0001653384 rway:NotesDue2027Member 2026-10-01 2026-10-01 0001653384 2026-10-01 2026-10-01 0001653384 rway:Sec750NotesDue2027Member 2026-10-01 2026-10-01 0001653384 rway:Notes725Due2031Member 2026-10-01 2026-10-01 0001653384 rway:CommonStockParValue001PerShareMember 2026-10-01 2026-10-01 iso4217:USD false 0001653384 8-K 2026-10-01 Runway Growth Finance Corp. MD 814-01180 47-5049745 205 N. Michigan Ave. Suite 4200 Chicago IL 60601 (312) 698-6902 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 true false

On October 1, 2026, in connection with a previously announced public offering, Runway Growth Finance Corp. (the “Company”) and U.S. Bank Trust Company, National Association, as trustee (the “Trustee”), entered into the Fifth Supplemental Indenture (the “Fifth Supplemental Indenture”) to the Base Indenture, dated July 28, 2022, between the Company and the Trustee (together with the Fifth Supplemental Indenture, the “Indenture”). The Fifth Supplemental Indenture relates to the Company’s issuance, offering and sale of $46,329,125 in aggregate principal amount of its 7.75% Notes due 2031 (the “Notes”). <div>The Notes will mature on October 1, 2031, unless previously redeemed or repurchased in accordance with their terms. The interest rate of the Notes is 7.75% per year and will be paid quarterly in arrears on March 1, June 1, September 1 and December 1 of each year, beginning on December 1, 2026. The Notes are the Company’s direct unsecured obligations and rank pari passu with the Company’s existing and future unsecured, unsubordinated indebtedness, including the Company’s 7.50% Notes due 2027, 7.51% Series 2025A Senior Notes due 2028, 7.00% Notes due 2029, 7.25% Notes due 2031 and the SWK 2027 Notes (as defined below); senior to any of the Company’s future indebtedness that expressly provides it is subordinated to the Notes; effectively subordinated to all of the Company’s existing and future secured indebtedness (including indebtedness that is initially unsecured to which the Company subsequently grants security), to the extent of the value of the assets securing such indebtedness, including, without limitation, borrowings under the Company’s Credit Agreement with KeyBank National Association (the “Credit Facility”); and structurally subordinated to all existing and future indebtedness and other obligations of any of the Company’s existing or future subsidiaries, financing vehicles or similar facilities, including the Credit Facility.</div> The Notes may be redeemed in whole or in part at any time or from time to time at the Company’s option on or after October 1, 2028, upon not less than 30 days nor more than 60 days written notice by mail prior to the date fixed for redemption thereof, at a redemption price of $25 per Note plus accrued and unpaid interest payments otherwise payable for the then-current quarterly interest period accrued to, but not including, the date fixed for redemption.

46329125000000 The Notes will mature on October 1, 2031, unless previously redeemed or repurchased in accordance with their terms. The interest rate of the Notes is 7.75% per year and will be paid quarterly in arrears on March 1, June 1, September 1 and December 1 of each year, beginning on December 1, 2026. The Notes are the Company’s direct unsecured obligations and rank pari passu with the Company’s existing and future unsecured, unsubordinated indebtedness, including the Company’s 7.50% Notes due 2027, 7.51% Series 2025A Senior Notes due 2028, 7.00% Notes due 2029, 7.25% Notes due 2031 and the SWK 2027 Notes (as defined below); senior to any of the Company’s future indebtedness that expressly provides it is subordinated to the Notes; effectively subordinated to all of the Company’s existing and future secured indebtedness (including indebtedness that is initially unsecured to which the Company subsequently grants security), to the extent of the value of the assets securing such indebtedness, including, without limitation, borrowings under the Company’s Credit Agreement with KeyBank National Association (the “Credit Facility”); and structurally subordinated to all existing and future indebtedness and other obligations of any of the Company’s existing or future subsidiaries, financing vehicles or similar facilities, including the Credit Facility.