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INVESTMENTS (Tables)
 3 Months Ended
Jun. 30, 2025
Investments, Debt and Equity Securities [Abstract]  
Schedule of Investments by Security Type at Fair Value and Investments Valued Using Level 3 Inputs
As of June 30, 2025 and March 31, 2025, our investments, by security type, at fair value were categorized as follows within the ASC 820 fair value hierarchy:
Fair Value Measurements
Quoted Prices in
Active Markets
for Identical
Assets
(Level 1)
Significant
Other
Observable Inputs
(Level 2)
Significant
Unobservable
Inputs
(Level 3)
Fair Value
As of June 30, 2025:
Secured first lien debt
$— $— $557,057 $557,057 
Secured second lien debt
— — 93,340 93,340 
Preferred equity
— — 325,997 325,997 
Common equity/equivalents
— 

— 55,341 55,341 
Total$— $— $1,031,735 $1,031,735 
Investments measured at NAV (A)
— — — 5,010 
Total Investments as of June 30, 2025
$— $— $1,031,735 $1,036,745 
Fair Value Measurements
Quoted Prices in
Active Markets
for Identical
Assets
(Level 1)
Significant
Other
Observable
Inputs
(Level 2)
Significant
Unobservable
Inputs
(Level 3)
Fair Value
As of March 31, 2025:
Secured first lien debt
$— $— $514,334 $514,334 
Secured second lien debt
— — 103,580 103,580 
Preferred equity
— — 302,163 302,163 
Common equity/equivalents
— — 54,268 54,268 
Total$— $— $974,345 $974,345 
Investments measured at NAV (A)
— — — 4,975 
Total Investments as of March 31, 2025
$— $— $974,345 $979,320 
(A)Includes our investment in Gladstone Alternative as of June 30, 2025 and March 31, 2025. Investments that are measured at fair value using NAV as a practical expedient have not been categorized in the fair value hierarchy. The fair value amounts presented in this table are intended to permit reconciliation of the fair value hierarchy to the amounts presented elsewhere in this Quarterly Report.
The following table presents our investments, valued using Level 3 inputs within the ASC 820 fair value hierarchy, and carried at fair value as of June 30, 2025 and March 31, 2025, by caption on our accompanying Consolidated Statements of Assets and Liabilities, and by security type:
Total Recurring Fair Value Measurements
Reported in Consolidated Statements
of Assets and Liabilities
Valued Using Level 3 Inputs
June 30, 2025March 31, 2025
Non-Control/Non-Affiliate Investments
Secured first lien debt$346,601 $300,751 
Secured second lien debt93,340 92,964 
Preferred equity213,075 200,606 
Common equity/equivalents55,341 54,268 
Total Non-Control/Non-Affiliate Investments708,357 648,589 
Affiliate Investments
Secured first lien debt210,088 213,240 
Secured second lien debt— 10,616 
Preferred equity112,922 101,557 
Common equity/equivalents— — 
Total Affiliate Investments323,010 325,413 
Control Investments
Secured first lien debt368 343 
Secured second lien debt— — 
Preferred equity— — 
Common equity/equivalents— — 
Total Control Investments368 343 
Total investments at fair value using Level 3 inputs$1,031,735 $974,345 
Schedule of Fair Value Measurement Inputs and Valuation Techniques The table below is not intended to be all-inclusive, but rather provides information on the significant Level 3 inputs as they relate to our fair value measurements. The weighted-average calculations in the table below are based on the principal balances for all debt-related calculations and on the cost basis for all equity-related calculations for the particular input.
Quantitative Information about Level 3 Fair Value Measurements
Fair Value as ofValuation
Technique/
Methodology		Unobservable
Input		Range / Weighted-Average as of
June 30, 2025March 31, 2025June 30, 2025March 31, 2025
Secured first
lien debt		$557,057 $514,334 TEVEBITDA multiple
3.7x – 8.0x /
6.0x
3.7x – 7.9x /
6.0x
EBITDA
$408 – $25,038 /
$11,738
$1,208 – $25,038 / $12,162
Revenue multiple
0.3x – 0.6x /
0.4x
0.3x – 0.6x /
0.4x
Revenue
$21,248 – $94,874 /
$75,263
$6,690 – $102,791 / $72,303
Secured second
lien debt		93,340 90,956 TEVEBITDA multiple
5.5x – 7.3x /
 6.7x
6.1x – 7.2x /
6.8x
EBITDA
$5,350 – $26,487 /
$18,346
$3,637 – $24,234 / $16,900
— 12,624 Yield AnalysisDiscount RateN/A
20.7% – 20.7% / 20.7%
Preferred
equity		325,997 302,163 TEVEBITDA multiple
3.7x – 8.0x /
6.1x
3.7x – 7.9x /
6.1x
EBITDA
$408 – $25,038 /
$9,859
$2,153 – $25,038 / $11,029
Revenue multiple
0.3x – 0.6x /
0.4x
0.3x – 0.6x /
0.4x
Revenue
$21,248 – $94,874 /
$72,647
$6,690 – $102,791 / $53,604
Common equity/
equivalents		55,341 54,268 TEVEBITDA multiple
5.5x – 7.3x /
6.9x
5.5x – 7.2x /
6.8x
EBITDA
$894 – $26,487 /
$19,788
$1,208 – $24,234 / $18,562
Total$1,031,735 $974,345 
Schedule of Changes in Level 3 Fair Value Measurements of Investments
The following tables provide our portfolio’s changes in fair value, broken out by security type, during the three months ended June 30, 2025 and 2024 for all investments for which the Adviser determines fair value using unobservable (Level 3) inputs.
Fair Value Measurements Using Significant Unobservable Inputs (Level 3)

Secured
First Lien
Debt		Secured
Second Lien
Debt
Preferred
Equity
Common
Equity/
Equivalents		Total
Three Months ended June 30, 2025:
Fair value as of March 31, 2025
$514,334 $103,580 $302,163 $54,268 $974,345 
Total gain (loss):
Net realized gain (loss)(A)
— — — — — 
Net unrealized appreciation (depreciation)(B)
1,152 376 (3,683)1,073 (1,082)
Reversal of previously recorded (appreciation) depreciation upon realization(B)
— — — — — 
New investments, repayments and settlements(C):
Issuances / originations
45,941 — 16,901 — 62,842 
Settlements / repayments
(4,370)— — — (4,370)
Sales
— — — — — 
Transfers(D)
— (10,616)10,616 — — 
Fair value as of June 30, 2025
$557,057 $93,340 $325,997 $55,341 $1,031,735 
Secured
First Lien
Debt
Secured
Second Lien
Debt
Preferred
Equity
Common
Equity/
Equivalents
Total
Three Months ended June 30, 2024:
Fair value as of March 31, 2024
$474,856 $138,703 $213,480 $93,447 $920,486 
Total gain (loss):
Net realized gain (loss)(A)
— — — — — 
Net unrealized (depreciation)
appreciation (B)
(9,235)(876)(889)(7,946)(18,946)
Reversal of previously recorded (appreciation) depreciation upon realization(B)
— — — — — 
New investments, repayments and settlements(C):
Issuances / originations
598 — — — 598 
Settlements / repayments
(3,000)— — — (3,000)
Sales
— — — — — 
Transfers
— — — — — 
Fair value as of June 30, 2024
$463,219 $137,827 $212,591 $85,501 $899,138 
Included in net realized gain (loss) on investments on our accompanying Consolidated Statements of Operations for the respective three months ended June 30, 2025 and 2024.
(B)Included in net unrealized appreciation (depreciation) of investments on our accompanying Consolidated Statements of Operations for the respective three months ended June 30, 2025 and 2024.
(C)Includes increases in the cost basis of investments resulting from new portfolio investments, the amortization of discounts and other non-cash disbursements to portfolio companies, as well as decreases in the cost basis of investments resulting from principal repayments or sales, the amortization of premiums and acquisition costs, and other cost-basis adjustments.
(D)Transfers represent secured second lien debt of PSI Molded Plastics, Inc. ("PSI Molded") with a total cost basis of $10.6 million, which was converted to preferred equity in June 2025.
Schedule of Investment Concentrations
The following table summarizes our investments by security type as of June 30, 2025 and March 31, 2025:
June 30, 2025March 31, 2025
CostFair ValueCostFair Value
Secured first lien debt$625,596 62.7 %$557,057 53.7 %$584,026 62.2 %$514,334 52.5 %
Secured second lien debt93,340 9.4 %93,340 9.0 %103,956 11.1 %103,580 10.6 %
Total debt718,936 72.1 %650,397 62.7 %687,982 73.3 %617,914 63.1 %
Preferred equity229,005 23.0 %325,997 31.5 %201,487 21.5 %302,163 30.9 %
Common equity/equivalents49,597 4.9 %60,351 5.8 %49,597 5.2 %59,243 6.0 %
Total equity/equivalents278,602 27.9 %386,348 37.3 %251,084 26.7 %361,406 36.9 %
Total investments
$997,538 100.0 %$1,036,745 100.0 %$939,066 100.0 %$979,320 100.0 %
Investments at fair value consisted of the following industry classifications as of June 30, 2025 and March 31, 2025:
June 30, 2025March 31, 2025
Fair ValuePercentage of
Total Investments		Fair ValuePercentage of Total Investments
Diversified/Conglomerate Services$188,845 18.2%$170,360 17.4%
Home and Office Furnishings, Housewares, and Durable Consumer Products150,749 14.5%159,236 16.3%
Machinery (Non-Agriculture, Non-Construction, and Non-Electronic)109,985 10.6%105,432 10.8%
Aerospace and Defense105,170 10.1%107,869 10.9%
Leisure, Amusement, Motion Pictures, and Entertainment79,588 7.7%78,460 8.0%
Oil and Gas72,286 7.0%69,589 7.1%
Electronics71,334 6.9%71,573 7.2%
Buildings and Real Estate69,075 6.7%69,320 7.1%
Chemicals, Plastics, and Rubber54,980 5.3%11,612 1.2%
Healthcare, Education, and Childcare48,197 4.6%51,501 5.3%
Mining, Steel, Iron and Non-Precious Metals43,505 4.2%41,010 4.2%
Cargo Transport13,000 1.3%12,624 1.3%
Printing and Publishing12,611 1.2%11,681 1.2%
Other < 2.0%17,420 1.7%19,053 2.0%
Total investments$1,036,745 100.0%$979,320 100.0%
Investments at fair value were included in the following geographic regions of the U.S. and Canada as of June 30, 2025 and March 31, 2025:
June 30, 2025March 31, 2025
LocationFair ValuePercentage of
Total Investments		Fair ValuePercentage of
Total Investments
United States
South
$389,680 37.6 %$317,294 32.4 %
West
229,132 22.1 %222,062 22.7 %
Midwest
212,997 20.5 %227,415 23.2 %
Northeast
176,909 17.1 %182,669 18.7 %
Canada28,027 2.7 %29,880 3.0 %
Total investments$1,036,745 100.0 %$979,320 100.0 %
Schedule of Investment Principal Repayments
The following table summarizes the contractual principal repayment and maturity of our investment portfolio by fiscal year, assuming no voluntary prepayments, as of June 30, 2025:

Amount
For the remaining nine months ending March 31, 2026
$15,000 
For the fiscal years ending March 31:
2027124,124 
2028120,282 
2029254,844 
2030159,506 
Thereafter45,180 
Total contractual repayments$718,936 
Investments in equity securities278,602 
Total cost basis of investments held as of June 30, 2025:
$997,538