Exhibit 99.1

	NEWS RELEASE
	Contacts: Main Street Capital Corporation Dwayne L. Hyzak, CEO, dhyzak@mainstcapital.com Ryan R Nelson, CFO, rnelson@mainstcapital.com 713-350-6000 Dennard Lascar Investor Relations Ken Dennard / ken@dennardlascar.com Zach Vaughan / zvaughan@dennardlascar.com 713-529-6600

Main Street Announces

Amendment of its SPV Credit Facility

Total Commitments Increased to $600.0 Million

Final Maturity of the Facility Extended to September 2029

HOUSTON – October 1, 2024 – Main Street Capital Corporation (NYSE: MAIN) (“Main Street”) is

pleased to announce that its wholly-owned subsidiary, MSCC Funding I, LLC (“MSCC Funding”),

recently amended its special purpose vehicle revolving credit facility (the “SPV Facility”). The

recently closed amendment provides an increase in total commitments from $430.0 million to $600.0

million, while maintaining an expanded accordion feature that allows for an increase up to $800.0

million of total commitments from new and existing lenders on the same terms and conditions as the

existing commitments. The amendment also extends the revolving period, or reinvestment period,

through September 2027 and the final maturity date to September 2029. The amendment also

decreases the interest rate during the revolving period to one-month Term SOFR (“SOFR”) plus

2.35% (from the prior interest rate of SOFR plus 2.50% plus a 0.10% credit spread adjustment, or

SOFR plus 2.60% in total) and during the first and second years after the revolving period to SOFR

plus 2.475% and 2.60%, respectively (from the prior interest rate of SOFR plus 2.625% and 2.75%,

respectively).

ABOUT MAIN STREET CAPITAL CORPORATION

Main Street (www.mainstcapital.com) is a principal investment firm that primarily provides long-term

debt and equity capital to lower middle market companies and debt capital to middle market

companies. Main Street’s portfolio investments are typically made to support management buyouts,

recapitalizations, growth financings, refinancings and acquisitions of companies that operate in diverse

industry sectors. Main Street seeks to partner with entrepreneurs, business owners and management

teams and generally provides “one stop” financing alternatives within its lower middle market

investment strategy. Main Street’s lower middle market portfolio companies generally have annual

revenues between $10 million and $150 million. Main Street’s middle market portfolio companies are

generally larger in size than its lower middle market portfolio companies.

Main Street, through its wholly owned portfolio company MSC Adviser I, LLC (“MSC Adviser”),

also maintains an asset management business through which it manages investments for external

parties. MSC Adviser is registered as an investment adviser under the Investment Advisers Act of

1940, as amended.

FORWARD-LOOKING STATEMENTS

This press release contains certain forward-looking statements, including but not limited to the

availability of future financing capacity under its credit facilities, which are based upon Main Street

management’s current expectations and are inherently uncertain. Any such statements other than

statements of historical fact are likely to be affected by other unknowable future events and conditions,

including elements of the future that are or are not under Main Street’s control, and that Main Street

may or may not have considered; accordingly, such statements cannot be guarantees or assurances of

any aspect of future performance. Actual performance, events and results could vary materially from

these estimates and projections of the future as a result of a number of factors, including those

described from time to time in Main Street’s filings with the Securities and Exchange Commission.

Such statements speak only as of the time when made and are based on information available to Main

Street as of the date hereof and are qualified in their entirety by this cautionary statement. Main Street

assumes no obligation to revise or update any such statement now or in the future.

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