MAIN STREET ANNOUNCES THIRD QUARTER 2026 RESULTS

Dwayne L. Hyzak, Chief Executive Officer of Main Street Capital Corporation

“We are pleased with our performance in the third quarter, which resulted in another quarter of strong operating results, including an annualized return on equity of 14.7%, distributable net investment income before taxes per share that was in line with our expectations and prior guidance provided on our last conference call and an increase in net asset value per share. We believe that these results continue to demonstrate the sustainable strength of our overall platform, the benefits of our differentiated and diversified investment strategies and the continued underlying strength and quality of our portfolio companies.”

Dwayne L. Hyzak, Chief Executive Officer of Main Street Capital Corporation

“Our strong third quarter results and continued positive outlook for the future resulted in the declaration of another $0.30 per share supplemental dividend to be paid in December 2026, representing our twenty-first consecutive quarterly supplemental dividend, to go with the 13 increases to our regular monthly dividends declared since the fourth quarter of 2021. Additionally, after several recent positive capital structure activities, we continue to maintain strong liquidity and a conservative leverage profile, which we believe is important in the current economic environment. We remain confident that our diversified lower middle market and private loan investment strategies, together with the benefits of our asset management business, cost efficient operating structure and conservative capital structure, will allow us to continue to deliver superior results for our shareholders.”