Steve Stagner, CEO of Current, Thrive Holdings' AI accounting roll-up.Thrive HoldingsTed Larson started his accounting practice in Bellingham, Washington in 1949 the old-fashioned way: one proprietor, one office, one client at a time. In the ensuing years, Larson Gross grew into a regional accounting powerhouse with five offices, 200 employees and tens of millions in annual revenue.Then in 2025, the firm’s partners did something that normally makes employees of regional businesses anxious: they ...