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

Atlassian CEO and Co-Founder Michael Cannon-Brookes sold 7,665 shares of Class A Common Stock on September 3, 2025, as part of a pre-arranged trading plan.

Summary

• Michael Cannon-Brookes, CEO, Co-Founder, Director, and 10% Owner of Atlassian Corp (TEAM), reported the sale of 7,665 shares of Class A Common Stock.
• The transactions occurred on September 3, 2025, at weighted-average prices ranging from $170.5754 to $173.22 per share.
• The sales were executed pursuant to a Rule 10b5-1 trading plan, which was adopted by Mr. Cannon-Brookes on February 20, 2025.
• Following these transactions, Mr. Cannon-Brookes beneficially owns 145,635 shares of Class A Common Stock indirectly through CBC Co Pty Limited as trustee for the Cannon-Brookes Head Trust.

Sentiment

Score: 5

Explanation: The filing reports a routine insider sale under a pre-arranged 10b5-1 plan, which is a neutral event. It does not indicate any new positive or negative developments for the company itself.

Positives

• The sale was conducted under a pre-arranged Rule 10b5-1 trading plan, indicating a structured and pre-planned divestment rather than an immediate reaction to new, undisclosed information.
• The reporting person retains a significant beneficial ownership of 145,635 shares, demonstrating continued alignment with shareholder interests.

Negatives

• An insider sale, even under a 10b5-1 plan, can sometimes be perceived negatively by the market as it reduces the insider's direct stake in the company.

Risks

• The market's perception of insider sales, even when pre-planned, could lead to short-term negative sentiment or increased scrutiny of the company's stock performance.
• Future stock price volatility could impact the value of the remaining shares held by the reporting person.

Future Outlook

The filing does not contain any forward-looking statements or guidance regarding the company's future performance or strategic direction. It solely reports an insider transaction.

Industry Context

Insider transactions are a routine part of the market, especially for long-serving executives and founders. Sales under Rule 10b5-1 plans are common for executives to diversify personal holdings and manage liquidity without being accused of trading on material non-public information. This transaction is consistent with typical executive financial planning in the tech industry.

Comparison to Industry Standards

• Sales under Rule 10b5-1 plans are a standard practice among executives at publicly traded companies, including those in the software and technology sectors like Microsoft, Salesforce, and Adobe, to manage personal finances while adhering to SEC regulations.
• The volume of shares sold (7,665 shares) represents a small fraction of the reporting person's total beneficial ownership (145,635 shares remaining), which is typical for diversification purposes rather than a complete divestment.

Related Party Transactions

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

Stakeholder Impact

• Shareholders: The sale by a key executive might lead to minor short-term sentiment shifts, but the pre-planned nature mitigates concerns about adverse company-specific news.
• Employees: No direct impact on employees is indicated by this filing.
• Customers/Suppliers/Creditors: No direct impact on these stakeholders is indicated by this filing.

Next Steps

• The reporting person may continue to execute transactions under the adopted Rule 10b5-1 plan, as per its terms.

Key Dates

Recommendation

This Form 4 filing reports a routine insider sale under a pre-arranged 10b5-1 plan. Such transactions are common for executives to manage personal finances and are generally not indicative of the company's fundamental performance or future outlook. Therefore, it does not provide a basis for a change in investment recommendation, suggesting a 'hold' position remains appropriate based solely on this filing.

Keywords

Atlassian, TEAM, Insider Sale, Form 4, Michael Cannon-Brookes, 10b5-1 Plan, Equity Transaction, Director Sale, CEO Sale