Ambrook secured a $30 million Series B led by Lachy Groom, with participation from Thomson Reuters Ventures, Thrive Capital, and others, to expand its AI powered financial platform beyond agriculture into trucking, construction, and property management.
Ambrook’s $30 million Series B, led by Lachy Groom, brings the company’s total funding to approximately $59 million following a $26.1 million Series A in July 2025.
What is Ambrook?
Ambrook is an AI native financial management platform built for independent, owner operated businesses in the “real economy”, primarily agriculture and ranching, with rapid organic expansion into trucking, general contracting, skilled trades, and property management. Founded in 2020 by Mackenzie Burnett (CEO), Dan Schlosser (Head of Product), and Jeff Anders (Head of Design), it addresses the limitations of general tools like QuickBooks for multi entity, multi P&L operations that involve complex inventory (e.g., livestock that is born, grows, and dies), seasonal cash flows, Schedule F/C tax needs, and field-based work.
The Round Details
- Amount and stage: $30M Series B.
- Lead: Lachy Groom (solo capitalist / LGF; former Stripe Issuing executive and co-founder of robotics AI company Physical Intelligence).
- Participants: Thomson Reuters Ventures, Thrive Capital (returning from Series A), Field Ventures, Cameron Ventures, plus angels including Akshay Kothari (Notion co-founder), Tomer London (Gusto co-founder), and Guillermo Rauch (Vercel CEO).
- Prior capital: ~$29M by the time of the Series A (including the $26.1M round led by Thrive Capital and Dylan Field of Field Ventures, with Homebrew and others). Total post Series B is consistently reported as $59M.
The company is headquartered with a presence in Denver (and offices/nodes in New York and San Francisco). Employee counts in recent profiles sit around the high 50s.
Customer base grew from roughly 2,500 businesses in July 2025 to more than 8,000 across all 50 U.S. states by the time of the Series B, driven heavily by word of mouth within farming communities and adjacent operations. Agriculture remains the core, but the platform already serves more than 1,000 trucking businesses plus hundreds of general contractors and property managers. Expansion into non-ag categories often began organically: early customers (such as an Arizona cattle feeder) requested the software for their other non farm businesses (trucking, services, etc.), revealing broader product market fit for multi enterprise owner operators.
About half of customers are digitizing from paper or spreadsheets for the first time; many others are switching from or supplementing QuickBooks. Nearly one third of users access the platform exclusively via the mobile app each month. Customer outcomes cited include securing $12M in additional lower rate credit (McKinney Land & Cattle in Oklahoma), discovering hidden profitability (or losses) in side enterprises, doubling sales with better cash visibility, and significant time savings on bookkeeping and tax prep.
Ambrook unifies bookkeeping, payments (via Ambrook Wallet, partnered with Stripe), invoicing, cash management, inventory tracking, and reporting in one system designed for owner operators rather than desk bound accountants. Key elements include:
- Automatic bank/card/loan feeds with AI that scans and itemizes receipts, drafts bills from emails, and suggests categorizations (owner retains final approval for audit ready records).
- Enterprise-, project-, or location level profitability tracking in industry language (bushels, miles, etc.).
- Direct mapping to tax schedules and multi entity support.
- Mobile first workflows for field use.
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It is often described as a “QuickBooks rival” or “killer” for these segments because general purpose software struggles with the complexity and mobility of these businesses. The company emphasizes high touch onboarding, education, and support, and is developing fuller services and mid market features (e.g., deeper payroll and operations capabilities) to move upmarket within agriculture while accelerating horizontal expansion.
Capital will fund product development across the existing verticals (agriculture, trucking, general contracting, skilled trades, property management), continued AI automation, expanded payments and cash management tools, and scaling of customer success/services. The longer term thesis is to serve the underserved “real economy” businesses that produce, build, and move physical goods (many still running multi million dollar operations on paper) and to strengthen their financial resilience so owners can make better decisions for families, communities, and land.
Groom’s lead investment aligns with an appreciation for physical world operators and the gap left by software designed for more conventional SMBs. Thomson Reuters Ventures’ participation underscores the accounting/software evolution angle. Returning capital from Thrive and Field Ventures signals continuity after the Series A growth phase. The round reflects confidence in organic traction, product depth for multi P&L complexity, and a large addressable market of independent businesses that mainstream tools have under served.
In short, the Series B positions Ambrook to scale a specialized, AI augmented financial operating system from its agricultural beachhead into adjacent real economy verticals while deepening features for larger operators, capitalizing on proven demand, strong retention signals via word of mouth, and a clear product differentiation against legacy accounting software.
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