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Temple Fennell

Director at MacroCycle Technologies. Also a director at Aqua Membranes and Rebound Technologies.

DirectorRoles at 3 startups
Updated Nov 10, 2026·Latest SEC filing Jun 5, 2026·Suggest an edit

About Temple Fennell

Temple Fennell is a director at MacroCycle Technologies.

Form D filings also name Temple Fennell as a director at Aqua Membranes and Rebound Technologies.

Temple Fennell first appears on SEC filings in 2019.

Experience

This experience comes from Temple Fennell's profile and from SEC filings. For roles taken from filings, the years are when the filings name Temple Fennell in the role, so the role may have started earlier or lasted longer.

MacroCycle Technologies Inc. Current
Member Board of Directors
2025 – Present · Cambridge, MA
Produces recycled polyester resin for textile and packaging manufacturers.
Aqua Membranes, Inc. Current
Chair of the Board of Directors
2020 – Present · Albuquerque, NM
Makes membrane elements for industrial water treatment systems.
SunDensity Inc. Current
Chair of the Board of Directors
2020 – Present
Rebound Technologies, Inc. Current
Chair of the Board of Directors
2019 – Present · Denver, CO
Cooling and energy storage systems for industrial facilities and data centers.
Clean Energy Ventures Current
Co-Founder and Managing Partner at Clean Energy Ventures
2017 – Present
Center for Sustainable Finance and Private Wealth Current
Senior Fellow
2017 – Present
Clean Energy Venture Group Current
Member
2016 – Present
Harvard Kennedy School Current
Co-Director, Impact Investing Strategy for the Next Generation
2014 – Present
Keller Enterprises, LLC Current
Family Member
2003 – Present
Flagship Ventures
Private Markets Consultant
2015 – 2016
ATO Pictures (Art Takes Over), LLC
Co-Founder and CEO
2002 – 2013
12th Floor Film Fund
Managing General Partner
2006 – 2010
BoxerJam Media, LLC
Co-Founder and President
1993 – 2002
Boxer Learning, Inc
Co-Founder
1995 – 1999

Key Colleagues at Startups

The people Temple Fennell works with at each company, as listed on that company's latest Form D.

Aqua Membranes, Inc. · Form D, Jun 5, 2026
Craig Beckman
Craig Beckman
CEO and director
Rodney Herrington
Rodney Herrington
Founder and director
SK
Steve Kloos
Director
MR
MacroCycle Technologies Inc. · Form D, Mar 3, 2026
Catia Cesari
Catia Cesari
Director
SF
Stwart Pena Feliz
CEO and director
Jan-Georg Rosenboom
Jan-Georg Rosenboom
Co-founder, CTO and director
Rebound Technologies, Inc. · Form D/A, Aug 8, 2022
MC
Matt Coleman
Director
JF
John Fox
Chief Executive Officer and director
RG
Russell Goldfarbmuren
Founder and CTO, director

Sources

  1. SECAqua Membranes, Inc. Form D, filed Jun 5, 2026
  2. SECMacroCycle Technologies Inc. Form D, filed Mar 3, 2026
  3. SECRebound Technologies, Inc. Form D/A, filed Aug 8, 2022