Callisto
Data-room red-flag review, DDQ drafting and IC memos; now 73 Strings
Callisto, a Paris company, built AI tools for private equity deal teams that scan data rooms for red flags, answer DDQs and RFPs by reusing a firm's prior responses and documents, and draft investment memos in house style. 73 Strings acquired it in September 2026.
GAII take
Folds into 73 Strings' valuation stack, creating a pre- and post-deal offering; check European client support continuity after integration.
Folds into 73 Strings' valuation stack, creating a pre- and post-deal offering; check European client support continuity after integration.
- Website
- callistoapp.com
- Headquarters
- Paris, France
- Company type
- Startup
- Funding
- Acquired
- Status
- Acquired — Acquired by 73 Strings (Sep 2026)
- Founders
- Charles Farhat, William Profit
- Also in
- Risk, Compliance & Operations
- Buyer
- Private equity
- Asset class
- Private equity
- Workflow
- Research & diligenceFundraising & deal originationReporting & IR
- Ai capability
- Document extractionGenerative contentSearch & RAG
- Delivery
- SaaS application
GAII ID GAII-T0081 · Updated 2026-10-22 · Compiled from public sources for educational and informational purposes. Not investment advice.