Form 4: Atlassian Co-Founder Sells $800K in Pre-Planned Shares

Atlassian Co-Founder and CEO Michael Cannon-Brookes executed pre-planned sales of 7,815 Class A Common Stock shares totaling approximately $812,760.

Summary

• Michael Cannon-Brookes, Atlassian's Co-Founder, CEO, Director, and 10% Owner, sold a total of 7,815 shares of Class A Common Stock.
• The sales occurred on February 4, 2026, with weighted-average prices ranging from $99.1375 to $108.2416 per share.
• These transactions were executed pursuant to a Rule 10b5-1 trading plan adopted on February 20, 2025.
• Following these sales, Cannon-Brookes indirectly beneficially owns 291,270 shares through CBC Co Pty Limited as trustee for the Cannon-Brookes Head Trust.

Sentiment

Score: 5

Explanation: StockSavvy.ai views this as a neutral event. The sale is pre-planned under a 10b5-1 plan, indicating routine personal financial management rather than a reaction to new company information.

Industry Context

StockSavvy.ai notes that insider sales under Rule 10b5-1 plans are common among executives for personal financial planning and diversification, and typically do not signal a change in management's outlook on the company's prospects. Such pre-scheduled sales are distinct from opportunistic sales that might raise concerns.

Comparison to Industry Standards

• StockSavvy.ai observes that sales by founders and executives are a normal part of wealth management and diversification, especially for long-tenured individuals like Michael Cannon-Brookes.
• Compared to other tech industry founders, such as Mark Zuckerberg (Meta) or Jeff Bezos (Amazon), who also routinely sell shares under 10b5-1 plans, this transaction size is relatively small and consistent with routine personal financial management rather than a significant divestment.

Related Party Transactions

• Shares are indirectly held by CBC Co Pty Limited as trustee for the Cannon-Brookes Head Trust, which is a related party arrangement for beneficial ownership.

Stakeholder Impact

• Minimal direct impact on shareholders as this is a routine, pre-planned insider sale.
• No immediate impact on employees, customers, suppliers, or creditors.

Key Dates

Recommendation

The reported insider sale by Michael Cannon-Brookes is a routine transaction executed under a pre-established Rule 10b5-1 trading plan. Such sales are typically for personal financial diversification and do not reflect a change in the company's fundamental outlook or performance. Given the pre-planned nature and relatively small size compared to total holdings, this event alone does not warrant a change in investment thesis, thus a 'hold' recommendation is appropriate.

Keywords

Atlassian, TEAM, Michael Cannon-Brookes, Insider Sale, Form 4, Stock Transaction, Rule 10b5-1, Equity Disposal, Director Sale, CEO Sale