Ballhaus William L's Form 4 filing
Mercury Systems Inc (MRCY) · filed Aug 27, 2026
- Accession no.
- 0001049521-26-000063
- Filed
- Aug 27, 2026, 4:54 PM ET
- Trade date
- Aug 25-26, 2026
- Filing delay
- 2 days
- Rule 10b5-1 plan
- Not checked
This filing lists 6 non-derivative transactions and 2 derivative transactions. Open-market sales total $14.1M. It was filed 2 days after the trade.
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 |
|---|---|
| Ballhaus William LCIK 0001436044 | Director, Officer (Chairman, President & CEO) |
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 25, 2026 | Common Stock | MOption exerciseAcquired | +153,676 | $43.00 | +$6,608,068 | 453,512.325 | Direct | |
| Aug 25, 2026 | Common Stock | SSaleDisposed | −107,628 | $87.09F3 | −$9,373,214.89 | 345,884.325 | Direct | |
| Aug 25, 2026 | Common Stock | SSaleDisposed | −3,448 | $87.99F4 | −$303,399.86 | 342,436.325 | Direct | |
| Aug 26, 2026 | Common Stock | MOption exerciseAcquired | +68,476 | $43.00 | +$2,944,468 | 410,912.325 | Direct | |
| Aug 26, 2026 | Common Stock | SSaleDisposed | −38,276 | $88.91F5 | −$3,403,233.99 | 372,636.325 | Direct | |
| Aug 26, 2026 | Common Stock | SSaleDisposed | −10,814 | $89.74F6 | −$970,491.62 | 361,822.325 | Direct |
Derivative securities (Table II)
Options, warrants, restricted stock units and similar. Shares are the underlying shares; price and value are for the derivative itself, and the holding after is in derivative units.
| Trade date | Security | Transaction | Underlying shares | Unit price | Value | Held after | Ownership | Flags |
|---|---|---|---|---|---|---|---|---|
| Aug 25, 2026 | Common Stock | MOption exerciseDisposed | −153,676 | $0.00 | $0 | 68,476 | Direct | |
| Aug 26, 2026 | Common Stock | MOption exerciseDisposed | −68,476 | $0.00 | $0 | 0 | Direct |
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.
- F3
This transaction was executed in multiple trades at prices ranging from $86.800 to $87.800. The price reported above reflects the weighted average purchase price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.
Referenced by the price of 1 transaction in Table I.
- F4
This transaction was executed in multiple trades at prices ranging from $87.820 to $88.325. The price reported above reflects the weighted average purchase price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.
Referenced by the price of 1 transaction in Table I.
- F5
This transaction was executed in multiple trades at prices ranging from $88.500 to $89.435. The price reported above reflects the weighted average purchase price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.
Referenced by the price of 1 transaction in Table I.
- F6
This transaction was executed in multiple trades at prices ranging from $89.560 to $89.960. The price reported above reflects the weighted average purchase price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.
Referenced by the price of 1 transaction in Table I.