About William Fitzhugh
William Fitzhugh is a co-founder & CEO, director at Adden Energy.
William Fitzhugh first appears on SEC filings in 2022.
Experience
This experience comes from William Fitzhugh's profile and from SEC filings. For roles taken from filings, the years are when the filings name William Fitzhugh in the role, so the role may have started earlier or lasted longer.
EI
EFI (Entrepreneurs for Impact) Current
EFI Climate CEO Fellow
2024 – Present
Adden Energy, Inc. Current
Co-founder & CEO, director
2022 – Present · Waltham, MA
Develops solid-state batteries for electric vehicles and automakers.
AI
American Nanotechnologies, Inc.
Founder & CEO
2015 – 2022
IC
Innovation Crossroads
Entrepreneurial Fellow
2019 – 2021
HU
Harvard University
Graduate Student Researcher
2015 – 2020
Key Colleagues at Startups
The people William Fitzhugh works with at each company, as listed on that company's latest Form D.
Adden Energy, Inc. · Form D, Oct 5, 2026
Laurie Menoud
Board Director
FH
Fred Hu
Co-founder & Board Director
KF
Knudt Flor
Board Director
LY
Luhan Ye
Co-founder & CTO, director
JW
Jason Whaley
Director