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

Atlassian Corp (TEAM) Co-Founder and CEO Michael Cannon-Brookes has sold 7,665 shares of Class A Common Stock for approximately $1.63 million, executed under a 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 10, 2025, and were executed pursuant to a Rule 10b5-1 trading plan adopted on February 20, 2025.
• The shares were sold in multiple trades at weighted-average prices ranging from $209.7677 to $215.1027 per share.
• The total value of the shares sold is approximately $1,631,292.39.
• Following these transactions, Michael Cannon-Brookes beneficially owns 99,645 shares of Class A Common Stock indirectly through CBC Co Pty Limited as trustee for the Cannon-Brookes Head Trust.

Sentiment

Score: 6

Explanation: The sentiment is neutral to slightly positive. While an insider sale reduces direct ownership, the execution under a pre-arranged 10b5-1 plan mitigates negative interpretations, indicating a planned financial management activity rather than a reaction to adverse company news.

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, enhancing transparency and reducing concerns about opportunistic insider trading.

Negatives

• The sale by a key insider, such as the Co-Founder and CEO, reduces their direct equity stake in the company, which can sometimes be perceived as a slight negative by investors, even when pre-planned.

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 filing is a routine disclosure of an insider stock transaction and does not provide broader industry context or competitive analysis. Insider sales, especially those under 10b5-1 plans, are common across industries for diversification or liquidity purposes.

Related Party Transactions

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

Stakeholder Impact

• Shareholders: The sale by a significant insider could lead to minor concerns about management's conviction, but the 10b5-1 plan largely alleviates this, suggesting a pre-planned financial move rather than a lack of confidence in the company's future.

Key Dates

Recommendation

Keywords

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