Lex Mentis™Attorney Check

New York attorney · Reg. #5665492

William Michael Heisey

Registered (registry: Currently registered)

Current employer

Osler, Hoskin & Harcourt LLP · Toronto · since at least September 2026

Admission

Admitted 2019, First Department · OSGOODE HALL LAW SCHOOL

Employment history

Compiled from NYS Office of Court Administration registration records, published NY Appellate Division decisions, and SEC orders against attorneys; current as of October 2026. Not an official record; verify with the NY Courts Attorney Search.