K2 Integrity Names Aaron Karczmer Chief Executive Officer

The Californer
New York, NY

Overview

Mr. Karczmer to also chair firm's Executive Committee; joins Board of Directors
Co-Founder Jules B. Kroll named Chairman of the Board; Co-Founder and Founding CEO Jeremy M. Kroll appointed Vice Chairman of the Board
Leadership transition at premier risk advisory and services firm reflects accelerating firm growth and shifts in technology, payments, security, and regulation

New York – Californer -- K2 Integrity, a global leader in risk management investigations and assurance services, today announced that Aaron Karczmer has been named Chief Executive Officer of the firm, effective immediately.

Responsibilities

  • Provide leadership as Chief Executive Officer, effective immediately, guiding K2 Integrity’s growth, client service, and strategic investments.
  • Lead the firm alongside the Board of Directors; Aaron will chair the Executive Committee and will be based in New York City at K2 Integrity’s global headquarters.
  • Support ongoing growth initiatives, client service enhancements, and expansion of service offerings during a period of transition and increased complexity for commercial and governmental entities.

Qualifications

  • Aaron Karczmer has more than 20 years of experience building, transforming, and leading teams with a focus on growth and customer outcomes, leveraging data and cross-sector partnerships.
  • Most recently served as Executive Vice President and Chief Enterprise Services Officer at PayPal, with global responsibility for risk and compliance policy and operations, customer service, regulatory and government relations, and oversight of relevant product teams including identity, customer service, risk, and compliance.
  • Prior to PayPal, held leadership roles at American Express and co-founded units focused on identity theft and cyber-crime mitigation; graduate of Stanford Law School.

His appointment reflects K2 Integrity's accelerating growth and expansion of service offerings; he will serve as a senior executive focused on growth, client service, and strategic investments.

About K2 Integrity

Financial and commercial integrity forms a cornerstone of K2 Integrity's efforts to work with financial institution and government clients. We believe that a robust commitment to integrity advances important interests, including collective and national security objectives, sustainable growth, and full integration of partners into the international financial system and the global economy.

At K2 Integrity, we are more than risk managers and compliance experts—we are architects of integrity. We understand that critical moments define an organization's success and offer opportunities to achieve higher standards, build smarter systems, and address public policy challenges with private sector solutions.

Governments, companies, and individuals turn to us to address high-stakes issues, drive efficiency, deliver growth, and enhance competitiveness. Our team combines subject-matter expertise with advanced technology to solve today’s most pressing issues, including financial crime, white-collar investigations, cyber resilience, and more.

For more information, visit or follow on LinkedIn and X.

Contact

Dukas Linden Public Relations

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Posted 2026-01-15

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