Material Event (Form 8-K)

Item 8.01. Other Events.

On December 19, 2025, Eve Holding, Inc. (the "Company") issued a press release announcing the completion of the first flight of its uncrewed full-scale electric vertical take-off and landing ("eVTOL") aircraft prototype at Embraer S.A.'s test facility in Gavião Peixoto, state of São Paulo, Brazil.

The inaugural flight initiated the Company's flight test phase and confirmed the integration of key systems, including the fifth-generation fly-by-wire concept and the fixed-pitch lifter rotors. The Company intends to perform multiple flights following the first hover flight, gradually expanding the transition into full wingborne flights throughout 2026.

The Company intends to manufacture six conforming prototypes to conduct the flight test campaign, in furtherance of the Company's goal of obtaining certification. The Company continues to engage with Brazil's Civil Aviation Agency (ANAC), which is the primary certifying authority for the Company's eVTOL, and other regulators and validating authorities, including the Federal Aviation Administration (FAA) and the European Union Aviation Safety Agency (EASA), to advance the certification process.