Main Street Capital Corporation to pay supplemental dividend in March

Main Street Capital Corporation (NYSE: MAIN) ("Main Street") is pleased to announce that its Board of Directors declared regular monthly cash dividends of $0.26 per share for each of April, May and June 2026. These monthly dividends, which will be payable pursuant to the table below, total $0.78 per share for the second quarter of 2026-

Summary of Second Quarter 2026 Regular Monthly Dividends

Declared	Ex-Dividend Date	Record Date	Payment Date	Amount Per Share
2/23/2026	4/8/2026	4/8/2026	4/15/2026	$0.26
2/23/2026	5/8/2026	5/8/2026	5/15/2026	$0.26
2/23/2026	6/8/2026	6/8/2026	6/15/2026	$0.26
		Total for Second Quarter 2026:		$0.78

In addition to the regular monthly dividends for the second quarter of 2026, the Board of Directors declared a supplemental cash dividend of $0.30 per share payable in March 2026. 

Supplemental Cash Dividend Payable in March 2026

Declared	Ex-Dividend Date	Record Date	Payment Date	Amount Per Share
2/23/2026	3/20/2026	3/20/2026	3/27/2026	$0.30