Ownership

Who owns Imperial Petroleum Inc./Marshall Islands, from the filings themselves: stakes over 5% (Schedule 13D/G), the institutional managers reporting the stock each quarter (13F), and the funds holding it (N-PORT).

Stakes over 5%

Investors crossing 5% ownership must disclose it. Schedule 13G filers certify the stake is passive; Schedule 13D is the general form for everyone else — founders, strategic holders, and activists alike. Each entry is the holder's most recent disclosure. Coverage begins with SEC's structured filings from December 18, 2024; a holder appears once they file or amend after that date.

Anson Funds Management LP, Anson Management GP LLC, Tony Moore August 14, 2026

Anson Funds Management LP: 3.6% · 1,580,490 shares — Anson Management GP LLC: 3.6% · 1,580,490 shares — Tony Moore: 3.6% · 1,580,490 shares

View filing (SCHEDULE 13G/A) Amendment #2

Flawless Management Inc., Arethusa Properties LTD, Harry N. Vafias June 24, 2026

Flawless Management Inc.: 15.7% · 6,991,255 shares — Arethusa Properties LTD: 7.4% · 3,307,452 shares — Harry N. Vafias: 31.9% · 14,266,903 shares

View filing (SCHEDULE 13D/A) Amendment #11

2 more 5% stakes behind a free account

See every investor who has disclosed crossing 5% of Imperial Petroleum Inc./Marshall Islands.

Super investors holding IMPP

Every institutional manager whose latest 13F reports this stock, largest position first. "% of their portfolio" is the weight inside that manager's own book — how much conviction the position represents; "% of company" is how much of Imperial Petroleum Inc./Marshall Islands they hold. Together these 81 managers report 34.35% of shares outstanding.

Investor	Position value	Shares	% of their portfolio	% of company	As of
ACADIAN ASSET MANAGEMENT LLC	$8.46M	1,836,743	0.01%	4.11%	June 30, 2026
Anson Funds Management LP	$7.29M	1,580,490	0.43%	3.54%	June 30, 2026

79 more institutional holders behind a free account

See every manager reporting Imperial Petroleum Inc./Marshall Islands, how much of the company they hold, and how big the position is inside their own portfolio.

Funds holding IMPP

Funds disclosing this stock in their monthly N-PORT portfolio, with the position's share of the fund's net assets. Together these 1 funds hold 0.13% of shares outstanding — counted inside the manager totals above, not on top of them, since a fund's shares also appear in its manager's 13F.

Fund	Position value	% of net assets	% of company	As of
ACUITAS US MICROCAP FUND	$261K	0.22%	0.13%	June 30, 2026