-

Shareholder Alert: Robbins LLP Is Investigating Acadia Pharmaceuticals Inc. (ACAD) on Behalf of Shareholders

SAN DIEGO--(BUSINESS WIRE)--Shareholder rights law firm Robbins LLP is investigating Acadia Pharmaceuticals Inc. (NASDAQ: ACAD) on behalf of shareholders to determine whether certain Acadia officers and directors violated the Securities Exchange Act of 1934 and breached their fiduciary duties to the Company. Acadia is developing pimavanserin as a treatment for dementia-related psychosis and as an adjunctive treatment for schizophrenia and major depressive disorder.

If you suffered a loss due to Acadia Pharmaceuticals Inc.'s misconduct, click here.

Acadia Pharmaceuticals Inc. (ACAD) Misled Shareholders Regarding the Viability of Pimavanserin for Dementia-Related Psychosis

According to a class action complaint filed against Acadia, in April 2016, the FDA approved pimavanserin for the treatment of hallucinations and delusions associated with Parkinson's disease psychosis. In June 2020, Acadia submitted a supplemental New Drug Application ("sNDA") with the FDA to expand pimavanserin's label to include treatment for dementia-related psychosis.

On March 8, 2021, Acadia issued a press release providing a regulatory update on the pimavanserin sNDA, disclosing "that the Company received a notification from the [FDA] on March 3, 2021, stating that, as part of its ongoing review of the Company's [sNDA], the FDA has identified deficiencies that preclude discussion of labeling and post-marketing requirements/commitments at this time." On this news, Acadia's stock price fell $20.76 per share or over 45%, to close at $25.092 per share on March 9, 2021. Then, on April 5, 2021, Acadia issued a press release announcing it had received a Complete Response Letter from the FDA indicating that the pimavanserin sNDA could not be approved in its current form. Specifically, the FDA Division of Psychiatry "cited a lack of statistical significance in some of the subgroups of dementia, and insufficient numbers of patients with certain less common dementia subtypes as lack of substantial evidence of effectiveness to support approval." On this news, Acadia's stock price fell over 17% to close at $21.18 per share on April 5, 2021.

Acadia Pharmaceuticals Inc. (ACAD) Shareholders Have Options

Contact us to learn more:
Lauren Levi
(800) 350-6003
llevi@robbinsllp.com
Shareholder Information Form

Robbins LLP is a nationally recognized leader in shareholder rights law. To be notified if a class action against Acadia Pharmaceuticals Inc. settles or to receive free alerts about company executives engaged in wrongdoing, sign up for Stock Watch today.

Attorney Advertising. Past results do not guarantee a similar outcome.

Contacts

Lauren Levi
Robbins LLP
5040 Shoreham Place
San Diego, CA 92122
llevi@robbinsllp.com
(800) 350-6003
www.robbinsllp.com

More News From Robbins LLP

Stockholder Alert: Robbins LLP Informs Investors of the Flotek Industries, Inc. (FTK) Class Action

SAN DIEGO--(BUSINESS WIRE)--Shareholder rights law firm Robbins LLP informs investors that a class action was filed on behalf of all persons and entities who purchased or otherwise acquired Flotek Industries, Inc. (NYSE: FTK) securities between August 3, 2026 and August 17, 2026 (the "Class Period"). Flotek is an energy technology and services company.The complaint alleges that Flotek misled investors by failing to disclose the cancellation of its $400m Puerto Rican deal.Investors who suffered s...

Robbins LLP Encourages WSE Stockholders with Large Losses to Seek Counsel for the Securities Class Action Lawsuit Against Wise Group plc

SAN DIEGO--(BUSINESS WIRE)--Robbins LLP reminds investors that a securities class action has been filed on behalf of all persons and entities that purchased or otherwise acquired Wise Group plc (NASDAQ: WSE) securities between May 11, 2026 and July 23, 2026 (the "Class Period").The complaint alleges that Wise and certain of its senior executives violated the federal securities laws by making materially false and/or misleading statements regarding the Company's anti-money laundering compliance, a...

Robbins LLP Urges Investors of ARS Pharmaceuticals Inc. to Contact the Firm for Information About the SPRY Securities Class Action Lawsuit

SAN DIEGO--(BUSINESS WIRE)--Robbins LLP reminds shareholders that a securities class action has been filed on behalf of all investors who purchased or otherwise acquired ARS Pharmaceuticals Inc. (NASDAQ: SPRY) securities between March 9, 2026 and June 24, 2026 (the "Class Period"). ARS is a clinical stage biopharmaceutical company focused on the development and commercialization of neffy for needle-free intranasal delivery of epinephrine for emergency treatment of Type 1 allergic reactions, incl...
Back to Newsroom