Form 4: Atlassian Co-Founder Sells $1.2M in Shares

Atlassian Co-Founder and CEO Michael Cannon-Brookes sold 7,665 shares of Class A Common Stock for approximately $1.23 million under a pre-arranged trading plan.

Summary

• Michael Cannon-Brookes, Atlassian's Co-Founder, CEO, Director, and 10% Owner, reported sales of Class A Common Stock.
• A total of 7,665 shares were sold in three separate direct transactions on December 8, 2025.
• The sales were executed at weighted-average prices of $161.9353, $160.0774, and $160.974 per share.
• These transactions were conducted pursuant to a Rule 10b5-1 trading plan adopted on February 20, 2025.
• Following these direct sales, Michael Cannon-Brookes' indirect beneficial ownership through the Cannon-Brookes Head Trust is 122,640 shares.

Sentiment

Score: 5

Explanation: Neutral. Insider sales under a 10b5-1 plan are routine and generally do not indicate a change in sentiment towards the company's prospects. It's a pre-scheduled liquidity event.

Future Outlook

NA

Industry Context

NA

Stakeholder Impact

• Shareholders: The sale represents a minor liquidity event for an insider and is unlikely to have a significant impact on the company's share price or operations, especially given it was pre-scheduled under a 10b5-1 plan.

Key Dates

Recommendation

The filing is a routine Form 4 reporting pre-scheduled insider sales under a Rule 10b5-1 trading plan. Such transactions are generally for personal liquidity or diversification and do not typically signal a change in the company's fundamental outlook or warrant a change in investment recommendation based solely on this report.

Keywords

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