[Form 4] Atlassian Corporation Insider Trading Activity

Rhea-AI Filing Summary

Atlassian director and 10% owner Michael Cannon-Brookes sold multiple blocks of Class A common stock on 09/03/2025 under a Rule 10b5-1 plan adopted February 20, 2025. Reported disposals total 7,665 shares across four transactions at weighted-average prices ranging from $170.5754 to $173.22 per share. After these sales, the filing reports 148,687 shares beneficially owned following the largest individual reported sale and 145,635 shares after the final reported sale on that date, with ownership held indirectly through CBC Co Pty Limited as trustee for the Cannon-Brookes Head Trust. The Form 4 was signed by an attorney-in-fact on 09/04/2025.

Positive

• Sales were executed under a Rule 10b5-1 trading plan adopted February 20, 2025, which provides an affirmative defense to insider trading claims
• Filer provides weighted-average prices and commits to disclose trade-level details upon request, supporting transparency

Negative

• Insider disposed of 7,665 Class A shares on 09/03/2025, which represents insider selling activity
• Beneficial ownership decreased to reported balances of 148,687 and 145,635 shares following the reported transactions

Insights

Corporate Governance Expert

TL;DR: Director used a pre-established 10b5-1 plan to sell shares, signaling routine liquidity rather than ad hoc insider trading.

The filing explicitly states the sales were effected pursuant to a Rule 10b5-1 trading plan adopted on February 20, 2025, which provides an affirmative defense to insider trading claims when properly structured and followed. Sales were executed in multiple trades on 09/03/2025 at varying prices with weighted-average prices disclosed for several blocks. Ownership remains indirect through a trustee structure. From a governance perspective, pre-arranged plan usage reduces regulatory and governance concerns compared with opportunistic sales, provided the plan terms were compliant and no contemporaneous material nonpublic information existed at adoption or execution.

Securities Analyst

TL;DR: Insider disposals of 7,665 Class A shares were disclosed; transaction details are transparent but do not by themselves indicate company performance.

The Form 4 lists four sell transactions on 09/03/2025 totaling 7,665 shares with reported weighted-average prices between $170.5754 and $173.22. The filer commits to provide trade-by-trade details on request, which supports transparency. The filing shows remaining beneficial ownership figures after each reported block, and the shares are held indirectly via CBC Co Pty Limited as trustee for the Cannon-Brookes Head Trust. For investors, these are insider liquidity events documented under Section 16; they do not include operational or earnings information and therefore should not be conflated with company performance metrics.

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)
09/03/2025

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	09/03/2025		S(1)		3,863	D	$170.5754(2)	149,437	I	See Footnote(3)
Class A Common Stock	09/03/2025		S(1)		700	D	$172.3437(4)	148,737	I	See Footnote(3)
Class A Common Stock	09/03/2025		S(1)		50	D	$173.22	148,687	I	See Footnote(3)
Class A Common Stock	09/03/2025		S(1)		3,052	D	$171.5514(5)	145,635	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 $170.06 to $171.05. 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.

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 $172.07 to $172.88. 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 $171.06 to $172.05. 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.

Remarks:

	/s/ Veena Bhatia, Attorney-in-Fact for Cannon-Brookes Michael	09/04/2025
	** 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 the Form 4 for TEAM?

The Form 4 reports that Michael Cannon-Brookes sold multiple blocks of Class A common stock on 09/03/2025 under a Rule 10b5-1 plan.

How many TEAM shares were sold and at what prices?

The filing lists four reported disposals totaling 7,665 shares with weighted-average prices reported between $170.5754 and $173.22 per share.

When was the 10b5-1 plan adopted for these sales?

The Form 4 states the Rule 10b5-1 trading plan was adopted on February 20, 2025.

How are the shares held according to the filing?

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

Who signed the Form 4 and when?

The Form 4 was signed by Veena Bhatia, Attorney-in-Fact for Michael Cannon-Brookes on 09/04/2025.