Upstream Bio, Inc. (UPB)
NASDAQ · Healthcare
Upstream Bio, Inc. Stock Price History 2023–2025
Upstream Bio, Inc.
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Historical daily closing price for Upstream Bio, Inc. since 2024, adjusted for splits and dividends. The latest closing stock price for Upstream Bio, Inc. as of June 11, 2026 is 6.27.
- The all-time high Upstream Bio, Inc. stock closing price was 32.60 on January 13, 2026.
- The Upstream Bio, Inc. 52-week high stock price is 32.60, which is 419.9% above the current share price.
- The Upstream Bio, Inc. 52-week low stock price is 6.27, which is 0.0% above the current share price.
- The average Upstream Bio, Inc. stock price for the last 52 weeks is 16.95.
Annual Close Price
YEAR-END CLOSE · USD
ANNUAL % CHANGE · %
| Year | Average | Year Open | Year High | Year Low | Year Close | Annual % Change |
|---|---|---|---|---|---|---|
| 2026 | 13.88 | 27.07 | 32.60 | 6.27 | 6.27 | -76.91% |
| 2025 | 14.93 | 16.30 | 30.43 | 6.07 | 27.15 | +65.15% |
| 2024 | 22.33 | 22.00 | 27.39 | 16.11 | 16.44 | — |
Upstream Bio, Inc. Stock Price History — FAQ
Upstream Bio, Inc. (UPB) stock price history over the last 3 years — annual and quarterly figures with year-over-year growth and charts.
Where can I see UPB's stock price history history?
The chart and table above show Upstream Bio, Inc.'s stock price history by year and by quarter, including the growth rate.