David A Duffield

10% owner · Workday

David A Duffield (10% owner) filed 35 Form 4 reports in the trailing twelve months (0 purchases, 35 sales, 1 filed past the two-business-day deadline), most often in Workday, Inc. (WDAY). The largest single filing was $19.1M of WDAY (99,613 sh across 6 lots, as filed), executed Sep 23. Data as of Nov 8 2026.

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Return, ttmiAverage return per filing, trailing twelve months

–

no purchases on file

Delay-adjustediThe same average, entered at disclosure dates

–

returns measure stock purchases only

Filings, ttm

0 buys · 35 sells · 1 late

Median delay

–

measured on stock purchases

Volume, ttmiDollar value disclosed in the trailing twelve months

$556.5M

shares × price, as filed

Last traded

Oct 9

Filed Oct 13

Median ADV $812.6M across their filed names

Open performance→

Volume by month

Buys $0 Sells $972.0M

Shares × price, as filed · by filing month · past 24 months

Sectors filed on

Technology 35 filings

Sector per market data · by filing · past 12 months

Most traded names

WDAY

Workday, Inc. WDAY · 0 buys · 59 sells 59 filings

Recent filings

WDAYSALE Workday, Inc. View filing → $17.9M
90,391 sh across 7 lots
Exec Sep 4
Filed Sep 9 · 5:52 PM ET WDAYSALE Workday, Inc. View filing → $18.9M
94,861 sh across 8 lots
Exec Sep 1
Filed Sep 3 · 4:25 PM ET WDAYSALE Workday, Inc. View filing → $14.6M
106,900 sh across 7 lots
Exec Jul 9
Filed Jul 13 · 4:28 PM ET WDAYSALE Workday, Inc. View filing → $14.5M
107,400 sh across 9 lots
Exec Jul 6
Filed Jul 7 · 4:49 PM ET WDAYSALE Workday, Inc. View filing → $13.1M
107,500 sh across 4 lots
Exec Jun 30
Filed Jul 1 · 5:02 PM ET WDAYSALE Workday, Inc. View filing → $12.4M
107,500 sh across 6 lots
Exec Jun 25
Filed Jun 29 · 5:30 PM ET WDAYSALE Workday, Inc. View filing → $12.3M
107,500 sh across 9 lots
Exec Jun 22
Filed Jun 24 · 5:30 PM ET WDAYSALE Workday, Inc. View filing → $13.4M
107,500 sh across 7 lots
Exec Jun 17
Filed Jun 18 · 5:30 PM ET More filings →