[Form 4] Atlassian Corp Insider Trading Activity

Rhea-AI Filing Summary

Michael Cannon-Brookes, CEO and Co-Founder of Atlassian Corporation (TEAM), reported multiple sales of Class A common stock on 09/22/2025 under a Rule 10b5-1 trading plan adopted on 02/20/2025. The filings show six separate dispositions totaling 7,665 shares executed in multiple trades at weighted-average prices disclosed per lot. Following the reported transactions, the Reporting Person beneficially owned 45,990 shares 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 09/23/2025 and indicates the sales were effected pursuant to the pre-established trading plan.

Positive

• Sales executed under a Rule 10b5-1 trading plan, indicating pre-established compliance procedures
• Full Form 4 disclosure with per-tranche weighted-average prices and an offer to provide trade details on request
• Indirect ownership disclosed (CBC Co Pty Limited as trustee for the Cannon-Brookes Head Trust), clarifying beneficial ownership

Negative

• Insider reduced holdings by 7,665 shares on 09/22/2025, lowering beneficial ownership to 45,990 shares
• Sales executed across price range from approximately $166.43 to $172.25, indicating disposals over varying market prices

Insights

Securities Analyst

TL;DR: Routine insider sales under a Rule 10b5-1 plan; transparent reporting but reduces insider stake modestly.

The transactions represent methodical disposals implemented under a documented 10b5-1 plan adopted on 02/20/2025. Total disclosed sales on 09/22/2025 equal 7,665 Class A shares executed across multiple trade blocks with weighted-average prices reported per lot. Such plans are commonly used to provide an affirmative defense to insider trading claims and to schedule liquidity. From an investor perspective, these sales are disclosure-compliant and not presented as opportunistic or single-block large trades; materiality is limited relative to total company float unless larger holdings exist outside this Form 4.

Corporate Governance Expert

TL;DR: Proper procedural steps taken: 10b5-1 plan referenced, and the Form 4 discloses indirect ownership and executor signature.

The filing clearly identifies the reporting person’s roles (CEO, Director, ~10% owner) and that shares are held indirectly via a trust. The explicit citation of the 10b5-1 plan adoption date and the attorney-in-fact signature on 09/23/2025 support governance and compliance best practices. The disclosure includes weighted-average prices per tranche and offers to provide trade details on request, which strengthens transparency. No derivative transactions or amendments are reported.

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)
09/22/2025

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	09/22/2025		S(1)		830	D	$169.262(2)	52,825	I	See Footnote(3)
Class A Common Stock	09/22/2025		S(1)		1,150	D	$171.855(4)	51,675	I	See Footnote(3)
Class A Common Stock	09/22/2025		S(1)		600	D	$167.7557(5)	51,075	I	See Footnote(3)
Class A Common Stock	09/22/2025		S(1)		556	D	$166.9953(6)	50,519	I	See Footnote(3)
Class A Common Stock	09/22/2025		S(1)		2,275	D	$170.331(7)	48,244	I	See Footnote(3)
Class A Common Stock	09/22/2025		S(1)		2,254	D	$171.0184(8)	45,990	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 $168.57 to $169.55. 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 $171.65 to $172.25. 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 $167.44 to $168.40. 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 $166.43 to $167.42. 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 $169.63 to $170.61. 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 $170.63 to $171.59. 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 /Drew Parkes, Attorney-in-Fact for Cannon-Brookes Michael	09/23/2025
	** 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 (TEAM) report on Form 4 for 09/22/2025?

The Form 4 reports six separate dispositions of Class A common stock totaling 7,665 shares sold on 09/22/2025 under a Rule 10b5-1 trading plan.

Were the sales by the TEAM reporting person part of a pre-arranged plan?

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

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

Following the reported transactions the reporting person beneficially owned 45,990 shares indirectly through CBC Co Pty Limited as trustee for the Cannon-Brookes Head Trust.

What price ranges are disclosed for the executed trades?

Footnotes disclose execution price ranges across the trades, approximately from $166.43 to $172.25 per share, with weighted-average prices reported per tranche.

Who signed the Form 4 filing for Michael Cannon-Brookes?

The Form 4 was signed by /s/ Drew Parkes, Attorney-in-Fact on 09/23/2025.