He is a member of the New York and New Jersey State Bars, and U.S. Patent and Trademark Office.

Russell Kamerman serves as the Vice President, Assistant General Counsel, Assistant Secretary and Assistant Chief Compliance Officer of the Company. He assists the General Counsel with Company legal and compliance matters. Previously, Mr. Kamerman was an associate at Fried, Frank, Harris, Shriver & Jacobson LLP and Kleinberg, Kaplan, Wolff & Cohen, where his practice focused on asset management, securities law, compliance, and other corporate matters from 2008 to 2014. He is a member of the New York State Bar.

Robert Mathers is Vice President of Property Operations. He assists the CEO in developing, managing, and operating the Company's self-storage facility businesses. Mr. Mathers has over 30 years of real estate property operations management experience.

Jonathan Arasin serves as the Vice President of Customer Operations. He assists the CEO by overseeing customer operations at facilities, implementing the company’s revenue rate management program, and ensuring that company policies are met while delivering best in class customer service to the company’s tenants. Mr. Arasin has 15+ years of customer service and sales experience in the retail and self storage industries.

Angelito Sarabia is the Controller of the Company. He reports to the Company’s Chief Financial Officer and is responsible for managing and controlling the Company’s accounting and financial records including accounts payable. He has over 15 years of combined experience in financial and management services.

Marketing associate to the company since 2023. Gretchen is a marketing professional with over 15 years of experience in the world of marketing, complemented by strong roots in graphic design. Her expertise encompasses strategic planning, brand management, digital marketing, and driving growth for businesses. Her background in graphic design gives her a unique perspective on visual communication and creativity, which she incorporates into her marketing strategies.