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← US public companies

Williams Lewis T

SEC-identified person · CIK 1475714 Identifier-verified

Public-company roles (from insider filings)

CompanyCapacity as filedFilings
Protagonist Therapeutics, Inc PTGX Director filed 2017–2026
Arcellx, Inc. ACLX Director filed 2022–2022
Neurogene Inc. NLTX Director filed 2019–2021
Five Prime Therapeutics, INC. FPRX Director · President, CEO and Chairman filed 2013–2019
Beckman Coulter INC bc@hqfu6 Director filed 2009–2011

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.