[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 09/09/2025 executed pursuant to a Rule 10b5-1 trading plan adopted on February 20, 2025. The Form 4 lists seven separate sale entries with individual quantities sold (ranging from 50 to 2,820 shares) at weighted-average prices between approximately $175.82 and $182.46. Shares are held indirectly through CBC Co Pty Limited as trustee for the Cannon-Brookes Head Trust. Following the reported transactions the filing shows an indirect beneficial ownership position reported as 114,975 Class A shares (based on the last line reported).

Positive

• Sales executed under a Rule 10b5-1 plan, indicating pre-planned transactions and regulatory compliance
• Timely and detailed disclosure of quantities, weighted-average prices, and indirect ownership through a trustee

Negative

• Insider selling by a >10% owner and CEO could be interpreted negatively by some investors
• Beneficial ownership decreased from prior reported levels to 114,975 Class A shares as shown in the filing

Insights

Financial Analyst

TL;DR: Routine, pre-planned insider sales under a 10b5-1 plan; no new material corporate disclosure or operational change.

The transaction pattern on this Form 4 indicates multiple sales executed on a single date under an existing 10b5-1 plan adopted February 20, 2025. The weighted-average sale prices reported range roughly from $175.82 to $182.46, and the quantities are modest relative to large institutional positions. Because the sales were effected pursuant to a pre-established plan and the filing discloses continued indirect ownership via a trust, this appears to be a liquidity event by a significant shareholder rather than a company-specific operational signal. Market impact would depend on total outstanding float and trading volume on the execution date; the filing itself does not provide those market context metrics.

Corporate Governance Expert

TL;DR: Insider complied with disclosure and used a 10b5-1 plan; governance processes appear followed based on the filing.

The Form 4 clearly identifies the reporting person as a director, officer and >10% owner and cites a Rule 10b5-1 trading plan, which provides an affirmative defense to insider trading allegations if properly adopted and followed. The filing also specifies shares are held indirectly through a trustee, and it includes attestations regarding aggregated trades executed at varying intra-day prices. From a governance standpoint, the document shows timely disclosure and the use of an established trading vehicle, consistent with common best practices for executives needing liquidity while managing insider trading risk. The filing does not disclose any change in role, compensation, or company governance actions.

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)
09/09/2025

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	09/09/2025		S(1)		50	D	$175.82	122,590	I	See Footnote(2)
Class A Common Stock	09/09/2025		S(1)		2,355	D	$180.6766(3)	120,235	I	See Footnote(2)
Class A Common Stock	09/09/2025		S(1)		435	D	$178.678(4)	119,800	I	See Footnote(2)
Class A Common Stock	09/09/2025		S(1)		1,000	D	$181.5525(5)	118,800	I	See Footnote(2)
Class A Common Stock	09/09/2025		S(1)		2,820	D	$179.8636(6)	115,980	I	See Footnote(2)
Class A Common Stock	09/09/2025		S(1)		905	D	$182.4647(7)	115,075	I	See Footnote(2)
Class A Common Stock	09/09/2025		S(1)		100	D	$177.25(8)	114,975	I	See Footnote(2)

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

3. This transaction was executed in multiple trades during the day at prices ranging from $180.18 to $181.17. 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.

4. This transaction was executed in multiple trades during the day at prices ranging from $178.15 to $179.13. 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 $181.18 to $182.16. 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 $179.15 to $180.12. 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 $182.19 to $182.79. 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 $177.05 to $177.45. 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	09/10/2025
	** 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 filing reports multiple sales of Class A common stock on 09/09/2025 executed under a 10b5-1 trading plan adopted February 20, 2025.

How many shares did Cannon-Brookes hold after the reported transactions?

The Form 4 shows an indirect beneficial ownership position of 114,975 Class A shares following the reported sales.

At what prices were the shares sold?

Reported weighted-average prices range from approximately $175.82 to $182.46 across the multiple trades on that date.

Were the trades part of an automated plan or discretionary trades?

They were effected pursuant to a Rule 10b5-1 trading plan adopted on February 20, 2025, per the Form 4 remarks.

Through what vehicle are the shares held?

Shares are held by CBC Co Pty Limited as trustee for the Cannon-Brookes Head Trust, indicating indirect ownership.