Atlassian Foundation proposes $511K share sale

The notice also records three prior foundation sales under Rule 10b5-1, with separate dates, share counts and gross proceeds.

Rhea-AI Filing Summary

Atlassian Corp. (TEAM) notice lists a proposed sale for Atlassian Foundation Pty Ltd ATF Atlassian Foundation of 2,499 common shares, with an aggregate market value of $511,445.34 and an approximate sale date of October 15, 2026. It also lists the foundation’s Rule 10b5-1 sales of 1,875 shares on October 12, 208 shares on September 15, and 416 shares on August 27, 2026. Alex Blackmur signed the notice.

Key Figures

Proposed sale: 2,499 common shares Aggregate market value: $511,445.34 Shares sold: 1,875 shares +5 more

8 metrics

Proposed sale 2,499 common shares Approximate sale date October 15, 2026

Aggregate market value $511,445.34 Proposed sale

Shares sold 1,875 shares Rule 10b5-1 sale on October 12, 2026

Gross proceeds $393,750.00 Rule 10b5-1 sale on October 12, 2026

Shares sold 208 shares Rule 10b5-1 sale on September 15, 2026

Gross proceeds $39,052.00 Rule 10b5-1 sale on September 15, 2026

Shares sold 416 shares Rule 10b5-1 sale on August 27, 2026

Gross proceeds $74,880.00 Rule 10b5-1 sale on August 27, 2026

Key Terms

Rule 144, Rule 10b5-1

2 terms

Rule 144 regulatory

"sales required by paragraph (e) of Rule 144"

Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.

Rule 10b5-1 regulatory

"10b5-1 Sales for ATLASSIAN FOUNDATION"

Rule 10b5-1 is a regulation that allows company insiders to buy or sell their shares at predetermined times, even if they have access to non-public information. It acts like setting a schedule in advance for transactions, helping prevent accusations of unfair trading. This rule provides a way for insiders to plan trades transparently, giving investors confidence that these transactions are not based on hidden information.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

How many TEAM shares does the notice list for proposed sale?

The notice lists a proposed sale of 2,499 common shares for Atlassian Foundation Pty Ltd ATF Atlassian Foundation, with an aggregate market value of $511,445.34 and an approximate sale date of October 15, 2026.

What prior TEAM sales does the notice report?

The notice lists three Rule 10b5-1 sales by the foundation: 1,875 shares with gross proceeds of $393,750.00 on October 12, 2026; 208 shares with gross proceeds of $39,052.00 on September 15, 2026; and 416 shares with gross proceeds of $74,880.00 on August 27, 2026.

Which broker and exchange are listed for the TEAM sale?

Morgan Stanley Smith Barney LLC is listed as the broker, and NASDAQ is listed as the exchange.

AI-generated analysis. How Rhea-AI works. Not financial advice.

See more from StockTitan in Google Search and AI answers. Adds StockTitan as a preferred source · opens Google

Add on Google Not now

Available on EDGAR 10/15/2026 - 04:37 PM EDT Accepted by SEC EDGAR 10/15/2026 - 04:37 PM EDT Learn about SEC filing dates

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	0001968118
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	ATLASSIAN CORPORATION
SEC File Number	001-37651
Address of Issuer	350 Bush Street, Floor 13 San Francisco CALIFORNIA 94104
Phone	4157011110
Name of Person for Whose Account the Securities are To Be Sold	Atlassian Foundation Pty Ltd ATF Atlassian Foundation
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	Officer

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	2499	511445.34	159005198	10/15/2026	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	Gift from Founders	Issuer			2499	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 for ATLASSIAN FOUNDATION 350 Bush Street, Floor 13 San Francisco CA 94104	COMMON	10/12/2026	1875	393750.00
10b5-1 Sales for ATLASSIAN FOUNDATION 350 Bush Street, Floor 13 San Francisco CA 94104	COMMON	09/15/2026	208	39052.00
10b5-1 Sales for ATLASSIAN FOUNDATION 350 Bush Street, Floor 13 San Francisco CA 94104	COMMON	08/27/2026	416	74880.00

144: Remarks and Signature

Remarks
Date of Notice	10/15/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	03/03/2026
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	/s/ Alex Blackmur
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)