Atlassian Corporation
US ˙ NasdaqGS ˙ US0494681010

SecurityTEAM / Atlassian Corporation
InstitutionOssiam
Latest Disclosed Ownership360,017 shares
Latest Disclosed Value $ 24,571,160
Ossiam reports 77.18% increase in ownership of TEAM / Atlassian Corporation

On May 14, 2026 - Ossiam filed a 13F-HR form disclosing ownership of 360,017 shares of Atlassian Corporation (US:TEAM) valued at $24,571,160 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 203,198 shares of Atlassian Corporation. This represents a change in shares of 77.18% during the quarter. The current value of the position is $36,552,526 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-05-14 2026-03-31 13F ATLASSIAN CL A 049468101 360,017 156,819 77.18 24,571 -25.42 0.4322
2026-02-13 2025-12-31 13F ATLASSIAN CL A 049468101 203,198 15 0.01 32,947 1.53 0.6579
2025-11-14 2025-09-30 13F ATLASSIAN CL A 049468101 203,183 13,310 7.01 32,448 -15.85 0.4176
2025-08-13 2025-06-30 13F ATLASSIAN CL A 049468101 189,873 187,020 6,555.21 38,561 6,273.72 0.4337
2025-05-14 2025-03-31 13F ATLASSIAN CL A 049468101 2,853 -692 -19.52 605 -29.81 0.0085
2025-02-13 2024-12-31 13F ATLASSIAN CL A 049468101 3,545 -1,827 -34.01 863 1.06 0.0149
2024-11-13 2024-09-30 13F ATLASSIAN CL A 049468101 5,372 78 1.47 853 -8.87 0.0165
2024-08-13 2024-06-30 13F ATLASSIAN CL A 049468101 5,294 884 20.05 936 8.84 0.0177
2024-05-13 2024-03-31 13F ATLASSIAN CL A 049468101 4,410 1,943 78.76 860 46.76 0.0151
2024-02-13 2023-12-31 13F ATLASSIAN CL A 049468101 2,467 500 25.42 587 47.98 0.0095
2023-11-14 2023-09-30 13F ATLASSIAN CL A 049468101 1,967 -209 -9.60 396 8.49 0.0070
2023-08-11 2023-06-30 13F ATLASSIAN CL A 049468101 2,176 1,054 93.94 365 90.10 0.0066
2023-05-12 2023-03-31 13F ATLASSIAN CL A 049468101 1,122 170 17.86 192 57.38 0.0040
2023-02-13 2022-12-31 13F ATLASSIAN CL A 049468101 952 952 123 0.0032
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.