DUFFIELD DAVID A sold 48.4% of their position (98.45K shares) of WORKDAY, INC. on the open market

Open‑market sale worth $18.42M — a major position exit. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 11 sales

DUFFIELD DAVID A

Filed: 10/5/2026ACC: 0000938071-26-000063

InsiderDUFFIELD DAVID ACIK 938071

→

IssuerWORKDAY, INC.CIK 1327811

10% Owner

Since Mar 2026

-98.45K

Net shares

Net seller

$18.42M

Total sold

Open market trades

0B · 11S

Total transactions

98.45K acquired · 196.89K disposed

Non-Derivative Transactions12

Class A Common Stock

Direct

C · Conversion

+98.45K

Price / share

—

Trade value

—

% of position

93.7%

10/1/2026

105.05K→203.50K

Class A Common Stock

Direct

S · Sale

−5.30K

Price / share

$183.86

Trade value

$974.48K

% of position

2.6%

10/1/2026

203.50K→198.19K

Class A Common Stock

Direct

S · Sale

−9.04K

Price / share

$184.69

Trade value

$1.67M

% of position

4.6%

10/1/2026

198.19K→189.16K

Class A Common Stock

Direct

S · Sale

−14.17K

Price / share

$185.72

Trade value

$2.63M

% of position

7.5%

10/1/2026

189.16K→174.99K

Class A Common Stock

Direct

S · Sale

−48.97K

Price / share

$186.55

Trade value

$9.14M

% of position

28.0%

10/1/2026

174.99K→126.02K

Class A Common Stock

Direct

S · Sale

−4.76K

Price / share

$187.50

Trade value

$893.23K

% of position

3.8%

10/1/2026

126.02K→121.26K

Class A Common Stock

Direct

S · Sale

−1.81K

Price / share

$188.34

Trade value

$340.71K

% of position

1.5%

10/1/2026

121.26K→119.45K

Class A Common Stock

Direct

S · Sale

−3.80K

Price / share

$190.85

Trade value

$725.22K

% of position

3.2%

10/1/2026

119.45K→115.65K

Class A Common Stock

Direct

S · Sale

−3.90K

Price / share

$191.48

Trade value

$746.78K

% of position

3.4%

10/1/2026

115.65K→111.75K

Class A Common Stock

Direct

S · Sale

−600.00

Price / share

$192.26

Trade value

$115.35K

% of position

0.5%

10/1/2026

111.75K→111.15K

Class A Common Stock

Direct

S · Sale

−4.60K

Price / share

$194.03

Trade value

$892.53K

% of position

4.1%

10/1/2026

111.15K→106.55K

Class A Common Stock

Direct

S · Sale

−1.50K

Price / share

$194.77

Trade value

$292.15K

% of position

1.4%

10/1/2026

106.55K→105.05K

Total

Net shares

+0.00

Net value

-$18.42M

Security	Date	Type	Shares	Price / Share	Trade Value	% of Position	Held Before	Held After
Class A Common Stock Direct	10/1/2026	C · Conversion	+98.45K	—	—	93.7%	105.05K	203.50K
Class A Common Stock Direct	10/1/2026	S · Sale	−5.30K	$183.86	$974.48K	2.6%	203.50K	198.19K
Class A Common Stock Direct	10/1/2026	S · Sale	−9.04K	$184.69	$1.67M	4.6%	198.19K	189.16K
Class A Common Stock Direct	10/1/2026	S · Sale	−14.17K	$185.72	$2.63M	7.5%	189.16K	174.99K
Class A Common Stock Direct	10/1/2026	S · Sale	−48.97K	$186.55	$9.14M	28.0%	174.99K	126.02K
Class A Common Stock Direct	10/1/2026	S · Sale	−4.76K	$187.50	$893.23K	3.8%	126.02K	121.26K
Class A Common Stock Direct	10/1/2026	S · Sale	−1.81K	$188.34	$340.71K	1.5%	121.26K	119.45K
Class A Common Stock Direct	10/1/2026	S · Sale	−3.80K	$190.85	$725.22K	3.2%	119.45K	115.65K
Class A Common Stock Direct	10/1/2026	S · Sale	−3.90K	$191.48	$746.78K	3.4%	115.65K	111.75K
Class A Common Stock Direct	10/1/2026	S · Sale	−600.00	$192.26	$115.35K	0.5%	111.75K	111.15K
Class A Common Stock Direct	10/1/2026	S · Sale	−4.60K	$194.03	$892.53K	4.1%	111.15K	106.55K
Class A Common Stock Direct	10/1/2026	S · Sale	−1.50K	$194.77	$292.15K	1.4%	106.55K	105.05K
Total			+0.00		-$18.42M

Derivative Transactions1

Class B Common Stock

Direct

C · Conversion

Converts to

Class A Common Stock

98.45K shares

−98.45K

Strike price

Held after

35.68M

Exercisable

—

10/1/2026

Security	Converts To	Date	Type	Shares	Strike Price	Exercisable	Held After
Class B Common Stock Direct	Class A Common Stock98.45K shares	10/1/2026	C · Conversion	−98.45K		—	35.68M