Imperial Petroleum Inc./Marshall Islands (IMPPP) shareholders
Close on Oct 30, 2026Market cap $227.26MP/E 3.9Yield –
Ownership
Who owns Imperial Petroleum Inc./Marshall Islands's shares
Holders of more than 5%
Latest Schedule 13D (active) or 13G (passive) filed by each holder
| Holder | Shares | % of class | Filing | As of |
|---|---|---|---|---|
| Harry N. Vafias Joint filing with Flawless Management Inc. (15.70%), Arethusa Properties LTD (7.40%) | 14,266,903 | 31.90% | 13D (active) amendment | Jun 22, 2026 |
| Anson Management GP LLC Joint filing with Anson Funds Management LP (7.80%), Tony Moore (7.80%) and 3 more | 3,466,680 | 7.80% | 13G (passive) amendment | Mar 31, 2026 |
| Empery Asset Management, LP Joint filing with Ryan M. Lane (7.13%) | 3,182,951 | 7.13% | 13G (passive) | Dec 31, 2025 |
| Arethusa Properties LTD. | 2,083,686 | 9.00% | 13G (passive) | Oct 16, 2023 |
| Joseph Jacobs Joint filing with Wexford Capital LP (5.93%), Wexford GP LLC (5.93%) and 1 more | 1,799,652 | 5.93% | 13G (passive) | Mar 31, 2025 |
Officers, directors and major owners
People who filed Forms 3, 4 or 5 in the last two years
| Name | Role | Shares owned | Latest filing |
|---|---|---|---|
| Harry Vafias | CEO and President, Director | 14,099,715 | Aug 21, 2026 |
| Ifigeneia Sakellari | Interim CFO | 66 | Mar 18, 2026 |
| Ioannis Kostogiannis | Director | 16,469 | Mar 18, 2026 |
| Georgios Xiradakis | Director | 19,375 | Mar 18, 2026 |
Insider trades
Common stock transactions reported on Form 4, newest first
| Insider | Date | Transaction | Shares | Price | Value | Shares after |
|---|---|---|---|---|---|---|
| Harry Vafias CEO and President, Director | Aug 21, 2026 | Option exercise | +149,502 | $3.01 | $450.00K | 3,801,008 |
| Harry Vafias CEO and President, Director | Jun 22, 2026 | Gift | +33,627 | – | – | 3,651,506 |
| Harry Vafias CEO and President, Director | Jun 22, 2026 | Award | +440,000 | – | – | 3,617,879 |
Awards, option exercises, tax withholding and gifts are shown alongside open-market buys and sales. Each name links to the filing on SEC EDGAR.
Short interest
Shares sold short and not yet bought back, as of Oct 15, 2026 (FINRA, reported twice a month)
Shares sold short, last 12 months
Short sale volume counts trades marked short on any given day, including market-maker hedging, so it runs far higher than the share of Imperial Petroleum Inc./Marshall Islands's stock actually held short. Settlement fails (shares not delivered on time) peaked at 963 shares on Aug 12, 2026 over the last 90 days.