0001552198 whfcl:SevenPointEightSevenFivePercentNotesDueTwentyTwentyEightMember 2026-09-15 2026-09-15 0001552198 us-gaap:CommonStockMember 2026-09-15 2026-09-15 0001552198 2026-09-15 2026-09-15 0001552198 false 8-K 2026-09-15 WhiteHorse Finance, Inc. 814-00967 DE 45-4247759 1450 Brickell Avenue 31st Floor Miami FL 33131 305 381-6999 false false false false Common Stock, par value $0.001 per share WHF NASDAQ 7.875% Notes due 2028 WHFCL NASDAQ false