News

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February 28, 2017

Affiliates of Siris Capital Complete Combination of Mitel Mobile with Xura and Ranzure Networks to Create the New Mavenir Systems

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February 21, 2017

CLX Acquires Xura Secure Communications GmbH

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January 12, 2017

PGi Enters into Agreement to Acquire Cloud Communications Provider ReadyTalk

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December 19, 2016

Xura Agrees to Acquire Mitel Mobile and Ranzure Networks

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November 21, 2016

Technology Leader Krish Prabhu joins Siris Capital Group as Executive Partner

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September 27, 2016

Polycom Announces Completion of Acquisition by Affiliates of Siris Capital Group, LLC

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August 19, 2016

Xura Announces Completion of Acquisition by Affiliates of Siris Capital Group, LLC

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July 8, 2016

Siris Capital Group to Acquire Polycom, Inc. for $2.0 Billion in Cash

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May 23, 2016

Siris Capital Announces the Acquisition of Xura, Inc. for Approximately $643 million

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January 11, 2016

Siris Capital portfolio company, Transaction Networks Services, Inc, Announces Investment from Koch Equity Development LLC

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December 21, 2015

Siris Capital portfolio company, Transaction Network Services, Inc, divests Caller Authentication Assets

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December 8, 2015

PGi Announces Completion of Acquisition by Siris Capital Group

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December 8, 2015

Siris Capital portfolio company Digital River divests wholly-owned subsidiary BlueHornet

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October 8, 2015

Digital River enters into agreement to divest Blue Hornet

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September 30, 2015

CommScope completes acquisition of Airvana

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September 30, 2015

Digital River completes sales of Beanstream Internet Commerce

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September 10, 2015

Siris Capital agrees to acquire Premiere Global Services for approximately $1 billion

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September 9, 2015

Neustar to acquire caller authentication assets of TNS

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February 12, 2015

Siris Capital completes the acquisition of Digital River for approximately $840 million

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February 12, 2015

Siris Capital raises $1.81 billion for third technology-focused fund

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November 6, 2014

Mastercard to acquire TNS' payment gateway business

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October 23, 2014

Siris Capital agrees to acquire Digital River for approximately $840 million

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October 1, 2014

Siris Capital completes purchase of Juniper Networks® Junos® Pulse Business and BYOD Innovator MobileSpaces

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April 28, 2014

Siris Capital completes the acquisition of Stratus Technologies for approximately $352 million

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March 31, 2014

Stratus Technologies to be Acquired by Siris Capital Group

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March 6, 2014

Alfred Zollar joins Siris Capital Group as Executive Partner

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February 25, 2014

TNS completes dividend recapitalization

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November 14, 2013

Daniel Moloney joins Siris Capital Group as Executive Partner

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August 19, 2013

Elias Mendoza joins Siris Capital Group as Managing Director of Investment Development and Strategy

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June 10, 2013

Siris Capital Group completes sale of Tekelec to Oracle

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February 15, 2013

Siris Capital Group completes the acquisition of TNS for approximately $862 million

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December 13, 2012

Siris Capital Group closes on approximately $650 million for Siris Partners II Private Equity Fund

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January 27, 2012

Siris Capital Group completes the acquisition of Tekelec for approximately $780 million