X0508 4 2025-10-14 false 0001650372 Atlassian Corp TEAM 0001666120 Cannon-Brookes Michael C/O ATLASSIAN CORPORATION 350 BUSH STREET, FLOOR 13 SAN FRANCISCO CA 94104 true true true false CEO, Co-Founder true Class A Common Stock 2025-10-14 4 S false 700.00 156.0014 D 420875.00 I See Footnote Class A Common Stock 2025-10-14 4 S false 350.00 152.1383 D 420525.00 I See Footnote Class A Common Stock 2025-10-14 4 S false 41.00 157.39 D 420484.00 I See Footnote Class A Common Stock 2025-10-14 4 S false 676.00 150.3275 D 419808.00 I See Footnote Class A Common Stock 2025-10-14 4 S false 450.00 148.1956 D 419358.00 I See Footnote Class A Common Stock 2025-10-14 4 S false 1650.00 154.327 D 417708.00 I See Footnote Class A Common Stock 2025-10-14 4 S false 1407.00 156.7292 D 416301.00 I See Footnote Class A Common Stock 2025-10-14 4 S false 1800.00 153.4697 D 414501.00 I See Footnote Class A Common Stock 2025-10-14 4 S false 291.00 151.1278 D 414210.00 I See Footnote Class A Common Stock 2025-10-14 4 S false 300.00 149.0967 D 413910.00 I See Footnote This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on February 20, 2025. This transaction was executed in multiple trades during the day at prices ranging from $150.90 to $151.74. 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. This transaction was executed in multiple trades during the day at prices ranging from $148.71 to $149.44. 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. This transaction was executed in multiple trades during the day at prices ranging from $155.36 to $156.34. 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. Shares are held by CBC Co Pty Limited as trustee for the Cannon-Brookes Head Trust. This transaction was executed in multiple trades during the day at prices ranging from $151.95 to $152.47. 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. This transaction was executed in multiple trades during the day at prices ranging from $149.80 to $150.77. 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. This transaction was executed in multiple trades during the day at prices ranging from $147.71 to $148.49. 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. This transaction was executed in multiple trades during the day at prices ranging from $153.98 to $154.87. 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. This transaction was executed in multiple trades during the day at prices ranging from $156.37 to $157.20. 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. This transaction was executed in multiple trades during the day at prices ranging from $152.95 to $153.91. 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. /s /Drew Parkes, Attorney-in-Fact for Cannon-Brookes Michael 2025-10-15