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Companies

Sandstone

Contract and intake software for in-house legal teams

Raised to date

$39.6M

of $41.3M offered across 1 Form D filing

Still open
$1.8M
Investors
30
Last filed
May 8, 2026

About

Sandstone builds an AI software platform for in-house legal departments. It centralizes a company's legal documents, counterparties and past decisions, routes legal requests from tools like Slack, Outlook and Salesforce, and runs AI agents that draft, redline and triage contracts. The Brooklyn company launched in January 2026 with a Sequoia-led seed round and later raised a Series A led by Lightspeed.

Built for in-house legal teams rather than law firms, with a legal knowledge layer that pulls business context from the email, CRM and chat tools a company already uses.

Funding

  • EquityFiled May 8, 2026Form D
    $39.6M/ $41.3M

Product

Sandstone

Legal software

A legal relationship management platform for in-house legal departments that combines a document and knowledge repository, request intake and triage, and AI agents for drafting and redlining.

  • Repository and knowledge management with playbooks
  • Intake, triage and matter management
  • Agentic workflows for redlining, drafting and comment replies

Built for

In-house legal departments at mid-size and enterprise companies (general counsel, legal operations)

People on file