-

Lost Money in Y-mAbs Therapeutics, Inc.?

Gibbs Law Group Investigates Potential Securities Law Violations

OAKLAND, Calif.--(BUSINESS WIRE)--Y-mAbs Therapeutics, Inc. shares plummeted over 59% on October 31, 2022, after an FDA advisory committee voted against approving the company’s neuroblastoma drug omburtamab on October 28, 2022, according to Marketwatch. Gibbs Law Group is investigating a potential Y-mAbs Therapeutics (YMAB) Securities Class Action Lawsuit on behalf of shareholders who lost money in Y-mAbs Therapeutics, Inc. (NASDAQ: YMAB).

To speak with an attorney regarding this class action lawsuit investigation, click here or call (888) 410-2925.

On Monday, October 31, 2022, shares of Y-mAbs Therapeutics, Inc. plunged more than 59% after Marketwatch reported that an FDA committee voted 16-0 on Friday, October 28th, “that there wasn't enough evidence to say that Y-mAbs’s experimental neuroblastoma drug omburtamab improves overall survival. J.P. Morgan also downgraded Y-mAbs stock from “neutral” to “underweight,” with analysts explaining: “[W]e do not think recent newsflow bodes well for investor confidence or for ascribing further pipeline value to follow-on indications which are mostly in their early innings of development."

The FDA’s rejection of omburtamab follows briefing documents submitted by the FDA on October 26, 2022 that posed “significant questions as to whether the submitted study can be considered an adequate and well-controlled trial necessary to establish effectiveness.”

On November 7, 2022, Y-mAbs released its financial results for the third quarter of 2022, which stated that shares have lost around 79.2% since the beginning of the year. In a press release, Y-mAbs President and Interim Chief Executive Office, Thomas Gad, said that he was “disappointed by the outcome of the recent ODAC meeting for omburtamab[…]”

Previously, in Y-mAbs’s earnings call for Q2 of 2022 on August 9, 2022, the company assured investors it had been involved in a number of “ongoing” discussions with the FDA regarding omburtamab and the team was “confident” they would be able to address any issues raised.

Following this news, Y-mAbs’s stock price dropped 59% to close at $3.61 on October 31, 2022 and continued to drop as low as $3.00 on November 3, 2022, causing significant harm to investors.

What Should Y-mAbs Investors Do?

If you invested in Y-mAbs, visit our website or contact our securities team directly at (888) 410-2925 to discuss how you may be able to recover your losses. Our investigation concerns whether Y-mAbs Therapeutics, Inc. has violated federal securities laws by providing false or misleading statements to investors.

About Gibbs Law Group

Gibbs Law Group represents investors throughout the country in securities litigation to correct abusive corporate governance practices, breaches of fiduciary duty, and proxy violations. The firm has recovered over a billion dollars for its clients against some of the world’s largest corporations, and our attorneys have received numerous honors for their work, including “Best Lawyers in America,” “Top Plaintiff Lawyers in California,” “California Lawyer Attorney of the Year,” “Class Action Practice Group of the Year,” “Consumer Protection MVP,” and “Top Women Lawyers in California.”

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

Contacts

EILEEN EPSTEIN
PHONE: 510.350.9728
EMAIL: EJE@CLASSLAWGROUP.COM

Gibbs Law Group

NASDAQ:YMAB

Release Summary
Gibbs Law Group continues to investigate potential legal claims on behalf of Y-mAbs investors.
Release Versions
$Cashtags
Hashtags

Contacts

EILEEN EPSTEIN
PHONE: 510.350.9728
EMAIL: EJE@CLASSLAWGROUP.COM

More News From Gibbs Law Group

Class Action Filed Over Drift Protocol $280 Million Hack By Gibbs Mura, A Law Group

OAKLAND, Calif.--(BUSINESS WIRE)--On April 14, 2026, Gibbs Mura, A Law Group was the first to file a class action lawsuit on behalf of Drift Protocol investors who lost money in the $280 million April 1st hack, widely considered the largest cryptocurrency exploit of 2026. The lawsuit charges Circle Internet Financial with knowingly permitting the attackers, reportedly tied to North Korea’s government, to offload $230 million of their spoils over the course of several hours by using Circle’s own...

Drift Protocol Cryptocurrency Hack Class Action Lawsuit Investigation; Drift Investors Urged to Contact Award-Winning Financial Fraud Recovery Firm, Gibbs Mura, A Law Group

OAKLAND, Calif.--(BUSINESS WIRE)--Gibbs Mura, A Law Group has opened an investigation into the Drift Protocol exploit on April 1, 2026, in which hackers allegedly drained an estimated $280-285 million from investor trading, lending and vault deposits, and then moved the stolen assets through Circle’s Cross-Chain Transfer Protocol (CCTP) over the course of several hours. According to news reports, Circle Internet Financial made no intervention to freeze the funds, despite having aggressively froz...

Goliath Ventures Faces Class Action Lawsuit Over Alleged $328 Million Ponzi Scheme; Lawsuit Filed by Gibbs Mura & Silver Law Group Alleges Goliath Used Investor Funds to Fund CEO’s Lavish Lifestyle and to Pay Investor Returns

OAKLAND, Calif.--(BUSINESS WIRE)--On Wednesday, March 11, 2026, Gibbs Mura and Silver Law Group were the first to file a class action lawsuit against Goliath Ventures, Inc., the Orlando-based blockchain investment firm, and its CEO Christopher Delgado. The lawsuit seeks recovery for investors who were harmed by the alleged $328 million Ponzi scheme and comes after the arrest of CEO Delgado for charges of wire fraud and money laundering. Our attorneys are reviewing potential claims on behalf of...
Back to Newsroom