July 16th Deadline Alert: Glancy Prongay & Murray LLP Reminds Investors of the Deadline in the Class Action Lawsuit Against Prothena Corporation plc(PRTA)

National securities litigation law firm Glancy
Prongay & Murray LLP (“GPM”) reminds investors of the July
16, 2018 deadline to file a lead plaintiff motion in the class
action filed on behalf of investors that purchased Prothena Corporation
plc (“Prothena” or the “Company”) (NASDAQ: PRTA)
securities between October 15, 2015 and April 20, 2018, inclusive
(the “Class Period”).

If you are a shareholder who suffered a loss, click here
to participate.

Investors suffering losses on their Prothena investments are encouraged
to contact Lesley Portnoy of GPM to discuss their legal rights in this
class action at 310-201-9150 or by email to shareholders@glancylaw.com.

On October 15, 2015, Prothena announed 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.

The complaint filed in this class action alleges that, Defendants during
the Class Period violated the federal securities laws by: (1)
withholding relevant trial data showing that Prothena’s NEOD001, an
antibody designed to treat amyloid light chain amyloidosis (“AL
amyloidosis”), was not an effective treatment for AL amyloidosis; (2)
making misleading comparisons of NEOD001’s “best response” rates against
certain prior studies; and (3) touting that Prothena’s ongoing Phase 1/2
study of NEOD001 provided a strong basis for late-stage Phase 2b and
Phase 3 studies of NEOD001, even though the full Phase 1/2 study data
demonstrated that NEOD001 was not an effective treatment for AL
amyloidosis.

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If you purchased shares Prothena during the Class Period you may move
the Court no later than July 16, 2018 to ask the Court to
appoint you as lead. To be a member of the Class you need not take any
action at this time; you may retain counsel of your choice or take no
action and remain an absent member of the Class. If you wish to learn
more about this action, or if you have any questions concerning this
announcement or your rights or interests with respect to these matters,
please contact Lesley 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/20180710005965/en/

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