Executive Advisors
Meet the Periphas advisors.
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Louis Chênevert

Aerospace, Industrials


United Technologies Corp.

Pratt & Whitney

General Motors

Louis R. Chênevert is the former Chairman & Chief Executive Officer of United Technologies Corporation. He was elected President & Chief Executive Officer in April 2008 and Chairman in January 2010 until he retired in November 2014. He held the position of President & Chief Operating Officer, and served as a Director of United Technologies since March 2006. Prior to that he served as President of Pratt & Whitney, from April 1999 through March 2006.  Before joining Pratt & Whitney in 1993, Chênevert spent 14 years at General Motors.  He served as Production General Manager of General Motors’ St. Therese operation.


Mr. Chênevert joined the Goldman Sachs Merchant Banking Division as a Senior Industry Advisor from 2015 to 2017, and is a member of the Business Council as well as a former member of the US-India CEO Forum.  He also has served on the Board of Directors of Cargill Inc. since 2011, became the Chairman of the Congressional Medal of Honor Foundation in late 2017 and is the Chairman of Yale Cancer Center’s Advisory Board.

Brian Clingen

Business Services


KAR Auction Services

Universal Outdoor Holdings

Brian T. Clingen previously served as Chief Executive Officer and Chairman of the Board of KAR Auction Services a listed public company (NYSE:KAR).  Mr. Clingen originally invested in the purchase of Insurance Auto Auctions Inc. (IAAI) in 2004 and participated as Director of IAAI until the acquisition and merger with KAR in 2007.   He served as CEO of KAR until 2009, and as Chairman of the Board of KAR from 2009 through 2014.


Mr. Clingen has served as Managing Partner of BP Capital Management since 1998. Additionally, Mr. Clingen has also served as Director for Endo Pharmaceuticals from 2002-2006, and as Chief Financial Officer and Director of Universal Outdoor Holdings from 1989 until its sale in 1998.

Matthew Espe

Industrials, Business



Armstrong World Industries


IKON Office Solutions

General Electric

Matthew J. Espe served as the Chief Executive Officer of Radial, Inc. an omnichannel commerce technology and operations provider, from February to November 2017,.  He was recruited by Sterling Partners to lead the transformation of Radial, a $1.2 billion ecommerce services business. Prior to Radial, Mr. Espe served as CEO of Armstrong World Industries, a $2.9 billion publicly traded global producer of flooring products and ceiling systems, from July 2010 until March 2015.


Before joining Armstrong, he was Chairman and Chief Executive Officer of Ricoh Americas.   Prior to that role, Mr. Espe was Chairman and Chief Executive Officer of IKON Office Solutions, Inc. from 2002 to 2008.   He began his career at General Electric Company and was with GE for more than 20 years, where he served in various leadership roles in Europe, Asia and the United States, last as President and CEO of GE Lighting.


Mr. Espe is currently a member of the board of directors at WESCO International, Foundation Building Materials and Realogy Holdings. He was formerly a member of the Board of Directors of Husky Injection Molding Systems Ltd., NCI Building Systems, Inc., Veritiv Corporation, Armstrong World Industries, Inc., IKON Office Solutions, Inc., Graphic Packaging Holding Company, Unisys Corporation, Con-way Inc. and Ricoh Americas Corporation.

Manny Garcia

Consumer, Fast Food,

and Food Products


Burger King (Board)

Chef Creations

Manuel A. Garcia III serves as Chief Executive Officer of Atlantic Coast Management, an operator of various restaurant concepts in Florida.  From 1969 until 2000 Mr. Garcia operated Burger King restaurants as a franchisee, eventually owning and operating a total of 67 Burger King restaurants.  He was elected to the Burger King Corporation Board of Directors in September 2003 and served until October 2010.   From 2013 to 2018, Mr. Garcia served as an Independent Director of Carrols Restaurant Group, Inc., a publicly traded company and the largest Burger King franchisee in the world with over 750 locations.  He also started several restaurant concepts including Pebbles, Harvey’s Bistro and Manuel’s on the 28th in Florida.


Additionally, Mr. Garcia served as Chairman of the Board of Chef Creations, Inc. a supplier and manufacturer of ready-to-eat custom food products, with the business being sold to Kettle Cuisine in early 2016. Mr. Garcia has also formerly served as a member of the Board of Directors of United Heritage Bank, Sun Bank, N.A. Orlando, and Sprint/United Telephone of Florida.

Dr. William Joyce

Chemicals, Industrials




Union Carbide

Dr. William H. Joyce is the former Chief Executive Officer and Chairman of Nalco Holding Company, positions he held from November 2003 until his retirement in December 2007. Prior to his appointment as CEO and Chairman of Nalco, Dr. Joyce served as CEO and Chairman at Hercules Incorporated from 2001 until November 2003.  Prior to Hercules, he had a distinguished career at Union Carbide where he was named CEO in 1995 and Chairman of the Board in 1996.  Upon Union Carbide’s merger with the Dow Chemical Company in 2001, he was named Vice Chairman of Dow Chemical.  Dr. Joyce has been the Chairman and CEO of Advanced Fusion Systems since 2008.


Dr. Joyce,  in addition to serving on the Boards of the companies noted above, has served on the boards of Hexion, El Paso Corporation, CVS Caremark Corporation, Reynolds Metals, and Momentive Performance Materials Holdings Inc.

Gerald Rittenberg

Consumer, Retail



Party City

Gerald C. Rittenberg served as Chief Executive Officer of Party City (formerly known as Amscan) from 1997 until January 2014, and has been a member of the Board of Directors of Party City since July 2012.  He has served as a senior advisor and non-employee Chairman of the Board since April 2017, after having served as Executive Chairman since January 2014. Mr. Rittenberg’s career at Party City / Amscan began in 1989, and prior to being named Chief Executive Officer he had served as President, as well as Executive Vice President of Product Development and Sales.


Shortly after being named CEO of Amscan in 1997, the largest designer, manufacturer and distributor of party goods in America, the Goldman Sachs Merchant Banking Funds took the company private in a $315 million transaction. Berkshire Partners and Weston Presidio acquired Amscan from the Goldman funds in 2005, and Mr. Rittenberg led a further expansion into retail, acquiring Party City, the largest party supplies retailer in the United States.  The combined company went public in 2015 (NYSE:PRTY).