[Form 4] Atlassian Corporation Insider Trading Activity

Rhea-AI Filing Summary

Michael Cannon-Brookes, Atlassian Corp (TEAM) CEO and 10% owner, reported multiple sales of Class A common stock on 08/19/2025 executed under a Rule 10b5-1 trading plan adopted on 02/20/2025. The filings show five separate dispositions totaling 7,665 shares at weighted-average prices ranging from $166.0904 to $169.83 per share, with per-lot execution ranges disclosed in footnotes. After these transactions, beneficial ownership is reported indirectly at 224,635, 224,485, 223,135, 222,635, and 222,285 shares across the reported lines, held by CBC Co Pty Limited as trustee for the Cannon-Brookes Head Trust. The Form 4 was signed by an attorney-in-fact on 08/20/2025.

Positive

• Transactions executed under a Rule 10b5-1 trading plan, adopted 02/20/2025, indicating pre-planned, compliant sales
• Detailed execution ranges and weighted-average prices provided in footnotes, enhancing disclosure transparency
• Beneficial ownership disclosed as held indirectly by CBC Co Pty Limited as trustee, clarifying ownership structure

Negative

• Insider sold a total of 7,665 shares on 08/19/2025, which constitutes insider liquidity
• Reported beneficial ownership decreased across the reported lines (from 224,635 down to 222,285 on different lines)

Insights

Securities Analyst

TL;DR: Routine insider dispositions under a Rule 10b5-1 plan; transaction sizes are modest relative to institutional stakes.

The report documents multiple small block sales by a principal insider executed pursuant to a pre-established 10b5-1 plan adopted on 02/20/2025. The weighted-average prices per lot are provided and range between approximately $166.09 and $169.83. The sales are recorded as indirect holdings via CBC Co Pty Limited as trustee for the Cannon-Brookes Head Trust. From a market-impact perspective, these appear to be orderly plan-driven sales rather than ad hoc dispositions.

Corporate Governance Expert

TL;DR: Proper disclosure and use of a 10b5-1 plan reduce governance concerns but signal insider liquidity.

The filing clearly states the trades were effected pursuant to a Rule 10b5-1 plan, which provides an affirmative defense against insider trading claims when conditions are met. The presence of an attorney-in-fact signature and detailed execution price ranges in footnotes supports compliance and transparency. Nonetheless, repeated sales by a top insider warrant monitoring for any change in ownership trends.

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)
08/19/2025

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	08/19/2025		S(1)		5,315	D	$166.0904(2)	224,635	I	See Footnote(3)
Class A Common Stock	08/19/2025		S(1)		150	D	$169.83(4)	224,485	I	See Footnote(3)
Class A Common Stock	08/19/2025		S(1)		1,350	D	$169.3253(5)	223,135	I	See Footnote(3)
Class A Common Stock	08/19/2025		S(1)		500	D	$166.8462(6)	222,635	I	See Footnote(3)
Class A Common Stock	08/19/2025		S(1)		350	D	$168.1681(7)	222,285	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 $165.51 to $166.47. 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 $169.79 to $169.90. 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 $168.76 to $169.73. 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 $166.54 to $167.49. 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 $167.75 to $168.63. 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	08/20/2025
	** 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 sell in the Form 4 for TEAM?

He reported multiple sales of Class A common stock totaling 7,665 shares on 08/19/2025.

Were the TEAM sales part of a trading plan?

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

What prices were the TEAM shares sold at?

Weighted-average prices per reported lot range from $166.0904 to $169.83, with execution ranges disclosed in footnotes.

How many TEAM shares does Cannon-Brookes beneficially own after these transactions?

The Form 4 reports indirect beneficial ownership by the trust at figures including 224,635, 224,485, 223,135, 222,635, and 222,285 across the reported lines.

Who holds the reported TEAM shares on behalf of Cannon-Brookes?

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