IMPP · NASDAQ · Oil & Gas Midstream

Imperial Petroleum (IMPP)

Operates tankers and bulk carriers for petroleum and dry-bulk seaborne transport.

$5.43
After hours+0.03 (+0.56%)
At close$5.40(−4.59%)

13F · 13D/G · Form 4

Institutions34.00%12.78M ADS
70 holders · as of Jun 30, 2026
Insiders43.73%16.44M ADS
5 holders · as of Aug 21, 2026
Other22.27%8.37M ADS
remainder

37.59M ADS (1 ADS = 5 ordinary shares) as of Sep 5, 2026 · institutions as of Jun 30, 2026 · holders as of their latest filing

The share count is from the company's Dec 2022 annual report; nothing newer is on file here.

13F · 13D/G · Form 4

HolderStakeSharesDate
Harry N. VafiasInsider
37.95%14.27Mfiled Jun 24, 2026
Harry VafiasInsiderdirector, officer: CEO and President
5.74%10.79M ordinaryfiled Aug 21, 2026
Acadian Asset Management LLCInstitution
4.89%1.84M ADSas of Jun 30, 2026
Anson Funds Management LPInstitution
4.20%1.58M ADSas of Jun 30, 2026
Deuterium Capital Management, LLCInstitution
2.10%790,000 ADSas of Jun 30, 2026
Renaissance Technologies LLCInstitution
1.72%646,545 ADSas of Jun 30, 2026
Marshall Wace, LLPInstitution
1.68%630,497 ADSas of Jun 30, 2026
Peak6 LLCInstitution
1.60%603,098 ADSas of Jun 30, 2026
Two Sigma Investments, LPInstitution
1.38%518,832 ADSas of Jun 30, 2026
BNP Paribas Arbitrage, SNCInstitution
1.37%516,471 ADSas of Jun 30, 2026
Jane Street Group, LLCInstitution
1.31%491,969 ADSas of Jun 30, 2026
Empowered Funds, LLCInstitution
1.06%398,562 ADSas of Jun 30, 2026
Farther Finance Advisors, LLCInstitution
1.06%397,700 ADSas of Jun 30, 2026
Millennium Management LLCInstitution
1.01%380,198 ADSas of Jun 30, 2026
JPMorgan Chase & CoInstitution
0.91%340,332 ADSas of Jun 30, 2026
Squarepoint Ops LLCInstitution
0.89%335,942 ADSas of Jun 30, 2026
Point72 Asset Management, L.P.Institution
0.83%310,744 ADSas of Jun 30, 2026
Morgan StanleyInstitution
0.82%308,105 ADSas of Jun 30, 2026
Susquehanna International Group, LLPInstitution
0.82%306,654 ADSas of Jun 30, 2026
Winton Group LtdInstitution
0.76%286,133 ADSas of Jun 30, 2026
Centiva Capital, LPInstitution
0.60%223,973 ADSas of Jun 30, 2026
Commons Capital, LLCInstitution
0.59%222,624 ADSas of Jun 30, 2026
UBS Group AGInstitution
0.46%172,661 ADSas of Jun 30, 2026
Gsa Capital Partners LLPInstitution
0.41%154,308 ADSas of Jun 30, 2026
Citadel Advisors LLCInstitution
0.40%150,495 ADSas of Jun 30, 2026

13F, as of Jun 30, 2026

70 holders · 12.78M shares · 14 new positions · 38 increased · 17 reduced · 12 closed

HolderShares% outstandingChg q/qFiled
Acadian Asset Management LLC1.84M4.89%0Aug 13, 2026
Anson Funds Management LP1.58M4.20%−1.89MAug 13, 2026
Deuterium Capital Management, LLC790.0K2.10%−36.8KAug 5, 2026
Renaissance Technologies LLC646.5K1.72%+97.4KAug 13, 2026
Marshall Wace, LLP630.5K1.68%−176.1KAug 13, 2026
Peak6 LLC603.1K1.60%−155.0KAug 13, 2026
Two Sigma Investments, LP518.8K1.38%+412.2KAug 14, 2026
BNP Paribas Arbitrage, SNC516.5K1.37%+391.7KAug 13, 2026

13D/G · 5% or more, as filed

Holder% of classSharesFormFiled
Harry N. Vafiasincl. Arethusa Properties LTD, Flawless Management Inc.31.90%14.27M13DJun 24, 2026
Anson Funds Management LP7.80%3.47M13GMay 15, 2026

Form 4

Latest trades

No open-market trades in the last 12 months.

House and Senate disclosures

Not reported.