Global Self Storage Inc

Solicitation of Proxies

All costs of soliciting proxies for the Meeting will be borne by the Company. In addition to the solicitation of proxies by use of the mail, directors and officers of the Company may solicit proxies by telephone, electronic communications, or personal contact, for which they will not receive any additional compensation. The Company may pay persons holding shares of its stock in their names or those of their nominees for their expenses in sending soliciting materials to their beneficial owners. Authorizations to execute proxies may be obtained by telephonic instructions in accordance with procedures designed to authenticate the stockholder’s identity. Stockholders requiring further information with respect to telephonic voting instructions may call toll-free at (800) 690-6903. Any stockholder giving a proxy may revoke it at any time before it is exercised by submitting to the Secretary of the Company a written notice of revocation or a subsequently executed proxy.

Voting and Quorum

Stockholders are entitled to one vote for each share held, and a fractional vote for each fractional share held. Shares represented by executed and unrevoked proxies will be voted in accordance with the instructions on the proxy card. If a stockholder has signed a proxy card but no instructions are indicated, the proxies will vote “FOR” each proposal and, in their discretion, upon such other matters as may properly come before the Meeting. A stockholder may revoke a proxy by delivering to the Company’s Secretary, Donald Klimoski II, Esq. Global Self Storage, Inc., 3814 Route 44, Millbrook, New York 12545, a properly executed proxy with a date later than the previously delivered proxy or by sending a written revocation to the Company. To be effective, such revocation must be received prior to the Meeting. In addition, any stockholder who attends the Meeting virtually may vote by ballot at the Meeting, thereby canceling any proxy previously given.

The presence virtually or by proxy of stockholders entitled to cast a majority of all the votes entitled to be cast at the Meeting shall constitute a quorum. If a quorum is not present at the Meeting, the chairman of the Meeting has the power to adjourn the Meeting from time to time to a date not more than 120 days after the original record date without notice other than announcement at the Meeting. At a reconvened Meeting, if a quorum is present, any business may be transacted that might have been transacted at the originally scheduled Meeting. A stockholder vote may be taken for one or more proposals prior to any adjournment if sufficient votes have been received for approval. If a proxy is properly executed and returned accompanied by instructions to withhold authority to vote, represents a broker “non-vote” (that is, a proxy from a broker or nominee indicating that such person has not received instructions from the beneficial owner or other person entitled to vote shares of stock of the Company on a particular matter with respect to which the broker or nominee does not have discretionary power) or is marked with an abstention (collectively, “abstentions”), shares represented thereby will be considered to be present at the Meeting for purposes of determining the existence of a quorum for the transaction of business. Under Maryland law, abstentions are not votes cast and will have no effect on the results of the votes on Proposals 1 through 4. Because directors will be elected by a plurality of the votes cast in the election of directors, and no additional nominations may properly be presented at the Meeting, “withhold” votes will have no effect on the result of the vote on Proposal 1.

No other business is expected to be acted upon at the Meeting other than as described in this Proxy Statement. If any other matters properly come before the Meeting, shares represented by proxies will be voted in the discretion of the person or persons holding the proxies.

The Board knows of no other matters or business to be presented for consideration at the Meeting. If, however, any other matters properly come before the Meeting or any adjournments or postponements thereof, it is the intention of the persons named in the enclosed proxy to vote such proxy in accordance with their discretion on any such matters. The persons named in the enclosed proxy may also, if they deem it advisable, vote such proxy to adjourn the Meeting from time to time.

Discretionary Authority; Stockholder Proposals

In accordance with the rules established by the SEC, any stockholder proposal submitted pursuant to Rule 14a-8 under the Exchange Act intended for inclusion in the Company’s proxy statement for the 2026 Annual Meeting of Stockholders (the “2026 Annual Meeting”) must be received by the Company no later than 120 days before the one-year anniversary of the date of this proxy statement (e.g., not later than December 26, 2025). Such proposals should be sent in writing to Global Self Storage, Inc., Attn: Donald Klimoski II, Esq., Senior Vice President - Operations, General Counsel, Secretary, and Chief Compliance Officer, 3814 Route 44, Millbrook, New York 12545. Such proposals must comply with Rule 14a-8 of the Exchange Act and the interpretations thereof, and may be omitted from the Company’s proxy materials for the 2026 Annual Meeting if such proposals are not in compliance with applicable requirements of the Exchange Act and the interpretations thereof.

The Company’s current bylaws also establish advance notice procedures for stockholder proposals and director nominations that are not submitted for inclusion in the Company’s proxy statement for the 2026 Annual Meeting. Pursuant to the Company’s current bylaws, a stockholder of record may nominate a candidate for election as a director at an annual meeting of stockholders or propose business for consideration at such meeting, provided that a proper advance written notice is timely submitted to the Company in accordance with the disclosure, procedural, and other requirements set forth in the Company’s current bylaws. To be timely submitted, a stockholder’s notice must be delivered to the Secretary of the Company, at its principal executive offices, no earlier than the 150 th day nor later than 5:00 p.m. (Eastern Time), on the 120 th day prior to the first anniversary of the date of the proxy statement for the preceding year’s annual meeting. Accordingly, pursuant to such bylaws, a record stockholder nomination or proposal intended to be considered at the 2026 Annual Meeting must be delivered and received by the Secretary of the Company no earlier than November 26, 2025, nor later than 5:00 p.m. (Eastern Time), on December 26, 2025. Stockholder notices of proposals and/or director nominations should be sent to Global Self Storage, Inc., Attn: Donald Klimoski II, Esq., Senior Vice President - Operations, General Counsel, Secretary, and Chief Compliance Officer, 3814 Route 44, Millbrook, New York 12545. In the event that the date of the 2026 Annual Meeting is held earlier than May 10, 2026 or later than August 8, 2026, in order for the stockholder’s notice to be timely for the 2026 Annual Meeting, it must be so delivered and received no earlier than the 150 th day nor later than 5:00 p.m. (Eastern Time), on the later of the 120 th day prior to the date of the 2026 Annual Meeting, as originally convened, or the 10th day following the day on which public announcement of the date of the 2026 Annual Meeting is first made by the Company.

In addition to the above requirements for stockholder proposals and director nominations, the stockholder proponent or a qualified representative must attend the 2026 Annual Meeting to present such proposal or nomination.

Stockholders and other interested parties who wish to communicate with members of the Board or a specified member of the Board should submit the communication in writing to Global Self Storage, Inc., Attn: Donald Klimoski II, Esq., Senior Vice President - Operations, General Counsel, Secretary, and Chief Compliance Officer, 3814 Route 44, Millbrook, New York 12545, identifying the correspondence as intended for the Board, a specified member of the Board, or a specified group of directors.

Householding of Proxy Materials

To reduce the expenses of printing and delivering duplicate copies of proxy statements, some banks, brokers, and other nominee record holders may deliver only one copy of these materials to stockholders who share an address unless otherwise requested. If you share an address with another stockholder and have received only one copy of this Proxy Statement, you may request a separate copy of these materials at no cost to you by writing to Global Self Storage, Inc., Attention: Secretary, 3814 Route 44, Millbrook, New York 12545. For future stockholder meetings, you may request separate copies of these materials or request that we send only one set of these materials to you if you are receiving multiple copies by calling or writing to us at the number or address given above.

Notice to Banks, Broker/Dealers, and Voting Directors and Their Nominees

Please advise the Company’s transfer agent, Equiniti Trust Company, LLC, at (800) 937-5449, whether other persons are the beneficial owners of the shares of stock for which proxies are being solicited and, if so, the number of copies of this Proxy Statement and other soliciting material you wish to receive in order to supply copies to the beneficial owners of shares.

It is important that proxies be returned promptly. Therefore, stockholders who do not expect to attend the Meeting virtually are urged to complete, sign, date, and return the enclosed proxy card in the enclosed stamped envelope.