Form 4: Workday Founder David Duffield Executes Stock Sale

Workday co-founder David Duffield sold 107,500 shares of Class A Common Stock via a pre-arranged Rule 10b5-1 trading plan.

Summary

• David A. Duffield, through the David A. Duffield Trust, converted 107,500 shares of Class B Common Stock into Class A Common Stock.
• The converted shares were subsequently sold in multiple transactions on June 9, 2026.
• The sales were executed at weighted average prices ranging from $135.5359 to $140.3666 per share.
• The transactions were conducted pursuant to a Rule 10b5-1 trading plan adopted on December 2, 2025.

Sentiment

Score: 5

Explanation: StockSavvy.ai views this as a neutral event; it is a routine divestment by a founder under a pre-planned trading arrangement.

Positives

• The sale was executed under a pre-established Rule 10b5-1 plan, indicating the transactions were planned in advance rather than based on non-public information.

Negatives

• The transaction represents a reduction in the founder's direct beneficial ownership of Workday, Inc. common stock.

Risks

• Continued selling by major insiders or founders can sometimes create downward pressure on the stock price or signal a lack of long-term confidence to retail investors.

Future Outlook

No specific forward-looking guidance regarding company operations was provided in this filing, as it is a standard disclosure of insider transaction activity.

Industry Context

StockSavvy.ai notes that insider selling by founders is a common occurrence for liquidity and diversification purposes and does not necessarily reflect a change in the company's fundamental business outlook.

Comparison to Industry Standards

• The use of Rule 10b5-1 trading plans is the industry standard for corporate insiders to sell shares while maintaining compliance with SEC regulations regarding insider trading.

Stakeholder Impact

• Shareholders should note the reduction in the founder's stake, though the use of a 10b5-1 plan mitigates concerns regarding market timing.

Next Steps

• Continued monitoring of future Form 4 filings to track further sales under the established 10b5-1 plan.

Key Dates

Keywords

Workday, WDAY, Insider Trading, David Duffield, Form 4, Stock Sale, Rule 10b5-1