SEC Form 4/A · accession 0001049521-26-000067
MERCURY SYSTEMS INC · MRCY
Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗
This is an amendment (Form 4/A). It replaces an earlier filing for the same period.
Reporting owner
William L Ballhaus
Officer — Chairman, President & CEO · Director
Period of report
Aug 17, 2026
Accepted (ET)
Sep 15, 2026 · 6:06 pm EDT
Rule 10b5-1 plan
box not checked
Issuer CIK
0001049521
Table I — non-derivative securities
| Security | Date | Code | Shares | Price | A/D | Owned after | D/I | Nature of ownership |
|---|---|---|---|---|---|---|---|---|
| Common StockF1 | Aug 17, 2026 | A | 23,629 | $0.00 | A | 324,782 | D | |
| Common Stock | holding | — | — | — | 1,403 | I | 401K Plan | |
| Common Stock | holding | — | — | — | 7,066 | I | By Milestone Road Holdings, LLC |
Table II — derivative securities
No Table II lines on this filing.
Explanation of responses
- F1Represents restricted stock units that vest in equal annual increments over the three-year period following the grant date.
Remarks
This amendment is being filed to correct the inadvertent omission of the grant of restricted stock units to the reporting person on August 17, 2026.