OneStream, Inc. - OS
Ownership (Schedule 13D / 13G) · latest 50 filings
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| Filed | Form | Reporting person | Percent | Shares | SEC |
|---|---|---|---|---|---|
| Mar 27, 2026 | SCHEDULE 13G/A | The Vanguard Group | 0.0% | 0 | View |
| Feb 17, 2026 | SCHEDULE 13G/A | T. Rowe Price Investment Management, Inc. | 8.6% | 7,779,413 | View |
| Feb 13, 2026 | SCHEDULE 13G/A | Thomas Anthony Shea | 16.3% | 18,173,259 | View |
| Feb 13, 2026 | SCHEDULE 13G/A | Kayne Anderson Rudnick Investment Management, LLC | 5.4% | 4,867,687 | View |
| Feb 12, 2026 | SCHEDULE 13G | Champlain Investment Partners, LLC | 3.3% | 2,886,232 | View |
| Feb 09, 2026 | SCHEDULE 13G | Glazer Capital, LLC | 6.83% | 6,166,406 | View |
| Feb 09, 2026 | SCHEDULE 13G | Paul J. Glazer | 6.83% | 6,166,406 | View |
| Jan 26, 2026 | SCHEDULE 13G/A | Norges Bank | 6.6% | 5,974,029 | View |
| Nov 13, 2025 | SCHEDULE 13G/A | Kayne Anderson Rudnick Investment Management, LLC | 7.0% | 6,211,980 | View |
| Nov 13, 2025 | SCHEDULE 13G/A | Virtus Investment Advisers, LLC | 4.8% | 4,240,709 | View |
| Nov 13, 2025 | SCHEDULE 13G/A | Virtus Equity Trust on behalf of Virtus Small-Cap Growth Fund | 4.7% | 4,101,675 | View |
| Nov 03, 2025 | SCHEDULE 13G/A | Norges Bank | 9.7% | 8,533,771 | View |
Percent = "% of class represented by amount beneficially owned" for this reporting person in the filed 13D/13G.
Shares = reported beneficial ownership amount for the same row (not portfolio shares from 13F).
Amendments (/A) can repeat the same holder over time, so rows should not be summed.
Extraction is best-effort from filing text and can be missing or noisy; verify exact figures via the SEC link in each row.