About John Fichthorn
John Fichthorn is a director and 10% owner at Quantum.
Form D filings name John Fichthorn as a director at Ventiva.
John Fichthorn reports to the SEC as a director or major shareholder of 10 public companies, including Achieve Life Sciences (ACHV), Ranger Energy Services (RNGR) and Arena Group (AREN).
John Fichthorn first appears on SEC filings in 2008.
Experience
This experience comes from SEC filings. The years are when the filings name John Fichthorn in the role, so the role may have started earlier or lasted longer.
QC
Quantum Corp.
Director and 10% owner
2019 – 2026 · Public company (QMCO)
AI
Achieve Life Sciences, Inc.
10% owner
2022 · Public company (ACHV)
RI
Ranger Energy Services, Inc.
10% owner
2022 · Public company (RNGR)
AI
Arena Group Holdings, Inc.
Director
2019 – 2021 · Public company (AREN)
BI
Benefytt Technologies, Inc.
Director
2017 – 2020 · Public company (BFYT)
IC
Immersion Corp.
Director
2011 – 2014 · Public company (IMMR)
SI
SRS Labs Inc.
10% owner
2012 · Public company (SRSL)
SI
Silicon Storage Technology Inc.
Reporting person
2010 · Public company (SSTI)
CC
California Micro Devices Corp.
Director
2009 – 2010 · Public company (CAMD)
LI
Leadis Technology Inc.
10% owner
2008 – 2009 · Public company (LDIS)
Key Colleagues at Startups
The people John Fichthorn works with at each company, as listed on that company's latest Form D.
Ventiva, Inc. · Form D, Jan 7, 2026
DS
David Shepard
Director
RM
Regan MacPherson
Secretary
DC
David Chang
Director
CS
Carl Schlachte
Executive officer and director
VY
Victor Young
Director
TL
Tim Lester
Executive officer
DS
Dennis Sacha
Director