Business b1Bank is acquiring a Texas-based SBA lender service provider By Dillon Lowe - February 1, 2024 (File photo) FacebookTwitterLinkedinEmailPrint Baton Rouge-based Business First Bancshares Inc., the holding company for b1Bank, is growing yet again. The company has entered into a definitive agreement to acquire Waterstone LSP. Waterst… Already an INSIDER? Sign in.