Exhibit 99.1 MARAVAI LIFESCIENCES REPORTS FOURTH QUARTER AND FULL YEAR 2023 FINANCIAL RESULTS Continued Focus on Expanding Product Portfolio, Market Leadership and Innovation SAN DIEGO, Calif., — February 22, 2024 — Maravai LifeSciences Holdings, Inc. (Maravai) (NASDAQ: MRVI), a global provider of life science reagents and services to researchers and biotech innovators, today reported financial results for the fourth quarter and full year ended December 31, 2023, together with other business updates. Recent ...