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

Atlassian Co-CEO Michael Cannon-Brookes sold 7,665 shares of Class A Common Stock on September 9, 2025, as part of a pre-arranged Rule 10b5-1 trading plan.

Summary

• Michael Cannon-Brookes, Co-CEO, Director, and 10% Owner of Atlassian Corp (TEAM), reported the sale of 7,665 shares of Class A Common Stock.
• The transactions occurred on September 9, 2025, and were executed pursuant to a Rule 10b5-1 trading plan adopted on February 20, 2025.
• The shares were sold at various prices ranging from $175.82 to $182.79 per share, with weighted-average prices reported for most transactions.
• Following these transactions, Michael Cannon-Brookes beneficially owns 114,975 shares of Class A Common Stock indirectly through CBC Co Pty Limited as trustee for the Cannon-Brookes Head Trust.

Sentiment

Score: 5

Explanation: The filing reports routine insider stock sales executed under a pre-arranged 10b5-1 trading plan, which is a neutral event for market sentiment as it indicates planned liquidity rather than a reaction to new information.

Positives

• The sales were conducted under a pre-arranged Rule 10b5-1 trading plan, which enhances transparency and indicates planned liquidity rather than a reaction to new, undisclosed information.

Negatives

• No specific negative implications are directly indicated by these routine insider sales under a 10b5-1 plan.

Future Outlook

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

Industry Context

This Form 4 filing reports an individual insider transaction and does not provide broader industry context or trends.

Comparison to Industry Standards

• This filing details an insider stock transaction and does not contain information suitable for comparison to industry-wide performance benchmarks or specific company projects.

Related Party Transactions

• The shares are indirectly held by CBC Co Pty Limited as trustee for the Cannon-Brookes Head Trust, indicating a related party structure for beneficial ownership.

Stakeholder Impact

• Shareholders: The sale of shares by a significant insider, even under a 10b5-1 plan, provides liquidity for the insider and slightly increases the float, but is generally not expected to have a material impact on other shareholders given the pre-planned nature.
• 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 filing reports routine insider sales executed under a Rule 10b5-1 plan, which are pre-scheduled and do not typically signal new material information about the company's performance or outlook. Therefore, this specific filing does not provide a basis for a change in investment recommendation, suggesting a 'hold' position for existing investors who should rely on broader company fundamentals and market conditions.

Keywords

Atlassian, TEAM, Michael Cannon-Brookes, Insider Trading, Form 4, Stock Sale, 10b5-1 Plan, CEO, Co-Founder