About Siris
A distinct approach to technology private equity
Siris was founded in 2011 to bring new thinking and a distinct approach to technology private equity investing.
Who we are
Middle-market technology investing in North America and Europe
Siris makes investments in middle-market technology and technology-enabled services companies in North America and Europe.
Siris is based in West Palm Beach, Florida. Since its founding, Siris has raised four institutional funds.
- 2011Year founded
- ~$9.5BCapital invested since inception*
- ~20Platform investments
- ~40Add-on acquisitions
* As of 6/30/2026; includes co-investments. Please note that the metrics on this page include amounts for October Capital, LLC, an affiliate of Siris.
Our approach
Experienced investors and operators, working as one team
- 01
People
Siris’ team of experienced investors and industry leaders seek to partner with motivated management teams to work through the increasingly complex challenges of a fast-moving, uncertain environment.
Our insight is backed by decades of private equity and technology experience, which we supplement by leveraging our extensive network. We have lived through numerous tech disruptions and transformations, and we’re not afraid of the next set of challenges that await.
- 02
Operating Partners**
Fundamental to Siris’ investment strategy is our team of Operating Partners. Our Operating Partners are exceptional operating executives who work with Siris to identify, validate, and deliver on the strategic objectives of our investments, and are integrated throughout the firm’s investment lifecycle.
Because of their leadership experience, Siris Operating Partners work in close partnership with our management teams to help deliver on each portfolio company’s potential.
** Operating Partners, while not employees of Siris, work with us to identify, validate and operate investment opportunities.
Track record
Our platform investments over time
Each entry shows the investment date, status and fund listed for the company.
Investment dates as listed for each portfolio company. Select a year for details.
- Aug 2008
- Jan 2012
- Feb 2013
- Feb 2013
- Sep 2014
- Oct 2014
- Feb 2015
- Dec 2015
- Aug 2016
- Sep 2016
- Nov 2017
- Oct 2018
- May 2019
- Jul 2019
- Feb 2020
- Feb 2021
- Dec 2021
- Dec 2023
- Dec 2023
Affiliate
October Capital
In October 2026, Siris announced the creation of October Capital, a private equity firm dedicated to investing in services businesses that enable enterprises to adopt and scale transformative technologies.
Exploring a partnership with Siris?
We partner with motivated management teams of technology and technology-enabled services companies.