Management Team

The Siemens Enterprise Communications management team is made up of some of the industry’s most experienced executives all of whom are focused on developing and delivering the most innovative products and services.
Please click on the links below for more details about each member of the team.


Hamid Akhavan – Chief Executive Officer

Hamid Akhavan is CEO at Siemens Enterprise Communications, where he has overall responsibility for the performance of the company, including its subsidiary businesses like Enterasys Networks.


Eve Aretakis

Eve C. Aretakis – Executive Vice President, Product Management & Development

Eve Aretakis is EVP, Product Management & Development, at Siemens Enterprise Communications, where she has responsibility for all product business units and product development, as well as the CTO’s office.


Humberto Cagno

Humberto Cagno - General Manager, Latin America

Humberto Cagno is General Manager, Latin America, at Siemens Enterprise Communications, where he has responsibility for our businesses across Latin America.


Christopher Crowell

Christopher Crowell – Executive Vice President, Network Infrastructure and Security

Chris Crowell is EVP of the Network Infrastructure and Security Business Unit (Enterasys). Reporting directly to the Chief Executive Officer, he has responsibility for all aspects of the Enterasys Networks business.


Mark Greenquist

Mark Greenquist – Chief Financial Officer

Mark Greenquist joined Siemens Enterprise Communications in May 2013 and serves as the Chief Financial Officer. He reports to the Chief Executive Officer and has direct responsibility for finance.


Martin Kinne – General Manager, Germany

Martin Kinne is General Manager, Germany, at Siemens Enterprise Communications, where he has overall responsibility for our business in the German market.


Chris Hummel

Chris Hummel – General Manager, North America and Chief Commercial Officer

Chris Hummel joined Siemens Enterprise Communications in April 2010 and serves as the General Manager of North America at Siemens Enterprise Communications, where he has overall responsibility for our business in North American market and as Chief Commercial Officer, with responsibility for marketing and corporate development.


Stephen Juge

Stephen Juge – Senior Vice President, General Counsel, and Company Secretary

Stephen Juge is SVP, General Counsel, and Company Secretary at Siemens Enterprise Communications, and reports directly to the CEO.


Ray Leclercq – Managing Director, The Gores Group

Ray serves as Managing Director responsible for portfolio company oversight and operational due diligence at The Gores Group.  Within this remit, he has taken on leadership of our strategic transformation programs, reporting to the Chief Executive Officer.


André Schiffer - Chief Human Resources Officer

In July 2012 André Schiffer was named Chief Human Resources Officer of Siemens Enterprise Communications. In this position he is a member of the Senior Executive Team and reports directly to CEO Hamid Akhavan.


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