X0306 4 2020-06-05 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 2020-06-05 4 X 0 2174062.00 10.22 A 10870314.67 I See Footnotes Subscription Rights 10.22 2020-06-05 4 X 0 8696252.00 0.00 D 2020-05-13 2020-06-05 Common Stock 2174062.00 0 I See Footnotes On June 5, 2020, Bain Capital Distressed and Special Situations 2016 (F), L.P. ("F Holdings") and Bain Capital Credit Holdings (MRF), L.P. ("MRF Holdings") each exercised in full its primary subscription rights (every 4 subscription rights entitling it to purchase 1 share of Common Stock), which were issued to holders of Common Stock on the May 13, 2020 record date for the rights offering. Pursuant to the rights offering, each of F Holdings and MRF Holdings has also exercised its over-subscription privilege and may acquire additional shares of Common Stock pursuant thereto. Any such additional shares (once determined) will be reported on a subsequent Form 4. Following the transactions described herein, shares of Common Stock are directly held by the following entities: (a) 9,116,331.48 by F Holdings, whose general partner is Bain Capital Distressed and Special Situations 2016 Investors (F), L.P. ("F Holdings GP"), and (b) 1,753,983,19 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 10,870,314.67 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 2020-06-08 /s/ Bain Capital Distressed and Special Situations 2016 (F), L.P. 2020-06-08