Aldeyra Faces Class Action Lawsuit, Stock Plummets 70.69%

Written by Emily J. Thompson, Senior Investment Analyst

Source: PRnewswire

Updated: Apr 30 2026

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Should l Buy ALDX?

Source: PRnewswire

Class Action Filed: Pomerantz LLP has announced a class action lawsuit against Aldeyra Therapeutics, alleging securities fraud by the company and certain officers, with investors needing to apply as Lead Plaintiff by May 29, 2026, indicating significant legal risks that could impact the company's reputation.
Negative FDA Response: On March 17, 2026, Aldeyra received a Complete Response Letter from the FDA stating that its New Drug Application lacked sufficient evidence of efficacy, leading to regulatory challenges that may affect future drug approval plans.
Stock Price Plunge: Following the FDA news, Aldeyra's stock price fell by $2.99, a staggering 70.69% drop to close at $1.24, reflecting market pessimism regarding the company's outlook and potentially undermining investor confidence.
Law Firm's Reputation: Pomerantz LLP, a premier firm in securities class litigation with over 85 years of experience, focuses on protecting the rights of victims of securities fraud, suggesting that this lawsuit may attract broader legal scrutiny and attention.

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Analyst Views on ALDX

Wall Street analysts forecast ALDX stock price to rise

2 Analyst Rating

2 Buy

0 Hold

0 Sell

Moderate Buy

Current: 1.730

Low

9.00

Averages

9.50

High

10.00

Current: 1.730

Low

9.00

Averages

9.50

High

10.00

H.C. Wainwright

Matthew Caufield

Buy -> Neutral

downgrade

$10 -> $2

2026-03-18

Reason

H.C. Wainwright

Matthew Caufield

Price Target

$10 -> $2

AI Analysis

2026-03-18

downgrade

Buy -> Neutral

Reason

H.C. Wainwright analyst Matthew Caufield downgraded Aldeyra to Neutral from Buy with a price target of $2, down from $10, after the company received a complete response letter from the FDA related to reproxalap for the topical treatment of the signs and symptoms of dry eye disease. The firm reduced its probability of success for reproxalap from 75% to 40% and downgraded Aldeyra.

About ALDX

Aldeyra Therapeutics, Inc. is a biotechnology company focused on discovering therapies designed to treat immune-mediated and metabolic diseases. The Company's approach is to develop pharmaceuticals that modulate protein systems, instead of directly inhibiting or activating single protein targets, with the goal of optimizing multiple pathways at once while minimizing toxicity. Its product candidates include reactive aldehyde species (RASP) modulators ADX-629, ADX 248, ADX-743, ADX-631, ADX-246, and chemically related molecules for the potential treatment of systemic and retinal immune-mediated and metabolic diseases. Its late-stage product candidates are reproxalap, a RASP modulator for the potential treatment of dry eye disease and allergic conjunctivitis, and ADX-2191, a novel formulation of intravitreal methotrexate for the potential treatment of retinitis pigmentosa. ADX 629 is in Phase II clinical trials for moderate alcohol-associated hepatitis and Sjogren-Larsson Syndrome.

About the author

Emily J. Thompson

Emily J. Thompson, a Chartered Financial Analyst (CFA) with 12 years in investment research, graduated with honors from the Wharton School. Specializing in industrial and technology stocks, she provides in-depth analysis for Intellectia’s earnings and market brief reports.

Aldeyra Therapeutics Faces Class Action Lawsuit

1 hour agoGlobenewswire

Class Action Filed: Bronstein, Gewirtz & Grossman, LLC, a nationally recognized investor-rights law firm, has initiated a class action lawsuit against Aldeyra Therapeutics (NASDAQ: ALDX) and certain officers, seeking damages for investors who purchased Aldeyra securities between November 3, 2023, and March 16, 2026.
Allegations Overview: The complaint alleges that defendants made false and misleading statements during the class period, failing to disclose inconsistencies in the clinical trial results of reproxalap, which rendered any positive findings unreliable and misled investors about the company's business and prospects.
Investor Participation: Affected investors are encouraged to apply to be lead plaintiffs by May 29, 2026, allowing them to share in any recovery without needing to serve as lead plaintiffs, thus broadening participation in the lawsuit.
Law Firm Credentials: Bronstein, Gewirtz & Grossman, LLC is well-regarded for representing investors in securities fraud class actions, having recovered hundreds of millions for investors nationwide, emphasizing their commitment to restoring investor capital and ensuring corporate accountability.

Reminder of Class Action for Aldeyra Therapeutics Investors

17 hours agoGlobenewswire

Class Action Notice: Rosen Law Firm reminds investors who purchased Aldeyra Therapeutics (NASDAQ: ALDX) securities between November 3, 2023, and March 16, 2026, to apply as lead plaintiffs by May 29, 2026, to represent other investors in the class action lawsuit.
Fee Arrangement: Investors participating in the class action will incur no upfront costs, as attorney fees will be collected through a contingency fee arrangement, significantly reducing the financial risk of engaging in litigation without guaranteed compensation.
Lawsuit Background: The lawsuit alleges that during the class period, Aldeyra's management made false and misleading statements and failed to disclose inconsistencies in the clinical trial results of its drug candidate reproxalap, leading to investor losses when the truth emerged.
Law Firm's Advantage: Rosen Law Firm is renowned for its successful track record in securities class actions, having recovered over $438 million for investors in 2019 alone, and was ranked number one by ISS Securities Class Action Services in 2017, highlighting its expertise and influence in the field.

Aldeyra Therapeutics Faces Class Action for Securities Fraud

2 days agoGlobenewswire

Class Action Reminder: The Schall Law Firm alerts investors of a class action lawsuit against Aldeyra Therapeutics for violations of §§10(b) and 20(a) of the Securities Exchange Act, concerning securities purchased between November 3, 2023, and March 16, 2026, with a deadline to contact the firm by May 29, 2026.
False Statement Allegations: The complaint alleges that Aldeyra made false and misleading statements regarding its reproxalap drug candidate, with clinical trial results showing inconsistencies, rendering the company's positive claims unreliable and misleading throughout the class period.
Investor Losses: As the market learned the truth about Aldeyra, investors suffered damages, indicating significant deficiencies in the company's disclosure practices that could adversely affect its stock price and investor confidence.
Legal Consultation Opportunity: The Schall Law Firm offers free legal consultations, encouraging affected shareholders to reach out to discuss their rights, demonstrating the firm's commitment to protecting investor interests.

Aldeyra Therapeutics Faces Class Action Lawsuit Over Misleading Clinical Trial Claims

3 days agoPRnewswire

Stock Price Collapse: Aldeyra Therapeutics (ALDX) experienced a dramatic 70.7% drop in share price, falling $2.99 to close at $1.24 on March 17, 2026, after the FDA rejected its lead drug candidate, resulting in significant losses for investors.
Lawsuit Context: A class action lawsuit has been filed against Aldeyra for allegedly making materially false and misleading statements in SEC filings between November 3, 2023, and March 16, 2026, claiming that reproxalap demonstrated 'broad-based, rapid-onset activity and consistent safety' without a reasonable basis.
FDA Response Letter: The FDA's Complete Response Letter issued in March 2026 highlighted a lack of substantial evidence and raised serious concerns regarding the reliability of the clinical trial results, further eroding investor confidence in the company's claims.
Investor Rights: Investors have until May 29, 2026, to apply as lead plaintiffs in the case to seek compensation, and even those who sold their shares at a loss may still participate based on their purchase dates and documented losses.

Reminder of Aldeyra Securities Class Action

4 days agoGlobenewswire

Class Action Notice: Rosen Law Firm reminds investors who purchased Aldeyra Therapeutics (NASDAQ: ALDX) securities between November 3, 2023, and March 16, 2026, that the deadline to apply as lead plaintiff is May 29, 2026, allowing potential compensation without any out-of-pocket fees.
Lawsuit Background: The lawsuit alleges that Aldeyra made false and misleading statements regarding the inconsistent results of its drug candidate reproxalap clinical trials, which misrepresented the company's business and prospects, leading to investor losses when the truth emerged.
Law Firm Credentials: Rosen Law Firm specializes in securities class actions and has recovered over $438 million for investors in 2019 alone, being ranked first in 2017 for the number of securities class action settlements, showcasing its strong reputation in this legal domain.
How to Participate: Investors can join the class action by visiting the Rosen Law Firm website or calling toll-free at 866-767-3653 for more information, and those wishing to serve as lead plaintiff must file with the court by the deadline.