Form 4: Atlassian Co-Founder Sells Shares via 10b5-1 Plan
Insider Transaction Report
Atlassian CEO and Co-Founder Michael Cannon-Brookes sold 7,665 Class A Common Stock shares on October 30, 2025, through a pre-arranged 10b5-1 trading plan.
Summary
- Michael Cannon-Brookes, Atlassian's CEO, Co-Founder, Director, and 10% Owner, reported sales of Class A Common Stock.
- Transactions occurred on October 30, 2025.
- A total of 7,665 shares were sold across multiple transactions.
- Sales were executed under a Rule 10b5-1 trading plan adopted on February 20, 2025.
- Weighted-average prices for the sales ranged from $157.876 to $164.1239 per share.
- Following these transactions, Cannon-Brookes indirectly holds 321,930 Class A Common Stock shares through CBC Co Pty Limited as trustee for the Cannon-Brookes Head Trust.
Sentiment
Score: 5
Explanation: Neutral. The filing reports routine insider stock sales under a pre-arranged 10b5-1 plan, which is a common practice for executives for diversification and liquidity purposes. While it's insider selling, the pre-planned nature mitigates immediate negative sentiment.
Positives
- Transactions were conducted under a pre-arranged Rule 10b5-1 trading plan, indicating planned sales rather than a reaction to new, undisclosed information.
Negatives
- Significant insider selling by a key executive and 10% owner, Michael Cannon-Brookes, reducing his direct beneficial ownership.
Risks
- Potential negative market perception due to insider selling, despite the existence of a 10b5-1 plan.
Corporate Governance
| Change Type | Description | Effective Date | Impact Assessment |
|---|---|---|---|
| Trading Plan Adoption | Michael Cannon-Brookes adopted a Rule 10b5-1 trading plan on February 20, 2025, to pre-arrange sales of Atlassian Class A Common Stock. | 2025-02-20 | Enhances transparency and provides an affirmative defense against insider trading allegations for planned sales. |
Related Party Transactions
- Shares are held indirectly by CBC Co Pty Limited as trustee for the Cannon-Brookes Head Trust.
Stakeholder Impact
- Shareholders may interpret insider selling as a negative signal, though the 10b5-1 plan mitigates this perception.
Key Dates
| Date | Description |
|---|---|
| 2025-02-20 | Rule 10b5-1 trading plan adopted by Michael Cannon-Brookes. |
| 2025-10-30 | Date of Class A Common Stock sales by Michael Cannon-Brookes. |
| 2025-10-31 | Date of filing of the Form 4. |
Recommendation
holdThe filing details routine insider sales executed under a pre-arranged 10b5-1 plan. This type of transaction is common for executives for personal financial planning and diversification and does not typically signal a change in the company's fundamental outlook. Therefore, a 'hold' recommendation is appropriate as this filing alone does not provide new information to warrant a change in investment thesis.
Keywords
Atlassian, TEAM, Michael Cannon-Brookes, Insider Trading, Form 4, Stock Sale, 10b5-1 Plan, Corporate Governance
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