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- Historical

Data

- Earnings (+67.6% Growth)
- Ratings (6.8 Score)
- Holders

Upcoming Events

- Earnings (10/29/26)

News

- Analyst Ratings
- Earnings Related
- Guidance
- Insider Trades
- Mgmt Changes
- M & A
- Retail Sales
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- Stock Buybacks
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Prothena Corp. (NQ:PRTA)
Delayed: 9.61 +0.26 (2.78%)
Prev. Close $9.35  
Open$9.28 
52 Wk High$76.42 
52 Wk Low$28.20 
Day High$9.63 
Day Low$9.26 
P/E N/A  
EPS$-2.84 
Volume267,670 

Friends, Peers and Foes (?): ACLX, AGIO, AKRO, ASND, BBIO (more...)

Aug 21, 2026 02:33 PM Form 4 PROTHENA CORP PUBLIC For: Aug 20 Filed by: SCULLY WILLIAM P
Aug 19, 2026 10:19 AM Form SCHEDULE 13G/A PROTHENA CORP PUBLIC Filed by: Fennell Todd W.
Aug 18, 2026 04:17 PM Form 3 PROTHENA CORP PUBLIC For: Aug 18 Filed by: Fennell Todd W.
Aug 18, 2026 04:03 PM Form 4 PROTHENA CORP PUBLIC For: Aug 18 Filed by: SCULLY WILLIAM P
Aug 14, 2026 09:10 AM Form SCHEDULE 13G/A PROTHENA CORP PUBLIC Filed by: Fennell Todd W.
Aug 11, 2026 04:08 PM Form 4 PROTHENA CORP PUBLIC For: Aug 10 Filed by: SCULLY WILLIAM P
Aug 11, 2026 09:38 AM Form 3 PROTHENA CORP PUBLIC For: Aug 06 Filed by: Fennell Todd W.
Aug 10, 2026 03:25 PM Form 4 PROTHENA CORP PUBLIC For: Aug 07 Filed by: SCULLY WILLIAM P
Aug 6, 2026 04:29 PM Form 10-Q PROTHENA CORP PUBLIC For: Jun 30
Aug 6, 2026 04:22 PM Form 8-K PROTHENA CORP PUBLIC For: Aug 06
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