Filing Flows › Prothena Corp Public (PRTA) › Q2 2025
Prothena Corp Public (PRTA) Q2 2025 earnings results (second quarter 2025)
10-Q filed Aug 4, 2025
Prothena Corp Public (PRTA) reported revenue of $4.4M for the second quarter 2025 (Q2 2025), -97% from a year earlier and +56% from the quarter before.
Prothena Corp Public, Q2 2025: revenue $4.4M (-97% year over year), net loss $126M, operating cash flow −$46.3M. The chart follows the revenue to costs, profit and cash.
| Q2 2025 | Amount | Q/Q | Y/Y |
|---|---|---|---|
| Revenue | $4.4M | +56% | -97% |
| Operating profit | −$84.6M | — | — |
| Net earnings | −$126M | — | — |
| Operating cash flow | −$46.3M | — | — |
What changed
Revenue was $4.4M in Q2 2025, down 97% year over year and up 56% from the previous quarter.
Operating costs exceeded revenue by $84.6M, an operating margin of -1914.4%. Total costs grew 21% against a revenue fall of 97%. The quarter ended with a net loss of $125.8M, wider than the previous quarter's $60.2M loss.
Operating cash flow was −$46.3M. Non-cash charges added back $225K of depreciation and amortization and $12.4M of share-based compensation. Working capital and other items added $66.8M. Capital expenditures of $86K exceeded it, leaving free cash flow of −$46.4M.
Questions
What was Prothena Corp Public's revenue in the second quarter 2025?
Prothena Corp Public (PRTA) reported revenue of $4.4M for the second quarter 2025 (Q2 2025), -97% from a year earlier and +56% from the quarter before.