Major Shareholder Imperial Petroleum's Stake Diluted to 90.2% Following Reverse Split and New Share Issuances
CISS sits 25% above its 52-week low of $2.7 on light trading volume (0.1× avg).
Summary
Imperial Petroleum Inc., C3is Inc.'s controlling shareholder, updated its beneficial ownership to 90.2% following a reverse stock split and new share issuances, indicating ongoing dilution.
Key Events · Ownership and Investor Activity · CISS
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Controlling Stake Updated
Imperial Petroleum Inc. now beneficially owns 4,994,672 shares, representing 90.2% of C3is Inc.'s common stock.
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Impact of Reverse Stock Split
The filing reflects adjustments to the conversion price of Series A Convertible Preferred Stock and warrant exercise prices, following C3is Inc.'s 1-for-7 reverse stock split effective April 27, 2026.
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Share Issuances Cause Dilution
Imperial Petroleum's percentage ownership was diluted due to new share issuances by C3is Inc., indicating ongoing capital raising activities.
Analysis · CISS · Energy & Transportation
This Schedule 13D/A from Imperial Petroleum Inc., the controlling shareholder of C3is Inc., updates its beneficial ownership to 90.2% of common stock. The amendment reflects adjustments to the conversion price of Series A Convertible Preferred Stock and warrant exercise prices following C3is's 1-for-7 reverse stock split, which became effective on April 27, 2026. Crucially, the filing also indicates a dilution in Imperial Petroleum's percentage ownership due to new share issuances by C3is Inc. This suggests the company is actively raising capital, likely through its existing At-The-Market (ATM) program, which will continue to dilute existing shareholders. For a nano-cap company, such significant capital raising and the resulting dilution, even impacting a controlling shareholder, is a critical event for investors to monitor.
How filings like this one have moved
In the 30 days to Nov 4, 2026, 41.4% of the 1217 measured filings Wiseek scored 8 moved their stock by 5% or more by the next session's close. The median move was -0.35%. These are measured outcomes after filings of this importance, not a forecast for this one.
Measured one observation per ticker per day, after exclusions. Current figures: Filing Impact Tracker · open dataset
At the time of this filing, CISS was trading at $3.37 on NASDAQ in the Energy & Transportation sector, with a market capitalization of approximately $1.8M. The 52-week trading range was $2.70 to $831.59. This filing was assessed with negative market sentiment and an importance score of 8 out of 10.