UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 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): September 24, 2026

AEROVIRONMENT, INC.

(Exact name of registrant as specified in its charter)

Registrant’s telephone number, including area code: (703) 418-2828

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 (see General Instruction A.2. below):

¨    Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

¨    Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

¨    Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

¨    Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

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. Submission of Matters to a Vote of Security Holders.

On September 24, 2026, AeroVironment, Inc. (the “Company”) held its 2026 Annual Meeting of Stockholders (the “Annual Meeting”). Below is a brief description of each matter submitted to a vote at the Annual Meeting, as well as the final voting results with respect to each matter. For more information about these proposals, please refer to the Company’s 2026 Proxy Statement.

Proposal 1 — Election of Directors

The Company’s stockholders elected the five persons nominated by the Board of Directors as Class I and Class II directors for a one-year term as follows:

Each of the above directors shall serve for a term of one year, ending at the Company’s 2027 annual meeting of stockholders, and until his or her successor has been duly elected and qualified.

Proposal 2 — Ratification of Company’s Independent Auditors

The Audit Committee selected Deloitte & Touche LLP as the Company’s independent registered public accounting firm for the fiscal year ending April 30, 2027. The Company’s stockholders ratified the selection of Deloitte & Touche LLP as follows:

Proposal 3 — Advisory Vote on a Resolution Relating to the Compensation of the Company’s Named Executive Officers

The Company’s stockholders approved, by an advisory vote, a resolution relating to the compensation of the Company’s named executive officers, as disclosed in the proxy statement, by the following vote:

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 hereunto duly authorized.