William L. Ballhaus - 18 Aug 2025 Form 4 Insider Report for MERCURY SYSTEMS INC (MRCY)

Reporting relationship: Chairman, President & CEO, Director
Issuer ticker: MRCY
Reported as of: 18 Aug 2025
Net transaction value: -$1,532,692
SEC form: 4
Accepted by SEC: 20 Aug 2025, 17:11:36 UTC
Prior SEC filing: 19 Aug 2025
Source filing: View source filing
Reporting owner signature: /s/ Douglas Munro, attorney-in-fact

Key filing fact

William L. Ballhaus filed Form 4 for MERCURY SYSTEMS INC (MRCY) on 20 Aug 2025.

Key facts

This page summarizes William L. Ballhaus's Form 4 filing for MERCURY SYSTEMS INC (MRCY).
2 reported transactions and 0 derivative rows are listed below.
Accepted by SEC: 20 Aug 2025, 17:11.

Change

Previous filing in this sequence was filed on 19 Aug 2025.
Current net transaction value: -$1,532,692.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001436044 Primary reporting owner

Ballhaus William L

Relationship: Chairman, President & CEO, Director
Address: 50 MINUTEMAN ROAD, ANDOVER
Signature: /s/ Douglas Munro, attorney-in-fact
Signature date: 20 Aug 2025

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

MRCY transaction

Common Stock

Sale

Transaction value: $691,437
Shares: -10,395
Change %: -2.6%
Price: $66.52
Shares after: 388,026
Date: 18 Aug 2025
Ownership: Direct
Footnotes: F1, F2

MRCY transaction

Common Stock

Sale

Transaction value: $841,255
Shares: -13,050
Change %: -3.4%
Price: $64.46
Shares after: 374,976
Date: 19 Aug 2025
Ownership: Direct
Footnotes: F1, F2

MRCY holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 1,156
Date: 18 Aug 2025
Ownership: 401K Plan

MRCY holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 7,066
Date: 18 Aug 2025
Ownership: By Milestone Road Holdings, LLC

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 2 footnotes

Footnote F1

Represents shares sold as part of a sell-to-cover program to satisfy tax withholding obligations upon the vesting of stock awards.

Footnote 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.