Main Street Capital 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 $0.215 per share for each of April, May and June 2022.  These monthly dividends, which will be payable pursuant to the table below, total $0.645 per share for the second quarter of 2022, represent a 4.9% increase from the regular monthly dividends paid for the second quarter of 2021 and are consistent with the regular monthly dividends declared for the first quarter of 2022. Since its October 2007 initial public offering, Main Street has periodically increased the amount of its regular monthly dividends paid per share and has never reduced its regular monthly dividend amount per share.

Summary of Second Quarter 2022 Regular Monthly Dividends

Declared	Ex-Dividend Date	Record Date	Payment Date	Amount Per Share
2/23/2022 2/23/2022 2/23/2022	4/1/2022 5/2/2022 6/1/2022	4/4/2022 5/3/2022 6/2/2022	4/14/2022 5/13/2022 6/15/2022	$0.215 $0.215 $0.215
		Total for Second Quarter 2022:		$0.645

In addition to the regular monthly dividends for the second quarter of 2022, the Board of Directors declared a supplemental cash dividend of $0.075 per share payable in March 2022. This supplemental cash dividend, which will be payable as set forth in the table below, will be paid out of Main Street's undistributed taxable income (taxable income in excess of dividends paid) as of December 31, 2021. Including all dividends declared to date, including the second quarter 2022 regular monthly dividend and the first quarter 2022 supplemental dividend, Main Street will have paid $33.54 per share in cumulative cash dividends since its October 2007 initial public offering at $15.00 per share. 

Supplemental Cash Dividend Payable in March 2022

Declared	Ex-Dividend Date	Record Date	Payment Date	Amount Per Share
2/23/2022	3/21/2022	3/22/2022	3/30/2022	$0.075