![Stephen Mawer](data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="%231b1b1b" class="bi bi-person-fill" viewBox="0 0 16 16"><path d="M3 14s-1 0-1-1 1-4 6-4 6 3 6 4-1 1-1 1zm5-6a3 3 0 1 0 0-6 3 3 0 0 0 0 6"/></svg>)
Fortuna: 11 M $ al 31/05/2026
Stephen Patrick Mawer is currently Chairman at Calumet Specialty Products Partners LP since 2023, Chairman at ClimeCo LLC since 2017, Chairman at Calumet, Inc. since 2024, Director at Howard Midstream Energy Partners LLC since 2023, and Director at Zenith Energy Management LLC since 2014.
Former roles include Chairman at Calumet GP LLC from 2023 to 2024, President & Director at Koch Supply & Trading Co. Ltd. from 2000 to 2014, and President at KS&T International Holdings LP.
Education includes undergraduate and graduate degrees from the University of Cambridge.
| Empresa | Fecha | Número de acciones | Valoración | Fecha de valoración |
|---|---|---|---|---|
0,35 % | 02/06/2026 | 303.310 ( 0,35 % ) | 11 M $ | 31/05/2026 |
| Empresas | Cargo | Inicio |
|---|---|---|
Zenith Energy Management LLC
 Zenith Energy Management LLC Other TransportationTransportation Provides storage and logistics services for crude oil & refined products | Director/Miembro de la Junta | 01/11/2014 |
Calumet Specialty Products Partners LP
 Calumet Specialty Products Partners LP Oil Refining/MarketingEnergy Minerals Produces specialty hydrocarbon and fuel products | Presidente | 01/05/2022 |
ClimeCo LLC
 ClimeCo LLC Investment ManagersFinance ClimeCo invests in companies located in the United States. The firm focuses on carbon offsets, plastic credits, Renewable Energy Credits (RECs), Forecasted Mitigation Units (FMUs), criteria air pollutants and water quality credits. It provides financing for buyout transactions. | Presidente | 01/07/2017 |
Howard Midstream Energy Partners LLC
 Howard Midstream Energy Partners LLC Oil & Gas ProductionEnergy Minerals Engages in gathering, processing and transportation of natural gas | Director/Miembro de la Junta | 04/04/2023 |
| Empresas | Cargo | Fin |
|---|---|---|
Calumet GP LLC
 Calumet GP LLC Financial ConglomeratesFinance Provides investment services | Director Ejecutivo | 01/05/2022 |
Koch Supply & Trading Co. Ltd.
 Koch Supply & Trading Co. Ltd. Gas DistributorsUtilities Supplies natural gas, power and emissions for trading markets | Presidente | 07/05/2014 |
KS&T International Holdings LP
 KS&T International Holdings LP Oilfield Services/EquipmentIndustrial Services Produces & supplies petroleum products | Presidente | - |
Activas
Inactivas
Empresas cotizadas
Empresas privadas
Relaciones de 1er grado
Empresas vinculadas al 1er grado
Hombre
Mujer
Administradores
Ejecutivos
| Empresas privadas | 8 |
|---|---|
Calumet Specialty Products Partners LP
Calumet Specialty Products Partners LP Oil Refining/MarketingEnergy Minerals Produces specialty hydrocarbon and fuel products | Energy Minerals |
University of Cambridge
 University of Cambridge Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
KS&T International Holdings LP
KS&T International Holdings LP Oilfield Services/EquipmentIndustrial Services Produces & supplies petroleum products | Industrial Services |
Calumet GP LLC
Calumet GP LLC Financial ConglomeratesFinance Provides investment services | Finance |
Koch Supply & Trading Co. Ltd.
Koch Supply & Trading Co. Ltd. Gas DistributorsUtilities Supplies natural gas, power and emissions for trading markets | Utilities |
ClimeCo LLC
ClimeCo LLC Investment ManagersFinance ClimeCo invests in companies located in the United States. The firm focuses on carbon offsets, plastic credits, Renewable Energy Credits (RECs), Forecasted Mitigation Units (FMUs), criteria air pollutants and water quality credits. It provides financing for buyout transactions. | Finance |
Howard Midstream Energy Partners LLC
Howard Midstream Energy Partners LLC Oil & Gas ProductionEnergy Minerals Engages in gathering, processing and transportation of natural gas | Energy Minerals |
Zenith Energy Management LLC
Zenith Energy Management LLC Other TransportationTransportation Provides storage and logistics services for crude oil & refined products | Transportation |
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