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Mar 13, 2026 06:30AM Prothena (PRTA) Reiterated at Market Outperform by Citizens After Fireside Chat

Feb 19, 2026 04:16PM Prothena Corp. (PRTA) Tops Q4 EPS by 19c, provides guidance

Dec 12, 2025 04:06PM Prothena board member Paula Cobb steps down to join Manifold Bio

Dec 1, 2025 04:32AM Prothena Corp (PRTA) PT Raised to $19 at Citizens: Discovery Engine Successful

Nov 19, 2025 04:06PM Prothena presents TDP-43 data at neuroscience conference

Nov 10, 2025 06:49AM Prothena Corp (PRTA) PT Raised to $30 at H.C. Wainwright

Nov 6, 2025 04:49PM Prothena Corp. (PRTA) Tops Q3 EPS by 4c

Oct 28, 2025 08:14AM Prothena Corp (PRTA) PT Raised to $36 as Piper Sandler Remains Bullish

Oct 8, 2025 06:46AM Prothena Corp (PRTA) PT Raised to $20 at H.C. Wainwright

Oct 1, 2025 04:51PM BMS-986446 receives FDA fast track designation for alzheimer's treatment

Sep 2, 2025 06:42AM Prothena Corp (PRTA) PT Lowered to $11 at Citizens JMP

Aug 28, 2025 09:16AM Prothena Corp (PRTA) PT Slashed at Piper Sandler as PRX012 Data Underwhelms

Aug 11, 2025 06:43AM Increasing unusual option volume: MNDY PRTA CMPO BLDE NB GRND GDDY RPD

Aug 5, 2025 09:45AM Prothena Corp (PRTA) PT Lowered to $10 at RBC Capital

Aug 5, 2025 04:15AM Citizens JMP Reiterates Market Outperform Rating on Prothena Corp (PRTA)

Aug 4, 2025 04:09PM Prothena Corp. (PRTA) Misses Q2 EPS by $1.12, provides guidance

Jun 20, 2025 07:00AM Cantor Fitzgerald Reiterates Neutral Rating on Prothena Corp (PRTA)

Jun 20, 2025 06:26AM Prothena Corp. (PRTA) call put ratio 1 call to 29 puts with a focus on 5K contracts of January 7.5 puts

Jun 18, 2025 04:05PM Prothena Corp. (PRTA) Announces Corporate Restructuring, Revises Guidance

Jun 16, 2025 06:10AM Oppenheimer Reiterates Perform Rating on Prothena Corp (PRTA)

Jun 16, 2025 01:06AM Prothena Corp. (PRTA) Partner Roche to Advance Prasinezumab into Phase III Development for Early-Stage Parkinson's

May 28, 2025 06:26AM BofA Securities Downgrades Prothena Corp (PRTA) to Underperform

May 27, 2025 10:30AM Prothena Corp (PRTA) PT Lowered to $81 at Piper Sandler

May 27, 2025 08:50AM Cantor Fitzgerald Downgrades Prothena Corp (PRTA) to Neutral

May 27, 2025 06:15AM Prothena Corp (PRTA) PT Lowered to $14 at H.C. Wainwright

May 27, 2025 03:38AM Oppenheimer Downgrades Prothena Corp (PRTA) to Perform

May 27, 2025 01:09AM Jefferies Downgrades Prothena Corp (PRTA) to Hold

May 23, 2025 04:14PM Prothena Corp. (PRTA) announces Phase 3 trial for Birtamimab did not meet endpoint

May 23, 2025 04:01PM Prothena Corp. (PRTA) Halted, News Pending

May 12, 2025 06:58AM Prothena Corp (PRTA) PT Lowered to $30 at H.C. Wainwright

May 9, 2025 04:41AM Prothena Corp (PRTA) PT Lowered to $78 at Citizens JMP

May 8, 2025 04:40PM Prothena Corp. (PRTA) Tops Q1 EPS by 11c, provides guidance

Apr 2, 2025 07:04AM Smid cap biotech investors must stop chasing binary events says Cantor Fitzgerald

Feb 20, 2025 05:38PM Prothena Corp. (PRTA) Misses Q4 EPS by 8c

Jan 30, 2025 02:29PM Kuehn Law Encourages Investors of Prothena Corporation PLC to Contact Law Firm

Jan 29, 2025 09:12AM Cantor Fitzgerald provides update on Biotechnology stocks

Jan 3, 2025 08:23AM Piper Sandler Explores Direct and Indirect Catalysts for Selected Biotechnology Companies

Dec 20, 2024 06:43AM Prothena Corp (PRTA) PT Lowered to $48 at H.C. Wainwright

Dec 19, 2024 11:49AM Prothena Corp (PRTA) PT Lowered to $22 at BofA Securities

Dec 19, 2024 09:12AM Prothena Corp (PRTA) PT Lowered to $58 at Oppenheimer

Dec 16, 2024 04:55AM Oppenheimer Reiterates Outperform Rating on Prothena Corp (PRTA)

Nov 12, 2024 04:22PM Prothena Corp. (PRTA) Tops Q3 EPS by 8c

Oct 29, 2024 06:21AM Oppenheimer Reiterates Outperform Rating on Prothena Corp (PRTA)

Oct 1, 2024 06:58AM H.C. Wainwright Reiterates Buy Rating on Prothena Corp (PRTA)

Oct 1, 2024 06:05AM Prothena Corp (PRTA) PT Lowered to $31 at BofA Securities

Sep 30, 2024 01:03PM RBC Capital on Prothena Corp (PRTA), 'Today's Downside Move May Be Excessive'

Sep 27, 2024 04:05PM Prothena Corp. (PRTA) Announces Leadership Team Updates

Sep 7, 2024 08:00PM Here's the list of biotech stocks that have key data catalysts in 2025

Aug 14, 2024 07:43AM Prothena Corp (PRTA) PT Lowered to $62 at Oppenheimer

Aug 9, 2024 06:27AM Prothena Corp (PRTA) PT Lowered to $24 at RBC Capital

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