Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2024 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-42143 Alumis Inc. (Exact name of registrant as specified in its charter) Delaware 86-1771129 (State or other j ...

Exhibit 99.1 Alumis Reports Second Quarter 2024 Financial Results and Highlights Recent Development and Corporate Achievements – Initiated patient dosing in ESK-001 Phase 3 ONWARD clinical program in moderate-to-severe plaque psoriasis – – Initiated Phase 1 clinical trial for A-005 in healthy participants – – Completed IPO and private placement raising gross proceeds of $250M – SOUTH SAN FRANCISCO, Calif., August 13, 2024 – Alumis Inc. (Nasdaq: ALMS), a clinical-stage biopharmaceutical company developing or ...