ImmunityBio Faces Class Action Lawsuit
Written by Emily J. Thompson, Senior Investment Analyst
Updated: May 08 2026
0mins
Source: PRnewswire
- Class Action Initiation: Purchasers of ImmunityBio, Inc. securities between January 19 and March 24, 2026, have until May 26, 2026, to seek lead plaintiff status in a class action lawsuit alleging violations of the Securities Exchange Act of 1934, potentially exposing investors to significant losses.
- False Statement Allegations: The lawsuit claims that ImmunityBio made false and misleading statements regarding its lead biologics product Anktiva, asserting it could make all NMIBC patients cancer-free long-term, a claim that has not been substantiated, which may undermine investor confidence.
- FDA Warning Impact: On March 24, 2026, the FDA issued a warning letter to ImmunityBio's CEO, stating that promotional materials misbranded Anktiva, violating the Federal Food, Drug, and Cosmetic Act, leading to a 21% drop in stock price, directly impacting the company's financial health.
- Law Firm Background: Robbins Geller Rudman & Dowd LLP is a leading law firm in securities fraud and shareholder rights litigation, having recovered over $916 million for investors in 2025, demonstrating its significant strength and influence in securities class action lawsuits.
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Analyst Views on IBRX
Wall Street analysts forecast IBRX stock price to fall
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Strong Buy
Current: 8.050
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Current: 8.050
Low
5.00
Averages
7.33
High
9.00
About IBRX
Immunitybio, Inc. is a vertically integrated, clinical-stage biotechnology company developing therapies and vaccines that bolster the natural immune system to defeat cancers and infectious diseases. Using its applied science and platforms to treat cancers, including the development of potential cancer vaccines, as well as developing immunotherapies and cell therapies to reduce or eliminate the need for standard high-dose chemotherapy. Its platforms and their associated product candidates are designed to attack cancer and infectious pathogens by activating both the innate immune system, including NK cells, dendritic cells, and macrophages, as well as the adaptive immune system comprising B and T cells, in an orchestrated manner. Its platforms for the development of biologic product candidates include antibody-cytokine fusion proteins, vaccine vectors, and cell therapies. Its biologic commercial product candidate, Anktiva, is an IL-15 superagonist antibody-cytokine fusion protein.
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.
- FDA Application Acceptance: ImmunityBio's marketing application for its bladder cancer therapy Anktiva has been accepted by the FDA, marking a significant advancement in the company's efforts to expand its product label, which is expected to enhance its market competitiveness.
- Target Action Date: The FDA has set January 6, 2027, as the target action date for this application, providing the company with a clear market timeline that could bolster investor confidence.
- Patient Population Size: Approximately 80% of bladder cancer cases diagnosed annually in the U.S. are non-muscle-invasive bladder cancer (NMIBC), with about 85% of those patients having papillary disease, indicating a substantial potential market for this therapy.
- Clinical Trial Results: The sBLA is supported by data from the QUILT 3.032 Phase 2/3 trial, which showed a 12-month disease-free survival rate of approximately 58% for patients with papillary-only NMIBC, providing strong backing for the FDA's acceptance.
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- FDA Review Progress: The U.S. FDA has accepted ImmunityBio's supplemental Biologics License Application (sBLA) for ANKTIVA, aiming to expand its indication to include patients with BCG-unresponsive non-muscle invasive bladder cancer (NMIBC), with a decision expected by January 6, 2027, which could significantly increase treatment options.
- Clinical Data Support: The sBLA submission is based on data from the QUILT-3.032 trial, showing a 12-month disease-free survival rate of 58.2% in 80 high-risk patients treated with ANKTIVA plus BCG, providing scientific justification for the indication expansion that may improve patient outcomes.
- Expert Consensus Reinforcement: At the FDA workshop in May 2026, experts unanimously agreed that CIS and papillary disease are biologically the same, supporting the inclusion of papillary disease in existing treatment protocols, highlighting the urgent treatment needs for BCG-unresponsive patients and furthering the sBLA review.
- Significant Market Potential: The expanded indication for ANKTIVA positions it as a crucial immunotherapy option for BCG-unresponsive patients, likely enhancing ImmunityBio's competitiveness in the bladder cancer treatment market and addressing the urgent needs of approximately 64,000 NMIBC patients diagnosed annually.
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- Class Action Initiation: ImmunityBio, Inc. (NASDAQ: IBRX) faces a class action lawsuit for purchasers of its securities between January 19 and March 24, 2026, with a deadline of May 26, 2026, to apply as lead plaintiff, alleging violations of the Securities Exchange Act of 1934 by the company and its Executive Chairman.
- False Statement Allegations: The lawsuit claims that ImmunityBio made false and misleading statements during the class period, particularly regarding its lead biologics product Anktiva, asserting it could make all NMIBC patients cancer-free long-term, a claim that has not been substantiated.
- FDA Warning Letter Impact: On March 24, 2026, a warning letter from the FDA to CEO Richard Adcock highlighted misleading advertising for Anktiva, resulting in a 21% drop in stock price, indicating a significant loss of market confidence in the company.
- Law Firm Background: Robbins Geller Rudman & Dowd LLP is a leading law firm in securities fraud and shareholder rights litigation, having recovered over $916 million for investors in 2025, showcasing its strong capabilities and influence in securities class action lawsuits.
See More
- Class Action Initiation: Robbins Geller Rudman & Dowd LLP announces that investors who purchased ImmunityBio securities between January 19 and March 24, 2026, have until May 26, 2026, to seek lead plaintiff status in a class action lawsuit, indicating significant investor concern over potential misconduct by the company.
- Allegations Overview: The lawsuit alleges that ImmunityBio and its Executive Chairman made false or misleading statements during the class period, claiming that their lead product Anktiva could make all NMIBC patients cancer-free long-term, a claim that has not been substantiated, potentially undermining investor confidence.
- FDA Warning Impact: On March 24, 2026, a warning letter from the FDA to ImmunityBio's CEO highlighted misleading advertising of Anktiva, resulting in a 21% drop in stock price following the news, reflecting market apprehension regarding the company's compliance and regulatory standing.
- Law Firm Credentials: Robbins Geller is a leading law firm in securities fraud and shareholder rights litigation, recovering over $916 million for investors in 2025, showcasing its significant strength and influence in the securities class action landscape.
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- Atara Biotherapeutics Lawsuit: Atara is facing allegations during the class period from May 20, 2024, to January 9, 2026, for failing to disclose manufacturing issues that jeopardized FDA approval for tabelecleucel, potentially leading to significant negative impacts on its financial condition.
- Coty Performance Issues: Coty Inc. is accused during the period from May 7, 2025, to February 4, 2026, of not disclosing underperformance in its Consumer Beauty segment and compressed margins due to increased marketing investments, which misled investors about the company's prospects.
- Super Micro Compliance Violations: Super Micro Computer is facing allegations from February 2, 2024, to March 19, 2026, for selling servers to Chinese companies, violating U.S. export control laws, which could expose the company to regulatory scrutiny.
- ImmunityBio Capability Overstatement: ImmunityBio is accused during the class period from January 19, 2026, to March 24, 2026, of overstating Anktiva's capabilities, leading to materially misleading statements about the company's business and operations, affecting investor confidence.
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- Deadline for Claims: ClaimsFiler reminds investors that those who purchased ImmunityBio shares between January 19 and March 24, 2026, must file lead plaintiff applications by May 26, 2026, to participate in the securities class action lawsuit against the company.
- Legal Allegations: ImmunityBio and certain executives are accused of failing to disclose material information during the class period, violating federal securities laws, which could lead to significant financial losses for investors.
- FDA Warning Impact: A warning letter from the FDA, made public on March 24, 2026, highlighted misleading advertisements for Anktiva, indicating violations of the Federal Food, Drug, and Cosmetic Act, raising public health concerns.
- Stock Price Volatility: Following the news, ImmunityBio's stock price plummeted by 21%, losing $1.98 per share to close at $7.42, reflecting market apprehension regarding the company's compliance and future outlook.
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