Key Takeaways
- Ambrook, an AI-native financial management platform for independent businesses, raised a $30 million Series B led by Lachy Groom, bringing its total capital raised to $59 million.
- Backers include Thomson Reuters Ventures, Thrive Capital, Field Ventures and Cameron Ventures, plus Notion co-founder Akshay Kothari, Gusto co-founder Tomer London and Vercel CEO Guillermo Rauch.
- Ambrook grew from roughly 2,500 customers in July 2025 to more than 8,000 businesses across all 50 states.
- About half of its customers are digitizing their finances for the first time, moving from paper records or spreadsheets; nearly a third use the platform only through its mobile app.
- The Denver-based company will use the funding to expand accounting, payments and cash management tools and its AI features across agriculture, trucking, construction and property management.
Ambrook, a financial management platform built for independent owner-operator businesses, has raised a $30 million Series B led by investor Lachy Groom. The round brings the Denver-based company’s total capital raised to $59 million and will fund product development across agriculture, trucking, construction and property management.
Inside Ambrook’s Series B
The round drew participation from Thomson Reuters Ventures, Thrive Capital, Field Ventures and Cameron Ventures, along with Notion co-founder Akshay Kothari, Gusto co-founder Tomer London and Vercel chief executive Guillermo Rauch. Ambrook’s customer base grew from roughly 2,500 businesses in July 2025 to more than 8,000 across all 50 states. After starting in agriculture, the platform now serves more than 1,000 trucking businesses alongside hundreds of contractors and property managers, much of that growth coming from farmers who are also truckers, landlords and contractors.
“Building a more prosperous and resilient America starts by helping the country’s most vital independent businesses better manage their finances,” said Mackenzie Burnett, CEO and co-founder of Ambrook. “When business owners have tools built for what they do, they can clearly see their unit economics and understand which next steps will increase their margin. That results in stronger decisions for their families, communities and land.”
Software built for owner-operators
Founded in 2020, Ambrook combines accounting, payments and cash management in a single platform aimed at businesses that run multiple profit-and-loss statements and carry heavy balance sheets. Transaction data flows in automatically from connected banks, cards and loan accounts, and the company’s AI scans receipts, drafts bills and suggests how to categorize transactions, with the owner approving each step. Categories map to Schedule F and Schedule C to simplify tax preparation. About half of Ambrook’s customers are moving off paper records or spreadsheets for the first time, and nearly a third use the service only through its mobile app each month.
Why investors backed Ambrook
“There’s a common assumption in technology that every business has already adopted modern software, but that’s simply not true,” said Lachy Groom. “Millions of essential businesses across local economies are still offline because current software doesn’t fit their needs. Ambrook has earned the trust to bring these businesses online, creating the financial foundation they’ll build on for years to come.”
The company said the new capital will advance its AI capabilities and its integrated payments and cash management tools while keeping owner-operators in control of the automation.
