PSEC

psec-20261104

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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of Earliest Event Reported): November 4, 2026

Prospect Capital Corporation

(Exact name of registrant as specified in its charter)

Maryland814-0065943-2048643

(State or other jurisdiction(Commission File Number)(IRS Employer

of incorporation)Identification No.)

10 East 40th Street, 42nd Floor, New York, New York 10016

(Address of principal executive offices, including zip code)

(212) 448-0702

(Registrant’s telephone number, including area code)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

oWritten communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

oSoliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

oPre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

oPre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each classTrading symbolName of each exchange on which registered

Common Stock, $0.001 par valuePSECNASDAQ Global Select Market

5.35% Series A Fixed Rate Cumulative Perpetual Preferred Stock, par value $0.001PSEC PRANew York Stock Exchange

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company o

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. o

Item 2.02.   Results of Operations and Financial Condition.

On November 4, 2026, the registrant issued a press release announcing its financial results for its fiscal quarter ended September 30, 2026. The text of the press release is included as Exhibit 99.1 to this Form 8-K.

The information disclosed under this Item 2.02, including Exhibit 99.1 hereto, is being furnished and shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934 and shall not be deemed incorporated by reference into any filing made under the Securities Act of 1933, except as expressly set forth by specific reference in such filing.

3

Item 7.01. Regulation FD Disclosure.

On November 4, 2026, the registrant issued a press release, included herewith as Exhibit 99.1, and by this reference incorporated herein, announcing the declaration of monthly cash distributions to common shareholders in the following amounts and with the following record and payment dates:

Monthly Cash Common Shareholder DistributionRecord DatePayment DateAmount ($ per share)

November 202611/25/202612/21/2026$0.0350

December 202612/29/20261/20/2027$0.0350

January 20271/27/20272/17/2027$0.0350

On November 4, 2026, the registrant announced the declaration of monthly dividends for the registrant’s 7.50% Preferred Stock for holders of record on the following dates based on an annual rate equal to 7.50% of the Stated Value of $25.00 per share as set forth in the Articles Supplementary for the Preferred Stock, from the date of issuance or, if later from the most recent dividend payment date (the first business day of the month, with no additional dividend accruing in January as a result), as follows:

Monthly Cash 7.50% Preferred Shareholder DistributionRecord DatePayment DateMonthly Amount ($ per share), before pro ration for partial periods

December 202612/22/20261/4/2027$0.156250

January 20271/20/20272/1/2027$0.156250

February 20272/17/20273/1/2027$0.156250

On November 4, 2026, the registrant announced the declaration of monthly dividends for the registrant’s Floating Rate Preferred Stock for holders of record on the following dates based on an annualized rate equal to 6.50% of the stated value of $25.00 per share as set forth in the Articles Supplementary for the Preferred Stock, from the date of issuance or, if later from the most recent dividend payment date (the first business day of the month, with no additional dividend accruing in January as a result), authorized on November 3, 2026, as follows:

Monthly Cash Floating Rate Preferred Shareholder DistributionRecord DatePayment DateMonthly Amount ($ per share), before pro ration for partial periods

December 202612/22/20261/4/2027$0.135417

January 20271/20/20

psec-20261027

0001287032FALSE00012870322026-10-272026-10-270001287032us-gaap:CommonStockMember2026-10-272026-10-270001287032psec:A535SeriesAFixedRateCumulativePerpetualPreferredStockMember2026-10-272026-10-27

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of Earliest Event Reported): October 27, 2026

Prospect Capital Corporation

(Exact name of registrant as specified in its charter)

Maryland814-0065943-2048643

(State or other jurisdiction(Commission File Number)(IRS Employer

of incorporation)Identification No.)

10 East 40th Street, 42nd Floor, New York, New York 10016

(Address of principal executive offices, including zip code)

(212) 448-0702

(Registrant’s telephone number, including area code)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

oWritten communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

oSoliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

oPre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

oPre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each classTrading symbolName of each exchange on which registered

Common Stock, $0.001 par valuePSECNASDAQ Global Select Market

5.35% Series A Fixed Rate Cumulative Perpetual Preferred Stock, par value $0.001PSEC PRANew York Stock Exchange

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company o

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. o

Item 2.02.   Results of Operations and Financial Condition.

Set forth below are preliminary estimates of Prospect Capital Corporation (the “Company”, “we” or “our”) as of and for the quarter ended September 30, 2026, which are estimated as of October 27, 2026. The preliminary financial data included in this Current Report on Form 8-K has been prepared by, and is the responsibility of, the Company’s management. The Company’s independent registered public accounting firm has not audited, reviewed, examined, compiled, nor applied agreed-upon procedures with respect to the preliminary financial data. Accordingly, the Company’s independent registered public accounting firm does not express an opinion or any other form of assurance with respect thereto. The preliminary data is subject to completion of the Company’s financial closing and review procedures and is not a comprehensive statement of the Company’s financial results or valuations as of, or for the period ended, September 30, 2026. Actual results may differ materially from this preliminary data as a result of the completion of the Company’s financial closing and review procedures, final adjustments, valuation process and other developments that may arise between now and the time that the Company’s financial results for such period are finalized.

As of the date hereof:

•The preliminary estimate of our common equity net asset value as of September 30, 2026 is approximately $2.9 billion.

•The preliminary estimate of our total equity, including the perpetual preferred stock on our balance sheet as equity, as of September 30, 2026 is approximately $4.4 billion.

•The preliminary estimate of our total principal amount of debt as of September 30, 2026 is approximately $1.5 billion.

•The preliminary estimate of our total assets as of September 30, 2026 is approximately $6.0 billion.

•The preliminary estimate of our total principal amount of debt divided by our total assets is approximately 25% as of September 30, 2026.

•The preliminary estimate of our net investment income for the three months ended September 30, 2026 is approximately $76 million.

•The preliminarily estimate of our investments on non-accrual status is approximately 0.2% of the total investment portfolio at fair market value as of September 30, 2026 and approximately 1.8% of the total investment portfolio at cost as of September 30, 2026.

The information disclosed under this Item 2.02 is being “furnished” and shall not be deemed “filed” by the Company for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that Section, and shall not be deemed incorporated by reference into any filing under th