Invivyd reported Q4 2025 earnings, highlighting strategic progress in monoclonal antibody prophylaxis as an alternative to COVID-19 vaccine boosting. The company's Declaration study for VYD2311 reached target enrolment of approximately 1,770 subjects, with mid-year 2026 remaining the target for pivotal data. PEMGARDA revenue grew 31% sequentially, supporting infrastructure development ahead of a potential VYD2311 launch. Management expects to decide on expanding the trial by roughly 30% in April to ensure statistical power if community attack rates fluctuate. The company reported cash of $226.7 million, providing runway through the mid-2026 data readout. Invivyd is expanding into long COVID and post-vaccine syndrome, whilst developing RSV and measles programmes with a paediatric-first approach. Management cited COVID-19 community attack rates as the primary external risk factor.

Invivyd has appointed Michael Mina, M.D., Ph.D., as Chief Medical Officer. Dr Mina is a former assistant professor of epidemiology, immunology and infectious disease at Harvard T.H. Chan School of Public Health and pathology at Harvard Medical School and Brigham and Women's Hospital. Dr Mina gained prominence during the COVID pandemic, advising governments on testing policies and leading the US government's Home Test-to-Treat Programme. His research includes discovering measles-induced "immune amnesia" and investigating antibody responses to vaccines and pathogens. He has published over 100 scientific papers with more than 10,000 citations. The appointment comes as Invivyd works to expand its pipeline of monoclonal antibodies for infectious disease prevention, including COVID, RSV and measles.

Invivyd reported fourth quarter 2025 net product revenue of $17.2 million for PEMGARDA (pemivibart), representing 25% year-over-year growth and 31% quarter-over-quarter growth. Full-year revenue more than doubled whilst operating expenses were reduced by nearly half. The company ended 2025 with $226.7 million in cash after raising over $200 million in financing transactions during the second half of the year. Invivyd has initiated the DECLARATION Phase 3 pivotal trial of VYD2311, a vaccine-alternative antibody to prevent COVID, with top-line data expected mid-2026. The FDA granted Fast Track designation for VYD2311 in December 2025. The trial has achieved full enrolment and an independent data monitoring committee has recommended allowing pregnant and breastfeeding women to participate. A potential trial re-sizing decision could occur in April.