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Prothena Corp Public vs Milestone Pharmaceuticals: PRTA and MIST compared

Prothena Corp Public is the larger company: $620K of revenue in its latest quarter (Q3 2026) against $559K for Milestone Pharmaceuticals (Q2 2026).

Prothena Corp Public vs Milestone Pharmaceuticals, latest quarterProthena Corp Public vs Milestone Pharmaceuticals, latest quarterProthena Corp Public (PRTA)Milestone Pharmaceuticals (MIST)Revenue$620K$559KOperating marginn/mn/m

Where the money goes: PRTA and MIST

Prothena Corp Public (PRTA) · Q3 2026

Prothena Corp Public, Q3 2026: revenue $620K (-74% year over year), net loss $16.5M, operating cash flow −$12.0M. The chart follows the revenue to costs, profit and cash.

Milestone Pharmaceuticals (MIST) · Q2 2026

Milestone Pharmaceuticals, Q2 2026: revenue $559K, net loss $28.6M, operating cash flow −$22.7M. The chart follows the revenue to costs, profit and cash.

Prothena Corp Public (PRTA)Milestone Pharmaceuticals (MIST)
Latest quarterQ3 2026Q2 2026
Revenue$620K$559K
Revenue growth, Y/Y-74%—
Operating marginn/mn/m
Net earnings−$16.5M−$28.6M
Operating cash flow−$12.0M−$22.7M

Questions

Which is bigger, Prothena Corp Public or Milestone Pharmaceuticals?

Prothena Corp Public is the larger company: $620K of revenue in its latest quarter (Q3 2026) against $559K for Milestone Pharmaceuticals (Q2 2026).

More: Prothena Corp Public earnings · how Prothena Corp Public makes money · Milestone Pharmaceuticals earnings · how Milestone Pharmaceuticals makes money

From the companies' latest 10-Q, 10-K or earnings release (10-Q filed Nov 5, 2026; 10-Q filed Aug 12, 2026). Fiscal quarters can end on different dates. Not investment advice.