LOS ANGELES--(BUSINESS WIRE)--Jun 8, 2018--Glancy Prongay & Murray LLP (“GPM”) announces an investigation on behalf of Prothena Corporation (“Prothena” or the “Company”) (NASDAQ: PRTA ) investors concerning the Company and its officers’ possible violations of federal securities laws. To obtain information or aid in the investigation, please visit the Prothena investigation page on our website at www.glancylaw.com/case/prothena-corporation.

On October 15, 2015, Prothena disclosed its late-stage Phase 2b “PRONTO” study and expansion of its Phase 1/2 clinical trial for the antibody NEOD001. On April 23, 2018, Prothena announced it was ending development of NEOD001 after its Phase 2b PRONTO trial failed to reach either its primary or secondary endpoints. On this news, shares of Prothena fell $25.34, or nearly 69%, to close at $11.50 on April 23, 2018, thereby injuring investors.

If you purchased Prothena securities, have information or would like to learn more about these claims, or have any questions concerning this announcement or your rights or interests with respect to these matters, please contact Lesley F. Portnoy, Esquire, of GPM, 1925 Century Park East, Suite 2100, Los Angeles, California 90067 at 310-201-9150, Toll-Free at 888-773-9224, by email to shareholders@glancylaw.com, or visit our website at www.glancylaw.com. If you inquire by email please include your mailing address, telephone number and number of shares purchased.

This press release may be considered Attorney Advertising in some jurisdictions under the applicable law and ethical rules.

View source version on businesswire.com:https://www.businesswire.com/news/home/20180608005840/en/

CONTACT: Glancy Prongay & Murray LLP, Los Angeles/New York

Lesley Portnoy, 310-201-9150 or 888-773-9224

shareholders@glancylaw.com

www.glancylaw.com

KEYWORD: UNITED STATES NORTH AMERICA CALIFORNIA

INDUSTRY KEYWORD: PROFESSIONAL SERVICES LEGAL

SOURCE: Glancy Prongay & Murray LLP

Copyright Business Wire 2018.

PUB: 06/08/2018 09:18 PM/DISC: 06/08/2018 09:18 PM

http://www.businesswire.com/news/home/20180608005840/en