Main Street Announces New Portfolio Investment

HOUSTON, Feb. 28, 2018 /PRNewswire/ -- Main Street Capital Corporation (NYSE: MAIN) ("Main Street") is pleased to announce that it recently made a new portfolio investment to facilitate the recapitalization of Chamberlin Holding LLC, d.b.a. Chamberlin Roofing & Waterproofing ("Chamberlin" or the "Company"), a leading commercial roofing and waterproofing specialty contractor. Main Street, along with a co-investor, partnered with the Company's CEO, John M. Kafka, and senior management team to facilitate the transaction, with Main Street funding $33.0 million in a combination of first-lien, senior secured term debt and a direct equity investment. In addition, Main Street and its co-investor are providing Chamberlin an undrawn credit facility to support its future growth initiatives and working capital needs.

Founded in 1897, and now headquartered in Houston, Texas, Chamberlin is a market leading commercial specialty contractor with a focus on installing high quality roofing and waterproofing systems, as well as providing roof maintenance and leak repair services throughout the Southwest, Southeast, and Midwest regions of the United States, with a focus on Texas and Oklahoma. Chamberlin provides its services to a variety of end markets, including Office, Educational, Healthcare, Multi-family, Governmental, Religious, Retail, Aviation, Parking Garages and Hospitality / Entertainment venues. Outside of the Company's Houston headquarters, Chamberlin has offices in Dallas, Austin, San Antonio and Oklahoma.

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 portfolio. Main Street's lower middle market companies generally have annual revenues between $10 million and $150 million. Main Street's middle market debt investments are made in businesses that are generally larger in size than its lower middle market portfolio companies.

Main Street's common stock trades on the New York Stock Exchange ("NYSE") under the symbol "MAIN." In addition, Main Street has outstanding 6.125% Notes due 2023, which trade on the NYSE under the symbol "MSCA."

Contacts:
Main Street Capital Corporation
Dwayne L. Hyzak, President & COO, dhyzak@mainstcapital.com
Brent D. Smith, CFO, bsmith@mainstcapital.com
713-350-6000

Dennard Lascar Investor Relations
Ken Dennard | ken@dennardlascar.com
Mark Roberson | mroberson@dennardlascar.com
713-529-6600

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