IMPP Imperial Petroleum Inc

Filed Pursuant to Rule 424(b)(3)
Registration Nos. 333-262264 and 333-262421

PROSPECTUS SUPPLEMENT NO. 9

(TO PROSPECTUS DATED April 8, 2022)

IMPERIAL PETROLEUM INC.

This is a supplement (“Prospectus Supplement”) to the prospectus, dated April 8, 2022 (“Prospectus”) of Imperial Petroleum Inc. (the “Company”), which forms a part of the Company’s Registration Statements on Form F-1 (Registration Nos. 333-262264 and 333-262421), as amended or supplemented from time to time.

On September 22, 2022, the Company furnished a Report on Form 6-K (the “Form 6-K”) to the U.S. Securities and Exchange Commission (the “Commission”) as set forth below.

This Prospectus Supplement should be read in conjunction with, and delivered with, the Prospectus and is qualified by reference to the Prospectus except to the extent that the information in this Prospectus Supplement supersedes the information contained in the Prospectus. This Prospectus Supplement is not complete without, and may not be delivered or utilized except in connection with, the Prospectus, including any amendments or supplements to it.

Investing in our securities involves a high degree of risk. See “Risk Factors” beginning on page 14 of the Prospectus for a discussion of information that should be considered in connection with an investment in our securities.

Neither the Securities and Exchange Commission nor any state securities commission has approved or disapproved of these securities or determined if this prospectus is truthful or complete. Any representation to the contrary is a criminal offense.

The date of this prospectus supplement is September 22, 2022.

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 6-K

REPORT OF FOREIGN PRIVATE ISSUER

PURSUANT TO RULE 13a-16 OR 15d-16

UNDER THE SECURITIES EXCHANGE ACT OF 1934

For the month of September 2022

Commission File Number 001-41095

IMPERIAL PETROLEUM INC.

(Translation of registrant’s name into English)

331 Kifissias Avenue Erithrea 14561 Athens, Greece

(Address of principal executive office)

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F.

Form 20-F  ☒            Form 40-F  ☐

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1):  ☐

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7):  ☐

INFORMATION CONTAINED IN THIS FORM 6-K REPORT

The press release issued by Imperial Petroleum Inc. on September 15, 2022, announcing the declaration of a dividend on its 8.75% Series A Cumulative Redeemable Perpetual Preferred Stock.