Oxford Square Capital Corp.

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 14A

(RULE 14a-101)

INFORMATION REQUIRED IN PROXY STATEMENT

SCHEDULE 14A INFORMATION

PROXY STATEMENT PURSUANT TO SECTION 14(a) OF THE

SECURITIES EXCHANGE ACT OF 1934

Check the appropriate box:

Oxford Square Capital Corp.

(Name of Registrant as Specified in Its Charter)

(Name of Person(s) Filing Proxy Statement if other than the Registrant)

Payment of Filing Fee (Check the appropriate box):

July 8, 2026

Dear Stockholder:

You are cordially invited to attend the 2026 Annual Meeting (the “Annual Meeting”) of Stockholders of Oxford Square Capital Corp. (the “Company,” “OXSQ,” “we,” “us” or “our”) to be held on August 20, 2026 at 9:00 a.m., Eastern Time, in the second floor conference room of the Company’s corporate headquarters located at 8 Sound Shore Drive, Greenwich, Connecticut 06830. Stockholders of record of the Company at the close of business on June 30, 2026 are entitled to notice of, and to vote at, the Annual Meeting or any adjournment or postponement thereof. Details of the business to be conducted at the Annual Meeting are provided in the accompanying Notice of Annual Meeting and 2026 Proxy Statement.

It is very important that your shares be represented at the Annual Meeting. Whether or not you plan to attend, we hope you will vote as soon as possible. If you are unable to participate at the Annual Meeting, we urge you to follow the instructions on the Notice of Internet Availability of Proxy Materials to vote your proxy on the Internet. We encourage you to vote via the Internet, as it saves us significant time and processing costs. However, on the Notice of Internet Availability of Proxy Materials, you will also find instructions on how to request a hard copy of the proxy statement and proxy card free of charge and you may vote your proxy by returning your proxy card to us after you request the hard copy materials. Returning the proxy or voting by Internet or telephone does not deprive you of your right to attend the Annual Meeting and to vote your shares in person.

We reserve the right to reconsider the date, time, and/or means of convening the Annual Meeting, including holding the Annual Meeting by means of remote communications. If we take this step, we will announce the decision to do so in advance, and details on how to participate in the meeting will be issued by press release and filed with the Securities and Exchange Commission as additional proxy material. We urge you to retain your control or proxy voting number after you vote in case changes are made to the meeting format and such information is again required.

We look forward to seeing you at the Annual Meeting. Your vote and participation, no matter how many or how few shares you own, are very important to us.

Sincerely yours,

Jonathan H. Cohen

Chief Executive Officer

(203) 983-5275

NOTICE OF 2026 ANNUAL MEETING OF STOCKHOLDERS

To be held in the second floor conference room

of the Company’s corporate headquarters, located at

8 Sound Shore Drive,

August 20, 2026, at 9:00 a.m., Eastern Time

To the Stockholders of Oxford Square Capital Corp.:

The 2026 Annual Meeting (the “Annual Meeting”) of Stockholders of Oxford Square Capital Corp. (the “Company,” “OXSQ,” “we,” “us” or “our”) will be held in the second floor conference room of the Company’s corporate headquarters located at 8 Sound Shore Drive, Greenwich, Connecticut 06830, on August 20, 2026, at 9:00 a.m., Eastern Time, for the following purposes:

1. To vote on the election of two directors of the Company to each serve for a term of three years, or until his respective successor is duly elected and qualified;

2. To vote on a proposal to ratify the selection of Ernst & Young LLP to serve as the Company’s independent registered public accounting firm for the Company for the fiscal year ending December 31, 2026; and

3. To transact such other business as may properly come before the Annual Meeting and any adjournments or postponements.

OXSQ’S BOARD OF DIRECTORS, INCLUDING ALL THE INDEPENDENT DIRECTORS (AS DEFINED BELOW), UNANIMOUSLY RECOMMENDS THAT YOU VOTE:

• “FOR” THE COMPANY’S DIRECTOR NOMINEES DESCRIBED IN THE ACCOMPANYING PROXY STATEMENT, AND

• “FOR” THE PROPOSAL TO RATIFY THE APPOINTMENT OF ERNST & YOUNG LLP AS THE INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM FOR THE COMPANY FOR THE FISCAL YEAR ENDING DECEMBER 31, 2026.

Information about the nominees of the Board of Directors for election as directors of the Company is provided in the accompanying proxy statement.

The following information applicable to the Annual Meeting may be found in the proxy statement and accompanying proxy card:

• The date, time and location of the meeting;

• A list of the matters intended to be acted on and our recommendations regarding those matters;

• Any control/identification numbers that you need to access your proxy card; and

• Information about attending the meeting and voting in person.

You have the right to receive notice of and to vote at the Annual Meeting if you were a stockholder of record at the close of business on June 30, 2026. We are furnishing the proxy statement and proxy card to our stockholders on the Internet, available athttps://www. proxy-direct.com/oxf-35172, rather than mailing printed copies of those materials to each stockholder. If you received a Notice of Internet Availability of Proxy Materials by mail, you will not receive a printed copy of the proxy statement and proxy card unless you request them. Instead, the Notice of Internet Availability of Proxy Materials will instruct you as to how you may access and review the proxy statement, and vote your proxy, on the internet. You may request hard copy proxy materials at no charge to you by following the instructions provided in the Notice of Internet Availability of Proxy Materials.

Whether or not you expect to be present in person at the Annual Meeting, and whatever the number of shares you own, you are requested to vote in accordance with the voting instructions in the Notice of Internet Availability of Proxy Materials, or by requesting hard copy proxy materials from us and returning a proxy card so that you may be represented at the Annual Meeting. Please note, however, that if you wish to vote in person at the meeting and your shares are held of record by a broker, bank, trustee, or nominee, you must obtain a “legal” proxy issued in your name from that record holder. In the event there are not sufficient votes for a quorum or to approve or ratify any of the foregoing proposals at the time of the Annual Meeting, the Annual Meeting may be adjourned in order to permit further solicitation of proxies by the Company.

We reserve the right to reconsider the date, time, and/or means of convening the Annual Meeting, including holding the Annual Meeting by means of remote communications. If we take this step, we will announce the decision to do so in advance, and details on how to participate in the meeting will be issued by press release and filed with the Securities and Exchange Commission as additional proxy material. We urge you to retain your control or proxy voting number after you vote in case changes are made to the meeting format and such information is again required.

We are not aware of any other business, or any other nominees for election as directors, that may properly be brought before the Annual Meeting. Thank you for your continued support of Oxford Square Capital Corp.

By Order of the Board of Directors,

Steven P. Novak

Chairman

Greenwich, Connecticut

July 8, 2026

This is a very important meeting. To ensure proper representation at the Annual Meeting, please follow the instructions on the Notice of Internet Availability of Proxy Materials to vote your proxy via the Internet or request, complete, sign, date and return a proxy card. Even if you vote your shares prior to the Annual Meeting, if you are a record holder of shares, or a beneficial holder who obtains “legal” proxy from your broker, bank, trustee, or nominee, you still may attend the Annual Meeting and vote your shares in person.