Exhibit 99.1

Alumis Reports First Quarter 2026 Financial Results and
Highlights Recent Achievements
– Late-breaking oral presentation of Phase 3 envudeucitinib data in moderate-to-severe plaque psoriasis (PsO) at the 2026 American Academy of Dermatology (AAD) Annual Meeting demonstrating early and robust improvements in skin clearance, quality of life, and symptoms –
– Data showed robust PASI responses by Week 16, with significant continued improvements by Week 24 in PASI 90 (68.0%, 62.1%) and PASI 100 (41.0%, 39.5%) –
– Data continue to underscore envudeucitinib’s potential as a leading oral therapy for PsO; plans to submit NDA in 4Q 2026 remain on track –
– Potentially pivotal Phase 2b topline data for envudeucitinib in systemic lupus erythematosus (SLE) anticipated 3Q 2026 –
SOUTH SAN FRANCISCO, Calif., May 14, 2026 – Alumis Inc. (Nasdaq: ALMS), a late-stage biopharmaceutical company developing next-generation targeted therapies for patients with immune-mediated diseases, today reported financial results for the quarter ended March 31, 2026, and highlighted recent achievements and upcoming milestones.
"Alumis delivered a focused and productive first quarter, building on the Phase 3 clinical validation of envudeucitinib in moderate-to-severe plaque psoriasis and reinforcing the differentiated potential of maximal TYK2 inhibition," said Martin Babler, President and Chief Executive Officer of Alumis. "Late-breaking Phase 3 data at the 2026 American Academy of Dermatology Annual Meeting demonstrated leading skin-clearance outcomes and meaningful improvements in patient-reported quality-of-life measures, supporting a compelling emerging profile for physicians and patients, if approved, and further strengthening our confidence in envudeucitinib’s potential to reshape the psoriasis treatment landscape."
Babler added, "We remain on track for our NDA submission in the fourth quarter of this year, as well as the potentially pivotal LUMUS Phase 2b topline readout in SLE in the third quarter. With continued progress across both indications, envudeucitinib is emerging as a potential ‘pipeline in a pill’, supporting expansion into additional immune-mediated diseases. We are evaluating further indications under a unified TYK2 franchise strategy and expect to share further updates later this year."
First Quarter 2026 and Recent Highlights
Envudeucitinib: a next-generation, highly selective oral tyrosine kinase 2 (TYK2) inhibitor, in patients with moderate-to-severe plaque psoriasis
| ● | Late-breaking oral presentation of Phase 3 ONWARD1 and ONWARD2 envudeucitinib data at the 2026 American Academy of Dermatology (AAD) Annual Meeting (link to presentation) |