https://www.reuters.com/article/us-clear-secure-ipo/biometric-security-firm-clear-secure-targets-4-34-billion-valuation-in-u-s-ipo-idUSKCN2DZ123 >Clear Secure Inc, which uses biometric technology to validate identity, is looking to raise as much as $396 million through a U.S. initial public offering at a valuation of about $4.34 billion, according to a regulatory filing on Wednesday.