Exhibit 99.1 Innovative Solutions & Support, Inc. Announces Second Quarter Fiscal 2024 Financial Results EXTON, Pa. – May 13, 2024 – (BUSINESS WIRE) Innovative Solutions & Support, Inc. (“IS&S” or the “Company”) (NASDAQ: ISSC) today announced its financial results for the second quarter of fiscal 2024, which ended March 31, 2024. For the second quarter of fiscal 2024, IS&S reported net sales of $10.7 million, up 46$7.3 million in the second quarter a year ago. The Company reported net income of $1.2 ...