Atlassian Corporation’s major shareholder Michael Cannon-Brookes has reported beneficial ownership of 47,534,373 shares of Class B Common Stock as of December 31, 2025. These shares are held by CBC Co Pty Ltd as trustee of the Cannon-Brookes Head Trust and are convertible into Class A shares on a one-for-one basis.
On an as-converted basis under SEC Rule 13d-3, this position represents 21.8% of Atlassian’s outstanding Class A Common Stock, based on 170,436,795 Class A shares plus the reported Class B shares. Because each Class B share carries ten votes versus one vote for each Class A share, this holding represents approximately 42.4% of the combined voting power of Atlassian’s outstanding Class A and Class B shares. The reporting person has sole voting and dispositive power over the reported shares.
Positive
None.
Negative
None.
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 13G
UNDER THE SECURITIES EXCHANGE ACT OF 1934
(Amendment No. 14)
Atlassian Corporation
(Name of Issuer)
Class A Common Stock
(Title of Class of Securities)
049468101
(CUSIP Number)
12/31/2025
(Date of Event Which Requires Filing of this Statement)
Check the appropriate box to designate the rule pursuant to which this Schedule is filed:
Rule 13d-1(b)
Rule 13d-1(c)
Rule 13d-1(d)
SCHEDULE 13G
CUSIP No.
049468101
1
Names of Reporting Persons
Michael Cannon-Brookes
2
Check the appropriate box if a member of a Group (see instructions)
(a)
(b)
3
Sec Use Only
4
Citizenship or Place of Organization
AUSTRALIA
Number of Shares Beneficially Owned by Each Reporting Person With:
5
Sole Voting Power
47,534,373.00
6
Shared Voting Power
0.00
7
Sole Dispositive Power
47,534,373.00
8
Shared Dispositive Power
0.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
47,534,373.00
10
Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)
11
Percent of class represented by amount in row (9)
21.8 %
12
Type of Reporting Person (See Instructions)
IN
Comment for Type of Reporting Person: The shares reflected in Row 9 represent 47,534,373 shares of Class B Common Stock held of record by CBC Co Pty Ltd as trustee of the Cannon-Brookes Head Trust. The reporting person has sole voting power and sole dispositive power with respect to these shares. Each share of Class B Common Stock is convertible into one share of Class A Common Stock at any time at the option of the holder and upon the occurrence of certain other events as described in the Certificate of Incorporation of Atlassian Corporation (the "Issuer"). In addition, each share of Class B Common Stock will automatically convert into one share of Class A Common Stock upon any transfer, except for certain permitted transfers described in the Issuer's Certificate of Incorporation. The percent of class reflected in Row 11 was calculated based on 170,436,795 shares of Class A Common Stock and 95,068,747 shares of Class B Common Stock outstanding as of December 31, 2025, as reported by the Issuer to the reporting person, including the 47,534,373 shares of Class B Common Stock beneficially owned by the reporting person. The shares of Class B Common Stock held by the reporting person are treated as converted into shares of Class A Common Stock only for purposes of computing the percentage ownership of the reporting person pursuant to Rule 13d-3 of the Act. Each share of Class A Common Stock is entitled to one vote and each share of Class B Common Stock is entitled to ten votes. The percentage reported does not reflect the ten for one voting power of the Class B Common Stock. The shares of Class B Common Stock held by the reporting person represent approximately 42.4% of the aggregate combined voting power of the outstanding shares of Class A Common Stock and Class B Common Stock.
SCHEDULE 13G
Item 1.
(a)
Name of issuer:
Atlassian Corporation
(b)
Address of issuer's principal executive offices:
350 Bush Street, Floor 13, San Francisco, California, 94104
Item 2.
(a)
Name of person filing:
Michael Cannon-Brookes
(b)
Address or principal business office or, if none, residence:
Level 6, 341 George Street, Sydney, NSW 2000, Australia
(c)
Citizenship:
Australia
(d)
Title of class of securities:
Class A Common Stock
(e)
CUSIP No.:
049468101
Item 3.
If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(a)
Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)
Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)
Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)
Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)
An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)
An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)
A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)
A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)
A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
(j)
A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J),
please specify the type of institution:
(k)
Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
Item 4.
Ownership
(a)
Amount beneficially owned:
47,534,373 shares of Class B Common Stock, held of record by CBC Co Pty Ltd as trustee of the Cannon-Brookes Head Trust.
(b)
Percent of class:
Represents 21.8% of the outstanding shares of Class A Common Stock. This assumes that beneficially owned shares are treated as converted into shares of Class A Common Stock only for purposes of computing the percentage ownership of the reporting person pursuant to Rule 13d-3 of the Act. The percentage reported does not reflect the ten for one voting power of the Class B Common Stock. The percent of class was calculated based on 170,436,795 shares of Class A Common Stock outstanding as of December 31, 2025, plus 47,534,373 shares of Class B Common Stock beneficially owned by the reporting person. There were 170,436,795 shares of Class A Common Stock and 95,068,747 shares of Class B Common Stock outstanding as of December 31, 2025. The 47,534,373 shares of Class B Common Stock held by the reporting person represent approximately 42.4% of the aggregate combined voting power of the outstanding shares of Class A Common Stock and Class B Common Stock.
(c)
Number of shares as to which the person has:
(i) Sole power to vote or to direct the vote:
47,534,373
(ii) Shared power to vote or to direct the vote:
0
(iii) Sole power to dispose or to direct the disposition of:
47,534,373
(iv) Shared power to dispose or to direct the disposition of:
0
Item 5.
Ownership of 5 Percent or Less of a Class.
Not Applicable
Item 6.
Ownership of more than 5 Percent on Behalf of Another Person.
Not Applicable
Item 7.
Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
Not Applicable
Item 8.
Identification and Classification of Members of the Group.
Not Applicable
Item 9.
Notice of Dissolution of Group.
Not Applicable
Item 10.
Certifications:
Not Applicable
SIGNATURE
After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.
Michael Cannon-Brookes
Signature:
/s/ Grant Reid
Name/Title:
Grant Reid, Attorney in Fact for Michael Cannon-Brookes
What does the latest Schedule 13G/A reveal about Atlassian (TEAM)?
The filing shows that Michael Cannon-Brookes beneficially owns 47,534,373 shares of Atlassian Class B Common Stock. These shares are convertible into Class A stock and give him 21.8% economic ownership and about 42.4% combined voting power as of December 31, 2025.
How many Atlassian (TEAM) shares does Michael Cannon-Brookes beneficially own?
He beneficially owns 47,534,373 shares of Class B Common Stock, held by CBC Co Pty Ltd as trustee of the Cannon-Brookes Head Trust. Each Class B share is convertible into one Class A share, giving him a substantial economic and voting interest in Atlassian.
What percentage of Atlassian (TEAM) does Michael Cannon-Brookes own and control?
On an as-converted basis, his holding represents 21.8% of Atlassian’s Class A Common Stock. Due to Class B’s ten votes per share, these 47,534,373 Class B shares represent about 42.4% of the combined voting power of all outstanding Class A and Class B shares.
How are Atlassian (TEAM) Class A and Class B shares structured?
Atlassian has Class A and Class B Common Stock. Each Class A share carries one vote, while each Class B share carries ten votes. Each Class B share is convertible into one Class A share, and certain transfers automatically convert Class B into Class A.
What are Atlassian’s (TEAM) total shares outstanding used in this filing?
The ownership calculations use 170,436,795 Class A shares and 95,068,747 Class B shares outstanding as of December 31, 2025. The 47,534,373 Class B shares reported are included in these totals and underpin the stated ownership and voting percentages.
Who has voting and dispositive power over the reported Atlassian (TEAM) shares?
The filing states that Michael Cannon-Brookes has sole voting and sole dispositive power over the 47,534,373 Class B shares. There is no shared voting or shared dispositive power reported for these securities in the Schedule 13G/A amendment.
