JSPR - Earnings announcements

67% of additional patients (n=6) enrolled in the BEACON study achieved a complete response at 12 weeks with a mean UAS7 reduction of 31 points  75% of CSU participants (n=36) enrolled in the open label extension study achieved a complete response or well controlled disease at 12 weeks With a median duration of follow up of more than 200 days on 63 participants in the open label extension study, KIT related AEs were low in frequency and predominantly low-grade events that resolved while on study BEACON and open label extension data sets are now sufficient to select doses for the Phase 2b study of briquilimab in CSU planned to commence in the second half of 2026 Company to host conference

Reductions in airway hyperresponsiveness and suppressed eosinophilic response at both 6 weeks and 12 weeks observed after a single 180mg dose of Briquilimab in the ETESIAN Study Preliminary data from ETESIAN study supports further development of briquilimab in asthma Jasper also announces completion of internal BEACON study investigation noting no deviations or issues with drug product utilized Jasper to host conference call and webinar today at 8:00 a.m. ET REDWOOD CITY, Calif., Dec. 02, 2025 (GLOBE NEWSWIRE) -- Jasper Therapeutics, Inc. (NASDAQ:JSPR) (Jasper), a clinical stage biotechnology company focused on development of briquilimab, a novel antibody therapy targeting KIT (CD117)

11 of 12 participants (92%) enrolled in the 180mg cohort achieved a complete response 12 of 12 participants (100%) in the 180mg cohort achieved a clinical response Tryptase levels below the lower limit of quantification observed in 10 of 12 participants (83%) No serious adverse events and no grade 3 or higher adverse events reported in the 180mg cohort Company to host conference call and webinar on Monday, June 16, at 8:00 a.m. EDT REDWOOD CITY, Calif., June 14, 2025 (GLOBE NEWSWIRE) -- Jasper Therapeutics, Inc. (NASDAQ:JSPR) (Jasper), a clinical stage biotechnology company focused on development of briquilimab, a novel antibody therapy targeting KIT (CD117) to address mast cell drive

Rapid onset of deep and durable clinical responses observed across multiple dosing cohorts with a favorable safety profile Mean change in UAS7 from baseline of -26.6 observed in the 240mg single dose cohort at 8 weeks, multiple dosing regimens ≥120mg demonstrated UAS7 change of more than -25 points 100% (N=3) Complete Responses (UAS7 = 0) observed in the 240mg single dose cohort at 8 weeks and 66% maintained Well Controlled disease at 12 weeks Serum tryptase reductions below the lower limit of quantification observed at multiple dose levels Data supports commencement of CSU registrational program expected to commence second half of 2025 Company t

14 of 15 participants enrolled achieved a clinical response 10 of 12 participants in the 120mg cohort achieved a complete response No serious adverse events; no grade 3 or higher adverse events reported Initial data from BEACON study expected week of January 6th, 2025, including 180mg Q8W cohort Company to host conference call and webinar today at 8:00 a.m. EDT REDWOOD CITY, Calif., Oct. 14, 2024 (GLOBE NEWSWIRE) -- Jasper Therapeutics, Inc. (NASDAQ:JSPR) (Jasper), a clinical stage biotechnology company focused on development of briquilimab, a novel antibody therapy targeting c-Kit (CD117) to address mast cell driven diseases such as chronic spontaneous urticaria (CSU), chronic induci