Perseus, LLC.

Portfolio Companies



Kenneth M. Socha, Chairman of the Executive Committee and Senior Managing Director of Perseus, joined Rappahannock Investment Company, the predecessor of Perseus, in 1991. Prior to joining Perseus, Mr. Socha practiced corporate and securities law as a partner of Dewey Ballantine in New York City. From 1985 to 1991, Mr. Socha devoted a substantial amount of his time to the representation of Wesray Capital Corporation and its affiliates. Mr. Socha has more than 22 years of experience investing in growth equity and buyout transactions. Mr. Socha serves on the Board of Directors of the following Perseus fund portfolio companies: Baumot AG, Pinacl Solutions UK Ltd., Seismic Equipment Solutions II, L.P. and Texas Clothing Holding Corp. (parent of Haggar Corp.). Mr. Socha also serves on the Board of Directors of Clean Energy Fuels Corp. (Nasdaq: CLNE), a former Perseus fund portfolio company. Mr. Socha was a contributing author of the first edition of The Art of M&A: A Merger Acquisition Buyout Guide, published by Dow Jones-Irwin.

Mr. Socha holds a B.A. in English Literature from the University of Notre Dame and a J.D. from Duke University School of Law.


John T. Schwieters is a Senior Executive and member of the Executive Committee of Perseus and joined the firm in 2000. Prior to joining Perseus, Mr. Schwieters was the Managing Partner of Arthur Andersen’s Mid-Atlantic region and was a member of Arthur Andersen’s U.S. leadership team. Mr. Schwieters became a partner at Arthur Andersen in 1974 and was head of its tax practice from 1974 to 1989. In 1989, he became Office Managing Partner. Mr. Schwieters served as Advisory Partner on many of Arthur Andersen’s Washington area clients, including Snyder Communications, Inc., Clark Enterprises, Riggs National Corporation, Sallie Mae, American Association of Retired Persons, National Automobile Dealers Association, and The John F. Kennedy Center for the Performing Arts.

Mr. Schwieters serves as Chairman of the Board of Directors of Perseus Books, L.L.C., a Perseus fund portfolio company. Outside of Perseus, Mr. Schwieters is a member of the Board of Directors of Danaher Corporation, Choice Hotels International, Inc., and WETA Public Television & Radio. He served as a member of the Board of Directors of Smithfield Foods, Inc. until it was sold in September 2013. He also served as a member of the Manor Care Corporation Board of Directors until it was acquired by the Carlyle Group in 2007. Additionally, he has served as: President, Watergate East, Inc., a cooperative housing corporation; President, Washington Ballet; Chairman, Greater Washington Board of Trade; Vice Chairman, Greater Washington Research Center; Treasurer, the United Way of the National Capital Area; Executive Committee, Federal City Council; Chairman of Development Campaign, Samaritan Inns; Board of Trustees, Trinity College; Treasurer, Community Foundation of the National Capital Region; Treasurer, 2012 Coalition; Advisory Board, The George Washington University Law School; and President, Greater Washington Society of CPAs.

Mr. Schwieters holds a B.S. in Business Administration from Georgetown University and an L.L.B. from The George Washington University.

Susan R. Inouye Tarter is the Chief Financial Officer, Chief Compliance Officer and member of the Executive Committee of Perseus.  Ms. Tarter served as the CFO of Perseus from late 1991 through June 1996. She rejoined Perseus in 2009 to work with the firm’s finance team, became Vice President of Finance in 2010, and became Chief Financial Officer in January 2012.  Prior to her association with Perseus, Ms. Tarter was the director and then Vice President of Operations for the Occupational Medical Center, an environmental consulting firm which was acquired by Princeton Laboratories.  In that role, she reported to the President and Founder and was responsible for overseeing services in industrial hygiene and occupational medicine as well as a microbial laboratory and the expansion of operations to multiple locations in Maryland and Pennsylvania. 

Ms. Tarter holds an M.B.A. from the Wharton School at the University of Pennsylvania and a B.B.A. in management from Iowa State University.  She is a certificate holder in the District of Columbia, having passed the CPA exam in 1991.

Michael L. Miller is a Managing Director of Perseus. Prior to joining Perseus in 2005, Mr. Miller was the Managing Partner of Mill Consulting Group, an investment banking boutique that specialized in assisting small and medium sized enterprises in the identification and execution of strategic capital formation and M&A transactions. He served as one of four partners at Swiss Life Private Equity Partners AG in Zurich, Switzerland during 2002 and 2003. Mr. Miller was Vice President and Group Head of Principal Investments at Enron North America in Houston, Texas, where he focused on investments in new energy technologies and built a portfolio that included three companies in which Perseus was a co-investor. He founded and led UBS Capital GmbH, the Frankfurt-based private equity investment unit of the Union Bank of Switzerland Group in Germany. Mr. Miller started his career in the Mergers and Acquisitions Department of Salomon Brothers, Inc. in New York City and Frankfurt, Germany. Mr. Miller is a member of the Boards of Directors of the following Perseus fund portfolio companies: AGO AG Energie + Anlagen, Baumot AG, Deutsche KWK Holding GmbH, Puralube, Inc., Seismic Equipment Solutions II, L.P., SEVA Energie AG, and Twintec AG. Mr. Miller is also an advisor and mentor to the Energy Program of the Houston Technology Center.

Mr. Miller holds a B.S. in Chemical Engineering, a B.A. in German, and an M.B.A. from Rice University.

Anjali V. Jolly is a Managing Director of Perseus. Prior to joining Perseus in 2005, Ms. Jolly worked at JPMorgan Partners (now known as CCMP Capital), the direct private equity investment division of J.P. Morgan. At JPMorgan Partners, she focused on middle-market leveraged buyout and growth equity transactions and was involved in all aspects of the investment process including leading operational and financial due diligence, participating in the negotiation and execution of transactions, and developing strategic plans and financial forecasts for portfolio companies. Ms. Jolly has also held internships in the investment banking division of Goldman, Sachs & Co. and in the marketing department of L’Oreal Inc. Ms. Jolly serves on the Board of Directors of the following Perseus fund portfolio companies: NanoBio Corporation, Perseus Books, L.L.C. and Pinacl Solutions UK Ltd.

Ms. Jolly holds an M.B.A. from Harvard Business School and a B.A., summa cum laude, in Systems Engineering and Finance from the University of Pennsylvania (The Wharton School).


Kristin M. Gunther is a Vice President of Perseus. Prior to joining Perseus in 2009, Ms. Gunther worked at CRT Capital Group LLC in its research department, analyzing high-yield debt and equity securities primarily of companies within the media and consumer industries. Prior to that, Ms. Gunther worked in the Mergers & Acquisitions and Restructuring divisions of Rothschild Inc., where she was responsible for performing financial analysis of proposed transactions, conducting operational and financial due diligence, and executing on all aspects of the Chapter 11 bankruptcy process. Ms. Gunther serves as a Board member of Texas Clothing Holding Corp. (parent of Haggar Corp.), a Perseus fund portfolio company.

Ms. Gunther holds an M.B.A. from the Darden School of Business at the University of Virginia, where she was a Jefferson Scholars Foundation Fellow, and a B.A. in Economics from Wesleyan University.


Joanne Marshall Shea is Vice President, Legal at Perseus. Prior to joining Perseus in 2008, Ms. Shea was a legal consultant for XE Capital Management, LLC, a private equity and hedge fund firm. At XE, she managed the formation of a complex international private equity fund focused on real estate investments and structured fund investments in India. Earlier in her career, she was an associate for Cooley Godward, LLP (now Cooley Godward Kronish, LLP) representing start-up and later-stage private and public companies in the high-tech and biotech industries.

Ms. Shea holds a B.A. in Political Science from the University of Notre Dame and a J.D. from Georgetown University Law Center.

D. Alexandra Gardiner is Vice President, Finance at Perseus. Ms. Gardiner had previously served as Chief Financial Officer and Chief Compliance Officer of EMAlternatives LLC, a private equity fund investor that focuses exclusively on global emerging markets. In that role, she developed and led accounting, finance, reporting, and compliance functions. Prior to joining EMAlternatives, Ms. Gardiner served for almost four years as Vice President of Finance for The Rock Creek Group, which provides investment and advisory services to endowments, foundations, pension funds, sovereign wealth funds, and other institutional investors. She has also served as Vice President, Assistant Controller of CSFB’s Private Equity Division and Assistant Vice President of CSFB’s Financial Audit Group.

Ms. Gardiner holds a B.S. in Accounting from Towson State University and an M.B.A. in Finance and International Business from New York University. She is a CPA certified in the State of Maryland.

Paige Garmon is a Senior Accountant at Perseus. Prior to joining Perseus in 2011, Ms. Garmon worked in both public and corporate accounting. Ms. Garmon’s most recent experience was as an Associate at Kennedy & Kennedy, PLLC, where her primary responsibilities included tax and financial statement preparations. Ms. Garmon also worked for Maritime Communication Services, Inc. (a subsidiary of Harris Corporation) as its Accountant. Her primary responsibilities included preparing financial statements, implementing internal audits, and training accounting staff.

Ms. Garmon holds a B.S. in Accounting from Auburn University. 

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updated 10/7/14



Kenneth M. Socha

John T. Schwieters

Susan R. Inouye Tarter

Michael L. Miller

Anjali V. Jolly

Kristin M. Gunther

Joanne Marshall Shea

D. Alexandra Gardiner

Paige Garmon


© 2001-14 PERSEUS, L.L.C., Design by: LCComm. Updated 10/7/14