Reporting owner · CIK 0001388390

Mosley William D

Visual SEC Form 4 history across 1 companies, 79 transactions and 9 filings.

CEOCEOSeagate Technology Holdings plc
Open-market mix
Latest filingSep 03, 2026, 08:51 PM
Filings9Form 4 records
Buying$00 purchases
Selling$59.8M63 sales
Net value−$59.8MBuys minus sells
Companies15 securities
Most recentSep 01, 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
30150-15-302Jan 253Feb 254Mar 259Jan 2616Feb 263Aug 2626Sep 26

Net value flow

Buys minus sells

Jan 25
−$1.7M
Feb 25
−$1.9M
Mar 25
−$2M
Jan 26
−$5.7M
Feb 26
−$8.6M
Aug 26
−$15.4M
Sep 26
−$24.5M

Transaction texture

Ownership and ticket size

Average P/S size$949.8K
Median P/S size$628.6K
Direct79
Indirect0
Sep 01, 2026exercise

Filing-only signals

Deterministic matches in this insider's history

Cluster Sellingpattern7Derivative Transactionfiling-context9Direct Ownershipfiling-context51Large Holdings Increaseholdings5Large Holdings Reductionholdings1Large Salesize8Repeat Sellerpattern3110b5-1 Detectedfiling-context34

Latest Form 4 facts

Quick context from source filings

Latest transaction

sale at Seagate Technology Holdings plc on Sep 01, 2026 valued at $66,564.

Review SEC filing
Latest buy

No open-market insider purchase is available.

Latest sale

sale at Seagate Technology Holdings plc on Sep 01, 2026 valued at $66,564.

Review SEC filing

Associated companies

Visual map of known reporting history

STXSeagate Technology Holdings plc79 transactions · latest Sep 03, 2026, 08:51 PM
TickerInsiderRoleTypeSharesValueCodeSignals90d returnFiledTrans date
STXMOSLEY WILLIAM D
CEO
sale10b5-11.57k-$128MS
Cluster Selling Direct Ownership Large Sale+2
0.0%09/0309/01
STXMOSLEY WILLIAM D
CEO
sale10b5-11.10k-$89.5MS
Cluster Selling Direct Ownership Repeat Seller+1
0.0%09/0309/01
STXMOSLEY WILLIAM D
CEO
sale10b5-11.15k-$93.9MS
Cluster Selling Direct Ownership Repeat Seller+1
0.0%09/0309/01
STXMOSLEY WILLIAM D
CEO
sale10b5-1960-$77.6MS
Cluster Selling Direct Ownership Repeat Seller+1
0.0%09/0309/01
STXMOSLEY WILLIAM D
CEO
sale10b5-1160-$12.9MS
Cluster Selling Direct Ownership Repeat Seller+1
0.0%09/0309/01
STXMOSLEY WILLIAM D
CEO
sale10b5-1160-$12.8MS
Cluster Selling Direct Ownership Repeat Seller+1
0.0%09/0309/01
STXMOSLEY WILLIAM D
CEO
sale10b5-1357-$28.7MS
Cluster Selling Direct Ownership Repeat Seller+1
0.0%09/0309/01
STXMOSLEY WILLIAM D
CEO
exercise10b5-114.0k$64.7MM
Direct Ownership 10b5-1 Detected
0.0%09/0309/01
STXMOSLEY WILLIAM D
CEO
grant31.8k$0A
Derivative Transaction Direct Ownership Large Holdings Increase
+3.6%08/2408/20
STXMOSLEY WILLIAM D
CEO
grant1.58k$0A
Derivative Transaction Direct Ownership Large Holdings Increase
+3.6%08/2408/20

Mosley William D Insider Activity FAQ

SEC Form 4 context

Who is Mosley William D?

Mosley William D is a reporting owner in SEC Form 4 filings with reporting owner CIK 0001388390.

Which companies has Mosley William D reported transactions for?

Seagate Technology Holdings plc

When was Mosley William D's latest insider buy?

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

When was Mosley William D's latest insider sale?

sale at Seagate Technology Holdings plc on Sep 01, 2026 valued at $66,564.

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.