SEC Filing Analysis: Workday, Inc. (WDAY)

Executive Summary

• Trading Significance: Low
• Key Takeaway: Co-founder and 10% owner David Duffield sold 94,089 shares of common stock for $18.32 million pursuant to a pre-scheduled Rule 10b5-1 trading plan.
• Market Impact: Negligible market impact given the pre-established plan and the small fraction of Duffield's overall multi-billion-dollar stake.

Company Information

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

Insider Information

Field	Value
Name	DUFFIELD DAVID A
CIK	0000938071
Title/Position	Co-Founder (Former Officer/Director)
Relationship	10% Owner

Transaction Details

Field	Value
Form Type	4
Transaction Date	2026-09-18
Transaction Code	S (Open Market Sale)
Security Type	Class A Common Stock
Shares Involved	94,089
Price Per Share	$194.69 (Weighted Average)
Total Value	$18,318,305.10
Shares Owned After	105,049 Class A / 35,976,844 Class B
Ownership Type	Indirect (Trust)

Financial Impact Assessment

Transaction Materiality

Metric	Value
Transaction Value	$18,318,305.10
% of Market Cap	0.047%
Shares Transacted	94,089
% of Shares Outstanding	0.038%
Post-Transaction Ownership	~36,081,893 total shares (~14.61% of outstanding)
Materiality Assessment	Low

Impact Evaluation

• Market Cap Context: Against Workday's large-cap valuation of $39.05 billion, an $18.3M transaction is routine liquidity management.
• Ownership Concentration: Duffield maintains significant control, retaining over 35.97 million super-voting Class B shares and 105,049 Class A shares, representing ~14.61% of total common shares outstanding.
• Dilution Impact: None; transactions involved a 1:1 conversion of existing Class B shares into Class A shares followed by immediate open-market disposition.
• Transaction Significance: The transaction falls well beneath the 0.10% threshold for both market capitalization and shares outstanding, classifying it as low significance.

Market Impact Analysis

Stock Impact Prediction

• Direction: Neutral
• Reasoning: The sales were executed under an existing Rule 10b5-1 trading plan adopted on December 2, 2025, and represent a tiny fraction (~0.26%) of Duffield's total equity position.

Volume & Sentiment

• Expected Volume Impact: Negligible; 94,089 shares represent a modest portion of average daily trading volume in WDAY.
• Sentiment Indicator: Neutral

Additional Context

Transaction Notes

• Timing: Executed on September 18, 2026, across three weighted-average tranches ranging from $194.04 to $195.73.
• Special Circumstances: The disposition was conducted via the David A. Duffield Trust dated July 14, 1988, in compliance with Rule 10b5-1 guidelines adopted on December 2, 2025.