Company: TEAM
Filing Date: 2025-08-15
Form Type: S-8
Source: 0001650372-25-000038
Chunk: 0

Company: Atlassian Corp
Filing Date: 2025-08-15
Form: S-8
Chunk 0
---
<div align='center'>As filed with the U.S. Securities and Exchange Commission on August 15, 2025</div>

#### Registration No. 333-

### UNITED STATES

### SECURITIES AND EXCHANGE COMMISSION

#### Washington, D.C. 20549
<div align='center'>_________________________________________________________</div>

#### FORM S-8

### REGISTRATION STATEMENT

#### UNDER THE SECURITIES ACT OF 1933
<div align='center'>__________________________________________________________</div>

#### Atlassian Corporation
<div align='center'>(Exact name of registrant as specified in its charter)

________________________________________________________________</div>

| Delaware                        |     | 88-3940934         |
| (State or other jurisdiction of 
 incorporation)                  |     | -IRS Employer      
 Identification No. |

#### 350 Bush Street, Floor 13

#### San Francisco, California 94104
<div align='center'>(Address of Principal Executive Offices, including Zip Code)

______________________________________________________________</div>

#### Amended and Restated 2015 Share Incentive Plan
<div align='center'>(Full title of the plan)

______________________________________________________________</div>

#### Grant Reid

#### Deputy General Counsel

#### Atlassian Corporation

#### 350 Bush Street, Floor 13

#### San Francisco, California 94104
<div align='center'>(Name and address of agent for service)

(415) 701-1110

(Telephone number, including area code, of agent for service)

______________________________________________________________</div>

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act.

| Large accelerated filer |     | ☒ |     | Accelerated filer         |     | ☐ |     | Emerging growth company |     | ☐ |
| Non-accelerated filer   |     | ☐ |     | Smaller reporting company |     | ☐ |     |                         |     |   |

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section