Filing Flows › Prothena Corp Public (PRTA) › Q3 2026
Prothena Corp Public (PRTA) Q3 2026 earnings results (third quarter 2026)
10-Q filed Nov 5, 2026
Prothena Corp Public (PRTA) reported revenue of $620K for the third quarter 2026 (Q3 2026), -74% from a year earlier and -39% from the quarter before.
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.
| Q3 2026 | Amount | Q/Q | Y/Y |
|---|---|---|---|
| Revenue | $620K | -39% | -74% |
| Operating profit | −$18.8M | — | — |
| Net earnings | −$16.5M | — | — |
| Operating cash flow | −$12.0M | — | — |
What changed
Revenue was $620K in Q3 2026, down 74% year over year and down 39% from the previous quarter.
Operating costs exceeded revenue by $18.8M, an operating margin of -3035.6%. Total costs fell 54% while revenue fell 74%. The quarter ended with a net loss of $16.5M, narrower than the previous quarter's $18.6M loss.
Operating cash flow was −$12.0M. Non-cash charges added back $209K of depreciation and amortization and $6.4M of share-based compensation. Working capital and other items used $2.1M. Capital expenditures of $73K exceeded it, leaving free cash flow of −$12.0M.
Questions
What was Prothena Corp Public's revenue in the third quarter 2026?
Prothena Corp Public (PRTA) reported revenue of $620K for the third quarter 2026 (Q3 2026), -74% from a year earlier and -39% from the quarter before.