Calumet, Inc.
CLMT- Exchange
- Nasdaq
- Industry
- Petroleum Refining
- SEC CIK
- 0002013745
In the last 90 days, Calumet, Inc. insiders filed 0 open-market purchases and 1 sale; 188 institutions reported holding it in 13F filings for Q2 2026, worth $1.66B in total; no superinvestor holds it.
Holders of 5% or more of CLMT
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Calumet, Inc., largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| Two Seas Capital LP | 13G/A | 7.80%6.75M shares | +2.60 ppfrom 5.20% | Aug 13, 20252 filings | Nov 14, 2025 | SEC |
| Wasserstein Debt Opportunities Fund, LP | 13G/A | 7.10%6.10M shares | – | Feb 14, 20251 filing | Feb 14, 2025 | SEC |
| Wasserstein Debt Opportunities Management, L.P. | 13G | 7.00%6.03M shares | 0.00 ppfrom 7.00% | Feb 18, 20254 filings | Mar 19, 2025 | SEC |
| Adams Asset Advisors, LLC | 13G/A | 6.10%5.25M shares | – | Feb 13, 20251 filing | Feb 13, 2025 | SEC |
| BlackRock, Inc. | 13G | 5.40%4.71M shares | New | Jul 17, 20251 filing | Jul 17, 2025 | SEC |
| Vanguard Group Inc | 13G | 5.38%4.67M shares | New | Jul 29, 20251 filing | Jul 29, 2025 | SEC |
Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.
13D and 13G filings
11 Schedule 13D and 13G filings on Calumet, Inc., newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Nov 14, 202511:41 AM ET | Two Seas Capital LPand 2 others | 13G/A | 7.80%6.75M shares | +2.60 ppfrom 5.20% | Sep 30, 2025 | SEC |
| Aug 13, 20255:44 PM ET | Two Seas Capital LPand 2 others | 13G | 5.20%4.50M shares | New | Jun 30, 2025 | SEC |
| Jul 29, 202511:26 AM ET | Vanguard Group Inc | 13G | 5.38%4.67M shares | New | Jun 30, 2025 | SEC |
| Jul 17, 20258:12 PM ET | BlackRock, Inc. | 13G | 5.40%4.71M shares | New | Jun 30, 2025 | SEC |
| Mar 19, 20254:15 PM ET | Wasserstein Debt Opportunities Management, L.P.and 5 others | 13G | 7.00%6.03M shares | 0.00 ppfrom 7.00% | Mar 18, 2025 | SEC |
| Feb 25, 20258:53 PM ET | Wasserstein Debt Opportunities Management, L.P.and 5 others | 13D | 7.00%6.03M shares | 0.00 ppfrom 7.00% | Feb 21, 2025 | SEC |
| Feb 25, 20258:18 PM ET | Wasserstein Debt Opportunities Management, L.P.and 5 others | 13G/A | 7.00%6.04M shares | −0.10 ppfrom 7.10% | Dec 31, 2024 | SEC |
| Feb 18, 20253:21 PM ET | Wasserstein Debt Opportunities Management, L.P.and 5 others | 13G/A | 7.10%6.10M shares | – | Dec 31, 2024 | SEC |
| Feb 14, 20258:22 PM ET | Wasserstein Debt Opportunities Fund, LPand 6 others | 13G/A | 7.10%6.10M shares | – | Dec 31, 2024 | SEC |
| Feb 13, 202510:57 AM ET | Adams Asset Advisors, LLC | 13G/A | 6.10%5.25M shares | – | Dec 31, 2024 | SEC |
| Feb 12, 20252:15 PM ET | Knott David M Jrand 2 others | 13G/A | 0.00%0 shares | –Below 5% | Dec 31, 2024 | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell Calumet, Inc. shares.
No Form 144 notices for Calumet, Inc. are on file.