0001653384 rway:Sec750NotesDue2027Member 2026-10-13 2026-10-13 0001653384 rway:CommonStockParValue001PerShareMember 2026-10-13 2026-10-13 0001653384 rway:Notes725Due2031Member 2026-10-13 2026-10-13 0001653384 2026-10-13 2026-10-13 0001653384 rway:NotesDue2031Member 2026-10-13 2026-10-13 0001653384 rway:NotesDue2027Member 2026-10-13 2026-10-13 false 0001653384 8-K 2026-10-13 Runway Growth Finance Corp. MD 814-01180 47-5049745 205 N. Michigan Ave. Suite 4200 Chicago IL 60601 (312) 698-6902 Not Applicable false false false false Common Stock, par value $0.01 per share RWAY NASDAQ 7.50% Notes due 2027 RWAYL NASDAQ 7.25% Notes due 2031 RWAYI NASDAQ 9.00% Notes due 2027 SWKHL NASDAQ 7.75% Notes due 2031 RWAYM NASDAQ true false