Steven Ratner - 19 Aug 2026 Form 4 Insider Report for MERCURY SYSTEMS INC (MRCY)

Reporting relationship: EVP, CHRO
Issuer ticker: MRCY
Reported as of: 19 Aug 2026
Net transaction value: -$319,582
SEC form: 4
Accepted by SEC: 21 Aug 2026, 16:51:43 UTC
Prior SEC filing: 19 Aug 2026
Source filing: View source filing
Reporting owner signature: /s/ Douglas Munro, attorney-in-fact

Key filing fact

Steven Ratner filed Form 4 for MERCURY SYSTEMS INC (MRCY) on 21 Aug 2026.

Key facts

This page summarizes Steven Ratner's Form 4 filing for MERCURY SYSTEMS INC (MRCY).
2 reported transactions and 0 derivative rows are listed below.
Accepted by SEC: 21 Aug 2026, 16:51.

Change

Previous filing in this sequence was filed on 19 Aug 2026.
Current net transaction value: -$319,582.

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 0001995110 Primary reporting owner

Ratner Steven

Relationship: EVP, CHRO
Address: 50 MINUTEMAN ROAD, ANDOVER
Signature: /s/ Douglas Munro, attorney-in-fact
Signature date: 21 Aug 2026

Reported non-derivative transactions

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

MRCY transaction

Common Stock

Sale

Transaction value: $219,369
Shares: -2,187
Change %: -8.3%
Price: $100.31
Shares after: 24,301
Date: 19 Aug 2026
Ownership: Direct
Footnotes: F1, F2

MRCY transaction

Common Stock

Sale

Transaction value: $100,213
Shares: -1,026
Change %: -4.2%
Price: $97.67
Shares after: 23,275
Date: 20 Aug 2026
Ownership: Direct
Footnotes: F1, F2

MRCY holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 356
Date: 19 Aug 2026
Ownership: 401K Plan

^* 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.