Lassie Raises $35M Series A to Automate Back-Office Admin
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Lassie, an AI automation company based in San Francisco, California, has raised $35 million in a Series A round led by Andreessen Horowitz. The capital will help the company widen its platform as it looks beyond healthcare toward a broader goal of helping small businesses run with far less administrative overhead.
The financing, announced on June 3, 2026, brings Lassie’s total funding to $47 million. Alongside Andreessen Horowitz, the round drew participation from Night Capital, Superhuman founder Rahul Vohra, Plaid co-founder and CEO Zach Perret, Wise co-founder Taavet Hinrikus, Gokul Rajaram, and Reforge co-founder and CEO Brian Balfour.
The company sits in a newer category of enterprise software, one that moves past workflow management and automation tools toward autonomous systems that can finish operational tasks on a business’s behalf. Instead of helping employees do administrative work faster, Lassie aims to remove parts of that work altogether.
Its first market is healthcare, specifically independent medical and dental practices that carry a heavy administrative load tied to insurance reimbursement. Lassie’s software logs into insurance portals, pulls reimbursement details, reconciles payments against a practice’s records, updates core systems, and verifies deposits. These are tasks that have traditionally demanded a great deal of manual effort.
The company says its platform is now running in more than 700 practices across 49 states and saves customers over 250,000 hours of labor each year. Andreessen Horowitz General Partner Alex Rampell is joining the company’s board as part of the deal.
The new money will go toward expanding the platform’s capabilities and reaching more customers. While healthcare is the current focus, Lassie’s longer-term plan is to apply its autonomous workflows to other small business categories that still depend on labor-heavy administrative processes. The company was founded by former Robinhood and Coinbase product manager Steijn Pelle and former Superhuman product leader Frederic Renken.