Prothena plc Long Term Debt

Prothena plc (PRTA) currently reports a long-term debt of $4M as of June 2026. That compares with $14M in the prior-year period — down 70.9% year over year. Use the charts on this page to explore Prothena plc's long-term debt history and peer comparisons.

Prothena plc's long-term debt decreased from $14M to $4M — a 70.9% year-over-year decrease (period ending June 2026). Watching multi-year history on the chart below helps separate one-off swings from a lasting trend.

Prothena plc reported $4M in long-term debt as of June 2026. That compares with $14M in the prior-year period — down 70.9% year over year. Absolute dollar amounts are most useful when compared with prior periods, peers, and related line items such as revenue, assets, or liabilities on Stockcircle.

Start with the current long-term debt of $4M, then check the historical chart for trend and the peer comparison chart for relative positioning. From there, open related valuation or income-statement pages for Prothena plc, and consider following PRTA for alerts when major investors trade the stock.

Prothena plc is classified in the Healthcare sector. On long-term debt, it currently shows $4M. Sector peers often share similar capital intensity and growth regimes, so relative rankings inside Healthcare are usually more informative than comparing PRTA with unrelated industries.