AnaptysBio (ANAB) 2025 Earnings Call Presentation

Rosnilimab (PD-1 depleter and agonist) in Rheumatoid Arthritis (RA) - Rosnilimab is well-positioned for the ~$20 billion U S RA market, which hasn't had a new mechanism approved since 2012[14] - In b/tsDMARD-naïve patients, Rosnilimab shows JAK-like efficacy, with 64% achieving CDAI LDA, 48% achieving ACR50, and 23% achieving ACR70[28] - In b/tsDMARD-experienced patients, Rosnilimab surpassed the 6-month Target Product Profile (TPP) and is comparable at mid/high dose to JAKs in all-active H2H study[30] - 83% of Week 28 CDAI LDA responders were still in response at Week 34, demonstrating durable responses for at least 2-months off-drug[33] - Synovial biopsies show ~90% reduction of PD-1+ T cells in the target issue with 400mg/600mg doses[39, 40] Rosnilimab in Ulcerative Colitis (UC) - Initial Phase 2 data for Rosnilimab in Ulcerative Colitis is expected in Q4 2025[2, 78] - Enrollment is ongoing in the Phase 2 trial for moderate-to-severe UC, with interim 6-month data expected in Q4 2025[60] - The primary endpoint of the UC trial is the change in modified Mayo score (mMS) vs placebo at Week 12[62] ANB033 (CD122 antagonist) - Phase 1 trial of ANB033 in healthy volunteers has been initiated, with an R&D event planned for H2 2025[63, 78] - ANB033 is designed to reduce pathogenic T cells and NK Cells by potently inhibiting IL-15 and IL-2 biology[63, 65, 66] Financial Position - The company has a strong capital position with ~$383 million in cash as of Q1 2025, expected to provide a cash runway through YE 2027[7, 69, 76]