Bain Capital Specialty Finance, Inc.

Endnotes

(1)

Net investment income yields and net income returns are calculated on average net assets, or book value, for the respective periods shown.

(2)

Net debt-to-equity represents principal debt outstanding less cash and cash equivalents and unsettled trades, net of receivables and payables of investments.

(3)

The third quarter dividend is payable on September 29, 2026 to stockholders of record as of September 15, 2026.

(4)

The weighted average yield is computed as (a) the annual stated interest rate or yield earned on the relevant accruing debt and other income producing securities plus amortization of fees and discounts on the performing debt and other income producing investments, divided by (b) the total relevant investments at amortized cost or fair value. The weighted average yield does not represent the total return to our stockholders.

(5)

For non-stated rate income producing investments, computed based on (a) the dividend or interest income earned for the respective trailing twelve months ended on the measurement date, divided by (b) the ending amortized cost or fair value, as applicable. In instances where historical dividend or interest income data is not available or not representative for the trailing twelve months ended, the dividend or interest income is annualized.

Bain Capital Specialty Finance, Inc.

Conference Call Information

A conference call to discuss the Company’s financial results will be held live at 8:30 a.m. Eastern Time on August 11, 2026. Please visit BCSF’s webcast link located on the Events & Presentations page of the Investor Resources section of BCSF’s website at http://www.baincapitalspecialtyfinance.com for a slide presentation that complements the Earnings Conference Call.

Participants are also invited to access the conference call by dialing one of the following numbers:

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Domestic: 1-833-309-3473

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International: 1-785-838-9251

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Conference ID: BAIN

All participants will need to reference “Bain Capital Specialty Finance - Second Quarter Ended June 30, 2026 Earnings Conference Call” once connected with the operator. All participants are asked to dial in 10-15 minutes prior to the call.

Replay Information:

An archived replay will be available approximately three hours after the conference call concludes through August 25, 2026 via a webcast link located on the Investor Resources section of BCSF’s website, and via the dial-in numbers listed below:

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Domestic: 1-844-512-2921

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International: 1-412-317-6671

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Conference ID: 11162325

Bain Capital Specialty Finance, Inc.