Form 4: Atlassian Co-Founder Sells $1.27M in Stock

Atlassian Co-Founder and CEO Michael Cannon-Brookes sold 7,665 shares of Class A Common Stock for approximately $1.27 million under a pre-arranged trading plan.

Summary

• Michael Cannon-Brookes, Co-Founder, CEO, Director, and 10% Owner of Atlassian Corp, reported the sale of Class A Common Stock.
• A total of 7,665 shares were disposed of in four separate transactions on September 29, 2025.
• The sales were executed at weighted-average prices ranging from $165.4604 to $168.259 per share.
• The total value of the shares sold amounts to approximately $1,274,833.15.
• These transactions were conducted 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 7,665 shares indirectly through CBC Co Pty Limited as trustee for the Cannon-Brookes Head Trust.

Sentiment

Score: 5

Explanation: The transaction is a routine sale executed under a pre-arranged Rule 10b5-1 trading plan, indicating a neutral sentiment as it is not based on new material non-public information and is a common practice for executive financial planning.

Future Outlook

This Form 4 filing reports past transactions and does not contain any forward-looking statements or guidance regarding the company's future performance or outlook.

Industry Context

This is a routine insider transaction executed under a pre-arranged Rule 10b5-1 trading plan. Such plans are common among executives for personal financial management, diversification, and liquidity, and typically do not signal a change in company fundamentals or broader industry trends.

Related Party Transactions

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

Stakeholder Impact

• Shareholders: The sale is a routine insider transaction under a 10b5-1 plan and is unlikely to have a significant impact on shareholder sentiment or the company's valuation.
• Employees: No direct impact on employees is indicated by this filing.
• Customers/Suppliers/Creditors: No direct impact on these stakeholders is indicated by this filing.

Key Dates

Recommendation

The sale by a co-founder and CEO, Michael Cannon-Brookes, was executed under a pre-arranged Rule 10b5-1 trading plan adopted months prior. Such planned sales are typically for personal financial management, diversification, or liquidity and do not usually reflect a change in the company's fundamental outlook or warrant a shift in investment recommendation. Investors should continue to evaluate Atlassian based on its operational performance and strategic initiatives.

Keywords

Atlassian, TEAM, Michael Cannon-Brookes, Insider Trading, Form 4, Stock Sale, 10b5-1 Plan, Equity Transaction