[Form 4] Atlassian Corporation Insider Trading Activity

Rhea-AI Filing Summary

Atlassian Corp. (TEAM) – Form 4 filing (07/31/2025)

Co-founder, CEO, director and >10% owner Michael Cannon-Brookes reported selling 7,665 Class A shares on 31 July 2025 pursuant to a pre-established Rule 10b5-1 trading plan adopted 20 Feb 2025. Six separate market transactions were executed at weighted-average prices between $191.38 and $196.45, producing an overall blended average of roughly $194/share.

Following the sales, Cannon-Brookes’ indirect holdings—held through CBC Co Pty Ltd as trustee for the Cannon-Brookes Head Trust—declined from approximately 329,595 to 321,930 shares, a reduction of ≈2.3%. No derivative securities were reported, and no purchases occurred.

• All transactions classified under code “S” (open-market sale).
• Insider remains a significant shareholder with >320k shares.
• No other officers or directors participated in this filing.

The filing signals modest, pre-planned insider selling rather than a strategic shift in ownership.

Positive

• Sales executed under a disclosed Rule 10b5-1 plan, reducing the likelihood of opportunistic trading concerns and supporting good governance practices.

Negative

• CEO and co-founder reduced his indirect holding by 7,665 shares (~2.3%), which can be viewed as a slight bearish signal for market sentiment.

Insights

Equity Analyst

TL;DR: CEO sold ~2.3% of stake via 10b5-1; minor bearish signal but limited magnitude.

The disposal of 7,665 shares is small relative to Cannon-Brookes’ remaining 321,930-share position and was executed under a pre-set plan, tempering concerns about timing. While insider sales often pressure sentiment, the < $1.5 m transaction value is immaterial to Atlassian’s $50 bn+ market cap. With no accompanying operational news, I view the event as low-impact and mildly negative for near-term optics but not thesis-changing.

Governance & Insider-Trading Specialist

TL;DR: Pre-planned sale under Rule 10b5-1 limits governance risk; neutral impact.

The use of a Rule 10b5-1 plan, adopted months before execution, demonstrates compliance with the SEC’s new affirmative-defense framework and reduces litigation or perception risk. The modest percentage sold and continued >10% ownership indicate sustained alignment with shareholder interests. Accordingly, I classify the filing as routine and not materially impactful.

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)
07/31/2025

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	07/31/2025		S(1)		1,550	D	$191.8414(2)	328,045	I	See Footnote(3)
Class A Common Stock	07/31/2025		S(1)		1,227	D	$194.0614(4)	326,818	I	See Footnote(3)
Class A Common Stock	07/31/2025		S(1)		1,250	D	$193.254(5)	325,568	I	See Footnote(3)
Class A Common Stock	07/31/2025		S(1)		1,750	D	$196.005(6)	323,818	I	See Footnote(3)
Class A Common Stock	07/31/2025		S(1)		1,788	D	$195.0909(7)	322,030	I	See Footnote(3)
Class A Common Stock	07/31/2025		S(1)		100	D	$196.97	321,930	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 $191.38 to $192.31. 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 $193.56 to $194.54. 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 $192.55 to $193.50. 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 $195.57 to $196.45. 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.

7. This transaction was executed in multiple trades during the day at prices ranging from $194.57 to $195.56. 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	08/01/2025
	** 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 CEO Michael Cannon-Brookes sell?

He sold 7,665 Class A shares on 31 July 2025.

What was the average selling price of the shares?

Weighted-average prices ranged from $191.38 to $196.45, averaging roughly $194 per share.

Does the CEO still own shares after the sale?

Yes, he now indirectly owns 321,930 Class A shares through a trust.

Was the sale part of a 10b5-1 trading plan?

Yes, the transactions were executed under a Rule 10b5-1 plan adopted on 20 Feb 2025.

Did the filing report any derivative transactions?

No derivative securities were acquired or disposed of in this Form 4.

Is Michael Cannon-Brookes still classified as a 10% owner?

Yes, he remains a director, CEO and >10% beneficial owner after the transactions.