Skip to content
Governance Register

← US public companies

MAC Mahon Thomas P

SEC-identified person · CIK 1168580 Identifier-verified

Public-company roles (from insider filings)

CompanyCapacity as filedFilings
Ortho Clinical Diagnostics Holdings plc OCDX Director filed 2021–2022
Express Scripts Holding Co. ESRX Director filed 2012–2018
Safari Holding Corp PMC Director filed 2007–2016
Laboratory Corp of America Holdings LH Director · CEO and Chairman of the Board filed 2006–2012
Express Scripts INC ESRX Director filed 2006–2012

All roles under one Commission-assigned identifier - the same person by the SEC's own record, not by name matching. From the SEC's insider-transaction filings (Forms 3, 4 and 5). Every reporting director and officer carries a Commission-assigned identifier (CIK), so these footprints are identifier-verified - no name matching involved. Insiders file when they transact, so dates are filing dates: "last filed" never means "served until". This layer is not yet joined to the nonprofit register - identity joins ship only after independent review.