[Form 4] Atlassian Corporation Insider Trading Activity

Rhea-AI Filing Summary

Atlassian Corporation (NASDAQ: TEAM) – Form 4 insider transaction

On 18 June 2025, Co-Founder, Co-CEO, Director and 10% owner Michael Cannon-Brookes reported the sale of 7,665 Class A common shares under a Rule 10b5-1 trading plan adopted on 20 February 2025. The shares were sold in five price tranches ranging from $194.03 to $199.22 with weighted-average prices disclosed for each tranche:

• 758 shares at $194.4969
• 3,072 shares at $195.8522
• 1,992 shares at $196.7360
• 1,393 shares at $197.6799
• 450 shares at $198.5844

Total estimated proceeds are roughly $1.5 million (7,665 shares × ≈$196 average). The shares were held indirectly through CBC Co Pty Limited as trustee for the Cannon-Brookes Head Trust. Following the sales, Cannon-Brookes’ indirect holding disclosed in this trust declined to 53,655 Class A shares.

No derivative transactions were reported and no changes were disclosed in direct holdings. As the trades were pre-scheduled, they carry less signalling weight than discretionary sales, yet investors often view any insider disposition by a key executive and major shareholder as a modestly negative sentiment indicator, especially when the company is led by a dual-CEO/founder structure.

Positive

• None.

Negative

• Founder/Co-CEO sold 7,665 Class A shares (~$1.5 m), reducing indirect holdings to 53,655 shares; insider sales often viewed as a minor bearish signal.

Insights

Financial Analyst

TL;DR: Founder CEO sold 7,665 shares (~$1.5 m) via 10b5-1 plan; modest size, neutral valuation signal.

The transaction represents less than 0.15% of Cannon-Brookes’ reported indirect trust position (53,655 shares) and an immaterial slice of his presumed overall stake in Atlassian. Proceeds around $1.5 million appear routine for liquidity or diversification. Because sales were executed under a pre-arranged 10b5-1 plan, timing is unlikely driven by near-term information asymmetry. From a valuation standpoint, the magnitude is too small to affect float or supply dynamics, and no accompanying fundamental disclosures were made. I therefore view the market impact as neutral.

Corporate Governance Expert

TL;DR: Insider disposition by dual-CEO/founder is a mild governance negative despite 10b5-1 protection.

Even with a 10b5-1 plan, investors scrutinise founder sales because they can signal reduced long-term conviction. Although the volume is minor, Cannon-Brookes is a 10% owner and key strategic leader; cumulative selling patterns matter for governance assessments. The filing shows continuing significant ownership (53,655 shares in the named trust), yet any reduction can raise questions about alignment, especially amid ongoing equity-compensation dilution. Overall governance impact is slightly negative, but not materially disruptive.

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)
06/18/2025

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	06/18/2025		S(1)		758	D	$194.4969(2)	60,562	I	See Footnote(3)
Class A Common Stock	06/18/2025		S(1)		3,072	D	$195.8522(4)	57,490	I	See Footnote(3)
Class A Common Stock	06/18/2025		S(1)		1,992	D	$196.736(5)	55,498	I	See Footnote(3)
Class A Common Stock	06/18/2025		S(1)		1,393	D	$197.6799(6)	54,105	I	See Footnote(3)
Class A Common Stock	06/18/2025		S(1)		450	D	$198.5844(7)	53,655	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 $194.03 to $195.00. 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 $195.24 to $196.23. 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 $196.24 to $197.21. 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 $197.24 to $198.23. 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 $198.24 to $199.22. 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	06/18/2025
	** 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

How many Atlassian (TEAM) shares did Michael Cannon-Brookes sell on 18 June 2025?

He sold 7,665 Class A common shares across five transactions.

What price range were the Atlassian shares sold at?

Weighted-average prices ranged from $194.4969 to $198.5844, with trades executed between $194.03 and $199.22.

Was the sale executed under a Rule 10b5-1 plan?

Yes. The filing states the trades were carried out under a Rule 10b5-1 plan adopted on 20 February 2025.

How many Atlassian shares does the trust still hold after the sale?

Post-transaction, the trust beneficially owns 53,655 Class A shares.

Does the Form 4 report any derivative security activity?

No. Table II is empty; no options or other derivatives were exercised or disposed of.