Harborne Christopher → INNOVATIVE SOLUTIONS & SUPPORT INC ISSC

Item 4 is hereby amended and supplemented to include the following information: The Reporting Persons expect to continue to review their investment in the Company in light of a variety of factors, including, without limitation, current and anticipated future trading prices for the Shares, the financial condition, results of operations and prospects of the Company, alternative investment opportunities, general economic, financial market and industry conditions and other factors that the Reporting Persons may deem material to their investment decisions. Based on the foregoing, the Reporting Persons may determine to sell, or otherwise dispose of, all or some of the Shares beneficially owned by the Reporting Persons, or to purchase or otherwise acquire additional Shares, in the open market or in private transactions.