Reporting owner · CIK 0001436044

Ballhaus William L

Visual SEC Form 4 history across 1 companies, 13 transactions and 4 filings.

CHAIR, PRES, CEOChairman, President & CEOMERCURY SYSTEMS INC
Open-market mix
Latest filingAug 27, 2026, 08:54 PM
Filings4Form 4 records
Buying$00 purchases
Selling$22M8 sales
Net value−$22MBuys minus sells
Companies12 securities
Most recentAug 26, 2026exercise

Open-market buy performance

90-day forward return on this insider's open-market purchases

90d forward
Forward return is not available yet

We compute this from each buy's stock performance 90 days after the transaction. The price history is still being populated for this insider's their open-market buys, so the average and median will appear here once the daily price refresh has covered the relevant trading days.

Monthly open-market activity

Reported purchase and sale transaction counts

Buys Sells
1050-5-108Aug 26

Net value flow

Buys minus sells

Aug 26
−$22M

Transaction texture

Ownership and ticket size

Average P/S size$2.7M
Median P/S size$2.4M
Direct13
Indirect0
Aug 26, 2026exercise

Filing-only signals

Deterministic matches in this insider's history

Cluster Sellingpattern7Derivative Transactionfiling-context2Direct Ownershipfiling-context13Large Holdings Increaseholdings1Large Holdings Reductionholdings2Large Salesize5Repeat Sellerpattern7

Latest Form 4 facts

Quick context from source filings

Latest transaction

sale at MERCURY SYSTEMS INC on Aug 26, 2026 valued at $970,492.

Review SEC filing
Latest buy

No open-market insider purchase is available.

Latest sale

sale at MERCURY SYSTEMS INC on Aug 26, 2026 valued at $970,492.

Review SEC filing

Associated companies

Visual map of known reporting history

MRCYMERCURY SYSTEMS INC13 transactions · latest Aug 27, 2026, 08:54 PM
TickerInsiderRoleTypeSharesValueCodeSignals90d returnFiledTrans date
MRCYBallhaus William L
CHAIRPRESCEO
exercise68.4k$0M
Derivative Transaction Direct Ownership
—08/2708/26
MRCYBallhaus William L
CHAIRPRESCEO
exercise153k$0M
Derivative Transaction Direct Ownership Large Holdings Reduction
—08/2708/25
MRCYBallhaus William L
CHAIRPRESCEO
sale10.8k-$97.0MS
Cluster Selling Direct Ownership Repeat Seller
—08/2708/26
MRCYBallhaus William L
CHAIRPRESCEO
sale38.2k-$340MS
Cluster Selling Direct Ownership Large Sale+1
—08/2708/26
MRCYBallhaus William L
CHAIRPRESCEO
exercise68.4k$294MM
Direct Ownership
—08/2708/26
MRCYBallhaus William L
CHAIRPRESCEO
sale3.44k-$30.3MS
Cluster Selling Direct Ownership Repeat Seller
—08/2708/25
MRCYBallhaus William L
CHAIRPRESCEO
sale107k-$937MS
Cluster Selling Direct Ownership Large Holdings Reduction+2
—08/2708/25
MRCYBallhaus William L
CHAIRPRESCEO
exercise153k$660MM
Direct Ownership Large Holdings Increase
—08/2708/25
MRCYBallhaus William L
CHAIRPRESCEO
sale22.0k-$214MS
Cluster Selling Direct Ownership Large Sale+1
−3.1%08/2108/20
MRCYBallhaus William L
CHAIRPRESCEO
sale26.8k-$268MS
Cluster Selling Direct Ownership Large Sale+1
−3.1%08/2108/19

Ballhaus William L Insider Activity FAQ

SEC Form 4 context

Who is Ballhaus William L?

Ballhaus William L is a reporting owner in SEC Form 4 filings with reporting owner CIK 0001436044.

Which companies has Ballhaus William L reported transactions for?

MERCURY SYSTEMS INC

When was Ballhaus William L's latest insider buy?

No open-market insider purchase is available for this period.

When was Ballhaus William L's latest insider sale?

sale at MERCURY SYSTEMS INC on Aug 26, 2026 valued at $970,492.

Where can I see the original SEC filings?

Each transaction row links directly to the source SEC filing so the reported Form 4 details can be reviewed.

Are performance metrics included?

This version does not calculate win rates, forward returns, benchmark-adjusted returns, or high-conviction scores.