Calumet, Inc.
Calumet, Inc. (CLMT) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · CLMT · as of Mar 31, 2025
Ownership Breakdown
151
Institutional Holders
▲ 5 vs Q4
$503.55M
Total Inst. Value
▼ $309.95M vs Q4
87.15M
Shares Outstanding
freeFloat 68.08%
39.71M
13F Shares Held
▲ 2.77M vs Q4
Institutional ownership = 13F shares ÷ total outstanding. Insider % = 100 − free float. Public % = free float − institution %. Data: FMP /symbol-positions-summary + /shares-float + SEC EDGAR.
Top Institutional Holders
CLMT largest shareholders · institutional ownership
Q1 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
WASSERSTEIN DEBT OPPORTUNITIES MANAGEMENT, L.P. petroleum refining | 5.64M | 6.52% | 6.52% | $71.47B | May 2, 2025 | ▼ 53.2K |
ADAMS ASSET ADVISORS, LLC petroleum refining | 5.36M | 6.20% | 6.20% | $67.92B | Apr 21, 2025 | ▲ 105.2K |
VANGUARD GROUP INC petroleum refining | 3.84M | 4.45% | 4.45% | $48.72B | May 9, 2025 | ▲ 881 |
KNOTT DAVID M JR petroleum refining | 3.30M | 3.81% | 3.81% | $41.81B | May 12, 2025 | ▼ 354.2K |
TWO SEAS CAPITAL LP petroleum refining | 2.87M | 3.32% | 3.32% | $36.35B | May 15, 2025 | ▲ 1.08M |
GRAHAM CAPITAL MANAGEMENT, L.P. petroleum refining | 2.00M | 2.31% | 2.31% | $25.35B | May 15, 2025 | NEW |
STATE STREET CORP petroleum refining | 1.88M | 2.18% | 2.18% | $23.84B | May 15, 2025 | ▲ 698.5K |
SUSQUEHANNA INTERNATIONAL GROUP, LLP petroleum refining | 1.82M | 2.11% | 2.11% | $23.13B | May 14, 2025 | ▲ 305.4K |
MILLENNIUM MANAGEMENT LLC petroleum refining | 1.68M | 1.94% | 1.94% | $21.29B | May 15, 2025 | ▲ 1.68M |
ARROWPOINT INVESTMENT PARTNERS (SINGAPORE) PTE. LTD. petroleum refining | 1.45M | 1.68% | 1.68% | $18.40B | May 13, 2025 | ▼ 998.8K |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q1 2025 vs prior quarter
Q1 2025
25
Increased
+7.49M shares2
New Positions
first time holders20
Decreased
−4.24M shares0
Sold Out
fully exitedNet shares change (top 50)
+3.25M
+7.49M / −4.24M
Net new holders
+7
2 new / 0 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
CLMT insider trading · insider activity
Source: SEC Form 4
18
Buy transactions
4
Sell transactions
4.50
Buy/Sell ratio
$2M
Total disposed
Recent Insider Transactions
Showing 10 most recent · Common Stock only
| Name · Role | Date | Type | Shares | Price | Value | After Trans. | Filing |
|---|---|---|---|---|---|---|---|
Heritage Group 13(d) 10% Group Member | Jun 5, 2026 | Gift | 540,000 | — | — | 12.44M | Form 4 ↗ |
Mawer Stephen P director | May 28, 2026 | Award | 322 | — | — | 322 | Form 4 ↗ |
Boss John G. director | May 28, 2026 | Award | 70 | — | — | 70 | Form 4 ↗ |
Raymond Paul C director | May 28, 2026 | Award | 234 | — | — | 234 | Form 4 ↗ |
Schumacher Amy M director | May 28, 2026 | Award | 214 | — | — | 214 | Form 4 ↗ |
Heritage Group 13(d) 10% Group Member | May 15, 2026 | X-InTheMoney | 1,020,000 | $20.00 | $20.40M | 13.61M | Form 4 ↗ |
Source: /insider-trading/search (FMP stable). Buy/Sell direction: acquisitionOrDisposition A=Buy, D=Sell. RSU vesting (M-Exempt) excluded from sentiment bar. All data from SEC EDGAR public filings.
About institutional & insider ownership
Calumet, Inc. (CLMT) is primarily owned by institutional investors, who hold approximately 45.6% of total shares outstanding. Company insiders own approximately 31.92%, while retail and public investors account for the remaining 22.51%.
The largest institutional shareholder of Calumet, Inc. is WASSERSTEIN DEBT OPPORTUNITIES MANAGEMENT, L.P., holding approximately 5.64 million shares — equal to 6.52% of outstanding shares — as of March 31, 2025.
A total of 151 institutional investors currently hold CLMT stock, with a combined institutional value of approximately $503,549,752 as of the most recent 13F filing period.
Frequently asked questions
CLMT ownershipCalumet, Inc. (CLMT) is primarily owned by institutional investors, who hold approximately 45.6% of shares. The largest shareholder is WASSERSTEIN DEBT OPPORTUNITIES MANAGEMENT, L.P. with a 6.52% stake. Company insiders hold 31.92%. Data sourced from SEC Form 13F as of March 31, 2025.