Dividend increase #42 of 2023 : Main Street Capital Corporation

Main Street Capital Corporation (NYSE: MAIN) ("Main Street") is pleased to announce that its Board of Directors declared regular monthly cash dividends of $0.24 per share for each of January, February and March 2024.  These monthly dividends, which will be payable pursuant to the table below, total $0.72 per share for the first quarter of 2024 and represent a 2.1% increase from the regular monthly dividends declared for the fourth quarter of 2023 and a 6.7% increase from the regular monthly dividends paid in the first quarter of 2023. 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 First Quarter 2024 Regular Monthly Dividends

Declared	Ex-Dividend Date	Record Date	Payment Date	Amount Per Share
10/31/2023	1/4/2024	1/5/2024	1/12/2024	$0.24
10/31/2023	2/7/2024	2/8/2024	2/15/2024	$0.24
10/31/2023	3/7/2024	3/8/2024	3/15/2024	$0.24
		Total for First Quarter 2024:		$0.72

In addition to the regular monthly dividends for the first quarter of 2024, the Board of Directors declared a supplemental cash dividend of $0.275 per share payable in December 2023. 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 September 30, 2023.

Supplemental Cash Dividend Payable in December 2023

Declared	Ex-Dividend Date	Record Date	Payment Date	Amount Per Share
10/31/2023	12/19/2023	12/20/2023	12/27/2023	$0.275