Munro Douglas's Form 4/A amendment
AmendedMercury Systems Inc (MRCY) · filed Sep 15, 2026
- Accession no.
- 0001049521-26-000071
- Filed
- Sep 15, 2026, 6:10 PM ET
- Trade date
- Aug 17, 2026
- Filing delay
- 29 days
- Rule 10b5-1 plan
- Not checked
- Original filed
- Aug 19, 2026
This filing lists 1 non-derivative transaction. It carries over 2 transactions from the original filing that it did not restate. Open-market sales total $99.4K. It was filed 29 days after the trade.
This amendment restates part of 0001049521-26-000054 (filed Aug 19, 2026). The transactions it did not restate still count and are listed below.
Reporting owners
A Form 4 can have several reporting owners, such as a person and a fund they control. Trade tables show the first one.
| Owner | Relationship to the company |
|---|---|
| Munro DouglasCIK 0002011703 | Officer (SVP, CAO) |
Non-derivative securities (Table I)
Acquisitions and disposals of common stock and similar shares, one row per line on the filing.
| Trade date | Security | Transaction | Shares | Price | Value | Shares after | Ownership | Flags |
|---|---|---|---|---|---|---|---|---|
| Aug 17, 2026 | Common Stock | AGrant or awardAcquired | +2,882 | $0.00 | $0 | 17,015 | Direct |
Carried over from the original filing
This amendment restates only part of the original filing. The original's other transactions still stand, and the trade tables on Livermore count them under this amendment.
From 0001049521-26-000054 (filed Aug 19, 2026).
Non-derivative securities (Table I)
Footnotes on the original
The footnotes that the prices of these transactions refer to on the original filing.
- F2
Represents the per share price attributed to sales of shares on behalf of all participants under the sell-to-cover program on the transaction date indicated.
Referenced by the price of 2 transactions in Table I.
Footnotes and remarks
Livermore keeps the footnotes that transaction prices refer to, all footnotes of amendments (Form 4/A) and the filing's remarks. Other footnotes, such as how indirect holdings are held or the details of a trading plan, are only in the original on SEC EDGAR.
- F1
Represents 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.