Flex announced a $70 million Series B1, led by Ryan Smith and Ryan Sweeney's Halo Fund with participation from Portage Ventures, Wellington, Crosslink Capital, 53 Stations, Titanium Ventures, Spice, Florida Funders, Spice, and others. The round comes just months after the company's $60 million Series B in December 2025. Annualized revenue increased 3x since then as Flex accelerated private banking for high-net-worth business owners globally.