Ioannis Kostogiannis - 18 Mar 2026 Form 3 Insider Report for Imperial Petroleum Inc./Marshall Islands (IMPP)

Role: Director
Signature: /s/ Nina Pyndiah, Attorney-in-Fact
Issuer symbol: IMPP
Transactions as of: 18 Mar 2026
Net transactions value: $0
Form type: 3
Filing time: 18 Mar 2026, 15:54:05 UTC
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Kostogiannis Ioannis	Director	IMPERIAL PETROLEUM INC., 331 KIFISSIAS AVENUE ERITHREA, ATHENS, GREECE	/s/ Nina Pyndiah, Attorney-in-Fact	18 Mar 2026	0002118310

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
holding	IMPP	Common Stock						16,469	18 Mar 2026	Direct
holding	IMPP	8.75% Series A Cumulative Redeemable Perp. Preferred Stock						235	18 Mar 2026	Direct

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
holding	IMPP	Stock Option (Right to Buy)							18 Mar 2026	Common Stock	3,000	$3.60	Direct	F1
holding	IMPP	Stock Option (Right to Buy)							18 Mar 2026	Common Stock	12,500	$1.60	Direct	F2

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	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 April 12, 2026, subject to the Reporting Person's continuous service to the Issuer on such date.
F2	Fully vested.

Remarks:

Exhibit 24 - Power of Attorney