Humanigen, Inc. Lawsuit Submission Form

(i) Humanigen’s lead product candidate, lenzilumab, posed risks to patients in addition to those disclosed by defendants; (ii) lenzilumab was not the only immunomodulator currently in late-stage clinical trials; (iii) lenzilumab was less effective in treating hospitalized COVID-19 patients than defendants had represented; (iv) as a result, the U.S. Food and Drug Administration was unlikely to approve the lenzilumab Emergency Use Authorization and the ACTIV-5/BET-B study was unlikely to meet its primary endpoint; (v) accordingly, lenzilumab’s clinical and commercial prospects were overstated; and (vi) as a result, the Company’s public statements were materially false and misleading at all relevant times.