Our history

Our founders, Frank Baker, Peter Berger, and Jeffrey Hendren have worked together for 20+ years.

Siris Capital was founded in 2011 to bring new thinking and a distinct approach to tech & telecom private equity investing. Today, Siris has raised over $5.9 billion of cumulative committed capital and is currently targeting investment opportunities with transaction values of $500 million to $5 billion.

If you’re looking for an experienced partner to navigate the strategic and operational complexities that surround your markets, LET’S TALK.

Key Facts


Year Founded

$5.9 Billion

Cumulative Capital Commitments

$3.45 billion

Siris Partners IV L.P Fund


Current Portfolio Companies


Siris’ team of experienced investors and industry leaders seek to partner with motivated management teams to work through the 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 and telecom disruptions and transformations, and we’re not afraid of the next set of challenges that await.

Fundamental to Siris’ investment strategy is our team of Executive Partners*. Our Executive Partners are exceptional operating executives who work with Siris to identify, validate, and deliver on the strategic objectives of our investments. Because of their leadership experience, Siris Executive Partners work in close partnership with our management teams to help deliver on each portfolio company’s potential.

Our Team


We believe that different stage businesses require distinct strategies, expertise and incentives that are difficult to achieve in concert with market and investor expectations. We specialize in helping companies reposition themselves to navigate these challenges.

Our Strategy

Corporate Citizenship

Siris believes that the integration of environmental, social, and governance (ESG) factors into our business considerations and activities enhances our ability to successfully execute on our mission. We are committed to bringing these considerations into our organization and business practices. Siris also supports and engages with multiple organizations and foundations to help our broader communities. These organizations cover a broad range of initiatives, include early education, job training, arts and culture, health and environment.

* Executive Partners, while not employees of Siris, work with us to identify, validate and operate investment opportunities.

New York

601 Lexington Ave.
59th Floor
New York, NY 10022

Palo Alto

524 Hamilton Ave.
Suite 201
Palo Alto, CA 94301