SMMT's Q3 Loss Wider Than Expected, Stock Down on Study Amendments

Core Insights - Summit Therapeutics (SMMT) reported a third-quarter 2025 loss per share of 31 cents, significantly wider than the Zacks Consensus Estimate of a loss of 14 cents, and compared to a loss of 8 cents in the same period last year [1][2][9] - The company currently has no marketed products, resulting in no recorded revenues for the quarter [2] - Adjusted research and development expenses rose to $90.5 million, a 184% increase year over year, primarily due to higher clinical costs [3] - Adjusted general and administrative expenses increased by 82% year over year to $12.9 million, driven by costs associated with developing ivonescimab [3] - As of September 30, 2025, the company had cash and short-term investments totaling $238.6 million, down from $297.9 million as of June 30, 2025 [4] Pipeline Developments - Summit has one pipeline drug, ivonescimab, a bispecific antibody targeting PD-1 and VEGF, currently undergoing three late-stage studies for non-small cell lung cancer (NSCLC) [5] - The company plans to submit a regulatory filing to the FDA by year-end for ivonescimab plus chemotherapy for adults with EGFR-mutated, locally advanced, or metastatic non-squamous NSCLC [6] - Data from the HARMONi study indicated a favorable trend in overall survival, despite not meeting the primary endpoint [6] - Additional data from the HARMONi-6 study showed ivonescimab reduced the risk of disease progression or death by 40% compared to BeOne Medicines' Tevimbra [7] - Major protocol amendments were announced for the HARMONi-3 study, which will now include separate analyses for squamous and non-squamous NSCLC [8] - The company is expanding ivonescimab's development to include a phase III study for unresectable metastatic colorectal cancer (CRC), with enrollment expected to start before year-end [12][13] Market Reaction - Shares of Summit fell nearly 5% following the announcement of the amended HARMONi-3 protocol, reflecting investor concerns over the changes and the wider-than-expected loss reported [9][10] - Year to date, the stock has risen over 12%, outperforming the industry average increase of 9% [10]