Harry Vafias - 21 Aug 2026 Form 4 Insider Report for Imperial Petroleum Inc./Marshall Islands (IMPP)

Reporting relationship: CEO and President, Director
Issuer ticker: IMPP
Reported as of: 21 Aug 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 21 Aug 2026, 16:10:03 UTC
Prior SEC filing: 24 Jun 2026
Source filing: View source filing
Reporting owner signature: /s/ Harry Vafias

Key filing fact

Harry Vafias filed Form 4 for Imperial Petroleum Inc./Marshall Islands (IMPP) on 21 Aug 2026.

Key facts

This page summarizes Harry Vafias's Form 4 filing for Imperial Petroleum Inc./Marshall Islands (IMPP).
2 reported transactions and 1 derivative row are listed below.
Accepted by SEC: 21 Aug 2026, 16:10.

Change

Previous filing in this sequence was filed on 24 Jun 2026.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001328921 Primary reporting owner

Vafias Harry

Relationship: CEO and President, Director
Address: IMPERIAL PETROLEUM INC., 331 KIFISSIAS AVENUE KIFISSIA, ATHENS, GREECE
Signature: /s/ Harry Vafias
Signature date: 21 Aug 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

IMPP transaction

Common Stock

Options Exercise

Transaction value
Shares: +149,502
Change %: +4.1%
Price: $3.01^*
Shares after: 3,801,008
Date: 21 Aug 2026
Ownership: Direct

IMPP holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 3,307,452
Date: 21 Aug 2026
Ownership: By Arethusa Properties LTD
Footnotes: F1

IMPP holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 6,991,255
Date: 21 Aug 2026
Ownership: By Flawless Management Inc.
Footnotes: F2

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

IMPP transaction Derivative

Stock Option (Right to Buy)

Options Exercise

Transaction value
Shares: -149,502
Change %: -50%
Price: $0.000000^*
Shares after: 149,501
Date: 21 Aug 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 149,502
Exercise price: $3.01
Footnotes: F3

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 3 footnotes

Footnote F1

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.

Footnote F2

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.

Footnote F3

50% of the shares subject to such option are vested and became exercisable on August 8, 2026. The remaining 50% of the shares subject to such option vest and become exercisable August 8, 2027, subject to the Reporting Person's continuous service to the Issuer on such date.