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Investments - Consolidated Statements of Assets and Liabilities for PSSL (Parenthetical) (Details) - USD ($) $ in Thousands | Jun. 30, 2025 | Sep. 30, 2024
--- | --- | ---
Investments at cost | $ 2,454,810 | [1] | $ 1,994,940 | [2],[3],[4]
Cash and cash equivalents, cost | 102,726 |  | 112,046 |
2037 Asset-backed debt, net | 246,000 |  | 0 |
PennantPark Senior Secured Loan Fund I LLC |  |  |  |
Investments at cost | 1,080,993 |  | 928,983 |
Cash and cash equivalents, cost | 45,728 |  | 68,429 |
2035 Asset backed debt payable, net | 0 |  | 246,000 |
2036 Asset-backed debt, net | 246,000 |  |  |
2037 Asset-backed debt, net |  |  | 0 |
2037 R Asset-backed debt, net | 246,000 |  | 0 |
Unfunded commitments to fund investments | 0 |  | 600 |
2035 Asset-backed debt | PennantPark Senior Secured Loan Fund I LLC |  |  |  |
Unamortized Deferred Financing Costs | 0 |  | 2,066 |
2036 Asset-backed debt | PennantPark Senior Secured Loan Fund I LLC |  |  |  |
Unamortized Deferred Financing Costs | 1,413 |  | 1,628 |
2037 Asset-Backed Debt | PennantPark Senior Secured Loan Fund I LLC |  |  |  |
2037 Asset-backed debt, net |  |  | 0 |
Unamortized Deferred Financing Costs | 1,990 |  |  |
2037 R Asset-backed debt | PennantPark Senior Secured Loan Fund I LLC |  |  |  |
Unamortized Deferred Financing Costs | $ 2,629 |  | $ 0 |
[1] | As of June 30, 2025, all investments are in U.S. companies.
[2] | The provisions of the 1940 Act classify investments based on the level of control that we maintain in a particular portfolio company. As defined in the 1940 Act, a company is generally presumed to be “non-controlled” when we own 25% or less of the portfolio company’s voting securities and “controlled” when we own more than 25% of the portfolio company’s voting securities.
[3] | The provisions of the 1940 Act classify investments further based on the level of ownership that we maintain in a particular portfolio company. As defined in the 1940 Act, a company is generally deemed as “non-affiliated” when we own less than 5% of a portfolio company’s voting securities and “affiliated” when we own 5% or more of a portfolio company’s voting securities.
[4] | All investments are in U.S. companies unless noted otherwise.

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