Transaction · 0001049521-26-000063

Ballhaus William L

Ballhaus William L, CHAIR, PRES, CEO, reported a transaction classified as exercise at MERCURY SYSTEMS INC involving 68476.000000 shares for an estimated $2944468.00. Reported holdings after the transaction were 410912.325000 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 26, 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

Non-derivative
Type
exercise
Code M
Identifier
0001049521-26-000063
Common Stock
Transaction date
Aug 26, 2026
Filed Aug 27, 2026, 08:54 PM · 1d delay
Shares
68.4k sh
$4.30k per share
Estimated value
$294M
Computed from shares × price
Holdings after
410k sh
Direct

Filing signal explanations

Badges describe filing facts only — not predictions.

Cluster 14dRepeat 30dPattern $10.0MLarge $100M
Direct Ownership
+10score
Filing-only score

+10

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

Positive filing signal

This filing has a modest positive filing-only score. Treat it as a useful flag for review, not as a buy signal.

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