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Upstream Bio (UPB) Q2 2026 earnings results (second quarter 2026)

10-Q filed Aug 11, 2026

Upstream Bio (UPB) reported revenue of $773K for the second quarter 2026 (Q2 2026), -18% from a year earlier and -25% from the quarter before.

Revenue$773K
Year over year-18%
Quarter over quarter-25%
Operating margin—
Net earnings−$39.7M

Upstream Bio, Q2 2026: revenue $773K (-18% year over year), net loss $39.7M, operating cash flow −$35.6M. The chart follows the revenue to costs, profit and cash.

Q2 2026AmountQ/QY/Y
Revenue$773K-25%-18%
Operating profit−$42.4M——
Net earnings−$39.7M——
Operating cash flow−$35.6M——

What changed

Revenue was $773K in Q2 2026, down 18% year over year and down 25% from the previous quarter.

Operating costs exceeded revenue by $42.4M, an operating margin of -5481.0%. Total costs fell 5% while revenue fell 18%. The quarter ended with a net loss of $39.7M, narrower than the previous quarter's $40.6M loss.

Operating cash flow was −$35.6M. Non-cash charges added back $50K of depreciation and amortization and $4.4M of share-based compensation.

Questions

What was Upstream Bio's revenue in the second quarter 2026?

Upstream Bio (UPB) reported revenue of $773K for the second quarter 2026 (Q2 2026), -18% from a year earlier and -25% from the quarter before.

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Source: Upstream Bio 10-Q on SEC EDGAR.