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

Atlassian CEO and Co-Founder Michael Cannon-Brookes reported the sale of 7,665 Class A Common Stock shares totaling approximately $1.24 million under a pre-arranged 10b5-1 trading plan.

Summary

• Michael Cannon-Brookes, Atlassian's CEO, Co-Founder, Director, and 10% Owner, reported the sale of 7,665 shares of Class A Common Stock.
• The sales occurred on August 13, 2025, at weighted-average prices ranging from $157.46 to $163.79 per share.
• The total value of the shares sold amounts to approximately $1,240,315.36.
• These transactions were executed pursuant to a Rule 10b5-1 trading plan adopted by Mr. Cannon-Brookes on February 20, 2025.
• Following these transactions, Mr. Cannon-Brookes beneficially owns 252,945 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 sentiment is neutral to slightly positive. While insider sales can sometimes be viewed negatively, the fact that these sales were conducted under a pre-arranged 10b5-1 plan mitigates any concerns that the insider is selling due to negative undisclosed information. It indicates a planned liquidity event rather than a reaction to company performance.

Positives

• The sales were conducted under a Rule 10b5-1 trading plan, indicating they were pre-scheduled and not a reaction to new, non-public information, which can mitigate negative perceptions of insider selling.

Negatives

• The transactions represent a reduction in direct insider ownership, which some investors may view as a slight negative, although mitigated by the 10b5-1 plan.

Risks

• No specific new risks were disclosed in this Form 4 filing beyond the general implication of insider selling, which is mitigated by the pre-arranged 10b5-1 plan.

Future Outlook

This Form 4 filing does not provide any forward-looking statements or guidance regarding Atlassian's future performance or strategic direction.

Management Comments

• The reported transactions were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on February 20, 2025.

Industry Context

This filing is a routine insider transaction report and does not provide information directly related to broader industry trends or competitive landscape. It reflects an individual's pre-planned stock 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 beneficial ownership by insiders.

Stakeholder Impact

• Shareholders: A minor reduction in insider ownership, but the pre-planned nature of the sales under a 10b5-1 plan suggests no immediate negative implications for company fundamentals or outlook.

Key Dates

Recommendation

This Form 4 filing details routine, pre-planned insider stock sales under a 10b5-1 plan. Such transactions typically do not reflect a change in the company's fundamental outlook or performance and are generally not considered a basis for a significant shift in investment recommendation. Investors should continue to evaluate Atlassian based on its financial results, strategic initiatives, and market position.

Keywords

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