Document

Exhibit 3.1

PROSPECT CAPITAL CORPORATION

ARTICLES SUPPLEMENTARY

5.35% SERIES A FIXED RATE CUMULATIVE PERPETUAL PREFERRED STOCK

Prospect Capital Corporation, a Maryland corporation (the “Corporation”), hereby certifies to the State Department of Assessments and Taxation of Maryland as follows:

1.Pursuant to the authority expressly vested in the Board of Directors of the Corporation (the “Board”) by Section 5.3 of its charter (the “Charter”) and Section 2-208 of the Maryland General Corporation Law, the Board has duly adopted resolutions reclassifying 16,000,000 authorized but unissued shares of common stock, par value $0.001 per share (the “Common Stock”), of the Corporation, as additional shares (the “Additional Series A Shares”) of 5.35% Series A Fixed Rate Cumulative Perpetual Preferred Stock, par value $0.001 per share (the “Series A Shares”), having the preferences, conversion and other rights, voting powers, restrictions, limitations as to dividends and other distributions, qualifications and terms of such series as set forth in the Charter.

2.The Additional Series A Shares have been classified and designated by the Board under the authority contained in the Charter. After giving effect to the classification of the Additional Series A Shares set forth herein, the total number of Series A Shares that the Corporation has authority to issue is 22,151,157.

3.These Articles Supplementary have been approved by the Board in the manner and by the vote required by law.

4.The undersigned officer of the Corporation acknowledges these Articles Supplementary to be the act of the Corporation and, as to all matters or facts required to be verified under oath, the undersigned officer acknowledges that, to the best of such officer’s knowledge, information and belief, these matters and facts are true in all material respects and that this statement is made under the penalties for perjury.

IN WITNESS WHEREOF, the Corporation has caused these Articles Supplementary to be executed in its name and on its behalf by its President and Chief Operating Officer and attested to by its Chief Financial Officer, Chief Compliance Officer and Secretary on this 8th day of May, 2026.

PROSPECT CAPITAL CORPORATION

By:    /s/ M. Grier Eliasek_______________
    Name:    M. Grier Eliasek
    Title:     President & Chief Operating

Officer

ATTEST:

By: /s/ Kristin Van Dask______________
Name: Kristin Van Dask
Title: Chief Financial Officer, Chief

Compliance Officer & Secretary