GECCO Great Elm Capital Corporation

Great Elm Capital Corp. (the “Company” or “GECC”) (NASDAQ: GECC) announced today the pricing of its underwritten public offering of $50,000,000 aggregate principal amount of its 5.875% notes due 2026 (the “Notes”), which will result in net proceeds to the Company of approximately $47,894,500 after payment of underwriting discounts and commissions and estimated offering expenses payable by the Company.

The Notes will mature on June 30, 2026, and may be redeemed in whole or in part at any time or from time to time at the Company’s option on or after June 30, 2023. The Company has also granted the underwriters a 30-day option to purchase up to an additional $7,500,000 aggregate principal amount of Notes to cover over-allotments, if any.

The closing of the transaction is subject to customary closing conditions, and the Notes are expected to be delivered on or about June 23, 2021. The Notes are expected to be listed on The Nasdaq Global Market under the trading symbol “GECCO,” and to trade thereon within 30 days from the original issue date.

The Company intends to use the net proceeds from the offering to redeem all of its outstanding 6.50% notes due 2022 and for general corporate purposes, which may include repayment of other indebtedness.

Oppenheimer & Co. Inc., B. Riley Securities, Inc., Janney Montgomery Scott LLC and Ladenburg Thalmann & Co. Inc. are acting as joint book-running managers for the offering.

This press release does not constitute an offer to sell or the solicitation of an offer to buy the securities in this offering or any other securities nor will there be any sale of these securities or any other securities referred to in this press release in any state or jurisdiction in which such offer, solicitation or sale would be unlawful prior to the registration or qualification under the securities laws of such state or jurisdiction.

A registration statement relating to these securities is on file with and has been declared effective by the Securities and Exchange Commission (the “SEC”). The offering will be made only by means of a prospectus, copies of which may be obtained, when available, from:

Oppenheimer & Co. Inc.85 Broad StreetNew York, New York 10004FixedIncomeProspectus@opco.com

Investors are advised to carefully consider the investment objectives, risks and charges and expenses of the Company before investing. The preliminary prospectus, dated June 15, 2021, which has been filed with the SEC, contains a description of these matters and other important information about the Company and should be read carefully before investing.

The information in this press release and the preliminary prospectus is not complete and may be changed.

About Great Elm Capital Corp.

Great Elm Capital Corp. is an externally managed, specialty finance company that seeks to generate current income and capital appreciation by investing in debt and income generating equity securities, including investments in specialty finance businesses. GECC elected to be regulated as a business development company under the Investment Company Act of 1940, as amended.

Cautionary Statement Regarding Forward-Looking Statements

Statements in this communication that are not historical facts are “forward-looking” statements within the meaning of the federal securities laws. These statements are often, but not always, made through the use of words or phrases such as “expect,” “anticipate,” “should,” “will,” “estimate,” “designed,” “seek,” “continue,” “upside,” “potential” and similar expressions. All such forward-looking statements involve estimates and assumptions that are subject to risks, uncertainties and other factors that could cause actual results to differ materially from the results expressed in the statements. Among the key factors that could cause actual results to differ materially from those projected in the forward-looking statements are: conditions in the credit markets, the price of GECC common stock, the performance of GECC’s portfolio and investment manager and risks associated with the economic impact of the COVID-19 pandemic on GECC and its portfolio companies. Information concerning these and other factors can be found in GECC’s registration statement, its Annual Report on Form 10-K and other reports filed with the U.S. Securities and Exchange Commission. GECC assumes no obligation to, and expressly disclaims any duty to, update any forward-looking statements contained in this communication or to conform prior statements to actual results or revised expectations except as required by law. Readers are cautioned not to place undue reliance on these forward-looking statements that speak only as of the date hereof.Media & Investor Contact:

Investor Relations+1 (617) 375-3006investorrelations@greatelmcap.com

Adam PriorThe Equity Group Inc.+1 (212) 836-9606aprior@equityny.com