8-K

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, DC 20549

FORM 8-K

CURRENT

REPORT

Pursuant to Section 13 or 15(d) of the

Securities Exchange Act of 1934

Date of Report (Date of earliest event reported):April 18, 2024

INNOVATIVE SOLUTIONS AND SUPPORT, INC.

(Exact name of registrant as specified in its charter)

720 Pennsylvania Drive

Exton, Pennsylvania 19341

(Address of principal executive offices) (Zip Code)

(610) 646-9800

(Registrant’s telephone number, including area code)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

Securities registered pursuant to Section 12(b) of the Act:

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§ 230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§ 240.12b-2 of this chapter).

Emerging growth company ¨

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ¨

Item 5.07          Submissionof Matters to a Vote of Security Holders.

On April 18, 2024, Innovative Solutions and Support, Inc. (the “Company”) held its annual meeting of shareholders (the “Annual Meeting”).

Present at the Annual Meeting in person or by proxy were holders of 15,066,135 shares of common stock of the Company, representing 86.28% of the shares of common stock of the Company issued and outstanding and entitled to vote as of the close of business on February 20, 2024, the record date for the Annual Meeting, and constituting a quorum for the transaction of business.

The shareholders of the Company voted on the following proposals at the Annual Meeting:

Proposal 1: Election of Directors

Each of the above listed director nominees was duly elected to serve until the 2025 annual meeting of shareholders and until his successor is duly elected and qualified.

Proposal 2: Approval of the Innovative Solutions and Support, Inc.Amended and Restated 2019 Stock-Based Incentive Compensation Plan

The Company’s shareholders approved the adoption of the Innovative Solutions and Support, Inc. Amended and Restated 2019 Stock-Based Incentive Compensation Plan.

Proposal 3*: Ratification of Appointmentof Independent Registered Public Accounting Firm*

The Company’s shareholders ratified the appointment of Grant Thornton LLP as the Company’s independent registered public accounting firm for the fiscal year ending September 30, 2024.

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.