New York, New York--(Newsfile Corp. - October 28, 2026) - The law firm of Kirby McInerney LLP continues its investigation on behalf of Arrivent BioPharma ("Arrivent" or the "Company") (NASDAQ: AVBP) investors concerning the Company's and/or members of its senior management's possible violation of the federal securities laws and other unlawful business practices.

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What Happened?

On October 6, 2026, Arrivent disclosed that its Phase 3 FURVENT trial of firmonertinib, the Company's lead pipeline candidate for patients with EGFR exon 20 insertion-mutant non-small cell lung cancer, did not meet its primary endpoint of progression free survival ("PFS") by blinded independent central review ("BICR"). The Company stated, "FURVENT did not show a meaningful improvement in PFS over chemotherapy by BICR in this study," and that "these disappointing results are not what we hoped for." The Company had previously predicted that the Phase 3 trial results would be released months earlier, in "mid-2026," and on May 11, 2026, Arrivent released preclinical data for firmonertinib, stating, "Reclinical findings for EGFR inhibitor firmonertinib showcased high resolution crystal structure data supporting the ongoing pivotal Phase 3 study in frontline EGFR exon 20 insertion mutant NSCLC." On the news of the Phase 3 FURVENT trial results, the price of Arrivent shares declined by $13.45 per share, or approximately 47.3%, from $28.46 per share on October 5, 2026 to close at $15.01 on October 6, 2026.

What Should I Do?

At this stage, no lawsuit has been filed. The investigation is ongoing to determine whether claims may be brought under federal securities laws.

If you purchased or otherwise acquired Arrivent 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.

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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 on Kirby McInerney LLP's website.

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Source: Kirby McInerney LLP