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): October 22, 2025

Mercury Systems, Inc.

(Exact Name of Registrant as Specified in its Charter)

Massachusetts

001-41194

04-2741391

(State or Other Jurisdiction

of Incorporation)

(Commission File Number)

(IRS Employer

Identification No.)

50 Minuteman Road,

Andover,

Massachusetts

01810

(Address of Principal Executive Offices)

(Zip Code)

Registrant’s telephone number, including area code: (978) 256-1300

Not Applicable

(Former Name or Former Address, if Changed Since Last Report)

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))

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. ☐

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


Title of each class	Trading Symbol(s)	Name of each exchange on which registered
Common Stock, par value $0.01	MRCY	Nasdaq Global Select Market

Item 5.02 Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.

At the Company’s Annual Meeting of Shareholders held on October 22, 2025 (the “2025 Annual Meeting”), William L. Ballhaus, Lisa S. Disbrow, and Howard L. Lance were elected as Class I Directors for a three-year term ending in 2028. Jean Bua was initially elected to the Board in January 2025 as a Class II Director. Pursuant to our Board Policy, a director elected to the Board other than at an Annual Meeting of Shareholders, or a Special Meeting in lieu of an Annual Meeting, is subject to re-election at the next Annual Meeting. At the 2025 Annual Meeting, Ms. Bua was elected as a Class II Director for a one-year term ending in 2026, at which time all the Class II Directors will be up for re-election for a three-year term.

Item 5.07 Submission of Matters to a Vote of Security Holders.

The final voting results for the 2025 Annual Meeting are as follows:

1. To elect three Class I Directors nominated by the Board of Directors, each to serve for a three-year term, and in each case until their successors have been duly elected and qualified, and to elect one Class II Director nominated by the Board of Directors, to serve for a one-year term, until her successor has been duly elected and qualified:


Director Nominee	For	Withheld	Non-Votes	Uncast
William L. Ballhaus, Class I Director	53,285,066	1,649,243	2,109,616	0
Lisa S. Disbrow, Class I Director	52,803,960	2,130,349	2,109,616	0
Howard L. Lance, Class I Director	51,139,933	3,794,376	2,109,616	0
Jean Bua, Class II Director	54,137,080	797,229	2,109,616	0

2. To approve, on an advisory basis, the compensation of the Company’s named executive officers:


For:			52,430,029
Against:			2,468,655
Abstain:			35,625
Non-Votes:			2,109,616
Uncast			0

3. To approve the Company’s 2025 Long Term Incentive Plan:


For:			45,628,561
Against:			9,229,049
Abstain:			76,699
Non-Votes:			2,109,616
Uncast			0

4. To ratify the appointment of KPMG LLP as the Company’s independent registered public accounting firm for fiscal 2026:


For:			56,369,114
Against:			626,733
Abstain:			48,078
Non-Votes:			0
Uncast			0

Item 8.01 Other Events.

On October 22, 2025, in connection with the 2025 Annual Meeting, the Company’s Board of Directors held a meeting at which it elected William L. Ballhaus as Chairman of the Board, Barry R. Nearhos as Lead Independent Director, and determined the composition of the Board committees for the upcoming year. The committees of the Board will be constituted as follows:

Audit Committee: Barry R. Nearhos, Chair; Jean Bua; Lisa S. Disbrow; and Debora A. Plunkett

Government Relations Committee: Lisa S. Disbrow, Chair; Jean Bua; Gerard J. DeMuro; and Debora A. Plunkett

Human Capital and Compensation Committee: Howard L. Lance, Chair; Orlando P. Carvalho; Lisa S. Disbrow; and Scott Ostfeld

M&A and Finance Committee: Orlando P. Carvalho, Chair; Gerard J. DeMuro; Howard L. Lance; and Scott Ostfeld

Nominating and Governance Committee: Barry R. Nearhos, Chair; Orlando P. Carvalho; Howard L. Lance; and Debora A. Plunkett

SIGNATURES

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.

Dated: October 28, 2025

MERCURY SYSTEMS, INC.

By:

/s/ Stuart H. Kupinsky

Stuart H. Kupinsky

Executive Vice President, Chief Legal Officer, and Corporate Secretary

MERCURY SYSTEMS INC 8-K