[Form 4] Atlassian Corp Insider Trading Activity

Rhea-AI Filing Summary

Michael Cannon-Brookes, Atlassian Corp (TEAM) CEO, co‑founder, director and >10% owner, reported insider sales under a Rule 10b5‑1 plan executed on 09/19/2025. The Form 4 shows three non‑derivative dispositions totaling 7,665 Class A shares sold in multiple trades at weighted‑average prices of $171.063, $169.0488 and $169.8469. Following those transactions the beneficial ownership reported for the related holdings is 60,970, 55,374 and 53,655 shares, respectively, with the shares held indirectly by CBC Co Pty Limited as trustee for the Cannon‑Brookes Head Trust. The filing is signed by an attorney‑in‑fact on 09/22/2025. The reporting person states the trades were effected pursuant to a 10b5‑1 trading plan adopted on 02/20/2025 and offers to provide trade‑level details upon request.

Positive

• Transactions executed under a Rule 10b5‑1 plan adopted on 02/20/2025, indicating pre‑arranged selling instructions
• Reporter retained material indirect ownership after the disposals (post‑transaction counts of 60,970; 55,374; 53,655 shares)
• Weighted‑average prices disclosed and the reporter offers to provide full trade‑level details on request, improving transparency

Negative

• None.

Insights

Securities Analyst

TL;DR: Insider sales of 7,665 shares were executed under a pre‑arranged 10b5‑1 plan; remaining indirect holdings remain sizable.

The reported transactions are disposals only and were executed pursuant to a Rule 10b5‑1 trading plan dated 02/20/2025, which signals pre‑planned sales rather than opportunistic transactions disclosed contemporaneously. The filing discloses weighted‑average prices for three tranches and provides post‑transaction beneficial ownership counts held indirectly through a trust vehicle. From a market‑impact perspective, the absolute share count sold (7,665) is disclosed and the reporting person retains material indirect holdings as shown. The reporting person’s offer to provide detailed trade execution data on request increases transparency for interested parties.

Corporate Governance Expert

TL;DR: Sales were executed under an established 10b5‑1 plan; reporting follows Section 16 disclosure requirements.

The Form 4 indicates compliance with Section 16 reporting: the reporter checked the box indicating the transactions were made under a Rule 10b5‑1 plan and the form is signed by an attorney‑in‑fact. The filing identifies the reporter’s roles (CEO, co‑founder, director, >10% owner) and specifies indirect ownership through a trustee. The disclosure of weighted‑average prices and the willingness to provide detailed trade information on request are consistent with good governance and disclosure practices for insider trading activity.

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)
09/19/2025

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	09/19/2025		S(1)		350	D	$171.063(2)	60,970	I	See Footnote(3)
Class A Common Stock	09/19/2025		S(1)		5,596	D	$169.0488(4)	55,374	I	See Footnote(3)
Class A Common Stock	09/19/2025		S(1)		1,719	D	$169.8469(5)	53,655	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 $170.80 to $171.55. 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 $168.53 to $169.52. 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 $169.53 to $170.29. 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	09/22/2025
	** 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 Atlassian (TEAM) shares did Michael Cannon‑Brookes sell on 09/19/2025?

He disposed of a total of 7,665 Class A shares across three reported transactions on 09/19/2025.

At what prices were the TEAM shares sold by Michael Cannon‑Brookes?

The weighted‑average prices reported were $171.063, $169.0488, and $169.8469 for the three tranches.

Were the sales by Michael Cannon‑Brookes part of a pre‑arranged trading plan?

Yes. The Form 4 states the transactions were effected pursuant to a Rule 10b5‑1 trading plan adopted on 02/20/2025.

How does Michael Cannon‑Brookes hold the remaining shares reported?

The shares are held indirectly by CBC Co Pty Limited as trustee for the Cannon‑Brookes Head Trust.

When was this Form 4 signed and filed?

The form is signed by an attorney‑in‑fact on 09/22/2025 and reports transactions dated 09/19/2025.