Sandstone raises $30 million in Series A funding to serve in-house legal teams with workflow automation and case management tools

Sandstone announced $30 million in Series A funding led by Lightspeed Venture Partners, with participation from Sequoia, Mantis VC, SV Angel, Operator Partners, Kearny Jackson, Daybreak Ventures, Litquidity Ventures, and others. The round comes six months after a $10 million seed round in January led by Sequoia.

The platform focuses on in-house legal departments at small and mid-sized businesses, automating task routing and triage from intake channels like Slack, email, and Jira, then enabling custom workflows for drafting, reviewing, and legal analysis — rather than focusing on legal reasoning systems as competitors Harvey and Legora do.

Sandstone competes in a market where frontier AI labs are expanding legal offerings; Anthropic added new tools to Claude for Legal in May for case law searches and deposition prep.