Form 4: Atlassian Co-Founder Michael Cannon-Brookes Sells Over 7,600 Shares Under Pre-Arranged Trading Plan

Atlassian Co-Founder, CEO, and 10% owner Michael Cannon-Brookes reported the sale of 7,665 shares of Class A Common Stock on June 25, 2025, executed under a pre-established Rule 10b5-1 trading plan.

Summary

• Michael Cannon-Brookes, Co-Founder, 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 June 25, 2025, and were executed pursuant to a Rule 10b5-1 trading plan adopted on February 20, 2025.
• The sales were conducted in multiple trades at weighted-average prices ranging from $197.9365 to $203.7144 per share.
• Following these transactions, Michael Cannon-Brookes' indirect beneficial ownership, held through CBC Co Pty Limited as trustee for the Cannon-Brookes Head Trust, stands at 22,995 shares of Class A Common Stock.

Sentiment

Score: 5

Explanation: The sentiment is neutral. While an insider sale can be seen negatively, the execution under a Rule 10b5-1 plan mitigates concerns that the sale is based on new, negative information. It's a pre-planned transaction for personal financial management.

Positives

• The sales were conducted under a pre-arranged Rule 10b5-1 trading plan, which indicates the transactions were scheduled in advance and not based on immediate, non-public information, thereby reducing potential concerns about insider trading.

Negatives

• The sale of 7,665 shares by a key insider, including the CEO and a 10% owner, could be perceived negatively by some market participants as it reduces their direct stake in the company.

Risks

• While executed under a 10b5-1 plan, significant insider selling, especially by a co-founder and CEO, can sometimes be interpreted by investors as a lack of confidence in the company's near-term prospects, potentially leading to negative market sentiment.

Future Outlook

The document does not provide any forward-looking statements or guidance regarding the company's future performance or strategic direction, focusing solely on the reported insider stock transactions.

Industry Context

This Form 4 filing details a routine insider stock transaction for Atlassian Corp, a leading provider of team collaboration and productivity software. Such transactions are common for executives managing personal finances and diversification, especially when executed under pre-arranged trading plans, and do not inherently reflect broader industry trends or competitive shifts.

Corporate Governance

Related Party Transactions

• The shares are held indirectly by CBC Co Pty Limited as trustee for the Cannon-Brookes Head Trust, indicating a transaction involving a trust associated with the reporting person.

Stakeholder Impact

• Shareholders: The sale by a key insider might lead to short-term speculation or minor negative sentiment, but the 10b5-1 plan mitigates concerns about the company's immediate prospects.
• 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

Keywords

Atlassian, TEAM, Michael Cannon-Brookes, Insider Trading, Form 4, SEC Filing, Stock Sale, Rule 10b5-1, Corporate Governance, CEO, Director, 10% Owner