Category: Private Citizen — Corporate Director Role: Board Director, Parsons Corporation Board Tenure: 2018 – present Committee Memberships: Audit & Risk; Compensation & Management Development Profile Type: Board Member Accountability — Anchor B (Documented Organizational Leadership)

Basis for Inclusion: Harry T. McMahon holds a documented governance role at Parsons Corporation. Parsons Corporation is a major defense, intelligence, and government infrastructure services company deriving nearly all its revenue from U.S. federal government contracts — including classified national security, cyber, and intelligence programs. Parsons made documented political donations to Trump-aligned entities while holding billions in defense and intelligence contracts directly funded through presidential budget decisions. 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

Harry T. McMahon is a veteran investment banker who spent much of his career at Bank of America and Merrill Lynch, where he served as an Executive Vice President and co-head of Global Corporate Finance. In this role, he oversaw major corporate financing, M&A advisory, and capital markets transactions for large institutional clients. McMahon’s investment banking background brings capital markets expertise and financial oversight capability to the Parsons board, where he serves on the Audit & Risk Committee. His board tenure predates the 2019 Parsons IPO, meaning he helped guide the company’s transition to public markets.

Board Role and Governance Authority

• Company: Parsons Corporation (NYSE: PSN)
• Board tenure: 2018 – present
• Committee assignments: Audit & Risk Committee; Compensation & Management Development Committee
• SourceParsons DEF 14A filed March 2, 2026; SEC EDGAR

Other Current Board Memberships (if applicable)

• Not publicly identified

Parent Corporate Donor Profile

This profile is a governance-accountability companion to the Parsons Corporation corporate donor profile.

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Investigative trail pointers (public records)

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Sources

• Parsons Corporation DEF 14A Proxy Statement filed March 2, 2026; SEC EDGAR