Form 4: Atlassian Co-Founder Sells TEAM Shares Under 10b5-1 Plan

Atlassian Co-Founder and CEO Michael Cannon-Brookes reported the sale of 7,665 Class A Common Stock shares under a pre-arranged 10b5-1 trading plan.

Summary

• Michael Cannon-Brookes, Atlassian's Co-Founder, CEO, Director, and 10% Owner, sold a total of 7,665 shares of Class A Common Stock on January 30, 2026.
• The sales were executed pursuant to a Rule 10b5-1 trading plan that was adopted on February 20, 2025.
• The shares were sold at weighted-average prices ranging from $118.345 to $122.595 per share across multiple trades.
• Following these transactions, Michael Cannon-Brookes indirectly beneficially owns 314,265 shares of Class A Common Stock.
• The shares are held by CBC Co Pty Limited as trustee for the Cannon-Brookes Head Trust.

Sentiment

Score: 5

Explanation: StockSavvy.ai views this as a neutral event. While it's an insider sale, the execution under a Rule 10b5-1 plan mitigates concerns about immediate negative sentiment, as it's a pre-scheduled liquidity event.

Negatives

• Insider selling, even when pre-planned, can sometimes be perceived negatively by the market as it reduces management's direct equity stake.

Industry Context

StockSavvy.ai notes that insider sales, particularly by high-ranking executives and founders, are routinely monitored by investors for insights into management's confidence. However, sales executed under a Rule 10b5-1 plan, like this one, are pre-scheduled and typically do not reflect new, immediate sentiment about the company's prospects, distinguishing them from opportunistic sales.

Related Party Transactions

• Shares are held indirectly by CBC Co Pty Limited as trustee for the Cannon-Brookes Head Trust, which is a common structure for executive holdings and estate planning.

Stakeholder Impact

• Shareholders may observe a slight reduction in direct insider ownership, though the pre-planned nature of the sale under Rule 10b5-1 typically lessens concerns about management's confidence in the company's immediate future.

Key Dates

Recommendation

The insider sale, while significant in volume, was conducted under a pre-arranged 10b5-1 trading plan. This suggests a planned liquidity event rather than a reaction to new, negative information. Therefore, it does not fundamentally alter the investment thesis for Atlassian, warranting a 'hold' recommendation for existing investors to monitor future developments.

Keywords

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