John Preston

John Preston

Director/Board Member at CLEAN HARBORS, INC.

Net worth: 959 645 $ as of 2024-03-30

74 year
Finance
Commercial Services
Health Technology

Profile

John T.
Preston
was the founder of C Change Investments Management LLC, founded in 2008, where he held the title of Managing Partner from 2010 to 2011.
He is currently the President & Chief Executive Officer of Atomic Ordered Materials LLC since 1999, Chairman of Vantem Global, Inc. (North Carolina) since 2015, Director of Clean Harbors, Inc. since 1993, Director of ExThera Medical Corp.
since 2019, Director of Akston Biosciences Corp.
since 2023, Director of Eco Material Technologies, Inc. since 2022, and Director of Earthshot Labs since 2021.
He also holds the title of Manager & Real Property at Continuum Energy Technologies LLC and is the President of Quantum Energy Technologies Corp.
since 1996.
He is a former Chairman of Molten Metal Technology, Inc., former Chairman-Emeritus of Massachusetts Technology Collaborative, and former Independent Director of Clean Harbors, Inc. He was also a Director of E-Z-EM, Inc. from 2004 to 2008, Director of Alseres Pharmaceuticals, Inc. from 2004 to 2010, Director of Energy BioSystems Corp., Director-Technology Development at Massachusetts Institute of Technology from 1986 to 1995, Director at National Aeronautics & Space Administration, Director at US Department of Defense (District of Columbia), Director at Agency for Science, Technology & Research, Director of Biomerix Corp., Director of Unity Aluminum, Inc., and Director of Mit Technology Licensing Office.
He is also an Advisor at Hamilton Investment Partners LLC and a Selected Business Advisor at ABV LLC.
Mr. Preston holds an MBA from Northwestern University and an undergraduate degree from the University of Wisconsin.

Known holdings in public companies

CompanyDateNumber of sharesValuationValuation date
2024-03-13 4,767 ( 0.01% ) 959 645 $ 2024-03-30

John Preston active positions

CompaniesPositionStart
CLEAN HARBORS, INC. Director/Board Member 1992-12-31
Director/Board Member 2020-12-31
Director/Board Member 2021-12-31
Director/Board Member 2023-01-22
Director/Board Member 2019-01-06
Transformative Energy & Materials Capital LLC Corporate Officer/Principal -
Quantum Energy Technologies Corp. President 2010-04-12
Corporate Officer/Principal -
Atomic Ordered Materials LLC Chief Executive Officer 1999-03-31
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All active positions of John Preston

Former positions of John Preston

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See the detail of John Preston's experience

Training of John Preston

Northwestern University Masters Business Admin
University of Wisconsin Undergraduate Degree

Experiences
Positions held

Active

Inactive

Listed companies

Private companies

See the detail of John Preston's experience

Connections

99

1st degree connections

27

1st degree companies

Male

Female

Members of the board

Executives

See the personal network

Linked companies

Listed companies2
CLEAN HARBORS, INC.

Industrial Services

ALSERES PHARMACEUTICALS, INC.

Health Technology

Private companies22

Health Technology

Industrial Services

Energy BioSystems Corp.

Consumer Services

Finance

National Aeronautics & Space Administration

Government

US Department of Defense (District of Columbia)

Government

Commercial Services

Finance

Atomic Ordered Materials LLC

Commercial Services

Process Industries

Commercial Services

Finance

Quantum Energy Technologies Corp.

Health Services

Transformative Energy & Materials Capital LLC

Finance

Health Technology

Non-Energy Minerals

Commercial Services

Technology Services

Technology Services

Consumer Durables

See company connections