Portfolio
Technology and technology-enabled services companies
Siris portfolio companies, current and realized. Select a company to learn about the investment.
All companies
Our investments
GigamonCurrent · Dec 2023 · Siris IV
BearComCurrent · Dec 2023 · Siris IV
EQCurrent · Dec 2021 · Siris IV
Newfold DigitalCurrent · Oct 2018 · Siris III/IV
Constant ContactRealized · Feb 2021 · Siris IV
TPxCurrent · Feb 2020 · Siris III/IV
EFICurrent · Jul 2019 · Siris IV
TravelportCurrent · May 2019 · Siris IV
IntralinksRealized · Nov 2017 · Siris III
PolycomRealized · Sep 2016 · Siris III
MavenirCurrent · Aug 2016 · Siris III
PGiRealized · Dec 2015 · Siris II/III
Digital RiverRealized · Feb 2015 · Siris II
Pulse SecureRealized · Oct 2014 · Siris II
Stratus TechnologiesRealized · Sep 2014 · Siris II
TNSRealized · Feb 2013 · Siris II
TekelecRealized · Jan 2012 · Siris II
AirvanaRealized · Feb 2013 · Siris I
MModalRealized · Aug 2008 · Siris I
Siris’ portfolio companies, current and realized, are shown on this page. Company logos are trademarks of their respective owners.
Exploring a partnership with Siris?
We partner with motivated management teams of technology and technology-enabled services companies.