Main Street Capital adds Academy, SMBC Nikko as ATM sales agents; terminates B. Riley

Main Street Capital CORP

Added Academy Securities and SMBC Nikko as sales agents under ATM equity program effective Aug 11, 2026.
Terminated equity distribution agreement with B. Riley Securities effective Aug 11, 2026.
ATM program allows issuance of up to 20,000,000 shares of common stock; company has no obligation to sell.
Program uses existing shelf registration (Form N-2, File No. 333-285405) and March 4, 2025 prospectus supplement.

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