Number of Portfolio Companies 1
Number of Current Board & Advisor Roles 1
  • Primary Job Title Co-Founder & General Partner
  • Primary Organization 
    Riot Ventures
  • Investor Type  Investment Partner, Individual/Angel
  • Investor Stage  Seed

Stephen Marcus is a Co-Founder & General Partner at Riot VC. Steve is a successful entrepreneur and investor with over 15 years of experience founding and managing technology companies.

Prior to joining New Atlantic Ventures in 2008, Steve founded five companies in the wireless, internet, and information technology sectors.

He has also been

an active angel investor and advisor in nearly a dozen ventures including Okta and Trefis.

Steve serves on the Boards of NAV portfolio companies Moda Operandi,

Invincea, and

Wiggio.

In his entrepreneurial career Steve was the founder & CEO of Marcus Spectrum Holdings (acquired by National Grid and twice by Nextel), a wireless spectrum investment fund, VoiceLink, a mission-critical wireless voice and data carrier, The Marcus Group (acquired by Global Tower Partners), a wireless tower development and site acquisition company, Marcus Holdings, a venture investment and advisory firm, and FutureNet, an IT consulting company.

Marcus has participated in several FCC auctions and remains an active owner-operator of wireless spectrum throughout the continental U.S. He has been an FCC licensed radio amateur since age 12.

Steve is a member of the MIT Sloan Admissions Committee and an active member of the MIT Alumni community.

He is a mentor in the inaugural class of the First Growth Venture Network (FGVN) as well as a judge for the MIT $100K Elevator Pitch Competition and the MIT Venture Capital Competition.

Steve is also a registered Apple iPhone developer and the author of a custom iPad application for the MIT Sloan Admissions Department called AdMITPad.

Number of Investments 1
Stephen Marcus invested in Trefis on Nov 1, 2008. This investment - Angel Round - Trefis - was valued at
$530K
.
Announced Date  
Organization Name  
Lead Investor  
Funding Round  
Money Raised  
Nov 1, 2008
Trefis
Angel Round - Trefis
$530K
Number of Partner Investments 4
Announced Date  
Organization Name  
Investor Name  
Lead Investor  
Funding Round  
Money Raised  
Oct 31, 2023
Shield AI
Riot Ventures
Yes
Series F - Shield AI
$300M
Jun 9, 2012
Moda Operandi
PROOF
Series C - Moda Operandi
$36M
Jun 27, 2011
Moda Operandi
PROOF
Series B - Moda Operandi
$10M
May 11, 2010
Wiggio
PROOF
Yes
Series A - Wiggio
$2.1M
Number of Current Jobs 3
Number of Past Jobs 5
Stephen Marcus has 3 current jobs including Co-Founder & General Partner at Riot Ventures, CEO & Co-Founder at Allclasses, and Co-Founder & General Partner at Riot Ventures. Additionally, Stephen Marcus has had 5 past jobs including Founder & CEO at Matchbox.
Organization Name  
Title At Company  
Start Date  
End Date  
Matchbox
Founder & CEOApr 2011Apr 14, 2014
PROOF
Venture Partner20082011
The Marcus Group
Founder & CEODec 1999Jun 2005
VoiceLink
Founder & CEOApr 2001Dec 2003
GT Open International
FounderApr 1994Jun 1998
Number of Current Board & Advisor Roles 1
Number of Past Board & Advisor Roles 4
Stephen Marcus is the Board Observer at Invincea.
Organization Name  
Title At Company  
Start Date  
End Date  
Moda Operandi
Board MemberAug 1, 20102011
Wiggio
Board MemberMay 1, 20102011
H3.com
Board Member20042005
Spectrum Bridge
Advisor
Number of News Articles 5
NewsMay 22, 2018
Free Press Releases — pickering film director
NewsApr 3, 2018
Free Press Releases — ben pickering film producer
NewsMay 11, 2010
Funding RoundNov 1, 2008
Trefis raised $530,000 / Angel from Semyon Dukach and 3 other investors