TABLE OF CONTENTS UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2020 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission file number: 814-01175 BAIN CAPITAL SPECIALTY FINANCE, INC. (Exact Name of Registrant as Specified in its Charter) Delaware (State or Other Jurisdiction of Incorpora ...

Bain Capital Specialty Finance, Inc. (NYSE:BCSF) Q3 2020 Earnings Conference Call November 6, 2020 8:30 AM ET Company Participants Katherine Schneider – Investor Relations Michael Ewald – President and Chief Executive Officer Mike Boyle – Vice President and Treasurer Sally Dornaus – Chief Financial Officer Conference Call Participants Finian O’Shea – Wells Fargo Securities Ryan Lynch – KBW Derek Hewett – Bank of America Operator Good morning, and welcome to the Bain Capital Specialty Finance Third Quarter 2 ...

Bain Capital Specialty Finance, Inc. (NYSE:BCSF) Q2 2020 Earnings Conference Call August 6, 2020 8:00 AM ET Company Participants Katherine Schneider - IR Michael Ewald - President, CEO & Director Michael Boyle - VP & Treasurer Sally Dornaus - CFO Conference Call Participants Finian O'Shea - Wells Fargo Securities Ryan Lynch - KBW Derek Hewett - Bank of America Merrill Lynch Operator Good morning, and welcome to the Bain Capital Specialty Finance Second Quarter 2020 Earnings Conference Call. [Operator Instru ...

Bain Capital Specialty Finance, Inc. (NYSE:BCSF) Q1 2020 Earnings Conference Call May 7, 2020 8:30 AM ET Company Participants Katherine Schneider – Investor Relations Michael Ewald – President and Chief Executive Officer Mike Boyle – Vice President and Treasurer Sally Dornaus – Chief Financial Officer Conference Call Participants Chris York – JMP Securities Arren Cyganovich – Citi Operator Greetings. Welcome to the Bain Capital Specialty Finance First Quarter 2020 Earnings Conference Call. [Operator Instruc ...

Bain Capital Specialty Finance, Inc. (NYSE:BCSF) Q4 2019 Earnings Conference Call February 27, 2020 8:30 AM ET Company Participants Kyle Nagarkar - Investor Relations Michael Ewald - President and Chief Executive Officer Sally Dornaus - Chief Financial Officer Mike Boyle - Vice President and Treasurer Conference Call Participants Fin O'Shea - Wells Fargo Securities Ryan Lynch - KBW Derek Hewett - Bank of America Operator Greetings. Welcome to the Bain Capital Specialty Finance Fourth Quarter 2019 Earnings C ...

Use these links to rapidly review the document TABLE OF CONTENTS INDEX TO CONSOLIDATED FINANCIAL STATEMENTS Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ý ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2019 OR o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission file number: 814-01175 | --- | --- | |------------------- ...