[Form 4] Atlassian Corp Insider Trading Activity

Rhea-AI Filing Summary

Michael Cannon-Brookes, CEO and co-founder of Atlassian Corporation (TEAM), reported multiple open-market sales of Class A common stock on 09/25/2025 executed under a Rule 10b5-1 trading plan adopted February 20, 2025. The filings show four sales totaling 7,665 shares at weighted-average prices between $160.8456 and $163.6883, with an aggregate reduction in his indirect holdings reported ending at 22,995 shares held indirectly via CBC Co Pty Limited as trustee for the Cannon-Brookes Head Trust. The transaction disclosures note execution in multiple trades and offer to provide detailed trade prices and quantities on request.

Positive

• Trades were executed under a Rule 10b5-1 trading plan, indicating prearranged, non-timed dispositions
• Filing discloses indirect ownership vehicle (CBC Co Pty Limited as trustee for the Cannon-Brookes Head Trust) and offers full trade details on request, supporting transparency

Negative

• Reported reduction in indirect holdings to 22,995 Class A shares following the transactions
• Insider sales may be perceived negatively by some investors despite being prearranged

Insights

Corporate Governance Expert

TL;DR: Insider sales were executed under a pre-arranged 10b5-1 plan, reducing indirect holdings but showing procedural compliance.

The report documents routine insider sales by the CEO via a Rule 10b5-1 plan, which typically mitigates market-timing concerns because trades are pre-authorized. The filing identifies indirect ownership through a trustee vehicle and discloses weighted-average prices and that trades occurred in multiple executions. For governance, the clarity about the plan adoption date and the offer to provide exact trade details on request are positive disclosures that support transparency.

Securities Analyst

TL;DR: Total of 7,665 shares sold on 09/25/2025 at ~ $161–$164; sales appear routine and not an unexpected disposal.

The transactions span four line items with weighted-average prices reported between $160.85 and $163.69. Aggregate proceeds (implied by share counts and prices) are modest relative to large-cap company market caps, and the filer states the trades were part of a 10b5-1 plan adopted in February 2025. From a market-impact perspective, these disclosures are informational; they document a modest reduction in reported indirect holdings down to 22,995 shares.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

1. Name and Address of Reporting Person^*

Cannon-Brookes Michael

(Last) (First) (Middle)

C/O ATLASSIAN CORPORATION

350 BUSH STREET, FLOOR 13

(Street)

SAN FRANCISCO CA 94104

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Atlassian Corp [ TEAM ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director	X	10% Owner
X	Officer (give title below)		Other (specify below)
	CEO, Co-Founder

3. Date of Earliest Transaction (Month/Day/Year)
09/25/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Class A Common Stock	09/25/2025		S(1)		2,305	D	$162.1073(2)	28,355	I	See Footnote(3)
Class A Common Stock	09/25/2025		S(1)		650	D	$163.6883(4)	27,705	I	See Footnote(3)
Class A Common Stock	09/25/2025		S(1)		450	D	$160.8456(5)	27,255	I	See Footnote(3)
Class A Common Stock	09/25/2025		S(1)		4,260	D	$162.8483(6)	22,995	I	See Footnote(3)

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on February 20, 2025.

2. This transaction was executed in multiple trades during the day at prices ranging from $161.44 to $162.43. The weighted-average price is reported above. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transactions were effected.

3. Shares are held by CBC Co Pty Limited as trustee for the Cannon-Brookes Head Trust.

4. This transaction was executed in multiple trades during the day at prices ranging from $163.45 to $163.99. The weighted-average price is reported above. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transactions were effected.

5. This transaction was executed in multiple trades during the day at prices ranging from $160.34 to $161.26. The weighted-average price is reported above. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transactions were effected.

6. This transaction was executed in multiple trades during the day at prices ranging from $162.45 to $163.43. The weighted-average price is reported above. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transactions were effected.

Remarks:

	/s /Drew Parkes, Attorney-in-Fact for Cannon-Brookes Michael	09/26/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
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FAQ

What did Michael Cannon-Brookes (TEAM) disclose on Form 4 dated 09/25/2025?

He reported four sales totaling 7,665 Class A shares executed on 09/25/2025 under a Rule 10b5-1 plan; indirect holdings reported 22,995 shares after the trades.

Were the sales by Michael Cannon-Brookes part of a prearranged plan?

Yes. The Form 4 states the transactions were effected pursuant to a Rule 10b5-1 trading plan adopted on February 20, 2025.

What price range and weighted-average prices were reported for the TEAM sales?

Execution prices ranged roughly $160.34 to $163.99 across multiple trades; weighted-average prices per line are reported between $160.8456 and $163.6883.

How many shares did Cannon-Brookes sell on 09/25/2025?

7,665 shares sold in four reported transactions (2,305; 650; 450; 4,260).

How is Cannon-Brookes’ ownership held according to the filing?

Indirectly through CBC Co Pty Limited as trustee for the Cannon-Brookes Head Trust, per the Form 4 footnote.