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Mereo BioPharma Group vs Upstream Bio: MREO and UPB compared

Mereo BioPharma Group is the larger company: $800K of revenue in its latest quarter (Q3 2026) against $773K for Upstream Bio (Q2 2026).

Mereo BioPharma Group vs Upstream Bio, latest quarterMereo BioPharma Group vs Upstream Bio, latest quarterMereo BioPharma Group (MREO)Upstream Bio (UPB)Revenue$800K$773KOperating margin-777.2%n/m

Where the money goes: MREO and UPB

Mereo BioPharma Group (MREO) · Q3 2026

Mereo BioPharma Group, Q3 2026: revenue $800K, operating margin -777.2%, net loss $5.9M, operating cash flow −$4.1M. The chart follows the revenue to costs, profit and cash.

Upstream Bio (UPB) · Q2 2026

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.

Mereo BioPharma Group (MREO)Upstream Bio (UPB)
Latest quarterQ3 2026Q2 2026
Revenue$800K$773K
Revenue growth, Y/Y—-18%
Operating margin-777.2%n/m
Net earnings−$5.9M−$39.7M
Net margin-732.9%—
Operating cash flow−$4.1M−$35.6M

Questions

Which is bigger, Mereo BioPharma Group or Upstream Bio?

Mereo BioPharma Group is the larger company: $800K of revenue in its latest quarter (Q3 2026) against $773K for Upstream Bio (Q2 2026).

More: Mereo BioPharma Group earnings · how Mereo BioPharma Group makes money · Upstream Bio earnings · how Upstream Bio makes money

From the companies' latest 10-Q, 10-K or earnings release (10-Q filed Nov 9, 2026; 10-Q filed Aug 11, 2026). Fiscal quarters can end on different dates. Not investment advice.