Company Directory
Dan Tseng
- Managing Director, Legal
- Legal & Compliance
Dan Tseng is a Managing Director in Legal with Stonepeak. Prior to joining Stonepeak, Dan was the Chief Administrative Officer and General Counsel at CircleUp. Before CircleUp, Dan worked at Two Sigma and The Travelers Group in senior legal roles and at Simpson Thacher & Bartlett as a Senior Associate in the Private Equity Funds and M&A groups.
Dan received a Juris Doctorate from Northwestern University School of Law.
Douglas Wallach
- Managing Director
- Investment Team
Douglas is a Managing Director with Stonepeak in the Capital Markets group. Before joining Stonepeak, Douglas worked at Blackstone, focusing on its debt capital markets activities. Prior to Blackstone, Douglas worked at Kirkland & Ellis as an Associate concentrating his practice on debt finance and private equity.
Douglas received a Bachelor of Arts in Political Science from New York University. He also received a Juris Doctorate from Fordham University School of Law.
Sarah Weissman
- Vice President, Legal
- Legal & Compliance
Sarah is a Vice President in Legal with Stonepeak. Before joining Stonepeak, Sarah was an Associate in the Mergers & Acquisitions group at Davis Polk & Wardwell LLP.
Sarah received a Juris Doctorate from New York University School of Law and a Bachelor of Arts from Northwestern University.
Nikolaus Woloszczuk
- Senior Managing Director
- Investment Team
Nikolaus is a Senior Managing Director with Stonepeak. Before joining Stonepeak, Nikolaus was Global Chief Investment Officer for Macquarie Principal Finance, a business unit he co-founded and built since 2009. Prior to Macquarie, Nikolaus co-founded Park Street Partners and worked at BC Partners and the Boston Consulting Group.
Nikolaus received a Bachelor of Arts first class in Economics & Management from Oxford University.
Daniel Wong
- Senior Managing Director
Head of Europe - Investment Team
Daniel is a Senior Managing Director with Stonepeak and is Head of Europe as well as a member of the Stonepeak Executive Committee.
Prior to joining Stonepeak, Daniel spent more than 20 years at Macquarie where he was most recently Global Co-Head of Macquarie Capital and a Member of the Group Executive Committee. While at Macquarie, Daniel led the firm’s global infrastructure M&A business and was responsible for the principal investment business in infrastructure and energy. Daniel also led Macquarie’s acquisition and served as Chairman of the Green Investment Group, a division that grew under his tenure into one of the world’s leading developers in renewable energy.
Daniel has served on the Board of Trustees of the Shoreditch Trust (a local London charity) and also the Board of the Macquarie Group Foundation.
Daniel received a Bachelor of Laws and a Bachelor of Commerce from the University of Melbourne in Australia.
Kama Wong
- Vice President
- Investor Relations
Kama is a Vice President with Stonepeak. Before joining Stonepeak, Kama was an Associate in BlackRock’s Financial Institutions Group. She was responsible for developing and maintaining relationships with insurance clients. Kama joined BlackRock’s Institutional Client Business as a Graduate Analyst in 2016, in which she provided support in relationships with sovereign wealth funds, insurers, pensions and endowments.
Kama holds a Bachelor Degree in Business Administration, with concentrations in Marketing and Finance, from The Chinese University Hong Kong.
Brenden Woods
- Senior Managing Director
- Investor Relations
Brenden is a Senior Managing Director with Stonepeak. Prior to joining Stonepeak, Brenden was a Partner at StepStone, where he founded and led the firm’s infrastructure and real assets business. Brenden was also a Managing Director at Macquarie Group, where he held various infrastructure asset management roles. Earlier in his career, Brenden worked at British Gas, Anglian Water, EY and Andersen.
Brenden received a Bachelor of Financial Administration from the University of New England in Australia.
James Wyper
- Senior Managing Director, Head of Transportation & Logistics
- Investment Team
James is a Senior Managing Director and is Head of Transportation & Logistics with Stonepeak. Prior to joining Stonepeak, James was a member of Credit Suisse’s Global Energy group, where he focused on the power and renewables sectors.
James received a Bachelor of Arts in Economics from Yale University.
David Xia
- Principal
- Investment Team
David is a Principal with Stonepeak. Before joining Stonepeak, David was a Vice President at Oak Hill Advisors, a New York based alternative asset manager focused on high yield and distressed credit investments. Prior to Oak Hill Advisors, David worked in the private equity group at Angelo Gordon. David started his career at Moelis & Company as a generalist in its investment banking group.
David received a Bachelor of Science in Finance and Business Economics from Indiana University.
Layton Xu
- Vice President
- Investment Team
Layton is a Vice President with Stonepeak. Before joining Stonepeak, Layton was an Associate at PSP Investments in the Infrastructure Group, where he primarily focused on the utilities, transportation, and telecommunications sectors.
Layton received a Bachelor of Commerce from McMaster University
Michelle Yang
- Vice President, Corporate Controller
- Operations & Finance
Michelle is a Vice President and Corporate Controller with Stonepeak. Michelle joined Stonepeak from Cerberus Capital Management, where she was a Vice President of Management Company Reporting. Prior to Cerberus, Michelle worked at Tishman Speyer in the Property Accounting group.
Michelle received a Bachelor of Science from Cornell University.
Aaron Yeo
- Managing Director, Chief Operating Officer, APAC
- ESG & Corporate Development
Aaron is a Managing Director with Stonepeak and is the Chief Operating Officer of APAC. Before joining Stonepeak, Aaron was the COO of Asia and the Middle East for Macquarie Capital. He also held the roles of Global COO of the Principal Transactions Group and Asia Head of Asset Management for the Green Investment Group. Prior to Macquarie Capital, Aaron worked at Deutsche Bank as the Acting Head of Group Strategy & Planning for Asia Pacific, at Citigroup as a core member of the Asia Pacific in-house M&A team, and at the International Finance Corporation as an Investment Officer in the Private Equity and Funds group based in the Washington, DC headquarters. Aaron began his career as an investment banker at Merrill Lynch & Co.
Aaron received a Master of Arts in Philosophy, Politics and Economics from the University of Oxford. He also received a Master of Business Administration from INSEAD.
Hideaki Yoshida
- Director
- Investment Team
Hideaki is a Director with Stonepeak. Prior to joining Stonepeak, Hideaki was a Senior Vice President at Macquarie Capital where he led the execution of principal investments covering toll roads, airports, renewables, and energy resource aggregation business sectors. Prior to Macquarie, he worked at Barclays where he focused on foreign exchange transactions.
Hideaki received a Bachelor of Science in Economics from the University of California, Los Angeles.
Dorothy Young
- Vice President
- Investment Team
Dorothy is a Vice President with Stonepeak. Before joining Stonepeak, Dorothy was a Director at the Softbank-backed real estate investment group at OYO. Prior to that, Dorothy worked on real estate acquisitions at Northwood Investors and WeWork.
Dorothy received a Bachelor of Science in Commerce and a Bachelor of Arts in Global Development from the University of Virginia.
Kyu-Dong Yu
- Managing Director
- Investment Team
Kyu is a Managing Director with Stonepeak. Prior to joining Stonepeak, Kyu was a Director at Davidson Kempner Capital Management, a New York based multi-strategy hedge fund, where he focused on aircraft leasing and public and private credit. Prior to Davidson Kempner, Kyu was an Analyst in investment banking at Citigroup focused on industrials, consumer and healthcare sectors.
Kyu received a Bachelor of Science in Business Administration from University of California, Berkeley.
Seunghee Yu
- Principal
- Investment Team
Seunghee is a Principal with Stonepeak. Prior to joining Stonepeak, Seunghee was a Vice President at Macquarie Capital in Korea where he focused on renewable energy project development and investment. Prior to Macquarie, Seunghee worked at KDB Infrastructure Investment Asset Management, focusing on power and renewables.
Seunghee received a Master of Business Administration and a Bachelor of Architectural Engineering from the Seoul National University.
Zachary Zangl
- Principal, Compliance
- Legal & Compliance
Zachary is a Principal in Compliance with Stonepeak. Prior to joining Stonepeak, Zachary was the Chief Compliance Officer at Czech Asset Management, L.P. Before that, Zachary was a Senior Compliance Officer at Apax Partners. Zachary has also held compliance roles at Morgan Stanley and started his career as a Legal Assistant at Davis Polk & Wardwell LLP supporting the Financial Institutions group.
Zachary received a Bachelor of Arts in Political Science and History from the University of Wisconsin-Madison.
Daniel Zinic
- Managing Director
- Investor Relations
Daniel is a Managing Director with Stonepeak. Before joining Stonepeak, Daniel was a Managing Director at Park Hill Group. Prior to Park Hill, Daniel was a Partner at First Avenue Partners in Institutional Sales with a focus on the DACH region. Earlier in his career, Daniel worked in sales and distribution at both Citigroup and Fidelity.
Daniel received a Bachelor of Business Administration degree from Darmstadt University in Germany.
Andrew Barron
- Operating Partner
- Senior Advisors & Operating Partners
Andrew is an Operating Partner with Stonepeak and supports Stonepeak’s investments in communications and digital infrastructure. Andrew has enjoyed a long career of senior operating roles in telecom and media companies primarily in Europe, including Virgin Media (Chief Operating Officer), Modern Times Group (Chief Operating Officer), UPC (now Liberty Global), The Walt Disney Company and McKinsey. Andrew currently serves as a Non-Executive Director on the boards of Openreach, Tele2, Verisure and Ocean Outdoor. Andrew is also a former Chairman of Comhem and Primacom, and a former Non-Executive Director at Arris.
Ken desGarennes
- Operating Partner
- Senior Advisors & Operating Partners
Ken is an Operating Partner with Stonepeak and supports Stonepeak’s investments in communications and digital infrastructure. Ken has more than twenty years of telecommunications experience. He served for over ten years as the Chief Financial Officer of Zayo Group, overseeing all financial operations of the business, including over forty-five acquisitions and the company’s 2014 Initial Public Offering. Prior to Zayo, Ken served as Chief Financial Officer at Wire One Communications and previously Accenture. Ken currently serves as a member of the Board of Directors of Cyxtera Technologies and Chairman of the Board of Directors of Six Degrees, a leading cloud-led managed service provider in the UK.
Gordon DuGan
- Operating Partner
- Senior Advisors & Operating Partners
Gordon is an Operating Partner with Stonepeak and supports Stonepeak’s efforts across multiple sectors adjacent to the real estate industry. He is the former Chief Executive Officer of Gramercy Property Trust which was sold to Blackstone Equity Partners VIII, LP for $7.6 billion in October of 2018. Gordon oversaw the growth of Gramercy from $300 million in net assets when he became CEO in 2012 until the sale to Blackstone. Gramercy was the third best performing REIT in the United States over that period. Prior to Gramercy, Gordon was CEO of W.P. Carey & Co. from 2003-2010. During his tenure as CEO, W.P. Carey grew to $10 billion in assets, was one of the few public companies not to cut its dividend during the financial crisis, and significantly outperformed the MSCI US REIT index. In addition, Gordon founded the European investment business of both WPC and Gramercy during his tenure at those companies overseeing over $4 billion in European investments. Gordon is a former member of the Board of Governors of NAREIT, a member of the Council on Foreign Relations, and the Treasurer of the Innocence Project.
Gordon received a Bachelor of Science in Economics with a concentration in Finance from the Wharton School of the University of Pennsylvania.
Theresa Eaton
- Operating Partner
- Senior Advisors & Operating Partners
Theresa is an Operating Partner with Stonepeak and supports Stonepeak’s efforts in renewables, energy transition, and energy infrastructure. Theresa is the Chief Executive Officer and Owner of WECS Renewables, a national utility-scale distributor for the solar, battery storage, wind, and data center industries. Theresa previously served as a Partner of SCF Partners, an energy services and equipment private equity firm, where she focused on North America and the Middle East. At SCF, Theresa led the firm’s origination efforts and had strategic growth responsibility for development of investments, serving on the boards of BCCK Engineering, a provider of midstream nitrogen rejection units and gas processing plants, Taurus Industrial, a provider of engineering and electrical services to the petrochemical, infrastructure and industrial markets, and National Energy Services Reunited, a Middle East (UAE) based energy services business.
Theresa is currently a Director of WECS Renewables, West Texas Gas Corporation, the American Clean Power Association, the Center for Renewable Energy Advanced Education, and Duke University’s Board of Innovation & Entrepreneurship.
Theresa received a Juris Doctorate and a Bachelor of Arts in Japanese and International Studies from Duke University.
Bill Fathers
- Operating Partner
- Senior Advisors & Operating Partners
Bill is an Operating Partner with Stonepeak and supports Stonepeak’s investments in communications and digital infrastructure. Bill was most recently Executive Vice President of Cloud Services at VMWare and previously served as President of Savvis, a public data center and cloud infrastructure provider. Bill was a member of the Board of Directors of Telx, a leading cross-connection and colocation platform. He also worked for Thomson Reuters, where he helped build businesses in a number of international markets throughout Europe, Asia and North America.
A former officer in the British Army, Bill received a Master of Arts in Engineering from Cambridge University.
DJ Gribbin
- Operating Partner
- Senior Advisors & Operating Partners
DJ is an Operating Partner with Stonepeak and supports Stonepeak’s investments in transportation as well as with public sector relations. Before joining Stonepeak and founding his own consulting firm, DJ served in the White House as the first Special Assistant for infrastructure to the U.S. President. In this role, DJ led the effort to develop the Administration’s infrastructure policy and championed permitting reform. In the public sector, DJ has also served as General Counsel for the U.S. Department of Transportation and Chief Counsel for the Federal Highway Administration, where he created a public-private partnership (P3) task force and authored a report to the U.S. Congress underscoring the advantages of alternative delivery methods. In the private sector, DJ was previously the head of governmental advisory for Macquarie Capital and led advisory teams structuring P3 transactions for governmental clients. DJ has also worked for Koch Industries and HDR helping clients develop innovative ways to deliver infrastructure.
DJ received a Bachelor of Arts and a Juris Doctorate from Georgetown University and is a member of the Virginia Bar.