Hope’s using the Pym Particle for global change.
The shot of Hope being a CEO quickly transition to a red carpet event, identified as the Humanitarian Global Service Awards on the backdrop, where Scott and Hope walk the paparazzi filled entrance.
Unlike the previous two Ant-Man films, Quantumania did not film at Pinewood Studios in Atlanta. Instead they shot at the original Pinewood Studios outside London. That means that scenes with any of the principal actors (besides Paul Rudd–who shot his opening and closing scenes in San Pedro, CA) were probably filmed near the studios.
What appears to be part of a large venue, like the Chase Center in San Francisco, is actually the Design Museum of London, a contemporary museum filled with everyday objects that is “devoted to contemporary design in every form, from architecture and fashion to graphics, product and industrial design.” This location also doubled as the interior of the PymVanDyne Foundation offices.
(Ant-Man and The Wasp: Quantumania, 2023)