Athanasios Tsiakmakis

Holdings History for C3is Inc. - Common Stock, par value $0.01 per share (CISS)

Symbol: CISS on Nasdaq
Investment type: Equity / Common Stock, par value $0.01 per share
Latest Disclosed Shares Owned: 400,000 shares
Security Ownership %: 5%

Athanasios Tsiakmakis ownership in C3is Inc. Common Stock, par value $0.01 per share (CISS)

13 Jan 2026 - Athanasios Tsiakmakis has filed an SCHEDULE 13G/A form with the Securities and Exchange Commission (SEC) disclosing ownership of 400,000 shares of C3is Inc. Common Stock, par value $0.01 per share (CISS). This represents 5% ownership of the company. In their previous filing dated 28 Oct 2025, Athanasios Tsiakmakis had reported owning 155,000 shares, indicating an increase of +158%. .

Reporting Name	Ownership %	Change	Value $	Shares owned	Change	Activity %	Price	Form	Report date	Filing time
Athanasios Tsiakmakis	5%	-67%	$688,000	400,000	+245,000	+158%	$1.72	13G/A	09 Jan 2026	13 Jan 2026, 16:30
Athanasios Tsiakmakis	14%		$330,150	155,000			$2.13	13G	16 Sep 2025	28 Oct 2025, 17:00