Exhibit 99.1 GREAT ELM CAPITAL CORP. ANNOUNCES FIRST QUARTER 2024 FINANCIAL RESULTS Company to Host Conference Call and Webcast at 5:00 PM ET Today PALM BEACH GARDENS, Florida, May 2, 2024 – Great Elm Capital Corp. (“we,” “our,” the “Company” or “GECC”) (NASDAQ: GECC), a business development company, today announced its financial results for the first quarter ended March 31, 2024. First Quarter and Other Recent Highlights: ▪ In February 2024, the Company raised $24 million of equity at Net Asset Value from ...