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

Atlassian Co-Founder and CEO Michael Cannon-Brookes reported multiple sales of Class A Common Stock totaling 7,615 shares on January 12, 2026, executed under a pre-arranged 10b5-1 trading plan.

Summary

• Michael Cannon-Brookes, Atlassian's Co-Founder, CEO, Director, and 10% Owner, reported sales of Class A Common Stock.
• The transactions occurred on January 12, 2026.
• A total of 7,615 shares were sold across five separate transactions.
• Sales were executed pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on February 20, 2025.
• Weighted-average prices for the sales ranged from $144.3944 to $148.3399 per share.
• Following these transactions, the indirect beneficial ownership through CBC Co Pty Limited as trustee for the Cannon-Brookes Head Trust is 413,910 shares of Class A Common Stock.

Sentiment

Score: 5

Explanation: Neutral. This is a routine insider transaction under a pre-arranged 10b5-1 plan, which is common for executives to manage personal finances and diversify holdings without implying a specific sentiment about the company's future.

Future Outlook

This filing, a Form 4, does not contain any forward-looking statements or guidance regarding the company's future outlook.

Industry Context

This Form 4 filing reports a routine insider transaction under a pre-arranged trading plan, which is a common practice among executives to manage personal finances and diversify holdings. It does not provide information relevant to broader industry trends or competitive landscape.

Stakeholder Impact

• Minimal. Routine insider sales under a 10b5-1 plan are generally not seen as indicative of company performance or future prospects, thus having little direct impact on shareholders, employees, customers, suppliers, or creditors.

Key Dates

Recommendation

The reported sales by Michael Cannon-Brookes are routine transactions executed under a pre-arranged Rule 10b5-1 trading plan. Such plans are established in advance to allow insiders to sell shares without being accused of trading on material non-public information. These sales do not reflect a change in the company's fundamentals or a negative outlook from management, and therefore, do not warrant a change from a 'hold' recommendation based solely on this filing.

Keywords

Atlassian, TEAM, Michael Cannon-Brookes, insider trading, stock sale, 10b5-1 plan, beneficial ownership