Form 4: Atlassian Co-Founder Sells Shares Under 10b5-1 Plan

Atlassian Co-Founder and CEO Michael Cannon-Brookes sold 7,665 shares of Class A Common Stock on November 19, 2025, under a pre-arranged trading plan.

Summary

• Michael Cannon-Brookes, a Director, 10% Owner, CEO, and Co-Founder of Atlassian Corp (TEAM), reported sales of Class A Common Stock.
• On November 19, 2025, a total of 7,665 shares were sold across four separate transactions.
• The sales were executed at weighted-average prices ranging from $146.8265 to $149.7027 per share.
• 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 indirectly beneficially owns 214,620 shares of Class A Common Stock, held by CBC Co Pty Limited as trustee for the Cannon-Brookes Head Trust.

Sentiment

Score: 5

Explanation: The sentiment is neutral as this is a routine Form 4 filing reporting insider sales executed under a pre-arranged 10b5-1 trading plan, which is a common practice for executives to manage personal finances and diversify holdings without implying a negative outlook on the company.

Negatives

• Insider selling, even under a pre-arranged plan, can sometimes be perceived negatively by investors, though it is a common practice for diversification and liquidity.

Future Outlook

This filing does not contain any forward-looking statements or guidance regarding Atlassian's future performance or strategic direction.

Management Comments

• The transactions were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on February 20, 2025.

Industry Context

This Form 4 filing reports a routine insider stock transaction and does not provide information directly related to broader industry trends or competitive landscape within the software and collaboration tools sector.

Related Party Transactions

• Shares are held by CBC Co Pty Limited as trustee for the Cannon-Brookes Head Trust, indicating indirect beneficial ownership.

Stakeholder Impact

• Shareholders may note the sale by a key executive, but given it's a 10b5-1 plan, it typically has minimal impact on investor confidence compared to unplanned sales.
• Employees, customers, suppliers, and creditors are unlikely to be directly impacted by this routine insider transaction.

Key Dates

Keywords

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