Prothena Corporation plc

PRTA

NASDAQ

Healthcare

Biotechnology

Dublin, IE163 employeesprothena.com

$9.82

-0.21(-2.09%)

Mkt Cap $529M

$4.58

$11.17

52-Week Range

At a Glance

AI-generated

Revenue breakdown: Collaboration (66.3%), Collaboration Program Global PRX019 (33.6%), License (0%).

8-K

Prothena Corporation plc (PRTA) filed an 8-K on February 19, 2026, under Item 2.02 announcing its financial results for the period via a press release furnished as Exhibit 99.1. The filing also includes Item 9.01 for financial statements and exhibits.

$529M

Market Cap

$10M

Revenue

-$244M

Net Income

Employees163

Fundamentals

How The Business Makes Money

Revenue by Segment

Collaboration66.3%($236M)

Collaboration Program Global PRX01933.6%($120M)

License0%($150.0K)

Activity

What Changed Recently

Financial Results

Feb 18, 2026

(including Exhibit 99.1) of this Current Report. On February 19, 2026, Prothena Corporation plc issued a press release announcing its financial results for the

Regulation FD

Feb 26, 2026

(including Exhibit 99.1) of this Current Report. Item 8.01 Other Events. On February 27, 2026, the Company announced a share repurchase plan under which the Com

Company Profile

CIK0001559053

ISINIE00B91XRN20

CUSIPG72800108

Phone353 1 236 2500

Address77 Sir John Rogerson’s Quay, Dublin, 2, IE

SEC EDGAR