Workday Co-Founder David Duffield Sells $15.3M Stock via 10b5-1 Plan
Workday, Inc.
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Filing Summary
Workday Co-Founder David Duffield Sells $15.3M Stock via 10b5-1 Plan
Company: Workday, Inc. (WDAY) Form: 4 | Filed: 2026-03-12 Significance: Low (0.04% of Market Cap)
Insider: DUFFIELD DAVID A Relationship: 10% Owner
Transaction: • Type: Sale (Rule 10b5-1) • Shares: 107,500 • Avg Price: ~$142.18 • Total Value: $15,284,227 • Class A Owned After: 105,049 (Holds ~38.2M Class B)
Key Insight: Co-Founder converted Class B shares to sell $15.3M in Class A stock. While the absolute value is high, it represents just 0.04% of the company's market cap and a tiny fraction of his total voting power (Class B).
Market Context: Transaction executed under a pre-planned 10b5-1 trading plan adopted in Dec 2025, mitigating bearish sentiment.
Comprehensive Analysis
SEC Filing Analysis: Workday, Inc. (WDAY)
Executive Summary
- Trading Significance: Low
- Key Takeaway: Co-Founder David Duffield executed a planned sale of $15.3M, representing a negligible percentage of market cap and his total holdings.
- Market Impact: Neutral - The sale was pre-planned (10b5-1) and volume is low relative to liquidity.
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 |
| CIK | 0000938071 |
| Title/Position | N/A |
| Relationship | 10% Owner |
Transaction Details
| Field | Value |
|---|---|
| Form Type | 4 |
| Transaction Date | 2026-03-10 |
| Transaction Code | S (Sale) |
| Security Type | Class A Common Stock |
| Shares Involved | 107,500 |
| Avg Price Per Share | ~$142.18 |
| Total Value | ~$15,284,227 |
| Shares Owned After | 105,049 (Class A) |
| Ownership Type | Indirect (Trust) |
Financial Impact Assessment
Transaction Materiality
| Metric | Value |
|---|---|
| Transaction Value | $15,284,227 |
| % of Market Cap | 0.043% |
| Shares Transacted | 107,500 |
| % of Shares Outstanding | 0.041% |
| Materiality Assessment | Low |
Impact Evaluation
- Market Cap Context: For a large-cap company valued at $35.18 billion, a $15.3M transaction is routine liquidity management rather than a market-moving event.
- Ownership Concentration: While the filing shows ~105k Class A shares remaining, the derivative table reveals the insider retains 38,281,334 Class B shares. This sale represents less than 0.3% of his total economic interest.
- Transaction Significance: The transaction falls well below the 0.1% threshold for market cap significance, classifying it as Low impact despite the high nominal dollar value.
Market Impact Analysis
Stock Impact Prediction
- Direction: Neutral
- Reasoning: The sale was executed via a Rule 10b5-1 trading plan adopted in December 2025. Planned sales by founders are standard for diversification and rarely signal fundamental issues.
Volume & Sentiment
- Expected Volume Impact: Negligible. 107,500 shares is a fraction of WDAY's average daily volume.
- Sentiment Indicator: Neutral. The presence of the 10b5-1 plan removes the "panic selling" narrative.
Additional Context
Transaction Notes
- Structure: The insider converted 107,500 Class B shares (super-voting) into Class A shares immediately prior to selling them.
- Special Circumstances: Footnote F2 confirms this sale was effected pursuant to a Rule 10b5-1 trading plan adopted on December 2, 2025.
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Important Disclaimer
This content is drawn from public SEC filings and may contain errors. It is for informational purposes only and is not investment, legal, or tax advice.
Nothing here is a recommendation to buy, sell, or hold any security. Do your own due diligence.