Form 4: Atlassian CEO Sells $1.3M in Stock Under 10b5-1 Plan

Atlassian Corp CEO and Co-Founder Michael Cannon-Brookes sold 7,665 shares of Class A Common Stock for approximately $1.3 million, executed under a pre-arranged Rule 10b5-1 trading plan.

Summary

• Michael Cannon-Brookes, Atlassian Corp's CEO, Co-Founder, Director, and 10% Owner, disposed of a total of 7,665 shares of Class A Common Stock.
• The sales occurred on September 19, 2025, and were executed in three separate transactions.
• The first transaction involved 350 shares sold at a weighted-average price of $171.063 per share.
• The second transaction involved 5,596 shares sold at a weighted-average price of $169.0488 per share.
• The third transaction involved 1,719 shares sold at a weighted-average price of $169.8469 per share.
• The total value of the shares sold across these transactions is approximately $1,297,619.02.
• These transactions were effected pursuant to a Rule 10b5-1 trading plan adopted by Mr. Cannon-Brookes on February 20, 2025.
• Following these transactions, Mr. Cannon-Brookes beneficially owns 53,655 shares of Class A Common Stock indirectly through CBC Co Pty Limited as trustee for the Cannon-Brookes Head Trust.

Sentiment

Score: 4

Explanation: While the sales are part of a pre-arranged 10b5-1 plan, the reduction in direct insider ownership by a key executive and co-founder could be viewed with slight caution by some investors, even if routine. It is not a strong positive or negative signal for the company's operational performance.

Positives

• The stock sales were conducted under a pre-arranged Rule 10b5-1 trading plan, indicating that the transactions were scheduled in advance and not based on immediate, non-public information.

Negatives

• The sale of shares by a key executive and co-founder reduces their direct ownership stake in the company.

Future Outlook

No forward-looking statements or guidance are provided in this filing.

Industry Context

This filing reports a routine insider transaction and does not provide information directly related to broader industry trends or competitive landscape.

Related Party Transactions

• Following the transactions, Michael Cannon-Brookes' remaining beneficial ownership of 53,655 shares is held indirectly by CBC Co Pty Limited as trustee for the Cannon-Brookes Head Trust, indicating a related party holding structure.

Stakeholder Impact

• Shareholders may note the reduction in direct insider ownership by a key executive, though the pre-planned nature mitigates concerns about immediate market signals.
• No direct impact on employees, customers, suppliers, or creditors is indicated by this filing.

Key Dates

Recommendation

The filing details a routine, pre-planned insider stock sale by a key executive. Such transactions, especially when executed under a Rule 10b5-1 plan, are generally not indicative of a change in the company's fundamental outlook or a strong signal for immediate investment action. Investors should consider broader company performance and market conditions rather than this specific insider transaction for investment decisions.

Keywords

Atlassian, TEAM, Michael Cannon-Brookes, Insider Sale, 10b5-1 Plan, Stock Disposition, CEO, Director, 10% Owner