[Form 4] Atlassian Corporation Insider Trading Activity

Rhea-AI Filing Summary

Atlassian director and co-founder Michael Cannon-Brookes reported multiple open-market sales of Class A common stock on 09/10/2025 executed under a Rule 10b5-1 trading plan adopted on 02/20/2025. The Form 4 shows a series of disposals totaling 7,665 shares executed in multiple trades at weighted-average prices ranging from about $173.86 to $181.8563 across the reported transactions. After these sales, the reporting person beneficially owned 107,310 Class A shares indirectly through CBC Co Pty Limited as trustee for the Cannon-Brookes Head Trust.

Positive

• Trades executed under a Rule 10b5-1 plan, indicating pre-established, documented trading instructions
• Reporting fully discloses multiple tranches with weighted-average prices and post-transaction beneficial ownership

Negative

• Aggregate sale of 7,665 Class A shares on 09/10/2025, reducing beneficial holdings
• Beneficial ownership decreased to 107,310 Class A shares following the reported transactions

Insights

Financial Analyst

TL;DR: Insiders sold 7,665 TEAM shares via a pre-established 10b5-1 plan; ownership remains substantial at 107,310 Class A shares.

These sales were executed pursuant to a Rule 10b5-1 plan, which typically reduces concerns about opportunistic timing and indicates the disposals were preplanned. The filing lists weighted-average prices for each tranche, showing execution across a narrow price band on 09/10/2025. Because the report documents indirect holdings through a trustee, the sales reflect a managed reduction rather than an outright liquidation of direct holdings. Impact on outstanding float and control appears limited based on the remaining beneficial holdings disclosed here.

Corporate Governance Expert

TL;DR: Sales followed a documented 10b5-1 plan, demonstrating compliance with insider trading procedures while reducing beneficial holdings modestly.

The Form 4 explicitly states the trades were effected under a 10b5-1 plan adopted 02/20/2025 and identifies indirect beneficial ownership via CBC Co Pty Limited as trustee for the Cannon-Brookes Head Trust. The report is signed by an attorney-in-fact, consistent with authorized execution. From a governance perspective, the disclosure meets Section 16 requirements and provides transparency on timing, volumes, and weighted-average prices for each tranche.

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)
09/10/2025

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	09/10/2025		S(1)		400	D	$181.8563(2)	114,575	I	See Footnote(3)
Class A Common Stock	09/10/2025		S(1)		2,651	D	$175.7832(4)	111,924	I	See Footnote(3)
Class A Common Stock	09/10/2025		S(1)		200	D	$178.2975(5)	111,724	I	See Footnote(3)
Class A Common Stock	09/10/2025		S(1)		2,131	D	$173.86(6)	109,593	I	See Footnote(3)
Class A Common Stock	09/10/2025		S(1)		350	D	$180.7825(7)	109,243	I	See Footnote(3)
Class A Common Stock	09/10/2025		S(1)		100	D	$179.2563(8)	109,143	I	See Footnote(3)
Class A Common Stock	09/10/2025		S(1)		1,583	D	$174.895(9)	107,560	I	See Footnote(3)
Class A Common Stock	09/10/2025		S(1)		250	D	$177.016(10)	107,310	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 $181.65 to $182.11. 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 $175.33 to $176.21. 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.

5. This transaction was executed in multiple trades during the day at prices ranging from $177.77 to $178.57. 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 $173.33 to $174.32. 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 $180.58 to $181.21. 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.

8. This transaction was executed in multiple trades during the day at prices ranging from $178.81 to $179.72. 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.

9. This transaction was executed in multiple trades during the day at prices ranging from $174.33 to $175.32. 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.

10. This transaction was executed in multiple trades during the day at prices ranging from $176.61 to $177.23. 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.

Remarks:

	/s /Drew Parkes, Attorney-in-Fact for Cannon-Brookes Michael	09/11/2025
	** 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 TEAM shares did Michael Cannon-Brookes sell on 09/10/2025?

The Form 4 reports sales totaling 7,665 Class A shares executed on 09/10/2025.

Were the sales by Michael Cannon-Brookes part of a 10b5-1 plan?

Yes. The filing states the transactions were effected pursuant to a Rule 10b5-1 trading plan adopted on 02/20/2025.

What prices were reported for the sales?

The form lists weighted-average prices for tranches ranging approximately from $173.86 to $181.8563.

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

After the reported sales the reporting person beneficially owned 107,310 Class A shares indirectly.

Through what vehicle are the remaining shares held?

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