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

Atlassian Co-Founder Michael Cannon-Brookes sold 7,665 shares of Class A Common Stock for approximately $1.27 million under a pre-arranged 10b5-1 trading plan.

Summary

• Michael Cannon-Brookes, Atlassian's Co-Founder, CEO, and 10% Owner, reported sales of Class A Common Stock.
• A total of 7,665 shares were sold on September 26, 2025.
• The transactions were executed at weighted-average prices ranging from $162.0356 to $166.5759 per share.
• The total value of shares sold is approximately $1,267,736.
• These sales were conducted pursuant to a Rule 10b5-1 trading plan adopted on February 20, 2025.
• Following these transactions, Cannon-Brookes beneficially owns 15,330 shares indirectly through CBC Co Pty Limited as trustee for the Cannon-Brookes Head Trust.

Sentiment

Score: 5

Explanation: The sale of shares by a co-founder and CEO could be seen as slightly negative, but the execution under a pre-arranged 10b5-1 plan mitigates concerns, suggesting planned diversification rather than a reaction to adverse company-specific news. Therefore, the sentiment is neutral.

Positives

• The sales were executed under a pre-arranged Rule 10b5-1 trading plan, indicating planned diversification rather than a reaction to negative company-specific news.

Negatives

• Insider selling, even if planned, can sometimes be perceived negatively by the market, though the 10b5-1 plan mitigates this concern.

Future Outlook

NA

Industry Context

NA

Related Party Transactions

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

Stakeholder Impact

• Shareholders may note the planned sale by a key executive, which is common for diversification purposes and generally not a cause for alarm when executed under a 10b5-1 plan.

Key Dates

Recommendation

The filing reports routine insider stock sales by a co-founder and CEO under a pre-arranged 10b5-1 trading plan. Such planned sales are common for diversification and personal financial management and do not typically signal a change in the company's fundamental outlook or performance. Therefore, the information in this Form 4 alone does not warrant a change in investment thesis, leading to a 'hold' recommendation.

Keywords

Atlassian, TEAM, Michael Cannon-Brookes, Insider Trading, Form 4, Stock Sale, 10b5-1 Plan, CEO, Director, 10% Owner