Reporting owner · CIK 0000938071

Duffield David A

Visual SEC Form 4 history across 1 companies, 38 transactions and 4 filings.

10%Workday, Inc.
Open-market mix
Latest filingSep 09, 2026, 09:52 PM
Filings4Form 4 records
Buying$00 purchases
Selling$65.6M32 sales
Net value−$65.6MBuys minus sells
Companies12 securities
Most recentSep 04, 2026unknown

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
1580-8-1512Jan 2512Jan 268Sep 26

Net value flow

Buys minus sells

Jan 25
−$30.9M
Jan 26
−$16.7M
Sep 26
−$18M

Transaction texture

Ownership and ticket size

Average P/S size$2.1M
Median P/S size$1.4M
Direct35
Indirect3
Sep 04, 2026unknown

Filing-only signals

Deterministic matches in this insider's history

Cluster Sellingpattern12Derivative Transactionfiling-context2Direct Ownershipfiling-context25Large Holdings Increaseholdings2Large Holdings Reductionholdings1Large Salesize13Repeat Sellerpattern2210b5-1 Detectedfiling-context28

Latest Form 4 facts

Quick context from source filings

Latest transaction

sale at Workday, Inc. on Sep 04, 2026 valued at $122,430.

Review SEC filing
Latest buy

No open-market insider purchase is available.

Associated companies

Visual map of known reporting history

WDAYWorkday, Inc.38 transactions · latest Sep 09, 2026, 09:52 PM
TickerInsiderRoleTypeSharesValueCodeSignals90d returnFiledTrans date
WDAYDUFFIELD DAVID A
10%
unknown10b5-190.6k$0C
Derivative Transaction Direct Ownership 10b5-1 Detected
0.0%09/0909/04
WDAYDUFFIELD DAVID A
10%
sale10b5-1600-$12.2MS
Direct Ownership Repeat Seller 10b5-1 Detected
0.0%09/0909/04
WDAYDUFFIELD DAVID A
10%
sale10b5-1600-$12.1MS
Direct Ownership Repeat Seller 10b5-1 Detected
0.0%09/0909/04
WDAYDUFFIELD DAVID A
10%
sale10b5-1224-$4.49MS
Direct Ownership Repeat Seller 10b5-1 Detected
0.0%09/0909/04
WDAYDUFFIELD DAVID A
10%
sale10b5-17.63k-$152MS
Direct Ownership Large Sale Repeat Seller+1
0.0%09/0909/04
WDAYDUFFIELD DAVID A
10%
sale10b5-130.0k-$597MS
Direct Ownership Large Holdings Reduction Large Sale+2
0.0%09/0909/04
WDAYDUFFIELD DAVID A
10%
sale10b5-131.6k-$626MS
Direct Ownership Large Sale Repeat Seller+1
0.0%09/0909/04
WDAYDUFFIELD DAVID A
10%
sale10b5-16.24k-$122MS
Direct Ownership Large Sale Repeat Seller+1
0.0%09/0909/04
WDAYDUFFIELD DAVID A
10%
sale10b5-113.6k-$267MS
Direct Ownership Large Sale 10b5-1 Detected
0.0%09/0909/04
WDAYDUFFIELD DAVID A
10%
unknown10b5-190.6k$0C
Direct Ownership Large Holdings Increase 10b5-1 Detected
0.0%09/0909/04

Duffield David A Insider Activity FAQ

SEC Form 4 context

Who is Duffield David A?

Duffield David A is a reporting owner in SEC Form 4 filings with reporting owner CIK 0000938071.

Which companies has Duffield David A reported transactions for?

Workday, Inc.

When was Duffield David A's latest insider buy?

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

When was Duffield David A's latest insider sale?

sale at Workday, Inc. on Sep 04, 2026 valued at $122,430.

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.