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 for approximately $1.4 million under a pre-arranged trading plan.

Summary

• Michael Cannon-Brookes, a Director, 10% Owner, and CEO/Co-Founder of Atlassian Corp (TEAM), sold 7,665 shares of Class A Common Stock.
• The transactions occurred on August 1, 2025, at weighted-average prices ranging from $182.7488 to $189.09 per share.
• The total value of the shares sold is approximately $1,418,900.
• These sales 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 indirectly beneficially owns 314,265 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. While an insider sale reduces ownership, the fact that it was conducted under a pre-arranged 10b5-1 plan mitigates any negative implications, indicating it's a planned liquidity event rather than a reaction to new, negative information.

Positives

• The sale was conducted under a Rule 10b5-1 trading plan, indicating a pre-scheduled transaction not based on new, non-public information, which can reduce concerns about opportunistic insider selling.

Negatives

• The sale represents a reduction in direct beneficial ownership by a key insider, which can sometimes be perceived negatively by investors.

Risks

• The filing does not explicitly list general company risks; it pertains to an insider transaction. However, the sale of shares by a significant insider could be interpreted by some as a lack of confidence, though the 10b5-1 plan mitigates this.

Future Outlook

This Form 4 filing is a disclosure of an insider stock transaction and does not contain any forward-looking statements or guidance regarding the company's future performance or outlook.

Industry Context

This filing is a routine insider transaction disclosure and does not provide broader industry context or trends. It reflects an individual's portfolio management rather than a strategic company announcement.

Related Party Transactions

• The sale of shares by Michael Cannon-Brookes, a Director, 10% Owner, and Officer (CEO, Co-Founder), constitutes a related party transaction as it involves a key insider of Atlassian Corp.

Stakeholder Impact

• Shareholders: The sale reduces the beneficial ownership of a key insider, which could be viewed as a slight decrease in alignment, though the 10b5-1 plan context lessens this concern.

Key Dates

Recommendation

This Form 4 filing details a routine insider stock sale conducted under a pre-arranged 10b5-1 trading plan. Such transactions are typically for personal financial planning and do not inherently signal a change in the company's fundamentals or future prospects. Therefore, it does not provide sufficient new information to warrant a change in investment recommendation based solely on this filing.

Keywords

Atlassian, TEAM, Insider Sale, Form 4, Michael Cannon-Brookes, 10b5-1 Plan, Stock Transaction, CEO, Co-Founder, Beneficial Ownership