Imperial Petroleum Inc./Marshall Islands

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

Symbol: CISS on Nasdaq
Investment type: Equity / Common Shares, par value $0.01
Latest Disclosed Ownership: 6M shares
Security Ownership: 68.8%

Imperial Petroleum Inc. ownership in C3is Inc. Common Shares, par value $0.01 (CISS)

2025-10-10 - Imperial Petroleum Inc. has filed an SCHEDULE 13D/A form with the Securities and Exchange Commission (SEC) disclosing ownership of 6M shares of C3is Inc. Common Shares, par value $0.01 (CISS). This represents 68.8% percent ownership of the company. In their previous filing dated 2025-04-15, Imperial Petroleum Inc./Marshall Islands had reported owning 4.94M shares, indicating an increase of 21.6% percent.

Reporting Name	Ownership %	Change	Value $	Shares owned	Change	Activity %	Price	Form	Report date	Filed at
Imperial Petroleum Inc.	68.8%	-20.7%	$13.7M	6M	+1,064,329	+21.6%	$2.28	13D/A	10/9/2025	10 Oct 2025 17:00:03
Imperial Petroleum Inc.	86.8%		$18.6M	4.94M			$3.76	13D/A	4/11/2025	15 Apr 2025 20:00:04