Stealth startups are companies operating in quiet mode — no website, no press, no public announcement. Finding them early gives you a massive sourcing edge. Here's how.
Signal 1: Public GitHub activity. Many stealth companies ship code publicly before launching. GitDealFlow tracks these repos and surfaces teams with high engineering velocity but no public profile.
Signal 2: Founder LinkedIn changes. Watch for founders who leave a senior role at a big company and update their LinkedIn to 'Building something new' or 'Stealth'.
Signal 3: Hiring patterns. Stealth companies hire small founding teams quietly. Watch for clusters of senior engineers leaving the same company within a few months.
Signal 4: Domain registrations. Tools like Domain Big Data and Expired Domains can reveal new company domains before they launch.