Atlassian (TEAM) CEO Cannon-Brookes reports insider share sales via trust

Rhea-AI Filing Summary

Atlassian Corp insider trading report: On December 17, 2025, Atlassian Corp CEO, Co‑Founder, Director and 10% owner Michael Cannon‑Brookes reported multiple open‑market sales of the company’s Class A Common Stock. The transactions were made indirectly through CBC Co Pty Limited as trustee for the Cannon‑Brookes Head Trust.

The reported sales included blocks of 532, 3,276, 856, 1,075 and 1,926 shares at weighted‑average prices of $165.364, $162.5644, $161.8651, $164.3849 and $163.4612, respectively. Each price reflects multiple trades executed in intraday ranges disclosed in the footnotes.

The filing states that these transactions were effected under a Rule 10b5‑1 trading plan adopted on February 20, 2025. Following the reported sales, the trust beneficially owned 68,985 Atlassian Class A 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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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)
12/17/2025

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	12/17/2025		S(1)		532	D	$165.364(2)	76,118	I	See Footnote(3)
Class A Common Stock	12/17/2025		S(1)		3,276	D	$162.5644(4)	72,842	I	See Footnote(3)
Class A Common Stock	12/17/2025		S(1)		856	D	$161.8651(5)	71,986	I	See Footnote(3)
Class A Common Stock	12/17/2025		S(1)		1,075	D	$164.3849(6)	70,911	I	See Footnote(3)
Class A Common Stock	12/17/2025		S(1)		1,926	D	$163.4612(7)	68,985	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 $165.08 to $165.55. 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 $162.06 to $163.05. 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 $161.05 to $162.01. 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 $164.08 to $165.07. 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 $163.06 to $164.01. 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	12/18/2025
	** 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.
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FAQ

What insider transaction did Atlassian (TEAM) report in this filing?

The filing reports that CEO, Co‑Founder, Director and 10% owner Michael Cannon‑Brookes sold multiple blocks of Atlassian Class A Common Stock on December 17, 2025 through a trust.

How many Atlassian (TEAM) shares did Michael Cannon-Brookes sell in each reported trade?

The reported trades involved 532, 3,276, 856, 1,075 and 1,926 Class A shares, each recorded as a separate sale transaction.

What prices did the Atlassian (TEAM) insider receive for the sold shares?

Weighted‑average sale prices were $165.364, $162.5644, $161.8651, $164.3849 and $163.4612, with each average based on multiple trades within stated intraday price ranges.

Was the Atlassian (TEAM) insider sale made under a Rule 10b5-1 plan?

Yes. The filing states that the transactions were effected pursuant to a Rule 10b5‑1 trading plan adopted by the reporting person on February 20, 2025.

How are the sold Atlassian (TEAM) shares held for Michael Cannon-Brookes?

The shares are held indirectly by CBC Co Pty Limited as trustee for the Cannon‑Brookes Head Trust, which is identified in the footnotes.

How many Atlassian (TEAM) shares did the reporting person still beneficially own after these trades?

After the reported sales, the trust beneficially owned 68,985 shares of Atlassian Class A Common Stock.