Company: MRCY
Filing Date: 2025-09-10
Form Type: DEF 14A
Source: 0001049521-25-000029
Chunk: 7

Company: MERCURY SYSTEMS INC
Filing Date: 2025-09-10
Form: DEF 14A
Chunk 7
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#### Why am I receiving these materials?
We are mailing this notice and proxy card to you on or about September 10, 2025 in connection with the solicitation of proxies by the Board of Directors of Mercury Systems, Inc. ("Mercury") for the 2025 Annual Meeting of Shareholders to be held on October 22, 2025, and any adjournment or postponement of that meeting. The meeting will be held on October 22, 2025, beginning at 10:00 a.m. Eastern Time at our headquarters at 50 Minuteman Road, Andover, Massachusetts 01810. You are invited to attend the meeting, and we request that you vote on the proposals described in this proxy statement. You do not need to attend the meeting to vote your shares. You may vote by internet, telephone, or mail in order to have your shares voted at the meeting on your behalf.

#### What am I voting on?
There are four matters scheduled for a vote:

• election of 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 are duly elected and qualified, and the election of one Class II director nominated by the Board of Directors to serve for a one-year term and until her successor is duly elected and qualified;

• an advisory vote on the fiscal 2025 compensation of our named executive officers (the "say-on-pay" vote);

• approval of our new 2025 Long Term Incentive Plan; and

• ratification of the appointment of KPMG LLP as our independent registered public accounting firm for fiscal 2026.

#### Who can attend and vote at the meeting?
Shareholders of record at the close of business on August 25, 2025, the record date, are entitled to attend and vote at the meeting. Each share of our common stock is entitled to one vote on all matters to be voted on at the meeting, and can be voted only if the record owner is present to vote or is represented by proxy. The proxy card provided with this proxy statement indicates the number of shares of common stock that you own and are entitled to vote at the meeting.

What is the Admission Policy for the Annual Meeting?

All holders of Mercury shares as of the record date are encouraged to attend the Annual Meeting. In order to ensure the safety of all attendees, we have implemented the following security and admission policies.

• Eligible Attendees. Attendance is limited to registered and beneficial Mercury shareholders