Claritas is a provider of consumer segmentation solutions that enable marketers to achieve more effective, efficient campaigns online and offline. Claritas’ proprietary segmentation algorithm and differentiated data sources provide unique insights to businesses regarding their marketplace and consumers.

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Put simply, we are going to be defined by our speed, innovation and service.

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Claritas Leadership

Mike Nazzaro

Chief Executive Officer

With a background that includes the world's top consumer product maker, leading marketing intelligence agencies and his own technology start-ups, Mike is a proven and sought after general manager, adept in running established and early-stage businesses. Prior to launching Claritas in 2017, Mike founded and built the highly successful company Nielsen Catalina Solutions (NCS) over the past 7 years.

  • CEO and Founder, NCS (2009-2016)
  • President, Nielsen Consumer Panel Services & President, Nielsen BuzzMetrics (2005-2009)
  • CEO, Intelliseek (2002-2005)
  • Founder, PlanetFeedback (1999-2001)
  • Executive, Procter & Gamble (1993-1999)
  • MBA: Harvard Business School
  • Undergraduate: Carnegie Mellon University

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Karthik Iyer

Chief Operations Officer

Karthik brings his unsurpassed cross-functional expertise to Claritas, having developed and managed teams across a wide variety of organizational structures. His ability to bring new innovations to market stems from a proven mantra of growing young talent as pieces to a visionary puzzle; a direct result of his experience as a founder and executive in Biz Dev, Product Strategy, Analytics and Technology roles.

  • COO and Co-Founder, NCS (2009-2017)
  • SVP Business Development, Nielsen BuzzMetrics & The Nielsen Company (2007-2009)
  • Co-Founder and multiple management roles, Intelliseek (2000-2007)
  • Executive positions in R&D and IT, Procter & Gamble (1995-2000)
  • Ph. D: The Ohio State University
  • Undergraduate: Indian Institute of Technology, Kanpur

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Jay Stockwell

Chief Revenue Officer

An inspiring senior executive leader and former naval officer (Commander USNR), Jay carries an extensive track record of success in adtech and entrepreneurial sectors spanning Procter & Gamble, ConAgra, BuzzMetrics, The Nielsen Company, and Nielsen Catalina Solutions. Jay's core strengths include General Management, P&L Management, Product Innovation, Sales Leadership, and Talent Development.

  • Responsible for $250MM in marketing services revenue over a decade of sales management
  • Co-Founder and Chief Revenue Officer, Nielsen Catalina Solutions
  • EVP Client Services at BuzzMetrics, leading successful acquisition by The Nielsen Company
  • SVP of Sales at Intelliseek, leading successful turnaround and merger with BuzzMetrics
  • Brand Manager at ConAgra, driving $100MM Banquet® Frozen Food brand and launching a new product line
  • 24 years of service as Naval Officer with 8 years active duty and 16 in the naval reserves (Ret. Commander in 2010)
  • MBA: George Washington University
  • Undergraduate: University of Nebraska, GO BIG RED!

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R. Chase Miller

Chief Product Officer

Described as a product guy that sells stuff, Chase is an interdisciplinary executive with a keen ability to connect technology with commercial strategy. Chase brings a unique perspective leveraging an accelerated rotation through leadership positions in Business Development, Product Strategy, Analytics, Technology and Sales Engineering.

  • Co-Founder, SVP Product & Strategy, NCS (2009-2015)
  • Director, Analytics - Yahoo! Consumer Direct & SalesEffect, The Nielsen Company (2005-2009)
  • MBA: DePaul University
  • Undergraduate: Miami University

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Angie Hemmelgarn

Chief HR Officer

An accomplished global talent leader with experience working across diverse industries, geographies and cultures, Angie has proven success in developing, implementing, and managing people strategy and solutions aligned with the company’s strategic goals. Her expertise in partnering with leadership to cultivate a high-performance culture and manage fast-paced environment will enable our growth.

  • Chief People Officer, Everything But the House (2015-2016)
  • VP of Human Resources, The Nielsen Company (2000-2015)
  • HR Manager, INC Research (1998-1999)
  • HR Manager, LifeNet (1996-1998)
  • MA: Labor and Employment, University of Cincinnati
  • Undergraduate: Sociology, University of Cincinnati

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Jim Schuster

Chief Financial Officer

A strategic, finance executive with a diverse financial background, Jim has a proven track record of partnering with leadership to achieve organization's objectives. His expert knowledge of accounting, finance mergers and acquisitions, brand management, and ability to streamline processes are instrumental for business growth.

  • Chief Financial Officer, TradeGlobal (2014-17)
  • VP of Finance, Luxottica North American Optical (2013-2014)
  • VP of Finance, Lenscrafters (2009-2013)
  • AVP of Finance, Pearl Vision (2005-2009)
  • Accounting and Business Development Roles (1998-2005)
  • Bachelor's in Accounting and Finance, University of Cincinnati

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Contact Us

Should you have any questions or feel any need to get in touch with us, please call 800.234.5973 or send an email to

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