| Mar 25, 2026 | Other Gift · Class D Common Stock → 4,330,215 Class A Common Stock ⓘ | Class D Common Stock | OS ONESTREAM, INC. | +4,330,215 | — | — | 11,856,018 | low |
| Mar 25, 2026 | Other Gift · Class D Common Stock → 4,330,215 Class A Common Stock ⓘ | Class D Common Stock | OS ONESTREAM, INC. | -4,330,215 | — | — | 0 | low |
| Mar 24, 2026 | Other Gift · Class D Common Stock → 4,330,215 Class A Common Stock ⓘ | Class D Common Stock | OS ONESTREAM, INC. | +4,330,215 | — | — | 4,330,215 | low |
| Mar 24, 2026 | Other Gift · Class D Common Stock → 4,330,215 Class A Common Stock ⓘ | Class D Common Stock | OS ONESTREAM, INC. | -4,330,215 | — | — | 0 | low |
| Mar 10, 2026 | Other Tax withholding ⓘ | Class A Common Stock | OS ONESTREAM, INC. | -9,258 | $23.70 | $219.4K | 459,986 | low |