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

Atlassian Corporation Co-Founder and Co-CEO Michael Cannon-Brookes executed the sale of 7,665 Class A Common Stock shares on July 30, 2025, through a pre-established Rule 10b5-1 trading plan.

Summary

• Michael Cannon-Brookes, a Director, 10% Owner, and Co-Founder/CEO of Atlassian Corp (TEAM), sold a total of 7,665 shares of Class A Common Stock.
• The sales occurred on July 30, 2025, at weighted-average prices ranging from $195.7915 to $199.6085 per share.
• The transactions were executed pursuant to a Rule 10b5-1 trading plan adopted by Mr. Cannon-Brookes on February 20, 2025.
• Following these transactions, Mr. Cannon-Brookes beneficially owns 329,595 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 sentiment is neutral. While an insider sale reduces ownership, the fact that it was conducted under a pre-arranged 10b5-1 plan mitigates any negative signal, indicating a planned liquidity event rather than a reaction to adverse company news.

Positives

• The sale was conducted under a Rule 10b5-1 trading plan, indicating a pre-scheduled transaction for personal financial planning rather than a reaction to new negative company information.

Negatives

• The sale by a co-founder and CEO reduces the overall insider ownership stake in Atlassian Corporation.

Future Outlook

This filing does not contain any forward-looking statements or guidance regarding the company's future performance.

Industry Context

This insider transaction is a routine disclosure for publicly traded companies and does not directly reflect broader industry trends, though it is common for executives in the technology sector to utilize 10b5-1 plans for liquidity and diversification.

Related Party Transactions

• Shares are held indirectly by CBC Co Pty Limited as trustee for the Cannon-Brookes Head Trust.

Stakeholder Impact

• Shareholders are impacted by the change in insider ownership, as a co-founder and CEO has reduced their direct stake, though the shares remain beneficially owned through a trust.

Key Dates

Keywords

Atlassian, TEAM, Michael Cannon-Brookes, Insider Trading, Form 4, Stock Sale, 10b5-1 Plan, Executive Compensation, Corporate Governance