Main Street Capital Corp 8-K

Summary

Preliminary Q3 2026 results. Distributable net investment income before taxes was in line with expectations and prior guidance; NAV per share increased for the 17th consecutive quarter.

Key Figures

• NAV per share: $34.18–$34.26 at 9/30/2026, up $0.26–$0.34 (0.8%–1.0%) from $33.92 at 6/30/2026, after the $0.30 supplemental dividend. The increase primarily reflected investment portfolio fair-value appreciation and accretive equity issuances, partly offset by dividends paid above NII per share and the net tax provision.
• Annualized return on equity: over 14%; investments on non-accrual were 0.9% of the portfolio at fair value and 3.5% at cost.
• Portfolio activity: $61.5M of LMM investments resulted in a $19.4M net decrease in portfolio cost basis; $162.0M of private loan investments resulted in a $1.8M net decrease. An affiliated SBIC’s borrowing capacity rose by $75.0M to $250.0M; together, the company’s SBIC funds have access to $425.0M of the $475.0M regulatory maximum.

Guidance

No guidance in this filing.

Investor Takeaways

• Final Q3 results, scheduled for 11/05/2026, will confirm whether quarter-end closing, valuation and third-party review procedures change these preliminary estimates; the conference call is scheduled for 11/06/2026.