Siris Capital Group

Siris Capital Group
Name	Siris Capital Group
Type	Private equity firm
Industry	Private equity
Founded	2011
Founder	Eric Severson; Bob Donahue
Headquarters	New York City
Key people	Eric Severson; Bob Donahue
Products	Leveraged buyouts; Growth capital; Corporate carve-outs

Siris Capital Group is a New York–based private equity firm focused on technology, telecommunications, and digital services investments. The firm was founded in 2011 by Eric Severson and Bob Donahue and has been involved in acquisitions, restructurings, and buyouts across North America and Europe. Siris has pursued deals across sectors linked to AT&T, Verizon Communications, IBM, Cisco Systems, and other large incumbents while engaging with strategic buyers such as Thoma Bravo, Silver Lake Partners, and Apollo Global Management.

History

Siris Capital was founded in 2011 by Eric Severson and Bob Donahue after their tenures at TPG Capital, Silver Lake Partners, Warburg Pincus, and Providence Equity Partners. Early activity included transactions involving assets from BT Group, Vodafone Group, and Alcatel-Lucent as the firm established a focus on carve-outs from Nortel Networks-era restructurings and spin-offs involving Lucent Technologies. Siris completed multiple platform investments during the 2010s amid a wave of consolidation led by buyers such as KKR, Carlyle Group, Bain Capital, and Thomson Reuters. The firm raised successor funds as part of a fundraising cycle that mirrored peers like Silver Lake, Vista Equity Partners, and HGGC.

Investments and Portfolio Companies

Siris has built a portfolio spanning telecom, software, and services. Notable investments include acquisitions and investments connected to companies such as Windstream Holdings, Lightower Fiber Networks, MasterControl, Group 1 Automotive-adjacent assets, and divisions formerly part of Comcast and Time Warner Cable. The firm has purchased business units from Avaya, Ericsson, Nokia, and Siemens and has held stakes alongside co-investors including TPG Capital, CVC Capital Partners, Providence Equity, and Advent International. Siris has engaged in takeover bids, minority recapitalizations, and full buyouts, competing in auctions with KKR & Co. Inc., Bain Capital Private Equity, and EQT Partners.

Business Model and Strategy

Siris follows a middle-market private equity model emphasizing technology-enabled services, telecom infrastructure, and corporate carve-outs. The firm targets assets where operational improvements can be implemented by management teams with support from advisors drawn from McKinsey & Company, Boston Consulting Group, Bain & Company, and Oliver Wyman. Siris deploys leveraged buyouts, growth equity, and distressed investments, drawing on financing from lenders and underwriters including Goldman Sachs, JPMorgan Chase, Morgan Stanley, and Bank of America Merrill Lynch. The firm’s playbook resembles strategies used by Hellman & Friedman, Thoma Bravo, and Francisco Partners in sourcing tech and telecom targets.

Leadership and Organization

Founders Eric Severson and Bob Donahue serve as senior partners and are supported by investment professionals with experience at TPG, Silver Lake Partners, Warburg Pincus, and Providence Equity Partners. Operating partners and advisors have backgrounds at AT&T, Verizon Communications, IBM, Cisco Systems, Oracle Corporation, and Microsoft. The firm’s board interactions and governance practices reflect standards advocated by institutions such as Institutional Limited Partners Association and regulatory expectations influenced by Securities and Exchange Commission guidance. Siris recruits executives from industry leaders like Ericsson, Nokia, Alcatel-Lucent, and Siemens for portfolio operational roles.

Financial Performance

Siris raises private funds targeting limited partners including pension funds such as CalPERS, Ontario Teachers' Pension Plan, Teachers’ Retirement System of Texas, sovereign wealth funds like Qatar Investment Authority and Government of Singapore Investment Corporation, endowments such as Harvard Management Company and Yale Investments Office, and family offices. Exits have involved sales to strategic buyers including Cisco Systems, Broadcom Inc., Cognizant, HPE, and financial sponsors such as Apollo Global Management and TPG. Performance metrics reported in investor presentations track internal rate of return (IRR) and multiple on invested capital (MOIC) consistent with peers including Silver Lake, Vista Equity Partners, and KKR in comparable vintages.

Legal and Regulatory Issues

Siris has navigated regulatory reviews involving merger control and national security considerations overseen by agencies such as the United States Department of Justice Antitrust Division, the Federal Communications Commission, and foreign authorities including the European Commission and the Competition and Markets Authority. Transactions have required approvals under statutes administered by agencies comparable to the Committee on Foreign Investment in the United States and filings consistent with Securities Exchange Act of 1934 disclosure obligations when portfolio companies interact with public markets or registrants like NYSE and NASDAQ. The firm has engaged external counsel from firms with antitrust and securities practices such as Skadden, Arps, Slate, Meagher & Flom, Latham & Watkins, and Simpson Thacher & Bartlett.

Category:Private equity firms Category:Investment management companies of the United States