[144] Atlassian Corporation SEC Filing

Rhea-AI Filing Summary

Form 144 filed for Atlassian Corporation (TEAM) reporting a proposed sale of common stock. The notice lists 490,560 shares to be sold through Morgan Stanley Smith Barney, with an aggregate market value of $84,719,712 and 166,284,669 shares outstanding. The approximate date of sale is 09/09/2025 on NASDAQ. The shares were acquired as Founders Shares on 07/02/2010. The filing also discloses multiple prior 10b5-1 sales by the CANNON-BROOKES HEAD TRUST, each reporting 7,665 shares sold on numerous dates between 06/10/2025 and 09/08/2025 with daily gross proceeds shown. The filer certifies no undisclosed material information and, where applicable, reliance on a Rule 10b5-1 trading plan is indicated.

Positive

• Full disclosure of proposed sale size (490,560 shares) and aggregate market value ($84,719,712) in the Form 144
• Broker identified (Morgan Stanley Smith Barney LLC) and exchange specified (NASDAQ)
• Acquisition history provided (Founders Shares acquired 07/02/2010) and attestation regarding material nonpublic information
• Detailed listing of prior 10b5-1 sales by CANNON-BROOKES HEAD TRUST with dates and gross proceeds

Negative

• Large proposed disposal of 490,560 shares valued at $84,719,712 could be material to stakeholders
• Multiple recent sales under a 10b5-1 plan by CANNON-BROOKES HEAD TRUST are reported, indicating ongoing insider liquidity

Insights

Securities Analyst

TL;DR: An insider or affiliated account plans a sizable 144 sale worth $84.7M; prior systematic 10b5-1 sales are disclosed.

This Form 144 shows a proposed sale of 490,560 common shares valued at $84,719,712 to occur on 09/09/2025 via Morgan Stanley Smith Barney on NASDAQ. The shares originated as founders shares dated 07/02/2010. The filing separately details numerous executions under a 10b5-1 sales plan by CANNON-BROOKES HEAD TRUST, each for 7,665 shares across many dates from June through September 2025, with gross proceeds listed per trade. For market participants, the filing provides clear disclosure of the planned registered sale and the existence of continuing 10b5-1 program activity.

Corporate Governance Expert

TL;DR: Governance disclosure appears complete: Form 144 lists acquisition history, planned sale, and 10b5-1 activity with a signer attestation.

The document includes the requisite information about the securities to be sold, the original acquisition (founders shares, 07/02/2010), and a representation that no material nonpublic information is known. It also documents recent sales executed under a Rule 10b5-1 plan by a named trust with dates and gross proceeds. From a governance and compliance perspective, the filing provides the standard attestations and broker details expected for a Rule 144 notice.

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK
Filer CCC
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer

SEC File Number

Address of Issuer

Phone

Name of Person for Whose Account the Securities are To Be Sold

See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.

Relationship to Issuer

Relationship to Issuer

Relationship to Issuer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
COMMON	Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004	490560	84719712.00	166284669	09/09/2025	NASDAQ

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	07/02/2010	Founders Shares	Issuer			490560	07/02/2010	N/A

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
10b5-1 Sales Plan for CANNON-BROOKES HEAD TRUST 350 Bush Street, Floor 13 San Francisco CA 94104	COMMON	09/08/2025	7665	1315263.41
10b5-1 Sales Plan for CANNON-BROOKES HEAD TRUST 350 Bush Street, Floor 13 San Francisco CA 94104	COMMON	09/05/2025	7665	1317647.99
10b5-1 Sales Plan for CANNON-BROOKES HEAD TRUST 350 Bush Street, Floor 13 San Francisco CA 94104	COMMON	09/04/2025	7665	1285195.15
10b5-1 Sales Plan for CANNON-BROOKES HEAD TRUST 350 Bush Street, Floor 13 San Francisco CA 94104	COMMON	09/03/2025	7665	1311809.56
10b5-1 Sales Plan for CANNON-BROOKES HEAD TRUST 350 Bush Street, Floor 13 San Francisco CA 94104	COMMON	09/02/2025	7665	1325056.98
10b5-1 Sales Plan for CANNON-BROOKES HEAD TRUST 350 Bush Street, Floor 13 San Francisco CA 94104	COMMON	08/29/2025	7665	1363034.76
10b5-1 Sales Plan for CANNON-BROOKES HEAD TRUST 350 Bush Street, Floor 13 San Francisco CA 94104	COMMON	08/28/2025	7665	1350045.65
10b5-1 Sales Plan for CANNON-BROOKES HEAD TRUST 350 Bush Street, Floor 13 San Francisco CA 94104	COMMON	08/27/2025	7665	1311718.35
10b5-1 Sales Plan for CANNON-BROOKES HEAD TRUST 350 Bush Street, Floor 13 San Francisco CA 94104	COMMON	08/26/2025	7665	1267849.25
10b5-1 Sales Plan for CANNON-BROOKES HEAD TRUST 350 Bush Street, Floor 13 San Francisco CA 94104	COMMON	08/25/2025	7665	1298426.47
10b5-1 Sales Plan for CANNON-BROOKES HEAD TRUST 350 Bush Street, Floor 13 San Francisco CA 94104	COMMON	08/22/2025	7665	1300947.49
10b5-1 Sales Plan for CANNON-BROOKES HEAD TRUST 350 Bush Street, Floor 13 San Francisco CA 94104	COMMON	08/21/2025	7665	1259377.13
10b5-1 Sales Plan for CANNON-BROOKES HEAD TRUST 350 Bush Street, Floor 13 San Francisco CA 94104	COMMON	08/20/2025	7665	1274675.70
10b5-1 Sales Plan for CANNON-BROOKES HEAD TRUST 350 Bush Street, Floor 13 San Francisco CA 94104	COMMON	08/19/2025	7665	1279116.04
10b5-1 Sales Plan for CANNON-BROOKES HEAD TRUST 350 Bush Street, Floor 13 San Francisco CA 94104	COMMON	08/18/2025	7665	1290893.31
10b5-1 Sales Plan for CANNON-BROOKES HEAD TRUST 350 Bush Street, Floor 13 San Francisco CA 94104	COMMON	08/15/2025	7665	1280292.62
10b5-1 Sales Plan for CANNON-BROOKES HEAD TRUST 350 Bush Street, Floor 13 San Francisco CA 94104	COMMON	08/14/2025	7665	1251418.56
10b5-1 Sales Plan for CANNON-BROOKES HEAD TRUST 350 Bush Street, Floor 13 San Francisco CA 94104	COMMON	08/13/2025	7665	1240225.36
10b5-1 Sales Plan for CANNON-BROOKES HEAD TRUST 350 Bush Street, Floor 13 San Francisco CA 94104	COMMON	08/12/2025	7665	1227274.58
10b5-1 Sales Plan for CANNON-BROOKES HEAD TRUST 350 Bush Street, Floor 13 San Francisco CA 94104	COMMON	08/11/2025	7665	1253268.12
10b5-1 Sales Plan for CANNON-BROOKES HEAD TRUST 350 Bush Street, Floor 13 San Francisco CA 94104	COMMON	08/08/2025	7665	1310906.63
10b5-1 Sales Plan for CANNON-BROOKES HEAD TRUST 350 Bush Street, Floor 13 San Francisco CA 94104	COMMON	08/07/2025	7665	1342412.07
10b5-1 Sales Plan for CANNON-BROOKES HEAD TRUST 350 Bush Street, Floor 13 San Francisco CA 94104	COMMON	08/06/2025	7665	1424225.22
10b5-1 Sales Plan for CANNON-BROOKES HEAD TRUST 350 Bush Street, Floor 13 San Francisco CA 94104	COMMON	08/05/2025	7665	1418563.08
10b5-1 Sales Plan for CANNON-BROOKES HEAD TRUST 350 Bush Street, Floor 13 San Francisco CA 94104	COMMON	08/04/2025	7665	1421324.78
10b5-1 Sales Plan for CANNON-BROOKES HEAD TRUST 350 Bush Street, Floor 13 San Francisco CA 94104	COMMON	08/01/2025	7665	1413649.82
10b5-1 Sales Plan for CANNON-BROOKES HEAD TRUST 350 Bush Street, Floor 13 San Francisco CA 94104	COMMON	07/31/2025	7665	1488564.46
10b5-1 Sales Plan for CANNON-BROOKES HEAD TRUST 350 Bush Street, Floor 13 San Francisco CA 94104	COMMON	07/30/2025	7665	1516788.53
10b5-1 Sales Plan for CANNON-BROOKES HEAD TRUST 350 Bush Street, Floor 13 San Francisco CA 94104	COMMON	07/29/2025	7665	1534552.16
10b5-1 Sales Plan for CANNON-BROOKES HEAD TRUST 350 Bush Street, Floor 13 San Francisco CA 94104	COMMON	07/28/2025	7665	1548737.78
10b5-1 Sales Plan for CANNON-BROOKES HEAD TRUST 350 Bush Street, Floor 13 San Francisco CA 94104	COMMON	07/25/2025	7665	1552551.88
10b5-1 Sales Plan for CANNON-BROOKES HEAD TRUST 350 Bush Street, Floor 13 San Francisco CA 94104	COMMON	07/24/2025	7665	1533824.75
10b5-1 Sales Plan for CANNON-BROOKES HEAD TRUST 350 Bush Street, Floor 13 San Francisco CA 94104	COMMON	07/23/2025	7665	1554275.74
10b5-1 Sales Plan for CANNON-BROOKES HEAD TRUST 350 Bush Street, Floor 13 San Francisco CA 94104	COMMON	07/22/2025	7665	1530011.42
10b5-1 Sales Plan for CANNON-BROOKES HEAD TRUST 350 Bush Street, Floor 13 San Francisco CA 94104	COMMON	07/21/2025	7665	1494517.10
10b5-1 Sales Plan for CANNON-BROOKES HEAD TRUST 350 Bush Street, Floor 13 San Francisco CA 94104	COMMON	07/18/2025	7665	1477982.16
10b5-1 Sales Plan for CANNON-BROOKES HEAD TRUST 350 Bush Street, Floor 13 San Francisco CA 94104	COMMON	07/17/2025	7665	1476243.74
10b5-1 Sales Plan for CANNON-BROOKES HEAD TRUST 350 Bush Street, Floor 13 San Francisco CA 94104	COMMON	07/16/2025	7665	1451517.22
10b5-1 Sales Plan for CANNON-BROOKES HEAD TRUST 350 Bush Street, Floor 13 San Francisco CA 94104	COMMON	07/15/2025	7665	1454055.87
10b5-1 Sales Plan for CANNON-BROOKES HEAD TRUST 350 Bush Street, Floor 13 San Francisco CA 94104	COMMON	07/14/2025	7665	1472138.37
10b5-1 Sales Plan for CANNON-BROOKES HEAD TRUST 350 Bush Street, Floor 13 San Francisco CA 94104	COMMON	07/11/2025	7665	1476610.89
10b5-1 Sales Plan for CANNON-BROOKES HEAD TRUST 350 Bush Street, Floor 13 San Francisco CA 94104	COMMON	07/10/2025	7665	1569386.52
10b5-1 Sales Plan for CANNON-BROOKES HEAD TRUST 350 Bush Street, Floor 13 San Francisco CA 94104	COMMON	07/09/2025	7665	1686175.06
10b5-1 Sales Plan for CANNON-BROOKES HEAD TRUST 350 Bush Street, Floor 13 San Francisco CA 94104	COMMON	07/08/2025	7665	1675304.56
10b5-1 Sales Plan for CANNON-BROOKES HEAD TRUST 350 Bush Street, Floor 13 San Francisco CA 94104	COMMON	07/07/2025	7665	1644095.74
10b5-1 Sales Plan for CANNON-BROOKES HEAD TRUST 350 Bush Street, Floor 13 San Francisco CA 94104	COMMON	07/03/2025	7665	1640113.01
10b5-1 Sales Plan for CANNON-BROOKES HEAD TRUST 350 Bush Street, Floor 13 San Francisco CA 94104	COMMON	07/02/2025	7665	1571266.75
10b5-1 Sales Plan for CANNON-BROOKES HEAD TRUST 350 Bush Street, Floor 13 San Francisco CA 94104	COMMON	07/01/2025	7665	1589078.67
10b5-1 Sales Plan for CANNON-BROOKES HEAD TRUST 350 Bush Street, Floor 13 San Francisco CA 94104	COMMON	06/30/2025	7665	1557214.50
10b5-1 Sales Plan for CANNON-BROOKES HEAD TRUST 350 Bush Street, Floor 13 San Francisco CA 94104	COMMON	06/27/2025	7665	1561075.36
10b5-1 Sales Plan for CANNON-BROOKES HEAD TRUST 350 Bush Street, Floor 13 San Francisco CA 94104	COMMON	06/26/2025	7665	1521581.45
10b5-1 Sales Plan for CANNON-BROOKES HEAD TRUST 350 Bush Street, Floor 13 San Francisco CA 94104	COMMON	06/25/2025	7665	1530751.86
10b5-1 Sales Plan for CANNON-BROOKES HEAD TRUST 350 Bush Street, Floor 13 San Francisco CA 94104	COMMON	06/24/2025	7665	1521715.59
10b5-1 Sales Plan for CANNON-BROOKES HEAD TRUST 350 Bush Street, Floor 13 San Francisco CA 94104	COMMON	06/23/2025	7665	1476877.64
10b5-1 Sales Plan for CANNON-BROOKES HEAD TRUST 350 Bush Street, Floor 13 San Francisco CA 94104	COMMON	06/20/2025	7665	1475066.40
10b5-1 Sales Plan for CANNON-BROOKES HEAD TRUST 350 Bush Street, Floor 13 San Francisco CA 94104	COMMON	06/18/2025	7665	1505717.20
10b5-1 Sales Plan for CANNON-BROOKES HEAD TRUST 350 Bush Street, Floor 13 San Francisco CA 94104	COMMON	06/17/2025	7665	1532336.21
10b5-1 Sales Plan for CANNON-BROOKES HEAD TRUST 350 Bush Street, Floor 13 San Francisco CA 94104	COMMON	06/16/2025	7665	1538204.54
10b5-1 Sales Plan for CANNON-BROOKES HEAD TRUST 350 Bush Street, Floor 13 San Francisco CA 94104	COMMON	06/13/2025	7665	1516642.12
10b5-1 Sales Plan for CANNON-BROOKES HEAD TRUST 350 Bush Street, Floor 13 San Francisco CA 94104	COMMON	06/12/2025	7665	1529519.32
10b5-1 Sales Plan for CANNON-BROOKES HEAD TRUST 350 Bush Street, Floor 13 San Francisco CA 94104	COMMON	06/11/2025	7665	1584883.62
10b5-1 Sales Plan for CANNON-BROOKES HEAD TRUST 350 Bush Street, Floor 13 San Francisco CA 94104	COMMON	06/10/2025	7665	1631592.60

144: Remarks and Signature

Remarks

Date of Notice

Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1

ATTENTION:

The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.

Signature

ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)

FAQ

What does the Form 144 for TEAM report?

The filing reports a proposed sale of 490,560 common shares of Atlassian with an aggregate market value of $84,719,712, to be sold approximately on 09/09/2025 on NASDAQ.

Who is the broker handling the proposed sale in the TEAM Form 144?

The broker listed is Morgan Stanley Smith Barney LLC, Executive Financial Services, 1 New York Plaza, 8th Floor, New York, NY.

When and how were the shares being sold originally acquired?

The shares were acquired as Founders Shares on 07/02/2010, and the filing lists the acquisition date and nature of acquisition.

Does the filing disclose prior insider sales?

Yes. The filing lists numerous prior 10b5-1 sales by CANNON-BROOKES HEAD TRUST, each for 7,665 shares on multiple dates between 06/10/2025 and 09/08/2025, with gross proceeds shown per sale.

Is there an attestation about material nonpublic information in the Form 144?

Yes. The filer represents by signing the notice that they do not know any material adverse information about the issuer that has not been publicly disclosed.