X0306 4 2020-06-16 0 0001655050 Bain Capital Specialty Finance, Inc. BCSF 0001309111 BAIN CAPITAL CREDIT MEMBER, LLC C/O BAIN CAPITAL CREDIT, LP 200 CLARENDON STREET BOSTON MA 02116 0 0 1 0 0001651587 Bain Capital Distressed & Special Situations 2016 (F), L.P. C/O BAIN CAPITAL CREDIT, LP BOSTON MA 02116 0 0 1 0 Common Stock 2020-06-16 4 J 0 952118.00 10.22 A 11822432.67 I See Footnotes Reflects additional shares of Common Stock acquired by Bain Capital Distressed and Special Situations 2016 (F), L.P. ("F Holdings") and Bain Capital Credit Holdings (MRF), L.P. ("MRF Holdings") in connection with the Issuer's rights offering pursuant to the over-subscription privilege. Following the transactions described herein, shares of Common Stock are directly held by the following entities: (a) 9,914,820.48 by F Holdings, whose general partner is Bain Capital Distressed and Special Situations 2016 Investors (F), L.P. ("F Holdings GP"), and (b) 1,907,612.19 by MRF Holdings and together with F Holdings, the "Funds"), whose general partner is Bain Capital Credit Holdings Investors (MRF), LP ("MRF Holdings GP"). Bain Capital Credit Member, LLC ("BCCM") is the general partner of F Holdings GP and MRF Holdings GP. BCCM may be deemed to share beneficial ownership of all 11,822,432.67 shares of Common Stock held of record by the Funds, but disclaims beneficial ownership of such shares, except to the extent of its respective pecuniary interest therein. /s/ Bain Capital Credit Member, LLC 2020-06-17 /s/ Bain Capital Distressed and Special Situations 2016 (F), L.P. 2020-06-17