Company: MRCY
Filing Date: 2025-09-10
Form Type: DEF 14A
Source: 0001049521-25-000029
Chunk: 35

Company: MERCURY SYSTEMS INC
Filing Date: 2025-09-10
Form: DEF 14A
Chunk 35
---
| Vested(6)                              |     |                     |        — |
| Forfeited(7)                           |     |                     | -150,718 |
| Outstanding/Non-Vested as of 6/27/2025 |     |                     |  395,355 |

(1) The number of shares reflected in the table is based on the target number of shares underlying the performance-based awards. In the case of shares vested, the number of shares disclosed reflects the number of target shares that vested (up to 100% of the target shares). For further information regarding awards that vested above target, see Note 2 below. Awards vested exclude awards that have not fully vested by reason of an unsatisfied service condition, regardless of whether the performance periods of the awards have been completed.

(2) PSUs vested/earned in fiscal 2023 were tied to PSU awards granted in fiscal 2020 and achieved a 199.9% payout, resulting in the vesting of an additional 48,446 shares that are not reflected in the table.

(3) Represents PSUs forfeited due to terminations of employment during FY23.

(4) PSUs vested/earned in fiscal 2024 were tied to PSU awards granted in fiscal 2021 and achieved a 99.8% payout.

(5) Represents 27 PSUs forfeited due to below-target performance and 171,427 PSUs due to terminations of employment during FY24.

(6) PSUs vested/earned in fiscal 2025 were tied to PSU awards granted in fiscal 2022 and achieved a 0.0% payout.

(7) Represents 85,670 PSUs forfeited due to below-target performance and 65,048 PSUs due to terminations of employment.

#### Summary of the 2025 Plan
The following is a summary of the material terms of the 2025 Plan. This summary is subject to the specific provisions contained in the full text of the 2025 Plan, which is attached as Appendix A to this proxy statement.

Plan Administration. The Board, or if the Board elects, the Human Capital and Compensation Committee or another committee designated by the Board, has full power to select, from among the individuals eligible for awards, the individuals to whom awards will be granted, to make any combination of awards to participants, and to determine the specific terms and conditions of each award, subject to the provisions of the 2025 Plan. References in this Proposal 3 to the