Form 4: Atlassian Co-CEO Sells $1.2M in Stock Under 10b5-1 Plan

Atlassian Co-CEO Michael Cannon-Brookes sold 7,665 shares of Class A Common Stock for approximately $1.2 million on October 20, 2025, as part of a pre-arranged Rule 10b5-1 trading plan.

Summary

• Michael Cannon-Brookes, Atlassian's Co-CEO, Director, and 10% Owner, sold 7,665 shares of Class A Common Stock.
• The sales occurred on October 20, 2025, at weighted-average prices ranging from $153.9865 to $159.0896 per share.
• The total value of the shares sold is approximately $1,203,705.
• These transactions were executed pursuant to a Rule 10b5-1 trading plan adopted on February 20, 2025.
• Following these transactions, Cannon-Brookes beneficially owns 383,250 shares of Class A Common Stock indirectly through the Cannon-Brookes Head Trust.

Sentiment

Score: 5

Explanation: A neutral score. While insider sales can sometimes be viewed negatively, the execution under a Rule 10b5-1 plan mitigates concerns, as it indicates a pre-scheduled transaction for personal financial management rather than a reaction to specific company news.

Industry Context

Insider sales, particularly by high-level executives and significant shareholders, are common for personal financial planning, diversification, or liquidity needs. The use of a Rule 10b5-1 trading plan indicates a pre-scheduled transaction, which typically reduces concerns about the timing of the sale relative to undisclosed material information.

Stakeholder Impact

• Shareholders may note the sale by a key executive and significant owner, though the pre-arranged nature via a 10b5-1 plan suggests it is for personal financial planning and not a signal about the company's immediate prospects.

Key Dates

Recommendation

The filing is a routine Form 4 reporting a pre-scheduled insider stock sale under a Rule 10b5-1 plan. Such transactions are typically for personal financial management and do not inherently signal a change in the company's fundamentals or future outlook. Therefore, it does not provide new information that would warrant a change in investment recommendation.

Keywords

Atlassian, TEAM, Michael Cannon-Brookes, Insider Sale, Form 4, 10b5-1 Plan, Equity Transaction, CEO, Director, 10% Owner