The insomnia ransomware group listed The Vant Group on its data leak site on 2026-06-12. Country: US Sector: Professional Services Domains named: www.thevantgroup.com Claim as published on the leak site: The Vant Group, founded in 1999, is an M&A advisory firm serving businesses up to $250M in revenue. It provides valuations, sell/buy-side advisory, and employee/partner buyouts, leveraging experienced professionals. Clients are mainly entrepreneurs and owners.