[Form 4] Atlassian Corp Insider Trading Activity

Rhea-AI Filing Summary

Atlassian Corporation (TEAM) reported insider dispositions by Michael Cannon-Brookes on 10/10/2025. The report shows five sales executed under a Rule 10b5-1 trading plan totaling 7,665 shares of Class A common stock, reducing indirect holdings reported through CBC Co Pty Limited to 429,240 shares after the transactions. Individual trade weighted-average prices ranged from $144.8955 to $148.9011, with the largest single-day block of 4,099 shares sold at a weighted-average price of $144.8955. The transactions were effected in multiple intraday trades and were executed pursuant to a trading plan adopted on 2/20/2025.

Positive

• Transactions executed under a Rule 10b5-1 plan, indicating pre-scheduled trades
• Reporting person retains substantial indirect holdings (reported 429,240 shares after sales)

Negative

• Insider disposition of 7,665 shares could be interpreted by some investors as reduced insider ownership
• Multiple sales across intraday trades at varying weighted-average prices may attract investor attention

Insights

Corporate Governance Analyst

Insider sales were executed under a pre-established 10b5-1 plan, reducing indirect holdings.

The sales totaling 7,665 shares were reported as indirect holdings held by CBC Co Pty Limited for a trust, and the filer checked the box confirming transactions were made under a Rule 10b5-1 plan adopted on 2/20/2025. That structure signals the trades were pre-scheduled rather than opportunistic, which is a common governance mechanism to avoid perceptions of opportunistic timing.

Dependence on plan parameters and blocking windows matters; investors can monitor future Form 4s for any changes to reported holdings or new plan disclosures over the next 6-12 months.

Equity Markets Strategist

Sale size is small relative to public float but notable for ownership change at the trust level.

The aggregate sale of 7,665 shares at weighted-average prices between $144.90 and $148.90 reduced reported indirect holdings to 429,240 shares. For a large-cap software company, this volume is unlikely to materially affect market liquidity or valuation on its own.

Market impact is limited absent further similar filings; watch subsequent weekly Form 4 filings and any disclosures affecting insider share counts over the next 1-3 months.

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
Estimated average burden
hours per response:			0.5

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

X

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

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)
10/10/2025

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	10/10/2025		S(1)		750	D	$146.7775(2)	436,155	I	See Footnote(3)
Class A Common Stock	10/10/2025		S(1)		1,016	D	$147.8422(4)	435,139	I	See Footnote(3)
Class A Common Stock	10/10/2025		S(1)		1,350	D	$145.7227(5)	433,789	I	See Footnote(3)
Class A Common Stock	10/10/2025		S(1)		4,099	D	$144.8955(6)	429,690	I	See Footnote(3)
Class A Common Stock	10/10/2025		S(1)		450	D	$148.9011(7)	429,240	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 $146.38 to $147.31. 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 $147.39 to $148.34. 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 $145.38 to $146.27. 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 $144.36 to $145.29. 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.

7. This transaction was executed in multiple trades during the day at prices ranging from $148.47 to $149.34. 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/ Veena Bhatia, Attorney-in-Fact for Cannon-Brookes Michael	10/10/2025
	** 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.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What did the Atlassian insider (TEAM) report on 10/10/2025?

The report shows Michael Cannon-Brookes sold a total of 7,665 Class A shares on 10/10/2025 under a Rule 10b5-1 trading plan.

Were these trades part of a pre-established trading plan for TEAM insiders?

Yes. The transactions were effected pursuant to a Rule 10b5-1 plan adopted by the reporting person on 2/20/2025.

What weighted-average prices were reported for the TEAM share sales?

Weighted-average prices for the reported trades ranged from $144.8955 to $148.9011.

How many shares did the reporting person hold after these transactions for TEAM?

The report lists 429,240 indirect shares beneficially owned following the reported transactions.

Who holds the reported shares indirectly for the Atlassian insider?

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