Exhibit 99.1 IMPERIAL PETROLEUM INC. IMPERIAL PETROLEUM INC. REPORTS THIRD QUARTER AND NINE MONTHS 2023 FINANCIAL AND OPERATING RESULTS ATHENS, GREECE, October 25, 2023 - IMPERIAL PETROLEUM INC. (NASDAQ: IMPP, the “Company”), a ship-owning company providing petroleum products, crude oil and dry bulk seaborne transportation services, announced today its unaudited financial and operating results for the third quarter and nine months ended September 30, 2023. OPERATIONAL AND FINANCIAL HIGHLIGHTS • Fleet operat ...