Main Street Announces Completion of $150.0 Million Investment Grade Notes Offering

HOUSTON, April 9, 2026  /PRNewswire/ — Main Street Capital Corporation (NYSE: MAIN) („Main Street“) is pleased to announce the closing of a private notes offering totaling $150.0 million in aggregate principal amount (the „Notes“).  The Notes are unsecured and bear interest at a fixed rate of 6.93% per year, payable semiannually, mature on April 15, 2031 and may be redeemed in whole or in part at any time or from time to time at Main Street’s option at par plus accrued interest to the prepayment date and, if applicable, a make-whole premium.

Main Street intends to use the proceeds from this offering to repay outstanding indebtedness, including amounts outstanding under its corporate revolving credit facility and/or its special purpose vehicle revolving credit facility, to make investments in accordance with its investment objective and strategies, to make investments in marketable securities and idle funds investments, to pay operating expenses and other cash obligations and for general corporate purposes.

The Notes have not been and will not be registered under the Securities Act of 1933, as amended (the „Securities Act“), or any state securities laws and may not be offered or sold in the United States absent registration or an applicable exemption from the registration requirements of the Securities Act and applicable state securities laws. This news release shall not constitute an offer to sell or a solicitation of an offer to purchase the Notes or any other securities and shall not constitute an offer, solicitation or sale in any state or jurisdiction in which such an offer, solicitation or sale would be unlawful.