Upstream Bio, Inc. - UPB
Ownership (Schedule 13D / 13G) · latest 50 filings
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| Filed | Form | Reporting person | Percent | Shares | SEC |
|---|---|---|---|---|---|
| May 15, 2026 | SCHEDULE 13G/A | Decheng Capital Global Life Sciences Fund IV, L.P. | 5.0% | 2,724,868 | View |
| May 15, 2026 | SCHEDULE 13G/A | Decheng Capital Management IV (Cayman), LLC | 5.0% | 2,724,868 | View |
| May 15, 2026 | SCHEDULE 13G/A | Decheng Capital Global Healthcare Fund (Master), LP | 0.0% | 0 | View |
| May 15, 2026 | SCHEDULE 13G/A | Decheng Capital Global Healthcare GP, LLC | 0.0% | 0 | View |
| May 15, 2026 | SCHEDULE 13G/A | Xiangmin Cui | 5.0% | 2,724,868 | 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.