PostSig

PostSig offers what it calls post-signature operational intelligence: a system that connects agreements, amendments, approvals, invoices and related operational records into a single record so that both people and AI systems can determine which terms currently govern. The platform is designed to reconstruct the history behind a business decision and resolve which provisions apply at a given moment, with every conclusion linked back to the underlying agreements, records and provisions that support it.

The product is organized around three areas. Contract Performance Management addresses spend, tracking obligations from signature through renewal and surfacing items such as vendor performance, invoice variance against master agreements and pricing schedules. Investor Rights Intelligence addresses investing, maintaining a connected rights record covering ownership position, pro rata eligibility, major investor tests, and the notices and decisions attached to those rights. The Intelligence Gateway addresses operations, providing approved systems and agents scoped access to PostSig via an MCP server for source-backed answers. Illustrative use cases published by the company include determining the follow-on investment needed to maintain an ownership percentage, identifying invoice discrepancies against a master agreement and its amendments, and confirming whether pro rata rights exist in a portfolio company.