Symbol
CISS on Nasdaq
Investment type
Equity / Common Stock, par value $0.01 per share
Latest Disclosed Shares Owned
56,176 shares
Security Ownership %
5.2%

Alta Partners LLC ownership in C3is Inc. Common Stock, par value $0.01 per share (CISS)

27 Feb 2026 - Alta Partners LLC has filed an SCHEDULE 13G form with the Securities and Exchange Commission (SEC) disclosing ownership of 56,176 shares of C3is Inc. Common Stock, par value $0.01 per share (CISS). This represents 5.2% ownership of the company. This is the first filing by Alta Partners LLC disclosing ownership of C3is Inc. Common Stock, par value $0.01 per share (CISS).