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

Atlassian Corp's Co-Founder and CEO, Michael Cannon-Brookes, disposed of 7,665 shares of Class A Common Stock on June 27, 2025, through a pre-established Rule 10b5-1 trading plan.

Summary

• Michael Cannon-Brookes, Atlassian Corp's Co-Founder, CEO, Director, and 10% Owner, sold a total of 7,665 shares of Class A Common Stock.
• The transactions occurred on June 27, 2025.
• The sales were executed at weighted-average prices ranging from $200.1317 to $205.7479 per share.
• Individual trade prices for the transactions ranged from $199.81 to $206.41.
• All transactions were conducted pursuant to a Rule 10b5-1 trading plan adopted on February 20, 2025.
• Following these transactions, Michael Cannon-Brookes beneficially owns 7,665 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 sale of shares by a key insider could be seen as slightly negative, but the fact that it was conducted under a pre-arranged Rule 10b5-1 trading plan mitigates concerns, indicating a planned disposition rather than a reaction to new information. This makes the event largely neutral in terms of immediate sentiment impact.

Positives

• The sales were conducted under a pre-arranged Rule 10b5-1 trading plan, indicating a planned and systematic disposition rather than a reaction to new, non-public information.

Negatives

• Insider selling, even under a 10b5-1 plan, can sometimes be perceived negatively by investors as it reduces the insider's direct stake in the company.

Future Outlook

NA

Industry Context

This is an individual insider transaction and does not directly relate to broader industry trends or competitors, other than being a routine disclosure for a publicly traded technology company.

Stakeholder Impact

• Shareholders may perceive a slight negative signal from insider selling, though the 10b5-1 plan mitigates this. The reduction in direct beneficial ownership by a co-founder and CEO could be noted.

Key Dates

Keywords

Atlassian, TEAM, Michael Cannon-Brookes, insider trading, Form 4, stock sale, 10b5-1 plan, Class A Common Stock, CEO, Director, 10% Owner