The law firm of Kirby McInerney LLP announces that a class action lawsuit has been filed on behalf of investors who acquired ImmunityBio, Inc. (“ImmunityBio” or the “Company”) (NASDAQ: IBRX) securities during the period of January 19, 2026 through March 24, 2026, inclusive (“the Class Period”).

If you suffered a loss on your ImmunityBio investments, you have until May 26, 2026 to request lead plaintiff appointment. For more information:

[CONTACT THE FIRM IF YOU SUFFERED A LOSS]

What Is This Lawsuit About? The lawsuit alleges that (1) Defendant Patrick Soon-Shiong, the Company’s Executive Chairman of the Board, materially overstated the capabilities of Anktiva, an FDA-approved IL-15 receptor agonist immunotherapy that combats cancer, in public statements.

On March 24, 2026, before markets opened, the United States Food and Drug Administration (“FDA”) issued a warning letter to ImmunityBio. The FDA stated in the warning letter that a TV ad and podcast, which can be accessed through ImmunityBio’s website, has been determined to be “false or misleading.” The FDA also stated that “Untitled Letters dated September 9, 2025, and January 7, 2026” were sent to “Altor BioScience, LLC (an indirect wholly-owned subsidiary of ImmunityBio, Inc.) [which] addressed presentations of Anktiva that were, in certain respects, similar to presentations in the TV ad and podcast addressed in this [warning] letter.” “[D]espite receiving these previous Untitled Letters, ImmunityBio continues to promote Anktiva in a similarly misleading manner. On this news, the price of ImmunityBio shares declined by $1.99 per share, or approximately 21.2%, from $9.40 per share on March 23, 2026 to close at $7.41 on March 24, 2026.

[LEARN MORE ABOUT THE LAWSUIT]

The Lead Plaintiff Appointment Process. The federal securities laws permit any investor who acquired eligible securities during the class period to seek appointment as lead plaintiff in a class action lawsuit. Courts typically appoint the investor(s) with the largest financial loss in the case and the ability to represent the class rather than investors with simply the largest investment portfolio. Courts regularly appoint individual investors, whether acting alone or as a group, as lead plaintiffs. The rights of any investor who bought shares during the class period are generally already protected. However, lead plaintiffs have the power to influence case strategy and have a say in settlement decisions, as well as decisions concerning allocation of settlement funds among class members.

[LEARN MORE ABOUT THE LEAD PLAINTIFF PROCESS]

What Should I Do? If you purchased or otherwise acquired ImmunityBio securities, have information, or would like to learn more about this investigation, please contact Lauren Molinaro of Kirby McInerney LLP by email at investigations@kmllp.com, or fill out the contact form below, to discuss your rights or interests with respect to these matters at no cost.

Kirby McInerney LLP is a New York-based plaintiffs’ law firm concentrating in securities, antitrust, whistleblower, and consumer litigation. The firm’s efforts on behalf of shareholders in securities litigation have resulted in recoveries totaling billions of dollars. Additional information about the firm can be found at Kirby McInerney LLP’s website.

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

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