Changes in Beneficial Ownership · 4
Mercury Systems Inc
MRCYNASDAQEQUITYCurrent
Changes in Beneficial Ownership
Structured filing — 4
form4.xml
Filing details
- Report period
- 2026-08-25
- Issuer
- MERCURY SYSTEMS INC
- Issuer CIK
- 0001049521
- Trading symbol
- MRCY
Reporting owner 1
- Name
- Ballhaus William L
- Reporting owner CIK
- 0001436044
- Relationship
- Director · Officer
- Officer title
- Chairman, President & CEO
- Address
- 50 MINUTEMAN ROAD, ANDOVER, MA, 01810
Non-derivative transactions
| Security | Transaction date | Code | Amount | A / D | Price (USD) | Owned after | Ownership |
|---|---|---|---|---|---|---|---|
| Common Stock | 2026-08-25 | M · Form 4 | 153,676[F1] | A | 43.00 | 453,512.325 | D |
| Common Stock | 2026-08-25 | S · Form 4 | 107,628[F2] | D | 87.089[F3] | 345,884.325 | D |
| Common Stock | 2026-08-25 | S · Form 4 | 3,448[F2] | D | 87.993[F4] | 342,436.325 | D |
| Common Stock | 2026-08-26 | M · Form 4 | 68,476[F1] | A | 43.00 | 410,912.325 | D |
| Common Stock | 2026-08-26 | S · Form 4 | 38,276[F2] | D | 88.913[F5] | 372,636.325 | D |
| Common Stock | 2026-08-26 | S · Form 4 | 10,814[F2] | D | 89.744[F6] | 361,822.325 | D |
Table key
- M · Form 4
- Exempt derivative exercise or conversion under Rule 16b-3
- A
- Acquired
- D
- Direct
- S · Form 4
- Sale on the market or privately
Non-derivative holdings
| Security | Amount owned | Ownership | Nature of ownership |
|---|---|---|---|
| Common Stock | 1,403 | I | 401K Plan |
| Common Stock | 7,066.173 | I | By Milestone Road Holdings, LLC |
Table key
- I
- Indirect
Derivative transactions
| Security | Conversion / exercise price (USD) | Transaction date | Code | Amount | A / D | Price (USD) | Exercisable | Expires | Underlying security | Underlying shares | Owned after | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Employee Stock Option (Right to Buy) | 43.00 | 2026-08-25 | M · Form 4 | 153,676[F1] | D | 0 | 2026-08-17 | 2027-08-17 | Common Stock | 153,676 | 68,476 | D |
| Employee Stock Option (Right to Buy) | 43.00 | 2026-08-26 | M · Form 4 | 68,476[F1] | D | 0 | 2026-08-17 | 2027-08-17 | Common Stock | 68,476 | 0 | D |
Table key
- M · Form 4
- Exempt derivative exercise or conversion under Rule 16b-3
- D
- Direct
Footnotes
- F1
- Represents the exercise of a stock option award scheduled to expire on August 17, 2027.↩ 1↩ 2↩ 3↩ 4
- F2
- Represents the sale of shares intended solely to cover the exercise price, applicable withholding taxes and related transaction costs of stock options exercised on the same date.↩ 1↩ 2↩ 3↩ 4
- 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.↩ 1
- 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.↩ 1
- 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.↩ 1
- 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.↩ 1
Signature 1
- Signed
- /s/ Douglas Munro, attorney-in-fact
- Date
- 2026-08-27
Recent company filings
- 10-Q filingNov 10, 2026
- Results of Operations and Financial Condition · Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory ArrangementsNov 10, 2026
- Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements · Submission of Matters to a Vote of Security Holders · Other EventsNov 3, 2026
- 144 filingSep 21, 2026
- Other EventsSep 18, 2026