Form 4: Atlassian Co-Founder Sells $926K in Shares

Atlassian Co-Founder and CEO Michael Cannon-Brookes sold 7,665 shares of Class A Common Stock for approximately $926,011 on January 16, 2026, under a pre-arranged 10b5-1 trading plan.

Summary

• Michael Cannon-Brookes, Atlassian's Co-Founder, CEO, Director, and 10% owner, sold 7,665 shares of Class A Common Stock.
• The transactions occurred on January 16, 2026, at weighted-average prices ranging from $118.7736 to $125.45 per share.
• The total value of the shares sold is approximately $926,011.82.
• These sales were executed pursuant to a Rule 10b5-1 trading plan adopted on February 20, 2025.
• Following these transactions, Michael Cannon-Brookes indirectly beneficially owns 383,250 shares of Class A Common Stock through CBC Co Pty Limited as trustee for the Cannon-Brookes Head Trust.

Sentiment

Score: 4

Explanation: The sale of shares by a key insider, even under a pre-arranged plan, can be interpreted as a slight negative signal regarding future growth or valuation, though the impact is often limited for planned sales.

Positives

• The sales were conducted under a pre-arranged Rule 10b5-1 trading plan, indicating a planned and systematic approach to share disposition rather than an immediate reaction to new information.

Negatives

• Insider selling by a key executive (CEO, Co-Founder) and significant shareholder (10% owner) can sometimes be perceived negatively by the market, potentially signaling a desire to diversify personal holdings.

Risks

• Potential negative market perception due to insider selling by a high-ranking executive and significant shareholder.

Future Outlook

NA

Industry Context

NA

Stakeholder Impact

• Shareholders: May interpret the insider sale as a signal, potentially leading to minor short-term price fluctuations. However, the 10b5-1 plan suggests a pre-planned diversification rather than a reaction to new negative news.

Key Dates

Recommendation

While insider selling by a key executive might raise questions, the transaction was executed under a pre-arranged 10b5-1 plan, which suggests a systematic approach to personal financial management rather than a reaction to new, undisclosed negative information. Without additional context on Atlassian's performance or other market factors, a 'hold' recommendation is appropriate, advising investors to monitor future company performance and insider activity.

Keywords

Atlassian, TEAM, Michael Cannon-Brookes, Insider Sale, Form 4, 10b5-1 plan, CEO, Co-Founder, Stock Transaction, Equity Sale