Form 4: Atlassian Co-Founder Sells $1.18M in Shares

Atlassian CEO and Co-Founder Michael Cannon-Brookes sold 7,665 shares of Class A Common Stock on November 12, 2025, under a pre-arranged 10b5-1 trading plan.

Summary

• Michael Cannon-Brookes, CEO, Co-Founder, Director, and 10% Owner of Atlassian Corp, reported the sale of Class A Common Stock.
• A total of 7,665 shares were disposed of on November 12, 2025.
• The transactions were executed pursuant to a Rule 10b5-1 trading plan adopted on February 20, 2025.
• The sales occurred at weighted-average prices ranging from $153.7801 to $158.5167 per share.
• Following these transactions, Michael Cannon-Brookes indirectly beneficially owns 252,945 shares of Class A Common Stock through CBC Co Pty Limited as trustee for the Cannon-Brookes Head Trust.

Sentiment

Score: 5

Explanation: The sentiment is neutral as this is a routine Form 4 filing reporting a pre-scheduled sale of shares by an insider under a 10b5-1 plan, which is generally not indicative of management's view on the company's future performance.

Future Outlook

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

Industry Context

The sale of shares by an executive under a pre-arranged Rule 10b5-1 trading plan is a common practice across various industries for personal financial management, diversification, and liquidity, and is not typically indicative of specific industry trends.

Related Party Transactions

• Shares are held indirectly by CBC Co Pty Limited as trustee for the Cannon-Brookes Head Trust, indicating a related party ownership structure for a portion of the beneficial holdings.

Stakeholder Impact

• Shareholders: Minimal impact as this is a pre-planned, routine insider sale and not indicative of a change in company fundamentals or management's confidence.

Key Dates

Keywords

Atlassian, TEAM, Michael Cannon-Brookes, Insider Trading, Stock Sale, 10b5-1 Plan, Executive Compensation