EXHIBIT 99.1

Gladstone Capital Announces Monthly Cash Distributions for  January, February and March 2018

MCLEAN, Va., Jan. 09, 2018 (GLOBE NEWSWIRE) -- Gladstone Capital Corporation (NASDAQ:GLAD) (the “Company”) announced today that its board of directors declared the following monthly cash distributions for January, February and March 2018.

Cash Distributions:

Common Stock: $0.07 per share of common stock for each of January, February and March 2018, payable per the table below. The Company has paid 171 consecutive monthly cash distributions on its common stock. Prior to paying distributions on a monthly basis, the Company paid eight consecutive quarterly common stock cash distributions.

Term Preferred Stock: $0.125 per share of the Company’s 6.00% Series 2024 Term Preferred Stock (“Term Preferred Stock”) for each of January, February and March 2018, payable per the table below. The Term Preferred Stock trades on the NASDAQ under the symbol “GLADN.”

The Company offers a dividend reinvestment plan (the “DRIP”) to its common stockholders. For more information regarding the DRIP, please visit www.gladstonecapital.com.

Gladstone Capital Corporation is a publicly traded business development company that invests in debt and equity securities consisting primarily of secured first and second lien term loans to lower middle market businesses in the United States. Information on the business activities of all the Gladstone funds can be found at www.gladstonecompanies.com.

For Investor Relations inquiries related to any of the monthly dividend paying Gladstone funds, please visit www.gladstone.com.

Source: Gladstone Capital Corporation