Upstream Bio, Inc.
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Upstream Bio, Inc. (UPB)

Historical Shares Outstanding

Current Count

54.3M

Financial Fundamentals

UPBQuarterly Data • 5Y View

Share Count History

DateShares Out. (M)Change (M)Change %
2026-03-3154.30.1+0.17%
2025-12-3154.20.3+0.57%
2025-09-3053.90.2+0.30%
2025-06-3053.80.2+0.29%
2025-03-3153.62.3+4.43%
2024-12-3151.30.00.00%
2024-09-3051.30.00.00%
2024-06-3051.30.00.00%
2024-03-3151.315.0+41.35%
2023-12-3136.30.00.00%
2023-09-3036.3
Upstream Bio, Inc. (UPB) – Total Shares Outstanding