OneStream, Inc. - OS

Ownership (Schedule 13D / 13G) · latest 50 filings · Back to all files
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Filed Form Reporting person Percent Shares SEC
May 15, 2026 SCHEDULE 13G/A Darlington Partners Capital Management, LP 0.0% 0 View
May 15, 2026 SCHEDULE 13G/A Darlington Partner GP, LLC 0.0% 0 View
May 15, 2026 SCHEDULE 13G/A Darlington Partners, L.P. 0.0% 0 View
May 15, 2026 SCHEDULE 13G/A Scott W. Clark 0.0% 0 View
May 15, 2026 SCHEDULE 13G/A Ramsey B. Jishi 0.0% 0 View
May 15, 2026 SCHEDULE 13G/A T. Rowe Price Investment Management, Inc. 0.0% 111 View
May 14, 2026 SCHEDULE 13G/A Kayne Anderson Rudnick Investment Management, LLC 0.0% 0 View
May 11, 2026 SCHEDULE 13G/A Norges Bank 0.18% 181,642 View
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
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.