Oki Matsumoto — Board Member Accountability Profile
Category: Private Citizen — Corporate Director Role: Independent Director, Mastercard Incorporated Board Tenure: 2016 – present Committee Memberships: Human Resources & Compensation Profile Type: Board Member Accountability — Anchor B (Documented Organizational Leadership)
Basis for Inclusion: Oki Matsumoto holds a documented governance role at Mastercard Incorporated. Mastercard Incorporated is one of the world’s largest payment processing networks and made documented political donations to Trump-aligned entities. Mastercard is significantly affected by interchange fee regulation, Federal Reserve payment system oversight, CFPB financial services regulation, and international trade policy governing cross-border payment flows. This profile documents the factual governance relationship, not the subject’s personal political views.
Subject Classification: Private Citizen / Corporate Director. Board membership is a matter of public record.
What is NOT the basis for inclusion: Personal political opinions, party affiliation, or protected speech are NOT the basis for inclusion.
Biographical Overview
Oki Matsumoto is the Founder and Chairman of Monex Group, Inc., a publicly listed online financial services and securities company based in Japan with operations across the U.S. and Asia. Before founding Monex, he was a partner at Goldman Sachs in Tokyo, where he focused on investment banking and securities. Matsumoto is a prominent figure in Japanese fintech and online brokerage services, bringing expertise in digital financial services to the Mastercard board. He has served on the board since 2016 and sits on the Human Resources & Compensation Committee.
Board Role and Governance Authority
- Company: Mastercard Incorporated (NYSE: MA)
- Board tenure: 2016 – present
- Committee assignments: Human Resources & Compensation Committee
Other Current Board Memberships (if applicable)
- Monex Group, Inc. (Founder & Chairman)
Parent Corporate Donor Profile
This profile is a governance-accountability companion to the Mastercard corporate donor profile.
Factual correction requests: If you believe information in this profile is incorrect, please contact factcheck@patriot.university with your name (optional), the specific claim, and any supporting documentation. We review all submissions and correct verified errors promptly.
Investigative trail pointers (public records)
Education only — verify independently. Absence of hits is not proof.
| Channel | Starting points |
|---|---|
| Federal courts | CourtListener / PACER party and attorney searches (spelling variants) |
| Campaign finance | FEC + OpenSecrets for committees and donors tied to documented roles |
| Corporate / LLC | State secretary of state; OpenCorporates for cross-border shells from reporting |
| Sanctions / PEP | OpenSanctions when international business context is already sourced |
| Contracts / grants | USAspending.gov for named entities from investigations |
Use public-records-research-specialist, corporate-intelligence-investigator, and public-corruption-ombudsman evidence tiers.
Sources
- Mastercard Incorporated DEF 14A Proxy Statement, April 2025; SEC EDGAR