Main Street Capital Corp 8-K

Summary

Preliminary Q4 and FY2025 operating results. Main Street estimated Q4 net investment income of $1.01–$1.05 per share and NAV of $33.29–$33.37 per share, with NAV gains driven primarily by portfolio fair-value increases. The estimates remain subject to year-end review and audit and could change materially; final results are scheduled for 2/26/2026.

Key Figures

• Estimated return on equity was over 17% for Q4 on an annualized basis and for FY2025. Non-accrual investments were 1.0% of the portfolio at fair value and 3.3% at cost as of 12/31/2025.
• Q4 investment activity included $300.0M of lower middle market investments, increasing that portfolio’s cost basis by $253.1M net, and $231.4M of private loan investments, increasing that portfolio’s cost basis by $108.8M net. FY2025 gross lower middle market investments were a record ≈$700M.
• 2025 dividends totaled $4.23 per share; approximately 8% was taxed as qualified dividends and 92% as ordinary income. Approximately 47% related to interest-related dividends and short-term capital gains for non-U.S. shareholders.

Guidance

No guidance in this filing.

Investor Takeaways

• Compare final Q4 and FY2025 results, including year-end portfolio valuations and per-share income, with the preliminary estimates when released on 2/26/2026.