Exhibit 99.1 8333 Douglas Avenue, Suite 1100 Dallas, Texas 75225 T 214.238.5700 F 214.238.5701 Capital Southwest Announces Financial Results for Fourth Fiscal Quarter and Fiscal Year Ended March 31, 2024 and Announces Total Dividends of $0.63 per share for the Quarter Ending June 30, 2024 CSWC Reports Pre-Tax Net Investment Income of$0.68 Per Share for Quarter Ended March 31, 2024 Dallas, Texas – May 14, 2024 – Capital Southwest Corporation (“Capital Southwest,” “CSWC” or the “Company”) (Nasdaq: CSWC), an ...