Stock of the Day

May 27, 2022

Prothena (PRTA)

$9.35
+$0.02 (+0.2%)
Market Cap: $488.46M

About Prothena

Prothena Corporation plc, a late-stage clinical biotechnology company, focuses on discovery and development of novel therapies to treat diseases caused by protein dysregulation in the United States. The company is involved in developing birtamimab, an investigational humanized antibody that is in Phase III clinical trial for the treatment of AL amyloidosis; Prasinezumab, a humanized monoclonal antibody, for the treatment of Parkinson's disease and other related synucleinopathies which is in Phase IIb clinical trial; NNC6019 that is in Phase lI clinical trial for the treatment of ATTR amyloidosis; and BMS-986446 and PRX012, which is in Phase I clinical trial for the treatment of Alzheimer's disease. Its discovery and preclinical programs include PRX123, a dual Aß-Tau vaccine for the treatment and prevention of Alzheimer's disease; and PRX019 for the treatment of neurogenerative diseases, as well as TDP-43 for the treatment of amyotrophic lateral sclerosis. Prothena Corporation plc has a license, development, and commercialization agreement with F. Hoffmann-La Roche Ltd. and Hoffmann-La Roche Inc. to develop and commercialize antibodies that target a-synuclein, including prasinezumab; and a collaboration agreement with Bristol-Myers Squibb to develop and commercialize antibodies targeting tau, TDP-43. The company was incorporated in 2012 and is based in Dublin, Ireland.

Today's Trend

Prothena Corporation plc (PRTA) — shares are trading slightly lower today amid mixed Q4 results and forward guidance. Investors are weighing an EPS beat and pipeline milestone potential against a very large revenue miss and explicit 2026 cash‑burn guidance. Volume is elevated versus average, suggesting active repositioning around the quarter and related commentary.

  • Q4 EPS slightly beat consensus (GAAP loss per share modestly narrower than expected), showing improvement versus a year ago — a near‑term positive signal for financial trajectory. Prothena Press Release (Q4 & FY2025)
  • Analyst support: RBC raised its price target from $11 to $12 (sector perform), implying meaningful upside from current levels — this can provide some analyst‑driven buying interest. Benzinga
  • Management highlighted upcoming partner milestones and program catalysts for 2026; these are potential positive binary events but timing/outcomes remain uncertain. Prothena Q4 Earnings Meet Estimates, Pipeline Progress in Focus
  • Full earnings call transcript and highlights are available for investors to parse program updates and management tone — useful for judging near‑term execution risk. Earnings Call Transcript (Seeking Alpha)
  • Revenue missed materially ($0.02M reported vs. ~$0.67M expected), underscoring current lack of commercial receipts and heightening sensitivity to financing and partnership milestones. Prothena (PRTA) Reports Q4 Loss, Lags Revenue Estimates
  • Company provided 2026 cash‑burn guidance (planned spend and runway), which may pressure shares if investors see a need for near‑term equity financing or dilution. Business Wire — Q4 & FY2025 Results and Guidance

Bottom line for investors: the EPS beat and analyst target raise are supportive, but the severe revenue shortfall and explicit cash‑burn guidance keep near‑term risk elevated. Watch upcoming partner milestones, financing commentary, and any management updates on runway as the likely catalysts that will drive PRTA shares next.