
Stockholder transaction expenses:
Sales Load (as a percentage of offering price) (1)			—
Offering expenses borne by the Company (as a percentage of offering price) (2)			—
Preferred Stock Dividend reinvestment plan expenses (3)			$15.00
Total stockholder transaction expenses (as a percentage of offering price):			—
Annual expenses (as a percentage of net assets attributable to common stock):
Management fees (4)			6.25%
Incentive fees payable under Investment Advisory Agreement (20% of realized capital gains and 20% of pre-incentive fee net investment income) (5)			1.11%
Total advisory fees			7.36%
Total interest expenses (6)			6.80%
Other expenses (7)			0.77%
Total annual expenses (5)(7)(8)			14.93%
Dividends on Preferred Stock (9)			6.36%
Total annual expenses after dividends on Preferred Stock			21.29%

Our base management fee is 2% of our gross assets (which include any amount borrowed, i.e., total assets without deduction for any liabilities, including any borrowed amounts for non-investment purposes, for which purpose we have not and have no intention of borrowing). Although no plans are in place to borrow the full amount under our line of credit, assuming that we borrowed $2.1 billion, the 2% management fee of gross assets equals approximately 6.25% of net assets.“Other expenses” are based on estimated amounts for the current fiscal year. The expenses of the Preferred Dividend Reinvestment Plan are included in “other expenses”. See “Capitalization” in the applicable prospectus supplement. The amount shown above represents annualized expenses during our nine months ended September 30, 2026 representing all of our estimated recurring operating expenses (except fees and expenses reported in other items of this table) that are deducted from our operating income and reflected as expenses in our Consolidated Statement of Operations. The estimate of our overhead expenses, including payments under an administration agreement with Prospect Administration, or the Administration Agreement is based on our projected allocable portion of overhead and other expenses incurred by Prospect Administration in performing its obligations under the Administration Agreement. See “Business-Management Services-Administration Agreement” in the applicable prospectus.

Other Transaction Expenses [Abstract]

Annual Expenses [Table Text Block]


Stockholder transaction expenses:
Sales Load (as a percentage of offering price) (1)			—
Offering expenses borne by the Company (as a percentage of offering price) (2)			—
Preferred Stock Dividend reinvestment plan expenses (3)			$15.00
Total stockholder transaction expenses (as a percentage of offering price):			—
Annual expenses (as a percentage of net assets attributable to common stock):
Management fees (4)			6.25%
Incentive fees payable under Investment Advisory Agreement (20% of realized capital gains and 20% of pre-incentive fee net investment income) (5)			1.11%
Total advisory fees			7.36%
Total interest expenses (6)			6.80%
Other expenses (7)			0.77%
Total annual expenses (5)(7)(8)			14.93%
Dividends on Preferred Stock (9)			6.36%
Total annual expenses after dividends on Preferred Stock			21.29%

Management Fees [Percent]

6.25%

Interest Expenses on Borrowings [Percent]

6.80%

Dividend Expenses on Preferred Shares [Percent]

6.36%

Incentive Fees [Percent]

1.11%

Other Annual Expenses [Abstract]

Other Annual Expenses [Percent]

0.77%

Total Annual Expenses [Percent]

21.29%

Expense Example [Table Text Block]

The following table demonstrates the projected dollar amount of cumulative expenses we would pay out of net assets and that common stockholders would indirectly bear over various periods with respect to a hypothetical investment in our common stock. In calculating the following expense amounts, we assume that we have issued all shares of preferred stock the Company is authorized to issue, and that we have borrowed $2.1 billion under our credit facility, which is the maximum amount available under the credit facility with the current levels of other debt, in addition to our other indebtedness of $1.3 billion, and that our annual operating expenses would remain at the levels set forth in the table above and that we would pay the costs shown in the table above.


	1 Year		3 Years		5 Years		10 Years


Common stockholders would pay the following expenses on a $1,000 investment, assuming a 5% annual return*	$	276	$	563	$	769	$	1,066

Common stockholders would pay the following expenses on a $1,000 investment, assuming a 5% annual return**	$	285	$	581	$	789	$	1,077

* Assumes that we will not realize any capital gains computed net of all realized capital losses and unrealized capital depreciation on our portfolio.

** Assumes no unrealized capital depreciation or realized capital losses and 5% annual return on our portfolio resulting entirely from net realized capital gains (and therefore subject to the capital gains incentive fee).

While the example assumes, as required by the SEC, a 5% annual return on our portfolio, our performance will vary and may result in a return greater or less than 5%. The income incentive fee under our Investment Advisory Agreement with Prospect Capital Management is unlikely to be material assuming a 5% annual return on our portfolio and is not included in the example. If we achieve sufficient returns on our portfolio, including through the realization of capital gains, to trigger an incentive fee of a material amount, our distributions to our common stockholders and our expenses would likely be higher. In addition, while the example assumes reinvestment of all dividends and other distributions at NAV, common stockholders that participate in our common stock dividend reinvestment plan will receive a number of shares of our common stock determined by dividing the total dollar amount of the distribution payable to a participant by 95% of the market price per share of our common stock at the close of trading on the valuation date for the distribution.

This example and the expenses in the table above should not be considered a representation of our future expenses. Actual expenses (including the cost of debt, if any, and other expenses) may be greater or less than those shown.

(1) In the event that securities are sold to or through underwriters, a corresponding prospectus supplement will disclose the estimated applicable sales load.

(2) The related prospectus supplement will disclose the estimated amount of offering expenses, the offering price and the estimated offering expenses borne by us as a percentage of the offering price.

(3) The expenses of the dividend reinvestment plan are included in “other expenses.” The plan administrator’s fees under the plan are paid by us. There are no brokerage charges or other charges to stockholders who participate in reinvestment of dividends or other distributions under the plan except that, if a participant elects by written notice to the plan administrator to have the plan administrator sell part or all of the shares held by the plan administrator in the participant’s account and remit the proceeds to the participant, the plan administrator is authorized to deduct a $15 transaction fee plus a $0.10 per share brokerage commissions from the proceeds. See “Capitalization” in the applicable prospectus supplement pursuant to which an offer is made and “Dividend Reinvestment and Direct Stock Repurchase Plan” in this prospectus and the applicable prospectus supplement.

(4) Our base management fee is 2% of our gross assets (which include any amount borrowed, i.e., total assets without deduction for any liabilities, including any borrowed amounts for non-investment purposes, for which purpose we have not and have no intention of borrowing). Although no plans are in place to borrow the full amount under our line of credit, assuming that we borrowed $2.1 billion, the 2% management fee of gross assets equals approximately 6.25% of net assets.

(5) Based on our net investment income and realized capital gains, less realized and unrealized capital losses, earned on our portfolio for the nine months ended September 30, 2026, all of which consisted of an income incentive fee. This historical amount has been adjusted to reflect the issuance of 128,045,302 shares of preferred stock. The capital gain incentive fee is paid without regard to pre-incentive fee income. For a more detailed discussion of the calculation of the two-part incentive fee, see “Management Services-Investment Advisory Agreement” in the prospectus.

(6) As of September 30, 2026, we had $1.3 billion outstanding of Unsecured Notes (as defined below) in various maturities, ranging from October 15, 2026 to March 15, 2052, and interest rates, ranging from 2.25% to 8.00%.

(7) “Other expenses” are based on estimated amounts for the current fiscal year. The expenses of the Preferred Dividend Reinvestment Plan are included in “other expenses”. See “Capitalization” in the applicable prospectus supplement. The amount shown above represents annualized expenses during our nine months ended September 30, 2026 representing all of our estimated recurring operating expenses (except fees and expenses reported in other items of this table) that are deducted from our operating income and reflected as expenses in our Consolidated Statement of Operations. The estimate of our overhead expenses, including payments under an administration agreement with Prospect Administration, or the Administration Agreement is based on our projected allocable portion of overhead and other expenses incurred by Prospect Administration in performing its obligations under the Administration Agreement. See “Business-Management Services-Administration Agreement” in the applicable prospectus.

(8) If all 47,505,179 outstanding 5.50% Preferred Stock and 6.50% Preferred Stock were converted into common stock and assuming all the Series A1 and Series A3 pay a Holder Optional Conversion Fee of 6.00% and all the Series A2 Preferred Stock pay a Holder Optional Conversion Fee of 0.00% of the maximum public offering price disclosed within the applicable prospectus supplement, then management fees would be 4.47%, incentive fees payable under our Investment Advisory Agreement would be 0.79%, total advisory fees would be 5.26%, total interest expenses would be 4.86%, other expenses would be 0.56%, and total annual expenses would be 10.68% of net assets attributable to our common stock.

(9) Based on the 5.50% per annum dividend rate applicable to the Series A1 Shares, M1 Shares, M2 Shares and A2 Shares. Also based on the 5.35% per annum dividend rate applicable to the A Shares. Also based on the 6.50% per annum dividend rate applicable to the Series A3 Shares and M3 Shares, the 6.50% annualized dividend rate applicable to Floating Rate Preferred Stock based on the floating rate as of October 30, 2026 and the 7.50% per annum dividend rate applicable to the Series A5 Shares and M5 Shares. Other series of preferred stock, including other series of preferred stock being sold in different offerings, may bear different annual dividend rates. No dividend will be paid on shares of Preferred Stock after they have been converted to shares of common stock.

Purpose of Fee Table , Note [Text Block]

The following tables are intended to assist you in understanding the costs and expenses that an investor in shares of common stock will bear directly or indirectly. The sales load and offering expenses shown in the table below will be paid for by the Company and will be indirectly borne by holders of our common stock and not by the holders of Preferred Stock prior to any conversion of such Preferred Stock to common stock. We caution you that some of the percentages indicated in the table below are estimates and may vary. These tables are based on our assets and common stock outstanding as of September 30, 2026, except that we assume that we have issued all shares of preferred stock the Company is authorized to issue, and that we have borrowed $2.1 billion under our credit facility, which is the maximum amount available under the credit facility with the current levels of other debt, in addition to our other indebtedness of $1.3 billion.

Except where the context suggests otherwise, any reference to fees or expenses paid by “us” or that “we” will pay fees or expenses, the Company will pay such fees and expenses out of our net assets and, consequently, common stockholders will indirectly bear such fees or expenses. However, common stockholders will not be required to deliver any money or otherwise bear personal liability or responsibility for such fees or expenses.

Financial Highlights [Abstract]

Senior Securities [Table Text Block]

Information about our senior securities is shown in the following table as of the end of each of the last ten fiscal years and as of September 30, 2026:


	Total Amount Outstanding(1)		Asset Coverage per Unit(2)		Involuntary Liquidating Preference per Unit	Average Market Value per Unit(3)
Credit Facility
Fiscal 2027 (as of September 30, 2026)	$	287,152	$	20,754	—	—
Fiscal 2026 (as of June 30, 2026)	562,328		11,340		—	—
Fiscal 2025 (as of June 30, 2025)	856,322		7,846		—	—
Fiscal 2024 (as of June 30, 2024)	794,796		9,746		—	—
Fiscal 2023 (as of June 30, 2023)	1,014,703		7,639		—	—
Fiscal 2022 (as of June 30, 2022)	839,464		9,015		—	—
Fiscal 2021 (as of June 30, 2021)	356,937		17,408		—	—
Fiscal 2020 (as of June 30, 2020)	237,536		22,000		—	—
Fiscal 2019 (as of June 30, 2019)	167,000		34,298		—	—
Fiscal 2018 (as of June 30, 2018)	37,000		155,503		—	—
Fiscal 2017 (as of June 30, 2017)	—		—		—	—




2017 Notes(4)
Fiscal 2017 (as of June 30, 2017)	$	50,734	$	2,251	—	—


2018 Notes(5)
Fiscal 2017 (as of June 30, 2017)	$	85,419	$	2,251	—	—


2019 Notes(6)
Fiscal 2018 (as of June 30, 2018)	$	101,647	$	2,452	—	—
Fiscal 2017 (as of June 30, 2017)	200,000		2,251		—	—


5.00% 2019 Notes(7)
Fiscal 2018 (as of June 30, 2018)	$	153,536	$	2,452	—	—
Fiscal 2017 (as of June 30, 2017)	300,000		2,251		—	—


2020 Notes(10)
Fiscal 2019 (as of June 30, 2019)	$	224,114	$	2,365	—	—
Fiscal 2018 (as of June 30, 2018)	392,000		2,452		—	—
Fiscal 2017 (as of June 30, 2017)	392,000		2,251		—	—

2022 Notes(14)
Fiscal 2022 (as of June 30, 2022)	$	60,501	$	2,733	—	—
Fiscal 2021 (as of June 30, 2021)	111,055		2,740		—	—
Fiscal 2020 (as of June 30, 2020)	258,240		2,408		—	—
Fiscal 2019 (as of June 30, 2019)	328,500		2,365		—	—
Fiscal 2018 (as of June 30, 2018)	328,500		2,452		—	—
Fiscal 2017 (as of June 30, 2017)	225,000		2,251		—	—


	Total Amount Outstanding(1)		Asset Coverage per Unit(2)		Involuntary Liquidating Preference per Unit	Average Market Value per Unit(3)
2023 Notes(8)(15)
Fiscal 2022 (as of June 30, 2022)	$	284,219	$	2,733	—	—
Fiscal 2021 (as of June 30, 2021)	284,219		2,740		—	—
Fiscal 2020 (as of June 30, 2020)	319,145		2,408		—	—
Fiscal 2019 (as of June 30, 2019)	318,863		2,365		—	—
Fiscal 2018 (as of June 30, 2018)	318,675		2,452		—	—
Fiscal 2017 (as of June 30, 2017)	248,507		2,251		—	—

2024 Notes(11)
Fiscal 2020 (as of June 30, 2020)	$	233,788	$	2,408	—	$	959
Fiscal 2019 (as of June 30, 2019)	234,443		2,365		—	1,002
Fiscal 2018 (as of June 30, 2018)	199,281		2,452		—	1,029
Fiscal 2017 (as of June 30, 2017)	199,281		2,251		—	1,027

6.375% 2024 Notes(8)(16)
Fiscal 2023 (as of June 30, 2023)	$	81,240	$	2,970	—	—
Fiscal 2022 (as of June 30, 2022)	81,240		2,733		—	—
Fiscal 2021 (as of June 30, 2021)	81,389		2,740		—	—
Fiscal 2020 (as of June 30, 2020)	99,780		2,408		—	—
Fiscal 2019 (as of June 30, 2019)	99,726		2,365		—	—

2025 Notes(17)
Fiscal 2024 (as of June 30, 2024)	$	156,168	$	3,155	—	—
Fiscal 2023 (as of June 30, 2023)	156,168		2,970		—	—
Fiscal 2022 (as of June 30, 2022)	156,168		2,733		—	—
Fiscal 2021 (as of June 30, 2021)	156,168		2,740		—	—
Fiscal 2020 (as of June 30, 2020)	201,250		2,408		—	—
Fiscal 2019 (as of June 30, 2019)	201,250		2,365		—	—

2026 Notes(18)
Fiscal 2024 (as of June 30, 2024)	$	400,000	$	3,155	—	—
Fiscal 2023 (as of June 30, 2023)	400,000		2,970		—	—
Fiscal 2022 (as of June 30, 2022)	400,000		2,733		—	—
Fiscal 2021 (as of June 30, 2021)	400,000		2,740		—	—

3.364% 2026 Notes
Fiscal 2027 (as of September 30, 2026)	$	263,220	$	3,877	—	—
Fiscal 2026 (as of June 30, 2026)	264,486		3,394		—	—
Fiscal 2025 (as of June 30, 2025)	300,000		3,194		—	—
Fiscal 2024 (as of June 30, 2024)	300,000		3,155		—	—
Fiscal 2023 (as of June 30, 2023)	300,000		2,970		—	—
Fiscal 2022 (as of June 30, 2022)	300,000		2,733		—	—
Fiscal 2021 (as of June 30, 2021)	300,000		2,740		—	—

3.437% 2028 Notes
Fiscal 2027 (as of September 30, 2026)	$	220,803	$	3,877	—	—
Fiscal 2026 (as of June 30, 2026)	254,749		3,394		—	—
Fiscal 2025 (as of June 30, 2025)	300,000		3,194		—	—
Fiscal 2024 (as of June 30, 2024)	300,000		3,155		—	—
Fiscal 2023 (as of June 30, 2023)	300,000		2,970		—	—
Fiscal 2022 (as of June 30, 2022)	300,000		2,733		—	—


	Total Amount Outstanding(1)		Asset Coverage per Unit(2)		Involuntary Liquidating Preference per Unit		Average Market Value per Unit(3)
2028 Notes(12)
Fiscal 2020 (as of June 30, 2020)	$	70,761	$	2,408	—		$	950
Fiscal 2019 (as of June 30, 2019)	70,761		2,365		—		984
Fiscal 2018 (as of June 30, 2018)	55,000		2,452		—		1,004

2029 Notes(13)
Fiscal 2021 (as of June 30, 2021)	$	69,170	$	2,740	—		$	1,028
Fiscal 2020 (as of June 30, 2020)	69,170		2,408		—		970
Fiscal 2019 (as of June 30, 2019)	69,170		2,365		—		983

5.50% 2030 Notes(19)
Fiscal 2027 (as of September 30, 2026)	$	167,755	$	3,877	—		$	93.60
Fiscal 2026 (as of June 30, 2026)	182,153		3,394		—		$	91.65

Prospect Capital InterNotes®
Fiscal 2027 (as of September 30, 2026)	$	598,228	$	3,877	—		—
Fiscal 2026 (as of June 30, 2026)	614,879		3,394		—		—
Fiscal 2025 (as of June 30, 2025)	647,232		3,194		—		—
Fiscal 2024 (as of June 30, 2024)	504,028		3,155		—		—
Fiscal 2023 (as of June 30, 2023)	358,105		2,970		—		—
Fiscal 2022 (as of June 30, 2022)	347,564		2,733		—		—
Fiscal 2021 (as of June 30, 2021)	508,711		2,740		—		—
Fiscal 2020 (as of June 30, 2020)	680,229		2,408		—		—
Fiscal 2019 (as of June 30, 2019)	707,699		2,365		—		—
Fiscal 2018 (as of June 30, 2018)	760,924		2,452		—		—
Fiscal 2017 (as of June 30, 2017)	980,494		2,251		—		—

Floating Rate Preferred Stock
Fiscal 2027 (as of September 30, 2026)	$	214,249	$	46	$	25	$	—
Fiscal 2026 (as of June 30, 2026)	219,601		44		25		—
Fiscal 2025 (as of June 30, 2025)	229,771		43		25		—
Fiscal 2024 (as of June 30, 2024)	129,198		46		25		—

7.50% Preferred Stock
Fiscal 2027 (as of September 30, 2026)	$	150,403	$	46	$	25	$	—
Fiscal 2026 (as of June 30, 2026)	129,630		44		25		—
Fiscal 2025 (as of June 30, 2025)	51,575		43		25		—

6.50% Preferred Stock
Fiscal 2027 (as of September 30, 2026)	$	600,081	$	46	$	25	$	—
Fiscal 2026 (as of June 30, 2026)	611,574		44		25		—
Fiscal 2025 (as of June 30, 2025)	659,069		43		25		—
Fiscal 2024 (as of June 30, 2024)	704,044		46		25		—
Fiscal 2023 (as of June 30, 2023)	533,216		47		25		—

5.50% Preferred Stock
Fiscal 2027 (as of September 30, 2026)	$	587,549	$	46	$	25	—
Fiscal 2026 (as of June 30, 2026)	617,980		44		25		—
Fiscal 2025 (as of June 30, 2025)	701,205		43		25		—
Fiscal 2024 (as of June 30, 2024)	772,133		46		25		—
Fiscal 2023 (as of June 30, 2023)	870,268		47		25		—
Fiscal 2022 (as of June 30, 2022)	590,197		54		25		—


	Total Amount Outstanding(1)		Asset Coverage per Unit(2)		Involuntary Liquidating Preference per Unit		Average Market Value per Unit(3)
Fiscal 2021 (as of June 30, 2021)	137,040		65		25		—

5.35% Preferred Stock
Fiscal 2027 (as of September 30, 2026)	$	133,982	$	46	$	25	$	15.13
Fiscal 2026 (as of June 30, 2026)	132,920		44		25		16.35
Fiscal 2025 (as of June 30, 2025)	131,279		43		25		17.12
Fiscal 2024 (as of June 30, 2024)	131,279		46		25		17.25
Fiscal 2023 (as of June 30, 2023)	149,066		47		25		15.98
Fiscal 2022 (as of June 30, 2022)	150,000		54		25		21.08

All Senior Securities(8)(9)
Fiscal 2027 (as of September 30, 2026)	$	3,223,422	$	1,849	—		—
Fiscal 2026 (as of June 30, 2026)	3,590,300		1,776		—		—
Fiscal 2025 (as of June 30, 2025)	3,876,453		1,733		—		—
Fiscal 2024 (as of June 30, 2024)	4,191,646		1,848		—		—
Fiscal 2023 (as of June 30, 2023)	4,162,766		1,862		—		—
Fiscal 2022 (as of June 30, 2022)	3,509,353		2,156		—		—
Fiscal 2021 (as of June 30, 2021)	2,404,689		2,584		—		—
Fiscal 2020 (as of June 30, 2020)	2,169,899		2,408		—		—
Fiscal 2019 (as of June 30, 2019)	2,421,526		2,365		—		—
Fiscal 2018 (as of June 30, 2018)	2,346,563		2,452		—		—
Fiscal 2017 (as of June 30, 2017)	2,681,435		2,251		—		—

(1) Except for the per unit data noted in footnote 2 and 3 below, the total amount of each class of senior securities outstanding at the end of the year/period presented (in 000’s).

(2)The asset coverage ratio for a class of secured senior securities representing indebtedness is calculated as our consolidated total assets, less all liabilities and indebtedness not represented by senior securities, divided by secured senior securities representing indebtedness. The asset coverage ratio for a class of unsecured senior securities representing indebtedness is inclusive of all senior securities representing indebtedness. With respect to the senior securities represented by indebtedness, this asset coverage ratio is multiplied by $1,000 to determine the Asset Coverage Per Unit. The asset coverage ratio for a class of senior securities representing preferred stock is calculated as our consolidated total assets, less all liabilities and indebtedness not represented by senior securities, divided by the sum of all senior securities representing indebtedness and the involuntary liquidation preference of senior securities representing preferred stock (the “Total Asset Coverage Ratio”). With respect to the Preferred Stock, the Asset Coverage Per Unit figure is expressed in terms of a dollar amount per share of outstanding Preferred Stock (based on a per share liquidation preference of $25). The rows reflecting “All Senior Securities” reflect the Total Asset Coverage Ratio as the asset coverage ratio, and express Asset Coverage Per Unit as per $1,000 of indebtedness or per $1,000 of Preferred Stock liquidation preference.

(3)This column is inapplicable, except for the 2024 Notes, the 2028 Notes, the 2029 Notes, and the 5.35% Preferred Stock. Our 5.50% 2030 Notes are registered for public trading in Israel on the TASE under the ticker symbol “PSEC.B1”, but are not registered for public trading in the U.S. The average market value per unit of the U.S. traded securities is calculated as an average of quarter-end prices. With respect to the senior securities represented by indebtedness, the market value is shown per $1,000 of indebtedness.

(4)We repaid the outstanding principal amount of the 2017 Notes on October 15, 2017.

(5)We repaid the outstanding principal amount of the 2018 Notes on March 15, 2018.

(6)We repaid the outstanding principal amount of the 2019 Notes on January 15, 2019.

(7)We redeemed the 5.00% 2019 Notes on September 26, 2018.

(8)For the fiscal years ended June 30, 2020 or prior, the 2023 Notes and 6.375% 2024 Notes are presented net of unamortized discount.

(9)While we do not consider undrawn commitments to fund under revolving or delayed draw arrangements or our guarantees of portfolio company obligations to be Senior Securities, if we were to elect to treat such unfunded commitments, which were $118,033 as of September 30, 2026 as Senior Securities for purposes of Section 18 of the 1940 Act, our asset coverage per unit would be $1,783. None of the portfolio company obligation guarantees are recorded as a liability on the Company’s Consolidated Statement of Assets and Liabilities, as such portfolio company liabilities are considered in the valuation of the investments in such portfolio companies.

(10)We repaid the outstanding principal amount of the 2020 Notes on April 15, 2020.

(11)We redeemed the 2024 Notes on February 16, 2021.

(12)We redeemed the 2028 Notes on June 15, 2021.

(13)We redeemed the 2029 Notes on December 30, 2021.

(14)We redeemed the 2022 Notes on July 15, 2022.

(15)We redeemed the 2023 Notes on March 15, 2023.

(16)We redeemed the 6.375% 2024 Notes on January 16, 2024.

(17)We repaid the outstanding principal amount of the 2025 Notes on March 3, 2025.

(18)We redeemed the 2026 Notes on June 18, 2025.

(19)The 5.50% 2030 Notes are denominated in Israeli Shekels and remeasured to the Company’s functional and reporting currency, U.S. Dollars, each reporting period date in accordance with ASC 830.

Senior Securities Amount

$ 3,223,422,000

$ 3,590,300,000

$ 3,876,453,000

$ 3,590,300,000

$ 3,876,453,000

$ 4,191,646,000

$ 4,162,766,000

$ 3,509,353,000

$ 2,404,689,000

$ 2,169,899,000

$ 2,421,526,000

$ 2,346,563,000

$ 2,681,435,000

Senior Securities Coverage per Unit

$ 1,849

$ 1,776

$ 1,733

$ 1,776

$ 1,733

$ 1,848

$ 1,862

$ 2,156

$ 2,584

$ 2,408

$ 2,365

$ 2,452

$ 2,251

Preferred Stock Liquidating Preference

$ 25

General Description of Registrant [Abstract]

Investment Objectives and Practices [Text Block]

Our investment objective is to generate both current income and long-term capital appreciation. We intend to invest primarily in privately owned United States (“U.S.”) middle market companies, in senior and secured first lien loans and, to a lesser extent, second lien loans, as well as equity and equity-linked investments with capital-appreciation potential (such as senior and secured convertible debt, preferred equity, common equity and warrants). Most of our investments will be in private U.S. companies; however, we may also invest to some extent in broadly-traded public companies and non-U.S. companies (subject to compliance with BDC requirements to invest at least 70% of assets in “eligible portfolio companies,” which are generally privately offered securities issued by U.S. private or thinly-traded companies). We are a non-diversified company within the meaning of the 1940 Act.

Our primary investment strategy is investing in private, middle-market companies in the U.S. in need of capital for refinancings, acquisitions, capital expenditures, growth initiatives, recapitalizations and other purposes. Typically, we focus on making investments in middle-market companies with annual revenues of less than $750 million and enterprise values of less than $1 billion. These private, middle-market companies are primarily owned by private equity funded and independent sponsors or us, as well as by a portfolio company’s management team, founder(s), or other investors. Our typical investment involves a senior and secured loan of less than $250 million.

Our investments in senior and secured loans are generally senior debt instruments that rank ahead of unsecured debt and equity of a given portfolio company. These loans also have the benefit of security interests on assets of the applicable portfolio company, which often rank ahead of any other security interests. We also make equity and equity-linked investments with capital-appreciation potential (such as senior and secured convertible debt, preferred equity, common equity and warrants).

We also invest a lesser amount of our assets in senior and secured debt and controlling equity positions in real estate investment trusts (“REIT” or “REITs”). The real estate investments of National Property REIT Corp. (“NPRC”) are in various classes of developed and occupied real estate properties that generate current yields, including multi-family properties and other tenant-diversified properties; historically, NPRC made investments in structured credit (primarily debt tranches). We historically invested in structured credit (primarily equity tranches).

We may also invest in other strategies and opportunities from time to time that the Investment Adviser views as attractive. The Investment Adviser may continue to evaluate other origination strategies in the ordinary course of business with no specific top-down allocation to any single origination strategy.

We directly originate the significant majority of our investments through our long-term relationships with private equity funded and independent sponsors, financial intermediaries, and management teams, as well as other sources. We seek to maximize returns, including both current yield and capital-appreciation potential, and minimize risk for our investors by applying rigorous credit and other analyses and cash-flow and asset-based lending techniques to originate, close, and monitor our investments.

We are consistently pursuing multiple investment opportunities. There can be no assurance that we will successfully consummate any investment opportunity we pursue. If any of these opportunities are consummated, there can be no assurance that investors will share our view of valuation or that any assets acquired will not be subject to future write downs, each of which could have an adverse effect on our stock price.

We hold many of our control investments in a two-tier structure consisting of a holding company and one or more related operating companies for tax purposes. These holding companies serve various business purposes including concentration of management teams, optimization of third-party borrowing costs, improvement of supplier, customer, and insurance terms, and enhancement of co-investments by the management teams. In these cases, our investment, which is generally equity in the holding company, the holding company’s equity investment in the operating company and any debt from us directly to the operating company structure represents our total exposure for the investment. As of September 30, 2026, as shown in our Consolidated Schedule of Investments, the cost basis and fair value of our investments in controlled companies was $3,323,679 and $3,360,718, respectively. This structure gives rise to several of the risks described in our public documents and highlighted elsewhere in this Quarterly Report. We consolidate all wholly owned and substantially wholly owned holding companies formed by us for the purpose of holding our controlled investments in operating companies. There is no significant effect of consolidating these holding companies as they hold minimal assets other than their investments in the controlled operating companies. Investment company accounting prohibits the consolidation of any operating companies.

Share Price [Table Text Block]

The following table sets forth, for the quarterly reporting periods indicated, the net asset value per common share of our common stock and the high and low sales prices for our common stock, as reported on the NASDAQ Global Select Market. Our common stock historically has traded at prices both above and below its net asset value. There can be no assurance, however, that such premium or discount, as applicable, to net asset value will be maintained. See also “Item 1A. Risk Factors” in Part I of our Annual Report on Form 10-K for the year ended June 30, 2026 for additional information about the risks and uncertainties we face.


			Stock Price				Premium (Discount) of High to NAV		Premium (Discount) of Low to NAV
	NAV(1)		High(2)		Low(2)





Year Ended June 30, 2025
First quarter	$	8.10	$	5.60	$	4.75	(30.9)	%	(41.4)	%
Second quarter		7.84		5.34		4.16	(31.9)	%	(46.9)	%
Third quarter		7.25		4.45		4.10	(38.6)	%	(43.4)	%
Fourth quarter		6.56		4.06		3.14	(38.1)	%	(52.1)	%
Year Ended June 30, 2026
First quarter	$	6.45	$	3.47	$	2.59	(46.2)	%	(59.8)	%
Second quarter		6.21		2.88		2.45	(53.6)	%	(60.5)	%
Third quarter		6.05		3.05		2.49	(49.6)	%	(58.8)	%
Fourth quarter		5.71		2.82		2.15	(50.6)	%	(62.3)	%
Year Ended June 30, 2027
First quarter	$	5.36	$	2.35	$	2.08	(56.2)	%	(61.2)	%

(1) Net asset value per common share is determined as of the last day in the relevant quarter and therefore may not reflect the net asset value per common share on the date of the high or low sales price. The NAVs shown are based on outstanding shares of our common stock at the end of each period.

(2) The High/Low Stock Price is calculated as of the closing price on a given day in the applicable quarter.

Lowest Price or Bid

$ 2.08

2.15

$ 2.49

$ 2.45

$ 2.59

3.14

$ 4.10

$ 4.16

$ 4.75

Highest Price or Bid

$ 2.35

$ 2.82

$ 3.05

$ 2.88

$ 3.47

$ 4.06

$ 4.45

$ 5.34

$ 5.60

Highest Price or Bid, Premium (Discount) to NAV [Percent]

(56.20%)

(50.60%)

(49.60%)

(53.60%)

(46.20%)

(38.10%)

(38.60%)

(31.90%)

(30.90%)

Lowest Price or Bid, Premium (Discount) to NAV [Percent]

(61.20%)

(62.30%)

(58.80%)

(60.50%)

(59.80%)

(52.10%)

(43.40%)

(46.90%)

(41.40%)

Share Price

$ 25.00

NAV Per Share

$ 5.36

$ 5.71

$ 6.05

$ 6.21

$ 6.45

$ 6.56

$ 7.25

$ 7.84

$ 8.10

$ 5.71

$ 6.56

Capital Stock, Long-Term Debt, and Other Securities [Abstract]

Outstanding Securities [Table Text Block]

The below table sets forth each class of our outstanding securities as of November 3, 2026:


Title of Class of Securities	Amount Authorized		Amount Held by Registrant or for its Account	Amount Outstanding Exclusive of Amount held by Registrant or for its Account
Common Stock	3,236,996,787		—	556,989,222		shares
Preferred Stock	763,003,213		—	66,410,432		shares
3.364% 2026 Notes	$	300,000	—	$	263,220	(1)
3.437% 2028 Notes	$	300,000	—	$	219,803
5.50% 2030 Notes	$	173,612	—	$	164,068	(2)
8.95% 2031 Notes	$	300,000	—	$	300,000
Prospect Capital InterNotes®	$	1,000,000	—	$	594,554	(3)

Credit Facility [Member]

Financial Highlights [Abstract]

Senior Securities Amount

$ 287,152,000

$ 562,328,000

$ 856,322,000

$ 562,328,000

$ 856,322,000

$ 794,796,000

$ 1,014,703,000

$ 839,464,000

$ 356,937,000

$ 237,536,000

$ 167,000,000

$ 37,000,000

$ 0

Senior Securities Coverage per Unit

$ 20,754

$ 11,340

$ 7,846

$ 11,340

$ 7,846

$ 9,746

$ 7,639

$ 9,015

$ 17,408

$ 22,000

$ 34,298

$ 155,503

$ 0

Capital Stock, Long-Term Debt, and Other Securities [Abstract]

Long Term Debt [Table Text Block]

Revolving Credit Facility

On May 15, 2007, we formed our wholly owned subsidiary, PCF, a Delaware limited liability company and a bankruptcy remote special purpose entity, which holds certain of our portfolio loan investments that are used as collateral for the revolving credit facility at PCF. Since origination of the revolving credit facility, we have renegotiated the terms and extended the commitments of the revolving credit facility several times. Most recently, effective June 28, 2024, we completed an extension and upsizing of the revolving credit facility (the “Revolving Credit Facility”). The lenders have extended commitments of $2,121,500 as of September 30, 2026. The Revolving Credit Facility includes an accordion feature which allows commitments to be increased up to $2,250,000 in the aggregate. The extension and upsizing of the Revolving Credit Facility extended the maturity date to June 28, 2029 and the revolving period through June 28, 2028, followed by an additional one-year amortization period, with distributions allowed to Prospect after the completion of the revolving period. During such one-year amortization period, all principal payments on the pledged assets will be applied to reduce the balance. At the end of the one-year amortization period, the remaining balance will become due.

As of September 30, 2026 and June 30, 2026, we had $777,956 and $623,891, respectively, available to us for borrowing under the Revolving Credit Facility, net of $287,152 and $562,328 outstanding borrowings as of the respective balance sheet dates. See Note 4. Revolving Credit Facility within our consolidated financial statements for additional details.

Long Term Debt, Title [Text Block]

Revolving Credit Facility

Long Term Debt, Principal

$ 287,152,000

$ 562,328,000

Long Term Debt, Structuring [Text Block]

The Revolving Credit Facility includes an accordion feature which allows commitments to be increased up to $2,250,000 in the aggregate. The extension and upsizing of the Revolving Credit Facility extended the maturity date to June 28, 2029 and the revolving period through June 28, 2028, followed by an additional one-year amortization period, with distributions allowed to Prospect after the completion of the revolving period. During such one-year amortization period, all principal payments on the pledged assets will be applied to reduce the balance. At the end of the one-year amortization period, the remaining balance will become due.

2017 Notes [Member]

Financial Highlights [Abstract]

Senior Securities Amount

$ 50,734,000

Senior Securities Coverage per Unit

$ 2,251

2018 Notes [Member]

Financial Highlights [Abstract]

Senior Securities Amount

$ 85,419,000

Senior Securities Coverage per Unit

$ 2,251

2019 Notes [Member]

Financial Highlights [Abstract]

Senior Securities Amount

$ 101,647,000

$ 200,000,000

Senior Securities Coverage per Unit

$ 2,452

$ 2,251

5.00 2019 Notes [Member]

Financial Highlights [Abstract]

Senior Securities Amount

$ 153,536,000

$ 300,000,000

Senior Securities Coverage per Unit

$ 2,452

$ 2,251

2020 Notes [Member]

Financial Highlights [Abstract]

Senior Securities Amount

$ 224,114,000

$ 392,000,000

Senior Securities Coverage per Unit

$ 2,365

$ 2,452

$ 2,251

2022 Notes [Member]

Financial Highlights [Abstract]

Senior Securities Amount

$ 60,501,000

$ 111,055,000

$ 258,240,000

$ 328,500,000

$ 225,000,000

Senior Securities Coverage per Unit

$ 2,733

$ 2,740

$ 2,408

$ 2,365

$ 2,452

$ 2,251

2023 Notes [Member]

Financial Highlights [Abstract]

Senior Securities Amount

$ 284,219,000

$ 319,145,000

$ 318,863,000

$ 318,675,000

$ 248,507,000

Senior Securities Coverage per Unit

$ 2,733

$ 2,740

$ 2,408

$ 2,365

$ 2,452

$ 2,251

2024 Notes [Member]

Financial Highlights [Abstract]

Senior Securities Amount

$ 233,788,000

$ 234,443,000

$ 199,281,000

Senior Securities Coverage per Unit

$ 2,408

$ 2,365

$ 2,452

$ 2,251

Senior Securities Average Market Value per Unit

$ 959

$ 1,002

$ 1,029

$ 1,027

6.375 2024 Notes [Member]

Financial Highlights [Abstract]

Senior Securities Amount

$ 81,240,000

$ 81,389,000

$ 99,780,000

$ 99,726,000

Senior Securities Coverage per Unit

$ 2,970

$ 2,733

$ 2,740

$ 2,408

$ 2,365

2025 Notes [Member]

Financial Highlights [Abstract]

Senior Securities Amount

$ 156,168,000

$ 201,250,000

Senior Securities Coverage per Unit

$ 3,155

$ 2,970

$ 2,733

$ 2,740

$ 2,408

$ 2,365

2026 Notes [Member]

Financial Highlights [Abstract]

Senior Securities Amount

$ 400,000,000

Senior Securities Coverage per Unit

$ 3,155

$ 2,970

$ 2,733

$ 2,740

Capital Stock, Long-Term Debt, and Other Securities [Abstract]

Long Term Debt, Title [Text Block]

Original 2026 Notes

Long Term Debt, Structuring [Text Block]

The Original 2026 Notes bore interest at a rate of 3.706% per year, payable semi-annually on July 22, and January 22 of each year, beginning on July 22, 2021. Total proceeds from the issuance of the 2026 Notes, net of underwriting discounts and offering costs, were $317,720. On February 19, 2021, we issued an additional $75,000 aggregate principal amount of unsecured notes that mature on January 22, 2026 (the “Additional 2026 Notes”, and together with the Original 2026 Notes, the “2026 Notes”). The Additional 2026 Notes were a further issuance of, and are fully fungible and rank equally in right of payment with, the Original 2026 Notes and bore interest at a rate of 3.706% per year, payable semi-annually on July 22 and January 22 of each year, beginning July 22, 2021.

3.364 2026 Notes [Member]

Financial Highlights [Abstract]

Senior Securities Amount

$ 263,220,000

$ 264,486,000

$ 300,000,000

$ 264,486,000

$ 300,000,000

Senior Securities Coverage per Unit

$ 3,877

$ 3,394

$ 3,194

$ 3,394

$ 3,194

$ 3,155

$ 2,970

$ 2,733

$ 2,740

Capital Stock, Long-Term Debt, and Other Securities [Abstract]

Long Term Debt, Title [Text Block]

3.364% 2026 Notes

Long Term Debt, Principal

$ 263,220,000

264,486,000

Long Term Debt, Structuring [Text Block]

The 3.364% 2026 Notes bear interest at a rate of 3.364% per year, payable semi-annually on November 15, and May 15 of each year, beginning on November 15, 2021.

3.437 2028 Notes [Member]

Financial Highlights [Abstract]

Senior Securities Amount

$ 220,803,000

$ 254,749,000

$ 300,000,000

$ 254,749,000

$ 300,000,000

Senior Securities Coverage per Unit

$ 3,877

$ 3,394

$ 3,194

$ 3,394

$ 3,194

$ 3,155

$ 2,970

$ 2,733

Capital Stock, Long-Term Debt, and Other Securities [Abstract]

Long Term Debt, Title [Text Block]

3.437% 2028 Notes

Long Term Debt, Principal

$ 220,803,000

254,749,000

Long Term Debt, Structuring [Text Block]

The 3.437% 2028 Notes bear interest at a rate of 3.437% per year, payable semi-annually on April 15 and October 15 of each year, beginning on April 15, 2022.

2028 Notes [Member]

Financial Highlights [Abstract]

Senior Securities Amount

$ 70,761,000

$ 55,000,000

Senior Securities Coverage per Unit

$ 2,408

$ 2,365

$ 2,452

Senior Securities Average Market Value per Unit

$ 950

$ 984

$ 1,004

2029 Notes [Member]

Financial Highlights [Abstract]

Senior Securities Amount

$ 69,170,000

Senior Securities Coverage per Unit

$ 2,740

$ 2,408

$ 2,365

Senior Securities Average Market Value per Unit

$ 1,028

$ 970

$ 983

5.50% 2030 Notes [Member]

Financial Highlights [Abstract]

Senior Securities Amount

$ 167,755,000

$ 182,153,000

Senior Securities Coverage per Unit

$ 3,877

$ 3,394

Senior Securities Average Market Value per Unit

$ 93.60

$ 91.65

Capital Stock, Long-Term Debt, and Other Securities [Abstract]

Long Term Debt, Principal

$ 167,755,000

Prospect Capital InterNotes [Member]

Financial Highlights [Abstract]

Senior Securities Amount

$ 598,228,000

$ 614,879,000

$ 647,232,000

$ 614,879,000

$ 647,232,000

$ 504,028,000

$ 358,105,000

$ 347,564,000

$ 508,711,000

$ 680,229,000

$ 707,699,000

$ 760,924,000

$ 980,494,000

Senior Securities Coverage per Unit

$ 3,877

$ 3,394

$ 3,194

$ 3,394

$ 3,194

$ 3,155

$ 2,970

$ 2,733

$ 2,740

$ 2,408

$ 2,365

$ 2,452

$ 2,251

Capital Stock, Long-Term Debt, and Other Securities [Abstract]

Long Term Debt [Table Text Block]

Prospect Capital InterNotes®

On February 13, 2020, we entered into a new selling agent agreement with InspereX LLC (formerly known as “Incapital LLC”) (as amended, the “Selling Agent Agreement”), authorizing the issuance and sale from time to time of up to $1,000,000 of Prospect Capital InterNotes® (collectively with previously authorized selling agent agreements, the “InterNotes® Offerings”). Additional agents may be appointed by us from time to time in connection with the InterNotes® Offering and become parties to the Selling Agent Agreement.

Certain notes issued through the InterNotes® Offerings have been repaid and we have, from time to time, repurchased or redeemed such other notes and, therefore, as of September 30, 2026 and June 30, 2026, the aggregate principal amount of Prospect Capital InterNotes® outstanding were $598,228 and $614,879, respectively. See Note 7. Prospect Capital InterNotes® within our consolidated financial statements for additional details.

Long Term Debt, Title [Text Block]

InterNotes® Offerings

Long Term Debt, Principal

$ 598,228,000

$ 614,879,000

Long Term Debt, Structuring [Text Block]

Public Notes [Member]

Capital Stock, Long-Term Debt, and Other Securities [Abstract]

Long Term Debt [Table Text Block]

Public Notes

On January 22, 2021, we issued $325,000 aggregate principal amount of unsecured notes that mature on January 22, 2026 (the “Original 2026 Notes”). The Original 2026 Notes bore interest at a rate of 3.706% per year, payable semi-annually on July 22, and January 22 of each year, beginning on July 22, 2021. Total proceeds from the issuance of the 2026 Notes, net of underwriting discounts and offering costs, were $317,720. On February 19, 2021, we issued an additional $75,000 aggregate principal amount of unsecured notes that mature on January 22, 2026 (the “Additional 2026 Notes”, and together with the Original 2026 Notes, the “2026 Notes”). The Additional 2026 Notes were a further issuance of, and are fully fungible and rank equally in right of payment with, the Original 2026 Notes and bore interest at a rate of 3.706% per year, payable semi-annually on July 22 and January 22 of each year, beginning July 22, 2021. Total proceeds from the issuance of the Additional 2026 Notes, net of underwriting discounts and offering costs, were $74,061.

During the year ended June 30, 2025, we repurchased $57,053 aggregate principal amount of the 2026 Notes at a weighted average price of 97.44%, including commissions, plus accrued and unpaid interest. As a result, we recognized a net realized gain of $1,264 from the extinguishment of debt in the amount of the difference between the reacquisition price and the net carrying amount of the repurchased 2026 Notes.

During the year ended June 30, 2025, we commenced a tender offer to purchase for cash any and all of the aggregate principal amount of our outstanding 2026 Notes at a purchase price of 99.00%, plus accrued and unpaid interest. As a result, $135,731 aggregate principal amount of the 2026 Notes were validly tendered and accepted, and we recognized a net realized gain of $874 from the extinguishment of debt in the amount of the difference between the reacquisition price and the net carrying amount of the tendered 2026 Notes.

On June 18, 2025, we redeemed the remaining outstanding principal amount of $207,216 of the 2026 Notes, at a price of 100.00%, plus accrued and unpaid interest. The transaction resulted in our recognizing a loss of $998 during the year ended June 30, 2025. Following the redemption, none of the 2026 Notes remained outstanding.

On May 27, 2021, we issued $300,000 aggregate principal amount of unsecured notes that mature on November 15, 2026 (the “3.364% 2026 Notes”). The 3.364% 2026 Notes bear interest at a rate of 3.364% per year, payable semi-annually on November 15, and May 15 of each year, beginning on November 15, 2021. Total proceeds from the issuance of the 3.364% 2026 Notes, net of underwriting discounts and offering costs, were $293,283.

As of September 30, 2026 and June 30, 2026, the outstanding aggregate principal amount of the 3.364% 2026 Notes were $263,220 and $264,486, respectively.

On September 30, 2021, we issued $300,000 aggregate principal amount of unsecured notes that mature on October 15, 2028 (the “3.437% 2028 Notes”). The 3.437% 2028 Notes bear interest at a rate of 3.437% per year, payable semi-annually on April 15 and October 15 of each year, beginning on April 15, 2022. Total proceeds from the issuance of the 3.437% 2028 Notes, net of underwriting discounts and offering costs, were $291,798.

During the year ended June 30, 2026, we repurchased $45,251 aggregate principal amount of the 3.437% 2028 Notes at a weighted average price of 91.66%, including commissions, plus accrued and unpaid interest. As a result, we recognized a net realized gain of $3,526 from the extinguishment of debt in the amount of the difference between the reacquisition price and the net carrying amount of the repurchased 3.437% 2028 Notes.

As of September 30, 2026 and June 30, 2026, the outstanding aggregate principal amount of the 3.437% 2028 Notes was $220,803 and $254,749, respectively.

On October 30, 2025, we issued approximately $167,637 in aggregate principal amount of 5.50% Series A Notes due 2030 (the “5.50% 2030 Notes”) that mature on December 31, 2030 and bear interest at a rate of 5.50% per annum payable quarterly in arrears on March 31, June 30, September 30 and December 31 of each year, commencing on March 31, 2026. The 5.50% 2030 Notes are denominated in Israeli Shekels. After the deduction of offering discounts, fees and other offering expenses, we received net proceeds of approximately $159,531.

As of September 30, 2026 and June 30, 2026, the outstanding aggregate principal amount of the 5.50% 2030 Notes were $167,755 and $182,153, respectively.

The 2026 Notes, the 3.364% 2026 Notes, the 3.437% 2028 Notes, and the 5.50% 2030 Notes (collectively, the “Public Notes”) are direct unsecured obligations and rank equally with all of our unsecured indebtedness from time to time outstanding. See Note 5. Public Notes within our consolidated financial statements for additional details.

In connection with the issuance of the 5.50% 2030 Notes, the Company entered into a series of forward currency contracts designated as hedging instruments under ASC 815. The Company uses derivative instruments in connection with its risk management activities to reduce exposure to foreign currency exchange rate risk arising from foreign-denominated interest payments and foreign-denominated principal on the 5.50% 2030 Notes. Derivative instruments are carried at fair value on the Consolidated Statement of Assets and Liabilities.

As of September 30, 2026 and June 30, 2026, the fair value of the derivative assets and derivative liabilities were $14,373 and 18,900, and $0 and $0, respectively.