v3.26.1
FAIR VALUE MEASUREMENTS (Tables)
12 Months Ended
Mar. 31, 2026
Fair Value Disclosures [Abstract]  
Schedule of Investment Portfolio by Level
The following fair value hierarchy tables set forth our investment portfolio by level as of March 31, 2026 and March 31, 2025 (in thousands):
Fair Value Measurements
at March 31, 2026 Using
Asset CategoryTotalQuoted Prices in Active Markets for Identical Assets
(Level 1)
Significant Other Observable Inputs
(Level 2)
Significant Unobservable Inputs
(Level 3)
First lien loans$1,890,406 $— $— $1,890,406 
Second lien loans24,931 — — 24,931 
Subordinated debt1,157 — — 1,157 
Preferred equity74,638 — — 74,638 
Common equity & warrants102,276 — — 102,276 
Earnout4,038 — — 4,038 
Total Investments$2,097,446 $— $— $2,097,446 
Fair Value Measurements
at March 31, 2025 Using
Asset Category
TotalQuoted Prices in Active Markets for Identical Assets
(Level 1)
Significant Other Observable Inputs
(Level 2)
Significant Unobservable Inputs
(Level 3)
First lien loans$1,586,622 $— $— $1,586,622 
Second lien loans18,066 — — 18,066 
Subordinated debt1,218 — — 1,218 
Preferred equity102,918 — — 102,918 
Common equity & warrants76,475 — — 76,475 
Total Investments$1,785,299 $— $— $1,785,299 
Schedule of Valuation Techniques and Significant Level 3 Inputs
The tables below present the Valuation Techniques and Significant Unobservable Inputs (ranges and weighted averages) used in the valuation of CSWC’s debt and equity securities at March 31, 2026 and March 31, 2025. Significant Level 3 Inputs were weighted by the relative fair value of the investments. The tables are not intended to be all inclusive, but instead capture the significant unobservable inputs relevant to our determination of fair value.
Fair Value atSignificant
ValuationMarch 31, 2026UnobservableWeighted
TypeTechnique(in thousands)InputsRangeAverage
First lien loansIncome Approach$1,786,594  Discount Rate 
4.0% - 126.1%
11.7%
Market Approach85,731 Cost
95.2 - 100.0
99.0
Enterprise Value Waterfall Approach18,081 EBITDA Multiple
8.4x - 9.0x
8.6x
Discount Rate
12.6% - 19.1%
15.0%
Second lien loansIncome Approach24,931  Discount Rate 
7.9% - 17.0%
11.1%
Subordinated debtIncome Approach600  Discount Rate 
10.9% - 10.9%
10.9%
Enterprise Value Waterfall Approach557 EBITDA Multiple
6.0x - 8.0x
6.6x
Discount Rate
14.3% - 17.4%
15.3%
Preferred equityEnterprise Value Waterfall Approach73,638  EBITDA Multiple 
4.0x - 13.8x
7.2x
Discount Rate
11.5% - 47.6%
17.8%
Market Approach1,000 Cost
100.0 - 100.0
100.0
Common equity & warrantsEnterprise Value Waterfall Approach101,526  EBITDA Multiple 
3.5x - 16.4x
7.9x
Discount Rate
10.5% - 30.8%
14.0%
Market Approach750 Cost
100.0 - 100.0
100.0
EarnoutIncome Approach4,038 Discount Rate
33.4% - 33.4%
33.4%
Total Level 3 Investments$2,097,446 

           
Fair Value atSignificant
ValuationMarch 31, 2025UnobservableWeighted
TypeTechnique(in thousands)InputsRangeAverage
First lien loansIncome Approach$1,448,656 Discount Rate
5.2% - 64.7%
12.8%
6,923 Third Party Broker Quote
40.0 - 100.0
79.8
Market Approach125,500 Cost
89.8 - 100.0
97.9
Enterprise Value Waterfall Approach5,543 EBITDA Multiple
3.0x - 9.0x
3.0x
Discount Rate
21.0% - 49.2%
21.0%
Second lien loansIncome Approach18,066 Discount Rate
9.5% - 41.2%
13.3%
Enterprise Value Waterfall Approach— EBITDA Multiple
3.0x - 3.0x
0.0x
Discount Rate
21.0% - 21.0%
0.0%
Subordinated debtIncome Approach538 Discount Rate
14.4% - 14.4%
14.4%
58 Third Party Broker Quote
25.0 - 25.0
25.0
Market Approach65 Cost
100.0 - 100.0
100.0
Enterprise Value Waterfall Approach557 EBITDA Multiple
6.1x - 7.6x
6.6x
Discount Rate
13.3% - 17.6%
14.7%
Preferred equityEnterprise Value Waterfall Approach100,018 EBITDA Multiple
3.0x - 16.9x
8.8x
Discount Rate
11.1% - 49.2%
15.9%
Market Approach2,900 Cost
100.0 - 100.0
100.0
Common equity & warrantsEnterprise Value Waterfall Approach74,878 EBITDA Multiple
3.0x - 16.0x
8.4x
Discount Rate
11.9% - 23.3%
14.4%
Market Approach1,597 Cost
100.0 - 100.0
100.0
Total Level 3 Investments$1,785,299 
Schedule of Changes in Fair Value of Investments Measured Using Level 3 Inputs
The following tables provide a summary of changes in the fair value of investments measured using Level 3 inputs during the year ended March 31, 2026 and 2025 (in thousands):
Fair Value March 31, 2025Realized & Unrealized Gains (Losses)
Purchases of Investments (1)
RepaymentsPIK Interest CapitalizedDivestituresConversion/Exchange of SecurityFair Value March 31, 2026YTD Unrealized Appreciation (Depreciation) on Investments held at period end
First lien loans$1,586,622 $(37,674)$680,918 $(310,505)$13,979 $(30,987)$(11,947)$1,890,406 $(32,632)
Second lien loans18,066 1,144 (46)(2,308)79 — 7,996 24,931 1,290 
Subordinated debt1,218 20 57 (146)— — 1,157 20 
Preferred equity102,918 (5,307)9,038 — — (31,323)(688)74,638 (1,390)
Common equity & warrants76,475 26,132 6,689 — — (11,659)4,639 102,276 20,813 
Earnout— 581 3,457 — — — — 4,038 581 
Total Investments$1,785,299 $(15,104)$700,113 $(312,959)$14,066 $(73,969)$— $2,097,446 $(11,318)
Fair Value March 31, 2024Realized & Unrealized Gains (Losses)Purchases of Investments (1)(2)RepaymentsPIK Interest CapitalizedDivestituresConversion/Exchange of SecurityFair Value March 31, 2025YTD Unrealized Appreciation (Depreciation) on Investments held at period end
First lien loans$1,309,449 $(61,142)$616,629 $(244,854)$12,843 $(31,584)$(14,719)$1,586,622 $(21,908)
Second lien loans33,774 (6,960)37 (3,840)70 — (5,015)18,066 (5,062)
Subordinated debt1,336 36 57 (75)17 — (153)1,218 28 
Preferred equity71,127 25,094 9,767 — — (16,920)13,850 102,918 18,671 
Common equity & warrants60,875 3,593 7,036 — — (1,066)6,037 76,475 4,388 
Total Investments$1,476,561 $(39,379)$633,526 $(248,769)$12,930 $(49,570)$— $1,785,299 $(3,883)

(1)Includes purchases of new investments, as well as discount accretion on existing investments.
(2)Included are distributions-in-kind of investments received in connection with the dissolution and liquidation of I-45 SLF LLC, the joint venture between the Company and Main Street Capital Corporation.