Exhibit 99.1 NEWS RELEASE 14 Lafayette Square, Suite 1405 ● Buffalo, New York 14203 FOR IMMEDIATE RELEASE Rand Capital Reports 27% Increase in Total Investment Income for 2023 ● Portfolio expansion centered on debt investments drives total investment income growth of 11% to $1.9 million for the fourth quarter and 27% to $7.3 million for full year 2023 ● Rand’s portfolio was comprised of 64% interest yielding debt instruments at year-end compared with 56% at the end of 2022, which improved the portfolio yiel ...