About Bill Gross
Bill Gross is a founder and CEO, director at ProrataAI.
Bill Gross reports to the SEC as a director, officer or major shareholder of 3 public companies: Energy Vault (NRGV), Heliogen (HLGN) and Internet Brands (INET).
Bill Gross first appears on SEC filings in 2007.
Experience
This experience comes from Bill Gross's profile and from SEC filings. For roles taken from filings, the years are when the filings name Bill Gross in the role, so the role may have started earlier or lasted longer.
ProrataAI, Inc. Current
Founder and CEO, director
2024 – Present · Pasadena, CA
ProRata provides source attribution for AI answers to publishers, businesses, and AI platforms.
CI
Casa Nova Studio, Inc. Current
Co-Founder and Chairman
2024 – Present
UP
UpdateAI Current
Co-Founder and Board Member
2020 – Present
TV
tvScientific Current
Co-Founder
2020 – Present
CM
Camino Mobility Current
Founder and Chairman
2019 – Present
CI
CarbonCapture Inc. Current
Founder and Chairman
2019 – Present
ER
Elementary Robotics Current
Founder
2017 – Present
MI
Migo, Inc. Current
Co-Founder and Chairman
2015 – Present
AD
Art Center College of Design Current
Trustee
2001 – Present
X1
X1 Current
Founder
2000 – Present
ID
Idealab Current
Founder and Chairman
1996 – Present
EI
Energy Vault Holdings, Inc.
Director and 10% owner
Founder (2017 – 2025)
2017 – 2025 · Public company (NRGV)
HI
Heliogen, Inc.
Chief Executive Officer and director
Founder (2013 – 2023)
2013 – 2024 · Public company (HLGN)
RO
Rollo
Founder and Chairman
2018 – 2021
AI
aiPod
Founder and Chairman
2017 – 2018
UB
UberMedia
Founder and CEO
2010 – 2015
PM
Perfect Market
Co-Founder
2007 – 2014
ER
Evolution Robotics
Founder
2001 – 2012
RA
RayTracker
Founder and Chairman
2007 – 2011
EI
Energy Innovations
Founder and CEO
2000 – 2011
II
Internet Brands, Inc.
Director and 10% owner
2007 – 2010 · Public company (INET)
Key Colleagues at Startups
The people Bill Gross works with at each company, as listed on that company's latest Form D.
ProrataAI, Inc. · Form D, Jul 30, 2026
NT
Nicholas Thompson
Director
NC
Navin Chaddha
Director
SA
Susan Aledort
Executive officer
WJ
William Savage Jr.
Director
NK
Nagraj Kashyap
Director
