Form 4: Atlassian Co-Founder Michael Cannon-Brookes Sells Over 7,900 Shares Under Pre-Arranged Trading Plan

Atlassian Corp (TEAM) co-founder, CEO, Director, and 10% owner Michael Cannon-Brookes reported the sale of 7,948 shares of Class A Common Stock on May 22, 2025, executed under a Rule 10b5-1 trading plan.

Summary

• Michael Cannon-Brookes, a co-founder, CEO, Director, and 10% owner of Atlassian Corp (TEAM), reported the sale of 7,948 shares of Class A Common Stock.
• The transactions occurred on May 22, 2025, and were executed in four separate blocks.
• The sales were conducted at weighted-average prices ranging from $207.7575 to $210.5 per share.
• All reported sales were made indirectly through CBC Co Pty Limited as trustee for the Cannon-Brookes Head Trust.
• These transactions were carried out pursuant to a pre-arranged Rule 10b5-1 trading plan adopted by the Reporting Person on February 8, 2024.
• Following these transactions, the indirect beneficial ownership of Class A Common Stock by the trust decreased from an initial undisclosed amount to 79,480 shares.

Sentiment

Score: 5

Explanation: The sentiment is neutral. While insider sales can sometimes be viewed negatively, the fact that they were conducted under a pre-arranged 10b5-1 plan mitigates concerns about opportunistic selling, suggesting a planned diversification or liquidity event rather than a lack of confidence in the company.

Positives

• The sales were conducted under a Rule 10b5-1 trading plan, which indicates the transactions were pre-scheduled and not based on immediate, non-public information, potentially mitigating concerns about insider selling.

Negatives

• The sale of shares by a key insider, particularly a co-founder and CEO, could be perceived negatively by some investors as it reduces their direct stake in the company.

Risks

• While executed under a 10b5-1 plan, significant insider sales can sometimes lead to negative market sentiment or speculation regarding the insider's view on the company's future prospects, potentially impacting stock price.

Future Outlook

This Form 4 filing is a report of past insider transactions and does not contain forward-looking statements or guidance regarding the company's future outlook.

Industry Context

This filing is specific to Atlassian and its co-founder's personal stock transactions. It does not provide broader industry trends or competitive analysis, but insider trading reports are a standard part of market transparency across all industries.

Related Party Transactions

• The shares sold were held indirectly by CBC Co Pty Limited as trustee for the Cannon-Brookes Head Trust, which is a related party to Michael Cannon-Brookes.

Stakeholder Impact

• Shareholders: May observe a slight negative sentiment due to insider selling, though the 10b5-1 plan helps to alleviate concerns.
• Employees: No direct impact indicated by this filing.

Key Dates

Keywords

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