Private Deal Data platforms provide verified transaction terms, valuation multiples, and deal activity for private market transactions — M&A, venture capital, private equity, and growth investments — that are not available through public filings. Core capabilities include deal database search and filtering, transaction comparables and multiples, sector and geography coverage, buyer and seller identification, deal volume and trend analysis, and integration with financial modeling and CRM systems. The category spans private market data providers (PitchBook, Preqin, CB Insights, Dealogic) and sector-specific deal databases serving corporate development, investment banking, and venture capital.