Angel Liquidity helps angel investors discreetly and responsibly liquidate their positions in startups. They analyze the startup and investment documents to ensure a sale is possible and compliant. Angel Liquidity works with startup boards and uses their industry connections to facilitate minimal stress sales that clean up capital tables. The process involves signing NDAs, conducting due diligence, performing valuations, making offers according to agreements, and completing sales and filings. Key documents needed include Angel Liquidity's NDA, a consulting agreement, share certificates, and investment records between the angel and startup.