X0609 4 2026-10-19 0001876581 Imperial Petroleum Inc./Marshall Islands IMPP 0001328921 Vafias Harry true IMPERIAL PETROLEUM INC. 331 KIFISSIAS AVENUE KIFISSIA ATHENS GREECE J3 14561 GREECE true true false false CEO and President false Common Stock 2026-10-19 4 M false 117188 3.20 A 3918196 D Common Stock 3307452 I By Arethusa Properties LTD Common Stock 6991255 I By Flawless Management Inc. Stock Option (Right to Buy) 3.20 2026-10-19 4 M false 117188 0 D 2035-01-08 Common Stock 117188 117187 D Shares held by Arethusa Properties LTD ("Arethusa"). The Reporting Person controls Arethusa and may be deemed to beneficially own the securities held by Arethusa by virtue of such control. The Reporting Person disclaims beneficial ownership of such securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), except to the extent of his pecuniary interest therein, if any. This report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for purposes of Section 16 of the Exchange Act or for any other purpose. Shares held by Flawless Management Inc. ("Flawless"). The Reporting Person controls Flawless and may be deemed to beneficially own the securities held by Flawless by virtue of such control. The Reporting Person disclaims beneficial ownership of such securities for purposes of Section 16 of the Exchange Act, except to the extent of his pecuniary interest therein, if any. This report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for purposes of Section 16 of the Exchange Act or for any other purpose. 50% of the shares subject to such option are vested and exercisable. The remaining 50% of the shares subject to such option vest and become exercisable on January 8, 2027, subject to the Reporting Person's continuous service to the Issuer on such date. /s/ Harry Vafias 2026-10-21