Transaction · 0001049521-26-000063

Ballhaus William L

Ballhaus William L, CHAIR, PRES, CEO, reported a transaction classified as exercise at MERCURY SYSTEMS INC involving 153676.000000 shares for an estimated $0.00. Reported holdings after the transaction were 68476.000000 shares. A 10b5-1 reference was not detected in the stored filing text.

exerciseSEC transaction code MCHAIR, PRES, CEO
MRCYMERCURY SYSTEMS INC
Filing timeAug 27
Trade dateAug 25, 2026
Filing · SECView on SEC
InsiderProfile

Price performance since filing

Close on the filing date, the pre-filing context, and the forward return at standard windows
Price at filing
Pre-filing
Returns since

MRCY price since this filing

30 days of pre-filing context and vertical markers at the filing date plus 7d / 30d / 90d / 180d / 1y afterwards
MRCY since 2026-08-27Filed 8 days ago · 30 days of pre-filing context shaded
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Filing datePost-filing windows (7d, 30d, 90d, 180d, 1y)30 days of pre-filing context

Transaction facts

Stored Form 4 columns with their raw values

Derivative
Type
exercise
Code M
Identifier
0001049521-26-000063
Employee Stock Option (Right to Buy)
Transaction date
Aug 25, 2026
Filed Aug 27, 2026, 08:54 PM · 2d delay
Shares
153k sh
$0 per share
Estimated value
$0
Computed from shares × price
Holdings after
68.4k sh
Direct

Filing signal explanations

Badges describe filing facts only — not predictions.

Cluster 14dRepeat 30dPattern $10.0MLarge $100M
Derivative Transaction Direct Ownership Large Holdings Reduction
-6score
Filing-only score

-6

Compact filing score computed from stored Form 4 facts. Version v1.

Mixed or weak signal

This filing has a negative filing-only score. It may be less informative as an insider-activity signal and needs extra context.

Reported relationships & other filings

Form 4 relationship flags and nearby filing context

Reported roles

Chairman, President & CEO

Officer YesDirector Yes10% NoOther No
Footnotes & amended
  1. F1

    Represents the exercise of a stock option award scheduled to expire on August 17, 2027.

  2. 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.

  3. 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 undertake…

  4. 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 undertake…

  5. 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 undertake…

  6. 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 undertake…

Original filing · 0001049521-26-000063
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MRCY