SEC Filing Analysis: Workday, Inc. (WDAY)

Executive Summary

• Trading Significance: Low
• Key Takeaway: Co-founder David A. Duffield's trust filed Form 144 for the planned sale of 99,613 shares ($18.75M) pursuant to a pre-scheduled Rule 10b5-1 trading plan.
• Market Impact: Negligible; the sale accounts for less than 0.05% of shares outstanding and reflects routine programmatic execution.

Company Information

Field	Value
Company	Workday, Inc.
Ticker Symbol	WDAY
CIK	0001327811
Industry	Services-Computer Processing & Data Preparation

Insider Information

Field	Value
Name	DUFFIELD DAVID A (DAVID A. DUFFIELD TRUST U/T/A 7/14/88)
CIK	0000938071
Title/Position	Co-Founder / 10% Stockholder
Relationship	10% Owner

Transaction Details

Field	Value
Form Type	144
Transaction Date	2026-09-23
Transaction Code	S (Proposed Sale)
Security Type	Common Stock
Shares Involved	99,613
Price Per Share	$188.23
Total Value	$18,750,154.99
Shares Owned After	null
Ownership Type	Indirect

Financial Impact Assessment

Transaction Materiality

Metric	Value
Transaction Value	$18,750,154.99
% of Market Cap	0.048%
Shares Transacted	99,613
% of Shares Outstanding	0.040%
Post-Transaction Ownership	N/A (Form 144)
Materiality Assessment	Low

Impact Evaluation

• Market Cap Context: At a market capitalization of $39.05 billion, an $18.75 million transaction is routine and easily absorbed by normal daily equity volume.
• Ownership Concentration: Duffield maintains a multi-billion dollar stake through various trusts; this sale constitutes a marginal fraction of his total beneficial ownership.
• Dilution Impact: None; the proposed transaction is an open-market secondary disposition of existing shares.
• Transaction Significance: Low significance under standard materiality thresholds, as both transaction value (<0.1% of market cap) and share volume (<0.1% of total shares outstanding) are minimal.

Market Impact Analysis

Stock Impact Prediction

• Direction: Neutral
• Reasoning: The disposition is governed by a Rule 10b5-1 plan established on December 2, 2025. Given the pre-scheduled nature and low materiality relative to market capitalization, the event provides no directional signal.

Volume & Sentiment

• Expected Volume Impact: Negligible impact on typical trading volume.
• Sentiment Indicator: Neutral

Additional Context

Transaction Notes

• Timing: Notice filed on September 23, 2026, with an approximate sale date of September 23, 2026.
• Special Circumstances: Executed pursuant to a Rule 10b5-1 trading plan adopted on December 2, 2025. The filing reflects a continuing sequence of regular sales over the preceding three months.