v3.25.4
Investments - Investment Cost and Fair Value by Type and by Industry (Details) - USD ($)
$ in Thousands
Dec. 31, 2025
Dec. 31, 2024
Schedule of Investments [Line Items]    
Cost $ 1,525,141 [1],[2] $ 1,451,005 [3]
Fair Value 1,512,098 [1],[2] 1,445,655 [3]
Business Services    
Schedule of Investments [Line Items]    
Cost 483,935 376,770
Fair Value 484,215 374,000
Software    
Schedule of Investments [Line Items]    
Cost 356,465 434,127
Fair Value 356,217 435,576
Financial Services & Technology    
Schedule of Investments [Line Items]    
Cost 238,890 204,730
Fair Value 239,885 205,693
Healthcare    
Schedule of Investments [Line Items]    
Cost 221,363 235,811
Fair Value 210,328 230,525
Consumer Services    
Schedule of Investments [Line Items]    
Cost 79,607 64,686
Fair Value 79,612 65,029
Education    
Schedule of Investments [Line Items]    
Cost 34,808 24,798
Fair Value 33,269 24,784
Distribution & Logistics    
Schedule of Investments [Line Items]    
Cost 31,396 29,933
Fair Value 31,065 29,464
Packaging    
Schedule of Investments [Line Items]    
Cost 25,052 18,322
Fair Value 23,653 18,436
Business Products    
Schedule of Investments [Line Items]    
Cost 21,408 8,427
Fair Value 21,626 8,496
Consumer Products    
Schedule of Investments [Line Items]    
Cost 16,243 22,804
Fair Value 16,243 20,894
Food & Beverage    
Schedule of Investments [Line Items]    
Cost 9,707 24,488
Fair Value 9,698 26,649
Specialty Chemicals & Materials    
Schedule of Investments [Line Items]    
Cost 6,267 6,109
Fair Value 6,287 6,109
First lien    
Schedule of Investments [Line Items]    
Cost 1,473,620 1,408,830
Fair Value 1,462,772 1,404,867
Second lien    
Schedule of Investments [Line Items]    
Cost 20,653 31,354
Fair Value 19,288 29,959
Subordinated    
Schedule of Investments [Line Items]    
Cost 11,423 4,756
Fair Value 11,549 4,766
Equity and other    
Schedule of Investments [Line Items]    
Cost 19,445 6,065
Fair Value $ 18,489 $ 6,063
[1] Indicates assets that the Company deems to be "non-qualifying assets" under Section 55(a) of the Investment Company Act of 1940, as amended. Qualifying assets must represent at least 70.0% of the Company's total assets at the time of acquisition of any additional non-qualifying assets. As of December 31, 2025, 3.23% of the Company's total assets are represented by investments at fair value that are considered non-qualifying assets.
[2] NMF SLF I, Inc. (the "Company") generally acquires its investments in private transactions exempt from registration under the Securities Act of 1933, as amended (the "Securities Act"). These investments are generally subject to certain limitations on resale, and may be deemed to be "restricted securities" under the Securities Act
[3] NMF SLF I, Inc. (the "Company") generally acquires its investments in private transactions exempt from registration under the Securities Act of 1933, as amended (the "Securities Act"). These investments are generally subject to certain limitations on resale, and may be deemed to be "restricted securities" under the Securities Act.