[Form 4] Atlassian Corporation 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 08/29/2025 under a pre-established Rule 10b5-1 trading plan adopted February 20, 2025. The Form 4 lists four dispositions totaling 7,665 shares sold at weighted-average prices ranging from about $177.03 to $179.83 per share. After these transactions, the reporting person beneficially owned 160,965 Class A shares held indirectly through CBC Co Pty Limited as trustee for the Cannon-Brookes Head Trust. The filing is executed by an attorney-in-fact and discloses that the sales were effected in multiple trades during the day with price ranges noted in the footnotes.

Positive

• Transactions were conducted under a Rule 10b5-1 trading plan, adopted February 20, 2025, indicating pre-planned sales
• Full disclosure of weighted-average prices and intra-day price ranges is provided in the footnotes
• Filing identifies indirect ownership structure (CBC Co Pty Limited as trustee for the Cannon-Brookes Head Trust) enhancing transparency

Negative

• Insider sold a total of 7,665 Class A shares on 08/29/2025, reducing beneficial ownership to 160,965 shares
• Dispositions by the CEO and ~10% owner represent a measurable reduction in insider-held shares, which some investors may interpret negatively

Insights

Financial Analyst

TL;DR: The CEO executed planned sales of 7,665 shares via a 10b5-1 plan, modestly reducing indirect holdings to 160,965 shares.

The transactions were disclosed transparently with weighted-average prices and intra-day price ranges provided. Sales executed under a 10b5-1 plan reduce concerns about opportunistic timing but still represent a reduction in beneficial ownership by the company's largest insider. For investors, the dollar value of the trades (roughly mid-$177–$180 per share) is explicit in the filing; however, the filing does not provide the total dollar proceeds or the percentage change in ownership relative to total outstanding shares, so materiality to market capitalization cannot be judged from this form alone.

Corporate Governance Expert

TL;DR: Sales were executed pursuant to a disclosed 10b5-1 plan, which strengthens procedural compliance but still reduces insider stake.

The filing clearly states the 10b5-1 plan adoption date and identifies indirect ownership via a trustee, which helps satisfy disclosure and governance norms. The attorney-in-fact signature and footnoted price ranges increase transparency. The filing does not indicate any amendments or other contemporaneous transactions beyond those listed, and it documents the reporting person’s roles (CEO, Director, ~10% owner), which is relevant for interpreting the governance impact of the ownership change.

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)
08/29/2025

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	08/29/2025		S(1)		150	D	$179.8333(2)	168,480	I	See Footnote(3)
Class A Common Stock	08/29/2025		S(1)		2,991	D	$178.0382(4)	165,489	I	See Footnote(3)
Class A Common Stock	08/29/2025		S(1)		1,351	D	$178.9998(5)	164,138	I	See Footnote(3)
Class A Common Stock	08/29/2025		S(1)		3,173	D	$177.0306(6)	160,965	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 $179.66 to $180.05. 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 $177.62 to $178.60. 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 $178.62 to $179.59. 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.

6. This transaction was executed in multiple trades during the day at prices ranging from $176.60 to $177.57. 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	08/29/2025
	** 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 Atlassian CEO Michael Cannon-Brookes report on Form 4 (TEAM)?

He reported multiple sales of Class A common stock on 08/29/2025 executed under a Rule 10b5-1 trading plan adopted on February 20, 2025.

How many shares did Michael Cannon-Brookes sell and at what prices?

The Form 4 lists four dispositions totaling 7,665 shares with weighted-average prices reported as $179.8333, $178.0382, $178.9998, and $177.0306 per share; footnotes give intra-day price ranges.

What is Michael Cannon-Brookes' beneficial ownership after the sales?

After the reported transactions, the filing shows he beneficially owned 160,965 Class A shares held indirectly through CBC Co Pty Limited as trustee for the Cannon-Brookes Head Trust.

Were the sales part of a pre-arranged plan?

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

What roles does the reporting person hold at Atlassian?

The form identifies Michael Cannon-Brookes as CEO, Co-Founder, Director and a 10% owner of the issuer.