Our Team

Mosaik brings a team with years of industry experience from all perspectives, comprehensive industry relationships with entrepreneurs, senior executives, investors and service providers, and a proven ability to diligence, structure and execute successful investments and transactions, to generate superior returns for investors, entrepreneurs and companies.

Miles Kilburn

Managing Partner

Miles Kilburn has served as a senior executive and director for a dozen commerce-enabling technology companies throughout his professional career. He brings two decades of success in financial technology, electronic payments and financial services. Miles has excelled as a private investor, board chair and member, chief executive officer, chief financial officer, general counsel and strategy leader.

Miles’ prior executive experience includes serving as executive vice president and chief strategy officer of Concord EFS, Inc., a payment and network services company. He also served as CEO of Primary Payment Systems, Inc. (now Early Warning), and group executive vice president, chief financial officer and general counsel of Star Systems, Inc. Earlier, Miles served as a corporate attorney with Skadden Arps focusing on securities law and mergers and acquisitions.

Miles has a BA in business administration from the University of Washington, and a JD, cum laude, from Northwestern University School of Law.

Howard Mergelkamp

Managing Partner

Howard Mergelkamp III has over two decades of investment banking, private equity, operating and corporate law experience in financial technology, transaction processing/electronic payments and financial services. Howard has been principal or advisor on over $157 billion of strategic transactions across over 100 completed deals of all types and structures, working with executive management teams and boards at companies with market capitalizations from $1 million to $43 billion.

As a founding member of Corporate Ventures and Advisory Services at BlackRock, Inc., Howard managed proprietary investments and third-party mergers and acquisitions in financial technology. As a senior vice president at Regulus Group LLC, he led strategic planning, mergers and acquisitions, and corporate restructuring. Howard’s advisory experience includes investment banking at Merrill Lynch & Co. – focusing on mergers and acquisitions and corporate finance in electronic payments and financial technology. He practiced corporate law at both Wachtell, Lipton, Rosen & Katz and Cravath, Swaine & Moore — focusing on mergers and acquisitions in banking, asset management, insurance and consumer finance.

Howard has a BA, cum laude, in political science and economics from Columbia University, and a JD, magna cum laude, from University of Pennsylvania Law School.

John Katzenmeyer


John Katzenmeyer has been focused on the financial technology industry for the past two decades.   During that time, John was a senior investment banker covering the payments, investment / wealth management tech, lending technologies, financial software, and other tech-enabled financial services sectors.  He has advised executive management teams and boards on a wide variety of strategic transactions, including both cross-border and domestic transactions.  John also executed public and private capital raising transactions on behalf of his clients totaling over $50B, including the evaluation of several principal investing opportunities.  Prior to joining Mosaik, John held senior financial technology investment banking positions at Macquarie Capital, Stifel, UBS and Banc of America Securities.

John began his career as a corporate securities lawyer.  John received his BA, cum laude, from Duke University, and a JD from New York University School of Law.

Eric Varney


Eric Varney has more than 15 years of investment banking and corporate finance experience in the financial technology and financial services sectors. Throughout his career, Eric has completed more than 50 advisory and capital raising transactions across North America, Europe and Asia, representing more than $25 billion in deal value.

Eric’s prior experience includes roles at UBS, Macquarie Capital, Stifel and Capital One. Most recently, he was Head of Financial Technology Investment Banking at Mizuho.

Eric has a BBA in finance and history from the University of Wisconsin, and an MBA from the University of Virginia.

Contact Us

555 California Street 24th Floor, San Francisco, CA 94104
phone: (707) 266-4840