Official NY OCA attorney registration data · Updated 2026 Methodology Discipline records

Jon David Lamphier

Currently registered

Jon David Lamphier is an attorney admitted to the New York State Bar in 2010, with a registered practice address in New York, New York. According to the New York Office of Court Administration, the current registration status on record is Currently registered.

Registration number4764452
Bar statusCurrently registered
Year admitted2010
Judicial departmentDepartment 1
Law schoolNew York University School of Law
Practice cityNew York, NY
CountyNew York
Firm / organizationSteel Partners Holdings L.P.
Office address590 Madison Ave Fl 32, New York, NY, 10022
Phone(646) 764-6336
Next registration dueAug 2026

Office location

Registered office address on file with the New York State Bar. Verify before visiting, as the address reflects the contact on record and may be a firm rather than a personal office.

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