John Preston

John Preston

Director/Board Member at CLEAN HARBORS, INC.

Net worth: 2 M $ as of 30/05/2026

76 year
Finance
Commercial Services
Health Technology

Profile

John T.
Preston
was the founder of C Change Investments Management LLC, founded in 2008, where the title held was Managing Partner from 2010 to 2011.
Current jobs include President & Chief Executive Officer at Atomic Ordered Materials LLC since 1999; Chairman at Vantem Global, Inc. (North Carolina) since 2015; Director at ExThera Medical Corp.
since 2019; Director at Eco Material Technologies, Inc. since 2022; Director at Earthshot Labs PBC since 2021; Independent Director at Clean Harbors, Inc. since 1995; Manager & Real Property at Continuum Energy Technologies LLC; President at Quantum Energy Technologies Corp.
since 1996; and Managing Partner at Transformative Energy & Materials Capital LLC.
Former jobs include Chairman at Molten Metal Technology, Inc.; Chairman-Emeritus at Massachusetts Technology Collaborative; Independent Director at Clean Harbors, Inc.; Director at E-Z-EM, Inc. from 2004 to 2008; Director at Alseres Pharmaceuticals, Inc. from 2004 to 2010; Director at Energy BioSystems Corp.; Director-Technology Development at Massachusetts Institute of Technology in 1995; Director at National Aeronautics & Space Administration; Director at US Department of Defense (District of Columbia); Director at Agency for Science, Technology & Research; Director at Biomerix Corp.; Director at Unity Aluminum, Inc.; Director at Mit Technology Licensing Office; Director at Akston Biosciences Corp.; Advisor at Hamilton Investment Partners LLC; and Selected Business Advisor at ABV LLC.
Education includes an MBA degree from Northwestern University conferred in 1976 and an undergraduate degree from the University of Wisconsin conferred in 1972.

Known holdings in public companies

CompanyDateNumber of sharesValuationValuation date
19/05/2026 7,044 ( 0.01% ) 2 M $ 30/05/2026

John Preston active positions

CompaniesPositionStart
CLEAN HARBORS, INC. Director/Board Member 31/12/1994
Director/Board Member 31/12/2020
Director/Board Member 31/12/2021
Director/Board Member 06/01/2019
Corporate Officer/Principal -
Quantum Energy Technologies Corp.
President 12/04/2010
Corporate Officer/Principal -
Atomic Ordered Materials LLC
Chief Executive Officer 31/03/1999
Chairman 31/12/2014

Former positions of John Preston

CompaniesPositionEnd
░░░░░░░ ░░░░░░░░░░░░░░░░ ░░░░ ░░░░░░░░░░░░░░ ░░░░░░ ░░░░░░░░░░
░░░ ░░░ ░░░░░░░░░ ░░░░░░░░░░░░░░░░░ ░░░░░░░░░░
░░░░░░░░ ░░░░░░░░░░ ░░░░░░░░ ░░░ ░░░░░░░░░ ░░░░░░░░░░░░░░░░░ ░░░░░░░░░░
░░░░░░░ ░░░░ ░░░░░░░░░░░░░░ ░░░░░░ ░░░░░░░░░░
░░░░░░░░░░░░░ ░░░░░░░░░ ░░ ░░░░░░░░░░ ░░░░░ ░░░░░░░░░░░░ ░░░░░░░ ░░░░░░░░░░
See the detail of John Preston's experience

Training of John Preston

Experiences
Positions held

Active

Inactive

Listed companies

Private companies

Connections

83

1st degree connections

27

1st degree companies

Male

Female

Members of the board

Executives

Linked companies

Private companies27

Industrial Services

Health Technology

Industrial Services

Health Technology

Consumer Services

Finance

Consumer Services

Consumer Services

Finance

Government

Government

Commercial Services

Finance

Atomic Ordered Materials LLC

Commercial Services

Process Industries

Commercial Services

Finance

Quantum Energy Technologies Corp.

Health Services

Finance

Health Technology

Non-Energy Minerals

Commercial Services

Distribution Services

Technology Services

Consumer Durables

-40%: Exceptional extension
d
:
:
SEIZE THE OFFER!