![Leonard Mallett](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>)
Leonard Mallett
Director/Board Member at
ARCHROCK, INC.
Net worth: 2 M $ as of 30/05/2026
Profile
Leonard Wayne Mallett currently serves as Independent Director at Archrock, Inc. since 2021.
Mr. Mallett is Chief Operating Officer, Director, and Executive Vice President at Summit Midstream Partners LLC since 2019, with involvement at the company starting in 2015.
Mr. Mallett holds director positions at Bravo Infrastructure Group LLC and South Bow Corp.
(since 2024).
Mr. Mallett is Senior Vice President-Engineering at EPCO, Inc., President, Chief Executive & Operating Officer at Summit Permian Transmission LLC, and Senior Vice President at Environmental Health & Safety.
Former roles include President, CEO, COO, Director, and Executive Vice President at Summit Midstream GP LLC from 2019 to 2020.
Mr. Mallett was Senior Vice President-Operations at Enterprise TE Partners LP from 1979 to 2006.
Mr. Mallett was Senior Vice President-Engineering at Enterprise Products Partners LP from 2008 to 2015, Senior Vice President at Enterprise Products GP LLC from 2006 to 2011, and Group Senior Vice President at Enterprise Products Holdings LLC from 2012 to 2015.
Mr. Mallett was Chief Operating Officer and Executive Vice President at Summit Midstream Partners LP from 2019 to 2020.
Education includes an MBA from Houston Baptist University conferred in 1988 and an undergraduate degree from Prairie View A&M University conferred in 1979.
Known holdings in public companies
| Company | Date | Number of shares | Valuation | Valuation date |
|---|---|---|---|---|
ARCHROCK INC. 0.04% | 01/03/2026 | 64,824 ( 0.04% ) | 2 M $ | 30/05/2026 |
Leonard Mallett active positions
| Companies | Position | Start |
|---|---|---|
| ARCHROCK, INC. | Director/Board Member | 19/01/2021 |
EPCO, Inc.
 EPCO, Inc. Oilfield Services/EquipmentIndustrial Services Provides oil and gas services | Corporate Officer/Principal | - |
Summit Midstream Partners LLC
 Summit Midstream Partners LLC Electric UtilitiesUtilities Provides investment to acquire and develop midstream energy infrastructure assets | Chief Operating Officer | 30/11/2015 |
Summit Permian Transmission LLC
 Summit Permian Transmission LLC Oil & Gas PipelinesIndustrial Services Provides natural gas transmission services | Chief Executive Officer | - |
Bravo Infrastructure Group LLC
 Bravo Infrastructure Group LLC Financial ConglomeratesFinance Provides investment services | Director/Board Member | - |
Environmental Health & Safety
 Environmental Health & Safety Miscellaneous Commercial ServicesCommercial Services Environmental Health & Safety is a department within Campus Services, a multi-department organization in Harvard's Central Administration. Campus Services provides non-academic services to the University community, aiming to support campus operations, energy and facilities, environmental health and safety, Harvard Capital Projects, Harvard University Housing, Harvard Real Estate, and Harvard International Office. The department's mission is to advance Harvard's mission of teaching and research by providing stewardship, strategies, and services that create exceptional community experiences. The company is based in Phoenix. | Corporate Officer/Principal | - |
Former positions of Leonard Mallett
| Companies | Position | End |
|---|---|---|
Summit Midstream Partners LP
 Summit Midstream Partners LP Oil & Gas PipelinesIndustrial Services Engages in developing, owning and operating midstream energy infrastructure assets | Chief Executive Officer | 31/08/2019 |
Summit Midstream GP LLC
 Summit Midstream GP LLC Financial ConglomeratesFinance Functions as an investment holding company | Chief Executive Officer | 27/05/2020 |
Enterprise Products Holdings LLC
 Enterprise Products Holdings LLC Financial ConglomeratesFinance Functions as an investment holding company | Corporate Officer/Principal | 30/11/2015 |
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Training of Leonard Mallett
Experiences
Positions held
Active
Inactive
Listed companies
Private companies
Connections
58
1st degree connections
14
1st degree companies
Male
Female
Members of the board
Executives
Linked companies
| Private companies | 14 |
|---|---|
Enterprise TE Partners LP
 Enterprise TE Partners LP Oil & Gas PipelinesIndustrial Services Owns and operates refined petroleum and liquefied petroleum gas pipelines | Industrial Services |
Enterprise Products Partners LP
 Enterprise Products Partners LP Oil & Gas PipelinesIndustrial Services Operates pipelines that transports natural gas, crude oil and petrochemicals | Industrial Services |
Archrock, Inc.
 Archrock, Inc. Oilfield Services/EquipmentIndustrial Services Manufactures equipment for oil and natural gas production, processing and transportation | Industrial Services |
Enterprise Products GP LLC
 Enterprise Products GP LLC Oil Refining/MarketingEnergy Minerals Provides oil-refining services | Energy Minerals |
Houston Baptist University
 Houston Baptist University Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
Prairie View A&M University
 Prairie View A&M University Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
EPCO, Inc.
EPCO, Inc. Oilfield Services/EquipmentIndustrial Services Provides oil and gas services | Industrial Services |
Summit Midstream Partners LLC
Summit Midstream Partners LLC Electric UtilitiesUtilities Provides investment to acquire and develop midstream energy infrastructure assets | Utilities |
Enterprise Products Holdings LLC
Enterprise Products Holdings LLC Financial ConglomeratesFinance Functions as an investment holding company | Finance |
Summit Midstream GP LLC
Summit Midstream GP LLC Financial ConglomeratesFinance Functions as an investment holding company | Finance |
Summit Midstream Partners LP
Summit Midstream Partners LP Oil & Gas PipelinesIndustrial Services Engages in developing, owning and operating midstream energy infrastructure assets | Industrial Services |
Summit Permian Transmission LLC
Summit Permian Transmission LLC Oil & Gas PipelinesIndustrial Services Provides natural gas transmission services | Industrial Services |
Environmental Health & Safety
Environmental Health & Safety Miscellaneous Commercial ServicesCommercial Services Environmental Health & Safety is a department within Campus Services, a multi-department organization in Harvard's Central Administration. Campus Services provides non-academic services to the University community, aiming to support campus operations, energy and facilities, environmental health and safety, Harvard Capital Projects, Harvard University Housing, Harvard Real Estate, and Harvard International Office. The department's mission is to advance Harvard's mission of teaching and research by providing stewardship, strategies, and services that create exceptional community experiences. The company is based in Phoenix. | Commercial Services |
Bravo Infrastructure Group LLC
Bravo Infrastructure Group LLC Financial ConglomeratesFinance Provides investment services | Finance |
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