[Form 4] Atlassian Corporation Insider Trading Activity

Rhea-AI Filing Summary

Michael Cannon-Brookes, director, CEO and 10% owner of Atlassian Corporation (TEAM), reported multiple open-market dispositions of Class A common stock on 08/27/2025 effected under a Rule 10b5-1 trading plan adopted February 20, 2025. The filing lists six sales totaling 7,665 shares at weighted-average prices shown per lot, leaving the reporting person with 176,295 shares beneficially owned on an indirect basis (held by CBC Co Pty Limited as trustee for the Cannon-Brookes Head Trust). Each sale is disclosed with price ranges and weighted-average prices and the Form is signed by an attorney-in-fact on 08/28/2025.

Positive

• Transactions executed under a Rule 10b5-1 trading plan, providing preclearance and affirmative defense documentation
• Clear disclosure of indirect ownership vehicle (CBC Co Pty Limited as trustee for the Cannon-Brookes Head Trust), supporting transparency

Negative

• Insider disposed of 7,665 Class A shares on 08/27/2025, reducing beneficial holdings
• Multiple sales at varying prices could be perceived by some investors as reduced insider exposure despite continued material ownership

Insights

Securities Analyst

TL;DR: Insider sold 7,665 TEAM shares under a pre-existing 10b5-1 plan; holdings remain material at 176,295 shares indirect.

The Form 4 details routine, preplanned dispositions under a Rule 10b5-1 plan, reducing indirect beneficial ownership from prior levels to 176,295 shares. Sales were executed across multiple trades with disclosed weighted-average prices per lot and accompanying price ranges. From an investor-monitoring perspective, these transactions are transparency-positive because they were made pursuant to a documented trading plan; they do not by themselves provide information about company fundamentals. The filing includes clear identification of the holder vehicle (CBC Co Pty Limited as trustee) and shows continued substantial indirect ownership.

Corporate Governance Expert

TL;DR: Sales follow an established 10b5-1 plan, indicating governance-compliant insider liquidity rather than opportunistic trading.

The reporting person disclosed that the transactions were effected pursuant to a Rule 10b5-1 plan adopted on February 20, 2025, which provides affirmative defense credentials for preplanned trades. The Form names the trust and trustee holding the shares and is signed by an attorney-in-fact, reflecting adherence to disclosure and signature requirements. While the insider remains a significant holder, the filing documents liquidation activity consistent with accepted governance practices rather than unplanned insider activity.

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)
08/27/2025

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	08/27/2025		S(1)		50	D	$166.21	183,910	I	See Footnote(2)
Class A Common Stock	08/27/2025		S(1)		100	D	$168.555(3)	183,810	I	See Footnote(2)
Class A Common Stock	08/27/2025		S(1)		2,961	D	$171.8746(4)	180,849	I	See Footnote(2)
Class A Common Stock	08/27/2025		S(1)		450	D	$167.7672(5)	180,399	I	See Footnote(2)
Class A Common Stock	08/27/2025		S(1)		3,854	D	$171.14(6)	176,545	I	See Footnote(2)
Class A Common Stock	08/27/2025		S(1)		250	D	$170.25(7)	176,295	I	See Footnote(2)

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

3. This transaction was executed in multiple trades during the day at prices ranging from $168.46 to $168.65. 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.

4. This transaction was executed in multiple trades during the day at prices ranging from $171.61 to $172.50. 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 $167.34 to $168.31. 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.

6. This transaction was executed in multiple trades during the day at prices ranging from $170.61 to $171.60. 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 $169.61 to $170.59. 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	08/28/2025
	** 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 Michael Cannon-Brookes report on Form 4 for TEAM?

He reported multiple dispositions of 7,665 Class A shares sold on 08/27/2025 under a Rule 10b5-1 trading plan.

Were the sales preplanned or ad hoc according to the filing?

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

How many TEAM shares does the reporting person beneficially own after the transactions?

The Form 4 reports 176,295 shares beneficially owned on an indirect basis following the sales.

Who holds the shares on behalf of the reporting person?

Shares are held by CBC Co Pty Limited as trustee for the Cannon-Brookes Head Trust, per the Form 4 footnote.

Are price details for the sales provided?

Yes; each lot shows a weighted-average price and disclosed intraday price ranges (examples: weighted averages of $166.21, $168.555, $171.8746, among others).